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United StatesThe weather in September in Joshua Tree National Park
It's hot in September in Joshua Tree National Park with an average temperature of 38°C. Temperatures this month range from a low of 35°C to a high of 41°C. At night, you can expect temperatures between 20°C and 27°C.
September isn’t a good month to be in Joshua Tree National Park. The average temperature of 38°C this month is uncomfortably hot for a comfortable stay.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Joshua Tree National Park, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 47°C in 2020, Joshua Tree National Park reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 14°C to a highest value of 33°C.
Rainfall amount
According to weather history, there is only 7,7 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in September for Joshua Tree National Park
Click on any day in September to get detailed info about the usual weather on that day in Joshua Tree National Park. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Joshua Tree National Park | New York | |
|---|---|---|
| Average temperature | 38°C | 27°C |
| Max. temperature | 41°C | 31°C |
| Min. temperature | 20°C | -5°C |
| Total precipitation | 7,7 mm | 57 mm |
| Rainy days | 2 days | 9 days |
Start of September
The month of September starts in Joshua Tree National Park with hot temps, averaging around 40°C during the day and nights around 26°C.
Mid September
By mid-September, daytime temps drop to around 39°C, with nights around 23°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Joshua Tree National Park is around 37°C, while nighttime temps are about 22°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Joshua Tree National Park for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Joshua Tree National Park, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Joshua Tree National Park
Temperature in September in Joshua Tree National Park over the years
Precipitation charts
These charts show the average amount of precipitation in September in Joshua Tree National Park, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Joshua Tree National Park
Total precipitation in September in Joshua Tree National Park over the years
Daily UV index in September in Joshua Tree National Park
This chart shows the average daily UV index in September in Joshua Tree National Park, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Joshua Tree National Park
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Average weather in Joshua Tree National Park by month
Click on a month below to see detailed weather info for Joshua Tree National Park. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.