Weather on May 12
Boston, MA
55 Years of Data
Avg High
66°F
Avg Low
49°F
Warmest
2001
75°F avg
Coldest
1992
46°F avg
About This Date
May 12th in Boston, MA typically brings mild spring weather, with average highs around 66°F and lows near 49°F. Over 55 years of records, the warmest May 12th was in 2001 (75°F average), while the coldest was 1992 (46°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 12th dates historically, with the wettest May 12th recording 1.68" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for May 12th in Boston, MA? 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 | 75° | 46° | 61° | — | — |
| 2024 | 57° | 44° | 51° | — | — |
| 2023 | 85° | 57° | 71° | — | — |
| 2022 | 60° | 51° | 56° | — | — |
| 2021 | 69° | 48° | 59° | — | — |
| 2020 | 56° | 41° | 48° | — | — |
| 2019 | 55° | 43° | 49° | 0.99" | — |
| 2018 | 53° | 49° | 51° | 0.53" | — |
| 2017 | 53° | 47° | 50° | 0.03" | — |
| 2016 | 66° | 54° | 60° | — | — |
| 2015 | 87° | 48° | 68° | 0.05" | — |
| 2014 | 85° | 52° | 68° | — | — |
| 2013 | 73° | 51° | 62° | 0.1" | — |
| 2012 | 80° | 50° | 65° | — | — |
| 2011 | 60° | 51° | 56° | — | — |
| 2010 | 53° | 47° | 50° | — | — |
| 2009 | 59° | 47° | 53° | — | — |
| 2008 | 51° | 47° | 49° | — | — |
| 2007 | 69° | 50° | 60° | — | — |
| 2006 | 51° | 48° | 50° | 0.94" | — |
| 2005 | 62° | 45° | 53° | — | — |
| 2004 | 73° | 57° | 65° | — | — |
| 2003 | 52° | 45° | 48° | 0.25" | — |
| 2002 | 57° | 47° | 52° | 0.94" | — |
| 2001warmest | 88° | 62° | 75° | — | — |
| 2000 | 67° | 50° | 58° | — | — |
| 1999 | 70° | 49° | 59° | — | — |
| 1998 | 52° | 44° | 48° | — | — |
| 1997 | 75° | 52° | 63° | — | — |
| 1996 | 52° | 42° | 47° | 0.48" | — |
| 1995 | 57° | 45° | 51° | — | — |
| 1994 | 67° | 52° | 59° | 0.28" | — |
| 1993 | 70° | 50° | 60° | — | — |
| 1992coldest | 52° | 41° | 46° | — | — |
| 1991 | 88° | 60° | 74° | — | — |
| 1990 | 67° | 45° | 56° | — | — |
| 1989 | 67° | 49° | 58° | 0.18" | — |
| 1988 | 64° | 51° | 58° | — | — |
| 1987 | 76° | 52° | 64° | — | — |
| 1986 | 52° | 44° | 48° | 0.2" | — |
| 1985 | 65° | 45° | 55° | 0.1" | — |
| 1984 | 60° | 54° | 57° | 0.58" | — |
| 1983 | 62° | 41° | 52° | — | — |
| 1982 | 56° | 44° | 50° | — | — |
| 1981 | 67° | 50° | 58° | 0.3" | — |
| 1980 | 78° | 54° | 66° | — | — |
| 1979 | 64° | 52° | 58° | 0.03" | — |
| 1978 | 77° | 49° | 63° | — | — |
| 1977 | 77° | 52° | 64° | — | — |
| 1976 | 68° | 50° | 59° | 0.64" | — |
| 1975 | 80° | 55° | 68° | — | — |
| 1974 | 64° | 45° | 54° | 1.68" | — |
| 1973 | 72° | 51° | 61° | — | — |
| 1972 | 65° | 46° | 55° | — | — |
| 1971 | 79° | 54° | 66° | — | — |
55 years of data from BOSTON