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

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Rain

70°F

21°C

Humidity 93%
Wind Speed N 12 G 22 mph
Barometer 29.92 in (1012.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 16 Aug 6:53 am CDT
Extended Forecast for

Florence SD

  • Today

    Today: Showers and thunderstorms likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. North northwest wind 11 to 14 mph becoming east southeast in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 5am. Increasing clouds, with a low around 67. East wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 81 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. East southeast wind 8 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 81. North wind 8 to 10 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. Northeast wind 6 to 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. East northeast wind 6 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Southeast wind 5 to 9 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Southeast wind 5 to 9 mph.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. North northwest wind 11 to 14 mph becoming east southeast in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly after 5am. Increasing clouds, with a low around 67. East wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. East southeast wind 8 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 81. North wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 62. Northeast wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 79. East northeast wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 60. Southeast wind 5 to 9 mph.
Wednesday
Sunny, with a high near 80. Southeast wind 5 to 9 mph.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 84.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Florence SD
 45.06°N 97.33°W (Elev. 1759 ft)
Last Update:
7:45 am CDT Aug 16, 2025
Forecast Valid:
7am CDT Aug 16, 2025-6pm CDT Aug 22, 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