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

Heavy Precipitation in the West; Wintry Mix in the North; Fire Weather in the High Plains

Pacific moisture will continue to bring locally heavy coastal/lower elevation rain and heavy mountain snow to the West Coast and portions of the Intermountain West through Monday. A wintry mix will create hazardous travel across the northern Plains and Upper Midwest into early Monday. Dry, gusty winds are resulting in elevated to critical fire weather in the south/central High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Overcast

28°F

-2°C

Humidity 64%
Wind Speed SE 9 mph
Barometer 29.96 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 4 Jan 6:45 pm CST
Extended Forecast for

Oconomowoc Lake WI

  • Tonight

    Tonight: A chance of freezing rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 25. South wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 40%.

    Low: 25 °F

    Chance
    Freezing Rain
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 38. Southwest wind around 5 mph becoming calm in the afternoon.

    High: 38 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of snow before 1am, then a chance of rain or freezing rain between 1am and 3am, then a chance of rain after 3am. Cloudy, with a low around 30. Calm wind. Chance of precipitation is 30%.

    Low: 30 °F

    Cloudy then
    Chance Wintry
    Mix

  • Tuesday

    Tuesday: A 50 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 40. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 40 °F

    Chance Rain
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28. West wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34. South wind around 5 mph.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Partly sunny, with a high near 45. South wind around 5 mph becoming northwest in the afternoon.

    High: 45 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain

Detailed Forecast

Tonight
A chance of freezing rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 25. South wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 40%.
Monday
Mostly cloudy, with a high near 38. Southwest wind around 5 mph becoming calm in the afternoon.
Monday Night
A chance of snow before 1am, then a chance of rain or freezing rain between 1am and 3am, then a chance of rain after 3am. Cloudy, with a low around 30. Calm wind. Chance of precipitation is 30%.
Tuesday
A 50 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 40. Calm wind becoming northwest around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 28. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 43. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 34. South wind around 5 mph.
Thursday
A 20 percent chance of rain after noon. Partly sunny, with a high near 45. South wind around 5 mph becoming northwest in the afternoon.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 31.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oconomowoc Lake WI
 43.1°N 88.45°W (Elev. 860 ft)
Last Update:
7:37 pm CST Jan 4, 2026
Forecast Valid:
7pm CST Jan 4, 2026-6pm CST Jan 11, 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