St. Anne, IL Climate

St. Anne, IL has a humid continental climate characterized by four distinct seasons. Winters are cold and snowy with an average snowfall of 38 inches. Spring usually brings storms and mild temperatures, while summer can be hot and humid with temperatures often exceeding 90 degrees Fahrenheit. Fall is mild with occasional rain showers and pleasant temperatures. Overall, the climate in St. Anne is generally pleasant year round with a wide variety of weather patterns to enjoy.

St. Anne, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Anne averages 24 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 189 sunny days per year in St. Anne. The US average is 205 sunny days.

St. Anne gets some kind of precipitation, on average, 111 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 16
Rain: averages 38 inches of rain a year
Snow: averages 24 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Anne is 7.0 (10=best), which means it is about average compared to other places in Illinois.

8.8 Summer - 4.7 Winter

June, September and August are the most pleasant months in St. Anne, while January and December are the least comfortable months.

Climate	St. Anne, Illinois	United States
	38.4 in.	38.1 in.
	23.6 in.	27.8 in.
	110.9 days	106.2 days
	189 days	205 days
	84.2°	85.8°
	15.6°	21.7°
	7	7
	3.5	4.3
	666 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

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

In St. Anne, there are 15.3 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

January has the coldest nighttime temperatures for St. Anne with an average of 15.6°. This is colder than most places in Illinois.

In St. Anne, there are 127.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In St. Anne, there are 9.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

The humidity is usually comfortable in St. Anne but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

July is the wettest month in St. Anne with 4.4 inches of rain, and the driest month is February with 1.7 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 38.4 inches in St. Anne means that it is about average compared to other places in Illinois.

May is the rainiest month in St. Anne with 11.3 days of rain, and September is the driest month with only 7.4 rainy days. There are 110.9 rainy days annually in St. Anne, 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.

An annual snowfall of 23.6 inches in St. Anne means that it is snowier than most places in Illinois. January is the snowiest month in St. Anne with 8.1 inches of snow, and 6 months of the year have significant snowfall.