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

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Mostly Cloudy

64°F

18°C

Humidity 45%
Wind Speed S 13 G 22 mph
Barometer 30.11 in (1019.9 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 21 May 1:53 pm CDT
Extended Forecast for

Webster SD

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 65. South southeast wind around 15 mph, with gusts as high as 23 mph.

    High: 65 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Southeast wind around 14 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Decreasing
    Clouds

  • Friday

    Friday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 54. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Showers and
    Breezy

  • Friday Night

    Friday Night: A chance of showers before midnight. Mostly cloudy, with a low around 41. Southeast wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 50%.

    Low: 41 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66. West wind around 11 mph, with gusts as high as 21 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. South wind 5 to 7 mph.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76. South wind around 9 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. South southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 83. South wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 65. South southeast wind around 15 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Southeast wind around 14 mph, with gusts as high as 25 mph.
Friday
Showers and possibly a thunderstorm before 4pm, then showers likely. High near 54. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers before midnight. Mostly cloudy, with a low around 41. Southeast wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 66. West wind around 11 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 45. South wind 5 to 7 mph.
Sunday
Sunny, with a high near 76. South wind around 9 mph.
Sunday Night
Mostly clear, with a low around 52. South southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Memorial Day
Sunny, with a high near 83. South wind 10 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Webster SD
 45.33°N 97.52°W (Elev. 1831 ft)
Last Update:
2:36 pm CDT May 21, 2026
Forecast Valid:
2pm CDT May 21, 2026-6pm CDT May 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation