Measurements:
°C
°F
Denver
24°F
NE 6 mph
Feels like: 18°F
Precip: 0%
World Resorts USA Denver Weather September Weather in Denver

Denver Weather: September

Average Day Temperature: 82.1°F
Average Night Temperature: 59.7°F
Number of Sunny Days: 22 days
Sunshine Hours: 11.8 - 13.1 hours
Number of Rainy Days: 2 days
Precipitation Totals: 0.9 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 95°F. The lowest night temperature was 48°F. The average values for day and night temperatures during September were 80.5°F и 58.9°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Denver is 0.9 in.

Wind Speed in September, mph

The average wind speed in September is 5.8 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Denver in September is 9.9 hours.

Best Time to Visit Denver
The most sunny months:
October 23 days
August 22 days
September 22 days
The most warm months:
July 91.2 °F
August 90.0 °F
June 85.6 °F
The most cold months:
January 38.1 °F
February 39.5 °F
December 40.2 °F
The most rainy months:
May 5 days
June 3 days
July 3 days
The most windy months:
April 7 mph
June 6 mph
May 6 mph

Denver on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Denver
Local time: 23:46
05 dec, friday
0000 24°F
NE
6 mph
0300 24°F
N
6 mph
0600 24°F
N
4 mph
0900 28°F
N
4 mph
1200 40°F
NW
1 mph
1500 44°F
S
6 mph
1800 40°F
SE
2 mph
2100 32°F
N
6 mph