O Brien County, IA Climate

O'Brien County, IA has a humid continental climate, characterized by warm, humid summers and cold winters. The average high temperature in summer is around 80°F (27°C) while the average low temperature in winter is around 17°F (-8°C). Precipitation is evenly distributed throughout the year with an average of about 29 inches (737 mm). Snowfall typically accumulates from November to April with an average amount of about 23 inches (584 mm). The area is prone to strong winds and thunderstorms during the summer months.

O'Brien County, Iowa gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.

O'Brien County averages 35 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 O'Brien County. The US average is 205 sunny days.

O'Brien County gets some kind of precipitation, on average, 93 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 83 degrees
Winter Low: the January low is 7
Rain: averages 30 inches of rain a year
Snow: averages 35 inches of snow a year

Bestplaces Comfort Index

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

9 Summer - 4.3 Winter

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

Climate	O'Brien, Iowa	United States
	Unlock	38.1 in.
	35.4 in.	Unlock
	Unlock	106.2 days
	208 days	Unlock
	83.3°	85.8°
	Unlock	21.7°
	6.8	Unlock
	Unlock	4.3
	1453 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 O'Brien County with an average high temperature of 83.3°, which ranks it as cooler than most places in Iowa. In O'Brien County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for O'Brien County are June, August and September.

In O'Brien County, there are 10.9 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.

January has the coldest nighttime temperatures for O'Brien County with an average of 7.1°. This is colder than most places in Iowa.

In O'Brien County, there are 159.3 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Iowa.

In O'Brien County, there are 24.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

The humidity is usually comfortable in O'Brien 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 O'Brien County with 4.7 inches of rain, and the driest month is January 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 30.3 inches in O'Brien County means that it is one of the driest places in Iowa.

June is the rainiest month in O'Brien County with 11.3 days of rain, and February is the driest month with only 4.6 rainy days. There are 93.0 rainy days annually in O'Brien 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 35.4 inches in O'Brien County means that it is snowier than most places in Iowa. December is the snowiest month in O'Brien County with 9.1 inches of snow, and 6 months of the year have significant snowfall.

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