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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

30°F

-1°C

Humidity 82%
Wind Speed S 3 mph
Barometer 30.05 in (1019.5 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 12 Feb 9:53 pm CST
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, sunny, with a high near 51. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 51 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. South wind around 6 mph.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. South southwest wind 5 to 9 mph becoming west northwest in the afternoon.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. West northwest wind around 6 mph becoming light and variable.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 56. South southwest wind 5 to 11 mph.

    High: 56 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. South wind 8 to 10 mph becoming north after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 52. North northeast wind 8 to 10 mph becoming east in the afternoon.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. East southeast wind around 9 mph.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 26. Calm wind.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 51. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 28. South wind around 6 mph.
Saturday
Sunny, with a high near 53. South southwest wind 5 to 9 mph becoming west northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 29. West northwest wind around 6 mph becoming light and variable.
Sunday
Partly sunny, with a high near 56. South southwest wind 5 to 11 mph.
Sunday Night
Mostly cloudy, with a low around 33. South wind 8 to 10 mph becoming north after midnight.
Washington's Birthday
Sunny, with a high near 52. North northeast wind 8 to 10 mph becoming east in the afternoon.
Monday Night
Partly cloudy, with a low around 33. East southeast wind around 9 mph.
Tuesday
A slight chance of rain after noon. Mostly cloudy, with a high near 50. Chance of precipitation is 20%.
Tuesday Night
Rain and snow likely. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Thursday
A slight chance of snow. Partly sunny, with a high near 33. Chance of precipitation is 20%.
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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:
9:36 pm CST Feb 12, 2026
Forecast Valid:
10pm CST Feb 12, 2026-6pm CST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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