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United States › Illinois › Kendall County › Climate Station CHICAGO AURORA MUNI AP, IL US Distance 12.8 mi Normals 1991–2020

30-year climate normals

Kendall County Climate and Weather Averages

Hottest month — July

84.4°

average daily high. The coldest month is January, averaging a low of 14.7°F.

Kendall County gets 33.84" of precipitation a year, and 35% 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.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 30.5° 14.7° 1.30"
February 34.9° 18.0° 1.41"
March 47.5° 28.1° 2.21"
April 60.4° 37.2° 3.60"
May 71.9° 49.0° 4.06"
June 81.4° 58.5° 3.98"
July 84.4° 61.8° 3.71"
August 82.2° 59.5° 3.35"
September 76.2° 51.6° 3.01"
October 63.3° 40.6° 3.23"
November 48.1° 29.2° 2.30"
December 35.8° 20.6° 1.68"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 35% falling in the wettest three months (May, Jun, Jul).

January 1.30"
February 1.41"
March 2.21"
April 3.60"
May 4.06"
June 3.98"
July 3.71"
August 3.35"
September 3.01"
October 3.23"
November 2.30"
December 1.68"
Annual total 33.84"

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 781
Heating degree days How much heating the climate demands 6,433
Approximate annual cooling cost At 23.85¢/kWh, Illinois average $186
Approximate annual electric heating cost Lower where heating is gas rather than electric $537

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 Kendall County, where electricity is one line of eight.

Common questions

What is the weather like in Kendall County?

Kendall County averages a high of 84.4°F in July and a low of 14.7°F in January. Annual precipitation is 33.84 inches, with essentially no snow.

When is the rainy season in Kendall County?

The wettest stretch is May, Jun, Jul, which accounts for 35% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Kendall County?

The average daily high in July, the hottest month, is 84.4°F. That drives 781 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Kendall County?

Effectively no. Measurable snowfall is rare in Kendall County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CHICAGO AURORA MUNI AP, IL US (USW00004808), 12.8 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, Illinois residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.