Union County, SC Climate

Union, SC County has a humid subtropical climate with hot summers and mild winters. Average summer temperatures reach the upper 80s while winter temperatures typically hover around 50 degrees Fahrenheit. Precipitation is abundant throughout most of the year, averaging around 44 inches annually. The area generally experiences mild and pleasant weather, making it an ideal place to live and visit.

Union County, South Carolina gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 221 sunny days per year in Union County. The US average is 205 sunny days.

Union 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 91 degrees
Winter Low: the January low is 30
Rain: averages 45 inches of rain a year
Snow: averages 2 inches of snow a year

Bestplaces Comfort Index

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

6.4 Summer - 6.9 Winter

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

Climate	Union, South Carolina	United States
	45.0 in.	38.1 in.
	2.1 in.	27.8 in.
	103.1 days	106.2 days
	221 days	205 days
	91.1°	85.8°
	29.8°	21.7°
	7.5	7
	4.8	4.3
	501 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 Union County with an average high temperature of 91.1°, which ranks it as about average compared to other places in South Carolina. In Union County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Union County are April, May and October.

In Union County, there are 53.1 days annually when the high temperature is over 90°, which is about average compared to other places in South Carolina.

January has the coldest nighttime temperatures for Union County with an average of 29.8°. This is colder than most places in South Carolina.

In Union County, there are 71.1 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

In Union 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 Union 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.

March is the wettest month in Union County with 4.5 inches of rain, and the driest month is May with 3.1 inches. The wettest season is Autumn with 26% of yearly precipitation and 24% occurs in Winter, which is the driest season. The annual rainfall of 45.0 inches in Union County means that it is drier than most places in South Carolina.

July is the rainiest month in Union County with 9.9 days of rain, and October is the driest month with only 6.6 rainy days. There are 103.1 rainy days annually in Union County, which is about average compared to other 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 2.1 inches in Union County means that it is snowier than most places in South Carolina. January is the snowiest month in Union County with 1.0 inches of snow, and 2 months of the year have significant snowfall.

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