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

57°F

14°C

Humidity 64%
Wind Speed S 5 mph
Barometer 30.27 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 14 Sep 8:35 pm MDT
Extended Forecast for

Grand Lake CO

  • Tonight

    Tonight: A 50 percent chance of showers. Mostly cloudy, with a low around 38. West southwest wind 5 to 8 mph becoming light and variable in the evening.

    Low: 38 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 68. Light and variable wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. West southwest wind 3 to 8 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 70 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.

    Low: 37 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 68.

    High: 68 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 33.

    Low: 33 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers. Mostly cloudy, with a low around 38. West southwest wind 5 to 8 mph becoming light and variable in the evening.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 68. Light and variable wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. West southwest wind 3 to 8 mph. Chance of precipitation is 30%.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Friday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 68.
Friday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 33.
Saturday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 31.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 67.
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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:
12:46 pm MDT Sep 14, 2026
Forecast Valid:
8pm MDT Sep 14, 2026-6pm MDT Sep 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