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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.

Fair

43°F

6°C

Humidity	49%
Wind Speed	SW 6 mph
Barometer	30.54 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	39°F (4°C)
Last update	9 Oct 8:15 am MDT

More Information:

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

Extended Forecast for

2 Miles SW Keystone CO

Today
High: 69 °F
Sunny then
Slight Chance
Showers
Tonight
Low: 35 °F
Slight Chance
Showers then
Mostly Clear
Saturday
High: 64 °F
Mostly Sunny
then Chance
Showers
Saturday Night
Low: 38 °F
Mostly Cloudy
Sunday
High: 64 °F
Mostly Cloudy
Sunday Night
Low: 40 °F
Chance
Showers
Columbus Day
High: 66 °F
Sunny
Monday Night
Low: 36 °F
Mostly Clear
Tuesday
High: 61 °F
Mostly Sunny
then Slight
Chance
Showers

Detailed Forecast

Today

A 20 percent chance of showers after noon. Sunny, with a high near 69. Light and variable wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.

Tonight

A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 35. West wind around 6 mph becoming south in the evening.

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 64. West southwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

Saturday Night

Mostly cloudy, with a low around 38. Southwest wind 5 to 7 mph.

Sunday

Mostly cloudy, with a high near 64. South southwest wind 5 to 9 mph, with gusts as high as 18 mph.

Sunday Night

A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 40.

Columbus Day

Sunny, with a high near 66.

Monday Night

Mostly clear, with a low around 36.

Tuesday

A slight chance of showers after noon. Mostly sunny, with a high near 61.