Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

57°F

14°C

Humidity 26%
Wind Speed NW 3 mph
Barometer 30.09 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 17 Jun 4:55 am MDT
Extended Forecast for

4 Miles WSW Grand Lake CO

Red Flag Warning June 17, 12:00pm until June 17, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  • Today

    Today: Sunny, with a high near 76. Breezy, with a west wind 15 to 22 mph, with gusts as high as 34 mph.

    High: 76 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 42. Breezy, with a west wind 16 to 21 mph becoming light and variable  after midnight. Winds could gust as high as 33 mph.

    Low: 42 °F

    Mostly Clear
    and Breezy
    then Clear

  • Thursday

    Thursday: Sunny, with a high near 76. Breezy, with a west wind 5 to 15 mph, with gusts as high as 24 mph.

    High: 76 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. West northwest wind 8 to 13 mph becoming light and variable  in the evening. Winds could gust as high as 22 mph.

    Low: 44 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 80. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 26 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Breezy.

    High: 78 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. Breezy.

    Low: 43 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Breezy.

    High: 73 °F

    Sunny and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 76. Breezy, with a west wind 15 to 22 mph, with gusts as high as 34 mph.
Tonight
Mostly clear, with a low around 42. Breezy, with a west wind 16 to 21 mph becoming light and variable after midnight. Winds could gust as high as 33 mph.
Thursday
Sunny, with a high near 76. Breezy, with a west wind 5 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 44. West northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.
Juneteenth
Sunny, with a high near 80. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 26 mph.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Sunny, with a high near 78. Breezy.
Saturday Night
Mostly clear, with a low around 43. Breezy.
Sunday
Sunny, with a high near 73. Breezy.
Sunday Night
Partly cloudy, with a low around 42.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 78.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Grand Lake CO
 40.23°N 105.9°W (Elev. 8947 ft)
12:46 am MDT Jun 17, 2026
5am MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
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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