Average Annual Temperatures in Montana





Average annual temperatures for 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 yearly temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Northwestern Montana

Average annual temperatures
High °F Low °F Place High °C Low °C
54 29 Cut Bank 12 -1
49 28 East Glacier Park 10 -2
54 27 Gibson Reservoir Dam 12 -3
55 31 Kalispell 13 -1
61 34 Libby 16 1
57 34 Missoula 14 1
55 25 Polebridge 13 -4
57 36 Polson 14 2
56 32 Rogers Pass 13 0
56 28 Seeley Lake 13 -2
53 33 West Glacier 12 1
53 32 Whitefish 12 0

Southwestern Montana

Average temperatures for the year
High °F Low °F Place High °C Low °C
57 30 Anaconda 14 -1
56 32 Bozeman 13 0
54 26 Butte 12 -3
54 26 Deer Lodge 12 -3
56 30 Dillon 13 -1
59 34 Gardiner 15 1
50 25 Hebgen Lake Dam 10 -4
58 33 Helena 14 1
57 27 Sula 14 -3
57 31 Virginia City 14 -1
51 20 West Yellowstone 11 -7

South - Central Montana

Average yearly temperatures
High °F Low °F Place High °C Low °C
61 38 Bighorn Lake, Yellowtail Dam 16 3
59 37 Billings 15 3
47 22 Cooke City 8 -6
52 31 Mystic Lake 11 0
56 31 Red Lodge 14 -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
59 34 Fort Peck Lake Dam 15 1
55 33 Glasgow 13 0
59 35 Glendive 15 2
57 32 Great Falls 14 0
57 31 Havre City 14 -1
56 31 Lewistown 13 -1
59 34 Miles City 15 1
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Montana Temperatures
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