Average Temperatures for Montana in May





Average temperatures for May 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 1981 to 2010 by the US National Climatic Data Center.

Northwestern Montana

Average May temperatures
High °F Low °F Place High °C Low °C
63 37 Cut Bank 17 3
58 34 East Glacier Park 15 1
67 42 Flathead Lake, Polson 19 5
59 35 Gibson Reservoir Dam 15 2
65 39 Kalispell 18 4
72 39 Libby 22 4
67 40 Missoula 20 4
63 32 Polebridge 17 0
62 38 Rogers Pass 17 3
65 35 Seeley Lake 18 2
65 38 West Glacier 18 3
63 38 Whitefish 17 3

Southwestern Montana

Average daily temperatures in May
High °F Low °F Place High °C Low °C
65 38 Bozeman 19 3
61 34 Butte 16 1
63 33 Deer Lodge 17 1
68 39 Gardiner 20 4
59 32 Hebgen Lake Dam 15 0
67 41 Helena 20 5
64 34 Sula 18 1
64 36 Virginia City 18 2
59 29 West Yellowstone 15 -2

South - Central Montana

May temperatures: daily averages
High °F Low °F Place High °C Low °C
68 43 Bighorn Lake, Yellowtail Dam 20 6
68 44 Billings 20 6
56 28 Cooke City 13 -2
59 37 Mystic Lake 15 3
62 36 Red Lodge 17 2

Eastern Montana

Average May temperatures
High °F Low °F Place High °C Low °C
71 41 Culbertson 22 5
70 40 Elwell Lake, Tiber Dam 21 4
72 44 Fort Peck Lake Dam 22 6
68 42 Glasgow 20 6
70 45 Glendive 21 7
65 39 Great Falls 18 4
68 41 Havre City 20 5
63 38 Lewistown 17 3
69 43 Miles City 20 6
Reference

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

Montana Temperatures
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