Death Valley weather in September 2025

Expect 104°F 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.

  • 104°F maximum daytime temperature in September in Death Valley104
    104°F max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in September in Death Valley1
    1 day with some rainfall
  • 75°F minimum night-time temperature in September in Death Valley75
    75°F min night temperature
  • 12 hours of daylight per day in September in Death Valley12
    12 hours of daylight per day
  • Very high heat & humidity in September in Death ValleyVH
    Very High heat & humidity
  • 0.2 inches monthly rainfall in September in Death Valley0.2
    0.2 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Death Valley8
    8 (Very High) UV index

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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)  |  Imperial (°F)

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How hot is it in Death Valley in September?

Daytime temperatures usually reach 104°F in Death Valley in September with very high heat and humidity, falling to 75°F 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 0.2 inches.

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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