Weather on December 20
Cambridge, MA
55 Years of Data
About This Date
December 20th in Cambridge, MA typically brings cold winter weather, with average highs around 38°F and lows near 21°F. Over 55 years of records, the warmest December 20th was in 2017 (43°F average), while the coldest was 1979 (12°F) — a 31°F range across recorded history. Precipitation has occurred on 27% of recorded December 20th dates, with snow falling 15% of the time (heaviest snowfall: 11"). The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for December 20th in Cambridge, MA? Bundle up with warm layers and protect extremities from the cold.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 53° | 30° | 42° | — | — |
| 2024 | 44° | 31° | 37° | — | — |
| 2023 | 50° | 29° | 39° | — | — |
| 2022 | 42° | 29° | 35° | — | — |
| 2021 | 35° | 19° | 27° | — | — |
| 2020 | 35° | 11° | 23° | — | — |
| 2019 | 22° | 12° | 17° | — | — |
| 2018 | 41° | 24° | 33° | — | — |
| 2017warmest | 50° | 35° | 43° | — | — |
| 2016 | 26° | 15° | 21° | — | — |
| 2015 | 42° | 28° | 35° | — | — |
| 2014 | 36° | 26° | 31° | — | — |
| 2013 | 42° | 21° | 32° | — | — |
| 2012 | 51° | 29° | 40° | — | — |
| 2011 | 43° | 16° | 29° | — | — |
| 2010 | 36° | 26° | 31° | — | — |
| 2009 | 29° | 18° | 23° | — | — |
| 2008 | 31° | 12° | 21° | 2.84" | 11" |
| 2007 | 35° | 29° | 32° | 1.24" | 7.3" |
| 2006 | 42° | 23° | 33° | — | — |
| 2005 | 35° | 22° | 28° | — | — |
| 2004 | 39° | 6° | 23° | 0.28" | 0.6" |
| 2003 | 39° | 26° | 33° | — | — |
| 2002 | 49° | 23° | 36° | 0.08" | — |
| 2001 | 50° | 29° | 39° | — | — |
| 2000 | 40° | 24° | 32° | 1.19" | — |
| 1999 | 40° | 22° | 31° | — | — |
| 1998 | 48° | 30° | 39° | — | — |
| 1997 | 45° | 28° | 36° | — | — |
| 1996 | 44° | 26° | 35° | 2.18" | — |
| 1995 | 24° | 17° | 21° | — | 9" |
| 1994 | 40° | 20° | 30° | — | — |
| 1993 | 36° | 28° | 32° | 0.89" | 1.2" |
| 1992 | 46° | 26° | 36° | 0.1" | — |
| 1991 | 26° | 10° | 18° | — | — |
| 1990 | 49° | 27° | 38° | — | — |
| 1989 | 30° | 15° | 23° | — | — |
| 1988 | 38° | 16° | 27° | — | — |
| 1987 | 38° | 23° | 30° | — | — |
| 1986 | 43° | 40° | 41° | 0.25" | — |
| 1985 | 35° | 25° | 30° | — | — |
| 1984 | 45° | 29° | 37° | 1.04" | — |
| 1983 | 47° | 8° | 27° | — | — |
| 1982 | 27° | 14° | 20° | — | — |
| 1981 | 31° | 9° | 20° | — | — |
| 1980 | 38° | 0° | 19° | 0.05" | — |
| 1979coldest | 17° | 6° | 12° | — | — |
| 1978 | 28° | 13° | 20° | — | — |
| 1977 | 38° | 28° | 33° | 1.8" | 3" |
| 1976 | 31° | 19° | 25° | — | — |
| 1975 | 23° | 4° | 13° | 1.65" | 8" |
| 1974 | 36° | 25° | 30° | — | — |
| 1973 | 28° | 7° | 17° | — | — |
| 1972 | 37° | 20° | 28° | 0.03" | — |
| 1971 | 28° | 10° | 19° | 0.1" | 0.5" |
Cambridge, MA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Cambridge, MA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Cambridge, MA 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 Cambridge, MA
Cambridge, MA has no months that meet our "pleasant" threshold — every season has tradeoffs.