Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

WY28 - South Pass (KSOU)

Lat: 42.47752°NLon: 108.8444°WElev: 8196.0ft.

NA

30°F

-1°C

Humidity 64%
Wind Speed WNW 7 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill23°F (-5°C)
Last update 20 May 12:42 AM MDT
Extended Forecast for

15 Miles SW South Pass City WY

  • Overnight

    Overnight: Clear, with a low around 23. West southwest wind 5 to 7 mph becoming calm.

    Low: 23 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. Light west northwest wind becoming west 8 to 13 mph in the morning.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain and snow showers, mainly after 5am.  Mostly cloudy, with a low around 32. West wind 8 to 13 mph becoming light and variable.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Thursday

    Thursday: Rain, possibly mixed with snow showers, becoming all rain after 3pm. Some thunder is also possible.  High near 51. Calm wind becoming east 5 to 9 mph in the afternoon.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 51 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain showers, mixing with snow after 9pm, then gradually ending. Some thunder is also possible.  Mostly cloudy, with a low around 27. Northeast wind 5 to 10 mph becoming light north  after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57. Calm wind becoming west around 5 mph in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. West wind around 5 mph becoming calm  in the evening.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 23. West southwest wind 5 to 7 mph becoming calm.
Wednesday
Mostly sunny, with a high near 58. Light west northwest wind becoming west 8 to 13 mph in the morning.
Wednesday Night
A chance of rain and snow showers, mainly after 5am. Mostly cloudy, with a low around 32. West wind 8 to 13 mph becoming light and variable. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday
Rain, possibly mixed with snow showers, becoming all rain after 3pm. Some thunder is also possible. High near 51. Calm wind becoming east 5 to 9 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
A chance of rain showers, mixing with snow after 9pm, then gradually ending. Some thunder is also possible. Mostly cloudy, with a low around 27. Northeast wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday
Mostly sunny, with a high near 57. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 31. West wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 39.
Memorial Day
Sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 73.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles SW South Pass City WY
 42.3°N 108.99°W (Elev. 7047 ft)
12:17 am MDT May 20, 2026
12am MDT May 20, 2026-6pm MDT May 26, 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