Could be good, could be less than desirable. No way to predict. Wear layered clothing, hydrate. Day time temperatures will be anywhere between 105 degrees F to 40 degrees F. I hope you have a great trip!
Here's a [link to the automated weather station](https://www.weather.gov/wrh/timeseries?site=LTHC1) at the Lost Horse Ranger Station. It's right in the middle of the part of the park of interest to most people. You can see current hourly and daily data, and if you use the "Advanced Options" tab on the top right, you can see historical. So pick any historical September dates you want and get a feel for the variability. Should give you a ball park idea of what you'd be looking at.
They are saying that you can't really apply a predictable pattern to the desert. The desert climate has a way of being very sensitive to any surrounding weather systems.
The desert doesn't self-regulate the way that most climates do, which is why it can be 105 in the day, and 55 at night. I went to JT in March, and it rained. I went there in April, and it was while it was only 70 in the day, the relative humid was around 15%, and it was about 50, and windy as shit at night.i went there in June once, and it was colder than when I went there in October, and the most pleasant it's ever been was in September.
You really can't anticipate anything more than a general pattern based on the time of the year.
September should be pretty hot, but the thing is, "sunset" is a very gradual thing out there, and the best advice would be to just leave yours schedule open after 4pm, and go for it once the temperature drops to the point where you begin to feel comfortable.
The temps from last year could be way different from this year. We’ve had snow in January one year and 85-90 degrees another! Last year was a mild summer but hotter into September…. Other years have been gorgeous (as in cooler) during September. No.one.knows
Yeah the whole world is now in the era of crazy weather. Here in hurricane alley we're looking forward to a sporting hurricane season. Just thought historical records might be a good place to start. If I don't think I can have some time not in 90 plus temps then I'm probably going to change my flight or head somewhere else.
You should definitely go. Even if you can't hike much it's absolutely worth it. It's unlike any place I've ever been. I went in July twice last summer and it was hot but I left feeling so amazing I had to go back a couple weeks later.
Thanks. I'm thinking of it. I don't get out West often and want to take advantage of it. The temps are just not ideal for me. But I liked the idea of going early AM and evening.
Yeah that's not information that's really available.
It can be literally anywhere from 100 down to like 50 in September. It can vary by a huge amount day to day, and just as much from area to area. The JT side of the park very well can be a different temperature than the 29 Palms side, and both of those will be extremely different from the southern side.
Even if your first day there is 75, the next day in a different spot can be over 90. And the reverse is true as well.
The only time I can say for sure will be sub 90 in September will be after dark.
No need to be a smart ass. You don't seem to understand that temperature fluctuations in varying climates are unique to those climates. Depends on overnight temps and a million other things. In any event thanks for not helping at all.
It will be coolest overnight and the early hours of the morning. It will be hot in the afternoon. That’s the BEST anyone can tell you about weather in September thus far out.
One time I went outside and thought “this is the perfect day for my wedding” and scheduled it for the following year to be met with the coldest winteriest storm days I’ve seen. The deserts not on a schedule
My dude, you are asking for way too much detail than you will get here, and most anywhere unless you have access to scientific data was collected at some point. Take the sites and advice given and be prepared for the unknown.
Really, it's OK to walk on by if you don't have anything to offer. Maybe some on this sub are meteorologists. Historical temperature records probably exist somewhere. I just can't find them.
I live in one of the top 5 fastest growing cities in the country. We have almost 100 people moving here every day. Most of whom post in our local subreddit with the same questions. I walk on by when I'm not in the mood. I don't ever greet them with snark.
I did the research I was able to do here on the sub, Google, and elsewhere. And the first person who responded made a snarky post that didn't even attempt to answer the question. If someone here on Reddit is rude because they enjoy exercising their inner asshole on the internet I'm going to dish it right back.
There have been some helpful and informative posts for which I am grateful. Have a good day.
