Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Clear

N/A

Humidity NA
Wind Speed W 3 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update NA
Extended Forecast for

Greybull WY

  • Today

    Today: Sunny, with a high near 94. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. Breezy, with a west southwest wind 6 to 16 mph becoming north in the evening. Winds could gust as high as 24 mph.

    Low: 55 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Saturday

    Saturday: A 30 percent chance of showers after 5pm.  Sunny, with a high near 85. Northwest wind 6 to 13 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 85 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 50. Breezy, with a north northwest wind 15 to 23 mph, with gusts as high as 34 mph.  Chance of precipitation is 60%.

    Low: 50 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 67. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Partly cloudy, with a low around 43. North northwest wind 9 to 14 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.  Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 75. Light and variable wind becoming south southeast around 6 mph in the morning.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 94. Light and variable wind becoming south 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 55. Breezy, with a west southwest wind 6 to 16 mph becoming north in the evening. Winds could gust as high as 24 mph.
Saturday
A 30 percent chance of showers after 5pm. Sunny, with a high near 85. Northwest wind 6 to 13 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 50. Breezy, with a north northwest wind 15 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 67. Northwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. North northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 75. Light and variable wind becoming south southeast around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 53.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Thursday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.07°W (Elev. 3894 ft)
4:59 am MDT Jun 20, 2025
6am MDT Jun 20, 2025-6pm MDT Jun 26, 2025
 
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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