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 Rain

40°F

4°C

Humidity 86%
Wind Speed S 5 mph
Barometer 29.99 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 18 May 5:15 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: Snow showers. Some thunder is also possible. High near 40. Southwest wind around 5 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.

    High: 40 °F

    Snow Showers

  • Tonight

    Tonight: Snow showers, mainly before midnight. Low around 24. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow Showers
    then Chance
    Snow Showers

  • Tuesday

    Tuesday: A chance of rain and snow showers after noon. Some thunder is also possible. Increasing clouds, with a high near 48. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 48 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain likely, possibly mixed with snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 26. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Wednesday

    Wednesday: A slight chance of snow showers before 9am, then a slight chance of rain and snow showers between 9am and noon, then rain showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 53. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%.

    High: 53 °F

    Slight Chance
    Rain/Snow
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A slight chance of rain showers, mixing with snow after 9pm, then gradually ending. Some thunder is also possible. Partly cloudy, with a low around 26. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Rain showers likely before 9pm, then rain and snow showers likely between 9pm and 3am, then a chance of snow showers after 3am. Some thunder is also possible. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Rain/Snow
    Likely

  • Friday

    Friday: A slight chance of snow showers before 9am, then a chance of rain and snow showers between 9am and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Partly sunny, with a high near 57.

    High: 57 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Snow showers. Some thunder is also possible. High near 40. Southwest wind around 5 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow showers, mainly before midnight. Low around 24. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Tuesday
A chance of rain and snow showers after noon. Some thunder is also possible. Increasing clouds, with a high near 48. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday Night
Rain likely, possibly mixed with snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 26. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday
A slight chance of snow showers before 9am, then a slight chance of rain and snow showers between 9am and noon, then rain showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 53. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%.
Wednesday Night
A slight chance of rain showers, mixing with snow after 9pm, then gradually ending. Some thunder is also possible. Partly cloudy, with a low around 26. Chance of precipitation is 20%.
Thursday
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 57. Chance of precipitation is 60%.
Thursday Night
Rain showers likely before 9pm, then rain and snow showers likely between 9pm and 3am, then a chance of snow showers after 3am. Some thunder is also possible. Mostly cloudy, with a low around 28.
Friday
A slight chance of snow showers before 9am, then a chance of rain and snow showers between 9am and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Partly sunny, with a high near 57.
Friday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 28.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 33.
Memorial Day
A slight chance of showers and thunderstorms. Sunny, with a high near 72.
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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 18, 2026
Forecast Valid:
5pm MDT May 18, 2026-6pm MDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation