Average Temperatures in Montana

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

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

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

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