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.

Fog/Mist

48°F

9°C

Humidity 97%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 47°F (8°C)
Visibility 1.00 mi
Last update 23 Aug 6:55 am MDT
Extended Forecast for

Arapahoe Peak CO

  • Today

    Today: 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 56. Breezy, with a west wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.

    High: 56 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 43. Breezy, with a west wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 56. Breezy, with a west wind 8 to 15 mph, with gusts as high as 24 mph.

    High: 56 °F

    Mostly Sunny
    and Breezy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. West wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    Low: 41 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 54. West wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 54 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

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

    Low: 40 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
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 56. Breezy, with a west wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 43. Breezy, with a west wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 56. Breezy, with a west wind 8 to 15 mph, with gusts as high as 24 mph.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. West wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 54. West wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 40. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 55. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41.
Thursday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 55. Breezy.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41. Breezy.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 56. Breezy.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 42. Breezy.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 56. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe Peak CO
 40.02°N 105.65°W (Elev. 12680 ft)
Last Update:
2:19 am MDT Aug 23, 2026
Forecast Valid:
7am MDT Aug 23, 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