National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Copper Mountain - Red Cliff Pass (KCCU)

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

Fair

37°F

3°C

Humidity 70%
Wind Speed SW 9 mph
Barometer 30.54 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 19 Sep 8:55 pm MDT
Extended Forecast for

Keystone CO

  • Tonight

    Tonight: Mostly clear, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 24 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. West northwest wind around 6 mph becoming east southeast in the evening. Winds could gust as high as 18 mph.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.

    High: 67 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Light and variable wind.
Sunday
Sunny, with a high near 65. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 36. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 24 mph.
Monday
Sunny, with a high near 68. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Winds could gust as high as 22 mph.
Monday Night
Partly cloudy, with a low around 37. West northwest wind around 6 mph becoming east southeast in the evening. Winds could gust as high as 18 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70.
Tuesday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 40.
Wednesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 67.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Keystone CO
 39.6°N 105.95°W (Elev. 9396 ft)
Last Update:
12:46 pm MDT Sep 19, 2026
Forecast Valid:
11pm MDT Sep 19, 2026-6pm MDT Sep 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation