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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Pierre, Pierre Regional Airport (KPIR)

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

Fair

84°F

29°C

Humidity 51%
Wind Speed SE 12 mph
Barometer 29.90 in (1010.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 16 Aug 12:53 pm CDT
Extended Forecast for

6 Miles N Agar SD

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. East wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 66. East wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 85. East wind around 10 mph. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. North wind 7 to 11 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85. East northeast wind around 9 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 61. East wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 85. East wind 8 to 10 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. East wind around 10 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. South southeast wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. East wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 66. East wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 85. East wind around 10 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 61. North wind 7 to 11 mph.
Monday
Mostly sunny, with a high near 85. East northeast wind around 9 mph.
Monday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 61. East wind 8 to 10 mph. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 85. East wind 8 to 10 mph.
Tuesday Night
Mostly clear, with a low around 61. East wind around 10 mph.
Wednesday
Sunny, with a high near 88. South southeast wind 9 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny and hot, with a high near 92.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 40%.
Friday
A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Agar SD
 44.92°N 100.08°W (Elev. 1900 ft)
Last Update:
12:46 pm CDT Aug 16, 2025
Forecast Valid:
1pm CDT Aug 16, 2025-6pm CDT Aug 22, 2025
 
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