Zip 61109 (Rockford, IL) Climate

61109 Rockford, IL has a humid continental climate, with hot and humid summers and cold winters. The average summer temperatures range from the mid-70s to mid-80s with high humidity levels and frequent thunderstorms. Winters are generally cold, with temperatures ranging from the low teens to around freezing. Precipitation is abundant throughout the year, with an average of 33 inches per year. Snowfall is also common in the winter months. Spring and autumn are mild transitions between the two other seasons, with temperatures ranging from the 40s to 70s.

Rockford (zip 61109), Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Rockford (zip 61109) 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 Rockford (zip 61109). The US average is 205 sunny days.

Rockford (zip 61109) gets some kind of precipitation, on average, 116 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 13
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 the 61109 zip code is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

9 Summer - 4.3 Winter

June, September and August are the most pleasant months in the 61109 zip code, while January and December are the least comfortable months.

Climate	Rockford, Illinois	United States
	37.1 in.	38.1 in.
	35.1 in.	27.8 in.
	116.1 days	106.2 days
	191 days	205 days
	83.5°	85.8°
	12.6°	21.7°
	6.8	7
	3.5	4.3
	815 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 61109 zip code with an average high temperature of 83.5°, which ranks it as cooler than most places in Illinois. In the 61109 zip code, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 61109 zip code are June, September and August.

In the 61109 zip code, there are 11.7 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

January has the coldest nighttime temperatures for the 61109 zip code with an average of 12.6°. This is one of the coldest places in Illinois.

In the 61109 zip code, there are 138.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In the 61109 zip code, there are 13.0 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 the 61109 zip code 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 the 61109 zip code with 4.9 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 37% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 37.1 inches in the 61109 zip code means that it is drier than most places in Illinois.

May is the rainiest month in the 61109 zip code with 12.0 days of rain, and September is the driest month with only 8.0 rainy days. There are 116.1 rainy days annually in the 61109 zip code, 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 35.1 inches in the 61109 zip code means that it is one of the snowiest places in Illinois. December is the snowiest month in the 61109 zip code with 11.4 inches of snow, and 6 months of the year have significant snowfall.

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