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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.

Overcast

69°F

21°C

Humidity 96%
Wind Speed E 8 G 20 mph
Barometer 29.92 in (1012.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 17 Aug 6:53 am CDT
Extended Forecast for

6 Miles W Lake Norden SD

  • Today

    Today: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 87. East southeast wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 67. East southeast wind 7 to 11 mph becoming southwest after midnight. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 82. Northwest wind 6 to 9 mph.

    High: 82 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. Northeast wind 5 to 8 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. Northeast wind 5 to 7 mph.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. East northeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Southeast wind 3 to 8 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. South southeast wind around 9 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. South wind 9 to 14 mph.

    High: 85 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 87. East southeast wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 67. East southeast wind 7 to 11 mph becoming southwest after midnight. Chance of precipitation is 30%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 82. Northwest wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 63. Northeast wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 82. Northeast wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 62. East northeast wind 5 to 7 mph becoming light and variable after midnight.
Wednesday
Sunny, with a high near 83. Southeast wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 62. South southeast wind around 9 mph.
Thursday
Sunny, with a high near 85. South wind 9 to 14 mph.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Mostly clear, with a low around 56. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles W Lake Norden SD
 44.56°N 97.32°W (Elev. 1755 ft)
Last Update:
6:46 am CDT Aug 17, 2025
Forecast Valid:
7am CDT Aug 17, 2025-6pm CDT Aug 23, 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