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.

Fair

70°F

21°C

Humidity 57%
Wind Speed S 14 mph
Barometer 30.00 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 1 Oct 11:53 pm CDT
Extended Forecast for

Castlewood SD

  • Overnight

    Overnight: Mostly clear, with a low around 59. South wind around 10 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. South wind 6 to 8 mph becoming west in the afternoon.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Calm wind becoming southeast around 6 mph after midnight.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. South wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 67. South wind 14 to 18 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 89. Breezy, with a south wind 17 to 22 mph, with gusts as high as 36 mph.

    High: 89 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60. Breezy, with a south wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, mainly before 1pm. Mostly sunny, with a high near 72. Breezy, with a south southwest wind 20 to 22 mph becoming west northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 59. South wind around 10 mph.
Thursday
Sunny, with a high near 84. South wind 6 to 8 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 60. Calm wind becoming southeast around 6 mph after midnight.
Friday
Sunny, with a high near 88. South wind 7 to 16 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 67. South wind 14 to 18 mph, with gusts as high as 30 mph.
Saturday
Mostly sunny, with a high near 89. Breezy, with a south wind 17 to 22 mph, with gusts as high as 36 mph.
Saturday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60. Breezy, with a south wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Sunday
A chance of showers, mainly before 1pm. Mostly sunny, with a high near 72. Breezy, with a south southwest wind 20 to 22 mph becoming west northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 42. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 66.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castlewood SD
 44.72°N 97.02°W (Elev. 1683 ft)
Last Update:
11:46 pm CDT Oct 1, 2025
Forecast Valid:
12am CDT Oct 2, 2025-6pm CDT Oct 8, 2025
 
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