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United States › Virginia › Clarke County › Climate Station MARTINSBURG E WV RGNL AP, WV US Distance 19.8 mi Normals 1991–2020

30-year climate normals

Clarke County Climate and Weather Averages

Hottest month — July

86.9°

average daily high. The coldest month is January, averaging a low of 23.5°F.

Clarke County gets 38.97" of precipitation a year, and 30% of it falls in May, Jun, Jul.

Temperature through the year

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

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 41.3° 23.5° 2.60"
February 44.7° 25.3° 2.14"
March 53.5° 32.2° 3.42"
April 65.4° 41.8° 3.36"
May 74.0° 51.0° 4.05"
June 82.4° 59.8° 3.85"
July 86.9° 64.5° 3.78"
August 85.0° 62.5° 3.02"
September 78.1° 55.3° 4.03"
October 66.7° 43.7° 2.99"
November 55.1° 34.2° 2.73"
December 44.8° 27.1° 3.00"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 30% falling in the wettest three months (May, Jun, Jul).

January 2.60"
February 2.14"
March 3.42"
April 3.36"
May 4.05"
June 3.85"
July 3.78"
August 3.02"
September 4.03"
October 2.99"
November 2.73"
December 3.00"
Annual total 38.97"

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 1,013
Heating degree days How much heating the climate demands 4,947
Approximate annual cooling cost At 17.61¢/kWh, Virginia average $178
Approximate annual electric heating cost Lower where heating is gas rather than electric $305

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 Clarke County, where electricity is one line of eight.

Common questions

What is the weather like in Clarke County?

Clarke County averages a high of 86.9°F in July and a low of 23.5°F in January. Annual precipitation is 38.97 inches, with essentially no snow.

When is the rainy season in Clarke County?

The wettest stretch is May, Jun, Jul, which accounts for 30% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Clarke County?

The average daily high in July, the hottest month, is 86.9°F. That drives 1,013 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Clarke County?

Effectively no. Measurable snowfall is rare in Clarke County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station MARTINSBURG E WV RGNL AP, WV US (USW00013734), 19.8 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, Virginia residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.