2025 Compare Climate & Weather:
Carbondale, IL vs Lafayette, IN

Highlights

On average, there are 187 sunny days per year in Lafayette. Carbondale averages 216 sunny days per year. The US average is 205 sunny days.

Lafayette, Indiana gets 37.9 inches of rain, on average, per year. Carbondale, Illinois gets 45.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lafayette averages 19.4 inches of snow per year. Carbondale averages 10.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lafayette, Indiana
Summer High: the July high is around 86.5 degrees
Winter Low: the January low is 17
Rain: averages 37.9 inches of rain a year
Snow: averages 19.4 inches of snow a year

Carbondale, Illinois
Summer High: the July high is around 88.6 degrees
Winter Low: the January low is 23.8
Rain: averages 45.6 inches of rain a year
Snow: averages 10.3 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Carbondale, IL

71°F

Today's Weather - Lafayette, IN

68°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Carbondale / Lafayette

July is the hottest month for Carbondale with an average high temperature of 88.6°, which ranks it as one of the hottest places in Illinois. In Carbondale, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Carbondale are May, September and June.

July is the hottest month for Lafayette with an average high temperature of 86.5°, which ranks it as warmer than most places in Indiana. In Lafayette, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lafayette are September, May and June.

January has the coldest nighttime temperatures for Carbondale with an average of 23.8°. This is one of the warmest places in Illinois.

January has the coldest nighttime temperatures for Lafayette with an average of 17.0°. This is colder than most places in Indiana.

In Carbondale, there are 35.1 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In Lafayette, there are 26.7 days annually when the high temperature is over 90°, which is hotter than most places in Indiana.

In Carbondale, there are 94.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Lafayette, there are 122.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Indiana.

In Carbondale, there are 1.4 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

In Lafayette, there are 6.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Indiana.

May is the wettest month in Carbondale with 5.3 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 30% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 45.6 inches in Carbondale means that it is one of the wettest places in Illinois.


May is the wettest month in Lafayette with 4.5 inches of rain, and the driest month is February with 1.9 inches. The wettest season is Autumn with 32% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 37.9 inches in Lafayette means that it is one of the driest places in Indiana.

May is the rainiest month in Carbondale with 11.3 days of rain, and September is the driest month with only 6.6 rainy days. There are 102.3 rainy days annually in Carbondale, 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 Winter with only a 22% chance of a rainy day.

May is the rainiest month in Lafayette with 11.9 days of rain, and September is the driest month with only 8.1 rainy days. There are 119.6 rainy days annually in Lafayette, which is rainier than most places in Indiana. 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.

An annual snowfall of 10.3 inches in Carbondale means that it is one of the least snowy places in Illinois.

An annual snowfall of 19.4 inches in Lafayette means that it is about average compared to other places in Indiana.

December is the snowiest month in Carbondale with 3.2 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Lafayette with 5.9 inches of snow, and 4 months of the year have significant snowfall.