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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.

Partly Cloudy

84°F

29°C

Humidity 23%
Wind Speed NW 12 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 Aug 05:35 PM MDT
Extended Forecast for

Manderson WY

  • This Afternoon

    This Afternoon: A 10 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. West wind around 10 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 61. West wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 91. Southeast wind around 5 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. East southeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. East southeast wind 6 to 10 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. Southeast wind 5 to 8 mph becoming west northwest in the afternoon.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. West wind around 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 61. West wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Monday
Sunny, with a high near 91. Southeast wind around 5 mph.
Monday Night
Mostly clear, with a low around 57. East southeast wind 5 to 7 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 60. East southeast wind 6 to 10 mph.
Wednesday
Sunny and hot, with a high near 98. Southeast wind 5 to 8 mph becoming west northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 55.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 85.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Manderson WY
 44.29°N 107.95°W (Elev. 4052 ft)
Last Update:
5:13 pm MDT Aug 17, 2025
Forecast Valid:
5pm MDT Aug 17, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation