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

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

66°F

19°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.98 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 19 Aug 8:35 am CDT
Extended Forecast for

2 Miles W Onida SD

  • Today

    Today: A slight chance of showers and thunderstorms before 9am.  Mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 9 mph in the morning.  Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms then
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. South wind 8 to 11 mph.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 87. South southwest wind 8 to 11 mph becoming north 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 60. North northwest wind 6 to 8 mph becoming east after midnight.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. East wind 7 to 10 mph.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. East northeast wind around 10 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 81. East wind 10 to 13 mph.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 61. East southeast wind 11 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 30%.

    Low: 61 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before 1pm.  Mostly cloudy, with a high near 82. Breezy, with a south southeast wind 16 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 61. South wind 8 to 11 mph.
Thursday
Sunny, with a high near 87. South southwest wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 60. North northwest wind 6 to 8 mph becoming east after midnight.
Friday
Sunny, with a high near 87. East wind 7 to 10 mph.
Friday Night
Mostly clear, with a low around 59. East northeast wind around 10 mph.
Saturday
Mostly sunny, with a high near 81. East wind 10 to 13 mph.
Saturday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. East southeast wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 82. Breezy, with a south southeast wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Onida SD
 44.7°N 100.09°W (Elev. 1896 ft)
8:36 am CDT Aug 19, 2026
8am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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