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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

34°F

1°C

Humidity	69%
Wind Speed	E 6 mph
Barometer	30.59 in
Dewpoint	24°F (-4°C)
Visibility	10.00 mi
Wind Chill	29°F (-2°C)
Last update	5 Oct 6:35 am MDT

More Information:

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

Extended Forecast for

2 Miles NW Downieville CO

Today
High: 71 °F
Sunny
Tonight
Low: 46 °F
Mostly Clear
Tuesday
High: 71 °F
Mostly Sunny
then Slight
Chance
Showers
Tuesday Night
Low: 44 °F
Partly Cloudy
Wednesday
High: 70 °F
Mostly Sunny
then Chance
Showers
Wednesday Night
Low: 44 °F
Partly Cloudy
Thursday
High: 68 °F
Sunny then
Slight Chance
Showers
Thursday Night
Low: 42 °F
Partly Cloudy
Friday
High: 67 °F
Sunny then
Slight Chance
Showers

Detailed Forecast

Today

Sunny, with a high near 71. Northwest wind 6 to 9 mph, with gusts as high as 15 mph.

Tonight

Mostly clear, with a low around 46. West northwest wind 5 to 9 mph, with gusts as high as 20 mph.

Tuesday

A 20 percent chance of showers after noon. Mostly sunny, with a high near 71. West northwest wind 5 to 7 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

Tuesday Night

Partly cloudy, with a low around 44. West wind 5 to 7 mph becoming light and variable after midnight.

Wednesday

A 30 percent chance of showers after noon. Mostly sunny, with a high near 70. Light and variable wind becoming southeast 5 to 7 mph in the morning.

Wednesday Night

Partly cloudy, with a low around 44.

Thursday

A 20 percent chance of showers after noon. Mostly sunny, with a high near 68.

Thursday Night

Partly cloudy, with a low around 42.

Friday

A slight chance of showers after noon. Sunny, with a high near 67.