Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

75°F

24°C

Humidity 78%
Wind Speed W 5 mph
Barometer 30.08 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 17 Aug 10:55 am CDT
Extended Forecast for

14 Miles W Agar SD

  • Today

    Today: A slight chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 84. Northwest wind 3 to 8 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight.  Mostly cloudy, with a low around 59. West northwest wind around 7 mph becoming east southeast in the evening.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 4pm.  Patchy fog before 7am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 79. East northeast wind 6 to 8 mph becoming southwest in the morning.  Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 57. Northeast wind around 7 mph becoming southeast after midnight.  Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 77. East southeast wind 7 to 9 mph.  Chance of precipitation is 50%.

    High: 77 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 57. East southeast wind 7 to 9 mph becoming south after midnight.  Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 84. South wind 7 to 10 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. South southeast wind around 8 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Northwest wind 6 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 84 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. Northwest wind 3 to 8 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 59. West northwest wind around 7 mph becoming east southeast in the evening. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 79. East northeast wind 6 to 8 mph becoming southwest in the morning. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57. Northeast wind around 7 mph becoming southeast after midnight. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 77. East southeast wind 7 to 9 mph. Chance of precipitation is 50%.
Wednesday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. East southeast wind 7 to 9 mph becoming south after midnight. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 84. South wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 61. South southeast wind around 8 mph.
Friday
Sunny, with a high near 84. Northwest wind 6 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly clear, with a low around 58.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 20%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles W Agar SD
 44.85°N 100.34°W (Elev. 1886 ft)
10:27 am CDT Aug 17, 2026
11am CDT Aug 17, 2026-6pm CDT Aug 23, 2026
 
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