Weather on December 9
Edison, NJ
55 Years of Data
Avg High
44°F
Avg Low
27°F
Warmest
1978
53°F avg
Coldest
1976
19°F avg
About This Date
December 9th in Edison, NJ typically brings chilly winter weather, with average highs around 44°F and lows near 27°F. Over 55 years of records, the warmest December 9th was in 1978 (53°F average), while the coldest was 1976 (19°F) — a 34°F range across recorded history. Precipitation has occurred on 33% of recorded December 9th dates, with snow falling 9% of the time (heaviest snowfall: 4.3"). The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for December 9th in Edison, NJ? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 30° | 11° | 20° | — | — |
| 2024 | 58° | 29° | 43° | — | — |
| 2023 | 53° | 29° | 41° | — | — |
| 2022 | 54° | 31° | 42° | — | — |
| 2021 | 42° | 28° | 35° | — | — |
| 2020 | 40° | 23° | 31° | — | — |
| 2019 | 43° | 22° | 32° | 1.04" | — |
| 2018 | 38° | 20° | 29° | — | — |
| 2017 | 37° | 32° | 35° | — | — |
| 2016 | 44° | 30° | 37° | — | — |
| 2015 | 51° | 29° | 40° | — | — |
| 2014 | 37° | 25° | 31° | 2.87" | — |
| 2013 | 34° | 27° | 30° | 1.27" | 1.5" |
| 2012 | 50° | 41° | 46° | 0.13" | — |
| 2011 | 47° | 27° | 37° | — | — |
| 2010 | 36° | 21° | 28° | — | — |
| 2009 | 46° | 33° | 40° | 2.59" | — |
| 2008 | 31° | 18° | 24° | — | — |
| 2007 | 47° | 28° | 37° | — | — |
| 2006 | 31° | 19° | 25° | — | — |
| 2005 | 33° | 23° | 28° | 1.47" | 4.3" |
| 2004 | 60° | 31° | 45° | — | — |
| 2003 | 38° | 17° | 27° | — | — |
| 2002 | 46° | 18° | 32° | — | — |
| 2001 | 45° | 36° | 40° | 2.26" | — |
| 2000 | 34° | 19° | 26° | 0.03" | — |
| 1999 | 53° | 28° | 41° | — | — |
| 1998 | 50° | 40° | 45° | 0.43" | — |
| 1997 | 48° | 21° | 35° | — | — |
| 1996 | 50° | 27° | 38° | — | — |
| 1995 | 37° | 24° | 31° | 0.15" | 0.6" |
| 1994 | 40° | 24° | 32° | — | — |
| 1993 | 50° | 27° | 38° | — | — |
| 1992 | 40° | 19° | 29° | — | — |
| 1991 | 58° | 33° | 45° | — | — |
| 1990 | 48° | 33° | 41° | — | — |
| 1989 | 24° | 15° | 20° | 0.18" | 0.6" |
| 1988 | 45° | 24° | 34° | — | — |
| 1987 | 48° | 26° | 37° | — | — |
| 1986 | 45° | 33° | 39° | 1.3" | — |
| 1985 | 47° | 28° | 37° | — | — |
| 1984 | 42° | 24° | 33° | — | — |
| 1983 | 40° | 23° | 31° | — | — |
| 1982 | 50° | 31° | 40° | — | — |
| 1981 | 43° | 29° | 36° | 0.53" | — |
| 1980 | 65° | 41° | 53° | — | — |
| 1979 | 49° | 26° | 37° | — | — |
| 1978warmest | 60° | 46° | 53° | 3.71" | — |
| 1977 | 35° | 19° | 27° | 0.15" | 0.2" |
| 1976coldest | 25° | 13° | 19° | — | — |
| 1975 | 36° | 28° | 32° | — | — |
| 1974 | 58° | 36° | 47° | 2.16" | — |
| 1973 | 42° | 32° | 37° | 0.89" | — |
| 1972 | 52° | 30° | 41° | 2.18" | — |
| 1971 | 43° | 39° | 41° | — | — |
55 years of data from NEW BRUNSWICK 3 SE