Black Hawk County, IA Climate

Black Hawk County, IA has a humid continental climate, which means that it experiences hot summers and cold winters. During the summer months, temperatures average in the low to mid-80s with high humidity levels and frequent thunderstorms. Winters are usually cold with temperatures averaging in the low 20s and occasional snowfall. The county's location in the Midwest also means that strong winds often blow through the area throughout the year. While summers tend to be hot and humid, spring and autumn are generally milder with less rainfall than the other seasons.

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

Black Hawk County averages 34 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 Black Hawk County. The US average is 205 sunny days.

Black Hawk 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 9
Rain: averages 36 inches of rain a year
Snow: averages 34 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Black Hawk County is 6.8 (10=best), which means it is about average compared to other places in Iowa.

8.9 Summer - 4.3 Winter

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

Climate	Black Hawk, Iowa	United States
	35.8 in.	38.1 in.
	33.9 in.	27.8 in.
	105.6 days	106.2 days
	191 days	205 days
	83.5°	85.8°
	8.8°	21.7°
	6.8	7
	3.6	4.3
	921 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 Black Hawk County with an average high temperature of 83.5°, which ranks it as cooler than most places in Iowa. In Black Hawk County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Black Hawk County are June, September and August.

In Black Hawk County, there are 11.5 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.

January has the coldest nighttime temperatures for Black Hawk County with an average of 8.8°. This is colder than most places in Iowa.

In Black Hawk County, there are 149.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Iowa.

In Black Hawk County, there are 20.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

The humidity is usually comfortable in Black Hawk 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 Black Hawk County with 5.2 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 41% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 35.8 inches in Black Hawk County means that it is about average compared to other places in Iowa.

May is the rainiest month in Black Hawk County with 12.1 days of rain, and February is the driest month with only 6.4 rainy days. There are 105.6 rainy days annually in Black Hawk County, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 20% chance of a rainy day.

An annual snowfall of 33.9 inches in Black Hawk County means that it is snowier than most places in Iowa. December is the snowiest month in Black Hawk County with 9.2 inches of snow, and 6 months of the year have significant snowfall.

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