Weather on June 21
Cambridge, MA
55 Years of Data
Avg High
82°F
Avg Low
59°F
Warmest
2012
84°F avg
Coldest
1986
57°F avg
About This Date
June 21st in Cambridge, MA typically brings warm summer weather, with average highs around 82°F and lows near 59°F. Over 55 years of records, the warmest June 21st was in 2012 (84°F average), while the coldest was 1986 (57°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 27% of June 21st dates historically, with the wettest June 21st recording 3.81" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Cambridge, MA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 63° | 74° | — | — |
| 2024 | 98° | 68° | 83° | 0.41" | — |
| 2023 | 71° | 52° | 61° | — | — |
| 2022 | 79° | 50° | 64° | — | — |
| 2021 | 90° | 67° | 78° | — | — |
| 2020 | 93° | 68° | 81° | — | — |
| 2019 | 71° | 58° | 64° | 3.81" | — |
| 2018 | 85° | 60° | 72° | — | — |
| 2017 | 89° | 62° | 76° | — | — |
| 2016 | 86° | 64° | 75° | 0.13" | — |
| 2015 | 84° | 57° | 71° | 3.28" | — |
| 2014 | 77° | 49° | 63° | — | — |
| 2013 | 79° | 59° | 69° | — | — |
| 2012warmest | 95° | 73° | 84° | — | — |
| 2011 | 81° | 57° | 69° | — | — |
| 2010 | 89° | 66° | 78° | 1.47" | — |
| 2009 | 78° | 60° | 69° | — | — |
| 2008 | 79° | 59° | 69° | 0.53" | — |
| 2007 | 81° | 62° | 71° | 0.23" | — |
| 2006 | 79° | 64° | 71° | — | — |
| 2005 | 84° | 57° | 71° | — | — |
| 2004 | 78° | 59° | 69° | — | — |
| 2003 | 66° | 58° | 62° | 0.53" | — |
| 2002 | 80° | 56° | 68° | — | — |
| 2001 | 92° | 65° | 78° | 0.18" | — |
| 2000 | 84° | 59° | 72° | — | — |
| 1999 | 84° | 54° | 69° | — | — |
| 1998 | 80° | 60° | 70° | — | — |
| 1997 | 92° | 68° | 80° | — | — |
| 1996 | 71° | 59° | 65° | 0.1" | — |
| 1995 | 88° | 56° | 72° | — | — |
| 1994 | 84° | 64° | 74° | — | — |
| 1993 | 70° | 62° | 66° | 0.05" | — |
| 1992 | 80° | 65° | 72° | 0.1" | — |
| 1991 | 90° | 61° | 75° | — | — |
| 1990 | 70° | 58° | 64° | — | — |
| 1989 | 86° | 60° | 73° | — | — |
| 1988 | 92° | 70° | 81° | — | — |
| 1987 | 90° | 59° | 74° | — | — |
| 1986coldest | 65° | 50° | 57° | 0.81" | — |
| 1985 | 79° | 57° | 68° | — | — |
| 1984 | 79° | 54° | 66° | — | — |
| 1983 | 70° | 59° | 64° | — | — |
| 1982 | 72° | 50° | 61° | — | — |
| 1981 | 78° | 55° | 67° | 0.41" | — |
| 1980 | 74° | 52° | 63° | 0.58" | — |
| 1979 | 79° | 47° | 63° | — | — |
| 1978 | 86° | 56° | 71° | — | — |
| 1977 | 84° | 57° | 71° | — | — |
| 1976 | 85° | 70° | 77° | — | — |
| 1975 | 79° | 49° | 64° | — | — |
| 1974 | 84° | 55° | 70° | — | — |
| 1973 | — | 59° | — | — | — |
| 1972 | 80° | 55° | 68° | — | — |
| 1971 | 86° | 62° | 74° | — | — |
55 years of data from CHESTNUT HILL