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West Yellowstone weather in August 2025
Expect 23°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in West Yellowstone in August. Check more long-term weather averages for West Yellowstone in August before you book your next holiday to Montana in 2025/2026.
- 2323°C max day temperature
- 10 hours of sunshine per day
- 88 days with some rainfall
- 44°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 4141 mm of monthly rainfall
- 88 (Very High) UV index
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Recommended for Montana
The August weather guide for Montana (West Yellowstone) 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)
More about the USA
How hot is it in West Yellowstone in August?
Daytime temperatures usually reach 23°C in West Yellowstone in August, falling to 4°C at night.
How sunny is it in West Yellowstone in August?
There are normally 10 hours of bright sunshine each day in West Yellowstone in August - that's 72% of daylight hours.
Does it rain in West Yellowstone in August?
There are usually 8 days with some rain in West Yellowstone in August and the average monthly rainfall is 41mm.
West Yellowstone August sunrise & sunset times
Browse the sunrise and sunset times for West Yellowstone in August 2025. Select a month to view West Yellowstone sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 05:11 | 19:50 |
Saturday, 16th August 2025 | 05:29 | 19:28 |
Sunday, 31st August 2025 | 05:46 | 19:02 |
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