2025 Compare Climate & Weather:
Jarrettsville, MD vs Belleville, IL

Highlights

On average, there are 203 sunny days per year in Belleville. Jarrettsville averages 208 sunny days per year. The US average is 205 sunny days.

Belleville, Illinois gets 42.3 inches of rain, on average, per year. Jarrettsville, Maryland gets 46.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Belleville averages 12.7 inches of snow per year. Jarrettsville averages 28.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Belleville, Illinois
Summer High: the July high is around 89.1 degrees
Winter Low: the January low is 22.2
Rain: averages 42.3 inches of rain a year
Snow: averages 12.7 inches of snow a year

Jarrettsville, Maryland
Summer High: the July high is around 86.6 degrees
Winter Low: the January low is 23.5
Rain: averages 46.4 inches of rain a year
Snow: averages 28.5 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Jarrettsville is 7.2 (10=best), which means it is less comfortable than most places in Maryland.

Today's Weather - Jarrettsville, MD

64°F

Today's Weather - Belleville, IL

54°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Jarrettsville / Belleville

July is the hottest month for Jarrettsville with an average high temperature of 86.6°, which ranks it as cooler than most places in Maryland. In Jarrettsville, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jarrettsville are September, May and June.

July is the hottest month for Belleville with an average high temperature of 89.1°, which ranks it as one of the hottest places in Illinois. In Belleville, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Belleville are May, September and June.

January has the coldest nighttime temperatures for Jarrettsville with an average of 23.5°. This is colder than most places in Maryland.

January has the coldest nighttime temperatures for Belleville with an average of 22.2°. This is warmer than most places in Illinois.

In Jarrettsville, there are 21.7 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

In Belleville, there are 39.3 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In Jarrettsville, there are 97.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.

In Belleville, there are 100.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Jarrettsville, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

In Belleville, there are 1.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

September is the wettest month in Jarrettsville with 4.7 inches of rain, and the driest month is February with 3.0 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 46.4 inches in Jarrettsville means that it is one of the wettest places in Maryland.


May is the wettest month in Belleville with 4.8 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 42.3 inches in Belleville means that it is wetter than most places in Illinois.

May is the rainiest month in Jarrettsville with 11.8 days of rain, and October is the driest month with only 8.5 rainy days. There are 121.1 rainy days annually in Jarrettsville, which is rainier than most places in Maryland. 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 Belleville with 11.1 days of rain, and September is the driest month with only 6.6 rainy days. There are 101.0 rainy days annually in Belleville, 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 Spring with only a 22% chance of a rainy day.

An annual snowfall of 28.5 inches in Jarrettsville means that it is snowier than most places in Maryland.

An annual snowfall of 12.7 inches in Belleville means that it is less snowy than most places in Illinois.

February is the snowiest month in Jarrettsville with 9.9 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Belleville with 4.1 inches of snow, and 4 months of the year have significant snowfall.