2025 Compare Climate & Weather:
Waukegan, IL vs Buffalo Grove, IL

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Highlights

On average, there are 187 sunny days per year in Buffalo Grove. Waukegan averages 188 sunny days per year. The US average is 205 sunny days.

Buffalo Grove, Illinois gets 36.2 inches of rain, on average, per year. Waukegan, Illinois gets 35.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Buffalo Grove averages 36 inches of snow per year. Waukegan averages 41 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Buffalo Grove, Illinois
Summer High: the July high is around 83 degrees
Winter Low: the January low is 16.7
Rain: averages 36.2 inches of rain a year
Snow: averages 36 inches of snow a year

Waukegan, Illinois
Summer High: the July high is around 81.4 degrees
Winter Low: the January low is 15.1
Rain: averages 35.8 inches of rain a year
Snow: averages 41 inches of snow a year

BestPlaces Comfort Index

Buffalo Grove

The annual BestPlaces Comfort Index for Buffalo Grove is 6.9 (10=best), which means it is less comfortable than most places in Illinois.

6.9 / 10

June, September and August are the most pleasant months in Buffalo Grove, while January and December are the least comfortable months.

Waukegan

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

6.8 / 10

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

Average Monthly High / Low (°F)

Month	Waukegan, IL	Buffalo Grove, IL
January	30° / 15°	32° / 17°
February	34° / 18°	36° / 20°
March	44° / 27°	46° / 29°
April	56° / 37°	58° / 38°
May	67° / 47°	69° / 48°
June	77° / 57°	79° / 58°
July	81° / 63°	83° / 64°
August	80° / 62°	82° / 63°
September	72° / 54°	75° / 55°
October	60° / 42°	62° / 43°
November	47° / 32°	49° / 33°
December	34° / 20°	36° / 21°

Hot, Freezing, Rainy, Snowy Days: Waukegan / Buffalo Grove

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	29 / 28	10 / 10	8 / 7
February	0 / 0	26 / 24	8 / 8	5 / 5
March	0 / 0	22 / 21	9 / 11	3 / 4
April	0 / 0	8 / 7	12 / 12	1 / 1
May	0 / 1	1 / 0	12 / 12	0 / 0
June	2 / 3	0 / 0	10 / 10	0 / 0
July	4 / 5	0 / 0	9 / 10	0 / 0
August	2 / 4	0 / 0	9 / 10	0 / 0
September	0 / 1	0 / 0	9 / 10	0 / 0
October	0 / 0	4 / 3	9 / 10	0 / 0
November	0 / 0	15 / 14	10 / 11	2 / 2
December	0 / 0	27 / 26	10 / 11	6 / 6

July is the hottest month for Waukegan with an average high temperature of 81.4°, which ranks it as one of the coolest places in Illinois. In Waukegan, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Waukegan are June, August and July.

July is the hottest month for Buffalo Grove with an average high temperature of 83.0°, which ranks it as one of the coolest places in Illinois. In Buffalo Grove, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Buffalo Grove are June, September and August.

January has the coldest nighttime temperatures for Waukegan with an average of 15.1°. This is colder than most places in Illinois.

January has the coldest nighttime temperatures for Buffalo Grove with an average of 16.7°. This is about average compared to other places in Illinois.

In Waukegan, there are 8.1 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Buffalo Grove, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Waukegan, there are 130.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Buffalo Grove, there are 122.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In Waukegan, there are 8.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Buffalo Grove, there are 6.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

May is the wettest month in Waukegan with 4.0 inches of rain, and the driest month is January with 1.7 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 35.8 inches in Waukegan means that it is one of the driest places in Illinois.

August is the wettest month in Buffalo Grove with 4.3 inches of rain, and the driest month is February with 1.6 inches. The wettest season is Autumn with 32% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 36.2 inches in Buffalo Grove means that it is one of the driest places in Illinois.

May is the rainiest month in Waukegan with 11.8 days of rain, and February is the driest month with only 7.7 rainy days. There are 117.4 rainy days annually in Waukegan, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% chance of a rainy day.

April is the rainiest month in Buffalo Grove with 12.2 days of rain, and February is the driest month with only 8.3 rainy days. There are 125.2 rainy days annually in Buffalo Grove, which is one of the rainiest places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 41.0 inches in Waukegan means that it is one of the snowiest places in Illinois.

An annual snowfall of 36.0 inches in Buffalo Grove means that it is one of the snowiest places in Illinois.

January is the snowiest month in Waukegan with 13.4 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Buffalo Grove with 11.3 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Waukegan 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More

| Reply

NC For Me · Apex, NC

re:

Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More

| Reply

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Reviews for Buffalo Grove 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More

| Reply

NC For Me · Apex, NC

re:

Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More

| Reply

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2025 Compare Climate & Weather:
Waukegan, IL vs Buffalo Grove, IL

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Waukegan / Buffalo Grove

January has the coldest nighttime temperatures for Waukegan with an average of 15.1°. This is colder than most places in Illinois.

January has the coldest nighttime temperatures for Buffalo Grove with an average of 16.7°. This is about average compared to other places in Illinois.

In Waukegan, there are 8.1 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Buffalo Grove, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

An annual snowfall of 41.0 inches in Waukegan means that it is one of the snowiest places in Illinois.

An annual snowfall of 36.0 inches in Buffalo Grove means that it is one of the snowiest places in Illinois.

January is the snowiest month in Waukegan with 13.4 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Buffalo Grove with 11.3 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Waukegan 2 Reviews

Reviews for Buffalo Grove 2 Reviews

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Zips In Waukegan, Illinois

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2025 Compare Climate & Weather:Waukegan, IL vs Buffalo Grove, IL

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Waukegan / Buffalo Grove

January has the coldest nighttime temperatures for Waukegan with an average of 15.1°. This is colder than most places in Illinois.January has the coldest nighttime temperatures for Buffalo Grove with an average of 16.7°. This is about average compared to other places in Illinois.

In Waukegan, there are 8.1 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.In Buffalo Grove, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

An annual snowfall of 41.0 inches in Waukegan means that it is one of the snowiest places in Illinois.An annual snowfall of 36.0 inches in Buffalo Grove means that it is one of the snowiest places in Illinois.

January is the snowiest month in Waukegan with 13.4 inches of snow, and 6 months of the year have significant snowfall.January is the snowiest month in Buffalo Grove with 11.3 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Waukegan 2 Reviews

Reviews for Buffalo Grove 2 Reviews

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Zips In Waukegan, Illinois

Zips In BUFFALO GROVE, ILLINOIS

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2025 Compare Climate & Weather:
Waukegan, IL vs Buffalo Grove, IL

January has the coldest nighttime temperatures for Waukegan with an average of 15.1°. This is colder than most places in Illinois.

January has the coldest nighttime temperatures for Buffalo Grove with an average of 16.7°. This is about average compared to other places in Illinois.

In Waukegan, there are 8.1 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Buffalo Grove, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

An annual snowfall of 41.0 inches in Waukegan means that it is one of the snowiest places in Illinois.

An annual snowfall of 36.0 inches in Buffalo Grove means that it is one of the snowiest places in Illinois.

January is the snowiest month in Waukegan with 13.4 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Buffalo Grove with 11.3 inches of snow, and 6 months of the year have significant snowfall.