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.

Overcast

30°F

-1°C

Humidity 41%
Wind Speed Calm
Barometer 30.03 in (1019.3 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 13 Mar 5:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

Blizzard Warning March 15, 03:00am until March 15, 07:00pm
Winter Storm Warning March 14, 07:00pm until March 15, 03:00am
Click here for hazard details and duration
Blizzard Warning
Winter Storm Warning

  • Tonight

    Tonight: Snow likely, mainly after 5am. Mostly cloudy, with a low around 22. Calm wind becoming east around 6 mph in the evening. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 22 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: A chance of snow before 2pm, then a chance of snow after 3pm. Patchy blowing snow after 2pm. Cloudy, with a high near 33. Breezy, with an east southeast wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 50%.

    High: 33 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 1am. Low around 16. Blustery, with an east wind 18 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    Low: 16 °F

    Heavy Snow
    and Blowing
    Snow

  • Sunday

    Sunday: Snow, mainly before 1pm. Widespread blowing snow, mainly before 1pm. High near 23. Windy, with a north wind 31 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 23 °F

    Snow and
    Blowing Snow

  • Sunday Night

    Sunday Night: Areas of blowing snow before 2am. Partly cloudy, with a low around -4. Blustery, with a north northwest wind 18 to 28 mph, with gusts as high as 44 mph.

    Low: -4 °F

    Areas Blowing
    Snow and
    Blustery

  • Monday

    Monday: Sunny and cold, with a high near 8. North northwest wind around 16 mph, with gusts as high as 24 mph.

    High: 8 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around -8. Northwest wind 6 to 10 mph becoming south after midnight.

    Low: -8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow, mainly after 1pm. Partly sunny, with a high near 30. South wind 9 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.

    High: 30 °F

    Slight Chance
    Snow then
    Chance Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain, snow, and freezing rain before 1am. Mostly cloudy, with a low around 22. South wind 11 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    Low: 22 °F

    Slight Chance
    Wintry Mix

Detailed Forecast

Tonight
Snow likely, mainly after 5am. Mostly cloudy, with a low around 22. Calm wind becoming east around 6 mph in the evening. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Saturday
A chance of snow before 2pm, then a chance of snow after 3pm. Patchy blowing snow after 2pm. Cloudy, with a high near 33. Breezy, with an east southeast wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 50%.
Saturday Night
Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 1am. Low around 16. Blustery, with an east wind 18 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Sunday
Snow, mainly before 1pm. Widespread blowing snow, mainly before 1pm. High near 23. Windy, with a north wind 31 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
Areas of blowing snow before 2am. Partly cloudy, with a low around -4. Blustery, with a north northwest wind 18 to 28 mph, with gusts as high as 44 mph.
Monday
Sunny and cold, with a high near 8. North northwest wind around 16 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around -8. Northwest wind 6 to 10 mph becoming south after midnight.
Tuesday
A chance of snow, mainly after 1pm. Partly sunny, with a high near 30. South wind 9 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.
Tuesday Night
A slight chance of rain, snow, and freezing rain before 1am. Mostly cloudy, with a low around 22. South wind 11 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Partly cloudy, with a low around 32.
Friday
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
5:37 pm CDT Mar 13, 2026
Forecast Valid:
6pm CDT Mar 13, 2026-6pm CDT Mar 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