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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Overcast

10°F

-12°C

Humidity 67%
Wind Speed W 6 mph
Barometer 30.02 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 1 Jan 10:45 am CST
Extended Forecast for

Merton WI

  • New Year's Day

    New Year's Day: Snow, mainly before 5pm. High near 16. Wind chill values between zero and 5. West wind 5 to 10 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 16 °F

    Snow

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 8. Wind chill values between zero and 5. West wind around 5 mph.

    Low: 8 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 19. Wind chill values between zero and 10. Northwest wind 5 to 10 mph.

    High: 19 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 11. West wind around 5 mph becoming calm in the evening.

    Low: 11 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 23. Calm wind becoming west around 5 mph.

    High: 23 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 7. West wind around 5 mph becoming calm.

    Low: 7 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 25. Calm wind becoming south around 5 mph.

    High: 25 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 20. South wind around 5 mph.

    Low: 20 °F

    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

Detailed Forecast

New Year's Day
Snow, mainly before 5pm. High near 16. Wind chill values between zero and 5. West wind 5 to 10 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 8. Wind chill values between zero and 5. West wind around 5 mph.
Friday
Sunny, with a high near 19. Wind chill values between zero and 10. Northwest wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 11. West wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 23. Calm wind becoming west around 5 mph.
Saturday Night
Mostly clear, with a low around 7. West wind around 5 mph becoming calm.
Sunday
Increasing clouds, with a high near 25. Calm wind becoming south around 5 mph.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 20. South wind around 5 mph.
Monday
Partly sunny, with a high near 36.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Mostly cloudy, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merton WI
 43.14°N 88.32°W (Elev. 958 ft)
Last Update:
10:08 am CST Jan 1, 2026
Forecast Valid:
11am CST Jan 1, 2026-6pm CST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation