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

71°F

22°C

Humidity 47%
Wind Speed NW 17 G 26 mph
Barometer 30.01 in (1015.7 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 24 Jun 5:53 pm CDT
Extended Forecast for

6 Miles NNW Castlewood SD

  • Tonight

    Tonight: Mostly clear, with a low around 51. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 76. North northwest wind 5 to 7 mph.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. East southeast wind 5 to 7 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79. Southeast wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63. Southeast wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Breezy, with a south southeast wind 18 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.

    High: 84 °F

    Breezy.
    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Breezy, with a southeast wind 17 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 96. South southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 96 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71. Southwest wind 7 to 10 mph becoming south southeast after midnight. Chance of precipitation is 20%.

    Low: 71 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 51. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 76. North northwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 55. East southeast wind 5 to 7 mph.
Friday
Partly sunny, with a high near 79. Southeast wind 7 to 15 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 63. Southeast wind 14 to 16 mph, with gusts as high as 26 mph.
Saturday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Breezy, with a south southeast wind 18 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Breezy, with a southeast wind 17 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.
Sunday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 96. South southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71. Southwest wind 7 to 10 mph becoming south southeast after midnight. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms. Sunny and hot, with a high near 93. Breezy. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 65. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Castlewood SD
 44.8°N 97.11°W (Elev. 1706 ft)
Last Update:
5:36 pm CDT Jun 24, 2026
Forecast Valid:
6pm CDT Jun 24, 2026-6pm CDT Jul 1, 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