Jefferson County, KY Climate

The climate in Jefferson County, KY is warm and humid throughout the year. Summers are hot and humid with daily temperatures averaging in the mid-80s Fahrenheit, while winters are mild with temperatures typically ranging between 30 to 50 degrees Fahrenheit. Precipitation is abundant throughout the year, with an annual average of 40 inches of rainfall. Snowfall is moderate in the winter months, usually ranging from 2-4 inches a month. The area experiences all four seasons, making it a great place to enjoy outdoor activities regardless of the season.

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

Jefferson County averages 8 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 195 sunny days per year in Jefferson County. The US average is 205 sunny days.

Jefferson County gets some kind of precipitation, on average, 114 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 88 degrees
Winter Low: the January low is 26
Rain: averages 46 inches of rain a year
Snow: averages 8 inches of snow a year

Bestplaces Comfort Index

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

7.6 Summer - 5.7 Winter

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

Climate	Jefferson, Kentucky	United States
	45.5 in.	38.1 in.
	8.4 in.	27.8 in.
	114.3 days	106.2 days
	195 days	205 days
	87.5°	85.8°
	25.6°	21.7°
	7.3	7
	4.3	4.3
	562 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 Jefferson County with an average high temperature of 87.5°, which ranks it as about average compared to other places in Kentucky. In Jefferson County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jefferson County are May, September and June.

In Jefferson County, there are 29.2 days annually when the high temperature is over 90°, which is hotter than most places in Kentucky.

January has the coldest nighttime temperatures for Jefferson County with an average of 25.6°. This is warmer than most places in Kentucky.

In Jefferson County, there are 81.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Kentucky.

In Jefferson County, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Kentucky.

The humidity can be uncomfortably heavy or close in Jefferson 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 Jefferson County.

May is the wettest month in Jefferson County with 5.1 inches of rain, and the driest month is February with 3.2 inches. The wettest season is Summer with 29% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 45.5 inches in Jefferson County means that it is drier than most places in Kentucky.

May is the rainiest month in Jefferson County with 11.6 days of rain, and September is the driest month with only 7.1 rainy days. There are 114.3 rainy days annually in Jefferson County, which is about average compared to other places in Kentucky. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 8.4 inches in Jefferson County means that it is about average compared to other places in Kentucky. February is the snowiest month in Jefferson County with 2.8 inches of snow, and 4 months of the year have significant snowfall.

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