30-year climate normals

Cass County Climate and Weather Averages

Hottest month — July

80.2°

average daily high. The coldest month is January, averaging a low of -2.8°F.

Cass County gets 23.86" of precipitation a year, and 47% 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	18.1°	-2.8°	0.43"
February	23.8°	0.8°	0.40"
March	36.9°	15.6°	1.00"
April	52.6°	29.3°	1.72"
May	66.5°	41.9°	3.09"
June	75.7°	52.8°	4.08"
July	80.2°	57.1°	3.93"
August	78.6°	54.8°	2.78"
September	69.2°	46.3°	2.70"
October	53.6°	33.5°	2.40"
November	36.4°	19.3°	0.81"
December	23.1°	5.4°	0.52"

Rainfall by month

Cass County has a distinct wet season. 47% of the year's precipitation arrives in May, Jun, Jul.

January 0.43"

February 0.40"

March 1.00"

April 1.72"

May 3.09"

June 4.08"

July 3.93"

August 2.78"

September 2.70"

October 2.40"

November 0.81"

December 0.52"

Annual total 23.86"

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 367

Heating degree days How much heating the climate demands 9,305

Approximate annual cooling cost At 16.95¢/kWh, Minnesota average $62

Approximate annual electric heating cost Lower where heating is gas rather than electric $552

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 80.2°F in July and a low of -2.8°F in January. Annual precipitation is 23.86 inches, with essentially no snow.

When is the rainy season in Cass County?

The wettest stretch is May, Jun, Jul, which accounts for 47% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Cass County?

The average daily high in July, the hottest month, is 80.2°F. That drives 367 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 PARK RAPIDS MUNI AP, MN US (USW00094967), 34.8 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, Minnesota residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.