30-year climate normals

Wilson County Climate and Weather Averages

Hottest month — July

90.2°

average daily high. The coldest month is January, averaging a low of 27.8°F.

Wilson County gets 54.45" of precipitation a year, and 28% of it falls in Mar, Apr, May.

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	47.4°	27.8°	4.67"
February	51.7°	30.2°	4.91"
March	60.7°	37.7°	4.97"
April	70.8°	46.4°	4.93"
May	79.2°	56.1°	5.61"
June	86.9°	65.0°	4.50"
July	90.2°	69.2°	4.84"
August	89.6°	66.9°	3.91"
September	83.6°	59.6°	3.85"
October	72.9°	46.5°	3.39"
November	60.5°	36.8°	3.71"
December	50.7°	31.1°	5.16"

Rainfall by month

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

January 4.67"

February 4.91"

March 4.97"

April 4.93"

May 5.61"

June 4.50"

July 4.84"

August 3.91"

September 3.85"

October 3.39"

November 3.71"

December 5.16"

Annual total 54.45"

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 1,670

Heating degree days How much heating the climate demands 3,802

Approximate annual cooling cost At 14.47¢/kWh, Tennessee average $242

Approximate annual electric heating cost Lower where heating is gas rather than electric $193

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 Wilson County, where electricity is one line of eight.

Common questions

What is the weather like in Wilson County?

Wilson County averages a high of 90.2°F in July and a low of 27.8°F in January. Annual precipitation is 54.45 inches, with essentially no snow.

When is the rainy season in Wilson County?

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

How hot does it get in Wilson County?

The average daily high in July, the hottest month, is 90.2°F. That drives 1,670 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Wilson County?

Effectively no. Measurable snowfall is rare in Wilson County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LEBANON, TN US (USC00405108), 5.7 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, Tennessee residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.