Average 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

Average Annual Temperatures in Montana

Northwestern Montana

Southwestern Montana

South - Central Montana

Eastern Montana

Reference

More Montana Weather Information