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United States › Iowa › Lucas County › Climate Station CHARITON 1 E, IA US Distance 3 mi Normals 1991–2020

30-year climate normals

Lucas County Climate and Weather Averages

Hottest month — July

84.5°

average daily high. The coldest month is January, averaging a low of 10.6°F.

Lucas County gets 37.32" of precipitation a year and 24.1" of snow, and 39% 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 31.0° 10.6° 0.96" 7.9"
February 35.7° 13.7° 1.40" 6.5"
March 48.5° 24.7° 1.90" 3.5"
April 61.0° 35.0° 4.15" 0.8"
May 70.7° 46.6° 5.39" 0.0"
June 80.3° 57.1° 4.92" 0.0"
July 84.5° 61.5° 4.21" 0.0"
August 83.1° 59.0° 4.40" 0.0"
September 76.1° 49.8° 3.71" 0.0"
October 63.8° 37.8° 2.98" 0.3"
November 48.6° 26.1° 2.03" 2.0"
December 36.5° 16.2° 1.27" 3.1"

Rainfall by month

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

January 0.96"
February 1.40"
March 1.90"
April 4.15"
May 5.39"
June 4.92"
July 4.21"
August 4.40"
September 3.71"
October 2.98"
November 2.03"
December 1.27"
Annual total 37.32"

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 732
Heating degree days How much heating the climate demands 6,801
Approximate annual cooling cost At 14.14¢/kWh, Iowa average $104
Approximate annual electric heating cost Lower where heating is gas rather than electric $337

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 Lucas County, where electricity is one line of eight.

Common questions

What is the weather like in Lucas County?

Lucas County averages a high of 84.5°F in July and a low of 10.6°F in January. Annual precipitation is 37.32 inches, including 24.1 inches of snow.

When is the rainy season in Lucas County?

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

How hot does it get in Lucas County?

The average daily high in July, the hottest month, is 84.5°F. That drives 732 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Lucas County?

Yes. Lucas County averages 24.1 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CHARITON 1 E, IA US (USC00131394), 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, Iowa residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.