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United States › Indiana › Harrison County › Climate Station LOUISVILLE INTL AP, KY US Distance 19.8 mi Normals 1991–2020

30-year climate normals

Harrison County Climate and Weather Averages

Hottest month — July

89.0°

average daily high. The coldest month is January, averaging a low of 27.8°F.

Harrison County gets 48.34" of precipitation a year and 13.4" of snow, and 30% of it falls in Mar, Apr, May.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 43.6° 27.8° 3.39" 4.5"
February 48.3° 30.7° 3.41" 4.1"
March 58.1° 38.6° 4.60" 2.1"
April 69.6° 48.5° 4.80" 0.1"
May 77.8° 58.7° 5.18" 0.0"
June 85.7° 67.2° 4.27" 0.0"
July 89.0° 70.8° 4.05" 0.0"
August 88.4° 69.5° 3.71" 0.0"
September 82.2° 61.9° 3.66" 0.0"
October 70.5° 50.1° 3.72" 0.1"
November 57.6° 39.4° 3.42" 0.3"
December 47.2° 32.1° 4.13" 2.2"

Rainfall by month

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

January 3.39"
February 3.41"
March 4.60"
April 4.80"
May 5.18"
June 4.27"
July 4.05"
August 3.71"
September 3.66"
October 3.72"
November 3.42"
December 4.13"
Annual total 48.34"

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 1,742
Heating degree days How much heating the climate demands 3,936
Approximate annual cooling cost At 18.15¢/kWh, Indiana average $316
Approximate annual electric heating cost Lower where heating is gas rather than electric $250

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 Harrison County, where electricity is one line of eight.

Common questions

What is the weather like in Harrison County?

Harrison County averages a high of 89.0°F in July and a low of 27.8°F in January. Annual precipitation is 48.34 inches, including 13.4 inches of snow.

When is the rainy season in Harrison County?

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

How hot does it get in Harrison County?

The average daily high in July, the hottest month, is 89.0°F. That drives 1,742 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Harrison County?

Yes. Harrison County averages 13.4 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LOUISVILLE INTL AP, KY US (USW00093821), 19.8 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, Indiana residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.