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

Granby-Grand County Airport (KGNB)

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

Fair

57°F

14°C

Humidity 44%
Wind Speed SW 3 mph
Barometer 30.38 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 4 Sep 9:35 am MDT
Extended Forecast for

2 Miles SSE Arapahoe Peak CO

  • Today

    Today: A chance of showers, with thunderstorms also possible after 3pm. Increasing clouds, with a high near 61. West wind 6 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 50%.

    High: 61 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 8pm. Partly cloudy, with a low around 45. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 16 mph.

    Low: 45 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Partly sunny, with a high near 59. West wind 5 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 59 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46. West wind 5 to 9 mph.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 59. West wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.

    High: 59 °F

    Partly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    T-storms then
    Mostly Cloudy
    and Breezy

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 60%.

    High: 57 °F

    Mostly Cloudy
    and Breezy
    then Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after 3pm. Increasing clouds, with a high near 61. West wind 6 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Tonight
A 40 percent chance of showers, mainly before 8pm. Partly cloudy, with a low around 45. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 16 mph.
Saturday
A 40 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Partly sunny, with a high near 59. West wind 5 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 46. West wind 5 to 9 mph.
Sunday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 59. West wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 20%.
Labor Day
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 60%.
Monday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Tuesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 57.
Tuesday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 44.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 59.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 45.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Arapahoe Peak CO
 40°N 105.62°W (Elev. 11716 ft)
Last Update:
12:46 am MDT Sep 4, 2026
Forecast Valid:
9am MDT Sep 4, 2026-6pm MDT Sep 10, 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