Mercer County, MO Climate

Mercer, MO County has a humid continental climate with hot summers and cold winters. Annual temperatures range from an average low of 25°F in the winter to an average high of 90°F during the summer months. The area receives slightly above average amounts of precipitation throughout the year, on average 30 inches per year. Snowfall in Mercer can range from light dustings to heavy snowfalls depending on the season, with heavier snowfall typically occurring during the months of December and January.

Mercer County, Missouri gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Mercer County averages 19 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Mercer County. The US average is 205 sunny days.

Mercer County gets some kind of precipitation, on average, 103 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 15
Rain: averages 39 inches of rain a year
Snow: averages 19 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Mercer County is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

8.5 Summer - 5.3 Winter

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

Climate	Mercer, Missouri	United States
	Unlock	38.1 in.
	19.0 in.	Unlock
	Unlock	106.2 days
	202 days	Unlock
	86.5°	85.8°
	Unlock	21.7°
	7.2	Unlock
	Unlock	4.3
	964 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 Mercer County with an average high temperature of 86.5°, which ranks it as one of the coolest places in Missouri. In Mercer County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mercer County are September, June and May.

In Mercer County, there are 22.4 days annually when the high temperature is over 90°, which is one of the coolest places in Missouri.

January has the coldest nighttime temperatures for Mercer County with an average of 15.1°. This is one of the coldest places in Missouri.

In Mercer County, there are 129.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Missouri.

In Mercer County, there are 9.7 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Missouri.

The humidity is usually comfortable in Mercer 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 Mercer County are July, August and June.

May is the wettest month in Mercer County with 5.4 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 37% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 38.7 inches in Mercer County means that it is one of the driest places in Missouri.

May is the rainiest month in Mercer County with 12.5 days of rain, and January is the driest month with only 5.3 rainy days. There are 102.7 rainy days annually in Mercer County, which is rainier than most places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 18% chance of a rainy day.

An annual snowfall of 19.0 inches in Mercer County means that it is one of the snowiest places in Missouri. December is the snowiest month in Mercer County with 5.2 inches of snow, and 5 months of the year have significant snowfall.

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