Mills County, IA Climate

Mills, IA County has a humid continental climate with hot summers and cold winters. July is typically the hottest month of the year, with average temperatures reaching into the high 80s and low 90s. The coldest month of the year is January, when temperatures can drop down to as low as the single digits. Average annual precipitation in Mills, IA County is approximately 33 inches. Snowfall is relatively light in this area, with an annual average of around 19 inches. With its hot summers and cold winters, Mills, IA County provides residents with all four distinct seasons.

Mills County, Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Mills County averages 24 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 215 sunny days per year in Mills County. The US average is 205 sunny days.

Mills County gets some kind of precipitation, on average, 92 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 87 degrees
Winter Low: the January low is 12
Rain: averages 35 inches of rain a year
Snow: averages 24 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Mills County is 7.1 (10=best), which means it is one of the most pleasant places in Iowa.

8.5 Summer - 5.1 Winter

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

Climate	Mills, Iowa	United States
	Unlock	38.1 in.
	24.4 in.	Unlock
	Unlock	106.2 days
	215 days	Unlock
	86.5°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	1088 ft.	Unlock

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 Mills County with an average high temperature of 86.5°, which ranks it as one of the hottest places in Iowa. In Mills County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mills County are September, May and June.

In Mills County, there are 20.6 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 Mills County with an average of 12.4°. This is warmer than most places in Iowa.

In Mills County, there are 144.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Iowa.

In Mills County, there are 10.4 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Iowa.

The humidity is usually comfortable in Mills County but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in Mills County are July, August and June.

June is the wettest month in Mills County with 5.3 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 34.6 inches in Mills County means that it is drier than most places in Iowa.

May is the rainiest month in Mills County with 12.0 days of rain, and January is the driest month with only 4.6 rainy days. There are 92.0 rainy days annually in Mills County, which is less rainy than most places in Iowa. The rainiest season is Summer when it rains 32% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 24.4 inches in Mills County means that it is one of the least snowy places in Iowa. February is the snowiest month in Mills County with 6.4 inches of snow, and 6 months of the year have significant snowfall.

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