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

54°F

12°C

Humidity 69%
Wind Speed N 3 mph
Barometer 30.33 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 2 Sep 9:55 pm MDT
Extended Forecast for

Grand Lake CO

  • Tonight

    Tonight: Mostly clear, with a low around 39. South wind 3 to 6 mph.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 75. Light south wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75. Light west wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 39. South wind 3 to 6 mph.
Thursday
Sunny, with a high near 75. Light south wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Mostly clear, with a low around 41. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Friday
Sunny, with a high near 75. Light west wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Partly cloudy, with a low around 43. Southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 74.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 44.
Labor Day
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 73.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 71.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 41.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 70.
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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:
1:42 pm MDT Sep 2, 2026
Forecast Valid:
10pm MDT Sep 2, 2026-6pm MDT Sep 9, 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