Kalispell weather in August 2025

Expect 79°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Kalispell in August. Check more long-term weather averages for Kalispell in August before you book your next holiday to Montana in 2025/2026.

  • 79°F maximum daytime temperature in August in Kalispell79
    79°F max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in August in Kalispell8
    8 days with some rainfall
  • 46°F minimum night-time temperature in August in Kalispell46
    46°F min night temperature
  • 14 hours of daylight per day in August in Kalispell14
    14 hours of daylight per day
  • Low heat & humidity in August in KalispellL
    Low heat & humidity
  • 1.5 inches monthly rainfall in August in Kalispell1.5
    1.5 inches of monthly rainfall
  • UV (maximum) index 7 (High) in August in Kalispell7
    7 (High) UV index

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

Daytime temperatures usually reach 79°F in Kalispell in August with low heat and humidity, falling to 46°F at night.

How sunny is it in Kalispell in August?

There are normally 10 hours of bright sunshine each day in Kalispell in August - that's 72% of daylight hours.

Does it rain in Kalispell in August?

There are usually 8 days with some rain in Kalispell in August and the average monthly rainfall is 1.5 inches.

Kalispell August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:13 20:13
Saturday, 16th August 2025 05:34 19:48
Sunday, 31st August 2025 05:54 19:20

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