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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

40°F

4°C

Humidity	61%
Wind Speed	E 5 mph
Barometer	30.49 in
Dewpoint	27°F (-3°C)
Visibility	10.00 mi
Wind Chill	36°F (2°C)
Last update	7 Oct 6:15 am MDT

More Information:

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

Extended Forecast for

5 Miles SSW Trail Ridge CO

Today
High: 58 °F
Sunny then
Chance
Showers
Tonight
Low: 35 °F
Slight Chance
Showers then
Mostly Clear
Thursday
High: 56 °F
Increasing
Clouds
Thursday Night
Low: 35 °F
Decreasing
Clouds
Friday
High: 56 °F
Sunny
Friday Night
Low: 35 °F
Mostly Clear
Saturday
High: 52 °F
Sunny then
Mostly Sunny
and Breezy
Saturday Night
Low: 35 °F
Partly Cloudy
Sunday
High: 49 °F
Partly Sunny
then Chance
Showers

Detailed Forecast

Today

A 30 percent chance of showers, mainly after 3pm. Mostly sunny, with a high near 58. Calm wind becoming south southwest around 6 mph in the afternoon.

Tonight

A 20 percent chance of showers before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 35. South wind around 5 mph becoming calm in the evening.

Thursday

Increasing clouds, with a high near 56. Calm wind becoming west 5 to 7 mph in the afternoon.

Thursday Night

Mostly cloudy, then gradually becoming clear, with a low around 35. Light west wind.

Friday

Sunny, with a high near 56. Light west wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 23 mph.

Friday Night

Mostly clear, with a low around 35.

Saturday

Mostly sunny, with a high near 52. Breezy.

Saturday Night

Partly cloudy, with a low around 35.