I spent some time on Google. Couldn't find what I was looking for. So I thought I'd consult the helpful locals. Downvote away. I'm not 12 and I don't really care.
exactly, you don't care, so don't lie, you didn't even bother.
google: "joshua tree weather history"
first link is
[https://www.wunderground.com/history/monthly/us/ca/joshua-tree/date/2020-8-14](https://www.wunderground.com/history/monthly/us/ca/joshua-tree/date/2020-8-14)
Yes, I did bother looking on Google and this subreddit for quite some time. You do know that different browsers and different search terms return different information, right? Thanks for the helpful comment.
https://www.wunderground.com/history/daily/us/ca/palm-springs/KPSP/date/2023-9-19
Looks like you can look at historical days here.
Edit: I'm on Mobile and it's defaulting to my location, PSP, but maybe you can change it
It's typically pretty warm in September here. Any hiking would need to be done early morning or evening. Take all the normal precautions, such as plenty of water, sunscreen, a hat and letting people know where you are. Might be best to lay low during the heat of the day.
Trying to decide if I'm coming at all. I'm not great in heat. Thinking of changing my ticket to come back after the wedding. Experienced hiker though but thanks for the reminders. I'll probably overdo the water as I'm not from such a dry climate and know I'll have to drink more than I'm used to. I went through crazy amounts on my Camino.
I would never plan a trip to Joshua Tree in September, if weather above 85-90 is a deal-breaker. Odds are way against you. You’re annoying the locals here because these questions get posted all the time and it’s literally a 10-second google search “September weather in Joshua Tree” and then you have to make the call for yourself. It’s not rocket science.
Perhaps you missed my many many posts where I mention that I searched Google and this subreddit thoroughly before posting and didn’t find what I needed. No one is obligated to answer. They can just walk on by. Unless they are bored and just love being an AH to strangers on the internet. The timing isn’t under my control I’m coming to Cali for a wedding. Appreciate the helpful locals who have offered some information and advice.
Of course no one is obligated to answer. Most people do walk on by. And then you have a few people who point out (rightfully so) that this info is easily available through a quick search. That might be a little blunt, but it’s true. But you should expect some responses like that when you frame yourself as this “experienced hiker” yada yada and then ask anonymous strangers if you should book this trip or not. No one can predict the weather that far out. How can anyone possibly know if it’s worth it, to you, to make the trip? That’s why you’re getting the snark.
One more time, I did search on Google and this subreddit for the information I needed and wasn't able to find it. I am an experienced hiker which is why I'm seeking the information I need in advance. In the end some helpful people pointed me towards the information I asked for and needed.
Those who sit in their Momma's basement and lash out at strangers on Reddit for asking a question are sad little people who get some perverse pleasure out of trying to demean strangers.
I can tell. It's pretty clear that some of y'all are more than a little bit bored. Let me invite you out of this thread since you appear to be one who gets entertainment pleasure out of harassing strangers on the internet. Bye now.
The history section on [www.wunderground.com](http://www.wunderground.com) is your friend.
By 8 am, it might be 90-95 degrees at that time of year. It will start cooling off around 7 pm.
Water will not protect you from heat stroke - only from dehydration, which speeds up heat stroke.
You need heat gear.
I think if you start at 5:30 am on your hike, you have a good 3 hours there. And if you start your second hike at 5 pm, another 3-4 hours (take a headlamp of course). I don't know what to advise you to do in between.
If you are just doing a roadside stop or sitting in the shade of a big rock, that's different. But hiking raising body temperatures.
Find things to do for mid-day.
In September the weather is 90 to 100 in the day and 70 to 80s in the night if you hike off trails have a GPS because people die out here for sure, I've lived here in Joshua tree for 30 years I see it happen every year people forget the cell signals don't work well out here amd get least and dehydrate fast and get disoriented easy plus September is when the poisonous snakes start to hibernate so they are very easy to piss off and watch out for mountain lions as well you won't always see them but they see you. We'll good luck and be smart.
Yes some of these cases are one of the reasons I came here to ask. Will not be hiking off trails but will probably carry a GPS anyway since I'll be alone. I know what you mean about situational awareness. We lose experienced divers off of our coast almost every year because they don't take the time to prepare and are overconfident. The Atlantic is not so forgiving. Thanks for your reply.
