2025 Compare Climate & Weather:
Granite City, IL vs Champaign, IL

Highlights

On average, there are 194 sunny days per year in Champaign. Granite City averages 204 sunny days per year. The US average is 205 sunny days.

Champaign, Illinois gets 40.7 inches of rain, on average, per year. Granite City, Illinois gets 41.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Champaign averages 20.3 inches of snow per year. Granite City averages 14.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Champaign, Illinois
Summer High: the July high is around 84.4 degrees
Winter Low: the January low is 16.6
Rain: averages 40.7 inches of rain a year
Snow: averages 20.3 inches of snow a year

Granite City, Illinois
Summer High: the July high is around 88.4 degrees
Winter Low: the January low is 22.4
Rain: averages 41.8 inches of rain a year
Snow: averages 14.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Champaign is 7.1 (10=best), which means it is more comfortable than most places in Illinois.

The annual BestPlaces Comfort Index for Granite City is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

Today's Weather - Granite City, IL

51°F

Today's Weather - Champaign, IL

48°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Granite City / Champaign

July is the hottest month for Granite City with an average high temperature of 88.4°, which ranks it as one of the hottest places in Illinois. In Granite City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Granite City are May, September and June.

July is the hottest month for Champaign with an average high temperature of 84.4°, which ranks it as cooler than most places in Illinois. In Champaign, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Champaign are September, May and June.

January has the coldest nighttime temperatures for Granite City with an average of 22.4°. This is one of the warmest places in Illinois.

January has the coldest nighttime temperatures for Champaign with an average of 16.6°. This is about average compared to other places in Illinois.

In Granite City, there are 34.6 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

In Champaign, there are 15.1 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Granite City, there are 93.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Champaign, there are 124.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In Granite City, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

In Champaign, there are 6.5 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 Granite City with 5.1 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 29% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 41.8 inches in Granite City means that it is wetter than most places in Illinois.


July is the wettest month in Champaign with 4.7 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 40.7 inches in Champaign means that it is wetter than most places in Illinois.

May is the rainiest month in Granite City with 11.3 days of rain, and September is the driest month with only 6.8 rainy days. There are 103.3 rainy days annually in Granite City, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

May is the rainiest month in Champaign with 11.5 days of rain, and September is the driest month with only 7.1 rainy days. There are 111.0 rainy days annually in Champaign, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 14.8 inches in Granite City means that it is less snowy than most places in Illinois.

An annual snowfall of 20.3 inches in Champaign means that it is about average compared to other places in Illinois.

January is the snowiest month in Granite City with 4.8 inches of snow, and 5 months of the year have significant snowfall.

January is the snowiest month in Champaign with 5.9 inches of snow, and 5 months of the year have significant snowfall.