A wintry mix of precipitation fell across central and northwestern New Jersey from the early morning of the 2nd into the early morning of the 3rd. While precipitation changed to rain by the evening of the 2nd across much of the state, freezing rain persisted through the end of the event in Sussex County. Snow and sleet accumulations averaged one to three inches across the northern third of the state and an inch or less across the central third of the state. Ice accretions averaged one tenth to one-quarter of an inch with the highest amounts in Sussex County. Many traffic accidents were caused by this wintry mix.
Precipitation started as light snow from central New Jersey north during the early morning of the 2nd. South of Interstate 195 the snow ended around dawn. When precipitation moved back later that morning, it started as freezing rain and sleet. Because of the recent warm weather and indirect insolation from the sun, roads remained wet and the freezing rain was limited to exposed surfaces. Farther to the north in the state precipitation mixed with and then changed to freezing rain from the late morning into the afternoon.  As warmer air moved inland, the freezing rain changed to rain during the late afternoon in southern New Jersey, during the evening in central New Jersey and took to about Midnight EST on the 3rd for the change to plain rain to occur in most of northwest New Jersey. Precipitation remained freezing rain over most of Sussex County until the event ended around 3 a.m. EST on the 3rd.
In Ocean County, the light snow caused a seven vehicle pile-up near Stafford Township on the Garden State Parkway.  No serious injuries occurred, but the northbound lanes were closed for one hour. In Middlesex County, the freezing rain led to a fourteen vehicle pile-up on New Jersey State Route 18 between East Brunswick and Old Bridge. Four or five separate accidents merged into one.  No serious injuries were reported, but another accident caused an injury in Old Bridge. Farther northwest in New Jersey, several singular vehicle accidents especially on Interstate 80 occurred. The wintry weather forced the cancellation of the Christmas on the Farm Celebration in Wantage Township (Sussex County).

Specific snow and sleet accumulations included 3.1 inches in Blairstown (Warren County), 2.5 inches in Sussex and Wantage (Sussex County),  2.2 inches in Hackettstown (Warren County), 1.9 inches in Pottersville (Somerset County), 1.5 inches in Riegelsville (Hunterdon County) and Washington Crossing (Mercer County), 1.2 inches in Edison (Middlesex County), 1.0 inch in Colts Neck (Monmouth County) and Boonton (Morris County) and 0.5 inches in Mount Holly (Burlington County).
The wintry mix of precipitation was caused by a low pressure system that moved from the Great Lakes on the morning of the 2nd into the Saint Lawrence Valley on the morning of the 3rd. Even though the low pressure system moved north of the region, the cold air near the ground was difficult to dislodge. While it became warm enough aloft for precipitation to fall as rain, it still froze on contact especially over Sussex County.

Winter Weather in MORRIS, NEW JERSEY
From 02-DEC-07 03:00:00 to 03-DEC-07 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in HUNTERDON, NEW JERSEY
From 02-DEC-07 02:00:00 to 02-DEC-07 22:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in SOMERSET, NEW JERSEY
From 02-DEC-07 03:00:00 to 02-DEC-07 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in MIDDLESEX, NEW JERSEY
From 02-DEC-07 03:00:00 to 02-DEC-07 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in WESTERN MONMOUTH, NEW JERSEY
From 02-DEC-07 03:00:00 to 02-DEC-07 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in MERCER, NEW JERSEY
From 02-DEC-07 02:00:00 to 02-DEC-07 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in NORTHWESTERN BURLINGTON, NEW JERSEY
From 02-DEC-07 02:00:00 to 02-DEC-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in WESTERN OCEAN, NEW JERSEY
From 02-DEC-07 02:00:00 to 02-DEC-07 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in CAMDEN, NEW JERSEY
From 02-DEC-07 08:00:00 to 02-DEC-07 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Weather in GLOUCESTER, NEW JERSEY
From 02-DEC-07 08:00:00 to 02-DEC-07 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in SUSSEX, NEW JERSEY
From 02-DEC-07 03:00:00 to 03-DEC-07 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WARREN, NEW JERSEY
From 02-DEC-07 02:00:00 to 03-DEC-07 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS