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 Calm
Barometer 30.10 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 17 Jun 5:15 am MDT
Extended Forecast for

6 Miles ESE 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 65. Windy, with a west wind around 29 mph, with gusts as high as 44 mph.

    High: 65 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 40. Windy, with a west wind 21 to 26 mph becoming west southwest 8 to 13 mph after midnight. Winds could gust as high as 40 mph.

    Low: 40 °F

    Mostly Clear
    and Windy
    then Clear

  • Thursday

    Thursday: Sunny, with a high near 63. Breezy, with a west wind 8 to 17 mph, with gusts as high as 28 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. Breezy, with a west northwest wind 7 to 16 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 64. West wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62. Windy.

    High: 62 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. Windy.

    Low: 39 °F

    Partly Cloudy
    and Windy
    then Mostly
    Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon.  Sunny, with a high near 57. Breezy.

    High: 57 °F

    Breezy. Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 65. Windy, with a west wind around 29 mph, with gusts as high as 44 mph.
Tonight
Mostly clear, with a low around 40. Windy, with a west wind 21 to 26 mph becoming west southwest 8 to 13 mph after midnight. Winds could gust as high as 40 mph.
Thursday
Sunny, with a high near 63. Breezy, with a west wind 8 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Mostly clear, with a low around 41. Breezy, with a west northwest wind 7 to 16 mph, with gusts as high as 25 mph.
Juneteenth
Mostly sunny, with a high near 64. West wind 7 to 14 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Sunny, with a high near 62. Windy.
Saturday Night
Mostly clear, with a low around 39. Windy.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 57. Breezy.
Sunday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 38. Breezy.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 58.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 39.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 61.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Grand Lake CO
 40.21°N 105.73°W (Elev. 11001 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