Weather on December 20
Edison, NJ
55 Years of Data
Avg High
40°F
Avg Low
24°F
Warmest
2017
50°F avg
Coldest
1985
17°F avg
About This Date
December 20th in Edison, NJ typically brings chilly winter weather, with average highs around 40°F and lows near 24°F. Over 55 years of records, the warmest December 20th was in 2017 (50°F average), while the coldest was 1985 (17°F) — a 33°F range across recorded history. Precipitation has occurred on 27% of recorded December 20th dates, with snow falling 13% of the time (heaviest snowfall: 11.1"). The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for December 20th in Edison, NJ? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 26° | 42° | 1.07" | — |
| 2024 | 47° | 34° | 40° | — | — |
| 2023 | 43° | 28° | 35° | — | — |
| 2022 | 40° | 26° | 33° | — | — |
| 2021 | 40° | 19° | 29° | — | — |
| 2020 | 31° | 22° | 26° | — | — |
| 2019 | 28° | 17° | 23° | — | — |
| 2018 | 43° | 24° | 33° | — | — |
| 2017warmest | 58° | 43° | 50° | — | — |
| 2016 | 31° | 13° | 22° | — | — |
| 2015 | 41° | 30° | 36° | — | — |
| 2014 | 41° | 30° | 36° | — | — |
| 2013 | 46° | 22° | 34° | — | — |
| 2012 | 50° | 27° | 38° | — | — |
| 2011 | 49° | 23° | 36° | — | — |
| 2010 | 38° | 19° | 28° | — | — |
| 2009 | 28° | 21° | 25° | 2.26" | 11.1" |
| 2008 | 35° | 25° | 30° | 2.54" | 1" |
| 2007 | 44° | 27° | 35° | — | — |
| 2006 | 47° | 26° | 36° | — | — |
| 2005 | 39° | 19° | 29° | — | — |
| 2004 | 40° | 9° | 24° | 0.1" | 0.1" |
| 2003 | 34° | 26° | 30° | — | — |
| 2002 | 50° | 38° | 44° | 0.05" | — |
| 2001 | 52° | 30° | 41° | — | — |
| 2000 | 41° | 23° | 32° | 0.23" | 1.6" |
| 1999 | 43° | 32° | 37° | — | — |
| 1998 | 51° | 28° | 40° | — | — |
| 1997 | 52° | 31° | 41° | — | — |
| 1996 | 40° | 19° | 29° | 0.43" | — |
| 1995 | 24° | 20° | 22° | 1.96" | 6" |
| 1994 | 43° | 22° | 32° | — | — |
| 1993 | 45° | 28° | 36° | — | — |
| 1992 | 48° | 27° | 37° | 0.05" | — |
| 1991 | 29° | 13° | 21° | — | — |
| 1990 | 51° | 30° | 41° | — | — |
| 1989 | 25° | 13° | 19° | — | — |
| 1988 | 44° | 23° | 34° | — | — |
| 1987 | 44° | 28° | 36° | 0.61" | — |
| 1986 | 47° | 28° | 37° | — | — |
| 1985coldest | 27° | 8° | 17° | — | — |
| 1984 | 44° | 35° | 40° | 0.33" | — |
| 1983 | 32° | 14° | 23° | — | — |
| 1982 | 35° | 29° | 32° | 0.25" | 1.2" |
| 1981 | 27° | 11° | 19° | — | — |
| 1980 | 42° | 9° | 25° | — | — |
| 1979 | 23° | 19° | 21° | 0.69" | 4.6" |
| 1978 | 32° | 22° | 27° | — | — |
| 1977 | 40° | 34° | 37° | — | — |
| 1976 | 48° | 26° | 37° | — | — |
| 1975 | 25° | 15° | 20° | — | — |
| 1974 | 38° | 28° | 33° | — | — |
| 1973 | 30° | 15° | 23° | — | — |
| 1972 | 46° | 33° | 40° | 0.23" | — |
| 1971 | 40° | 22° | 31° | 0.18" | — |
55 years of data from NEW BRUNSWICK 3 SE