Average Temperatures for Montana in August





Average temperatures for August at cities, towns, parks and lakes throughout Montana are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Northwestern, Southwestern, South - Central and Eastern Montana.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center.

Northwestern Montana

Average August temperatures
High °F Low °F Place High °C Low °C
79 48 Cut Bank 26 9
75 44 East Glacier Park 24 7
84 53 Flathead Lake, Polson 29 12
77 44 Gibson Reservoir Dam 25 7
81 47 Kalispell 27 8
88 47 Libby 31 8
85 50 Missoula 29 10
79 38 Polebridge 26 3
80 49 Rogers Pass 27 9
83 43 Seeley Lake 28 6
79 47 West Glacier 26 8
80 48 Whitefish 27 9

Southwestern Montana

Average daily temperatures in August
High °F Low °F Place High °C Low °C
83 49 Bozeman 28 10
80 44 Butte 26 7
80 42 Deer Lodge 27 6
86 52 Gardiner 30 11
78 43 Hebgen Lake Dam 26 6
85 52 Helena 29 11
81 41 Sula 27 5
81 47 Virginia City 27 9
77 37 West Yellowstone 25 3

South - Central Montana

August temperatures: daily averages
High °F Low °F Place High °C Low °C
88 56 Bighorn Lake, Yellowtail Dam 31 13
86 57 Billings 30 14
74 37 Cooke City 23 3
75 51 Mystic Lake 24 10
79 48 Red Lodge 26 9

Eastern Montana

Average August temperatures
High °F Low °F Place High °C Low °C
87 54 Culbertson 30 12
85 51 Elwell Lake, Tiber Dam 29 10
88 56 Fort Peck Lake Dam 31 14
84 56 Glasgow 29 13
88 58 Glendive 31 15
82 50 Great Falls 28 10
84 52 Havre City 29 11
81 50 Lewistown 27 10
87 58 Miles City 31 14
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Montana Temperatures
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