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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Current conditions at

South Big Horn County Airport (KGEY)

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

Clear

54°F

12°C

Humidity 46%
Wind Speed SE 5 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 13 May 02:20 AM MDT
Extended Forecast for

Greybull/S Big Horn Airport WY

  • Overnight

    Overnight: Mostly clear, with a low around 51. Light east southeast wind.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers after 4pm. Increasing clouds, with a high near 94. Breezy, with a light south southeast wind increasing to 13 to 18 mph in the morning. Winds could gust as high as 25 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Breezy, with a south wind 5 to 10 mph becoming northwest 12 to 17 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 77. Windy, with a light and variable wind becoming west 23 to 28 mph in the morning. Winds could gust as high as 46 mph.

    High: 77 °F

    Sunny and
    Windy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. Breezy, with a west northwest wind 19 to 24 mph becoming light and variable after midnight. Winds could gust as high as 45 mph.

    Low: 42 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 78. Breezy, with a light and variable wind becoming northwest 15 to 20 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 78 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Breezy, with a north northwest wind 16 to 21 mph becoming light and variable after midnight. Winds could gust as high as 36 mph.

    Low: 40 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 39. Breezy.

    Low: 39 °F

    Breezy.
    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 51. Light east southeast wind.
Wednesday
A 20 percent chance of showers after 4pm. Increasing clouds, with a high near 94. Breezy, with a light south southeast wind increasing to 13 to 18 mph in the morning. Winds could gust as high as 25 mph.
Wednesday Night
A slight chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Breezy, with a south wind 5 to 10 mph becoming northwest 12 to 17 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 77. Windy, with a light and variable wind becoming west 23 to 28 mph in the morning. Winds could gust as high as 46 mph.
Thursday Night
Mostly clear, with a low around 42. Breezy, with a west northwest wind 19 to 24 mph becoming light and variable after midnight. Winds could gust as high as 45 mph.
Friday
Sunny, with a high near 78. Breezy, with a light and variable wind becoming northwest 15 to 20 mph in the afternoon. Winds could gust as high as 36 mph.
Friday Night
Mostly clear, with a low around 40. Breezy, with a north northwest wind 16 to 21 mph becoming light and variable after midnight. Winds could gust as high as 36 mph.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 39. Breezy.
Sunday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 56. Breezy. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 33. Windy.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 57. Breezy.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
Mostly sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greybull/S Big Horn Airport WY
 44.51°N 108.07°W (Elev. 3799 ft)
Last Update:
12:32 am MDT May 13, 2026
Forecast Valid:
2am MDT May 13, 2026-6pm MDT May 19, 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