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United States › Illinois › Moultrie County › Climate Station SULLIVAN 3S, IL US Distance 5.3 mi Normals 1991–2020

30-year climate normals

Moultrie County Climate and Weather Averages

Hottest month — July

86.0°

average daily high. The coldest month is January, averaging a low of 18.5°F.

Moultrie County gets 41.6" of precipitation a year and 12.9" of snow, and 35% of it falls in Apr, May, Jun.

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 35.3° 18.5° 2.41" 5.2"
February 40.2° 21.9° 2.23" 2.4"
March 51.2° 31.1° 2.83" 1.0"
April 64.7° 41.9° 4.48" 0.2"
May 74.6° 53.4° 4.98" 0.0"
June 83.2° 62.7° 4.95" 0.0"
July 86.0° 65.2° 4.35" 0.0"
August 85.1° 62.3° 3.16" 0.0"
September 80.1° 54.6° 2.71" 0.0"
October 67.3° 43.9° 3.30" 0.0"
November 52.1° 33.0° 3.45" 0.4"
December 40.3° 24.5° 2.75" 3.7"

Rainfall by month

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

January 2.41"
February 2.23"
March 2.83"
April 4.48"
May 4.98"
June 4.95"
July 4.35"
August 3.16"
September 2.71"
October 3.30"
November 3.45"
December 2.75"
Annual total 41.6"

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 1,128
Heating degree days How much heating the climate demands 5,449
Approximate annual cooling cost At 23.85¢/kWh, Illinois average $269
Approximate annual electric heating cost Lower where heating is gas rather than electric $455

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 Moultrie County, where electricity is one line of eight.

Common questions

What is the weather like in Moultrie County?

Moultrie County averages a high of 86.0°F in July and a low of 18.5°F in January. Annual precipitation is 41.6 inches, including 12.9 inches of snow.

When is the rainy season in Moultrie County?

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

How hot does it get in Moultrie County?

The average daily high in July, the hottest month, is 86.0°F. That drives 1,128 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Moultrie County?

Yes. Moultrie County averages 12.9 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station SULLIVAN 3S, IL US (USC00118389), 5.3 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.