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

77°F

25°C

Humidity 83%
Wind Speed SW 8 mph
Barometer 29.94 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Sep 1:45 pm CDT
Extended Forecast for

Oconomowoc WI

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 84. South wind around 5 mph.

    High: 84 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Patchy fog between 2am and 5am. Otherwise, increasing clouds, with a low around 69. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Mostly Cloudy
    then Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: Showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 5pm. Patchy fog between 7am and 8am. High near 88. Southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Showers and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 81. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 81. Calm wind becoming east around 5 mph in the morning.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 84. South wind around 5 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Patchy fog between 2am and 5am. Otherwise, increasing clouds, with a low around 69. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 5pm. Patchy fog between 7am and 8am. High near 88. Southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm.
Saturday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 81. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 81. Calm wind becoming east around 5 mph in the morning.
Sunday Night
Partly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening.
Labor Day
Mostly sunny, with a high near 81.
Monday Night
Mostly cloudy, with a low around 63.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 83.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oconomowoc WI
 43.11°N 88.51°W (Elev. 860 ft)
Last Update:
1:52 pm CDT Sep 3, 2026
Forecast Valid:
2pm CDT Sep 3, 2026-6pm CDT Sep 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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