Weather on December 21
Rochester, NY
55 Years of Data
About This Date
December 21st in Rochester, NY typically brings cold winter weather, with average highs around 37°F and lows near 23°F. Over 55 years of records, the warmest December 21st was in 1990 (47°F average), while the coldest was 1989 (8°F) — a 39°F range across recorded history. Precipitation has occurred on 51% of recorded December 21st dates, with snow falling 44% of the time (heaviest snowfall: 6.4"). The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Rochester, NY? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 42° | 25° | 33° | — | — |
| 2024 | 24° | 13° | 19° | 0.33" | 3.9" |
| 2023 | 36° | 24° | 30° | — | — |
| 2022 | 38° | 21° | 30° | — | — |
| 2021 | 40° | 28° | 34° | — | — |
| 2020 | 40° | 33° | 36° | 0.03" | — |
| 2019 | 34° | 12° | 23° | — | — |
| 2018 | 57° | 35° | 46° | 1.55" | 0.1" |
| 2017 | 30° | 25° | 28° | 0.13" | 0.3" |
| 2016 | 36° | 31° | 34° | 0.05" | 0.3" |
| 2015 | 53° | 41° | 47° | — | — |
| 2014 | 37° | 26° | 32° | — | — |
| 2013 | 54° | 32° | 43° | 1.8" | — |
| 2012 | 42° | 31° | 36° | 1.17" | 0.6" |
| 2011 | 54° | 35° | 44° | 0.76" | — |
| 2010 | 29° | 21° | 25° | — | — |
| 2009 | 30° | 23° | 27° | — | 0.4" |
| 2008 | 33° | 11° | 22° | 0.48" | 6.4" |
| 2007 | 36° | 21° | 28° | — | — |
| 2006 | 48° | 33° | 41° | — | — |
| 2005 | 28° | 14° | 21° | 0.03" | 1.4" |
| 2004 | 34° | 7° | 20° | — | — |
| 2003 | 40° | 23° | 31° | — | — |
| 2002 | 35° | 30° | 33° | 1.14" | 4.5" |
| 2001 | 35° | 29° | 32° | — | — |
| 2000 | 31° | 14° | 22° | — | — |
| 1999 | 35° | 23° | 29° | — | — |
| 1998 | 53° | 32° | 43° | 0.48" | — |
| 1997 | 32° | 19° | 26° | 0.05" | 0.6" |
| 1996 | 31° | 12° | 21° | — | 0.1" |
| 1995 | 24° | 13° | 18° | 0.1" | 0.8" |
| 1994 | 54° | 30° | 42° | — | — |
| 1993 | 35° | 32° | 34° | 1.4" | 4.5" |
| 1992 | 33° | 21° | 27° | — | — |
| 1991 | 39° | 32° | 36° | 0.18" | 0.5" |
| 1990warmest | 53° | 41° | 47° | 0.33" | — |
| 1989coldest | 11° | 5° | 8° | 0.05" | 0.7" |
| 1988 | 55° | 30° | 43° | — | — |
| 1987 | 40° | 33° | 36° | — | — |
| 1986 | 34° | 22° | 28° | — | — |
| 1985 | 24° | 13° | 18° | 0.08" | 0.5" |
| 1984 | 40° | 20° | 30° | 1.09" | — |
| 1983 | 29° | 2° | 15° | 1.22" | 3.5" |
| 1982 | 33° | 29° | 31° | 0.18" | 0.9" |
| 1981 | 34° | 15° | 24° | — | — |
| 1980 | 24° | 11° | 17° | — | — |
| 1979 | 37° | 21° | 29° | — | — |
| 1978 | 45° | 29° | 37° | 0.28" | 2.1" |
| 1977 | 38° | 30° | 34° | 0.76" | 2.7" |
| 1976 | 22° | 12° | 17° | 0.25" | 1.7" |
| 1975 | 21° | 17° | 19° | 0.28" | 2.2" |
| 1974 | 35° | 21° | 28° | — | — |
| 1973 | 36° | 17° | 26° | 0.33" | 1.8" |
| 1972 | 40° | 27° | 33° | 0.2" | 0.2" |
| 1971 | 37° | 28° | 33° | — | — |