Clinton County, IA Climate

The climate in Clinton, IA County is largely influenced by the humid continental climate. This means that summers are hot and humid with temperatures often reaching above 90 degrees Fahrenheit. Winters are cold with daytime temperatures typically staying in the 20s and 30s degree range. Precipitation is spread evenly throughout the year, with an average of around 35 inches per year. The area also enjoys four distinct seasons and a wide variety of vegetation and wildlife, making it an ideal place for outdoor activities all year round.

Clinton County, Iowa gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Clinton County averages 30 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 197 sunny days per year in Clinton County. The US average is 205 sunny days.

Clinton County gets some kind of precipitation, on average, 106 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 36 inches of rain a year
Snow: averages 30 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Clinton County is 6.9 (10=best), which means it is more comfortable than most places in Iowa.

8.9 Summer - 4.5 Winter

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

Climate	Clinton, Iowa	United States
	Unlock	38.1 in.
	29.6 in.	Unlock
	Unlock	106.2 days
	197 days	Unlock
	84.1°	85.8°
	Unlock	21.7°
	6.9	Unlock
	Unlock	4.3
	724 ft.	Unlock

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 Clinton County with an average high temperature of 84.1°, which ranks it as about average compared to other places in Iowa. In Clinton County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Clinton County are September, June and August.

In Clinton County, there are 11.7 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.

January has the coldest nighttime temperatures for Clinton County with an average of 11.7°. This is warmer than most places in Iowa.

In Clinton County, there are 139.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Iowa.

In Clinton County, there are 14.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Iowa.

The humidity is usually comfortable in Clinton 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.

August is the wettest month in Clinton County with 4.6 inches of rain, and the driest month is January with 1.3 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.0 inches in Clinton County means that it is about average compared to other places in Iowa.

May is the rainiest month in Clinton County with 11.1 days of rain, and February is the driest month with only 6.8 rainy days. There are 106.2 rainy days annually in Clinton County, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 29.6 inches in Clinton County means that it is about average compared to other places in Iowa. January is the snowiest month in Clinton County with 8.8 inches of snow, and 6 months of the year have significant snowfall.

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