Sioux City, IA Climate


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United States / Iowa / Sioux City Metro Area / Woodbury County / Sioux City / Zip Codes
Sioux City, IA has a humid continental climate, with hot summers and cold winters. Average temperatures in the summer range from highs of 81 degrees Fahrenheit to lows of 61 degrees Fahrenheit. Winter temperatures usually range from highs of 28 degrees Fahrenheit to lows of 9 degrees Fahrenheit. The city experiences an average annual precipitation amount of 26 inches, with snowfall averaging 28 inches annually. Sioux City also receives around 227 sunny days per year.

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

Sioux City 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. The US average is 205 sunny days.

Sioux City 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 86 degrees
Winter Low: the January low is 10
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 Sioux City 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 Sioux City, while January and December are the least comfortable months.

  ClimateSioux City, IowaUnited States
  29.5 in.38.1 in.
  32.3 in.27.8 in.
  83.7 days106.2 days
  210 days205 days
  85.5°85.8°
  9.6°21.7°
  77
  3.84.3
  1201 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 City with an average high temperature of 85.5°, which ranks it as warmer than most places in Iowa. In Sioux City, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sioux City are September, June and August.
In Sioux City, there are 19.8 days annually when the high temperature is over 90°, which is one of the hottest places in Iowa.
January has the coldest nighttime temperatures for Sioux City with an average of 9.6°. This is about average compared to other places in Iowa.
In Sioux City, there are 155.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.
In Sioux City, there are 18.9 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Iowa.
The humidity is usually comfortable in Sioux City 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 City with 4.1 inches of rain, and the driest month is February with 0.7 inches. The wettest season is Autumn with 37% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 29.5 inches in Sioux City means that it is one of the driest places in Iowa.
May is the rainiest month in Sioux City with 10.3 days of rain, and February is the driest month with only 4.1 rainy days. There are 83.7 rainy days annually in Sioux City, 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 32.3 inches in Sioux City means that it is snowier than most places in Iowa. December is the snowiest month in Sioux City with 7.3 inches of snow, and 6 months of the year have significant snowfall.
Reviews for Sioux City
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Maureen · Sioux City, IA
Unclench, Siouxland...
Over 6 years ago

I’ve been here only 4 months and I’m still shocked at how people behave. Not friendly, rude. Can’t tell you how many businesses I’ve been in to where the reception staff  More

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Mike · Sioux City, IA
Sioux City, Woodbury, Iowa
Over 9 years ago

Climate in winter ranges from 10-15 degrees to 85+ in the summer 7% sale tax population @75,000, economy ok  More

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Joshua · Sioux City, IA
Great Place!!!!!!!!!!!!!
Over 13 years ago

Sioux City is an amazing place. Low crime rate, Great Schools, Great People, Most People are friendly and Polite. Just an overall great place to live!!!!!!!!!!!   More

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