Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Partly Cloudy

N/A

Humidity 29%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 18 Jul 06:30 PM MDT
Extended Forecast for

Greybull WY

Heat Advisory July 26, 02:09pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 02:09pm until July 26, 09:00pm

    NOW until 9:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 100 °F

    Hot

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 66. North wind 6 to 11 mph becoming light and variable  in the evening. Winds could gust as high as 21 mph.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Partly sunny and hot, with a high near 97. Light and variable wind becoming west northwest 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 63. West wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 22 mph.

    Low: 63 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Light and variable wind becoming south southwest around 6 mph in the morning.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. West northwest wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 99. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 100. North northwest wind 5 to 10 mph becoming west southwest. Winds could gust as high as 21 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 66. North wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Monday
Partly sunny and hot, with a high near 97. Light and variable wind becoming west northwest 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 63. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Tuesday
Sunny and hot, with a high near 100. Light and variable wind becoming south southwest around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 64. West northwest wind 5 to 7 mph becoming light and variable after midnight.
Wednesday
Mostly sunny and hot, with a high near 99. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny and hot, with a high near 103.
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ABOUT THIS FORECAST

 
Point Forecast:
Greybull WY
 44.49°N 108.07°W (Elev. 3894 ft)
1:31 pm MDT Jul 26, 2026
2pm MDT Jul 26, 2026-6pm MDT Aug 1, 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