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 Breezy

80°F

27°C

Humidity 13%
Wind Speed W 24 G 32 mph
Barometer 30.06 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Jun 12:55 pm MDT
Extended Forecast for

5 Miles NW 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: 63 °F

    Sunny and
    Very Windy

  • Tonight

    Tonight: Mostly clear, with a low around 37. Windy, with a southwest wind 23 to 33 mph decreasing to 9 to 19 mph. Winds could gust as high as 50 mph.

    Low: 37 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 61. Breezy, with a west wind 10 to 20 mph, with gusts as high as 31 mph.

    High: 61 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. Breezy, with a west wind 8 to 16 mph, with gusts as high as 26 mph.

    Low: 41 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 62. West wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

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

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62. Very windy.

    High: 62 °F

    Sunny and
    Very Windy

  • Saturday Night

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

    Low: 39 °F

    Mostly Clear
    and Windy

Detailed Forecast

This Afternoon
Sunny, with a high near 63. Very windy, with a west wind 33 to 36 mph, with gusts as high as 55 mph.
Tonight
Mostly clear, with a low around 37. Windy, with a southwest wind 23 to 33 mph decreasing to 9 to 19 mph. Winds could gust as high as 50 mph.
Thursday
Sunny, with a high near 61. Breezy, with a west wind 10 to 20 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 41. Breezy, with a west wind 8 to 16 mph, with gusts as high as 26 mph.
Juneteenth
Mostly sunny, with a high near 62. West wind 9 to 13 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 62. Very 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. Mostly cloudy, with a low around 37.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 57.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 39.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW LONG'S PEAK CO
 40.31°N 105.68°W (Elev. 12136 ft)
Last Update:
12:46 pm MDT Jun 17, 2026
Forecast Valid:
1pm MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation