30-year climate normals

Montgomery County Climate and Weather Averages

Hottest month — July

88.9°

average daily high. The coldest month is January, averaging a low of 27.4°F.

Montgomery County gets 53.25" of precipitation a year, and 32% 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	46.7°	27.4°	4.33"
February	51.2°	30.1°	4.73"
March	60.0°	36.1°	5.68"
April	70.2°	44.9°	5.45"
May	77.8°	54.1°	5.66"
June	85.4°	63.1°	4.86"
July	88.9°	68.1°	3.91"
August	88.8°	66.5°	3.26"
September	82.9°	59.3°	3.30"
October	72.3°	47.5°	3.60"
November	60.1°	36.4°	3.97"
December	49.5°	30.5°	4.50"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 32% falling in the wettest three months (Mar, Apr, May).

January 4.33"

February 4.73"

March 5.68"

April 5.45"

May 5.66"

June 4.86"

July 3.91"

August 3.26"

September 3.30"

October 3.60"

November 3.97"

December 4.50"

Annual total 53.25"

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 1,484

Heating degree days How much heating the climate demands 3,916

Approximate annual cooling cost At 14.47¢/kWh, Tennessee average $215

Approximate annual electric heating cost Lower where heating is gas rather than electric $198

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 Montgomery County, where electricity is one line of eight.

Common questions

What is the weather like in Montgomery County?

Montgomery County averages a high of 88.9°F in July and a low of 27.4°F in January. Annual precipitation is 53.25 inches, with essentially no snow.

When is the rainy season in Montgomery County?

The wettest stretch is Mar, Apr, May, which accounts for 32% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Montgomery County?

The average daily high in July, the hottest month, is 88.9°F. That drives 1,484 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Montgomery County?

Effectively no. Measurable snowfall is rare in Montgomery County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CLARKSVILLE NO.2, TN US (USC00401795), 2.5 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.