Measurements:
°C
°F
Denver
88°F
W 5 mph
Feels like: 84°F
Precip: 9%
World Resorts USA Denver Weather September Weather in Denver

Denver Weather: September

Average Day Temperature: 82.2°F
Average Night Temperature: 60.3°F
Number of Sunny Days: 21 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: 2026 2025 2024

The highest day temperature in September 2026 was 96°F. The lowest night temperature was 59°F. The average values for day and night temperatures during September were 84.0°F и 69.1°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 9.6 hours.

Best Time to Visit Denver
The most sunny months:
October 23 days
July 22 days
November 22 days
The most warm months:
July 91.6 °F
August 90.2 °F
June 85.7 °F
The most cold months:
January 38.4 °F
February 40.4 °F
December 40.9 °F
The most rainy months:
May 5 days
June 3 days
July 3 days
The most windy months:
April 7 mph
June 7 mph
May 6 mph

Denver on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Denver
Local time: 17:46
05 oct, monday
1800 88°F
W
5 mph
2100 80°F
S
5 mph
06 oct, tuesday
0000 74°F
NE
4 mph
0300 70°F
NE
4 mph
0600 68°F
NE
5 mph
0900 74°F
NE
4 mph
1200 86°F
N
1 mph
1500 90°F
W
6 mph