Oconomowoc

Waukesha County, Wisconsin, United States

Unlock Minute-by-Minute Forecast

See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.

Current Weather

14°

Overcast

Feels Like: 13°

Min: 14°

Max: 23°

The next few hours will be overcast, with today reaching 23°C and dropping to 12°C. The coming days will be mostly cloudy

Does this forecast seem accurate?

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Hourly Forecast

14° 14° 15° 17° 19° 20° 22° 22° 23° 23° 23° 22° 20° 18° 17° 16° 16° 15° 16° 15° 14° 14° 13° 12°
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
Today
Tomorrow

Daylight Hours

06:41

Sunrise

18:54

Sunset

12 hours 13 minutes of sunlight today

Moon

Waxing Crescent

12:46

Moonrise

20:51

Moonset

Daily Forecast

Today

14°
23°

Thursday

10°
21°

Friday

12°
24°

Saturday

10°
20°

Sunday

21°

Monday

24°

Tuesday

25°

Wednesday

25°

Thursday

14°
18°

Friday

15°
21°

Air Quality Data Available

Upgrade to access real-time air quality data for Oconomowoc.

UV Index

No protection needed
0 Low
Low Extreme

Humidity

77% Humid
Low High

Weather in Oconomowoc today, September 16, 2026

Cloud cover dominates in Oconomowoc on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. The first half of the day looks overcast, as cloud amounts reach about 100% around 06:00. Brighter weather, if it comes, waits until later.

The temperature range runs from about 14°C up to 23°C. Expect humidity between 50% and 89%, most humid near 06:00. Airflow remains manageable, reaching about 3.9 km/h around 17:00.

Expect persistent cloud later on, with amounts around 100% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 16.1 km on average, though it can drop toward 16.0 km in thicker cloud or showers. Expect sunrise at 06:41, sunset at 18:54, and 12 hours 13 minutes of sunlight today overall.

Taken together, overcast skies in Oconomowoc on September 16, 2026 favour indoor or covered options, with temperatures near 23°C.

Frequently asked questions about weather in Oconomowoc

How warm does it get in Oconomowoc?

The warmest month in Oconomowoc is July, with average high temperatures of 28°C. The average temperature during this period is around 23°C.

How cold does it get in Oconomowoc?

The coldest month in Oconomowoc is January, with average low temperatures of -8°C. The average temperature during this period is around -5°C.

What is the wettest time of year in Oconomowoc?

The wettest month in Oconomowoc is May, with an average of 104mm of precipitation.

What is the driest time of year in Oconomowoc?

The driest month in Oconomowoc is February, with an average of 41mm of precipitation.

View full climate insights for Oconomowoc →

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)