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 >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

70°F

21°C

Humidity 88%
Wind Speed SE 12 mph
Barometer 29.98 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 Aug 10:15 pm CDT
Extended Forecast for

5 Miles W Ree Heights SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. East wind around 6 mph becoming southwest after midnight.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly between 4pm and 5pm.  Mostly cloudy, then gradually becoming sunny, with a high near 81. South wind 6 to 9 mph becoming west southwest in the afternoon.  Chance of precipitation is 30%.

    High: 81 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 62. East wind 8 to 14 mph becoming south after midnight.  Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 87. South southwest wind around 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. North wind 6 to 9 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Northeast wind 5 to 11 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. East northeast wind around 9 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82. East wind 9 to 13 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 62. East southeast wind 13 to 16 mph.  Chance of precipitation is 30%.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 59. East wind around 6 mph becoming southwest after midnight.
Wednesday
A chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 81. South wind 6 to 9 mph becoming west southwest in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 62. East wind 8 to 14 mph becoming south after midnight. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 87. South southwest wind around 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 62. North wind 6 to 9 mph.
Friday
Sunny, with a high near 85. Northeast wind 5 to 11 mph.
Friday Night
Mostly clear, with a low around 59. East northeast wind around 9 mph.
Saturday
Mostly sunny, with a high near 82. East wind 9 to 13 mph.
Saturday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. East southeast wind 13 to 16 mph. Chance of precipitation is 30%.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Breezy. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Ree Heights SD
 44.53°N 99.3°W (Elev. 1765 ft)
9:36 pm CDT Aug 18, 2026
10pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database