Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Clear

12°F

-11°C

Humidity 78%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Last update 20 Jan 02:35 AM MST
Extended Forecast for

Greybull WY

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 18. Light and variable wind.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 36. Breezy, with a light and variable wind becoming north northwest 16 to 21 mph in the morning. Winds could gust as high as 31 mph.

    High: 36 °F

    Partly Sunny
    then
    Decreasing
    Clouds and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 9. Southwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 9 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Light west northwest wind becoming northwest 5 to 9 mph in the morning.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 8. Calm wind.

    Low: 8 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. Calm wind becoming northwest 5 to 9 mph in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 7. Northwest wind 5 to 8 mph.

    Low: 7 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 18. Light and variable wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 36. Breezy, with a light and variable wind becoming north northwest 16 to 21 mph in the morning. Winds could gust as high as 31 mph.
Tuesday Night
Mostly clear, with a low around 9. Southwest wind 5 to 7 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 34. Light west northwest wind becoming northwest 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 8. Calm wind.
Thursday
Mostly sunny, with a high near 29. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 7. Northwest wind 5 to 8 mph.
Friday
Partly sunny, with a high near 25.
Friday Night
Partly cloudy, with a low around 2.
Saturday
Sunny, with a high near 30.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 12.
Monday
Partly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.04°W (Elev. 3973 ft)
2:48 am MST Jan 20, 2026
2am MST Jan 20, 2026-6pm MST Jan 26, 2026
 
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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