Waukesha County, WI Climate

Waukesha County, Wisconsin enjoys a four-season climate that is characterized by warm summers and cold winters. The average high in the summer months is around 80°F, while winter temperatures generally range between 20-30°F. Precipitation amounts are generally moderate throughout the year, with occasional light snowfall in the winter and thunderstorms during the summer months. Waukesha County experiences changes in seasons throughout the year, making it a perfect destination for outdoor activities and exploration all year round.

Waukesha County, Wisconsin gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Waukesha County averages 43 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 190 sunny days per year in Waukesha County. The US average is 205 sunny days.

Waukesha County gets some kind of precipitation, on average, 121 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 82 degrees
Winter Low: the January low is 11
Rain: averages 35 inches of rain a year
Snow: averages 43 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Waukesha is 6.6 (10=best), which means it is more comfortable than most places in Wisconsin.

9.2 Summer - 4.1 Winter

August, June and July are the most pleasant months in Waukesha, while January and December are the least comfortable months.

Climate	Waukesha, Wisconsin	United States
	Unlock	38.1 in.
	43.0 in.	Unlock
	Unlock	106.2 days
	190 days	Unlock
	82.0°	85.8°
	Unlock	21.7°
	6.6	Unlock
	Unlock	4.3
	894 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Waukesha with an average high temperature of 82.0°, which ranks it as warmer than most places in Wisconsin. In Waukesha, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Waukesha are June, August and July.

In Waukesha, there are 6.3 days annually when the high temperature is over 90°, which is hotter than most places in Wisconsin.

January has the coldest nighttime temperatures for Waukesha with an average of 11.1°. This is warmer than most places in Wisconsin.

In Waukesha, there are 149.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Wisconsin.

In Waukesha, there are 14.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wisconsin.

The humidity is usually comfortable in Waukesha but some summer days can be muggy. July is the most humid month, though it is still relatively mild compared to many other places. The most humid months are July, August and June.

June is the wettest month in Waukesha with 4.4 inches of rain, and the driest month is January with 1.5 inches. The wettest season is Autumn with 36% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 35.2 inches in Waukesha means that it is wetter than most places in Wisconsin.

May is the rainiest month in Waukesha with 12.4 days of rain, and February is the driest month with only 8.4 rainy days. There are 121.4 rainy days annually in Waukesha, which is rainier than most places in Wisconsin. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 43.0 inches in Waukesha means that it is about average compared to other places in Wisconsin. January is the snowiest month in Waukesha with 12.4 inches of snow, and 6 months of the year have significant snowfall.

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