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.

Light Rain

40°F

4°C

Humidity 83%
Wind Speed N 8 mph
Barometer 30.04 in (1018.3 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 25 Apr 1:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • This Afternoon

    This Afternoon: Showers likely. Cloudy, with a high near 43. North northeast wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely, mainly before 2am. Cloudy, with a low around 37. Northeast wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, mainly after 11am. High near 54. East wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Patchy fog between 9pm and 11pm. Low around 44. East northeast wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 44 °F

    Showers and
    Patchy Fog

  • Monday

    Monday: Showers. High near 51. Breezy, with a northeast wind 14 to 19 mph becoming north northwest 20 to 25 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 51 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: A chance of showers before 1am. Mostly cloudy, with a low around 31. Blustery, with a northwest wind 16 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Showers and
    Blustery

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. Northwest wind around 14 mph, with gusts as high as 23 mph.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. Northwest wind 5 to 10 mph becoming light in the evening.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers. Mostly sunny, with a high near 54. Light west wind becoming west northwest 9 to 14 mph in the morning. Chance of precipitation is 30%.

    High: 54 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Showers likely. Cloudy, with a high near 43. North northeast wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers likely, mainly before 2am. Cloudy, with a low around 37. Northeast wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers, mainly after 11am. High near 54. East wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Patchy fog between 9pm and 11pm. Low around 44. East northeast wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Showers. High near 51. Breezy, with a northeast wind 14 to 19 mph becoming north northwest 20 to 25 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
A chance of showers before 1am. Mostly cloudy, with a low around 31. Blustery, with a northwest wind 16 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 50. Northwest wind around 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Northwest wind 5 to 10 mph becoming light in the evening.
Wednesday
A chance of showers. Mostly sunny, with a high near 54. Light west wind becoming west northwest 9 to 14 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
A slight chance of showers. Mostly sunny, with a high near 52. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
1:31 pm CDT Apr 25, 2026
Forecast Valid:
2pm CDT Apr 25, 2026-6pm CDT May 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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