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Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Pierre, Pierre Regional Airport (KPIR)

Lat: 44.38°NLon: 100.29°WElev: 1742ft.

Fair

72°F

22°C

Humidity 76%
Wind Speed NE 10 mph
Barometer 29.83 in (1008.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 15 Aug 5:53 am CDT
Extended Forecast for

Harrold SD

  • Today

    Today: Showers and thunderstorms likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 87. East northeast wind 16 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.

    High: 87 °F

    T-storms
    Likely then
    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 65. East northeast wind 14 to 18 mph. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. East northeast wind 14 to 17 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. East northeast wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Northeast wind 11 to 13 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62. East northeast wind 9 to 13 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 86. East northeast wind around 10 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. East wind 9 to 11 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. East wind around 10 mph.

    High: 89 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 87. East northeast wind 16 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.
Tonight
A chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 65. East northeast wind 14 to 18 mph. Chance of precipitation is 40%.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. East northeast wind 14 to 17 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. East northeast wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Northeast wind 11 to 13 mph. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62. East northeast wind 9 to 13 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 86. East northeast wind around 10 mph.
Monday Night
Mostly clear, with a low around 63. East wind 9 to 11 mph.
Tuesday
Sunny, with a high near 89. East wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny and hot, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrold SD
 44.52°N 99.72°W (Elev. 1788 ft)
Last Update:
5:46 am CDT Aug 15, 2025
Forecast Valid:
6am CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
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