30-year climate normals

Clinton County Climate and Weather Averages

Hottest month — July

87.3°

average daily high. The coldest month is January, averaging a low of 15.1°F.

Clinton County gets 39.1" of precipitation a year, and 37% 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	35.1°	15.1°	1.14"
February	40.3°	19.1°	1.30"
March	52.1°	30.7°	2.52"
April	63.4°	39.9°	3.72"
May	73.6°	52.7°	5.30"
June	83.0°	63.1°	4.69"
July	87.3°	67.1°	4.64"
August	85.5°	64.9°	4.22"
September	78.5°	55.5°	4.24"
October	66.2°	43.9°	2.91"
November	51.5°	31.7°	2.66"
December	39.7°	21.2°	1.76"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 37% falling in the wettest three months (May, Jun, Jul).

January 1.14"

February 1.30"

March 2.52"

April 3.72"

May 5.30"

June 4.69"

July 4.64"

August 4.22"

September 4.24"

October 2.91"

November 2.66"

December 1.76"

Annual total 39.1"

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 1,173

Heating degree days How much heating the climate demands 5,673

Approximate annual cooling cost At 13.68¢/kWh, Missouri average $160

Approximate annual electric heating cost Lower where heating is gas rather than electric $272

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 87.3°F in July and a low of 15.1°F in January. Annual precipitation is 39.1 inches, with essentially no snow.

When is the rainy season in Clinton County?

The wettest stretch is May, Jun, Jul, which accounts for 37% 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 87.3°F. That drives 1,173 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 CAMERON, MO US (USC00231216), 12.2 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, Missouri residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.