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

75°F

24°C

Humidity 13%
Wind Speed W 14 G 23 mph
Barometer 30.39 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 12 May 2:35 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 75. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon. Sunny, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 79 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 38. West southwest wind 3 to 7 mph.

    Low: 38 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71. Breezy, with a light west southwest wind becoming west 12 to 17 mph in the morning. Winds could gust as high as 32 mph.

    High: 71 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Clear, with a low around 31. Blustery.

    Low: 31 °F

    Clear and
    Blustery then
    Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 75. West northwest wind 9 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 34. Northwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers after noon. Sunny, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 38. West southwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 71. Breezy, with a light west southwest wind becoming west 12 to 17 mph in the morning. Winds could gust as high as 32 mph.
Thursday Night
Clear, with a low around 31. Blustery.
Friday
Sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 34.
Saturday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73.
Saturday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 34.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 66. Breezy.
Sunday Night
A chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 30.
Monday
A chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.85°W (Elev. 8599 ft)
Last Update:
12:47 pm MDT May 12, 2026
Forecast Valid:
3pm MDT May 12, 2026-6pm MDT May 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation