National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fog/Mist

42°F

6°C

Humidity 100%
Wind Speed N 7 mph
Barometer 29.75 in (1008.2 mb)
Dewpoint 42°F (6°C)
Visibility 6.00 mi
Wind Chill38°F (3°C)
Last update 14 Apr 1:53 am CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 40. North northwest wind around 6 mph becoming south southwest.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. Northwest wind 6 to 10 mph.

    High: 63 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. North wind 5 to 7 mph becoming light and variable after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Mostly sunny, with a high near 67. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 67 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Partly cloudy, with a low around 45. West southwest wind 6 to 8 mph becoming south southeast in the evening. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 78. South wind 9 to 18 mph, with gusts as high as 28 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 1am. Partly cloudy, with a low around 47. South wind 11 to 15 mph becoming east southeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 47 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 62. Breezy, with an east wind 16 to 23 mph becoming north northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%.

    High: 62 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain showers before 10pm, then a chance of snow showers. Mostly cloudy, with a low around 25. Blustery, with a north northwest wind 22 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.

    Low: 25 °F

    Blustery.
    Slight Chance
    Rain/Snow
    then Chance
    Snow Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 40. North northwest wind around 6 mph becoming south southwest.
Tuesday
Mostly cloudy, with a high near 63. Northwest wind 6 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 40. North wind 5 to 7 mph becoming light and variable after midnight.
Wednesday
A slight chance of showers after 1pm. Mostly sunny, with a high near 67. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 45. West southwest wind 6 to 8 mph becoming south southeast in the evening. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 78. South wind 9 to 18 mph, with gusts as high as 28 mph.
Thursday Night
A chance of showers after 1am. Partly cloudy, with a low around 47. South wind 11 to 15 mph becoming east southeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 62. Breezy, with an east wind 16 to 23 mph becoming north northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%.
Friday Night
A slight chance of rain showers before 10pm, then a chance of snow showers. Mostly cloudy, with a low around 25. Blustery, with a north northwest wind 22 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.
Saturday
A chance of snow showers, mainly before 1pm. Partly sunny, with a high near 39. Breezy. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 22. Blustery.
Sunday
Sunny, with a high near 49.
Sunday Night
Mostly clear, with a low around 29.
Monday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
1:57 am CDT Apr 14, 2026
Forecast Valid:
2am CDT Apr 14, 2026-6pm CDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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