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

55°F

13°C

Humidity 91%
Wind Speed W 5 mph
Barometer 30.47 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 14 Aug 11:55 pm MDT
Extended Forecast for

4 Miles SW LONG'S PEAK CO

  • Overnight

    Overnight: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 41. West wind around 8 mph.

    Low: 41 °F

    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 52. West southwest wind 7 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

    High: 52 °F

    Slight Chance
    Showers then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 41. Southwest wind 5 to 7 mph.

    Low: 41 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54. West wind around 7 mph, with gusts as high as 15 mph.

    High: 54 °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 40. West northwest wind 7 to 9 mph becoming north in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 30%.

    Low: 40 °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 55.

    High: 55 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. Breezy.

    Low: 42 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 56. Breezy.

    High: 56 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

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

    Low: 42 °F

    Chance
    T-storms and
    Breezy then
    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 41. West wind around 8 mph.
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 52. West southwest wind 7 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 41. Southwest wind 5 to 7 mph.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54. West wind around 7 mph, with gusts as high as 15 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 40. West northwest wind 7 to 9 mph becoming north in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 42. Breezy.
Tuesday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 56. Breezy.
Tuesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42. Breezy.
Wednesday
A slight chance of showers, then showers and thunderstorms likely after noon. Partly sunny, with a high near 55. Breezy.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 41.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 57. Breezy.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 42.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW LONG'S PEAK CO
 40.22°N 105.67°W (Elev. 12001 ft)
Last Update:
12:46 pm MDT Aug 14, 2026
Forecast Valid:
12am MDT Aug 15, 2026-6pm MDT Aug 21, 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