East Petersburg weather by month
What a typical year looks like in East Petersburg, Pennsylvania: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lancaster 2 NE Filt Plant, 9 km from East Petersburg; records cover 1949–2026.
The year at a glance
- Precipitation a year
- 44.2 in1121 mm
- Snow a year
- 21 in54 cm
- Last spring freeze
- Apr 16
- First fall freeze
- Oct 24
- Heating degree days
- 5,128
- Cooling degree days
- 1,030
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 8°−13° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
East Petersburg in January
Highs average 40°4° and lows 22°−5°, with 3 in76 mm of precipitation and 6 in15 cm of snow in a typical January.
- Record high
- 70°21° (2002)
- Record low
- −16°−27° (1984)
- Heating degree days
- 1052
- Cooling degree days
- 0
East Petersburg in February
Highs average 43°6° and lows 24°−5°, with 2.5 in64 mm of precipitation and 7 in19 cm of snow in a typical February.
- Record high
- 82°28° (2018)
- Record low
- −9°−23° (1979)
- Heating degree days
- 890
- Cooling degree days
- 0
East Petersburg in March
Highs average 52°11° and lows 31°−1°, with 3.5 in89 mm of precipitation and 3 in9 cm of snow in a typical March.
- Record high
- 88°31° (1998)
- Record low
- −2°−19° (1984)
- Heating degree days
- 730
- Cooling degree days
- 0
East Petersburg in April
Highs average 65°18° and lows 41°5°, with 3.5 in90 mm of precipitation and 0.2 in0.5 cm of snow in a typical April.
- Record high
- 93°34° (2002)
- Record low
- 16°−9° (1982)
- Heating degree days
- 383
- Cooling degree days
- 10
East Petersburg in May
Highs average 75°24° and lows 50°10°, with 3.7 in93 mm of precipitation in a typical May.
- Record high
- 99°37° (1995)
- Record low
- 21°−6° (2020)
- Heating degree days
- 144
- Cooling degree days
- 64
East Petersburg in June
Highs average 83°28° and lows 60°15°, with 4.1 in104 mm of precipitation in a typical June.
- Record high
- 99°37° (2024)
- Record low
- 33°1° (2019)
- Heating degree days
- 18
- Cooling degree days
- 204
East Petersburg in July
Highs average 87°31° and lows 65°18°, with 4.5 in115 mm of precipitation in a typical July.
- Record high
- 104°40° (2026)
- Record low
- 46°8° (1986)
- Heating degree days
- 0
- Cooling degree days
- 336
East Petersburg in August
Highs average 85°30° and lows 63°17°, with 3.6 in91 mm of precipitation in a typical August.
- Record high
- 101°38° (1983)
- Record low
- 37°3° (1986)
- Heating degree days
- 2
- Cooling degree days
- 283
East Petersburg in September
Highs average 78°26° and lows 56°13°, with 4.8 in122 mm of precipitation in a typical September.
- Record high
- 99°37° (1980)
- Record low
- 34°1° (1983)
- Heating degree days
- 61
- Cooling degree days
- 118
East Petersburg in OctoberThis month
Highs average 66°19° and lows 44°7°, with 4.2 in106 mm of precipitation and 0.3 in0.8 cm of snow in a typical October.
- Record high
- 93°34° (2019)
- Record low
- 23°−5° (1988)
- Heating degree days
- 323
- Cooling degree days
- 15
East Petersburg in November
Highs average 55°13° and lows 34°1°, with 3.3 in83 mm of precipitation and 0.6 in1.5 cm of snow in a typical November.
- Record high
- 86°30° (2003)
- Record low
- 11°−12° (2018)
- Heating degree days
- 618
- Cooling degree days
- 0
East Petersburg in December
Highs average 44°7° and lows 27°−3°, with 3.5 in88 mm of precipitation and 3 in9 cm of snow in a typical December.
- Record high
- 76°24° (1998)
- Record low
- −3°−19° (1980)
- Heating degree days
- 907
- Cooling degree days
- 0