The coldest week in New Jersey, station by station
The week with the lowest normal low at each reference station, from NOAA’s 1991 to 2020 normals, beside the coldest night of the last 10 winters, the median first freeze and the record low.
The coldest week and the coldest nights at New Jersey reference stations
Station
Coldest week
Normal low
Coldest night, last 10 winters
First freeze
Record low
NewarkNewark International Airport, USW00014734
Jan 21 to 27
25°F
2°FJan 31, 2019
Nov 16
−14°FFeb 9, 1934records since 1843
TrentonTrenton Mercer County Airport, USW00014792
Jan 20 to 26
24°F
−2°FJan 7, 2018
Oct 31
−2°FJan 7, 2018records since 1945
Atlantic CityAtlantic City International Airport, USW00093730
Jan 23 to 29
25°F
−3°FJan 7, 2018
Nov 1
−11°FFeb 12, 1979records since 1958
SussexSussex 3 WNW, USC00288644
Jan 23 to 29
16°F
−11°FFeb 2, 2019, 7 winters on record
Oct 18
−29°FJan 21, 1994records since 1891
Normals from NOAA NCEI; nightly lows from GHCN-Daily, the winters of 2016 to 2017 through 2025 to 2026.
The panel at the top of this page sets the next 7 nights at Newark against the normal low for each date and adds the Climate Prediction Center outlook for the two weeks after. Enter a ZIP for your own town; it uses the nearest of the 4 New Jersey reference stations.
At Newark it is usually Jan 21 to 27, with a normal low of 25°F. At the other reference stations: Trenton Jan 20 to 26 (24°F), Atlantic City Jan 23 to 29 (25°F) and Sussex Jan 23 to 29 (16°F). These are NOAA's 1991 to 2020 daily normals.
The normal low at Newark reaches 32°F around Dec 13. The first actual freeze came around Nov 16 in the median of the last 10 winters, weeks ahead of the normal, because one clear calm night can run far below the average.
The coldest night of the last 10 winters at Newark was 2°F on Jan 31, 2019, and the coldest night of a typical winter there was 7°F. Elsewhere: Trenton −2°F on Jan 7, 2018, Atlantic City −3°F on Jan 7, 2018 and Sussex −11°F on Feb 2, 2019 (7 winters on record). The record at the Newark station is −14°F, on Feb 9, 1934, in daily records since 1843.
At Newark a typical recent winter brings 73 nights at 32°F or colder and 15 at 20°F or colder, the median of the last 10 seasons.
Each night's forecast low is compared with the NOAA normal low for that date at the nearest reference station. A night 20 or more degrees below normal is an arctic blast, and so is a night below zero where the normal low is 10°F or warmer. A night 10 to 19 below is a cold snap. A night 5 or more below, or a week that runs 3 or more below on average, is colder than normal, and a week 5 or more above is mild.
The normal lows and coldest weeks are NOAA's 1991 to 2020 daily climate normals for Newark International Airport (USW00014734), Trenton Mercer County Airport (USW00014792), Atlantic City International Airport (USW00093730) and Sussex 3 WNW (USC00288644). The recent winters, first dates and records come from the same stations' daily lows in NOAA's GHCN-Daily archive, the winters of 2016 to 2017 through 2025 to 2026. The 7 night forecast is the National Weather Service's and the outlook is the Climate Prediction Center's.
