30-year climate normals

Adams County Climate and Weather Averages

Hottest month — July

86.2°

average daily high. The coldest month is January, averaging a low of 20.8°F.

Adams County gets 44.46" of precipitation a year, and 28% of it falls in Jun, Jul, Aug.

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	39.6°	20.8°	3.45"
February	43.2°	22.3°	2.73"
March	52.2°	30.1°	3.59"
April	64.3°	39.7°	3.42"
May	73.3°	49.1°	4.09"
June	81.8°	57.4°	4.74"
July	86.2°	62.8°	3.61"
August	84.7°	60.8°	4.13"
September	77.8°	54.0°	4.63"
October	66.4°	42.6°	3.71"
November	55.5°	32.4°	3.02"
December	44.7°	26.0°	3.34"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 28% falling in the wettest three months (Jun, Jul, Aug).

January 3.45"

February 2.73"

March 3.59"

April 3.42"

May 4.09"

June 4.74"

July 3.61"

August 4.13"

September 4.63"

October 3.71"

November 3.02"

December 3.34"

Annual total 44.46"

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 871

Heating degree days How much heating the climate demands 5,277

Approximate annual cooling cost At 21.55¢/kWh, Pennsylvania average $188

Approximate annual electric heating cost Lower where heating is gas rather than electric $398

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 Adams County, where electricity is one line of eight.

Common questions

What is the weather like in Adams County?

Adams County averages a high of 86.2°F in July and a low of 20.8°F in January. Annual precipitation is 44.46 inches, with essentially no snow.

When is the rainy season in Adams County?

The wettest stretch is Jun, Jul, Aug, which accounts for 28% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Adams County?

The average daily high in July, the hottest month, is 86.2°F. That drives 871 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Adams County?

Effectively no. Measurable snowfall is rare in Adams County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station EISENHOWER NHS, PA US (USC00362537), 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, Pennsylvania residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.