30-year climate normals

Hardin County Climate and Weather Averages

Hottest month — July

91.3°

average daily high. The coldest month is January, averaging a low of 30.3°F.

Hardin County gets 59.18" of precipitation a year, and 30% 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	51.1°	30.3°	4.88"
February	55.7°	33.0°	5.36"
March	64.9°	40.4°	5.64"
April	73.9°	49.2°	5.73"
May	81.3°	58.7°	6.19"
June	88.2°	66.5°	4.40"
July	91.3°	70.1°	4.91"
August	90.9°	68.6°	4.11"
September	85.6°	61.4°	4.28"
October	75.8°	49.3°	3.88"
November	63.9°	39.5°	4.19"
December	54.0°	33.5°	5.61"

Rainfall by month

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

January 4.88"

February 5.36"

March 5.64"

April 5.73"

May 6.19"

June 4.40"

July 4.91"

August 4.11"

September 4.28"

October 3.88"

November 4.19"

December 5.61"

Annual total 59.18"

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 1,930

Heating degree days How much heating the climate demands 3,157

Approximate annual cooling cost At 14.47¢/kWh, Tennessee average $279

Approximate annual electric heating cost Lower where heating is gas rather than electric $160

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 Hardin County, where electricity is one line of eight.

Common questions

What is the weather like in Hardin County?

Hardin County averages a high of 91.3°F in July and a low of 30.3°F in January. Annual precipitation is 59.18 inches, with essentially no snow.

When is the rainy season in Hardin County?

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

How hot does it get in Hardin County?

The average daily high in July, the hottest month, is 91.3°F. That drives 1,930 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Hardin County?

Effectively no. Measurable snowfall is rare in Hardin County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station SAVANNAH 6 SW, TN US (USC00408108), 8.4 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, Tennessee residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.