Average Temperatures for Wyoming in May

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Average temperatures for May at cities, towns, parks and lakes throughout Wyoming are listed below in degrees Fahrenheit and Celsius.

The tables give the normals for maximum and minimum monthly temperatures based on weather data collected from 1981 to 2010.

You can jump to a separate table for each region of the state: Northwest, Southwest, North - Central, Northeast and Southeast Wyoming.

Northwest Wyoming

Average May temperatures
High °F Low °F Place High °C Low °C
59 35 Alta 15  2
66 41 Cody 19  5
64 31 Jackson 18  0
61 32 Moose 16  0
59 30 Moran 15 -1
52 28 Yellowstone Lake 11 -2
59 35 Yellowstone Park, Mammoth 15  2
55 28 Yellowstone Park, Old Faithful 13 -2

Southwest Wyoming

Average daily temperatures in May
High °F Low °F Place High °C Low °C
63 34 Evanston 17  1
63 33 Fontenelle Reservoir Dam 17  1
64 30 Fossil Butte Monument 18 -1
60 31 Kemmerer 16 -1
64 38 Rock Springs 18  3

North - Central Wyoming

May temperatures: daily averages
High °F Low °F Place High °C Low °C
69 42 Boysen Reservoir Dam 21  6
50 28 Burgess Junction 10 -2
67 40 Lander 19  5
69 40 Riverton 21  5
58 31 South Pass City 15 -1
66 37 Ten Sleep 19  3
74 42 Thermopolis 24  6
70 41 Worland 21  5

Northeast Wyoming

Average May temperatures
High °F Low °F Place High °C Low °C
64 40 Buffalo 18  5
67 38 Devils Tower 19  3
67 40 Gillette 19  4
67 38 Sheridan 19  3
67 40 Sundance 19  4

Southeast Wyoming

Average May temperatures
High °F Low °F Place High °C Low °C
67 37 Casper 20  3
61 31 Centennial 16  0
65 40 Cheyenne 18  5
68 39 Douglas 20  4
62 34 Laramie 16  1
67 38 Muddy Gap 20  3
64 35 Rawlins 18  2
71 41 Torrington 22  5
Reference

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

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