Fresno weather in September 2026

Expect daytime maximum temperatures of 32°C in Fresno, California in September and high heat and humidity based on long-term weather averages. There are 11 hours of sunshine per day on average.

  • 32°C maximum daytime temperature in September in Fresno32
    32°C max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in September in Fresno1
    1 day with some rainfall
  • 15°C minimum night-time temperature in September in Fresno15
    15°C 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
  • 5 mm monthly rainfall in September in Fresno5
    5 mm 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Fresno in September?

Daytime temperatures usually reach 28°C in Fresno in September with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Fresno in September?

There are normally 9 hours of bright sunshine each day in Fresno in September - that's 75% of daylight hours.

Does it ever rain in Fresno in September?

There are usually 2 days with some rain in Fresno in September and the average monthly rainfall is 9mm.

Fresno September sunrise & sunset times

Browse the sunrise and sunset times for Fresno in September 2026. Select a month to view Fresno sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:30 18:27
Tuesday, 15th September 2026 05:41 18:06
Wednesday, 30th September 2026 05:54 17:44

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