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

Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Rain

34°F

1°C

Humidity 92%
Wind Speed NW 8 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 32°F (0°C)
Visibility 9.00 mi
Wind Chill27°F (-3°C)
Last update 01 Apr 03:53 AM MDT
Extended Forecast for

Greybull/S Big Horn Airport WY

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 32. Northwest wind around 6 mph.

    Low: 32 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 57. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 57 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 35. North northwest wind around 7 mph becoming south southeast in the evening. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. East southeast wind 6 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.

    High: 63 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Rain showers likely before midnight, then rain and snow showers between midnight and 3am, then snow showers after 3am. Some thunder is also possible. Low around 30. Blustery, with a northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Blustery.
    Showers
    Likely then
    Rain/Snow

  • Friday

    Friday: Snow showers before noon, then a chance of rain and snow showers. High near 46. Breezy, with a north northwest wind 16 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.

    High: 46 °F

    Breezy. Snow
    Showers then
    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A slight chance of rain and snow showers before midnight. Partly cloudy, with a low around 25. Blustery, with a north northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow and
    Blustery then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 32. Northwest wind around 6 mph.
Wednesday
A 30 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 57. Calm wind becoming north northwest around 6 mph in the afternoon.
Wednesday Night
A slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 35. North northwest wind around 7 mph becoming south southeast in the evening. Chance of precipitation is 20%.
Thursday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. East southeast wind 6 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.
Thursday Night
Rain showers likely before midnight, then rain and snow showers between midnight and 3am, then snow showers after 3am. Some thunder is also possible. Low around 30. Blustery, with a northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday
Snow showers before noon, then a chance of rain and snow showers. High near 46. Breezy, with a north northwest wind 16 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.
Friday Night
A slight chance of rain and snow showers before midnight. Partly cloudy, with a low around 25. Blustery, with a north northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greybull/S Big Horn Airport WY
 44.51°N 108.07°W (Elev. 3799 ft)
Last Update:
3:03 am MDT Apr 1, 2026
Forecast Valid:
4am MDT Apr 1, 2026-6pm MDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation