Lyon County, IA Climate

Lyon, IA County has a humid continental climate. Summers are hot and humid with temperatures reaching into the mid-80s, while winters are cold and snowy with temperatures dropping to the low teens. Precipitation is abundant throughout the year, with snowfall averaging around 26 inches annually. Spring and fall are mild transitions between the hotter summers and colder winters, making them ideal times for outdoor activities like hiking or camping. The area has around 200 sunny days each year with a high UV index due to its location in the Midwest.

Lyon County, Iowa gets 28 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Lyon 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 Lyon County. The US average is 205 sunny days.

Lyon County gets some kind of precipitation, on average, 87 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 84 degrees
Winter Low: the January low is 6
Rain: averages 28 inches of rain a year
Snow: averages 33 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Lyon County is 6.9 (10=best), which means it is more comfortable than most places in Iowa.

9.1 Summer - 4.4 Winter

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

Climate	Lyon, Iowa	United States
	Unlock	38.1 in.
	32.7 in.	Unlock
	Unlock	106.2 days
	208 days	Unlock
	84.3°	85.8°
	Unlock	21.7°
	6.9	Unlock
	Unlock	4.3
	1417 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 Lyon County with an average high temperature of 84.3°, which ranks it as about average compared to other places in Iowa. In Lyon County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lyon County are June, September and August.

In Lyon County, there are 15.2 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.

January has the coldest nighttime temperatures for Lyon County with an average of 6.2°. This is one of the coldest places in Iowa.

In Lyon County, there are 163.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Iowa.

In Lyon County, there are 26.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Iowa.

The humidity is usually comfortable in Lyon 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 Lyon County with 4.4 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Autumn with 40% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 28.3 inches in Lyon County means that it is one of the driest places in Iowa.

May is the rainiest month in Lyon County with 11.1 days of rain, and February is the driest month with only 4.2 rainy days. There are 87.2 rainy days annually in Lyon County, which is one of the least rainy places in Iowa. The rainiest season is Autumn 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 32.7 inches in Lyon County means that it is snowier than most places in Iowa. December is the snowiest month in Lyon County with 8.2 inches of snow, and 7 months of the year have significant snowfall.

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