Weather on August 15
Boston, MA
55 Years of Data
Avg High
80°F
Avg Low
65°F
Warmest
1985
84°F avg
Coldest
1992
61°F avg
About This Date
August 15th in Boston, MA typically brings warm summer weather, with average highs around 80°F and lows near 65°F. Over 55 years of records, the warmest August 15th was in 1985 (84°F average), while the coldest was 1992 (61°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 40% of August 15th dates historically, with the wettest August 15th recording 3.63" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Boston, MA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 66° | 71° | — | — |
| 2024 | 78° | 65° | 71° | 2.26" | — |
| 2023 | 76° | 67° | 71° | 1.63" | — |
| 2022 | 77° | 63° | 70° | — | — |
| 2021 | 80° | 70° | 75° | — | — |
| 2020 | 70° | 64° | 67° | — | — |
| 2019 | 73° | 63° | 68° | — | — |
| 2018 | 88° | 70° | 79° | — | — |
| 2017 | 80° | 66° | 73° | — | — |
| 2016 | 90° | 73° | 81° | — | — |
| 2015 | 91° | 68° | 80° | 0.2" | — |
| 2014 | 75° | 60° | 68° | — | — |
| 2013 | 78° | 60° | 69° | — | — |
| 2012 | 84° | 66° | 75° | 2.11" | — |
| 2011 | 69° | 63° | 66° | 3.63" | — |
| 2010 | 82° | 61° | 71° | — | — |
| 2009 | 87° | 66° | 77° | — | — |
| 2008 | 75° | 65° | 70° | 0.89" | — |
| 2007 | 86° | 62° | 74° | — | — |
| 2006 | 82° | 70° | 76° | 1.35" | — |
| 2005 | 68° | 62° | 65° | 0.33" | — |
| 2004 | 74° | 64° | 69° | 2.57" | — |
| 2003 | 88° | 69° | 78° | — | — |
| 2002 | 94° | 74° | 84° | — | — |
| 2001 | 73° | 62° | 68° | — | — |
| 2000 | 71° | 63° | 67° | 0.03" | — |
| 1999 | 71° | 62° | 67° | 0.3" | — |
| 1998 | 84° | 65° | 74° | 0.13" | — |
| 1997 | 77° | 64° | 71° | — | — |
| 1996 | 75° | 65° | 70° | — | — |
| 1995 | 83° | 68° | 75° | — | — |
| 1994 | 77° | 61° | 69° | — | — |
| 1993 | 79° | 66° | 72° | — | — |
| 1992coldest | 65° | 58° | 61° | 0.51" | — |
| 1991 | 80° | 70° | 75° | 0.15" | — |
| 1990 | 82° | 66° | 74° | — | — |
| 1989 | 82° | 70° | 76° | 0.18" | — |
| 1988 | 96° | 69° | 83° | 0.25" | — |
| 1987 | 90° | 63° | 76° | — | — |
| 1986 | 84° | 62° | 73° | — | — |
| 1985warmest | 93° | 75° | 84° | — | — |
| 1984 | 93° | 72° | 82° | 0.05" | — |
| 1983 | 74° | 57° | 65° | — | — |
| 1982 | 85° | 65° | 75° | — | — |
| 1981 | 83° | 67° | 75° | — | — |
| 1980 | 84° | 68° | 76° | 0.2" | — |
| 1979 | 71° | 59° | 65° | 0.05" | — |
| 1978 | 80° | 71° | 76° | — | — |
| 1977 | 80° | 64° | 72° | — | — |
| 1976 | 86° | 69° | 78° | 0.56" | — |
| 1975 | 83° | 68° | 75° | — | — |
| 1974 | 76° | 63° | 69° | — | — |
| 1973 | 65° | 62° | 63° | 3.1" | — |
| 1972 | 70° | 57° | 63° | 0.05" | — |
| 1971 | 77° | 64° | 71° | — | — |
55 years of data from BOSTON