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.

Overcast

75°F

24°C

Humidity 31%
Wind Speed NW 8 mph
Barometer 30.47 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 22 Aug 5:15 pm MDT
Extended Forecast for

3 Miles NE Arapahoe Peak CO

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Mostly cloudy, with a steady temperature around 57. Southwest wind around 9 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 46. Breezy, with a west southwest wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 46 °F

    Chance
    T-storms then
    Slight Chance
    Showers and
    Breezy

  • 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. Mostly sunny, with a high near 68. Breezy, with a west wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

    High: 68 °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 47. Breezy, with a west wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    T-storms then
    Partly Cloudy
    and Breezy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 68. Breezy, with a west wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 68 °F

    Mostly Sunny
    and Breezy
    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 44. Chance of precipitation is 40%.

    Low: 44 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

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

    Low: 43 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Mostly cloudy, with a steady temperature around 57. Southwest wind around 9 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 46. Breezy, with a west southwest wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
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. Mostly sunny, with a high near 68. Breezy, with a west wind 15 to 20 mph, with gusts as high as 32 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 47. Breezy, with a west wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 68. Breezy, with a west wind 6 to 15 mph, with gusts as high as 24 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 44. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66.
Wednesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 68.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 44. Breezy.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 68. Breezy.
Friday Night
Partly cloudy, with a low around 45. Breezy.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 69. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Arapahoe Peak CO
 40.05°N 105.6°W (Elev. 10820 ft)
Last Update:
12:46 pm MDT Aug 22, 2026
Forecast Valid:
5pm 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