Average Temperatures for Wyoming in September





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

Northwest Wyoming

Average September temperatures
High °F Low °F Place High °C Low °C
68 39 Alta 20 4
72 46 Cody 22 8
71 32 Jackson 22 0
70 33 Moose 21 1
68 32 Moran 20 0
62 32 Yellowstone Lake 16 0
67 38 Yellowstone Park, Mammoth 20 4
64 29 Yellowstone Park, Old Faithful 18 -2

Southwest Wyoming

Average daily temperatures in September
High °F Low °F Place High °C Low °C
71 38 Evanston 22 3
70 35 Fontenelle Reservoir Dam 21 2
71 33 Fossil Butte Monument 22 1
68 33 Kemmerer 20 0
70 43 Rock Springs 21 6

North - Central Wyoming

September temperatures: daily averages
High °F Low °F Place High °C Low °C
75 47 Boysen Reservoir Dam 24 8
58 32 Burgess Junction 15 0
73 44 Lander 23 7
75 41 Riverton 24 5
66 34 South Pass City 19 1
72 38 Ten Sleep 22 3
81 45 Thermopolis 27 7
75 43 Worland 24 6

Northeast Wyoming

Average September temperatures
High °F Low °F Place High °C Low °C
71 44 Buffalo 22 7
74 40 Devils Tower 23 5
74 45 Gillette 24 7
74 42 Sheridan 23 5
74 44 Sundance 23 7

Southeast Wyoming

Average September temperatures
High °F Low °F Place High °C Low °C
74 41 Casper 24 5
67 36 Centennial 19 2
72 45 Cheyenne 22 7
74 41 Douglas 23 5
69 38 Laramie 20 3
73 44 Muddy Gap 23 7
71 40 Rawlins 22 5
78 43 Torrington 25 6
Reference

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

Wyoming Temperatures
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