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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

47°F

8°C

Humidity	49%
Wind Speed	E 7 mph
Barometer	30.45 in
Dewpoint	29°F (-2°C)
Visibility	10.00 mi
Wind Chill	44°F (7°C)
Last update	7 Oct 2:35 am MDT

More Information:

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

Extended Forecast for

Empire CO

Overnight
Low: 45 °F
Mostly Cloudy
Wednesday
High: 72 °F
Mostly Sunny
then Chance
Showers
Wednesday Night
Low: 45 °F
Chance
Showers then
Mostly Clear
Thursday
High: 71 °F
Sunny then
Slight Chance
Showers
Thursday Night
Low: 43 °F
Mostly Clear
Friday
High: 71 °F
Sunny
Friday Night
Low: 44 °F
Mostly Clear
Saturday
High: 67 °F
Mostly Sunny
Saturday Night
Low: 44 °F
Partly Cloudy

Detailed Forecast

Overnight

Mostly cloudy, with a low around 45. West wind around 5 mph becoming calm.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 72. Calm wind becoming east southeast 5 to 7 mph in the afternoon.

Wednesday Night

A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 45. West wind 5 to 7 mph.

Thursday

A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 71. West wind around 6 mph becoming north in the afternoon.

Thursday Night

Mostly clear, with a low around 43. West wind 3 to 7 mph.

Friday

Sunny, with a high near 71.

Friday Night

Mostly clear, with a low around 44.

Saturday

Mostly sunny, with a high near 67.