Port Norris weather by month
What a typical year looks like in Port Norris, New Jersey: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Millville Municipal Airport, 12 km from Port Norris; records cover 1943–2026.
The year at a glance
- Precipitation a year
- 43.4 in1102 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 25
- First fall freeze
- Oct 20
- Heating degree days
- 4,935
- Cooling degree days
- 1,049
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 7°−14° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Port Norris in January
Highs average 42°6° and lows 24°−5°, with 3.1 in80 mm of precipitation in a typical January.
- Record high
- 74°23° (1950)
- Record low
- −10°−23° (1961)
- Heating degree days
- 992
- Cooling degree days
- 0
Port Norris in February
Highs average 45°7° and lows 25°−4°, with 2.6 in67 mm of precipitation in a typical February.
- Record high
- 76°24° (2018)
- Record low
- −6°−21° (1979)
- Heating degree days
- 851
- Cooling degree days
- 0
Port Norris in March
Highs average 52°11° and lows 31°0°, with 4.1 in104 mm of precipitation in a typical March.
- Record high
- 86°30° (1945)
- Record low
- −7°−22° (2009)
- Heating degree days
- 718
- Cooling degree days
- 0
Port Norris in April
Highs average 64°18° and lows 41°5°, with 3.5 in90 mm of precipitation in a typical April.
- Record high
- 93°34° (2002)
- Record low
- 17°−8° (1965)
- Heating degree days
- 396
- Cooling degree days
- 10
Port Norris in May
Highs average 73°23° and lows 50°10°, with 3.1 in79 mm of precipitation in a typical May.
- Record high
- 96°36° (1991)
- Record low
- 29°−2° (2000)
- Heating degree days
- 159
- Cooling degree days
- 55
Port Norris in June
Highs average 82°28° and lows 60°16°, with 3.9 in99 mm of precipitation in a typical June.
- Record high
- 101°38° (2025)
- Record low
- 38°3° (1945)
- Heating degree days
- 22
- Cooling degree days
- 199
Port Norris in July
Highs average 86°30° and lows 66°19°, with 4.3 in108 mm of precipitation in a typical July.
- Record high
- 103°39° (2010)
- Record low
- 44°7° (1988)
- Heating degree days
- 0
- Cooling degree days
- 346
Port Norris in August
Highs average 84°29° and lows 64°18°, with 4.6 in117 mm of precipitation in a typical August.
- Record high
- 101°38° (1948)
- Record low
- 44°7° (1982)
- Heating degree days
- 2
- Cooling degree days
- 291
Port Norris in September
Highs average 78°26° and lows 57°14°, with 3.2 in80 mm of precipitation in a typical September.
- Record high
- 97°36° (1953)
- Record low
- 35°2° (1962)
- Heating degree days
- 51
- Cooling degree days
- 129
Port Norris in OctoberThis month
Highs average 67°19° and lows 45°7°, with 3.8 in97 mm of precipitation in a typical October.
- Record high
- 97°36° (2019)
- Record low
- 21°−6° (1969)
- Heating degree days
- 299
- Cooling degree days
- 18
Port Norris in November
Highs average 56°13° and lows 35°2°, with 3.2 in81 mm of precipitation in a typical November.
- Record high
- 84°29° (1950)
- Record low
- 12°−11° (1989)
- Heating degree days
- 586
- Cooling degree days
- 1
Port Norris in December
Highs average 47°8° and lows 28°−2°, with 4 in100 mm of precipitation in a typical December.
- Record high
- 77°25° (1998)
- Record low
- 2°−17° (1980)
- Heating degree days
- 859
- Cooling degree days
- 0