Weather on December 21
Baltimore, MD
55 Years of Data
Avg High
46°F
Avg Low
32°F
Warmest
2013
62°F avg
Coldest
1980
20°F avg
About This Date
December 21st in Baltimore, MD typically brings chilly winter weather, with average highs around 46°F and lows near 32°F. Over 55 years of records, the warmest December 21st was in 2013 (62°F average), while the coldest was 1980 (20°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 21st dates historically, with the wettest December 21st recording 2.26" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Baltimore, MD? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 48° | 33° | 41° | — | — |
| 2024 | 39° | 28° | 34° | — | — |
| 2023 | 51° | 37° | 44° | — | — |
| 2022 | 43° | 30° | 37° | — | — |
| 2021 | 37° | 24° | 31° | — | — |
| 2020 | 44° | 34° | 39° | — | — |
| 2019 | 38° | 29° | 34° | — | — |
| 2018 | 64° | 51° | 58° | 1.88" | — |
| 2017 | 47° | 36° | 41° | — | — |
| 2016 | 50° | 30° | 40° | — | — |
| 2015 | 59° | 37° | 48° | — | — |
| 2014 | 43° | 33° | 38° | — | — |
| 2013warmest | 72° | 53° | 62° | — | — |
| 2012 | 60° | 40° | 50° | 1.47" | — |
| 2011 | 65° | 47° | 56° | 0.15" | — |
| 2010 | 42° | 29° | 35° | — | — |
| 2009 | 40° | 27° | 33° | — | — |
| 2008 | 44° | 26° | 35° | 0.08" | — |
| 2007 | 44° | 37° | 41° | — | — |
| 2006 | 57° | 42° | 50° | — | — |
| 2005 | 37° | 27° | 32° | — | — |
| 2004 | 42° | 21° | 32° | — | — |
| 2003 | 45° | 26° | 35° | — | — |
| 2002 | 53° | 36° | 44° | — | — |
| 2001 | 42° | 34° | 38° | — | — |
| 2000 | 36° | 22° | 29° | — | — |
| 1999 | 47° | 37° | 42° | 0.03" | — |
| 1998 | 62° | 49° | 55° | — | — |
| 1997 | 48° | 38° | 43° | — | — |
| 1996 | 38° | 22° | 30° | — | — |
| 1995 | 36° | 24° | 30° | — | — |
| 1994 | 56° | 33° | 44° | — | — |
| 1993 | 45° | 34° | 39° | 1.4" | — |
| 1992 | 40° | 30° | 35° | — | — |
| 1991 | 54° | 40° | 47° | — | — |
| 1990 | 52° | 40° | 46° | 0.91" | — |
| 1989 | 29° | 12° | 20° | — | — |
| 1988 | 55° | 42° | 49° | 0.38" | — |
| 1987 | 54° | 40° | 47° | — | — |
| 1986 | 43° | 33° | 38° | — | — |
| 1985 | 30° | 20° | 25° | — | — |
| 1984 | 47° | 34° | 40° | 0.64" | — |
| 1983 | 30° | 18° | 24° | — | — |
| 1982 | 47° | 34° | 40° | — | — |
| 1981 | 36° | 18° | 27° | — | — |
| 1980coldest | 26° | 14° | 20° | — | — |
| 1979 | 39° | 28° | 34° | — | — |
| 1978 | 53° | 39° | 46° | 0.2" | — |
| 1977 | 50° | 37° | 44° | 1.07" | — |
| 1976 | 40° | 24° | 32° | — | — |
| 1975 | 38° | 30° | 34° | — | — |
| 1974 | 42° | 36° | 39° | 0.08" | — |
| 1973 | 53° | 27° | 40° | 2.26" | — |
| 1972 | 44° | 42° | 43° | 2.16" | — |
| 1971 | 59° | 42° | 51° | — | — |
55 years of data from BALTIMORE CUSTOMS HOUSE