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

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

50°F

10°C

Humidity 76%
Wind Speed NE 9 mph
Barometer 30.04 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 25 Apr 6:45 pm CDT
Extended Forecast for

Merton WI

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 42. Northeast wind 5 to 10 mph.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 62. East wind 5 to 10 mph.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46. Southeast wind around 10 mph.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Showers, with thunderstorms also possible after 4pm. High near 67. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Chance
    Showers then
    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers. Low around 49. Southeast wind around 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59. West wind around 15 mph, with gusts as high as 25 mph.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Northwest wind around 5 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. Northwest wind 5 to 10 mph.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 42. Northeast wind 5 to 10 mph.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 62. East wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 46. Southeast wind around 10 mph.
Monday
Showers, with thunderstorms also possible after 4pm. High near 67. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 1am, then a slight chance of showers. Low around 49. Southeast wind around 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Mostly cloudy, with a high near 59. West wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 41. Northwest wind around 5 mph.
Wednesday
Mostly sunny, with a high near 57. Northwest wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 54.
Thursday Night
Areas of frost. Otherwise, partly cloudy, with a low around 34.
Friday
Areas of frost. Otherwise, mostly sunny, with a high near 54.
Friday Night
Widespread frost. Otherwise, partly cloudy, with a low around 33.
Saturday
Areas of frost. Otherwise, mostly sunny, with a high near 59.
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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:
7:34 pm CDT Apr 25, 2026
Forecast Valid:
7pm CDT Apr 25, 2026-6pm CDT May 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation