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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

41°F

5°C

Humidity	64%
Wind Speed	Calm
Barometer	30.39 in
Dewpoint	30°F (-1°C)
Visibility	10.00 mi
Last update	9 Oct 1:55 am MDT

More Information:

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

Extended Forecast for

5 Miles W Berthoud Falls CO

Overnight
Low: 36 °F
Mostly Clear
Friday
High: 59 °F
Sunny then
Slight Chance
Showers
Friday Night
Low: 35 °F
Slight Chance
Showers then
Mostly Clear
Saturday
High: 56 °F
Sunny then
Chance
Showers
Saturday Night
Low: 37 °F
Mostly Cloudy
Sunday
High: 56 °F
Mostly Cloudy
Sunday Night
Low: 38 °F
Chance
Showers and
Breezy
Columbus Day
High: 58 °F
Sunny and
Breezy
Monday Night
Low: 35 °F
Mostly Clear

Detailed Forecast

Overnight

Mostly clear, with a low around 36. Southwest wind around 7 mph.

Friday

A 20 percent chance of showers after noon. Increasing clouds, with a high near 59. West wind 7 to 11 mph, with gusts as high as 18 mph.

Friday Night

A 20 percent chance of showers before 9pm. Mostly cloudy, then gradually becoming clear, with a low around 35. West southwest wind 9 to 13 mph, with gusts as high as 23 mph.

Saturday

A slight chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 56. West southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

Saturday Night

Mostly cloudy, with a low around 37. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.

Sunday

Mostly cloudy, with a high near 56.

Sunday Night

A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 38. Breezy.

Columbus Day

Sunny, with a high near 58. Breezy.

Monday Night

Mostly clear, with a low around 35.

Tuesday

A chance of snow showers after noon, mixing with rain after 3pm. Mostly sunny, with a high near 53. Breezy.