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

65°F

18°C

Humidity 36%
Wind Speed Calm
Barometer 30.37 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 4 Sep 10:35 am MDT
Extended Forecast for

Grand Lake CO

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 76. Southwest wind 5 to 9 mph, with gusts as high as 15 mph.

    High: 76 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers before 7pm. Partly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 46 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 75. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. Northwest wind around 6 mph becoming calm after midnight.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

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

    Low: 46 °F

    Mostly Cloudy

  • Labor Day

    Labor Day: A 40 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 70. Breezy.

    High: 70 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 76. Southwest wind 5 to 9 mph, with gusts as high as 15 mph.
Tonight
A 20 percent chance of showers before 7pm. Partly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 75. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 45. Northwest wind around 6 mph becoming calm after midnight.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.
Sunday Night
Mostly cloudy, with a low around 46.
Labor Day
A 40 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 70. Breezy.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 44.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.23°N 105.85°W (Elev. 8369 ft)
Last Update:
12:46 am MDT Sep 4, 2026
Forecast Valid:
10am MDT Sep 4, 2026-6pm MDT Sep 10, 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