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Denver's Monthly Weather Summary for September 2026

Current conditions at

Copper Mountain - Red Cliff Pass (KCCU)

Lat: 39.48°NLon: 106.15°WElev: 12028ft.

Light Snow

23°F

-5°C

Humidity	93%
Wind Speed	NW 9 G 23 mph
Barometer	30.56 in
Dewpoint	21°F (-6°C)
Visibility	0.50 mi
Wind Chill	13°F (-11°C)
Last update	15 Oct 10:35 am MDT

More Information:

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

Extended Forecast for

Keystone CO

Today
High: 45 °F
Chance Snow
Showers
Tonight
Low: 17 °F
Mostly Clear
Friday
High: 56 °F
Sunny
Friday Night
Low: 26 °F
Clear
Saturday
High: 65 °F
Sunny
Saturday Night
Low: 28 °F
Mostly Clear
Sunday
High: 62 °F
Mostly Sunny
Sunday Night
Low: 28 °F
Partly Cloudy
Monday
High: 60 °F
Mostly Sunny

Detailed Forecast

Today

A 30 percent chance of snow showers, mainly before noon. Cloudy early, then gradual clearing, with a high near 45. Northwest wind 7 to 9 mph becoming north northeast in the afternoon. Winds could gust as high as 15 mph. Total daytime snow accumulation of less than a half inch possible.

Tonight

Mostly clear, with a low around 17. North northwest wind around 6 mph becoming light and variable after midnight.

Friday

Sunny, with a high near 56. Calm wind becoming west southwest around 5 mph in the afternoon.

Friday Night

Clear, with a low around 26. Light and variable wind becoming south southeast around 5 mph in the evening.

Saturday

Sunny, with a high near 65. West northwest wind 3 to 5 mph.

Saturday Night

Mostly clear, with a low around 28.

Sunday

Mostly sunny, with a high near 62.