Butte weather in August 2025

Expect 25°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Butte in August. Check more long-term weather averages for Butte in August before you book your next holiday to Montana in 2025/2026.

  • 25°C maximum daytime temperature in August in Butte25
    25°C max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in August in Butte8
    8 days with some rainfall
  • 7°C minimum night-time temperature in August in Butte7
    7°C min night temperature
  • 14 hours of daylight per day in August in Butte14
    14 hours of daylight per day
  • No heat & humidity in August in Butte0
    No heat & humidity
  • 35 mm monthly rainfall in August in Butte35
    35 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Butte8
    8 (Very High) UV index

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The August weather guide for Montana (Butte) 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 Butte in August?

Daytime temperatures usually reach 25°C in Butte in August with no heat and humidity, falling to 7°C at night.

How sunny is it in Butte in August?

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

Does it rain in Butte in August?

There are usually 8 days with some rain in Butte in August and the average monthly rainfall is 35mm.

Butte August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:13 19:59
Saturday, 16th August 2025 05:31 19:36
Sunday, 31st August 2025 05:50 19:10

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