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.

Fair

76°F

24°C

Humidity 45%
Wind Speed SE 3 mph
Barometer 29.85 in (1009.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 25 May 9:53 pm CDT
Extended Forecast for

Castlewood SD

  • Tonight

    Tonight: Increasing clouds, with a low around 58. South southeast wind 3 to 7 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny and hot, with a high near 92. South wind 9 to 13 mph, with gusts as high as 22 mph.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. South southeast wind 7 to 10 mph.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89. South southeast wind 5 to 10 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. East wind around 10 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 87. Southeast wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81. Southeast wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. Southeast wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 58. South southeast wind 3 to 7 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 92. South wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 57. South southeast wind 7 to 10 mph.
Wednesday
Sunny, with a high near 89. South southeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 56. East wind around 10 mph.
Thursday
Mostly sunny, with a high near 87. Southeast wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 56. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.
Friday
Partly sunny, with a high near 81. Southeast wind 8 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 55. Southeast wind 8 to 11 mph, with gusts as high as 21 mph.
Saturday
Partly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castlewood SD
 44.72°N 97.02°W (Elev. 1683 ft)
Last Update:
10:36 pm CDT May 25, 2026
Forecast Valid:
10pm CDT May 25, 2026-6pm CDT Jun 1, 2026
 
Forecast Discussion
 
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Additional Resources

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