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

41°F

5°C

Humidity 89%
Wind Speed Calm
Barometer 30.42 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 2 Sep 7:35 am MDT
Extended Forecast for

Grand Lake CO

  • Today

    Today: Mostly sunny, with a high near 70. Light south southwest wind becoming west southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. South southwest wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72. Light south wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 26 mph.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. West southwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 22 mph.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 70. Light south southwest wind becoming west southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Tonight
Partly cloudy, with a low around 43. South southwest wind 5 to 13 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 72. Light south wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
Mostly clear, with a low around 43. West southwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 22 mph.
Friday
Sunny, with a high near 75. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Partly cloudy, with a low around 45.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45.
Labor Day
A chance of showers and thunderstorms. Partly sunny, with a high near 71.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.23°N 105.82°W (Elev. 9199 ft)
Last Update:
3:41 am MDT Sep 2, 2026
Forecast Valid:
7am MDT Sep 2, 2026-6pm MDT Sep 8, 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