Weather on December 21
Stamford, CT
55 Years of Data
Avg High
42°F
Avg Low
24°F
Warmest
2018
51°F avg
Coldest
1989
16°F avg
About This Date
December 21st in Stamford, CT typically brings chilly winter weather, with average highs around 42°F and lows near 24°F. Over 55 years of records, the warmest December 21st was in 2018 (51°F average), while the coldest was 1989 (16°F) — a 35°F range across recorded history. Precipitation has occurred on 33% of recorded December 21st dates, with snow falling 5% of the time (heaviest snowfall: 1.8"). The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Stamford, CT? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 46° | 28° | 37° | — | — |
| 2024 | 31° | 18° | 25° | 0.05" | — |
| 2023 | 39° | 25° | 32° | — | — |
| 2022 | 39° | 23° | 31° | — | — |
| 2021 | 41° | 24° | 33° | — | — |
| 2020 | 43° | 30° | 36° | — | — |
| 2019 | 32° | 18° | 25° | — | — |
| 2018warmest | 61° | 42° | 51° | 6.02" | — |
| 2017 | 37° | 25° | 31° | — | — |
| 2016 | 38° | 17° | 27° | — | — |
| 2015 | 54° | 25° | 39° | — | — |
| 2014 | 35° | 29° | 32° | — | — |
| 2013 | 57° | 30° | 44° | — | — |
| 2012 | 55° | 23° | 39° | 3.12" | — |
| 2011 | 59° | 38° | 48° | 0.74" | — |
| 2010 | 37° | 27° | 32° | — | — |
| 2009 | 34° | 23° | 29° | — | — |
| 2008 | 37° | 23° | 30° | 0.76" | — |
| 2007 | 41° | 28° | 35° | — | — |
| 2006 | 52° | 26° | 39° | — | — |
| 2005 | 36° | 14° | 25° | — | — |
| 2004 | 33° | 5° | 19° | — | — |
| 2003 | 41° | 16° | 28° | — | — |
| 2002 | 48° | 28° | 38° | — | — |
| 2001 | 42° | 34° | 38° | — | — |
| 2000 | 33° | 14° | 24° | — | — |
| 1999 | 57° | 21° | 39° | 1.8" | — |
| 1998 | 49° | 40° | 44° | — | — |
| 1997 | 47° | 21° | 34° | — | — |
| 1996 | 36° | 14° | 25° | — | — |
| 1995 | 32° | 11° | 21° | 0.15" | 0.5" |
| 1994 | 56° | 23° | 39° | — | — |
| 1993 | 54° | 31° | 42° | 3.3" | — |
| 1992 | 43° | 22° | 32° | — | — |
| 1991 | 42° | 26° | 34° | 0.08" | — |
| 1990 | 49° | 37° | 43° | 0.23" | — |
| 1989coldest | 23° | 8° | 16° | — | — |
| 1988 | 38° | 33° | 35° | 0.33" | — |
| 1987 | 44° | 35° | 40° | — | — |
| 1986 | 38° | 22° | 30° | — | — |
| 1985 | 32° | 13° | 22° | 0.18" | 0.8" |
| 1984 | 38° | 25° | 31° | — | — |
| 1983 | 31° | 6° | 18° | — | — |
| 1982 | 40° | 30° | 35° | — | — |
| 1981 | 35° | 3° | 19° | — | — |
| 1980 | 29° | 6° | 17° | — | — |
| 1979 | 37° | 14° | 26° | — | — |
| 1978 | 47° | 30° | 38° | 1.37" | — |
| 1977 | 51° | 34° | 42° | 3.33" | — |
| 1976 | 45° | 18° | 31° | 0.76" | — |
| 1975 | 27° | 19° | 23° | 0.28" | 1.8" |
| 1974 | 41° | 30° | 36° | — | — |
| 1973 | 57° | 33° | 45° | 6.05" | — |
| 1972 | 37° | 29° | 33° | 0.08" | — |
| 1971 | 50° | 30° | 40° | — | — |
55 years of data from STAMFORD 5 N