30-year climate normals

Clinton County Climate and Weather Averages

Hottest month — July

83.2°

average daily high. The coldest month is January, averaging a low of 17.7°F.

Clinton County gets 34" 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	30.6°	17.7°	2.07"
February	33.0°	18.6°	1.80"
March	43.7°	26.1°	1.93"
April	56.9°	36.4°	3.58"
May	69.3°	48.2°	3.83"
June	78.9°	58.7°	3.35"
July	83.2°	62.3°	3.20"
August	81.3°	60.7°	3.46"
September	74.8°	53.1°	2.87"
October	61.7°	42.6°	3.25"
November	47.3°	32.8°	2.84"
December	36.0°	24.1°	1.82"

Rainfall by month

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

January 2.07"

February 1.80"

March 1.93"

April 3.58"

May 3.83"

June 3.35"

July 3.20"

August 3.46"

September 2.87"

October 3.25"

November 2.84"

December 1.82"

Annual total 34"

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 745

Heating degree days How much heating the climate demands 6,507

Approximate annual cooling cost At 22.01¢/kWh, Michigan average $164

Approximate annual electric heating cost Lower where heating is gas rather than electric $501

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 83.2°F in July and a low of 17.7°F in January. Annual precipitation is 34 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 83.2°F. That drives 745 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 SAINT JOHNS, MI US (USC00207280), 4.6 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, Michigan residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.