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

59°F

15°C

Humidity 57%
Wind Speed Calm
Barometer 30.42 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 6 Sep 9:35 am MDT
Extended Forecast for

Grand Lake CO

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 80. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. South southeast wind 5 to 7 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Cloudy

  • Labor Day

    Labor Day: Mostly cloudy, with a high near 73. Breezy, with a light south wind becoming west southwest 12 to 17 mph in the morning. Winds could gust as high as 28 mph.

    High: 73 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. West southwest wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Light west southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 28 mph.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 80. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 45. South southeast wind 5 to 7 mph becoming calm in the evening.
Labor Day
Mostly cloudy, with a high near 73. Breezy, with a light south wind becoming west southwest 12 to 17 mph in the morning. Winds could gust as high as 28 mph.
Monday Night
Partly cloudy, with a low around 42. West southwest wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 22 mph.
Tuesday
Mostly sunny, with a high near 74. Light west southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 41.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73.
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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 am MDT Sep 6, 2026
Forecast Valid:
10am MDT Sep 6, 2026-6pm MDT Sep 12, 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