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.

Partly Cloudy

76°F

24°C

Humidity 27%
Wind Speed NE 3 mph
Barometer 30.47 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 8 Jul 12:15 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 76 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 45 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Increasing clouds, with a high near 75. Light and variable wind becoming north northwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 75 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Breezy.

    High: 86 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Thursday
A 40 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Increasing clouds, with a high near 75. Light and variable wind becoming north northwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Mostly clear, with a low around 43. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Sunny, with a high near 86. Breezy.
Sunday Night
Mostly clear, with a low around 46. Breezy.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 48.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.23°N 105.85°W (Elev. 8369 ft)
Last Update:
12:46 am MDT Jul 8, 2026
Forecast Valid:
12pm MDT Jul 8, 2026-6pm MDT Jul 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation