Wisconsin · NWS MKX office

Oconomowoc, WI weather

It is 52°F and clear at Waukesha County Airport as of Oct 28, 3:55 AM CDT. Overnight: Mostly Clear, low near 52°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 3:32 AM CDT.

Updated Oct 28, 4:30 AM CDT (snapshot)

Current conditions

Temperature

52°F

Clear

Wind

SSW 5 mph

Humidity 94% · dew point 50°F

Pressure · visibility

30.17 inHg

Visibility 10 mi

Observed at Waukesha County Airport (KUES), Oct 28, 3:55 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Oconomowoc forecast zone right now.

Around the NWS MKX forecast area

No active alerts in zones served by the MKX office near Oconomowoc.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Wisconsin.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Oconomowoc (local time)
TimeTempForecastPrecip. chanceWind
Wed 6 AM48°FSunny1%S 5 mph
Wed 7 AM48°FSunny0%S 5 mph
Wed 8 AM50°FSunny0%S 5 mph
Wed 9 AM54°FSunny0%S 5 mph
Wed 10 AM60°FSunny0%S 5 mph
Wed 11 AM64°FSunny0%S 5 mph
Wed 12 PM68°FSunny0%S 10 mph
Wed 1 PM71°FSunny0%S 10 mph
Wed 2 PM72°FSunny0%S 10 mph
Wed 3 PM72°FSunny1%S 10 mph
Wed 4 PM72°FSunny1%S 10 mph
Wed 5 PM70°FSunny1%S 10 mph
Wed 6 PM67°FMostly Clear3%S 10 mph
Wed 7 PM64°FMostly Clear5%S 10 mph
Wed 8 PM63°FMostly Clear5%S 10 mph
Wed 9 PM63°FMostly Clear6%S 10 mph
Wed 10 PM63°FPartly Cloudy7%S 10 mph
Wed 11 PM63°FPartly Cloudy8%S 15 mph
Thu 12 AM63°FSlight Chance Rain Showers16%S 15 mph
Thu 1 AM63°FSlight Chance Showers And Thunderstorms23%SW 10 mph
Thu 2 AM62°FChance Showers And Thunderstorms38%SW 10 mph
Thu 3 AM61°FChance Showers And Thunderstorms53%SW 10 mph
Thu 4 AM60°FChance Rain Showers34%SW 10 mph
Thu 5 AM59°FSlight Chance Rain Showers15%SW 10 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Oconomowoc can differ.

7-day forecast

Overnight

Low 52°F

Mostly clear, with a low around 52. South wind 0 to 5 mph.

Wednesday

High 73°F·Low 57°F

Sunny, with a high near 73. South wind 5 to 10 mph.

Wednesday Night: A slight chance of rain showers between midnight and 1am, then a slight chance of showers and thunderstorms between 1am and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 67°F·Low 38°F

Mostly sunny, with a high near 67. West wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.

Thursday Night: Mostly clear, with a low around 38. Northwest wind 0 to 5 mph.

Friday

High 61°F·Low 44°F

Partly sunny, with a high near 61. East wind 0 to 5 mph.

Friday Night: Mostly cloudy, with a low around 44. East wind 0 to 5 mph.

Saturday

High 63°F·Low 47°F

A chance of rain showers after 7am. Mostly cloudy, with a high near 63. East wind around 5 mph. Chance of precipitation is 30%.

Saturday Night: A slight chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 20%.

Sunday

High 66°F·Low 49°F

A chance of rain showers. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.

Sunday Night: A slight chance of rain showers before midnight. Mostly cloudy, with a low around 49. Chance of precipitation is 20%.

Monday

High 66°F·Low 50°F

A chance of rain showers. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.

Tuesday

High 64°F

A chance of rain showers. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.

Nearby cities

Larger cities in the area

Other cities in Waukesha County

See every city we cover in Wisconsin, or check all active alerts.

About this forecast

Forecast office
Oconomowoc is served by the National Weather Service MKX forecast office, forecast zone WIZ065, county zone WIC133.
Location used
The Census Bureau's internal point for Oconomowoc (43.1010, -88.4951), in Waukesha County. Population: 20,002 (2024 estimate), number 42 of the 42 Wisconsin cities on this site.
Radar
Nearest NWS radar: KMKX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/43.101,-88.4951 (forecast issued Oct 28, 3:32 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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