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

55°F

13°C

Humidity 31%
Wind Speed E 3 mph
Barometer 30.11 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 17 Jun 6:15 am MDT
Extended Forecast for

3 Miles SW 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

  • Today

    Today: Sunny, with a high near 60. Very windy, with a west wind 32 to 40 mph, with gusts as high as 60 mph.

    High: 60 °F

    Sunny and
    Very Windy

  • Tonight

    Tonight: Mostly clear, with a low around 37. Windy, with a west wind 21 to 31 mph decreasing to 9 to 19 mph after midnight. Winds could gust as high as 47 mph.

    Low: 37 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 59. Breezy, with a west wind 11 to 20 mph, with gusts as high as 31 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36. Breezy, with a west wind 8 to 17 mph, with gusts as high as 28 mph.

    Low: 36 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 55. Breezy, with a west wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 55 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 54. Very windy.

    High: 54 °F

    Sunny and
    Windy then
    Slight Chance
    T-storms and
    Very Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. Very windy.

    Low: 34 °F

    Mostly Clear
    and Very
    Windy

  • Sunday

    Sunday: A slight chance of rain and snow showers after noon. Some thunder is also possible. Sunny, with a high near 50. Windy.

    High: 50 °F

    Windy. Sunny
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 60. Very windy, with a west wind 32 to 40 mph, with gusts as high as 60 mph.
Tonight
Mostly clear, with a low around 37. Windy, with a west wind 21 to 31 mph decreasing to 9 to 19 mph after midnight. Winds could gust as high as 47 mph.
Thursday
Sunny, with a high near 59. Breezy, with a west wind 11 to 20 mph, with gusts as high as 31 mph.
Thursday Night
Mostly clear, with a low around 36. Breezy, with a west wind 8 to 17 mph, with gusts as high as 28 mph.
Juneteenth
Mostly sunny, with a high near 55. Breezy, with a west wind 11 to 15 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 38. Breezy.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 54. Very windy.
Saturday Night
Mostly clear, with a low around 34. Very windy.
Sunday
A slight chance of rain and snow showers after noon. Some thunder is also possible. Sunny, with a high near 50. Windy.
Sunday Night
A chance of rain and snow showers before midnight. Some thunder is also possible. Mostly cloudy, with a low around 33. Breezy.
Monday
A chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 50. Breezy.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 34. Breezy.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 52. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW LONG'S PEAK CO
 40.24°N 105.65°W (Elev. 12001 ft)
Last Update:
12:46 am MDT Jun 17, 2026
Forecast Valid:
6am 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