30-year climate normals

Greenwood County Climate and Weather Averages

Hottest month — July

90.2°

average daily high. The coldest month is January, averaging a low of 31.8°F.

Greenwood County gets 42.01" of precipitation a year, and 28% of it falls in Jan, Feb, Mar.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip
January	53.4°	31.8°	3.91"
February	57.3°	34.8°	3.61"
March	65.0°	40.8°	4.17"
April	73.4°	48.3°	2.79"
May	80.5°	56.9°	2.99"
June	86.8°	65.1°	3.72"
July	90.2°	68.5°	3.83"
August	88.7°	67.6°	3.25"
September	83.2°	61.6°	3.35"
October	73.5°	49.1°	3.03"
November	63.2°	38.8°	3.32"
December	55.5°	33.8°	4.04"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 28% falling in the wettest three months (Jan, Feb, Mar).

January 3.91"

February 3.61"

March 4.17"

April 2.79"

May 2.99"

June 3.72"

July 3.83"

August 3.25"

September 3.35"

October 3.03"

November 3.32"

December 4.04"

Annual total 42.01"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 1,676

Heating degree days How much heating the climate demands 3,048

Approximate annual cooling cost At 16.18¢/kWh, South Carolina average $271

Approximate annual electric heating cost Lower where heating is gas rather than electric $173

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Greenwood County, where electricity is one line of eight.

Common questions

What is the weather like in Greenwood County?

Greenwood County averages a high of 90.2°F in July and a low of 31.8°F in January. Annual precipitation is 42.01 inches, with essentially no snow.

When is the rainy season in Greenwood County?

The wettest stretch is Jan, Feb, Mar, which accounts for 28% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Greenwood County?

The average daily high in July, the hottest month, is 90.2°F. That drives 1,676 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Greenwood County?

Effectively no. Measurable snowfall is rare in Greenwood County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station GREENWOOD CO AP, SC US (USW00053874), 6.7 miles from the county centroid.
Heating and cooling degree days — NOAA, same station and period.
Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, South Carolina residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.