St. Joseph County, IN Climate

The climate in St. Joseph, IN County is a humid continental climate with hot summers and cold winters. The average high temperature in July is 86°F (30°C) while the average low temperature in January is 22°F (-6°C). During the summer months, the humidity can be quite high, reaching up to 90% on average. Precipitation is fairly evenly spread throughout the year with an average of about 40 inches (101 cm) each year. Snowfall usually starts around mid-November and continues through mid-March, but it can vary greatly depending on the season.

St. Joseph County, Indiana gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Joseph County averages 61 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 173 sunny days per year in St. Joseph County. The US average is 205 sunny days.

St. Joseph County gets some kind of precipitation, on average, 142 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 83 degrees
Winter Low: the January low is 16
Rain: averages 40 inches of rain a year
Snow: averages 61 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Joseph County is 6.6 (10=best), which means it is one of the least comfortable places in Indiana.

9.1 Summer - 3.9 Winter

June, August and July are the most pleasant months in St. Joseph County, while January and December are the least comfortable months.

Climate	St. Joseph, Indiana	United States
	39.8 in.	38.1 in.
	61.0 in.	27.8 in.
	141.9 days	106.2 days
	173 days	205 days
	82.8°	85.8°
	15.9°	21.7°
	6.6	7
	3.5	4.3
	772 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 County with an average high temperature of 82.8°, which ranks it as one of the coolest places in Indiana. In St. Joseph County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Joseph County are June, August and September.

In St. Joseph County, there are 8.7 days annually when the high temperature is over 90°, which is cooler than most places in Indiana.

January has the coldest nighttime temperatures for St. Joseph County with an average of 15.9°. This is colder than most places in Indiana.

In St. Joseph County, there are 134.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Indiana.

In St. Joseph County, there are 7.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Indiana.

The humidity is usually comfortable in St. Joseph County 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.

May is the wettest month in St. Joseph County with 4.2 inches of rain, and the driest month is February with 2.1 inches. The wettest season is Autumn with 30% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 39.8 inches in St. Joseph County means that it is drier than most places in Indiana.

December is the rainiest month in St. Joseph County with 14.9 days of rain, and September is the driest month with only 9.7 rainy days. There are 141.9 rainy days annually in St. Joseph County, which is one of the rainiest places in Indiana. The rainiest season is Spring when it rains 29% of the time and the driest is Autumn with only a 22% chance of a rainy day.

An annual snowfall of 61.0 inches in St. Joseph County means that it is one of the snowiest places in Indiana. January is the snowiest month in St. Joseph County with 19.3 inches of snow, and 6 months of the year have significant snowfall.

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