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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

80°F

27°C

Humidity	22%
Wind Speed	E 14 mph
Barometer	30.27 in (1019.8 mb)
Dewpoint	38°F (3°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	3 Oct 4:56 pm MDT

More Information:

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

Extended Forecast for

2 Miles NNW Fort Collins CO

Tonight
Low: 48 °F
Mostly Clear
Sunday
High: 81 °F
Sunny
Sunday Night
Low: 52 °F
Clear
Monday
High: 88 °F
Sunny
Monday Night
Low: 59 °F
Partly Cloudy
Tuesday
High: 87 °F
Mostly Sunny
Tuesday Night
Low: 55 °F
Partly Cloudy
Wednesday
High: 83 °F
Sunny
Wednesday Night
Low: 54 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 48. East northeast wind 8 to 13 mph becoming light north northeast in the evening. Winds could gust as high as 21 mph.

Sunday

Sunny, with a high near 81. Calm wind becoming southeast 5 to 7 mph in the afternoon.

Sunday Night

Clear, with a low around 52. Light and variable wind becoming north northwest around 6 mph.

Monday

Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.

Monday Night

Partly cloudy, with a low around 59. West northwest wind 5 to 10 mph, with gusts as high as 17 mph.

Tuesday

Mostly sunny, with a high near 87.

Tuesday Night

Partly cloudy, with a low around 55.