Sioux County, IA Climate

Sioux, IA County has a humid continental climate with hot summers and cold winters. Average temperatures range from 42°F in January to 79°F in July. Precipitation is evenly distributed throughout the year with an average of 25 inches annually. The area experiences a wide range of weather conditions including snow, wind, thunderstorms, and hail. Winter temperatures can dip below 0 degrees Fahrenheit and summer temperatures can reach the mid-90s. To prepare for these weather conditions, residents should keep warm clothing and footwear available at all times.

Sioux County, Iowa gets 29 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 208 sunny days per year in Sioux County. The US average is 205 sunny days.

Sioux County gets some kind of precipitation, on average, 88 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 85 degrees
Winter Low: the January low is 7
Rain: averages 29 inches of rain a year
Snow: averages 33 inches of snow a year

Bestplaces Comfort Index

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

9 Summer - 4.4 Winter

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

Climate	Sioux, Iowa	United States
	29.2 in.	38.1 in.
	32.7 in.	27.8 in.
	88.3 days	106.2 days
	208 days	205 days
	84.5°	85.8°
	7.3°	21.7°
	6.8	7
	3.8	4.3
	1368 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 Sioux County with an average high temperature of 84.5°, which ranks it as warmer than most places in Iowa. In Sioux County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sioux County are September, June and August.

In Sioux County, there are 16.5 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.

January has the coldest nighttime temperatures for Sioux County with an average of 7.3°. This is colder than most places in Iowa.

In Sioux County, there are 161.6 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Iowa.

In Sioux County, there are 24.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

The humidity is usually comfortable in Sioux 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 Sioux County with 4.4 inches of rain, and the driest month is January with 0.7 inches. The wettest season is Autumn with 40% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 29.2 inches in Sioux County means that it is one of the driest places in Iowa.

May is the rainiest month in Sioux County with 10.9 days of rain, and February is the driest month with only 4.4 rainy days. There are 88.3 rainy days annually in Sioux 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 17% chance of a rainy day.

An annual snowfall of 32.7 inches in Sioux County means that it is snowier than most places in Iowa. December is the snowiest month in Sioux County with 7.8 inches of snow, and 7 months of the year have significant snowfall.

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