Average Temperatures for Wyoming in May





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

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

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.

Northwest Wyoming

Average May temperatures
High °F Low °F Place High °C Low °C
60 36 Alta 16 2
64 42 Cody 18 6
60 32 Jackson 16 0
62 33 Moose 16 0
56 31 Moran 14 -1
50 29 Yellowstone Lake 10 -2
60 35 Yellowstone Park, Mammoth 15 1
55 29 Yellowstone Park, Old Faithful 13 -2
56 28 Yellowstone Park, South Entrance 14 -2

Southwest Wyoming

Average daily temperatures in May
High °F Low °F Place High °C Low °C
63 35 Evanston 17 1
63 31 Fontenelle Reservoir Dam 17 -1
63 30 Fossil Butte Monument 17 -1
63 31 Kemmerer 17 -1
63 38 Rock Springs 17 4

North - Central Wyoming

May temperatures: daily averages
High °F Low °F Place High °C Low °C
69 43 Boysen Reservoir Dam 20 6
50 28 Burgess Junction 10 -2
66 39 Lander 19 4
67 40 Riverton 20 5
59 28 South Pass City 15 -2
65 37 Ten Sleep 18 3
71 43 Thermopolis 22 6
70 40 Worland 21 4

Northeast Wyoming

Average May temperatures
High °F Low °F Place High °C Low °C
62 37 Buffalo 17 3
66 39 Devils Tower 19 4
66 41 Gillette 19 5
66 39 Sheridan 19 4
63 39 Sundance 17 4

Southeast Wyoming

Average May temperatures
High °F Low °F Place High °C Low °C
67 37 Casper 19 3
61 32 Centennial 16 0
64 40 Cheyenne 18 5
68 39 Douglas 20 4
60 36 Laramie 16 2
68 39 Muddy Gap 20 4
64 36 Rawlins 18 2
71 41 Torrington 22 5
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Wyoming Temperatures
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