Weather on December 21
Edison, NJ
55 Years of Data
About This Date
December 21st in Edison, NJ typically brings chilly winter weather, with average highs around 41°F and lows near 25°F. Over 55 years of records, the warmest December 21st was in 2002 (48°F average), while the coldest was 2004 (14°F) — a 34°F range across recorded history. Precipitation has occurred on 35% of recorded December 21st dates, with snow falling 7% of the time (heaviest snowfall: 3"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 21st in Edison, NJ? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 38° | 27° | 32° | — | — |
| 2024 | 38° | 28° | 33° | 0.69" | 3" |
| 2023 | 47° | 28° | 37° | — | — |
| 2022 | 41° | 21° | 31° | — | — |
| 2021 | 39° | 24° | 32° | — | — |
| 2020 | 38° | 27° | 32° | — | — |
| 2019 | 35° | 19° | 27° | — | — |
| 2018 | 64° | 25° | 44° | 3.18" | — |
| 2017 | 46° | 23° | 35° | — | — |
| 2016 | 35° | 16° | 25° | — | — |
| 2015 | 44° | 29° | 36° | — | — |
| 2014 | 33° | 29° | 31° | — | — |
| 2013 | 54° | 30° | 42° | — | — |
| 2012 | 57° | 27° | 42° | 2.31" | — |
| 2011 | 47° | 38° | 42° | 0.2" | — |
| 2010 | 39° | 27° | 33° | — | — |
| 2009 | 30° | 22° | 26° | — | — |
| 2008 | 29° | 23° | 26° | 0.23" | — |
| 2007 | 46° | 29° | 37° | — | — |
| 2006 | 46° | 28° | 37° | — | — |
| 2005 | 35° | 19° | 27° | — | — |
| 2004coldest | 18° | 10° | 14° | — | — |
| 2003 | 40° | 21° | 30° | — | — |
| 2002warmest | 62° | 34° | 48° | 1.35" | — |
| 2001 | 47° | 27° | 37° | — | — |
| 2000 | 31° | 18° | 24° | — | — |
| 1999 | 52° | 39° | 45° | 2.49" | — |
| 1998 | 51° | 42° | 47° | — | — |
| 1997 | 53° | 28° | 41° | — | — |
| 1996 | 28° | 16° | 22° | — | — |
| 1995 | 22° | 15° | 18° | 0.15" | 2" |
| 1994 | 45° | 23° | 34° | — | — |
| 1993 | 47° | 30° | 38° | 2.16" | — |
| 1992 | 48° | 25° | 36° | 0.3" | — |
| 1991 | 37° | 19° | 28° | — | — |
| 1990 | 47° | 31° | 39° | — | — |
| 1989 | 29° | 14° | 21° | 0.03" | 0.1" |
| 1988 | 57° | 23° | 40° | — | — |
| 1987 | 45° | 37° | 41° | 0.15" | — |
| 1986 | 40° | 31° | 35° | — | — |
| 1985 | 26° | 14° | 20° | 0.15" | 0.6" |
| 1984 | 51° | 31° | 41° | — | — |
| 1983 | 25° | 8° | 16° | — | — |
| 1982 | 38° | 31° | 34° | — | — |
| 1981 | 26° | 8° | 17° | — | — |
| 1980 | 24° | 9° | 16° | — | — |
| 1979 | 31° | 18° | 24° | — | — |
| 1978 | 46° | 26° | 36° | 1.83" | — |
| 1977 | 46° | 34° | 40° | 2.03" | — |
| 1976 | 47° | 27° | 37° | 0.71" | — |
| 1975 | 39° | 21° | 30° | — | — |
| 1974 | 43° | 32° | 37° | — | — |
| 1973 | 58° | 27° | 42° | 5.05" | — |
| 1972 | 44° | 34° | 39° | 0.15" | — |
| 1971 | 43° | 38° | 40° | 0.13" | — |
Edison, NJ Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Edison, NJ Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Edison, NJ Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Edison, NJ
Edison, NJ has no months that meet our "pleasant" threshold — every season has tradeoffs.