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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown (KRYV)

Lat: 43.17°NLon: 88.72°WElev: 814ft.

Fair

26°F

-3°C

Humidity 98%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 9 Jan 7:35 pm CST
Extended Forecast for

Oconomowoc WI

  • Tonight

    Tonight: Rain and snow likely after 3am, becoming all snow after 5am. Increasing clouds, with a low around 28. Calm wind becoming east around 5 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 28 °F

    Partly Cloudy
    then
    Rain/Snow
    Likely

  • Saturday

    Saturday: Snow, mainly after 4pm. Patchy fog before 9am. High near 33. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 33 °F

    Snow and
    Patchy Fog

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 20. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 20 °F

    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. Southwest wind 5 to 10 mph.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40. West wind 5 to 10 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. Southwest wind 5 to 10 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain. Mostly cloudy, with a high near 43. Southwest wind around 10 mph.

    High: 43 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain and snow. Cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Rain and snow likely after 3am, becoming all snow after 5am. Increasing clouds, with a low around 28. Calm wind becoming east around 5 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow, mainly after 4pm. Patchy fog before 9am. High near 33. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 20. West wind around 15 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 30. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 22. Southwest wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 40. West wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 29. Southwest wind 5 to 10 mph.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 43. Southwest wind around 10 mph.
Tuesday Night
A chance of rain and snow. Cloudy, with a low around 25. Chance of precipitation is 40%.
Wednesday
A 40 percent chance of snow. Mostly cloudy, with a high near 29.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
A 20 percent chance of snow. Partly sunny, with a high near 26.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oconomowoc WI
 43.11°N 88.51°W (Elev. 860 ft)
Last Update:
7:36 pm CST Jan 9, 2026
Forecast Valid:
7pm CST Jan 9, 2026-6pm CST Jan 16, 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