Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fog/Mist

60°F

16°C

Humidity 100%
Wind Speed S 8 mph
Barometer 30.19 in (1022.1 mb)
Dewpoint 60°F (16°C)
Visibility 2.50 mi
Last update 24 Sep 11:53 pm CDT
Extended Forecast for

4 Miles W Castlewood SD

  • Overnight

    Overnight: A slight chance of drizzle before 4am.  Areas of fog.  Otherwise, cloudy, with a low around 58. South wind 7 to 9 mph.

    Low: 58 °F

    Slight Chance
    Drizzle and
    Areas Fog

  • Friday

    Friday: Areas of fog.  Otherwise, mostly cloudy, with a high near 64. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 64 °F

    Areas Fog

  • Friday Night

    Friday Night: Showers likely, then showers and possibly a thunderstorm after 4am.  Low around 57. Southeast wind 11 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    Drizzle then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers between 7am and 1pm, then a chance of rain after 1pm.  Cloudy, with a high near 66. South southeast wind 11 to 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58. South southeast wind 3 to 8 mph.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 71. Southeast wind 3 to 8 mph.

    High: 71 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58. Southeast wind 8 to 10 mph.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers after 1pm.  Mostly cloudy, with a high near 69. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 30%.

    High: 69 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm.  Low around 58. South wind 13 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%.

    Low: 58 °F

    Showers

Detailed Forecast

Overnight
A slight chance of drizzle before 4am. Areas of fog. Otherwise, cloudy, with a low around 58. South wind 7 to 9 mph.
Friday
Areas of fog. Otherwise, mostly cloudy, with a high near 64. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
Showers likely, then showers and possibly a thunderstorm after 4am. Low around 57. Southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers between 7am and 1pm, then a chance of rain after 1pm. Cloudy, with a high near 66. South southeast wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 58. South southeast wind 3 to 8 mph.
Sunday
Partly sunny, with a high near 71. Southeast wind 3 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 58. Southeast wind 8 to 10 mph.
Monday
A chance of showers after 1pm. Mostly cloudy, with a high near 69. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Monday Night
Showers and possibly a thunderstorm. Low around 58. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Tuesday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 60. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 49. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 60. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Castlewood SD
 44.74°N 97.11°W (Elev. 1762 ft)
11:21 pm CDT Sep 24, 2026
12am CDT Sep 25, 2026-6pm CDT Oct 1, 2026
 
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