Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

70°F

21°C

Humidity 93%
Wind Speed E 6 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 17 Aug 9:53 pm CDT
Extended Forecast for

2 Miles S Webster SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southeast wind 5 to 9 mph becoming northwest after midnight.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 79. North northwest wind around 9 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North northeast wind 5 to 7 mph becoming east after midnight.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 80. East northeast wind around 6 mph.

    High: 80 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. East northeast wind around 6 mph becoming south southeast after midnight.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. South southeast wind 6 to 9 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. Southeast wind around 10 mph, with gusts as high as 21 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. South wind 11 to 14 mph, with gusts as high as 24 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 61. South wind around 10 mph becoming northwest after midnight.  Chance of precipitation is 50%.

    Low: 61 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 65. Southeast wind 5 to 9 mph becoming northwest after midnight.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 79. North northwest wind around 9 mph.
Monday Night
Partly cloudy, with a low around 62. North northeast wind 5 to 7 mph becoming east after midnight.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 80. East northeast wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 62. East northeast wind around 6 mph becoming south southeast after midnight.
Wednesday
Sunny, with a high near 81. South southeast wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 63. Southeast wind around 10 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 83. South wind 11 to 14 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. South wind around 10 mph becoming northwest after midnight. Chance of precipitation is 50%.
Friday
A slight chance of showers before 1pm. Mostly sunny, with a high near 75. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Webster SD
 45.31°N 97.52°W (Elev. 1867 ft)
9:46 pm CDT Aug 17, 2025
10pm CDT Aug 17, 2025-6pm CDT Aug 24, 2025
 
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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