Galena weather in September 2025

Expect daytime maximum temperatures of 73°F in Galena, Illinois in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 4.1 inches of rainfall in the month.

  • 73°F maximum daytime temperature in September in Galena73
    73°F max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in September in Galena9
    9 days with some rainfall
  • 50°F minimum night-time temperature in September in Galena50
    50°F min night temperature
  • 12 hours of daylight per day in September in Galena12
    12 hours of daylight per day
  • No heat & humidity in September in Galena0
    No heat & humidity
  • 4.1 inches monthly rainfall in September in Galena4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Galena6
    6 (High) UV index

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The September weather guide for Illinois (Galena) 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 Galena in September?

Daytime temperatures usually reach 73°F in Galena in September, falling to 50°F at night.

How sunny is it in Galena in September?

There are normally 8 hours of bright sunshine each day in Galena in September - that's 61% of daylight hours.

Does it rain in Galena in September?

There are usually 9 days with some rain in Galena in September and the average monthly rainfall is 4.1 inches.

Galena September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:27 18:35
Monday, 15th September 2025 05:42 18:11
Tuesday, 30th September 2025 05:58 17:44

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