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United States › Virginia › Henry County › Climate Station MARTINSVILLE FLTR PLT, VA US Distance 8.6 mi Normals 1991–2020

30-year climate normals

Henry County Climate and Weather Averages

Hottest month — July

88.0°

average daily high. The coldest month is January, averaging a low of 23.8°F.

Henry County gets 47.35" of precipitation a year and 9.4" of snow, and 28% 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.

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 48.4° 23.8° 3.83" 3.3"
February 52.2° 25.5° 3.04" 2.4"
March 60.3° 31.6° 4.08" 1.7"
April 70.8° 40.4° 3.60" 0.0"
May 77.7° 50.3° 4.50" 0.0"
June 84.7° 59.2° 4.41" 0.0"
July 88.0° 64.0° 4.01" 0.0"
August 85.9° 62.6° 4.17" 0.0"
September 79.8° 55.5° 5.09" 0.0"
October 70.7° 42.8° 3.57" 0.0"
November 60.3° 31.7° 3.33" 0.0"
December 51.1° 26.3° 3.72" 2.0"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 28% falling in the wettest three months (Jul, Aug, Sep).

January 3.83"
February 3.04"
March 4.08"
April 3.60"
May 4.50"
June 4.41"
July 4.01"
August 4.17"
September 5.09"
October 3.57"
November 3.33"
December 3.72"
Annual total 47.35"

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 1,085
Heating degree days How much heating the climate demands 4,342
Approximate annual cooling cost At 17.61¢/kWh, Virginia average $191
Approximate annual electric heating cost Lower where heating is gas rather than electric $268

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 Henry County, where electricity is one line of eight.

Common questions

What is the weather like in Henry County?

Henry County averages a high of 88.0°F in July and a low of 23.8°F in January. Annual precipitation is 47.35 inches, including 9.4 inches of snow.

When is the rainy season in Henry County?

The wettest stretch is Jul, Aug, Sep, which accounts for 28% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Henry County?

The average daily high in July, the hottest month, is 88.0°F. That drives 1,085 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Henry County?

Yes. Henry County averages 9.4 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station MARTINSVILLE FLTR PLT, VA US (USC00445300), 8.6 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.