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.

Light Drizzle

56°F

13°C

Humidity 87%
Wind Speed N 6 mph
Barometer 30.33 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 13 Aug 10:35 am MDT
Extended Forecast for

Grand Lake CO

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Steady temperature around 71. South southwest wind 3 to 7 mph. Chance of precipitation is 80%.

    High: 71 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 45. South southwest wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 75. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 50%.

    High: 75 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 44. West wind around 6 mph becoming calm after midnight. Chance of precipitation is 70%.

    Low: 44 °F

    Showers
    Likely then
    Mostly Cloudy

  • Saturday

    Saturday: Showers and thunderstorms likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 74. West wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 74 °F

    Partly Sunny
    then T-storms
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Steady temperature around 71. South southwest wind 3 to 7 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 45. South southwest wind 3 to 5 mph. Chance of precipitation is 60%.
Friday
A slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 75. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 50%.
Friday Night
Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 44. West wind around 6 mph becoming calm after midnight. Chance of precipitation is 70%.
Saturday
Showers and thunderstorms likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 74. West wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 40.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 39.
Monday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 41.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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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 Aug 13, 2026
Forecast Valid:
11am MDT Aug 13, 2026-6pm MDT Aug 19, 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