Average Annual Temperatures in Montana

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

The tables give the normals for maximum and minimum yearly temperatures based on weather data collected from 1981 to 2010.

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

Northwestern Montana

Average annual temperatures
High °F Low °F Place High °C Low °C
54 30 Cut Bank 12 -1
52 28 East Glacier Park 11 -2
58 36 Flathead Lake, Polson 14  2
53 30 Gibson Reservoir Dam 12 -1
55 31 Kalispell 13  0
60 34 Libby 16  1
58 34 Missoula 15  1
54 25 Polebridge 12 -4
56 32 Rogers Pass 13  0
56 28 Seeley Lake 14 -2
54 32 West Glacier 12  0
54 31 Whitefish 12  0

Southwestern Montana

Average temperatures for the year
High °F Low °F Place High °C Low °C
58 31 Bozeman 14  0
54 26 Butte 12 -3
56 27 Deer Lodge 13 -3
59 33 Gardiner 15  1
50 24 Hebgen Lake Dam 10 -4
58 33 Helena 15  0
57 27 Sula 14 -3
57 30 Virginia City 14 -1
49 20 West Yellowstone   9 -7

South - Central Montana

Average yearly temperatures
High °F Low °F Place High °C Low °C
61 37 Bighorn Lake, Yellowtail Dam 16  3
60 37 Billings 15  3
48 21 Cooke City   9 -6
53 33 Mystic Lake 12  0
55 30 Red Lodge 13 -1

Eastern Montana

Annual average temperature
High °F Low °F Place High °C Low °C
57 30 Culbertson 14 -1
59 31 Elwell Lake, Tiber Dam 15 -1
60 33 Fort Peck Lake Dam 15  1
55 31 Glasgow 13  0
59 35 Glendive 15  1
57 32 Great Falls 14  0
57 30 Havre City 14 -1
56 31 Lewistown 13 -1
59 34 Miles City 15  1
Reference

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

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