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

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

43°F

6°C

Humidity 49%
Wind Speed SW 10 mph
Barometer 29.92 in (1015.0 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 12 Jan 3:53 pm CST
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 48. Southwest wind around 8 mph.

    High: 48 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. West wind 8 to 17 mph, with gusts as high as 29 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42. Breezy, with a west northwest wind 16 to 23 mph, with gusts as high as 37 mph.

    High: 42 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 13. Blustery, with a north wind 16 to 20 mph, with gusts as high as 31 mph.

    Low: 13 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 23. North wind 6 to 16 mph, with gusts as high as 28 mph.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13. Light and variable wind becoming south 5 to 10 mph after midnight.

    Low: 13 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 36. Breezy, with a south wind 11 to 16 mph becoming west northwest 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 40%.

    High: 36 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow likely, mainly after midnight. Patchy blowing snow after 2am. Mostly cloudy, with a low around 16. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.

    Low: 16 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow likely, mainly before noon. Patchy blowing snow before noon. Mostly cloudy, with a high near 24. Blustery, with a north northwest wind 22 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 60%.

    High: 24 °F

    Snow Likely
    and Patchy
    Blowing Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 48. Southwest wind around 8 mph.
Tonight
Mostly cloudy, with a low around 34. West wind 8 to 17 mph, with gusts as high as 29 mph.
Tuesday
Partly sunny, with a high near 42. Breezy, with a west northwest wind 16 to 23 mph, with gusts as high as 37 mph.
Tuesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 13. Blustery, with a north wind 16 to 20 mph, with gusts as high as 31 mph.
Wednesday
Sunny, with a high near 23. North wind 6 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 13. Light and variable wind becoming south 5 to 10 mph after midnight.
Thursday
A chance of snow. Mostly cloudy, with a high near 36. Breezy, with a south wind 11 to 16 mph becoming west northwest 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 40%.
Thursday Night
Snow likely, mainly after midnight. Patchy blowing snow after 2am. Mostly cloudy, with a low around 16. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.
Friday
Snow likely, mainly before noon. Patchy blowing snow before noon. Mostly cloudy, with a high near 24. Blustery, with a north northwest wind 22 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 60%.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 1. Blustery. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 11.
Saturday Night
Mostly cloudy, with a low around -2.
Sunday
Mostly sunny, with a high near 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:
4:36 pm CST Jan 12, 2026
Forecast Valid:
4pm CST Jan 12, 2026-6pm CST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation