Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

South Big Horn County Airport (KGEY)

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

Clear

91°F

33°C

Humidity 15%
Wind Speed SW 5 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 27 Aug 04:00 PM MDT
Extended Forecast for

5 Miles NNW Greybull/S Big Horn Airport WY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 92. South wind around 6 mph.

    High: 92 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. South wind 5 to 8 mph becoming north in the evening.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Scattered showers and thunderstorms, mainly after 3pm.  Increasing clouds, with a high near 85. South southeast wind 5 to 9 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 50%.

    High: 85 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Friday Night

    Friday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 61. North northwest wind 5 to 8 mph becoming south southeast after midnight.  Chance of precipitation is 40%.

    Low: 61 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 80. West wind 5 to 8 mph becoming northeast in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 30%.

    High: 80 °F

    Scattered
    Showers then
    Isolated
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 57. Northwest wind 5 to 8 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 80. Southeast wind 6 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 30%.

    High: 80 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 92. South wind around 6 mph.
Tonight
Mostly cloudy, with a low around 63. South wind 5 to 8 mph becoming north in the evening.
Friday
Scattered showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 85. South southeast wind 5 to 9 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Friday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 61. North northwest wind 5 to 8 mph becoming south southeast after midnight. Chance of precipitation is 40%.
Saturday
Scattered showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 80. West wind 5 to 8 mph becoming northeast in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Saturday Night
A 10 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 57. Northwest wind 5 to 8 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80. Southeast wind 6 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Greybull/S Big Horn Airport WY
 44.6°N 108.12°W (Elev. 4770 ft)
3:47 pm MDT Aug 27, 2026
4pm MDT Aug 27, 2026-6pm MDT Sep 2, 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