Missoula weather in August 2025

Q: How hot is it in Missoula in August?

Daytime temperatures usually reach 28°C in Missoula in August with low heat and humidity, falling to 9°C at night.

Q: How sunny is it in Missoula in August?

There are normally 11 hours of bright sunshine each day in Missoula in August - that's 76% of daylight hours.

Q: Does it rain in Missoula in August?

There are usually 8 days with some rain in Missoula in August and the average monthly rainfall is 31mm.

Expect 82°F daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Missoula in August. Check more long-term weather averages for Missoula in August before you book your next holiday to Montana in 2025/2026.

82
82°F max day temperature
11
11 hours of sunshine per day
8
8 days with some rainfall
48
48°F min night temperature
14
14 hours of daylight per day
L
Low heat & humidity
1.2
1.2 inches of monthly rainfall
7
7 (High) UV index

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The August weather guide for Montana (Missoula) 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)

More about the USA

How hot is it in Missoula in August?

Daytime temperatures usually reach 82°F in Missoula in August with low heat and humidity, falling to 48°F at night.

How sunny is it in Missoula in August?

There are normally 11 hours of bright sunshine each day in Missoula in August - that's 76% of daylight hours.

Does it rain in Missoula in August?

There are usually 8 days with some rain in Missoula in August and the average monthly rainfall is 1.2 inches.

Missoula August sunrise & sunset times

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Friday, 1st August 2025	05:16	20:08
Saturday, 16th August 2025	05:35	19:44
Sunday, 31st August 2025	05:55	19:17

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Montana - quick facts
Flight time^✝	13 hours
Time difference	UK -7 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	Montana Office of Tourism