Sioux City Metro Area, IA Climate

The climate in Sioux City, IA Metro Area is a humid continental climate. The summers are hot and humid with temperatures in the mid-80s and there can be occasional days with very high heat index values. Winters are cold with temperatures usually ranging from the teens to the thirties, and snowfall averages around 20 inches annually. The area also experiences strong storms throughout the year, including thunderstorms, tornadoes, hail, and occasionally flooding. Overall humidity levels tend to remain fairly high throughout the year since the city is near several large bodies of water.

Sioux City Metro Area, Iowa gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sioux City Metro Area averages 32 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 210 sunny days per year in Sioux City Metro Area. The US average is 205 sunny days.

Sioux City Metro Area gets some kind of precipitation, on average, 84 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 9
Rain: averages 30 inches of rain a year
Snow: averages 32 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the Sioux City metro area is 7.0 (10=best), which means it is more comfortable than most places in Iowa.

8.9 Summer - 4.6 Winter

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

Climate	Sioux City, Iowa	United States
	29.6 in.	38.1 in.
	32.4 in.	27.8 in.
	83.5 days	106.2 days
	210 days	205 days
	85.3°	85.8°
	9.3°	21.7°
	7	7
	3.6	4.3
	1280 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 Sioux City metro area with an average high temperature of 85.3°, which ranks it as warmer than most places in Iowa. In the Sioux City metro area, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the Sioux City metro area are September, June and August.

In the Sioux City metro area, there are 18.3 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.

January has the coldest nighttime temperatures for the Sioux City metro area with an average of 9.3°. This is colder than most places in Iowa.

In the Sioux City metro area, there are 157.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.

In the Sioux City metro area, there are 19.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

The humidity is usually comfortable in the Sioux City metro area 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 the Sioux City metro area with 4.4 inches of rain, and the driest month is January with 0.7 inches. The wettest season is Autumn with 38% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 29.6 inches in the Sioux City metro area means that it is one of the driest places in Iowa.

May is the rainiest month in the Sioux City metro area with 10.3 days of rain, and February is the driest month with only 4.1 rainy days. There are 83.5 rainy days annually in the Sioux City metro area, which is one of the least rainy places in Iowa. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 16% chance of a rainy day.

An annual snowfall of 32.4 inches in the Sioux City metro area means that it is snowier than most places in Iowa. December is the snowiest month in the Sioux City metro area with 7.4 inches of snow, and 7 months of the year have significant snowfall.

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