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

88°F

31°C

Humidity 49%
Wind Speed S 15 mph
Barometer 29.87 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 28 Aug 3:15 pm CDT
Extended Forecast for

Onida SD

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms between 4pm and 5pm. Partly sunny, with a high near 89. Southeast wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms

  • 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 88. East northeast wind 6 to 8 mph becoming south southwest in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 64. East northeast wind 9 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 89. East northeast wind around 11 mph becoming south southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. South wind 9 to 11 mph becoming north northwest after midnight.

    Low: 61 °F

    Partly Cloudy

  • Monday

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

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. East wind around 8 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. East wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms between 4pm and 5pm. Partly sunny, with a high near 89. Southeast wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
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 88. East northeast wind 6 to 8 mph becoming south southwest in the afternoon.
Saturday Night
A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 64. East northeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 89. East northeast wind around 11 mph becoming south southwest in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 61. South wind 9 to 11 mph becoming north northwest after midnight.
Monday
Mostly sunny, with a high near 84. North northwest wind 9 to 11 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 60. East wind around 8 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. East wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
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 88.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Onida SD
 44.7°N 100.06°W (Elev. 1900 ft)
Last Update:
3:01 pm CDT Aug 28, 2026
Forecast Valid:
3pm 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation