St. Joseph, IL Climate


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United States / Illinois / Champaign-Urbana Metro Area / Champaign County / St. Joseph / Zip Codes
St. Joseph, IL has a typical humid continental climate with warm, humid summers and cold winters. Summers average around 75°F (24°C) while winter temperatures drop down to an average of 23°F (-5°C). Precipitation is generally spread throughout the year, with the wettest months being May and June. Spring and autumn are mild with relatively low humidity levels and plenty of sunshine. Snowfall in St. Joseph is light compared to other parts of the Midwest region, but cold winter winds can make it feel much colder.

St. Joseph, Illinois gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Joseph averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 197 sunny days per year in St. Joseph. The US average is 205 sunny days.

St. Joseph gets some kind of precipitation, on average, 114 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 85 degrees
Winter Low: the January low is 17
Rain: averages 41 inches of rain a year
Snow: averages 22 inches of snow a year

Bestplaces Comfort Index

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

8.5 Summer - 4.9 Winter
September, June and May are the most pleasant months in St. Joseph, while January and December are the least comfortable months.

  ClimateSt. Joseph, IllinoisUnited States
  40.8 in.38.1 in.
  22.0 in.27.8 in.
  113.7 days106.2 days
  197 days205 days
  85.0°85.8°
  16.8°21.7°
  77
  44.3
  673 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. Joseph with an average high temperature of 85.0°, which ranks it as about average compared to other places in Illinois. In St. Joseph, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Joseph are September, May and June.
In St. Joseph, there are 18.2 days annually when the high temperature is over 90°, which is about average compared to other places in Illinois.
January has the coldest nighttime temperatures for St. Joseph with an average of 16.8°. This is about average compared to other places in Illinois.
In St. Joseph, there are 123.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.
In St. Joseph, there are 6.5 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.
The humidity is usually comfortable in St. Joseph but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in St. Joseph are July, August and June.
July is the wettest month in St. Joseph with 4.9 inches of rain, and the driest month is January with 2.1 inches. The wettest season is Autumn with 32% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 40.8 inches in St. Joseph means that it is wetter than most places in Illinois.
May is the rainiest month in St. Joseph with 11.4 days of rain, and September is the driest month with only 7.3 rainy days. There are 113.7 rainy days annually in St. Joseph, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 23% chance of a rainy day.
An annual snowfall of 22.0 inches in St. Joseph means that it is about average compared to other places in Illinois. December is the snowiest month in St. Joseph with 6.5 inches of snow, and 5 months of the year have significant snowfall.
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Scott · St. Joseph, IL
Excellent bedroom community for Champaign Urbana
Over 14 years ago

St. Joe is an excellent bedroom community to Champaign Urbana. The local grocery store and restaurants and shops are few but sufficient and Urbana is just 8 miles way.   More

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Bryan · Boles, AR
once lived there
Over 16 years ago

I do not know what the difference is in St.Joseph and St.Joseph township, but i lived there back from 1975 until the spring of 1979. I have good memories there of the  More

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