30-year climate normals

Fond du Lac County Climate and Weather Averages

Hottest month — July

81.9°

average daily high. The coldest month is January, averaging a low of 11.1°F.

Fond du Lac County gets 28.39" of precipitation a year, and 39% of it falls in Jun, Jul, Aug.

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	26.7°	11.1°	0.73"
February	30.3°	13.8°	0.69"
March	42.1°	24.3°	1.72"
April	55.7°	35.1°	2.79"
May	68.2°	46.6°	3.31"
June	78.1°	56.8°	4.14"
July	81.9°	60.8°	3.40"
August	79.5°	59.2°	3.45"
September	72.6°	51.2°	2.86"
October	59.3°	39.8°	2.54"
November	44.7°	28.7°	1.84"
December	32.4°	17.9°	0.92"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 39% falling in the wettest three months (Jun, Jul, Aug).

January 0.73"

February 0.69"

March 1.72"

April 2.79"

May 3.31"

June 4.14"

July 3.40"

August 3.45"

September 2.86"

October 2.54"

November 1.84"

December 0.92"

Annual total 28.39"

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 7,275

Approximate annual cooling cost At 19.74¢/kWh, Wisconsin average $115

Approximate annual electric heating cost Lower where heating is gas rather than electric $503

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 Fond du Lac County, where electricity is one line of eight.

Common questions

What is the weather like in Fond du Lac County?

Fond du Lac County averages a high of 81.9°F in July and a low of 11.1°F in January. Annual precipitation is 28.39 inches, with essentially no snow.

When is the rainy season in Fond du Lac County?

The wettest stretch is Jun, Jul, Aug, which accounts for 39% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Fond du Lac County?

The average daily high in July, the hottest month, is 81.9°F. That drives 583 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Fond du Lac County?

Effectively no. Measurable snowfall is rare in Fond du Lac County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station FOND DU LAC CO AP, WI US (USW00004840), 1.1 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, Wisconsin residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.