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.

Partly Cloudy

49°F

9°C

Humidity 75%
Wind Speed Calm
Barometer 30.54 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 27 Aug 5:35 am MDT
Extended Forecast for

3 Miles W Arapahoe Peak CO

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 63. West northwest wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 63 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 45. North northwest wind around 8 mph becoming south southeast in the evening.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 64. Breezy, with a west wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 64 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47. Breezy, with a west wind 8 to 16 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. Breezy, with a west wind 9 to 14 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 36 mph.

    High: 63 °F

    Breezy.
    Mostly Cloudy
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 45. Breezy. Chance of precipitation is 40%.

    Low: 45 °F

    Chance
    T-storms and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Breezy.

    High: 59 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42. Breezy.

    Low: 42 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 63. West northwest wind 6 to 10 mph, with gusts as high as 16 mph.
Tonight
Partly cloudy, with a low around 45. North northwest wind around 8 mph becoming south southeast in the evening.
Friday
Partly sunny, with a high near 64. Breezy, with a west wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Friday Night
Mostly cloudy, with a low around 47. Breezy, with a west wind 8 to 16 mph, with gusts as high as 25 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. Breezy, with a west wind 9 to 14 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 36 mph.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 45. Breezy. Chance of precipitation is 40%.
Sunday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Breezy.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42. Breezy.
Monday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 40.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 58. Breezy.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Arapahoe Peak CO
 40.02°N 105.68°W (Elev. 11293 ft)
Last Update:
12:46 am MDT Aug 27, 2026
Forecast Valid:
5am MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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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