National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

WY28 - South Pass (KSOU)

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

NA

59°F

15°C

Humidity 52%
Wind Speed NW 6 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility 1.24 mi
Last update 17 Aug 09:26 PM MDT
Extended Forecast for

South Pass City WY

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. North wind 6 to 9 mph becoming west after midnight.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Scattered showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 75. Breezy, with a west wind 9 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Scattered
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Scattered showers before 8pm. Partly cloudy, with a low around 55. Breezy, with a west southwest wind 5 to 15 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 30%.

    Low: 55 °F

    Scattered
    Showers and
    Breezy then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77. Breezy, with a west wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 77 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Breezy, with a northwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 28 mph.

    Low: 56 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Breezy, with a west southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 81 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. West northwest wind 7 to 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. North wind 6 to 9 mph becoming west after midnight.
Tuesday
Scattered showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 75. Breezy, with a west wind 9 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Scattered showers before 8pm. Partly cloudy, with a low around 55. Breezy, with a west southwest wind 5 to 15 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 77. Breezy, with a west wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
Mostly clear, with a low around 56. Breezy, with a northwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 81. Breezy, with a west southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 59. West northwest wind 7 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
Friday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Breezy.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 76. Breezy.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Pass City WY
 42.46°N 108.81°W (Elev. 7953 ft)
Last Update:
8:17 pm MDT Aug 17, 2026
Forecast Valid:
9pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation