Average Temperatures for Colorado in September

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Average temperatures for September at cities, towns and parks throughout Colorado 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 Western Colorado and Eastern Colorado.

Western Colorado

Average September temperatures
High °F Low °F Place High °C Low °C
73 37 Alamosa 23   3
69 40 Aspen 21   4
79 31 Browns Park Wildlife Refuge 26  -1
80 55 Colorado National Monument 27 13
79 47 Cortez  26   8
65 31 Crested Butte 18   0
78 46 Dinosaur National Monument 26   8
75 43 Durango 24   6
76 44 Glenwood Springs 25   6
80 52 Grand Junction 27 11
69 33 Gunnison 21   0
61 31 Leadville 16  -1
75 49 Mesa Verde National Park 24   9
68 44 Ouray 20   6
71 35 Steamboat Springs 22   2
63 35 Taylor Park Reservoir 17   2
66 34 Telluride 19   1
66 34 Vail 19   1

Front Range & Eastern Colorado

Average daily temperatures in September
High °F Low °F Place High °C Low °C
78 48 Boulder 25   9
79 49 Burlington 26   9
79 48 Canon City 26   9
75 47 Colorado Springs 24   9
77 48 Denver 25   9
70 40 Estes Park 21   4
69 32 Florissant Fossil Beds Monument 21   0
76 46 Fort Collins 24   8
71 42 Great Sand Dunes Monument 22   6
83 48 Greeley 28   9
79 47 Lakewood 26   8
82 48 Pueblo 28   9
80 48 Sterling 27   9
80 49 Trinidad 26   9
Reference

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

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