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.

Fair

86°F

30°C

Humidity 66%
Wind Speed SW 9 mph
Barometer 29.92 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 2 Sep 1:45 pm CDT
Extended Forecast for

Merton WI

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. West wind 5 to 10 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Scattered rain before 11pm, then a chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. North wind around 5 mph becoming calm. Chance of precipitation is 50%.

    Low: 69 °F

    Scattered
    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 84. East wind around 5 mph becoming west in the afternoon.

    High: 84 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall. Low around 67. East wind around 5 mph becoming calm after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 67 °F

    Chance
    T-storms then
    Heavy Rain

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 84. Calm wind becoming southeast around 5 mph.

    High: 84 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. East wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    High: 82 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. East wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. West wind 5 to 10 mph.
Tonight
Scattered rain before 11pm, then a chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. North wind around 5 mph becoming calm. Chance of precipitation is 50%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 84. East wind around 5 mph becoming west in the afternoon.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall. Low around 67. East wind around 5 mph becoming calm after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 84. Calm wind becoming southeast around 5 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. East wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 65. East wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.
Sunday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 63.
Labor Day
Partly sunny, with a high near 80.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merton WI
 43.14°N 88.29°W (Elev. 1010 ft)
Last Update:
1:34 pm CDT Sep 2, 2026
Forecast Valid:
2pm CDT Sep 2, 2026-6pm CDT Sep 8, 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