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

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Mostly Cloudy

48°F

9°C

Humidity 95%
Wind Speed Calm
Barometer 30.49 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 18 Sep 6:55 am MDT
Extended Forecast for

Berthoud Pass CO

  • Today

    Today: A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 49. West northwest wind 6 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 70%.

    High: 49 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 36. West wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.

    Low: 36 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 45. West wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 45 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of rain showers, mixing with snow after 9pm, then gradually ending. Some thunder is also possible. Partly cloudy, with a low around 32. Southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Clear

  • Sunday

    Sunday: A slight chance of snow showers after noon, mixing with rain after 3pm. Some thunder is also possible. Mostly sunny, with a high near 43. Breezy, with a west wind 11 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 43 °F

    Sunny then
    Slight Chance
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

Today
A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 49. West northwest wind 6 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 70%.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 36. West wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 45. West wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Saturday Night
A slight chance of rain showers, mixing with snow after 9pm, then gradually ending. Some thunder is also possible. Partly cloudy, with a low around 32. Southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday
A slight chance of snow showers after noon, mixing with rain after 3pm. Some thunder is also possible. Mostly sunny, with a high near 43. Breezy, with a west wind 11 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 47.
Tuesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 34.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 45.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 35.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
Berthoud Pass CO
 39.79°N 105.77°W (Elev. 11749 ft)
Last Update:
12:46 am MDT Sep 18, 2026
Forecast Valid:
7am MDT Sep 18, 2026-6pm MDT Sep 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation