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

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Snow

34°F

1°C

Humidity 85%
Wind Speed N 20 G 29 mph
Barometer 30.09 in (1020.3 mb)
Dewpoint 30°F (-1°C)
Visibility 7.00 mi
Wind Chill23°F (-5°C)
Last update 19 Apr 3:53 am CDT
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: A slight chance of snow showers before 4am, then a chance of flurries after 4am. Mostly cloudy, with a steady temperature around 32. Northwest wind around 10 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Snow Showers

  • Sunday

    Sunday: Sunny, with a high near 45. North wind 8 to 10 mph.

    High: 45 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 26. North wind 6 to 10 mph becoming south southeast after midnight.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 68. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.

    High: 68 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. Southwest wind 6 to 11 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Northeast wind around 7 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. East southeast wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.

    High: 84 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. Breezy, with a south wind 23 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
A slight chance of snow showers before 4am, then a chance of flurries after 4am. Mostly cloudy, with a steady temperature around 32. Northwest wind around 10 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 45. North wind 8 to 10 mph.
Sunday Night
Mostly clear, with a low around 26. North wind 6 to 10 mph becoming south southeast after midnight.
Monday
Mostly sunny, with a high near 68. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.
Monday Night
Mostly clear, with a low around 39. Southwest wind 6 to 11 mph becoming north after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 73. Northeast wind around 7 mph.
Tuesday Night
Mostly clear, with a low around 50. East southeast wind 8 to 13 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 84. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. Breezy, with a south wind 23 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 73. Breezy. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow showers. Partly cloudy, with a low around 35. Breezy. Chance of precipitation is 30%.
Friday
A slight chance of rain and snow showers. Mostly sunny, with a high near 53. Breezy. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 30. Blustery.
Saturday
Mostly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
3:36 am CDT Apr 19, 2026
Forecast Valid:
3am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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