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

61°F

16°C

Humidity 23%
Wind Speed W 7 mph
Barometer 30.13 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 17 Jun 1:35 am MDT
Extended Forecast for

2 Miles NNE Arapahoe Peak CO

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

  • Overnight

    Overnight: Mostly clear, with a low around 42. Very windy, with a west wind 33 to 39 mph, with gusts as high as 60 mph.

    Low: 42 °F

    Mostly Clear
    and Very
    Windy

  • Wednesday

    Wednesday: Sunny, with a high near 64. Very windy, with a west wind 30 to 39 mph, with gusts as high as 60 mph.

    High: 64 °F

    Sunny and
    Very Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38. Windy, with a west wind 19 to 29 mph becoming west southwest 7 to 12 mph. Winds could gust as high as 44 mph.

    Low: 38 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 63. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39. Breezy, with a west wind 7 to 16 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • 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 61. Windy.

    High: 61 °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

Overnight
Mostly clear, with a low around 42. Very windy, with a west wind 33 to 39 mph, with gusts as high as 60 mph.
Wednesday
Sunny, with a high near 64. Very windy, with a west wind 30 to 39 mph, with gusts as high as 60 mph.
Wednesday Night
Mostly clear, with a low around 38. Windy, with a west wind 19 to 29 mph becoming west southwest 7 to 12 mph. Winds could gust as high as 44 mph.
Thursday
Sunny, with a high near 63. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Thursday Night
Mostly clear, with a low around 39. Breezy, with a west wind 7 to 16 mph, with gusts as high as 25 mph.
Juneteenth
Mostly sunny, with a high near 62.
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 61. Windy.
Saturday Night
Mostly clear, with a low around 38. Windy.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 56. Windy.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 36. Breezy.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 56.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 38.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 59. Breezy.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Arapahoe Peak CO
 40.07°N 105.63°W (Elev. 11532 ft)
Last Update:
12:46 am MDT Jun 17, 2026
Forecast Valid:
1am MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation