Weather on August 21
Quincy, MA
55 Years of Data
Avg High
79°F
Avg Low
59°F
Warmest
2009
82°F avg
Coldest
1977
59°F avg
About This Date
August 21st in Quincy, MA typically brings pleasant summer weather, with average highs around 79°F and lows near 59°F. Over 55 years of records, the warmest August 21st was in 2009 (82°F average), while the coldest was 1977 (59°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 21st dates historically, with the wettest August 21st recording 5.18" 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 August 21st in Quincy, MA? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 57° | 63° | — | — |
| 2024 | 74° | 51° | 62° | — | — |
| 2023 | 84° | 65° | 74° | — | — |
| 2022 | 90° | 67° | 78° | — | — |
| 2021 | 84° | 70° | 77° | — | — |
| 2020 | 91° | 61° | 76° | — | — |
| 2019 | 87° | 65° | 76° | 0.15" | — |
| 2018 | 69° | 63° | 66° | — | — |
| 2017 | 88° | 59° | 73° | — | — |
| 2016 | 84° | 63° | 73° | — | — |
| 2015 | 83° | 73° | 78° | 2.11" | — |
| 2014 | 78° | 52° | 65° | — | — |
| 2013 | 89° | 61° | 75° | — | — |
| 2012 | 83° | 61° | 72° | — | — |
| 2011 | 84° | 66° | 75° | 0.03" | — |
| 2010 | 79° | 51° | 65° | — | — |
| 2009warmest | 91° | 74° | 82° | — | — |
| 2008 | 80° | 50° | 65° | — | — |
| 2007 | 69° | 48° | 59° | — | — |
| 2006 | 74° | 62° | 68° | 1.17" | — |
| 2005 | 87° | 68° | 78° | — | — |
| 2004 | 78° | 64° | 71° | 5.18" | — |
| 2003 | 88° | 66° | 77° | — | — |
| 2002 | 78° | 57° | 68° | — | — |
| 2001 | 84° | 65° | 74° | — | — |
| 2000 | 73° | 50° | 62° | — | — |
| 1999 | 64° | 60° | 62° | 0.97" | — |
| 1998 | 77° | 60° | 69° | — | — |
| 1997 | 66° | 58° | 62° | 2.29" | — |
| 1996 | 82° | 64° | 73° | — | — |
| 1995 | 94° | 51° | 72° | — | — |
| 1994 | 83° | 67° | 75° | — | — |
| 1993 | 72° | 62° | 67° | — | — |
| 1992 | 75° | 50° | 63° | — | — |
| 1991 | 64° | 57° | 61° | 2.44" | — |
| 1990 | 65° | 61° | 63° | — | — |
| 1989 | 84° | 67° | 75° | — | — |
| 1988 | 76° | 53° | 64° | — | — |
| 1987 | 82° | 55° | 69° | — | — |
| 1986 | 70° | 53° | 61° | — | — |
| 1985 | 75° | 60° | 68° | — | — |
| 1984 | 75° | 53° | 64° | — | — |
| 1983 | 82° | 64° | 73° | — | — |
| 1982 | 70° | 59° | 64° | — | — |
| 1981 | 77° | 50° | 64° | — | — |
| 1980 | 63° | 60° | 61° | 0.1" | — |
| 1979 | 72° | 56° | 64° | — | — |
| 1978 | 73° | 64° | 69° | 1.7" | — |
| 1977coldest | 72° | 47° | 59° | — | — |
| 1976 | 91° | 60° | 76° | — | — |
| 1975 | 79° | 47° | 63° | — | — |
| 1974 | 85° | 58° | 71° | — | — |
| 1973 | 74° | 54° | 64° | — | — |
| 1972 | 82° | 53° | 68° | — | — |
| 1971 | 87° | 67° | 77° | — | — |
55 years of data from HINGHAM