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.

Overcast

72°F

22°C

Humidity 91%
Wind Speed E 13 G 22 mph
Barometer 29.94 in (1012.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 17 Aug 2:53 am CDT
Extended Forecast for

4 Miles ESE Watertown Municipal Airport SD

  • Overnight

    Overnight: A slight chance of showers and thunderstorms.  Mostly cloudy, with a steady temperature around 72. East wind around 16 mph.  Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 85. East wind around 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 66. East southeast wind 6 to 10 mph becoming west southwest after midnight.  Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Northwest wind 6 to 9 mph.

    High: 81 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North northeast wind 3 to 8 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Northeast wind around 6 mph.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. East northeast wind around 6 mph becoming calm  after midnight.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. East southeast wind around 8 mph.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 72. East wind around 16 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 85. East wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East southeast wind 6 to 10 mph becoming west southwest after midnight. Chance of precipitation is 40%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 81. Northwest wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 62. North northeast wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 81. Northeast wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 61. East northeast wind around 6 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 82. Calm wind becoming southeast 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 61. East southeast wind around 8 mph.
Thursday
Sunny, with a high near 83.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Watertown Municipal Airport SD
 44.89°N 97.08°W (Elev. 1739 ft)
2:46 am CDT Aug 17, 2025
3am CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database