Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Onaka SD

  • Today

    Today: Sunny, with a high near 81. East wind 5 to 9 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 56. East wind 9 to 11 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms, mainly before 3pm.  Partly sunny, with a high near 85. Breezy, with a southeast wind 13 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 40%.

    High: 85 °F

    Slight Chance
    T-storms then
    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am.  Increasing clouds, with a low around 61. Southeast wind 10 to 18 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 86. Northeast wind around 9 mph.

    High: 86 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 63. East northeast wind around 11 mph.  Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 86. Northeast wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 60. East northeast wind around 11 mph becoming north northwest after midnight.  Chance of precipitation is 20%.

    Low: 60 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 82. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 81. East wind 5 to 9 mph.
Tonight
Partly cloudy, with a low around 56. East wind 9 to 11 mph.
Friday
A chance of showers and thunderstorms, mainly before 3pm. Partly sunny, with a high near 85. Breezy, with a southeast wind 13 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Increasing clouds, with a low around 61. Southeast wind 10 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Partly sunny, with a high near 86. Northeast wind around 9 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East northeast wind around 11 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 86. Northeast wind 11 to 13 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 60. East northeast wind around 11 mph becoming north northwest after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 82. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 83.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Onaka SD
 45.19°N 99.45°W (Elev. 1850 ft)
9:06 am CDT Aug 27, 2026
9am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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