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.

Fair

45°F

7°C

Humidity 42%
Wind Speed Calm
Barometer 30.42 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 8 Oct 11:15 pm MDT
Extended Forecast for

Grand Lake CO

  • Tonight

    Tonight: Clear, with a low around 35. South wind 3 to 5 mph.

    Low: 35 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 68. Southwest wind 3 to 6 mph.

    High: 68 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. East southeast wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 62. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 50%.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Cloudy, with a low around 47. West southwest wind 3 to 5 mph.

    Low: 47 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 62. Chance of precipitation is 50%.

    High: 62 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of rain showers before noon, then a slight chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 55. Breezy.

    High: 55 °F

    Breezy.
    Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 35. South wind 3 to 5 mph.
Thursday
Increasing clouds, with a high near 68. Southwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 41. East southeast wind around 5 mph becoming calm in the evening.
Friday
A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 62. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 47. West southwest wind 3 to 5 mph.
Saturday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 62. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 42.
Sunday
A chance of rain showers before noon, then a slight chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 55. Breezy.
Sunday Night
Partly cloudy, with a low around 28.
Columbus Day
A slight chance of showers after noon. Mostly sunny, with a high near 59.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 32.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 60.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 31.
Wednesday
A slight chance of rain and snow showers. Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.82°W (Elev. 8386 ft)
Last Update:
1:30 pm MDT Oct 8, 2025
Forecast Valid:
11pm MDT Oct 8, 2025-6pm MDT Oct 15, 2025
 
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