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Denver's Monthly Weather Summary for September 2026

Current conditions at

Fort Collins/Loveland - Northern Colorado Regional Airport (KFNL)

Lat: 40.45°NLon: 105.02°WElev: 5016ft.

Fair

81°F

27°C

Humidity	19%
Wind Speed	SW 7 mph
Barometer	30.07 in (1012.0 mb)
Dewpoint	35°F (2°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	8 Oct 5:56 pm MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles NNE Horsetooth Mountain CO

Tonight
Low: 53 °F
Decreasing
Clouds
Friday
High: 81 °F
Sunny
Friday Night
Low: 53 °F
Partly Cloudy
and Breezy
then Mostly
Clear
Saturday
High: 79 °F
Mostly Sunny
Saturday Night
Low: 55 °F
Mostly Cloudy
Sunday
High: 74 °F
Partly Sunny
Sunday Night
Low: 50 °F
Mostly Cloudy
Columbus Day
High: 73 °F
Sunny
Monday Night
Low: 48 °F
Slight Chance
Showers

Detailed Forecast

Tonight

Mostly cloudy, then gradually becoming clear, with a low around 53. South southwest wind 6 to 9 mph becoming northwest in the evening. Winds could gust as high as 16 mph.

Friday

Sunny, with a high near 81. West wind 6 to 11 mph becoming southeast in the morning. Winds could gust as high as 20 mph.

Friday Night

Mostly clear, with a low around 53. Breezy, with a west wind 6 to 15 mph, with gusts as high as 20 mph.

Saturday

Mostly sunny, with a high near 79. West wind 6 to 13 mph becoming south in the morning. Winds could gust as high as 22 mph.

Saturday Night

Mostly cloudy, with a low around 55. West wind 5 to 11 mph, with gusts as high as 16 mph.

Sunday

Partly sunny, with a high near 74.

Sunday Night

Mostly cloudy, with a low around 50.