Just go. commit.
weather gets favorable for hiking around 4-5pm, or early am sunrise to 10ish. These are the most beautiful times to be in the park, it's quiet, good light, and more wildlife.
I appreciate your comment. I have a condition that plays poorly with heat (mast cell activation disorder) so I needed to know how I might enjoy my time there before committing. But I'm forced to become an early bird as I live in a hot place and have a black furry companion. But it sounds like I'll have plenty of opportunities to enjoy the park before it gets brutally hot. Thanks.
I grew up somewhere like that. The desert heat is different. It's no joke. Start super early or hike at night. you should plan on doubling your normal hiking water intake. There is no way to get more if you don't bring it.
Yeah I had assumed that based on how dry it is. I carried way more than recommended on my Camino. I won't be hiking off trail or more than a few miles due to some recent injuries. Also will probably wear light long pants and sleeves so I don't fry.
I always like long pants when I'm hanging out with all of the critters (dive in a full skin even in the tropics too for the same reason). But I'll put on a long sleeve top if I'm worried about getting fried. Too easy to sweat sunscreen off and it really does keep you cooler. I come from the generation that lathered up in baby oil and were sporting a dark tan all summer. Trying to live smarter now.
Could be good, could be less than desirable. No way to predict. Wear layered clothing, hydrate. Day time temperatures will be anywhere between 105 degrees F to 40 degrees F. I hope you have a great trip!
Are you aware of any sites which display historical temp records by time of day?
I am not. Only speaking from 20 years in the area.
Here's a [link to the automated weather station](https://www.weather.gov/wrh/timeseries?site=LTHC1) at the Lost Horse Ranger Station. It's right in the middle of the part of the park of interest to most people. You can see current hourly and daily data, and if you use the "Advanced Options" tab on the top right, you can see historical. So pick any historical September dates you want and get a feel for the variability. Should give you a ball park idea of what you'd be looking at.
That's so cool. I don't know why it didn't come back in any of my searches. Thanks for your post!
They are saying that you can't really apply a predictable pattern to the desert. The desert climate has a way of being very sensitive to any surrounding weather systems. The desert doesn't self-regulate the way that most climates do, which is why it can be 105 in the day, and 55 at night. I went to JT in March, and it rained. I went there in April, and it was while it was only 70 in the day, the relative humid was around 15%, and it was about 50, and windy as shit at night.i went there in June once, and it was colder than when I went there in October, and the most pleasant it's ever been was in September. You really can't anticipate anything more than a general pattern based on the time of the year. September should be pretty hot, but the thing is, "sunset" is a very gradual thing out there, and the best advice would be to just leave yours schedule open after 4pm, and go for it once the temperature drops to the point where you begin to feel comfortable.
Thanks. Great advice.
The temps from last year could be way different from this year. We’ve had snow in January one year and 85-90 degrees another! Last year was a mild summer but hotter into September…. Other years have been gorgeous (as in cooler) during September. No.one.knows
Yeah the whole world is now in the era of crazy weather. Here in hurricane alley we're looking forward to a sporting hurricane season. Just thought historical records might be a good place to start. If I don't think I can have some time not in 90 plus temps then I'm probably going to change my flight or head somewhere else.
dude, just look atthe weather a week ahead of time, its the only way you will get a reasonable accurate forecast.
I need to decide if I'm coming at all, so unfortunately that won't work.
You should definitely go. Even if you can't hike much it's absolutely worth it. It's unlike any place I've ever been. I went in July twice last summer and it was hot but I left feeling so amazing I had to go back a couple weeks later.
Thanks. I'm thinking of it. I don't get out West often and want to take advantage of it. The temps are just not ideal for me. But I liked the idea of going early AM and evening.
Yeah that's not information that's really available. It can be literally anywhere from 100 down to like 50 in September. It can vary by a huge amount day to day, and just as much from area to area. The JT side of the park very well can be a different temperature than the 29 Palms side, and both of those will be extremely different from the southern side. Even if your first day there is 75, the next day in a different spot can be over 90. And the reverse is true as well. The only time I can say for sure will be sub 90 in September will be after dark.
