Heavy Rainfall Along the Central Gulf Coast; Thunderstorms from the Plains to the Central Appalachians; Heat Across the East

A system in the Gulf could produce heavy rainfall and flash flooding for portions of the north-central Gulf Coast into Saturday. Widespread showers and thunderstorms are likely this afternoon into Friday from Central Plains into the mid-Mississippi Valley, Ohio Valley and Central Appalachians. Dangerous heat is expected from the Lower Mississippi Valley to the Mid-Atlantic today. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Mostly Cloudy

75°F

24°C

Humidity 25%
Wind Speed W 13 mph
Barometer 30.32 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 17 Jul 4:55 pm MDT
Extended Forecast for

Grand Lake CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a steady temperature around 74. West wind around 6 mph.

    High: 74 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Mostly cloudy, with a low around 43. West wind around 6 mph becoming light and variable  after midnight.

    Low: 43 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm.  Partly sunny, with a high near 77. Light and variable wind becoming west northwest 5 to 8 mph in the morning.  Chance of precipitation is 60%.

    High: 77 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm.  Partly cloudy, with a low around 43. East wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 43 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Showers and thunderstorms likely after noon.  Partly sunny, with a high near 78. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%.

    High: 78 °F

    Mostly Sunny
    then T-storms
    Likely

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Partly cloudy, with a low around 43. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 78.

    High: 78 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 79.

    High: 79 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 74. West wind around 6 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 43. West wind around 6 mph becoming light and variable after midnight.
Friday
A chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 77. Light and variable wind becoming west northwest 5 to 8 mph in the morning. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 43. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 78. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. Chance of precipitation is 20%.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 42.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 45.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 44.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Lake CO
 40.25°N 105.82°W (Elev. 8386 ft)
2:07 pm MDT Jul 17, 2025
5pm MDT Jul 17, 2025-6pm MDT Jul 24, 2025
 
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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