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.

Thunderstorm in Vicinity

63°F

17°C

Humidity 73%
Wind Speed NW 3 mph
Barometer 30.27 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 12 Aug 5:15 pm MDT
Extended Forecast for

2 Miles WSW Arapahoe Peak CO

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Steady temperature around 57. West southwest wind around 8 mph. Chance of precipitation is 80%.

    High: 57 °F

    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 44. West wind 5 to 8 mph. Chance of precipitation is 70%.

    Low: 44 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly after noon. High near 60. West wind 5 to 7 mph becoming south southwest in the afternoon. Chance of precipitation is 80%.

    High: 60 °F

    Chance
    Showers then
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 42. West wind around 7 mph. Chance of precipitation is 70%.

    Low: 42 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then showers and possibly a thunderstorm after noon. High near 58. West wind 6 to 8 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 90%.

    High: 58 °F

    Slight Chance
    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.

    Low: 41 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 9am, then a slight chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Slight Chance
    T-storms then
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Showers then
    T-storms

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Steady temperature around 57. West southwest wind around 8 mph. Chance of precipitation is 80%.
Tonight
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 44. West wind 5 to 8 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm, mainly after noon. High near 60. West wind 5 to 7 mph becoming south southwest in the afternoon. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 42. West wind around 7 mph. Chance of precipitation is 70%.
Friday
A slight chance of showers, then showers and possibly a thunderstorm after noon. High near 58. West wind 6 to 8 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.
Saturday
A slight chance of showers before 9am, then a slight chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 57. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40.
Sunday
A slight chance of showers, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 57.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 59.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 41.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 61. Breezy.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Arapahoe Peak CO
 40.02°N 105.68°W (Elev. 11293 ft)
Last Update:
12:46 pm MDT Aug 12, 2026
Forecast Valid:
5pm MDT Aug 12, 2026-6pm MDT Aug 19, 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