Zip 61873 (St. Joseph, IL) Climate

St. Joseph, IL, 61873 has a warm-summer humid continental climate with hot, humid summers and cold winters. The average summer temperature is around 80 degrees Fahrenheit while the average winter temperature is around 28 degrees Fahrenheit. Precipitation levels are quite high reaching up to 42 inches during the wettest months in spring and summer. Snowfall is moderate but can vary from year to year with an average of 17 inches annually.

St. Joseph (zip 61873), Illinois gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Joseph (zip 61873) averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 195 sunny days per year in St. Joseph (zip 61873). The US average is 205 sunny days.

St. Joseph (zip 61873) 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 the 61873 zip code 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 the 61873 zip code, while January and December are the least comfortable months.

Climate	St. Joseph, Illinois	United States
	40.8 in.	38.1 in.
	22.0 in.	27.8 in.
	113.7 days	106.2 days
	195 days	205 days
	85.0°	85.8°
	16.8°	21.7°
	7	7
	4	4.3
	677 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 the 61873 zip code with an average high temperature of 85.0°, which ranks it as about average compared to other places in Illinois. In the 61873 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 61873 zip code are September, May and June.

In the 61873 zip code, 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 the 61873 zip code with an average of 16.8°. This is about average compared to other places in Illinois.

In the 61873 zip code, 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 the 61873 zip code, 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 the 61873 zip code 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 the 61873 zip code are July, August and June.

July is the wettest month in the 61873 zip code 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 the 61873 zip code means that it is wetter than most places in Illinois.

May is the rainiest month in the 61873 zip code 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 the 61873 zip code, 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 the 61873 zip code means that it is about average compared to other places in Illinois. December is the snowiest month in the 61873 zip code with 6.5 inches of snow, and 5 months of the year have significant snowfall.

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