Mercer County, KY Climate

Mercer County, KY has a humid subtropical climate with hot summers and mild winters. Summers are often sunny and humid, with temperatures ranging from the low 70's in the morning to the mid-90's during the day. Winters are usually mild, with temperatures ranging from the low 30's to the high 40's during the day. Rainfall is abundant throughout the year, though it is slightly less common during winter months. Overall, Mercer County enjoys a comfortable climate that many enjoy year-round.

Mercer County, Kentucky gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Mercer County averages 11 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 190 sunny days per year in Mercer County. The US average is 205 sunny days.

Mercer County gets some kind of precipitation, on average, 113 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 24
Rain: averages 46 inches of rain a year
Snow: averages 11 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Mercer County is 7.3 (10=best), which means it is one of the most pleasant places in Kentucky.

8.2 Summer - 5.6 Winter

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

Climate	Mercer, Kentucky	United States
	45.7 in.	38.1 in.
	10.8 in.	27.8 in.
	113.3 days	106.2 days
	190 days	205 days
	85.8°	85.8°
	24.0°	21.7°
	7.3	7
	4.1	4.3
	844 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 Mercer County with an average high temperature of 85.8°, which ranks it as cooler than most places in Kentucky. 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, May and June.

In Mercer County, there are 16.3 days annually when the high temperature is over 90°, which is cooler than most places in Kentucky.

January has the coldest nighttime temperatures for Mercer County with an average of 24.0°. This is about average compared to other places in Kentucky.

In Mercer County, there are 96.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Kentucky.

In Mercer County, there are 1.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Kentucky.

The humidity can be uncomfortably heavy or close in Mercer County during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in Mercer County.

May is the wettest month in Mercer County with 5.1 inches of rain, and the driest month is September with 3.1 inches. The wettest season is Summer with 28% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 45.7 inches in Mercer County means that it is drier than most places in Kentucky.

May is the rainiest month in Mercer County with 11.5 days of rain, and September is the driest month with only 7.0 rainy days. There are 113.3 rainy days annually in Mercer County, which is less rainy than most places in Kentucky. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 10.8 inches in Mercer County means that it is snowier than most places in Kentucky. February is the snowiest month in Mercer County with 3.9 inches of snow, and 4 months of the year have significant snowfall.

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