Current conditions at
Watertown, Watertown Municipal Airport (KATY)
Lat: 44.9°NLon: 97.15°WElev: 1745ft.
Fog/Mist
39°F
4°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 29.90 in (1014.2 mb) |
| Dewpoint | 38°F (3°C) |
| Visibility | 1.75 mi |
| Last update | 18 Mar 9:53 pm CDT |
Extended Forecast for
4 Miles ESE Castlewood SD
Tonight
Low: 31 °F
Mostly Cloudy
then Patchy
FogThursday
High: 57 °F
Dense
Freezing Fog
and Areas Fog
then Mostly
SunnyThursday Night

Low: 38 °F
Partly Cloudy
Friday

High: 64 °F
Mostly Sunny
Friday Night

Low: 39 °F
Partly Cloudy
Saturday

High: 70 °F
Mostly Sunny
Saturday Night

Low: 29 °F
Mostly Cloudy
Sunday

High: 40 °F
Partly Sunny
Sunday Night

Low: 22 °F
Partly Cloudy
Detailed Forecast
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 31. Light and variable wind.
Thursday
Areas of fog between 9am and noon. Widespread dense freezing fog, mainly before 8am. Otherwise, partly sunny, with a high near 57. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 38. Southwest wind around 10 mph.
Friday
Mostly sunny, with a high near 64. West northwest wind 8 to 15 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 39. Northwest wind 8 to 10 mph becoming south southeast after midnight.
Saturday
Mostly sunny, with a high near 70. South southwest wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 29. North northeast wind 15 to 18 mph, with gusts as high as 26 mph.
Sunday
Partly sunny, with a high near 40. North wind 16 to 18 mph.
Sunday Night
Partly cloudy, with a low around 22. North wind 8 to 14 mph becoming east southeast after midnight.
Monday
Mostly sunny, with a high near 47. Breezy.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly cloudy, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 59. Breezy.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles ESE Castlewood SD
44.72°N 96.96°W (Elev. 1749 ft)
44.72°N 96.96°W (Elev. 1749 ft)
9:36 pm CDT Mar 18, 2026
9pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026


