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 | 90% |
| Wind Speed | Calm |
| Barometer | 30.15 in (1020.5 mb) |
| Dewpoint | 52°F (11°C) |
| Visibility | 10.00 mi |
| Last update | 23 Aug 2:53 am CDT |
Extended Forecast for
7 Miles SSW Castlewood SD
Overnight

Low: 53 °F
Mostly Cloudy
Sunday

High: 81 °F
Mostly Sunny
Sunday Night
Low: 60 °F
Partly Cloudy
then Chance
ShowersMonday

High: 81 °F
Decreasing
CloudsMonday Night
Low: 62 °F
Partly Cloudy
then Slight
Chance
ShowersTuesday

High: 84 °F
Mostly Sunny
Tuesday Night

Low: 60 °F
Mostly Clear
Wednesday

High: 80 °F
Sunny
Wednesday Night

Low: 56 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a low around 53. Calm wind.
Sunday
Mostly sunny, with a high near 81. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Sunday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 60. South southeast wind around 8 mph. Chance of precipitation is 30%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 81. South wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 62. South wind 6 to 9 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 84. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 60. West northwest wind 7 to 14 mph.
Wednesday
Sunny, with a high near 80. Northwest wind 8 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly clear, with a low around 56. North northwest wind 6 to 11 mph becoming light north after midnight.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 57.
Friday
Mostly sunny, with a high near 81.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 40%.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 20%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
7 Miles SSW Castlewood SD
44.63°N 97.05°W (Elev. 1654 ft)
44.63°N 97.05°W (Elev. 1654 ft)
3:06 am CDT Aug 23, 2026
3am CDT Aug 23, 2026-6pm CDT Aug 29, 2026



