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

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

55°F

13°C

Humidity 96%
Wind Speed S 16 G 24 mph
Barometer 29.67 in (1005.3 mb)
Dewpoint 54°F (12°C)
Visibility 8.00 mi
Wind Chill51°F (11°C)
Last update 11 Apr 9:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Tonight

    Tonight: A slight chance of showers before 11pm. Patchy fog before 4am. Otherwise, mostly cloudy, with a low around 49. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 79. Breezy, with a south wind 17 to 22 mph becoming west in the afternoon. Winds could gust as high as 32 mph.

    High: 79 °F

    Becoming
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 45. West wind 6 to 13 mph becoming northeast after midnight.

    Low: 45 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 70. East wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 44. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 65. North wind 8 to 14 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 43. North northeast wind 8 to 13 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers. Mostly sunny, with a high near 69. West southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. South wind 8 to 11 mph.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers before 11pm. Patchy fog before 4am. Otherwise, mostly cloudy, with a low around 49. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 79. Breezy, with a south wind 17 to 22 mph becoming west in the afternoon. Winds could gust as high as 32 mph.
Sunday Night
Increasing clouds, with a low around 45. West wind 6 to 13 mph becoming northeast after midnight.
Monday
Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 70. East wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 44. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 65. North wind 8 to 14 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 43. North northeast wind 8 to 13 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 69. West southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 45. South wind 8 to 11 mph.
Thursday
Sunny, with a high near 71.
Thursday Night
A chance of showers. Partly cloudy, with a low around 39. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly cloudy, with a high near 51. Breezy. Chance of precipitation is 40%.
Friday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 22. Blustery. Chance of precipitation is 20%.
Saturday
A slight chance of snow showers. Partly sunny, with a high near 44. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
9:36 pm CDT Apr 11, 2026
Forecast Valid:
10pm CDT Apr 11, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation