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

79°F

26°C

Humidity 21%
Wind Speed NE 13 mph
Barometer 30.52 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 31 Jul 2:15 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Northwest wind around 7 mph.

    High: 80 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 41. North northeast wind around 6 mph becoming calm after midnight.

    Low: 41 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.

    High: 82 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46. East northeast wind around 6 mph becoming calm after midnight.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Northwest wind around 7 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 41. North northeast wind around 6 mph becoming calm after midnight.
Saturday
Increasing clouds, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 46. East northeast wind around 6 mph becoming calm after midnight.
Sunday
Sunny, with a high near 88. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 87.
Monday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Sunny, with a high near 84. Breezy.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.82°W (Elev. 8386 ft)
Last Update:
12:46 pm MDT Jul 31, 2026
Forecast Valid:
2pm MDT Jul 31, 2026-6pm MDT Aug 6, 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