National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

79°F

26°C

Humidity 61%
Wind Speed S 17 G 25 mph
Barometer 29.95 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 28 Aug 11:15 am CDT
Extended Forecast for

Onida SD

  • Today

    Today: Partly sunny, with a high near 89. Breezy, with a southeast wind 17 to 20 mph, with gusts as high as 29 mph.

    High: 89 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 65. East southeast wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 89. East northeast wind 6 to 8 mph becoming south southwest in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before midnight. Increasing clouds, with a low around 64. East northeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 88. Northeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. Southeast wind 9 to 11 mph becoming north northwest after midnight. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 84. North northwest wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. South wind 6 to 8 mph becoming east in the evening.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. South southeast wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 89. Breezy, with a southeast wind 17 to 20 mph, with gusts as high as 29 mph.
Tonight
A chance of showers and thunderstorms, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 65. East southeast wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 89. East northeast wind 6 to 8 mph becoming south southwest in the afternoon.
Saturday Night
A chance of showers and thunderstorms, mainly before midnight. Increasing clouds, with a low around 64. East northeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 88. Northeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. Southeast wind 9 to 11 mph becoming north northwest after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 84. North northwest wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 59. South wind 6 to 8 mph becoming east in the evening.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. South southeast wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Onida SD
 44.72°N 100.1°W (Elev. 1893 ft)
Last Update:
11:06 am CDT Aug 28, 2026
Forecast Valid:
11am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation