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Denver's Monthly Weather Summary for September 2026

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Fair

52°F

11°C

Humidity	47%
Wind Speed	E 6 mph
Barometer	30.56 in
Dewpoint	33°F (1°C)
Visibility	10.00 mi
Wind Chill	50°F (10°C)
Last update	3 Oct 9:55 pm MDT

More Information:

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

Extended Forecast for

3 Miles WSW LONG'S PEAK CO

Tonight
Low: 32 °F
Mostly Clear
Sunday
High: 47 °F
Sunny
Sunday Night
Low: 34 °F
Mostly Clear
then Mostly
Clear and
Breezy
Monday
High: 47 °F
Sunny and
Breezy then
Sunny
Monday Night
Low: 36 °F
Partly Cloudy
and Breezy
Tuesday
High: 45 °F
Partly Sunny
and Breezy
then Chance
Snow Showers
Tuesday Night
Low: 34 °F
Partly Cloudy
Wednesday
High: 45 °F
Sunny
Wednesday Night
Low: 34 °F
Partly Cloudy
then Mostly
Clear and
Breezy

Detailed Forecast

Tonight

Mostly clear, with a low around 32. East southeast wind 8 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.

Sunday

Sunny, with a high near 47. West wind 8 to 11 mph, with gusts as high as 18 mph.

Sunday Night

Mostly clear, with a low around 34. Breezy, with a west northwest wind 7 to 15 mph becoming southwest in the evening. Winds could gust as high as 24 mph.

Monday

Sunny, with a high near 47. Breezy, with a west wind 8 to 18 mph, with gusts as high as 21 mph.

Monday Night

Partly cloudy, with a low around 36. Breezy, with a west wind 7 to 16 mph.

Tuesday

A 30 percent chance of snow showers after noon. Partly sunny, with a high near 45. Breezy.

Tuesday Night

Partly cloudy, with a low around 34.

Wednesday

Sunny, with a high near 45.

Wednesday Night

Mostly clear, with a low around 34. Breezy.