2025 Compare Climate & Weather:
Maryville, IL vs St. Louis, MO

Highlights

On average, there are 202 sunny days per year in St. Louis. Maryville averages 205 sunny days per year. The US average is 205 sunny days.

St. Louis, Missouri gets 42.2 inches of rain, on average, per year. Maryville, Illinois gets 43 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

St. Louis averages 15.5 inches of snow per year. Maryville averages 11.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

St. Louis, Missouri
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 22.8
Rain: averages 42.2 inches of rain a year
Snow: averages 15.5 inches of snow a year

Maryville, Illinois
Summer High: the July high is around 88.8 degrees
Winter Low: the January low is 22.4
Rain: averages 43 inches of rain a year
Snow: averages 11.6 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for St. Louis is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

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

Today's Weather - Maryville, IL

46°F

Today's Weather - St. Louis, MO

47°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Maryville / St. Louis

July is the hottest month for Maryville with an average high temperature of 88.8°, which ranks it as one of the hottest places in Illinois. In Maryville, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Maryville are May, September and June.

July is the hottest month for St. Louis with an average high temperature of 88.5°, which ranks it as about average compared to other places in Missouri. In St. Louis, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Louis are May, September and June.

January has the coldest nighttime temperatures for Maryville with an average of 22.4°. This is one of the warmest places in Illinois.

January has the coldest nighttime temperatures for St. Louis with an average of 22.8°. This is warmer than most places in Missouri.

In Maryville, there are 36.2 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In St. Louis, there are 36.0 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.

In Maryville, there are 91.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In St. Louis, there are 91.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.

In Maryville, there are 1.7 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

In St. Louis, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.

May is the wettest month in Maryville with 5.0 inches of rain, and the driest month is January with 2.5 inches. The wettest season is Summer with 29% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 43.0 inches in Maryville means that it is wetter than most places in Illinois.


May is the wettest month in St. Louis 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 42.2 inches in St. Louis means that it is drier than most places in Missouri.

May is the rainiest month in Maryville with 10.9 days of rain, and September is the driest month with only 6.7 rainy days. There are 98.6 rainy days annually in Maryville, 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.

May is the rainiest month in St. Louis with 11.3 days of rain, and September is the driest month with only 7.0 rainy days. There are 105.3 rainy days annually in St. Louis, which is rainier than most places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 11.6 inches in Maryville means that it is less snowy than most places in Illinois.

An annual snowfall of 15.5 inches in St. Louis means that it is snowier than most places in Missouri.

January is the snowiest month in Maryville with 3.8 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in St. Louis with 4.9 inches of snow, and 5 months of the year have significant snowfall.