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United States › Illinois › Jo Daviess County › Climate Station ELIZABETH, IL US Distance 3.3 mi Normals 1991 to 2020
This weather has a price Keeping the median Jo Daviess County home comfortable runs roughly $604 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Jo Daviess County Climate and Weather Averages

Hottest month: July

83.3°

average daily high. The coldest month is January, averaging a low of 10.4°F.

Jo Daviess County gets 39.35" of precipitation a year and 30.2" of snow, and 38% 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 PrecipSnow
January 28.0° 10.4° 1.43" 8.4"
February 32.8° 14.3° 1.74" 8.1"
March 45.5° 25.4° 2.33" 3.5"
April 58.8° 35.8° 3.85" 1.1"
May 70.2° 47.1° 4.29" 0.0"
June 79.8° 57.7° 5.82" 0.0"
July 83.3° 61.2° 4.65" 0.0"
August 81.4° 58.8° 4.02" 0.0"
September 74.6° 50.0° 3.85" 0.0"
October 62.1° 38.9° 3.04" 0.3"
November 46.6° 27.8° 2.44" 1.9"
December 33.6° 16.9° 1.89" 6.9"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 38% falling in the wettest three months (May, Jun, Jul).

January 1.43"
February 1.74"
March 2.33"
April 3.85"
May 4.29"
June 5.82"
July 4.65"
August 4.02"
September 3.85"
October 3.04"
November 2.44"
December 1.89"
Annual total 39.35"

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 677
Heating degree days How much heating the climate demands 7,003
Approximate annual cooling cost At 19.32¢/kWh, Illinois average $131
Approximate annual electric heating cost Lower where heating is gas rather than electric $474

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 Jo Daviess County, where electricity is one line of eight.

Common questions

What is the weather like in Jo Daviess County?

Jo Daviess County averages a high of 83.3°F in July and a low of 10.4°F in January. Annual precipitation is 39.35 inches, including 30.2 inches of snow.

When is the rainy season in Jo Daviess County?

The wettest stretch is May, Jun, Jul, which accounts for 38% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Jo Daviess County?

The average daily high in July, the hottest month, is 83.3°F. That drives 677 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Jo Daviess County?

Yes. Jo Daviess County averages 30.2 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station ELIZABETH, IL US (USC00112745), 3.3 miles from the county centroid.
  • Heating and cooling degree days: NOAA, same station and period.
  • Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
  • 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.