Port Allegany weather by month
What a typical year looks like in Port Allegany, Pennsylvania: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Port Allegany, 1 km from Port Allegany; records cover 1969–2026.
The year at a glance
- Precipitation a year
- 42.6 in1082 mm
- Snow a year
- 55 in140 cm
- Last spring freeze
- May 20
- First fall freeze
- Oct 8
- Heating degree days
- 7,278
- Cooling degree days
- 303
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Port Allegany in January
Highs average 31°−1° and lows 14°−10°, with 3.1 in77 mm of precipitation and 14 in36 cm of snow in a typical January.
- Record high
- 65°18° (2008)
- Record low
- −19°−28° (2009)
- Heating degree days
- 1324
- Cooling degree days
- 0
Port Allegany in February
Highs average 34°1° and lows 15°−10°, with 2.3 in57 mm of precipitation and 12 in31 cm of snow in a typical February.
- Record high
- 72°22° (2017)
- Record low
- −26°−32° (2015)
- Heating degree days
- 1144
- Cooling degree days
- 0
Port Allegany in March
Highs average 43°6° and lows 22°−5°, with 3 in76 mm of precipitation and 9 in24 cm of snow in a typical March.
- Record high
- 78°26° (2000)
- Record low
- −15°−26° (2015)
- Heating degree days
- 1001
- Cooling degree days
- 0
Port Allegany in April
Highs average 57°14° and lows 31°0°, with 3.5 in90 mm of precipitation and 1.7 in4.3 cm of snow in a typical April.
- Record high
- 87°31° (2023)
- Record low
- 12°−11° (2016)
- Heating degree days
- 632
- Cooling degree days
- 0
Port Allegany in May
Highs average 68°20° and lows 43°6°, with 3.8 in97 mm of precipitation in a typical May.
- Record high
- 90°32° (2006)
- Record low
- 21°−6° (2017)
- Heating degree days
- 318
- Cooling degree days
- 16
Port Allegany in June
Highs average 76°24° and lows 52°11°, with 4.2 in108 mm of precipitation in a typical June.
- Record high
- 91°33° (2022)
- Record low
- 31°−1° (2003)
- Heating degree days
- 99
- Cooling degree days
- 59
Port Allegany in July
Highs average 80°26° and lows 56°13°, with 4.5 in115 mm of precipitation in a typical July.
- Record high
- 99°37° (2011)
- Record low
- 37°3° (2007)
- Heating degree days
- 34
- Cooling degree days
- 112
Port Allegany in August
Highs average 78°26° and lows 55°13°, with 4.1 in104 mm of precipitation in a typical August.
- Record high
- 94°34° (2001)
- Record low
- 37°3° (2025)
- Heating degree days
- 47
- Cooling degree days
- 84
Port Allegany in September
Highs average 71°22° and lows 48°9°, with 3.7 in94 mm of precipitation in a typical September.
- Record high
- 91°33° (2002)
- Record low
- 26°−3° (2020)
- Heating degree days
- 189
- Cooling degree days
- 30
Port Allegany in OctoberThis month
Highs average 59°15° and lows 37°3°, with 3.9 in99 mm of precipitation and 0.6 in1.5 cm of snow in a typical October.
- Record high
- 85°29° (2019)
- Record low
- 16°−9° (1975)
- Heating degree days
- 527
- Cooling degree days
- 2
Port Allegany in November
Highs average 47°8° and lows 28°−2°, with 3.3 in83 mm of precipitation and 4 in10 cm of snow in a typical November.
- Record high
- 76°24° (2003)
- Record low
- −1°−18° (2000)
- Heating degree days
- 822
- Cooling degree days
- 0
Port Allegany in December
Highs average 36°2° and lows 21°−6°, with 3.2 in82 mm of precipitation and 13 in34 cm of snow in a typical December.
- Record high
- 68°20° (2001)
- Record low
- −9°−23° (2004)
- Heating degree days
- 1141
- Cooling degree days
- 0