Weather on June 18
Boston, MA
55 Years of Data
Avg High
78°F
Avg Low
61°F
Warmest
1995
80°F avg
Coldest
2005
58°F avg
About This Date
June 18th in Boston, MA typically brings pleasant summer weather, with average highs around 78°F and lows near 61°F. Over 55 years of records, the warmest June 18th was in 1995 (80°F average), while the coldest was 2005 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 33% of June 18th dates historically, with the wettest June 18th recording 1.6" of rain. The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
Planning for June 18th in Boston, MA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 65° | 71° | — | — |
| 2024 | 92° | 67° | 79° | — | — |
| 2023 | 67° | 59° | 63° | 0.1" | — |
| 2022 | 73° | 55° | 64° | — | — |
| 2021 | 85° | 60° | 72° | — | — |
| 2020 | 88° | 62° | 75° | — | — |
| 2019 | 70° | 61° | 65° | 0.25" | — |
| 2018 | 89° | 66° | 78° | 0.33" | — |
| 2017 | 84° | 68° | 76° | — | — |
| 2016 | 72° | 60° | 66° | — | — |
| 2015 | 76° | 57° | 66° | — | — |
| 2014 | 87° | 68° | 78° | — | — |
| 2013 | 71° | 59° | 65° | 1.6" | — |
| 2012 | 64° | 55° | 60° | — | — |
| 2011 | 83° | 64° | 73° | 0.18" | — |
| 2010 | 88° | 63° | 75° | — | — |
| 2009 | 68° | 56° | 62° | 1.09" | — |
| 2008 | 74° | 58° | 66° | — | — |
| 2007 | 81° | 64° | 72° | — | — |
| 2006 | 91° | 64° | 78° | — | — |
| 2005coldest | 63° | 53° | 58° | — | — |
| 2004 | 66° | 60° | 63° | 0.23" | — |
| 2003 | 67° | 57° | 62° | 0.41" | — |
| 2002 | 77° | 59° | 68° | — | — |
| 2001 | 84° | 67° | 75° | — | — |
| 2000 | 74° | 59° | 66° | 0.66" | — |
| 1999 | 67° | 55° | 61° | — | — |
| 1998 | 72° | 59° | 65° | 0.33" | — |
| 1997 | 74° | 63° | 68° | 0.69" | — |
| 1996 | 72° | 60° | 66° | — | — |
| 1995warmest | 91° | 68° | 80° | — | — |
| 1994 | 89° | 70° | 79° | — | — |
| 1993 | 92° | 65° | 78° | — | — |
| 1992 | 80° | 58° | 69° | — | — |
| 1991 | 66° | 55° | 61° | — | — |
| 1990 | 82° | 63° | 72° | — | — |
| 1989 | 82° | 65° | 73° | 0.2" | — |
| 1988 | 76° | 61° | 68° | 0.79" | — |
| 1987 | 80° | 57° | 69° | — | — |
| 1986 | 72° | 54° | 63° | — | — |
| 1985 | 76° | 63° | 69° | 0.28" | — |
| 1984 | 72° | 61° | 66° | 0.08" | — |
| 1983 | 87° | 60° | 74° | — | — |
| 1982 | 77° | 61° | 69° | — | — |
| 1981 | 76° | 65° | 70° | — | — |
| 1980 | 79° | 57° | 68° | — | — |
| 1979 | 90° | 60° | 75° | 0.46" | — |
| 1978 | 77° | 58° | 67° | — | — |
| 1977 | 88° | 60° | 74° | 0.48" | — |
| 1976 | 81° | 70° | 75° | — | — |
| 1975 | 84° | 68° | 76° | — | — |
| 1974 | 81° | 66° | 73° | — | — |
| 1973 | 68° | 55° | 62° | — | — |
| 1972 | 65° | 56° | 60° | 0.05" | — |
| 1971 | 87° | 62° | 75° | — | — |
55 years of data from BOSTON