Weather on May 21
Baltimore, MD
55 Years of Data
Avg High
77°F
Avg Low
59°F
Warmest
1996
84°F avg
Coldest
2002
52°F avg
About This Date
May 21st in Baltimore, MD typically brings pleasant spring weather, with average highs around 77°F and lows near 59°F. Over 55 years of records, the warmest May 21st was in 1996 (84°F average), while the coldest was 2002 (52°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 36% of May 21st dates historically, with the wettest May 21st recording 2.03" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for May 21st in Baltimore, MD? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 57° | 62° | 1.63" | — |
| 2024 | 87° | 64° | 76° | — | — |
| 2023 | 82° | 58° | 70° | 0.03" | — |
| 2022 | 86° | 61° | 73° | — | — |
| 2021 | 84° | 62° | 73° | — | — |
| 2020 | 72° | 48° | 60° | — | — |
| 2019 | 73° | 62° | 68° | — | — |
| 2018 | 80° | 68° | 74° | — | — |
| 2017 | 68° | 59° | 64° | — | — |
| 2016 | 65° | 54° | 59° | 1.4" | — |
| 2015 | 61° | 49° | 55° | 0.25" | — |
| 2014 | 73° | 62° | 68° | 0.51" | — |
| 2013 | 88° | 71° | 79° | — | — |
| 2012 | 77° | 67° | 72° | 0.84" | — |
| 2011 | 84° | 63° | 73° | — | — |
| 2010 | 87° | 63° | 75° | — | — |
| 2009 | 80° | 54° | 67° | — | — |
| 2008 | 70° | 50° | 60° | — | — |
| 2007 | 77° | 61° | 69° | — | — |
| 2006 | 75° | 51° | 63° | — | — |
| 2005 | 74° | 49° | 61° | — | — |
| 2004 | 84° | 68° | 76° | 0.1" | — |
| 2003 | 63° | 56° | 59° | 1.73" | — |
| 2002coldest | 60° | 44° | 52° | — | — |
| 2001 | 56° | 50° | 53° | 1.52" | — |
| 2000 | 65° | 55° | 60° | 0.03" | — |
| 1999 | 83° | 61° | 72° | — | — |
| 1998 | 89° | 67° | 78° | — | — |
| 1997 | 69° | 56° | 62° | — | — |
| 1996warmest | 96° | 72° | 84° | — | — |
| 1995 | 86° | 61° | 73° | 0.08" | — |
| 1994 | 76° | 45° | 60° | — | — |
| 1993 | 70° | 49° | 59° | — | — |
| 1992 | 86° | 51° | 69° | — | — |
| 1991 | 80° | 61° | 70° | — | — |
| 1990 | 62° | 52° | 57° | 0.3" | — |
| 1989 | 89° | 68° | 79° | — | — |
| 1988 | 78° | 59° | 69° | — | — |
| 1987 | 79° | 58° | 68° | 0.15" | — |
| 1986 | 77° | 64° | 71° | 0.18" | — |
| 1985 | 86° | 66° | 76° | 1.63" | — |
| 1984 | 83° | 68° | 75° | 0.18" | — |
| 1983 | 73° | 64° | 69° | 2.03" | — |
| 1982 | 79° | 66° | 72° | 0.23" | — |
| 1981 | 80° | 53° | 67° | — | — |
| 1980 | 63° | 57° | 60° | 0.86" | — |
| 1979 | 72° | 62° | 67° | — | — |
| 1978 | 88° | 66° | 77° | — | — |
| 1977 | 85° | 64° | 74° | — | — |
| 1976 | 86° | 65° | 75° | — | — |
| 1975 | 93° | 69° | 81° | — | — |
| 1974 | 79° | 58° | 68° | — | — |
| 1973 | 69° | 57° | 63° | — | — |
| 1972 | 70° | 62° | 66° | — | — |
| 1971 | 66° | 57° | 62° | 0.69" | — |
55 years of data from BALTIMORE CUSTOMS HOUSE