Sac County, IA Climate

Sac County, Iowa has a humid continental climate with four distinct seasons. Summers are warm and often humid while winters are cold and dry. Spring brings plenty of rain and a wide variety of wildflowers, while autumn brings an array of leaves in vibrant colors. Average temperatures range from 28 °F in January to 74 °F in July. The area receives about 36 inches of precipitation annually, mostly spread out throughout the year. The area experiences occasional severe weather such as thunderstorms, tornadoes, and snowstorms.

Sac County, Iowa gets 33 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sac County averages 33 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 211 sunny days per year in Sac County. The US average is 205 sunny days.

Sac County gets some kind of precipitation, on average, 96 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 33 inches of rain a year
Snow: averages 33 inches of snow a year

Bestplaces Comfort Index

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

8.9 Summer - 4.5 Winter

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

Climate	Sac, Iowa	United States
	33.4 in.	38.1 in.
	33.2 in.	27.8 in.
	95.7 days	106.2 days
	211 days	205 days
	83.8°	85.8°
	8.7°	21.7°
	6.8	7
	4	4.3
	1328 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 Sac County with an average high temperature of 83.8°, which ranks it as about average compared to other places in Iowa. In Sac County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sac County are June, September and August.

In Sac County, there are 12.2 days annually when the high temperature is over 90°, which is about average compared to other places in Iowa.

January has the coldest nighttime temperatures for Sac County with an average of 8.7°. This is colder than most places in Iowa.

In Sac County, there are 155.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.

In Sac County, there are 20.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

The humidity is usually comfortable in Sac 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 Sac County with 5.2 inches of rain, and the driest month is February with 0.7 inches. The wettest season is Autumn with 41% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 33.4 inches in Sac County means that it is drier than most places in Iowa.

May is the rainiest month in Sac County with 11.7 days of rain, and February is the driest month with only 4.6 rainy days. There are 95.7 rainy days annually in Sac County, which is less rainy than most places in Iowa. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 16% chance of a rainy day.

An annual snowfall of 33.2 inches in Sac County means that it is snowier than most places in Iowa. December is the snowiest month in Sac County with 8.3 inches of snow, and 6 months of the year have significant snowfall.

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