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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	13%
Wind Speed	S 9 mph
Barometer	29.93 in (1006.2 mb)
Dewpoint	31°F (-1°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	9 Oct 1:56 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

This Afternoon
High: 81 °F
Sunny
Tonight
Low: 59 °F
Decreasing
Clouds
Saturday
High: 79 °F
Increasing
Clouds
Saturday Night
Low: 60 °F
Increasing
Clouds
Sunday
High: 75 °F
Mostly Cloudy
Sunday Night
Low: 51 °F
Partly Cloudy
Columbus Day
High: 72 °F
Sunny
Monday Night
Low: 47 °F
Slight Chance
Showers
Tuesday
High: 64 °F
Chance
Showers

Detailed Forecast

This Afternoon

Sunny, with a high near 81. South southwest wind 8 to 10 mph, with gusts as high as 16 mph.

Tonight

Mostly cloudy, then gradually becoming clear, with a low around 59. West wind 6 to 11 mph becoming light and variable. Winds could gust as high as 17 mph.

Saturday

Increasing clouds, with a high near 79. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.

Saturday Night

Increasing clouds, with a low around 60. West wind 5 to 11 mph, with gusts as high as 15 mph.

Sunday

Mostly cloudy, with a high near 75. West northwest wind 5 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.

Sunday Night

Partly cloudy, with a low around 51.

Columbus Day

Sunny, with a high near 72.

Monday Night

A slight chance of showers. Partly cloudy, with a low around 47.