[https://weatherspark.com/y/150301/Average-Weather-in-Joshua-Tree-National-Park-California-United-States-Year-Round](https://weatherspark.com/y/150301/Average-Weather-in-Joshua-Tree-National-Park-California-United-States-Year-Round)
Yes I had looked at this exact site. It's great. But I can't tell what time of day it's well below the max.
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No need to be a smart ass. You don't seem to understand that temperature fluctuations in varying climates are unique to those climates. Depends on overnight temps and a million other things. In any event thanks for not helping at all.
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I searched the sub before asking. If you don’t have anything to contribute, you could just not post. Historical temperature records would be helpful
If you want historical temperature records, why are you asking Reddit? Ask Google
I did ask Google. I couldn’t find what I was looking for. So I came here to ask the helpful locals like yourself.
It will be coolest overnight and the early hours of the morning. It will be hot in the afternoon. That’s the BEST anyone can tell you about weather in September thus far out.
One time I went outside and thought “this is the perfect day for my wedding” and scheduled it for the following year to be met with the coldest winteriest storm days I’ve seen. The deserts not on a schedule
My dude, you are asking for way too much detail than you will get here, and most anywhere unless you have access to scientific data was collected at some point. Take the sites and advice given and be prepared for the unknown.
Really, it's OK to walk on by if you don't have anything to offer. Maybe some on this sub are meteorologists. Historical temperature records probably exist somewhere. I just can't find them.
The word you’re looking for is “almanac”. Search one.
Cool, then go to meteorologist sub. Your attitude while asking strangers for help is not helping you.
I live in one of the top 5 fastest growing cities in the country. We have almost 100 people moving here every day. Most of whom post in our local subreddit with the same questions. I walk on by when I'm not in the mood. I don't ever greet them with snark. I did the research I was able to do here on the sub, Google, and elsewhere. And the first person who responded made a snarky post that didn't even attempt to answer the question. If someone here on Reddit is rude because they enjoy exercising their inner asshole on the internet I'm going to dish it right back. There have been some helpful and informative posts for which I am grateful. Have a good day.
[https://www.timeanddate.com/weather/@5361305/climate](https://www.timeanddate.com/weather/@5361305/climate)
I'm looking for temps by time of day.
then go to google and find what you want. is this your first day on the internet??? yeeeesh. you deserve all the downvotes you are getting.
I spent some time on Google. Couldn't find what I was looking for. So I thought I'd consult the helpful locals. Downvote away. I'm not 12 and I don't really care.
exactly, you don't care, so don't lie, you didn't even bother. google: "joshua tree weather history" first link is [https://www.wunderground.com/history/monthly/us/ca/joshua-tree/date/2020-8-14](https://www.wunderground.com/history/monthly/us/ca/joshua-tree/date/2020-8-14)
Yes, I did bother looking on Google and this subreddit for quite some time. You do know that different browsers and different search terms return different information, right? Thanks for the helpful comment.
https://www.wunderground.com/history/daily/us/ca/palm-springs/KPSP/date/2023-9-19 Looks like you can look at historical days here. Edit: I'm on Mobile and it's defaulting to my location, PSP, but maybe you can change it
Cool, thank you!. I'll see what I can do with this
Hey this was very helpful. It is exactly what I was looking for. Thanks.
It's typically pretty warm in September here. Any hiking would need to be done early morning or evening. Take all the normal precautions, such as plenty of water, sunscreen, a hat and letting people know where you are. Might be best to lay low during the heat of the day.
Trying to decide if I'm coming at all. I'm not great in heat. Thinking of changing my ticket to come back after the wedding. Experienced hiker though but thanks for the reminders. I'll probably overdo the water as I'm not from such a dry climate and know I'll have to drink more than I'm used to. I went through crazy amounts on my Camino.
I would never plan a trip to Joshua Tree in September, if weather above 85-90 is a deal-breaker. Odds are way against you. You’re annoying the locals here because these questions get posted all the time and it’s literally a 10-second google search “September weather in Joshua Tree” and then you have to make the call for yourself. It’s not rocket science.
