Chester County, SC Climate

Chester, SC County has a humid subtropical climate, characterized by hot summers and mild winters. The average temperature in the summer is around 84°F, with highs occasionally reaching up to 95°F during the day. In the winter months, temperatures dip down to around 48°F on average, although it can get much colder at night. Rainfall is abundant year-round, with an average of 52 inches per year. Snowfall is rare, but can occur a few times each winter season.

Chester County, South Carolina gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Chester County averages 2 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 215 sunny days per year in Chester County. The US average is 205 sunny days.

Chester County gets some kind of precipitation, on average, 96 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 91 degrees
Winter Low: the January low is 30
Rain: averages 44 inches of rain a year
Snow: averages 2 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Chester County is 7.5 (10=best), which means it is one of the most pleasant places in South Carolina.

6.3 Summer - 6.9 Winter

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

Climate	Chester, South Carolina	United States
	43.7 in.	38.1 in.
	2.0 in.	27.8 in.
	95.5 days	106.2 days
	215 days	205 days
	90.8°	85.8°
	30.4°	21.7°
	7.5	7
	4.8	4.3
	491 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 Chester County with an average high temperature of 90.8°, which ranks it as cooler than most places in South Carolina. In Chester County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chester County are May, April and October.

In Chester County, there are 50.7 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

January has the coldest nighttime temperatures for Chester County with an average of 30.4°. This is colder than most places in South Carolina.

In Chester County, there are 63.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

In Chester County, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Carolina.

Humidity in Chester County can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from June-September and the most comfortable months are October-May.

August is the wettest month in Chester County with 4.5 inches of rain, and the driest month is May with 2.9 inches. The wettest season is Autumn with 29% of yearly precipitation and 23% occurs in Summer, which is the driest season. The annual rainfall of 43.7 inches in Chester County means that it is one of the driest places in South Carolina.

July is the rainiest month in Chester County with 9.1 days of rain, and October is the driest month with only 6.1 rainy days. There are 95.5 rainy days annually in Chester County, which is less rainy than most places in South Carolina. The rainiest season is Autumn when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 2.0 inches in Chester County means that it is snowier than most places in South Carolina. February is the snowiest month in Chester County with 0.8 inches of snow, and 2 months of the year have significant snowfall.

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