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.

Rain Fog/Mist

47°F

8°C

Humidity 97%
Wind Speed N 15 mph
Barometer 29.83 in (1011.0 mb)
Dewpoint 46°F (8°C)
Visibility 5.00 mi
Wind Chill41°F (5°C)
Last update 18 May 3:53 pm CDT
Extended Forecast for

Webster SD

  • This Afternoon

    This Afternoon: Showers. Steady temperature around 45. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Showers

  • Tonight

    Tonight: Showers, mainly before 10pm. Low around 37. North wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers then
    Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 49. Northwest wind 15 to 17 mph, with gusts as high as 28 mph.

    High: 49 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Patchy frost after 3am. Otherwise, partly cloudy, with a low around 33. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 33 °F

    Partly Cloudy
    then Patchy
    Frost

  • Wednesday

    Wednesday: Areas of frost before 8am. Otherwise, sunny, with a high near 61. South wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 61 °F

    Areas Frost
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. South southeast wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64. South southeast wind 13 to 17 mph, with gusts as high as 29 mph.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 42. South southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 60. Southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 60 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Showers. Steady temperature around 45. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers, mainly before 10pm. Low around 37. North wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 49. Northwest wind 15 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Patchy frost after 3am. Otherwise, partly cloudy, with a low around 33. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Wednesday
Areas of frost before 8am. Otherwise, sunny, with a high near 61. South wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 41. South southeast wind 9 to 13 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 64. South southeast wind 13 to 17 mph, with gusts as high as 29 mph.
Thursday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 42. South southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 60. Southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Saturday
A slight chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 47. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 78.
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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:
4:36 pm CDT May 18, 2026
Forecast Valid:
4pm CDT May 18, 2026-6pm CDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation