2025 Compare Climate & Weather:
Eureka, CA vs Chicago, IL

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Highlights

On average, there are 189 sunny days per year in Chicago. Eureka averages 179 sunny days per year. The US average is 205 sunny days.

Chicago, Illinois gets 38.2 inches of rain, on average, per year. Eureka, California gets 45.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chicago averages 35.1 inches of snow per year. Eureka averages 0.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chicago, Illinois
Summer High: the July high is around 83.9 degrees
Winter Low: the January low is 19.2
Rain: averages 38.2 inches of rain a year
Snow: averages 35.1 inches of snow a year

Eureka, California
Summer High: the July high is around 65 degrees
Winter Low: the January low is 41.1
Rain: averages 45.7 inches of rain a year
Snow: averages 0.5 inches of snow a year

BestPlaces Comfort Index

Chicago

The annual BestPlaces Comfort Index for Chicago is 7.0 (10=best), which means it is about average compared to other places in Illinois.

7 / 10

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

Eureka

The annual BestPlaces Comfort Index for Eureka is 7.6 (10=best), which means it is less comfortable than most places in California.

7.6 / 10

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

Average Monthly High / Low (°F)

Month	Eureka, CA	Chicago, IL
January	56° / 41°	32° / 19°
February	57° / 42°	37° / 23°
March	57° / 42°	47° / 31°
April	59° / 44°	58° / 41°
May	61° / 47°	69° / 51°
June	63° / 50°	79° / 61°
July	65° / 52°	84° / 68°
August	66° / 53°	82° / 67°
September	66° / 50°	75° / 59°
October	64° / 47°	63° / 47°
November	59° / 43°	49° / 36°
December	55° / 41°	36° / 24°

Hot, Freezing, Rainy, Snowy Days: Eureka / Chicago

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	2 / 27	17 / 10	0 / 7
February	0 / 0	2 / 23	15 / 8	0 / 5
March	0 / 0	1 / 17	16 / 11	0 / 4
April	0 / 0	0 / 3	13 / 11	0 / 1
May	0 / 1	0 / 0	9 / 12	0 / 0
June	0 / 3	0 / 0	5 / 10	0 / 0
July	0 / 6	0 / 0	2 / 10	0 / 0
August	0 / 4	0 / 0	3 / 10	0 / 0
September	0 / 1	0 / 0	4 / 9	0 / 0
October	0 / 0	0 / 1	8 / 10	0 / 0
November	0 / 0	1 / 10	15 / 11	0 / 2
December	0 / 0	3 / 24	17 / 11	0 / 6

August is the hottest month for Eureka with an average high temperature of 66.1°, which ranks it as one of the coolest places in California. In Eureka, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Eureka are August, September and July.

July is the hottest month for Chicago with an average high temperature of 83.9°, which ranks it as cooler than most places in Illinois. In Chicago, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chicago are June, September and August.

December has the coldest nighttime temperatures for Eureka with an average of 40.5°. This is warmer than most places in California.

January has the coldest nighttime temperatures for Chicago with an average of 19.2°. This is warmer than most places in Illinois.

In Eureka, there are 0.2 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Chicago, there are 13.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Eureka, there are 9.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Chicago, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Eureka, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

In Chicago, there are 4.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

December is the wettest month in Eureka with 8.8 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Spring with 50% of yearly precipitation and 3% occurs in Autumn, which is the driest season. The annual rainfall of 45.7 inches in Eureka means that it is one of the wettest places in California.

August is the wettest month in Chicago with 4.2 inches of rain, and the driest month is January with 2.0 inches. The wettest season is Autumn with 31% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 38.2 inches in Chicago means that it is drier than most places in Illinois.

December is the rainiest month in Eureka with 17.0 days of rain, and July is the driest month with only 2.4 rainy days. There are 123.9 rainy days annually in Eureka, which is one of the rainiest places in California. The rainiest season is Spring when it rains 39% of the time and the driest is Autumn with only a 8% chance of a rainy day.

May is the rainiest month in Chicago with 11.5 days of rain, and February is the driest month with only 8.4 rainy days. There are 124.8 rainy days annually in Chicago, which is one of the rainiest places in Illinois. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 24% chance of a rainy day.

An annual snowfall of 0.5 inches in Eureka means that it is snowier than most places in California.

An annual snowfall of 35.1 inches in Chicago means that it is one of the snowiest places in Illinois.

February is the snowiest month in Eureka with 0.3 inches of snow, and no months of the year have significant snowfall.

January is the snowiest month in Chicago with 11.0 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 Eureka 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 Chicago 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

Start Your Review of Chicago

See all reviews

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2025 Compare Climate & Weather:
Eureka, CA vs Chicago, IL

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Eureka / Chicago

December has the coldest nighttime temperatures for Eureka with an average of 40.5°. This is warmer than most places in California.

January has the coldest nighttime temperatures for Chicago with an average of 19.2°. This is warmer than most places in Illinois.

In Eureka, there are 0.2 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Chicago, there are 13.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Eureka, there are 9.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Chicago, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Eureka, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

In Chicago, there are 4.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

An annual snowfall of 0.5 inches in Eureka means that it is snowier than most places in California.

An annual snowfall of 35.1 inches in Chicago means that it is one of the snowiest places in Illinois.

February is the snowiest month in Eureka with 0.3 inches of snow, and no months of the year have significant snowfall.

January is the snowiest month in Chicago with 11.0 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Eureka 2 Reviews

Reviews for Chicago 2 Reviews

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2025 Compare Climate & Weather:Eureka, CA vs Chicago, IL

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Eureka / Chicago

December has the coldest nighttime temperatures for Eureka with an average of 40.5°. This is warmer than most places in California.January has the coldest nighttime temperatures for Chicago with an average of 19.2°. This is warmer than most places in Illinois.

In Eureka, there are 0.2 days annually when the high temperature is over 90°, which is one of the coolest places in California.In Chicago, there are 13.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Eureka, there are 9.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.In Chicago, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Eureka, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.In Chicago, there are 4.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

An annual snowfall of 0.5 inches in Eureka means that it is snowier than most places in California.An annual snowfall of 35.1 inches in Chicago means that it is one of the snowiest places in Illinois.

February is the snowiest month in Eureka with 0.3 inches of snow, and no months of the year have significant snowfall.January is the snowiest month in Chicago with 11.0 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Eureka 2 Reviews

Reviews for Chicago 2 Reviews

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Zips In Eureka, California

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2025 Compare Climate & Weather:
Eureka, CA vs Chicago, IL

December has the coldest nighttime temperatures for Eureka with an average of 40.5°. This is warmer than most places in California.

January has the coldest nighttime temperatures for Chicago with an average of 19.2°. This is warmer than most places in Illinois.

In Eureka, there are 0.2 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Chicago, there are 13.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Eureka, there are 9.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Chicago, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Eureka, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

In Chicago, there are 4.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

An annual snowfall of 0.5 inches in Eureka means that it is snowier than most places in California.

An annual snowfall of 35.1 inches in Chicago means that it is one of the snowiest places in Illinois.

February is the snowiest month in Eureka with 0.3 inches of snow, and no months of the year have significant snowfall.

January is the snowiest month in Chicago with 11.0 inches of snow, and 6 months of the year have significant snowfall.