Champaign weather in August 2025

Expect 82°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Champaign in August. Check more long-term weather averages for Champaign in August before you book your next holiday to Illinois in 2025/2026.

  • 82°F maximum daytime temperature in August in Champaign82
    82°F max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Champaign9
    9 days with some rainfall
  • 63°F minimum night-time temperature in August in Champaign63
    63°F min night temperature
  • 14 hours of daylight per day in August in Champaign14
    14 hours of daylight per day
  • Moderate heat & humidity in August in ChampaignM
    Moderate heat & humidity
  • 3.8 inches monthly rainfall in August in Champaign3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Champaign8
    8 (Very High) UV index

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The August weather guide for Illinois (Champaign) 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 Champaign in August?

Daytime temperatures usually reach 82°F in Champaign in August with moderate heat and humidity, falling to 63°F at night.

How sunny is it in Champaign in August?

There are normally 9 hours of bright sunshine each day in Champaign in August - that's 68% of daylight hours.

Does it rain in Champaign in August?

There are usually 9 days with some rain in Champaign in August and the average monthly rainfall is 3.8 inches.

Champaign August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:51 19:07
Saturday, 16th August 2025 05:06 18:48
Sunday, 31st August 2025 05:20 18:26

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