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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

37°F

3°C

Humidity	81%
Wind Speed	E 5 mph
Barometer	30.49 in
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Wind Chill	33°F (1°C)
Last update	3 Oct 5:15 am MDT

More Information:

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

Extended Forecast for

Empire CO

Today
High: 72 °F
Becoming
Sunny
Tonight
Low: 41 °F
Partly Cloudy
Sunday
High: 72 °F
Sunny
Sunday Night
Low: 45 °F
Mostly Clear
Monday
High: 72 °F
Sunny
Monday Night
Low: 46 °F
Partly Cloudy
Tuesday
High: 70 °F
Mostly Sunny
then Chance
Showers
Tuesday Night
Low: 44 °F
Partly Cloudy
Wednesday
High: 70 °F
Sunny then
Slight Chance
Showers

Detailed Forecast

Today

Partly sunny, then gradually becoming sunny, with a high near 72. West wind around 9 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

Tonight

Partly cloudy, with a low around 41. East wind 5 to 9 mph becoming calm. Winds could gust as high as 15 mph.

Sunday

Sunny, with a high near 72. West southwest wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

Sunday Night

Mostly clear, with a low around 45. Light and variable wind becoming west 5 to 9 mph in the evening. Winds could gust as high as 17 mph.

Monday

Sunny, with a high near 72. Northwest wind 6 to 10 mph, with gusts as high as 17 mph.

Monday Night

Partly cloudy, with a low around 46.

Tuesday

A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 70.