30-year climate normals

Nelson County Climate and Weather Averages

Hottest month — July

87.3°

average daily high. The coldest month is January, averaging a low of 25.5°F.

Nelson County gets 46.34" of precipitation a year, and 28% 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.

Month	Avg high	Avg low	Precip
January	48.0°	25.5°	3.45"
February	52.0°	27.6°	2.68"
March	59.8°	33.6°	3.69"
April	70.2°	42.8°	3.59"
May	76.5°	52.3°	4.60"
June	83.6°	60.9°	4.52"
July	87.3°	65.6°	3.68"
August	85.7°	64.1°	4.42"
September	79.9°	57.0°	4.39"
October	71.1°	44.6°	3.75"
November	61.0°	34.6°	3.56"
December	51.0°	28.7°	4.01"

Rainfall by month

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

January 3.45"

February 2.68"

March 3.69"

April 3.59"

May 4.60"

June 4.52"

July 3.68"

August 4.42"

September 4.39"

October 3.75"

November 3.56"

December 4.01"

Annual total 46.34"

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 1,174

Heating degree days How much heating the climate demands 4,131

Approximate annual cooling cost At 17.61¢/kWh, Virginia average $207

Approximate annual electric heating cost Lower where heating is gas rather than electric $255

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 Nelson County, where electricity is one line of eight.

Common questions

What is the weather like in Nelson County?

Nelson County averages a high of 87.3°F in July and a low of 25.5°F in January. Annual precipitation is 46.34 inches, with essentially no snow.

When is the rainy season in Nelson County?

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

How hot does it get in Nelson County?

The average daily high in July, the hottest month, is 87.3°F. That drives 1,174 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Nelson County?

Effectively no. Measurable snowfall is rare in Nelson County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station TYE RVR 1 SE, VA US (USC00448600), 10.9 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.