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

Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Rain Fog/Mist

63°F

17°C

Humidity 93%
Wind Speed S 10 mph
Barometer 30.09 in (1018.6 mb)
Dewpoint 61°F (16°C)
Visibility 5.00 mi
Last update 3 Aug 1:53 am CDT
Extended Forecast for

Willow Lake SD

  • Overnight

    Overnight: A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Areas of smoke. Mostly cloudy, with a low around 60. South southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Patchy smoke before 4pm. Cloudy, with a high near 72. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 61. South southeast wind 9 to 13 mph. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 78. South wind 9 to 11 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 63. South southeast wind 10 to 13 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 80. Breezy, with a south southeast wind 13 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southeast wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers before 1pm. Mostly sunny, with a high near 84. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers, with thunderstorms also possible after 1am. Mostly clear, with a low around 67. South southeast wind around 10 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Areas of smoke. Mostly cloudy, with a low around 60. South southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Patchy smoke before 4pm. Cloudy, with a high near 72. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 61. South southeast wind 9 to 13 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 78. South wind 9 to 11 mph. Chance of precipitation is 30%.
Monday Night
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 63. South southeast wind 10 to 13 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 80. Breezy, with a south southeast wind 13 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southeast wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Wednesday
A slight chance of showers before 1pm. Mostly sunny, with a high near 84. South wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers, with thunderstorms also possible after 1am. Mostly clear, with a low around 67. South southeast wind around 10 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 86.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 89.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Willow Lake SD
 44.62°N 97.65°W (Elev. 1762 ft)
Last Update:
2:46 am CDT Aug 3, 2025
Forecast Valid:
2am CDT Aug 3, 2025-6pm CDT Aug 9, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation