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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair and Windy

83°F

28°C

Humidity 12%
Wind Speed W 32 G 39 mph
Barometer 30.03 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Jun 1:55 pm MDT
Extended Forecast for

LONG'S PEAK CO

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

    NOW until 8:00pm Wed

    Red Flag Warning

  • This Afternoon

    High: 61 °F

    Sunny and
    Very Windy

  • Tonight

    Tonight: Mostly clear, with a low around 35. Windy, with a southwest wind 23 to 33 mph decreasing to 8 to 18 mph. Winds could gust as high as 50 mph.

    Low: 35 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 58. Breezy, with a west northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 58 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39. Breezy, with a west wind 8 to 16 mph, with gusts as high as 26 mph.

    Low: 39 °F

    Partly Cloudy
    and Breezy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 56. West wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 56 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 57. Very windy.

    High: 57 °F

    Sunny and
    Very Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. Very windy.

    Low: 37 °F

    Mostly Clear
    and Very
    Windy

Detailed Forecast

This Afternoon
Sunny, with a high near 61. Very windy, with a west wind 34 to 36 mph, with gusts as high as 55 mph.
Tonight
Mostly clear, with a low around 35. Windy, with a southwest wind 23 to 33 mph decreasing to 8 to 18 mph. Winds could gust as high as 50 mph.
Thursday
Sunny, with a high near 58. Breezy, with a west northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 39. Breezy, with a west wind 8 to 16 mph, with gusts as high as 26 mph.
Juneteenth
Mostly sunny, with a high near 56. West wind 9 to 14 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Sunny, with a high near 57. Very windy.
Saturday Night
Mostly clear, with a low around 37. Very windy.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 52. Windy.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 35.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 51.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 37.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
LONG'S PEAK CO
 40.24°N 105.62°W (Elev. 12064 ft)
Last Update:
12:46 pm MDT Jun 17, 2026
Forecast Valid:
2pm MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation