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 23 mph
Barometer 29.94 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 28 Aug 11:35 am CDT
Extended Forecast for

Highmore SD

  • Today

    Today: Partly sunny, with a high near 87. Breezy, with a south southeast wind 18 to 20 mph, with gusts as high as 29 mph.

    High: 87 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 65. Southeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Northeast wind 7 to 9 mph.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. East northeast wind 9 to 13 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 87. East northeast wind around 11 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East southeast wind 8 to 11 mph becoming north northwest after midnight. Chance of precipitation is 20%.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 82. North northwest wind 10 to 13 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Northwest wind around 8 mph becoming southeast after midnight.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 82. South southeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 87. Breezy, with a south southeast wind 18 to 20 mph, with gusts as high as 29 mph.
Tonight
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 65. Southeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 87. Northeast wind 7 to 9 mph.
Saturday Night
A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. East northeast wind 9 to 13 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 87. East northeast wind around 11 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East southeast wind 8 to 11 mph becoming north northwest after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 82. North northwest wind 10 to 13 mph.
Monday Night
Mostly clear, with a low around 61. Northwest wind around 8 mph becoming southeast after midnight.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 82. South southeast wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Highmore SD
 44.52°N 99.45°W (Elev. 1886 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

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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