30-year climate normals

Cass County Climate and Weather Averages

Hottest month — July

81.5°

average daily high. The coldest month is January, averaging a low of 16.2°F.

Cass County gets 41.73" of precipitation a year, and 30% 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	31.1°	16.2°	3.10"
February	34.2°	17.6°	2.41"
March	44.4°	25.2°	2.44"
April	57.4°	35.5°	3.69"
May	68.6°	47.1°	4.19"
June	78.0°	56.9°	4.26"
July	81.5°	60.0°	4.09"
August	79.7°	58.2°	4.12"
September	73.5°	50.6°	3.38"
October	60.9°	39.7°	4.33"
November	47.2°	30.8°	2.90"
December	36.2°	22.5°	2.82"

Rainfall by month

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

January 3.10"

February 2.41"

March 2.44"

April 3.69"

May 4.19"

June 4.26"

July 4.09"

August 4.12"

September 3.38"

October 4.33"

November 2.90"

December 2.82"

Annual total 41.73"

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 583

Heating degree days How much heating the climate demands 6,730

Approximate annual cooling cost At 22.01¢/kWh, Michigan average $128

Approximate annual electric heating cost Lower where heating is gas rather than electric $518

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 Cass County, where electricity is one line of eight.

Common questions

What is the weather like in Cass County?

Cass County averages a high of 81.5°F in July and a low of 16.2°F in January. Annual precipitation is 41.73 inches, with essentially no snow.

When is the rainy season in Cass County?

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

How hot does it get in Cass County?

The average daily high in July, the hottest month, is 81.5°F. That drives 583 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Cass County?

Effectively no. Measurable snowfall is rare in Cass County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station DOWAGIAC 1 W, MI US (USC00202250), 8.3 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.