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

77°F

25°C

Humidity 19%
Wind Speed N 15 mph
Barometer 30.46 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 26 Aug 4:35 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 73. North northwest wind around 9 mph, with gusts as high as 16 mph.

    High: 73 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 42. North wind 5 to 8 mph becoming calm after midnight.

    Low: 42 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 80. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 80 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44. Northwest wind around 5 mph becoming calm in the evening.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 25 mph.

    High: 80 °F

    Mostly Sunny

  • Friday Night

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

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. Breezy.

    High: 78 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 72. Breezy.

    High: 72 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 73. North northwest wind around 9 mph, with gusts as high as 16 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 42. North wind 5 to 8 mph becoming calm after midnight.
Thursday
A 20 percent chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 80. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 44. Northwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 80. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. Breezy.
Saturday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42.
Sunday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 72. Breezy.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 39.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 73.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.85°W (Elev. 8599 ft)
Last Update:
2:25 pm MDT Aug 26, 2026
Forecast Valid:
5pm MDT Aug 26, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

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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