Average October Temperatures for Montana

Average temperatures for October 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 1991 to 2020 by the US National Centers for Environmental Information.

Northwestern Montana

Average October temperatures
High °F	Low °F	Place	High °C	Low °C
54	30	Cut Bank	12	-1
50	29	East Glacier Park	10	-1
54	29	Gibson Reservoir Dam	12	-2
54	29	Kalispell	12	-2
59	34	Libby	15	1
56	32	Missoula	13	0
54	26	Polebridge	12	-4
56	36	Polson	13	2
55	32	Rogers Pass	13	0
56	29	Seeley Lake	13	-2
52	33	West Glacier	11	0
53	31	Whitefish	11	-1

Southwestern Montana

Average daily temperatures in October
High °F	Low °F	Place	High °C	Low °C
57	31	Anaconda	14	-1
57	32	Bozeman	14	0
54	27	Butte	12	-3
55	26	Deer Lodge	13	-3
56	30	Dillon	14	-1
60	34	Gardiner	15	1
51	28	Hebgen Lake Dam	10	-2
58	34	Helena	14	1
58	27	Sula	15	-3
58	31	Virginia City	14	0
51	21	West Yellowstone	10	-6

South - Central Montana

October temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
61	38	Bighorn Lake, Yellowtail Dam	16	3
59	37	Billings	15	3
47	24	Cooke City	8	-4
52	32	Mystic Lake	11	0
56	31	Red Lodge	14	0

Eastern Montana

Average October temperatures
High °F	Low °F	Place	High °C	Low °C
59	31	Culbertson	15	0
60	32	Elwell Lake, Tiber Dam	15	0
61	37	Fort Peck Lake Dam	16	3
57	34	Glasgow	14	1
60	36	Glendive	15	2
57	33	Great Falls	14	0
58	31	Havre City	14	-1
56	31	Lewistown	13	-1
59	34	Miles City	15	1

Average Temperatures for Montana in October

Northwestern Montana

Southwestern Montana

South - Central Montana

Eastern Montana

Reference

More Montana Weather Information