2025 Compare Climate & Weather:
Wheaton, IL vs Billings, MT

Highlights

On average, there are 205 sunny days per year in Billings. Wheaton averages 186 sunny days per year. The US average is 205 sunny days.

Billings, Montana gets 14.2 inches of rain, on average, per year. Wheaton, Illinois gets 38.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Billings averages 46.3 inches of snow per year. Wheaton averages 29.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Billings, Montana
Summer High: the July high is around 88.3 degrees
Winter Low: the January low is 15.8
Rain: averages 14.2 inches of rain a year
Snow: averages 46.3 inches of snow a year

Wheaton, Illinois
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 15
Rain: averages 38.6 inches of rain a year
Snow: averages 29.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Billings is 7.0 (10=best), which means it is one of the most pleasant places in Montana.

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

Today's Weather - Wheaton, IL

67°F

Today's Weather - Billings, MT

78°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Wheaton / Billings

July is the hottest month for Wheaton with an average high temperature of 84.2°, which ranks it as cooler than most places in Illinois. In Wheaton, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Wheaton are June, September and August.

July is the hottest month for Billings with an average high temperature of 88.3°, which ranks it as one of the hottest places in Montana. In Billings, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Billings are June, September and May.

January has the coldest nighttime temperatures for Wheaton with an average of 15.0°. This is colder than most places in Illinois.

January has the coldest nighttime temperatures for Billings with an average of 15.8°. This is warmer than most places in Montana.

In Wheaton, there are 9.3 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

In Billings, there are 33.1 days annually when the high temperature is over 90°, which is one of the hottest places in Montana.

In Wheaton, there are 138.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Billings, there are 151.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Montana.

In Wheaton, there are 5.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

In Billings, there are 12.6 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Montana.

August is the wettest month in Wheaton 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 Wheaton means that it is about average compared to other places in Illinois.


May is the wettest month in Billings with 2.3 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Summer with 35% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 14.2 inches in Billings means that it is about average compared to other places in Montana.

May is the rainiest month in Wheaton with 11.9 days of rain, and September is the driest month with only 8.0 rainy days. There are 119.2 rainy days annually in Wheaton, 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 23% chance of a rainy day.

May is the rainiest month in Billings with 11.0 days of rain, and January is the driest month with only 5.4 rainy days. There are 88.3 rainy days annually in Billings, which is about average compared to other places in Montana. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 29.8 inches in Wheaton means that it is snowier than most places in Illinois.

An annual snowfall of 46.3 inches in Billings means that it is snowier than most places in Montana.

January is the snowiest month in Wheaton with 9.8 inches of snow, and 6 months of the year have significant snowfall.

March is the snowiest month in Billings with 9.2 inches of snow, and 9 months of the year have significant snowfall.