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.

Light Drizzle

56°F

13°C

Humidity 91%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 22 Aug 11:15 pm MDT
Extended Forecast for

3 Miles SSW Arapahoe Peak CO

  • Tonight

    Tonight: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 44. West wind 9 to 14 mph, with gusts as high as 21 mph.

    Low: 44 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 58. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.

    High: 58 °F

    Breezy.
    Mostly 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. Partly cloudy, with a low around 44. Breezy, with a west wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 58. West wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 58 °F

    Mostly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 42. West wind around 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%.

    Low: 42 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

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

    Low: 42 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 44. West wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 58. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 31 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. Partly cloudy, with a low around 44. Breezy, with a west wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 58. West wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 42. West wind around 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. Chance of precipitation is 60%.
Tuesday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 41.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58.
Wednesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 59. Breezy.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 43.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 60. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Arapahoe Peak CO
 40°N 105.68°W (Elev. 12198 ft)
Last Update:
12:46 pm MDT Aug 22, 2026
Forecast Valid:
11pm MDT Aug 22, 2026-6pm MDT Aug 29, 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