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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

87°F

31°C

Humidity	14%
Wind Speed	S 9 mph
Barometer	30.13 in (1013.5 mb)
Dewpoint	33°F (1°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	8 Oct 12:56 pm MDT

More Information:

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

Extended Forecast for

3 Miles NNE Horsetooth Mountain CO

This Afternoon
High: 84 °F
Mostly Sunny
Tonight
Low: 55 °F
Decreasing
Clouds
Friday
High: 84 °F
Sunny
Friday Night
Low: 55 °F
Mostly Clear
Saturday
High: 82 °F
Mostly Sunny
Saturday Night
Low: 57 °F
Mostly Cloudy
Sunday
High: 77 °F
Partly Sunny
Sunday Night
Low: 52 °F
Mostly Cloudy
Columbus Day
High: 76 °F
Sunny

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 84. Southeast wind around 9 mph becoming southwest. Winds could gust as high as 15 mph.

Tonight

Mostly cloudy, then gradually becoming clear, with a low around 55. South southwest wind 5 to 9 mph becoming west northwest in the evening. Winds could gust as high as 15 mph.

Friday

Sunny, with a high near 84. West wind 5 to 11 mph becoming east southeast in the morning. Winds could gust as high as 20 mph.

Friday Night

Mostly clear, with a low around 55. West wind 5 to 14 mph, with gusts as high as 18 mph.

Saturday

Mostly sunny, with a high near 82. West wind 5 to 13 mph becoming south in the morning. Winds could gust as high as 23 mph.

Saturday Night

Mostly cloudy, with a low around 57.

Sunday

Partly sunny, with a high near 77.

Sunday Night

Mostly cloudy, with a low around 52.