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

62°F

17°C

Humidity 25%
Wind Speed W 3 mph
Barometer 30.11 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 17 Jun 7:35 am MDT
Extended Forecast for

4 Miles NNE Trail Ridge 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 62. Windy, with a west wind 29 to 33 mph, with gusts as high as 50 mph.

    High: 62 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 36. Windy, with a west wind 18 to 28 mph becoming west southwest 7 to 12 mph after midnight. Winds could gust as high as 41 mph.

    Low: 36 °F

    Mostly Clear
    and Windy
    then Clear

  • Thursday

    Thursday: Sunny, with a high near 61. Breezy, with a west wind 11 to 17 mph, with gusts as high as 28 mph.

    High: 61 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Breezy, with a west northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 62. West wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 61. Windy.

    High: 61 °F

    Slight Chance
    T-storms and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Breezy.

    Low: 33 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: A slight chance of snow showers after noon, mixing with rain after 3pm. Some thunder is also possible.  Sunny, with a high near 56. Breezy.

    High: 56 °F

    Breezy. Sunny
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 62. Windy, with a west wind 29 to 33 mph, with gusts as high as 50 mph.
Tonight
Mostly clear, with a low around 36. Windy, with a west wind 18 to 28 mph becoming west southwest 7 to 12 mph after midnight. Winds could gust as high as 41 mph.
Thursday
Sunny, with a high near 61. Breezy, with a west wind 11 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Mostly clear, with a low around 34. Breezy, with a west northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Juneteenth
Mostly sunny, with a high near 62. West wind 8 to 11 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 36.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61. Windy.
Saturday Night
Mostly clear, with a low around 33. Breezy.
Sunday
A slight chance of snow showers after noon, mixing with rain after 3pm. Some thunder is also possible. Sunny, with a high near 56. Breezy.
Sunday Night
A chance of rain and snow showers before 9pm, then a chance of rain showers between 9pm and midnight. Some thunder is also possible. Mostly cloudy, with a low around 31.
Monday
A chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 57.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 33.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 59.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Trail Ridge CO
 40.48°N 105.7°W (Elev. 12300 ft)
12:46 am MDT Jun 17, 2026
7am 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