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.

Overcast

32°F

0°C

Humidity 74%
Wind Speed WNW 10 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 31 Mar 05:20 AM MDT
Extended Forecast for

Greybull/S Big Horn Airport WY

  • Overnight

    Overnight: A 50 percent chance of snow showers. Cloudy, with a low around 30. Northwest wind around 9 mph. Little or no snow accumulation expected.

    Low: 30 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of snow showers before 11am. Mostly cloudy, with a high near 54. Northwest wind 5 to 7 mph becoming calm. New snow accumulation of less than a half inch possible.

    High: 54 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers between 9pm and 3am. Mostly cloudy, with a low around 32. Northwest wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 58. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 58 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 35. North northwest wind around 7 mph becoming southeast in the evening.

    Low: 35 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 62. Southeast wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 62 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Rain showers likely before midnight, then rain and snow showers likely. Mostly cloudy, with a low around 31. Blustery, with a northwest wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

    Low: 31 °F

    Blustery.
    Showers
    Likely then
    Rain/Snow
    Likely

  • Friday

    Friday: Snow showers likely, mainly before noon. Mostly cloudy, with a high near 47. Breezy. Chance of precipitation is 70%.

    High: 47 °F

    Snow Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 24. Blustery.

    Low: 24 °F

    Slight Chance
    Snow Showers
    and Blustery
    then Mostly
    Cloudy

Detailed Forecast

Overnight
A 50 percent chance of snow showers. Cloudy, with a low around 30. Northwest wind around 9 mph. Little or no snow accumulation expected.
Tuesday
A 50 percent chance of snow showers before 11am. Mostly cloudy, with a high near 54. Northwest wind 5 to 7 mph becoming calm. New snow accumulation of less than a half inch possible.
Tuesday Night
A slight chance of showers between 9pm and 3am. Mostly cloudy, with a low around 32. Northwest wind 3 to 7 mph. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 58. Calm wind becoming north 5 to 7 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 35. North northwest wind around 7 mph becoming southeast in the evening.
Thursday
A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 62. Southeast wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
Rain showers likely before midnight, then rain and snow showers likely. Mostly cloudy, with a low around 31. Blustery, with a northwest wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Friday
Snow showers likely, mainly before noon. Mostly cloudy, with a high near 47. Breezy. Chance of precipitation is 70%.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 24. Blustery.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 65.
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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:
5:21 am MDT Mar 31, 2026
Forecast Valid:
5am MDT Mar 31, 2026-6pm MDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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