30-year climate normals

Perry County Climate and Weather Averages

Hottest month — July

83.5°

average daily high. The coldest month is January, averaging a low of 21.5°F.

Perry County gets 43.72" of precipitation a year, and 29% 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.

Month	Avg high	Avg low	Precip
January	36.9°	21.5°	3.00"
February	39.9°	23.4°	2.40"
March	48.4°	30.4°	3.63"
April	60.7°	40.4°	3.72"
May	70.9°	49.8°	4.18"
June	78.8°	58.3°	4.26"
July	83.5°	63.4°	4.20"
August	81.9°	62.1°	3.55"
September	75.2°	55.3°	4.50"
October	63.6°	43.7°	3.73"
November	51.9°	35.2°	3.07"
December	41.4°	27.1°	3.48"

Rainfall by month

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

January 3.00"

February 2.40"

March 3.63"

April 3.72"

May 4.18"

June 4.26"

July 4.20"

August 3.55"

September 4.50"

October 3.73"

November 3.07"

December 3.48"

Annual total 43.72"

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 773

Heating degree days How much heating the climate demands 5,543

Approximate annual cooling cost At 21.55¢/kWh, Pennsylvania average $167

Approximate annual electric heating cost Lower where heating is gas rather than electric $418

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 Perry County, where electricity is one line of eight.

Common questions

What is the weather like in Perry County?

Perry County averages a high of 83.5°F in July and a low of 21.5°F in January. Annual precipitation is 43.72 inches, with essentially no snow.

When is the rainy season in Perry County?

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

How hot does it get in Perry County?

The average daily high in July, the hottest month, is 83.5°F. That drives 773 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Perry County?

Effectively no. Measurable snowfall is rare in Perry County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station BLOSERVILLE 1 N, PA US (USC00360763), 10.6 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, Pennsylvania residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.