30-year climate normals

Bullitt County Climate and Weather Averages

Hottest month — July

87.7°

average daily high. The coldest month is January, averaging a low of 26.0°F.

Bullitt County gets 52.55" of precipitation a year, and 29% 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.

Month	Avg high	Avg low	Precip
January	44.6°	26.0°	3.83"
February	49.6°	28.5°	3.69"
March	59.2°	36.0°	5.13"
April	70.3°	45.1°	5.09"
May	77.6°	54.9°	5.28"
June	84.4°	62.2°	4.89"
July	87.7°	66.5°	4.81"
August	87.0°	64.8°	3.52"
September	81.4°	57.7°	3.59"
October	70.9°	46.7°	4.26"
November	58.4°	36.7°	3.87"
December	47.9°	29.8°	4.59"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 29% falling in the wettest three months (Mar, Apr, May).

January 3.83"

February 3.69"

March 5.13"

April 5.09"

May 5.28"

June 4.89"

July 4.81"

August 3.52"

September 3.59"

October 4.26"

November 3.87"

December 4.59"

Annual total 52.55"

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 1,333

Heating degree days How much heating the climate demands 4,128

Approximate annual cooling cost At 14.98¢/kWh, Kentucky average $200

Approximate annual electric heating cost Lower where heating is gas rather than electric $216

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 Bullitt County, where electricity is one line of eight.

Common questions

What is the weather like in Bullitt County?

Bullitt County averages a high of 87.7°F in July and a low of 26.0°F in January. Annual precipitation is 52.55 inches, with essentially no snow.

When is the rainy season in Bullitt County?

The wettest stretch is Mar, Apr, May, which accounts for 29% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Bullitt County?

The average daily high in July, the hottest month, is 87.7°F. That drives 1,333 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Bullitt County?

Effectively no. Measurable snowfall is rare in Bullitt County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station BERNHEIM FOREST, KY US (USC00150630), 4.5 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, Kentucky residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.