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Death Valley weather in September 2025
Expect 40°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Death Valley in September. Check more long-term weather averages for Death Valley in September before you book your next holiday to California in 2025/2026.
- 4040°C max day temperature
- 11 hours of sunshine per day
- 11 day with some rainfall
- 2424°C min night temperature
- 1212 hours of daylight per day
- VHVery High heat & humidity
- 44 mm of monthly rainfall
- 88 (Very High) UV index
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Recommended for California
The September weather guide for California (Death Valley) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about California
How hot is it in Death Valley in September?
Daytime temperatures usually reach 40°C in Death Valley in September with very high heat and humidity, falling to 24°C at night.
How sunny is it in Death Valley in September?
There are normally 11 hours of bright sunshine each day in Death Valley in September - that's 91% of daylight hours.
Does it ever rain in Death Valley in September?
There is usually 1 day with some rain in Death Valley in September and the average monthly rainfall is 4mm.
Death Valley September sunrise & sunset times
Browse the sunrise and sunset times for Death Valley in September 2025. Select a month to view Death Valley sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:19 | 18:15 |
Monday, 15th September 2025 | 05:30 | 17:54 |
Tuesday, 30th September 2025 | 05:42 | 17:32 |
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