2025 Compare Climate & Weather:
Naperville, IL vs Tonasket, WA

Highlights

On average, there are 187 sunny days per year in Tonasket. Naperville averages 189 sunny days per year. The US average is 205 sunny days.

Tonasket, Washington gets 14.2 inches of rain, on average, per year. Naperville, Illinois gets 38.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Tonasket averages 62.6 inches of snow per year. Naperville averages 28.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Tonasket, Washington
Summer High: the July high is around 86.3 degrees
Winter Low: the January low is 20.6
Rain: averages 14.2 inches of rain a year
Snow: averages 62.6 inches of snow a year

Naperville, Illinois
Summer High: the July high is around 83.8 degrees
Winter Low: the January low is 15.1
Rain: averages 38.6 inches of rain a year
Snow: averages 28.7 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Naperville is 6.9 (10=best), which means it is less comfortable than most places in Illinois.

Today's Weather - Naperville, IL

64°F

Today's Weather - Tonasket, WA

73°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Naperville / Tonasket

July is the hottest month for Naperville with an average high temperature of 83.8°, which ranks it as cooler than most places in Illinois. In Naperville, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Naperville are June, September and August.

July is the hottest month for Tonasket with an average high temperature of 86.3°, which ranks it as warmer than most places in Washington. In Tonasket, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Tonasket are June, September and May.

January has the coldest nighttime temperatures for Naperville with an average of 15.1°. This is colder than most places in Illinois.

December has the coldest nighttime temperatures for Tonasket with an average of 20.0°. This is one of the coldest places in Washington.

In Naperville, there are 8.6 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Tonasket, there are 26.1 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Naperville, there are 135.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Tonasket, there are 139.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In Naperville, there are 6.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

In Tonasket, there are 3.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Washington.

August is the wettest month in Naperville with 4.2 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 38.6 inches in Naperville means that it is about average compared to other places in Illinois.


December is the wettest month in Tonasket with 2.2 inches of rain, and the driest month is August with 0.5 inches. The wettest season is Spring with 37% of yearly precipitation and 18% occurs in Autumn, which is the driest season. The annual rainfall of 14.2 inches in Tonasket means that it is drier than most places in Washington.

May is the rainiest month in Naperville with 12.0 days of rain, and September is the driest month with only 7.9 rainy days. There are 120.3 rainy days annually in Naperville, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

December is the rainiest month in Tonasket with 12.7 days of rain, and August is the driest month with only 3.9 rainy days. There are 96.0 rainy days annually in Tonasket, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 17% chance of a rainy day.

An annual snowfall of 28.7 inches in Naperville means that it is snowier than most places in Illinois.

An annual snowfall of 62.6 inches in Tonasket means that it is one of the snowiest places in Washington.

January is the snowiest month in Naperville with 9.1 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Tonasket with 23.8 inches of snow, and 6 months of the year have significant snowfall.