December in New Jersey typically brings a transition into winter’s chill. Average temperatures range from the low 20s to the low 40s Fahrenheit (-7 to 4 degrees Celsius), with considerable variation possible. Precipitation is common and can occur as rain, snow, sleet, or freezing rain, depending on specific weather systems and temperature fluctuations. This period marks the onset of more frequent snowfall events compared to earlier months.
Understanding typical December conditions is crucial for residents and visitors alike. Preparedness for potentially inclement weather, including winter storms, is vital. Awareness of average temperatures and precipitation patterns allows for appropriate clothing choices, travel planning, and adjustments to outdoor activities. Historically, December has seen significant snowfalls and periods of extreme cold, highlighting the importance of anticipating and mitigating potential weather-related disruptions.