National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Overcast

33°F

1°C

Humidity 90%
Wind Speed Calm
Barometer 30.18 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 18 May 11:55 pm MDT
Extended Forecast for

8 Miles W Grand Lake CO

  • Overnight

    Overnight: A 40 percent chance of snow showers, mainly before 3am. Mostly cloudy, with a low around 23. West southwest wind 3 to 6 mph. Total nighttime snow accumulation of less than one inch possible.

    Low: 23 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of snow showers after noon. Some thunder is also possible. Partly sunny, with a high near 40. Calm wind becoming west southwest 5 to 7 mph in the afternoon. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: Snow showers likely, mainly before 9pm. Mostly cloudy, with a low around 26. North northwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Snow Showers
    Likely then
    Slight Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 45. Light and variable wind becoming west southwest 5 to 7 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. West northwest wind 5 to 7 mph becoming calm. Winds could gust as high as 16 mph.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny
    then Chance
    Snow Showers

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before 9pm, then a chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.

    Low: 28 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: A chance of snow showers before 3pm, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 49.

    High: 49 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow showers, mainly before 3am. Mostly cloudy, with a low around 23. West southwest wind 3 to 6 mph. Total nighttime snow accumulation of less than one inch possible.
Tuesday
A 40 percent chance of snow showers after noon. Some thunder is also possible. Partly sunny, with a high near 40. Calm wind becoming west southwest 5 to 7 mph in the afternoon. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow showers likely, mainly before 9pm. Mostly cloudy, with a low around 26. North northwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 45. Light and variable wind becoming west southwest 5 to 7 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Partly cloudy, with a low around 26. West northwest wind 5 to 7 mph becoming calm. Winds could gust as high as 16 mph.
Thursday
A 50 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 48.
Thursday Night
A chance of rain and snow showers before 9pm, then a chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.
Friday
A chance of snow showers before 3pm, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 29.
Saturday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 36.
Memorial Day
A slight chance of showers and thunderstorms. Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles W Grand Lake CO
 40.27°N 105.97°W (Elev. 10210 ft)
Last Update:
12:46 pm MDT May 18, 2026
Forecast Valid:
12am MDT May 19, 2026-6pm MDT May 25, 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