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

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 >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

66°F

19°C

Humidity 19%
Wind Speed NW 6 mph
Barometer 30.11 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 16 Jun 10:35 pm MDT
Extended Forecast for

LONG'S PEAK CO

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

  • Tonight

    Tonight: Mostly clear, with a low around 41. Very windy, with a west wind 36 to 46 mph, with gusts as high as 70 mph.

    Low: 41 °F

    Mostly Clear
    and Very
    Windy

  • Wednesday

    Wednesday: Sunny, with a high near 55. Very windy, with a west wind 40 to 45 mph decreasing to 34 to 39 mph in the afternoon. Winds could gust as high as 70 mph.

    High: 55 °F

    Sunny and
    Very Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34. Very windy, with a west wind 29 to 39 mph becoming west 10 to 20 mph. Winds could gust as high as 55 mph.

    Low: 34 °F

    Mostly Clear
    and Very
    Windy then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 52. Breezy, with a southwest wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. Breezy, with an east northeast wind 8 to 13 mph becoming west 16 to 21 mph after midnight. Winds could gust as high as 25 mph.

    Low: 40 °F

    Mostly Clear
    and Breezy

  • Juneteenth

    Juneteenth: Sunny, with a high near 55. Breezy.

    High: 55 °F

    Sunny and
    Breezy

  • Friday Night

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

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54. Windy.

    High: 54 °F

    Windy. Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. Windy.

    Low: 38 °F

    Mostly Clear
    and Windy

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Very windy, with a west wind 36 to 46 mph, with gusts as high as 70 mph.
Wednesday
Sunny, with a high near 55. Very windy, with a west wind 40 to 45 mph decreasing to 34 to 39 mph in the afternoon. Winds could gust as high as 70 mph.
Wednesday Night
Mostly clear, with a low around 34. Very windy, with a west wind 29 to 39 mph becoming west 10 to 20 mph. Winds could gust as high as 55 mph.
Thursday
Sunny, with a high near 52. Breezy, with a southwest wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.
Thursday Night
Mostly clear, with a low around 40. Breezy, with an east northeast wind 8 to 13 mph becoming west 16 to 21 mph after midnight. Winds could gust as high as 25 mph.
Juneteenth
Sunny, with a high near 55. Breezy.
Friday Night
Partly cloudy, with a low around 42.
Saturday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 54. Windy.
Saturday Night
Mostly clear, with a low around 38. Windy.
Sunday
A slight chance of rain and snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 50. Breezy.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 35. Breezy.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 49.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 36.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
LONG'S PEAK CO
 40.27°N 105.62°W (Elev. 12999 ft)
Last Update:
12:46 pm MDT Jun 16, 2026
Forecast Valid:
10pm MDT Jun 16, 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