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.

Overcast

60°F

16°C

Humidity 93%
Wind Speed S 15 mph
Barometer 30.17 in (1021.6 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 24 Sep 10:53 am CDT
Extended Forecast for

Castlewood SD

  • Today

    Today: A slight chance of showers before noon. Cloudy, with a high near 63. South wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 63 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers between 3am and 4am. Cloudy, with a low around 56. South southeast wind 5 to 7 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers

  • Friday

    Friday: Cloudy, with a high near 65. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 65 °F

    Cloudy

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Cloudy, with a low around 56. Southeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 67. South southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56. Southeast wind 3 to 8 mph.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 70. Southeast wind 3 to 8 mph.

    High: 70 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 56. Southeast wind 7 to 9 mph.

    Low: 56 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 69. South wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers before noon. Cloudy, with a high near 63. South wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tonight
A slight chance of showers between 3am and 4am. Cloudy, with a low around 56. South southeast wind 5 to 7 mph. Chance of precipitation is 20%.
Friday
Cloudy, with a high near 65. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.
Friday Night
Showers likely, mainly after 1am. Cloudy, with a low around 56. Southeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 67. South southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 56. Southeast wind 3 to 8 mph.
Sunday
Partly sunny, with a high near 70. Southeast wind 3 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 56. Southeast wind 7 to 9 mph.
Monday
A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 69. South wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Monday Night
Showers likely and possibly a thunderstorm, then showers after 1am. Low around 54. Chance of precipitation is 80%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly sunny, with a high near 61. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castlewood SD
 44.72°N 97.02°W (Elev. 1683 ft)
Last Update:
11:22 am CDT Sep 24, 2026
Forecast Valid:
11am CDT Sep 24, 2026-6pm CDT Sep 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation