30-year climate normals

York County Climate and Weather Averages

Hottest month — July

89.2°

average daily high. The coldest month is January, averaging a low of 29.5°F.

York County gets 44.11" of precipitation a year, and 27% of it falls in Jul, Aug, Sep.

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	51.1°	29.5°	3.60"
February	54.9°	32.2°	3.10"
March	63.3°	36.7°	4.10"
April	71.9°	46.9°	3.76"
May	79.2°	55.8°	3.66"
June	86.0°	64.4°	3.42"
July	89.2°	68.9°	4.44"
August	87.7°	67.4°	3.89"
September	82.1°	61.3°	3.45"
October	71.7°	48.6°	3.29"
November	61.2°	37.5°	3.37"
December	53.8°	32.2°	4.03"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 27% falling in the wettest three months (Jul, Aug, Sep).

January 3.60"

February 3.10"

March 4.10"

April 3.76"

May 3.66"

June 3.42"

July 4.44"

August 3.89"

September 3.45"

October 3.29"

November 3.37"

December 4.03"

Annual total 44.11"

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 1,565

Heating degree days How much heating the climate demands 3,457

Approximate annual cooling cost At 16.18¢/kWh, South Carolina average $253

Approximate annual electric heating cost Lower where heating is gas rather than electric $196

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 York County, where electricity is one line of eight.

Common questions

What is the weather like in York County?

York County averages a high of 89.2°F in July and a low of 29.5°F in January. Annual precipitation is 44.11 inches, with essentially no snow.

When is the rainy season in York County?

The wettest stretch is Jul, Aug, Sep, which accounts for 27% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in York County?

The average daily high in July, the hottest month, is 89.2°F. That drives 1,565 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in York County?

Effectively no. Measurable snowfall is rare in York County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station YORK 5 SSE, SC US (USC00389625), 3.4 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.