Average Temperatures for New Jersey in December





Average temperatures for December at cities, communities and other locations in New Jersey are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for: North Jersey and South Jersey.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

North Jersey

Average December temperatures
High °F Low °F Place High °C Low °C
43 26 Easton 6 -3
46 27 Hightstown 8 -3
46 25 Lambertville 8 -4
47 30 Long Branch 8 -1
45 28 New Brunswick 7 -2
45 31 Newark 7 0
46 29 Plainfield 8 -1
43 24 Somerville 6 -4
44 29 Trenton 7 -2
43 27 Wanaque Reservoir Dam 6 -3

South Jersey

Average daily temperatures in December
High °F Low °F Place High °C Low °C
47 35 Atlantic City Marina 8 2
46 33 Beach Haven, Brant Beach 8 0
51 28 Belleplain State Forest 10 -2
46 30 Bridgeton 8 -1
48 33 Cape May 9 1
46 30 Glassboro 8 -1
47 29 Hammonton 8 -2
47 28 Millville 8 -2
47 31 Moorestown 8 -1
47 27 Toms River 8 -3
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

New Jersey Temperatures
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