2025 Compare Climate & Weather:
Crystal Lake, IL vs Knoxville, TN

Highlights

On average, there are 204 sunny days per year in Knoxville. Crystal Lake averages 186 sunny days per year. The US average is 205 sunny days.

Knoxville, Tennessee gets 50.3 inches of rain, on average, per year. Crystal Lake, Illinois gets 36.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Knoxville averages 5.8 inches of snow per year. Crystal Lake averages 35.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Knoxville, Tennessee
Summer High: the July high is around 88.1 degrees
Winter Low: the January low is 27.9
Rain: averages 50.3 inches of rain a year
Snow: averages 5.8 inches of snow a year

Crystal Lake, Illinois
Summer High: the July high is around 81.8 degrees
Winter Low: the January low is 12.7
Rain: averages 36.7 inches of rain a year
Snow: averages 35.1 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Knoxville is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

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

Today's Weather - Crystal Lake, IL

44°F

Today's Weather - Knoxville, TN

60°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Crystal Lake / Knoxville

July is the hottest month for Crystal Lake with an average high temperature of 81.8°, which ranks it as one of the coolest places in Illinois. In Crystal Lake, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Crystal Lake are June, August and July.

July is the hottest month for Knoxville with an average high temperature of 88.1°, which ranks it as cooler than most places in Tennessee. In Knoxville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Knoxville are May, September and October.

January has the coldest nighttime temperatures for Crystal Lake with an average of 12.7°. This is one of the coldest places in Illinois.

January has the coldest nighttime temperatures for Knoxville with an average of 27.9°. This is warmer than most places in Tennessee.

In Crystal Lake, there are 6.9 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Knoxville, there are 29.7 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

In Crystal Lake, there are 138.7 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.

In Knoxville, there are 78.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Tennessee.

In Crystal Lake, there are 11.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Knoxville, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Tennessee.

August is the wettest month in Crystal Lake with 4.4 inches of rain, and the driest month is January with 1.7 inches. The wettest season is Autumn with 34% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 36.7 inches in Crystal Lake means that it is drier than most places in Illinois.


July is the wettest month in Knoxville with 5.2 inches of rain, and the driest month is October with 2.7 inches. The wettest season is Spring with 28% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 50.3 inches in Knoxville means that it is drier than most places in Tennessee.

May is the rainiest month in Crystal Lake with 11.6 days of rain, and February is the driest month with only 7.6 rainy days. There are 114.2 rainy days annually in Crystal Lake, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

March is the rainiest month in Knoxville with 12.0 days of rain, and September is the driest month with only 8.1 rainy days. There are 127.3 rainy days annually in Knoxville, which is rainier than most places in Tennessee. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

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

An annual snowfall of 5.8 inches in Knoxville means that it is snowier than most places in Tennessee.

January is the snowiest month in Crystal Lake with 10.9 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Knoxville with 2.4 inches of snow, and 4 months of the year have significant snowfall.