30-year climate normals

Clinton County Climate and Weather Averages

Hottest month — July

84.1°

average daily high. The coldest month is January, averaging a low of 21.4°F.

Clinton County gets 42.4" of precipitation a year, and 32% of it falls in Apr, May, Jun.

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	36.8°	21.4°	2.91"
February	40.7°	23.7°	2.73"
March	50.7°	31.7°	3.63"
April	63.6°	41.7°	4.46"
May	72.9°	52.2°	4.63"
June	81.5°	60.3°	4.64"
July	84.1°	63.2°	3.88"
August	82.9°	61.1°	3.16"
September	77.3°	54.0°	2.93"
October	65.1°	43.8°	3.20"
November	52.0°	33.8°	3.05"
December	41.3°	26.8°	3.18"

Rainfall by month

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

January 2.91"

February 2.73"

March 3.63"

April 4.46"

May 4.63"

June 4.64"

July 3.88"

August 3.16"

September 2.93"

October 3.20"

November 3.05"

December 3.18"

Annual total 42.4"

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 880

Heating degree days How much heating the climate demands 5,364

Approximate annual cooling cost At 19.52¢/kWh, Ohio average $172

Approximate annual electric heating cost Lower where heating is gas rather than electric $366

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 Clinton County, where electricity is one line of eight.

Common questions

What is the weather like in Clinton County?

Clinton County averages a high of 84.1°F in July and a low of 21.4°F in January. Annual precipitation is 42.4 inches, with essentially no snow.

When is the rainy season in Clinton County?

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

How hot does it get in Clinton County?

The average daily high in July, the hottest month, is 84.1°F. That drives 880 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Clinton County?

Effectively no. Measurable snowfall is rare in Clinton County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CINCINNATI, OH US (USW00013841), 0.9 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, Ohio residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.