Average Temperatures for Colorado in September





Average temperatures for September at cities, towns and parks throughout Colorado are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for Western Colorado and Eastern Colorado.

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.

Western Colorado

Average September temperatures
High °F Low °F Place High °C Low °C
75 37 Alamosa 24 3
67 40 Aspen 19 4
58 32 Climax 15 0
80 54 Colorado National Monument 27 12
80 48 CortezĀ  27 9
66 31 Crested Butte 19 0
76 47 Dinosaur National Monument 25 8
76 45 Durango 24 7
78 44 Glenwood Springs 26 7
82 53 Grand Junction 28 11
70 34 Gunnison 21 1
62 32 Leadville 16 0
76 50 Mesa Verde National Park 24 10
69 45 Ouray 21 7
66 30 Silverton 19 -1
74 36 Steamboat Springs 23 2
64 34 Taylor Park Reservoir 18 1
68 34 Telluride 20 1
67 34 Vail 19 1

Front Range & Eastern Colorado

Average daily temperatures in September
High °F Low °F Place High °C Low °C
79 48 Boulder 26 9
81 50 Burlington 27 10
80 48 Canon City  27 9
77 49 Colorado Springs 25 9
80 48 Denver 27 9
70 39 Estes Park 21 4
71 33 Florissant Fossil Beds Monument 21 1
77 48 Fort Collins 25 9
72 44 Great Sand Dunes National Monument 22 6
82 49 Greeley 28 9
76 49 Lakewood 25 9
83 50 Pueblo 28 10
81 49 Sterling 27 9
80 52 Trinidad 26 11
Reference

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

Colorado Temperatures
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