2025 Compare Climate & Weather:
Frederick, MD vs Chicago, IL

Highlights

On average, there are 189 sunny days per year in Chicago. Frederick averages 200 sunny days per year. The US average is 205 sunny days.

Chicago, Illinois gets 38.2 inches of rain, on average, per year. Frederick, Maryland gets 42.5 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. Frederick averages 23.1 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

Frederick, Maryland
Summer High: the July high is around 87.7 degrees
Winter Low: the January low is 23.3
Rain: averages 42.5 inches of rain a year
Snow: averages 23.1 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Frederick is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

Today's Weather - Frederick, MD

63°F

Today's Weather - Chicago, IL

47°F

Average Monthly High / Low (°F)

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

July is the hottest month for Frederick with an average high temperature of 87.7°, which ranks it as warmer than most places in Maryland. In Frederick, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Frederick are September, May and June.

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.

January has the coldest nighttime temperatures for Frederick with an average of 23.3°. This is colder than most places in Maryland.

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

In Frederick, there are 26.3 days annually when the high temperature is over 90°, which is hotter than most places in Maryland.

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

In Frederick, there are 100.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.

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 Frederick, there are 0.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

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

May is the wettest month in Frederick with 4.2 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.5 inches in Frederick means that it is drier than most places in Maryland.


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.

May is the rainiest month in Frederick with 11.3 days of rain, and October is the driest month with only 7.5 rainy days. There are 107.2 rainy days annually in Frederick, which is less rainy than most places in Maryland. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 23% 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 23.1 inches in Frederick means that it is snowier than most places in Maryland.

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

January is the snowiest month in Frederick with 8.6 inches of snow, and 6 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.