Jo Daviess County, IL Climate

Jo Daviess County, Illinois has a humid continental climate. The summers in Jo Daviess County are generally warm and humid with temperatures ranging from the mid-50s to the low-80s, while winters tend to be cold and snowy with temperatures ranging from the teens to the 30s. Precipitation is fairly evenly distributed throughout the year with snowfall occurring in December through March. The area receives about 36 inches of precipitation per year, most of which falls as rain or snow during the winter months. This weather makes Jo Daviess a great place for outdoor activities such as camping, hiking, fishing, and hunting.

Jo Daviess County, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Jo Daviess County averages 35 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 191 sunny days per year in Jo Daviess County. The US average is 205 sunny days.

Jo Daviess County 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 83 degrees
Winter Low: the January low is 10
Rain: averages 37 inches of rain a year
Snow: averages 35 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Jo Daviess County is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

9 Summer - 4.3 Winter

June, August and September are the most pleasant months in Jo Daviess County, while January and December are the least comfortable months.

Climate	Jo Daviess, Illinois	United States
	36.7 in.	38.1 in.
	35.0 in.	27.8 in.
	110.5 days	106.2 days
	191 days	205 days
	83.3°	85.8°
	10.4°	21.7°
	6.8	7
	3.7	4.3
	834 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 Jo Daviess County with an average high temperature of 83.3°, which ranks it as one of the coolest places in Illinois. In Jo Daviess County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jo Daviess County are June, August and September.

In Jo Daviess County, there are 10.3 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

January has the coldest nighttime temperatures for Jo Daviess County with an average of 10.4°. This is one of the coldest places in Illinois.

In Jo Daviess County, there are 146.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.

In Jo Daviess County, there are 17.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Illinois.

The humidity is usually comfortable in Jo Daviess 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.

June is the wettest month in Jo Daviess County with 5.0 inches of rain, and the driest month is January with 1.2 inches. The wettest season is Autumn with 37% of yearly precipitation and 12% occurs in Spring, which is the driest season. The annual rainfall of 36.7 inches in Jo Daviess County means that it is drier than most places in Illinois.

May is the rainiest month in Jo Daviess County with 11.6 days of rain, and February is the driest month with only 7.1 rainy days. There are 110.5 rainy days annually in Jo Daviess County, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 21% chance of a rainy day.

An annual snowfall of 35.0 inches in Jo Daviess County means that it is one of the snowiest places in Illinois. January is the snowiest month in Jo Daviess County with 10.1 inches of snow, and 6 months of the year have significant snowfall.

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