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.

A Few Clouds

64°F

18°C

Humidity 70%
Wind Speed E 5 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 25 Jun 10:53 pm CDT
Extended Forecast for

Clark SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. East southeast wind 5 to 11 mph.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers between 11am and noon. Mostly cloudy, with a high near 78. Southeast wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 29 mph.

    Low: 62 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Saturday

    Saturday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. Breezy, with a south southeast wind 22 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.

    High: 80 °F

    Breezy.
    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Breezy, with a southeast wind 21 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 92. Breezy, with a south southeast wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South southeast wind 10 to 15 mph.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 92. Breezy, with a south southeast wind 20 to 22 mph becoming southwest in the afternoon. Winds could gust as high as 32 mph.

    High: 92 °F

    Hot and
    Breezy

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 65. West southwest wind 7 to 16 mph becoming south after midnight. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 55. East southeast wind 5 to 11 mph.
Friday
A slight chance of showers between 11am and noon. Mostly cloudy, with a high near 78. Southeast wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 62. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 29 mph.
Saturday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. Breezy, with a south southeast wind 22 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Breezy, with a southeast wind 21 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Sunday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 92. Breezy, with a south southeast wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 72. South southeast wind 10 to 15 mph.
Monday
Sunny and hot, with a high near 92. Breezy, with a south southeast wind 20 to 22 mph becoming southwest in the afternoon. Winds could gust as high as 32 mph.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 65. West southwest wind 7 to 16 mph becoming south after midnight. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 66. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 40%.
Thursday
Mostly sunny and hot, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clark SD
 44.88°N 97.75°W (Elev. 1808 ft)
Last Update:
10:36 pm CDT Jun 25, 2026
Forecast Valid:
11pm CDT Jun 25, 2026-6pm CDT Jul 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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