Casper weather in August 2026

Expect daytime maximum temperatures of 84°F in Casper, Wyoming in August based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 84°F maximum daytime temperature in August in Casper84
    84°F max day temperature
  • 10 hours of sunshine per day
  • 6 days with some rainfall in August in Casper6
    6 days with some rainfall
  • 50°F minimum night-time temperature in August in Casper50
    50°F min night temperature
  • 14 hours of daylight per day in August in Casper14
    14 hours of daylight per day
  • Moderate heat & humidity in August in CasperM
    Moderate heat & humidity
  • 0.7 inches monthly rainfall in August in Casper0.7
    0.7 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Casper9
    9 (Very High) UV index

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The August weather guide for Wyoming (Casper) 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 Casper in August?

Daytime temperatures usually reach 84°F in Casper in August with moderate heat and humidity, falling to 50°F at night.

How sunny is it in Casper in August?

There are normally 10 hours of bright sunshine each day in Casper in August - that's 73% of daylight hours.

Does it rain in Casper in August?

There are usually 6 days with some rain in Casper in August and the average monthly rainfall is 0.7 inches.

Casper August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 04:57 19:26
Sunday, 16th August 2026 05:13 19:05
Monday, 31st August 2026 05:29 18:41

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