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United States › Wisconsin › Lafayette County › Climate Station DARLINGTON WWTP, WI US Distance 2 mi Normals 1991–2020

30-year climate normals

Lafayette County Climate and Weather Averages

Hottest month — July

82.2°

average daily high. The coldest month is January, averaging a low of 8.4°F.

Lafayette County gets 37.64" of precipitation a year and 35.7" of snow, and 37% 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.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 27.3° 8.4° 1.31" 11.3"
February 31.8° 11.5° 1.43" 9.2"
March 44.3° 22.9° 2.02" 4.6"
April 57.7° 34.7° 3.89" 1.0"
May 69.4° 46.1° 4.18" 0.6"
June 78.9° 56.7° 5.29" 0.0"
July 82.2° 59.7° 4.22" 0.0"
August 80.5° 57.5° 4.36" 0.0"
September 73.8° 48.4° 4.10" 0.0"
October 60.9° 37.2° 2.80" 0.6"
November 45.5° 25.8° 2.35" 2.2"
December 32.6° 15.0° 1.69" 6.2"

Rainfall by month

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

January 1.31"
February 1.43"
March 2.02"
April 3.89"
May 4.18"
June 5.29"
July 4.22"
August 4.36"
September 4.10"
October 2.80"
November 2.35"
December 1.69"
Annual total 37.64"

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 570
Heating degree days How much heating the climate demands 7,384
Approximate annual cooling cost At 19.74¢/kWh, Wisconsin average $113
Approximate annual electric heating cost Lower where heating is gas rather than electric $510

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 Lafayette County, where electricity is one line of eight.

Common questions

What is the weather like in Lafayette County?

Lafayette County averages a high of 82.2°F in July and a low of 8.4°F in January. Annual precipitation is 37.64 inches, including 35.7 inches of snow.

When is the rainy season in Lafayette County?

The wettest stretch is Jun, Jul, Aug, which accounts for 37% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Lafayette County?

The average daily high in July, the hottest month, is 82.2°F. That drives 570 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Lafayette County?

Yes. Lafayette County averages 35.7 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station DARLINGTON WWTP, WI US (USC00472001), 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, Wisconsin residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.