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.

Mostly Cloudy

62°F

17°C

Humidity 40%
Wind Speed NW 5 mph
Barometer 30.43 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 9 Aug 11:55 pm MDT
Extended Forecast for

Grand Lake CO

  • Overnight

    Overnight: Areas of smoke. Mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Areas Smoke

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 46. North northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 81. Calm wind becoming west northwest around 6 mph in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.

    High: 81 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 47. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 47 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after noon. High near 79. Chance of precipitation is 80%.

    High: 79 °F

    Partly Sunny
    then T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers then
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Showers

Detailed Forecast

Overnight
Areas of smoke. Mostly cloudy, with a low around 47. Calm wind.
Monday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Calm wind becoming west 5 to 8 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 46. North northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 81. Calm wind becoming west northwest around 6 mph in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 47. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
Showers and possibly a thunderstorm after noon. High near 79. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Thursday
A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 73.
Thursday Night
Showers and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40.
Friday
Showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 71.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 40.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 73.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 39.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 74.
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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 pm MDT Aug 9, 2026
Forecast Valid:
12am MDT Aug 10, 2026-6pm MDT Aug 16, 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