ClimateAverages

Denver Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
15°C
Partly cloudy · feels like 15°C
Humidity
87%
Wind
6 kph NW
UV
0
Rain
0%
Updated Jul 9, 05:45 AMWeather data by WeatherAPI.com
September daytime high
25.7°C
September overnight low
8.2°C
September average
17.0°C

In September, Denver typically sees daytime highs of 25.7°C and overnight lows around 8.2°C. Compared to the annual average high of 18.1°C, September runs +7.5°C.

vs. annual avg high
+7.5°C
Rank among 12 months
#4 warmest
Hottest year overall
1933

Where September ranks in Denver

JanFebMarAprMayJunJulAugSep26°OctNovDec

FAQ

What is the average temperature in Denver in September?

September in Denver averages a daytime high of 25.7°C and an overnight low of 8.2°C.

Is September warm or cold in Denver?

September runs +7.5°C compared to Denver's annual average high of 18.1°C, ranking #4 of 12 months by warmth.

What should I pack for Denver in September?

Plan for daytime highs near 25.7°C and cooler evenings around 8.2°C.

Other months for Denver

JanuaryFebruaryMarchAprilMayJuneJulyAugustOctoberNovemberDecember

September in nearby cities

Colorado SpringsAuroraFort CollinsLakewoodThorntonArvadaWestminsterCentennialPuebloBoulderGreeleyHighlands Ranch