Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

A Few Clouds

69°F

21°C

Humidity 87%
Wind Speed SE 5 mph
Barometer 30.02 in (1017.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 19 Aug 10:56 am CDT
Extended Forecast for

4 Miles SW Yankton SD

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 2pm.  Mostly sunny, with a high near 77. East wind 5 to 7 mph.  New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 61. East southeast wind around 5 mph becoming light and variable.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, sunny, with a high near 85. South southwest wind 5 to 9 mph, with gusts as high as 17 mph.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. South southwest wind around 6 mph becoming calm  in the evening.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms.  Mostly clear, with a low around 63. Light and variable wind.  Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 81. East northeast wind 3 to 8 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 61. East wind around 5 mph.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 1pm.  Mostly cloudy, with a high near 78. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 78 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 77. East wind 5 to 7 mph. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Mostly clear, with a low around 61. East southeast wind around 5 mph becoming light and variable.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 85. South southwest wind 5 to 9 mph, with gusts as high as 17 mph.
Thursday Night
Mostly clear, with a low around 64. South southwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 63. Light and variable wind. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 81. East northeast wind 3 to 8 mph.
Saturday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. East wind around 5 mph.
Sunday
A slight chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 78. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. South southeast wind 7 to 10 mph, with gusts as high as 17 mph.
Monday
Mostly sunny, with a high near 82. South wind 6 to 10 mph, with gusts as high as 18 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southwest wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 84. Calm wind becoming northwest 5 to 8 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Yankton SD
 42.84°N 97.45°W (Elev. 1299 ft)
11:51 am CDT Aug 19, 2026
11am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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