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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Clear

18°F

-8°C

Humidity 92%
Wind Speed NW 3 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 01 Jan 07:35 AM MST
Extended Forecast for

Greybull WY

  • New Year's Day

    New Year's Day: Mostly cloudy, with a high near 46. Calm wind.

    High: 46 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers after 8pm. Cloudy, with a low around 29. Calm wind becoming east southeast around 5 mph.

    Low: 29 °F

    Slight Chance
    Showers

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 48. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 48 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. Southeast wind 3 to 5 mph.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 51. Southeast wind 5 to 9 mph.

    High: 51 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29. Southeast wind 6 to 9 mph.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53. South southeast wind 6 to 9 mph.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

Detailed Forecast

New Year's Day
Mostly cloudy, with a high near 46. Calm wind.
Tonight
A 20 percent chance of showers after 8pm. Cloudy, with a low around 29. Calm wind becoming east southeast around 5 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 48. Calm wind becoming south southeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 26. Southeast wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 51. Southeast wind 5 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 29. Southeast wind 6 to 9 mph.
Sunday
Mostly sunny, with a high near 53. South southeast wind 6 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 27.
Monday
Partly sunny, with a high near 52.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.04°W (Elev. 3973 ft)
Last Update:
7:17 am MST Jan 1, 2026
Forecast Valid:
7am MST Jan 1, 2026-6pm MST Jan 7, 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