2025 Compare Climate & Weather:
Crystal Lake, IL vs Missoula, MT

Highlights

On average, there are 159 sunny days per year in Missoula. Crystal Lake averages 186 sunny days per year. The US average is 205 sunny days.

Missoula, Montana gets 15.2 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.

Missoula averages 39.5 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

Missoula, Montana
Summer High: the July high is around 84.6 degrees
Winter Low: the January low is 17.9
Rain: averages 15.2 inches of rain a year
Snow: averages 39.5 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 Missoula is 6.6 (10=best), which means it is about average compared to other places in Montana.

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

51°F

Today's Weather - Missoula, MT

63°F

Average Monthly High / Low (°F)

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

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 Missoula with an average high temperature of 84.6°, which ranks it as about average compared to other places in Montana. In Missoula, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Missoula are June, August and September.

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

December has the coldest nighttime temperatures for Missoula with an average of 16.9°. This is warmer than most places in Montana.

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 Missoula, there are 19.9 days annually when the high temperature is over 90°, which is about average compared to other places in Montana.

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 Missoula, there are 166.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Montana.

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 Missoula, there are 6.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Montana.

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.


June is the wettest month in Missoula with 2.2 inches of rain, and the driest month is February with 0.8 inches. The wettest season is Summer with 30% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 15.2 inches in Missoula means that it is wetter than most places in Montana.

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.

December is the rainiest month in Missoula with 12.1 days of rain, and July is the driest month with only 6.9 rainy days. There are 120.4 rainy days annually in Missoula, which is rainier than most places in Montana. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 22% 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 39.5 inches in Missoula means that it is about average compared to other places in Montana.

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

December is the snowiest month in Missoula with 11.1 inches of snow, and 7 months of the year have significant snowfall.