Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

South Big Horn County Airport (KGEY)

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

Clear

61°F

16°C

Humidity 55%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 44°F (7°C)
Visibility 8.00 mi
Last update 17 Aug 07:55 AM MDT
Extended Forecast for

8 Miles NNW Greybull/S Big Horn Airport WY

  • Today

    Today: Isolated showers and thunderstorms after 2pm.  Mostly sunny, with a high near 91. South southeast wind 5 to 11 mph becoming west in the afternoon.  Chance of precipitation is 10%.

    High: 91 °F

    Sunny then
    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before midnight.  Partly cloudy, with a low around 61. Northwest wind 5 to 9 mph becoming south southeast after midnight.  Chance of precipitation is 10%.

    Low: 61 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 95. South wind 5 to 7 mph.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. South southeast wind around 6 mph becoming east northeast in the evening.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South wind 3 to 6 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. East wind 6 to 8 mph.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. Southeast wind 5 to 8 mph becoming west northwest in the afternoon.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Today
Isolated showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. South southeast wind 5 to 11 mph becoming west in the afternoon. Chance of precipitation is 10%.
Tonight
Isolated showers and thunderstorms before midnight. Partly cloudy, with a low around 61. Northwest wind 5 to 9 mph becoming south southeast after midnight. Chance of precipitation is 10%.
Monday
Sunny, with a high near 95. South wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 63. South southeast wind around 6 mph becoming east northeast in the evening.
Tuesday
Sunny and hot, with a high near 99. South wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 65. East wind 6 to 8 mph.
Wednesday
Sunny and hot, with a high near 101. Southeast wind 5 to 8 mph becoming west northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 59.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNW Greybull/S Big Horn Airport WY
 44.64°N 108.12°W (Elev. 3799 ft)
7:58 am MDT Aug 17, 2025
8am MDT Aug 17, 2025-6pm MDT Aug 23, 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