Zip 61071 (Rock Falls, IL) Climate

Rock Falls, IL, located in the northern part of the state, is characterized by a humid continental climate. The summers are warm with temperatures reaching into the mid-80s while winters tend to be cold and snowy with temperatures often dropping below freezing. Average annual precipitation in Rock Falls is around 30 inches and snowfall averages around 35 inches annually. Precipitation is fairly evenly distributed throughout the year with little variation between summer and winter.

Rock Falls (zip 61071), Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Rock Falls (zip 61071) averages 29 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 193 sunny days per year in Rock Falls (zip 61071). The US average is 205 sunny days.

Rock Falls (zip 61071) gets some kind of precipitation, on average, 100 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 12
Rain: averages 38 inches of rain a year
Snow: averages 29 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 61071 zip code is 7.0 (10=best), which means it is about average compared to other places in Illinois.

9 Summer - 4.6 Winter

June, September and August are the most pleasant months in the 61071 zip code, while January and December are the least comfortable months.

Climate	Rock Falls, Illinois	United States
	38.0 in.	38.1 in.
	28.9 in.	27.8 in.
	100.0 days	106.2 days
	193 days	205 days
	83.8°	85.8°
	12.1°	21.7°
	7	7
	3.6	4.3
	650 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 61071 zip code with an average high temperature of 83.8°, which ranks it as cooler than most places in Illinois. In the 61071 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 61071 zip code are September, June and August.

In the 61071 zip code, there are 13.5 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 61071 zip code with an average of 12.1°. This is one of the coldest places in Illinois.

In the 61071 zip code, there are 138.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.

In the 61071 zip code, there are 14.0 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 61071 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.

August is the wettest month in the 61071 zip code with 4.7 inches of rain, and the driest month is January with 1.5 inches. The wettest season is Autumn with 35% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 38.0 inches in the 61071 zip code means that it is drier than most places in Illinois.

May is the rainiest month in the 61071 zip code with 10.7 days of rain, and February is the driest month with only 6.1 rainy days. There are 100.0 rainy days annually in the 61071 zip code, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 21% chance of a rainy day.

An annual snowfall of 28.9 inches in the 61071 zip code means that it is snowier than most places in Illinois. January is the snowiest month in the 61071 zip code with 9.9 inches of snow, and 6 months of the year have significant snowfall.

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