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.

Mostly Cloudy

77°F

25°C

Humidity 23%
Wind Speed SW 10 G 20 mph
Barometer 30.35 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 14 Aug 2:35 pm MDT
Extended Forecast for

3 Miles N Arapahoe Peak CO

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 55. West wind around 9 mph, with gusts as high as 16 mph. Chance of precipitation is 60%.

    High: 55 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 41. West wind around 8 mph. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 54. West wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 60%.

    High: 54 °F

    Slight Chance
    Showers then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 41. Southwest wind 5 to 8 mph, with gusts as high as 16 mph.

    Low: 41 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56. West wind 3 to 8 mph. Winds could gust as high as 17 mph.

    High: 56 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 41. Chance of precipitation is 30%.

    Low: 41 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. Breezy.

    High: 59 °F

    Partly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 55. West wind around 9 mph, with gusts as high as 16 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 41. West wind around 8 mph. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 54. West wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 41. Southwest wind 5 to 8 mph, with gusts as high as 16 mph.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56. West wind 3 to 8 mph. Winds could gust as high as 17 mph.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 41. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 59. Breezy.
Tuesday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43. Breezy.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 58. Breezy.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 42.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Arapahoe Peak CO
 40.06°N 105.66°W (Elev. 12014 ft)
Last Update:
12:46 pm MDT Aug 14, 2026
Forecast Valid:
3pm MDT Aug 14, 2026-6pm MDT Aug 20, 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