Fresno weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Fresno in September. Check more long-term weather averages for Fresno in September before you book your next holiday to California in 2025/2026.

  • 90°F maximum daytime temperature in September in Fresno90
    90°F max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in September in Fresno1
    1 day with some rainfall
  • 59°F minimum night-time temperature in September in Fresno59
    59°F min night temperature
  • 12 hours of daylight per day in September in Fresno12
    12 hours of daylight per day
  • High heat & humidity in September in FresnoH
    High heat & humidity
  • 0.2 inches monthly rainfall in September in Fresno0.2
    0.2 inches of monthly rainfall
  • UV (maximum) index 7 (High) in September in Fresno7
    7 (High) UV index

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The September weather guide for California (Fresno) 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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More about California

How hot is it in Fresno in September?

Daytime temperatures usually reach 90°F in Fresno in September with high heat and humidity, falling to 59°F at night.

How sunny is it in Fresno in September?

There are normally 11 hours of bright sunshine each day in Fresno in September - that's 91% of daylight hours.

Does it ever rain in Fresno in September?

There is usually 1 day with some rain in Fresno in September and the average monthly rainfall is 0.2 inches.

Fresno September sunrise & sunset times

Browse the sunrise and sunset times for Fresno in September 2025. Select a month to view Fresno sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:30 18:27
Monday, 15th September 2025 05:42 18:06
Tuesday, 30th September 2025 05:54 17:43

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