Galena weather in August 2026

Expect daytime maximum temperatures of 81°F in Galena, Illinois in August based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 4.4 inches of rainfall in the month.

  • 81°F maximum daytime temperature in August in Galena81
    81°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in August in Galena9
    9 days with some rainfall
  • 59°F minimum night-time temperature in August in Galena59
    59°F min night temperature
  • 14 hours of daylight per day in August in Galena14
    14 hours of daylight per day
  • Low heat & humidity in August in GalenaL
    Low heat & humidity
  • 4.4 inches monthly rainfall in August in Galena4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Galena8
    8 (Very High) UV index

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The August 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 August?

Daytime temperatures usually reach 81°F in Galena in August with low heat and humidity, falling to 59°F at night.

How sunny is it in Galena in August?

There are normally 10 hours of bright sunshine each day in Galena in August - that's 69% of daylight hours.

Does it rain in Galena in August?

There are usually 9 days with some rain in Galena in August and the average monthly rainfall is 4.4 inches.

Galena August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 04:54 19:21
Sunday, 16th August 2026 05:10 19:01
Monday, 31st August 2026 05:26 18:37

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