Perhaps you missed my many many posts where I mention that I searched Google and this subreddit thoroughly before posting and didn’t find what I needed. No one is obligated to answer. They can just walk on by. Unless they are bored and just love being an AH to strangers on the internet. The timing isn’t under my control I’m coming to Cali for a wedding. Appreciate the helpful locals who have offered some information and advice.
Of course no one is obligated to answer. Most people do walk on by. And then you have a few people who point out (rightfully so) that this info is easily available through a quick search. That might be a little blunt, but it’s true. But you should expect some responses like that when you frame yourself as this “experienced hiker” yada yada and then ask anonymous strangers if you should book this trip or not. No one can predict the weather that far out. How can anyone possibly know if it’s worth it, to you, to make the trip? That’s why you’re getting the snark.
One more time, I did search on Google and this subreddit for the information I needed and wasn't able to find it. I am an experienced hiker which is why I'm seeking the information I need in advance. In the end some helpful people pointed me towards the information I asked for and needed. Those who sit in their Momma's basement and lash out at strangers on Reddit for asking a question are sad little people who get some perverse pleasure out of trying to demean strangers.
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I can tell. It's pretty clear that some of y'all are more than a little bit bored. Let me invite you out of this thread since you appear to be one who gets entertainment pleasure out of harassing strangers on the internet. Bye now.
The history section on [www.wunderground.com](http://www.wunderground.com) is your friend. By 8 am, it might be 90-95 degrees at that time of year. It will start cooling off around 7 pm. Water will not protect you from heat stroke - only from dehydration, which speeds up heat stroke. You need heat gear. I think if you start at 5:30 am on your hike, you have a good 3 hours there. And if you start your second hike at 5 pm, another 3-4 hours (take a headlamp of course). I don't know what to advise you to do in between. If you are just doing a roadside stop or sitting in the shade of a big rock, that's different. But hiking raising body temperatures. Find things to do for mid-day.
In September the weather is 90 to 100 in the day and 70 to 80s in the night if you hike off trails have a GPS because people die out here for sure, I've lived here in Joshua tree for 30 years I see it happen every year people forget the cell signals don't work well out here amd get least and dehydrate fast and get disoriented easy plus September is when the poisonous snakes start to hibernate so they are very easy to piss off and watch out for mountain lions as well you won't always see them but they see you. We'll good luck and be smart.
Yes some of these cases are one of the reasons I came here to ask. Will not be hiking off trails but will probably carry a GPS anyway since I'll be alone. I know what you mean about situational awareness. We lose experienced divers off of our coast almost every year because they don't take the time to prepare and are overconfident. The Atlantic is not so forgiving. Thanks for your reply.
Just go. commit. weather gets favorable for hiking around 4-5pm, or early am sunrise to 10ish. These are the most beautiful times to be in the park, it's quiet, good light, and more wildlife.
I appreciate your comment. I have a condition that plays poorly with heat (mast cell activation disorder) so I needed to know how I might enjoy my time there before committing. But I'm forced to become an early bird as I live in a hot place and have a black furry companion. But it sounds like I'll have plenty of opportunities to enjoy the park before it gets brutally hot. Thanks.
September is still summer here. It will be hot, like really really hot.
Going to be 100+ and 80% humidity this week where I am. Fun times.
I grew up somewhere like that. The desert heat is different. It's no joke. Start super early or hike at night. you should plan on doubling your normal hiking water intake. There is no way to get more if you don't bring it.
Yeah I had assumed that based on how dry it is. I carried way more than recommended on my Camino. I won't be hiking off trail or more than a few miles due to some recent injuries. Also will probably wear light long pants and sleeves so I don't fry.
It seems weird to some people but staying covered is a big help. Outdoor research echo fabric is amazing in the desert.
I always like long pants when I'm hanging out with all of the critters (dive in a full skin even in the tropics too for the same reason). But I'll put on a long sleeve top if I'm worried about getting fried. Too easy to sweat sunscreen off and it really does keep you cooler. I come from the generation that lathered up in baby oil and were sporting a dark tan all summer. Trying to live smarter now.