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

49°F

9°C

Humidity 59%
Wind Speed NW 7 mph
Barometer 29.97 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 16 May 10:35 pm MDT
Extended Forecast for

Grand Lake CO

  • Tonight

    Tonight: A 50 percent chance of showers. Mostly cloudy, with a low around 32. Southwest wind 3 to 5 mph.

    Low: 32 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 60. Southwest wind 3 to 7 mph. Chance of precipitation is 70%.

    High: 60 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 30. Southwest wind 5 to 7 mph becoming light and variable. Chance of precipitation is 90%.

    Low: 30 °F

    Showers

  • Monday

    Monday: Snow showers, possibly mixed with rain, becoming all snow after noon. Some thunder is also possible. High near 43. East wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Rain/Snow
    then Snow
    Showers

  • Monday Night

    Monday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 24. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 24 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

  • Tuesday

    Tuesday: A chance of snow showers before noon, then snow showers likely, possibly mixed with rain. Some thunder is also possible. Mostly cloudy, with a high near 48. Chance of precipitation is 60%.

    High: 48 °F

    Chance Snow
    Showers then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: A chance of rain and snow showers before 9pm, then a chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.

    Low: 23 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow showers after noon. Some thunder is also possible. Partly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of rain showers between 9pm and midnight. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers. Mostly cloudy, with a low around 32. Southwest wind 3 to 5 mph.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 60. Southwest wind 3 to 7 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm. Low around 30. Southwest wind 5 to 7 mph becoming light and variable. Chance of precipitation is 90%.
Monday
Snow showers, possibly mixed with rain, becoming all snow after noon. Some thunder is also possible. High near 43. East wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 24. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.
Tuesday
A chance of snow showers before noon, then snow showers likely, possibly mixed with rain. Some thunder is also possible. Mostly cloudy, with a high near 48. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow showers before 9pm, then a chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow showers after noon. Some thunder is also possible. Partly sunny, with a high near 53.
Wednesday Night
A slight chance of rain and snow showers before 9pm, then a slight chance of rain showers between 9pm and midnight. Mostly cloudy, with a low around 26.
Thursday
A chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 58.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 68.
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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 pm MDT May 16, 2026
Forecast Valid:
10pm MDT May 16, 2026-6pm MDT May 23, 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