2025 Compare Climate & Weather:
Mundelein, IL vs Green Bay, WI

Highlights

On average, there are 187 sunny days per year in Green Bay. Mundelein averages 187 sunny days per year. The US average is 205 sunny days.

Green Bay, Wisconsin gets 30.1 inches of rain, on average, per year. Mundelein, Illinois gets 36.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Green Bay averages 47.5 inches of snow per year. Mundelein averages 40.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Green Bay, Wisconsin
Summer High: the July high is around 80.2 degrees
Winter Low: the January low is 8.5
Rain: averages 30.1 inches of rain a year
Snow: averages 47.5 inches of snow a year

Mundelein, Illinois
Summer High: the July high is around 82 degrees
Winter Low: the January low is 14.2
Rain: averages 36.2 inches of rain a year
Snow: averages 40.6 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Green Bay is 6.5 (10=best), which means it is less comfortable than most places in Wisconsin.

The annual BestPlaces Comfort Index for Mundelein is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

Today's Weather - Mundelein, IL

44°F

Today's Weather - Green Bay, WI

42°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Mundelein / Green Bay

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

July is the hottest month for Green Bay with an average high temperature of 80.2°, which ranks it as cooler than most places in Wisconsin. In Green Bay, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Green Bay are August, June and July.

January has the coldest nighttime temperatures for Mundelein with an average of 14.2°. This is colder than most places in Illinois.

January has the coldest nighttime temperatures for Green Bay with an average of 8.5°. This is about average compared to other places in Wisconsin.

In Mundelein, there are 8.5 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Green Bay, there are 3.4 days annually when the high temperature is over 90°, which is cooler than most places in Wisconsin.

In Mundelein, there are 132.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Green Bay, there are 157.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Wisconsin.

In Mundelein, there are 9.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Green Bay, there are 18.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wisconsin.

May is the wettest month in Mundelein with 4.0 inches of rain, and the driest month is January with 1.8 inches. The wettest season is Autumn with 31% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 36.2 inches in Mundelein means that it is one of the driest places in Illinois.


June is the wettest month in Green Bay with 3.8 inches of rain, and the driest month is February with 1.1 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 30.1 inches in Green Bay means that it is one of the driest places in Wisconsin.

May is the rainiest month in Mundelein with 12.2 days of rain, and February is the driest month with only 8.4 rainy days. There are 120.2 rainy days annually in Mundelein, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

May is the rainiest month in Green Bay with 10.4 days of rain, and February is the driest month with only 7.3 rainy days. There are 111.8 rainy days annually in Green Bay, which is about average compared to other places in Wisconsin. The rainiest season is Summer when it rains 26% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 40.6 inches in Mundelein means that it is one of the snowiest places in Illinois.

An annual snowfall of 47.5 inches in Green Bay means that it is snowier than most places in Wisconsin.

January is the snowiest month in Mundelein with 12.2 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Green Bay with 12.3 inches of snow, and 6 months of the year have significant snowfall.