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

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fog/Mist

37°F

3°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.73 in
Dewpoint 37°F (3°C)
Visibility 1.25 mi
Last update 28 Dec 3:55 am CST
Extended Forecast for

Merton WI

Wind Advisory December 28, 06:00pm until December 29, 06:00pm
Winter Weather Advisory December 28, 06:00pm until December 29, 12:00pm
Click here for hazard details and duration
Wind Advisory
Winter Weather Advisory

  • Overnight

    Overnight: A chance of drizzle. Areas of fog. Otherwise, cloudy, with a low around 37. East wind around 5 mph.

    Low: 37 °F

    Chance
    Drizzle and
    Areas Fog

  • Sunday

    Sunday: Rain, mainly after 9am. Areas of fog before noon. High near 46. East wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Rain and
    Areas Fog

  • Sunday Night

    Sunday Night: Rain before 8pm, then rain and snow likely between 8pm and 9pm, then snow after 9pm. Patchy blowing snow after 9pm. Low around 18. Windy, with a west wind 10 to 20 mph increasing to 20 to 30 mph in the evening. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 18 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow before 9am. Areas of blowing snow. High near 23. Wind chill values between zero and 5. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 23 °F

    Snow and
    Areas Blowing
    Snow

  • Monday Night

    Monday Night: Patchy blowing snow before 11pm. Partly cloudy, with a low around 8. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 8 °F

    Patchy
    Blowing Snow
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after noon. Partly sunny, with a high near 25. West wind around 10 mph.

    High: 25 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19. West wind around 10 mph.

    Low: 19 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25. Northwest wind 10 to 15 mph.

    High: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow
    then Partly
    Cloudy

Detailed Forecast

Overnight
A chance of drizzle. Areas of fog. Otherwise, cloudy, with a low around 37. East wind around 5 mph.
Sunday
Rain, mainly after 9am. Areas of fog before noon. High near 46. East wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain before 8pm, then rain and snow likely between 8pm and 9pm, then snow after 9pm. Patchy blowing snow after 9pm. Low around 18. Windy, with a west wind 10 to 20 mph increasing to 20 to 30 mph in the evening. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Monday
Snow before 9am. Areas of blowing snow. High near 23. Wind chill values between zero and 5. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday Night
Patchy blowing snow before 11pm. Partly cloudy, with a low around 8. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
A 20 percent chance of snow after noon. Partly sunny, with a high near 25. West wind around 10 mph.
Tuesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19. West wind around 10 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25. Northwest wind 10 to 15 mph.
Wednesday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 8.
New Year's Day
Mostly sunny, with a high near 15.
Thursday Night
Mostly clear, with a low around 5.
Friday
Mostly sunny, with a high near 22.
Friday Night
Partly cloudy, with a low around 14.
Saturday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merton WI
 43.14°N 88.32°W (Elev. 958 ft)
Last Update:
3:13 am CST Dec 28, 2025
Forecast Valid:
4am CST Dec 28, 2025-6pm CST Jan 3, 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