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 >

Current conditions at

South Big Horn County Airport (KGEY)

Lat: 44.5174°NLon: 108.0752°WElev: 3934.0ft.

Clear

82°F

28°C

Humidity 18%
Wind Speed N 18 MPH
Barometer 29.57 in (1001.36 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 Jun 10:20 PM MDT
Extended Forecast for

Greybull WY

  • Tonight

    Tonight: Mostly clear, with a low around 59. Windy, with a north northwest wind 21 to 26 mph, with gusts as high as 40 mph.

    Low: 59 °F

    Mostly Clear
    and Windy

  • Wednesday

    Wednesday: Sunny, with a high near 79. Windy, with a north northwest wind 20 to 26 mph, with gusts as high as 38 mph.

    High: 79 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. Breezy, with a northwest wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 36 mph.

    Low: 48 °F

    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Northwest wind 3 to 8 mph.

    Low: 50 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. Northwest wind 5 to 9 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Breezy. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Windy, with a north northwest wind 21 to 26 mph, with gusts as high as 40 mph.
Wednesday
Sunny, with a high near 79. Windy, with a north northwest wind 20 to 26 mph, with gusts as high as 38 mph.
Wednesday Night
Partly cloudy, with a low around 48. Breezy, with a northwest wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 36 mph.
Thursday
Sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 50. Northwest wind 3 to 8 mph.
Juneteenth
Sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 55. Northwest wind 5 to 9 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Breezy. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.07°W (Elev. 3894 ft)
Last Update:
8:48 pm MDT Jun 16, 2026
Forecast Valid:
10pm MDT Jun 16, 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