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United States › Ohio › Henry County › Climate Station NAPOLEON, OH US Distance 4.9 mi Normals 1991–2020

30-year climate normals

Henry County Climate and Weather Averages

Hottest month — July

83.9°

average daily high. The coldest month is January, averaging a low of 17.4°F.

Henry County gets 37.32" of precipitation a year and 24.7" of snow, and 30% 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 32.8° 17.4° 2.53" 9.5"
February 35.5° 18.8° 2.25" 6.0"
March 46.1° 27.6° 2.60" 4.3"
April 59.6° 37.2° 3.65" 0.0"
May 71.5° 49.9° 4.02" 0.0"
June 80.8° 59.8° 3.67" 0.0"
July 83.9° 63.1° 3.45" 0.0"
August 83.0° 60.4° 3.71" 0.0"
September 76.3° 52.8° 3.31" 0.0"
October 63.7° 42.3° 2.74" 0.0"
November 49.1° 32.0° 2.86" 0.4"
December 37.4° 23.8° 2.53" 4.5"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 30% falling in the wettest three months (Apr, May, Jun).

January 2.53"
February 2.25"
March 2.60"
April 3.65"
May 4.02"
June 3.67"
July 3.45"
August 3.71"
September 3.31"
October 2.74"
November 2.86"
December 2.53"
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 827
Heating degree days How much heating the climate demands 6,183
Approximate annual cooling cost At 19.52¢/kWh, Ohio average $161
Approximate annual electric heating cost Lower where heating is gas rather than electric $422

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 Henry County, where electricity is one line of eight.

Common questions

What is the weather like in Henry County?

Henry County averages a high of 83.9°F in July and a low of 17.4°F in January. Annual precipitation is 37.32 inches, including 24.7 inches of snow.

When is the rainy season in Henry County?

The wettest stretch is Apr, May, Jun, which accounts for 30% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Henry County?

The average daily high in July, the hottest month, is 83.9°F. That drives 827 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Henry County?

Yes. Henry County averages 24.7 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station NAPOLEON, OH US (USC00335669), 4.9 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, Ohio residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.