Weather on August 18
Cambridge, MA
55 Years of Data
Avg High
83°F
Avg Low
63°F
Warmest
1987
91°F avg
Coldest
1992
61°F avg
About This Date
August 18th in Cambridge, MA typically brings warm summer weather, with average highs around 83°F and lows near 63°F. Over 55 years of records, the warmest August 18th was in 1987 (91°F average), while the coldest was 1992 (61°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 40% of August 18th dates historically, with the wettest August 18th recording 6.35" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 18th in Cambridge, MA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 62° | 77° | 0.53" | — |
| 2024 | 77° | 63° | 70° | 0.36" | — |
| 2023 | 74° | 65° | 69° | 0.05" | — |
| 2022 | 79° | 66° | 72° | — | — |
| 2021 | 85° | 70° | 77° | — | — |
| 2020 | 75° | 63° | 69° | 0.3" | — |
| 2019 | 81° | 70° | 75° | 0.23" | — |
| 2018 | 85° | 72° | 78° | 0.33" | — |
| 2017 | 84° | 63° | 73° | — | — |
| 2016 | 87° | 63° | 75° | — | — |
| 2015 | 95° | 71° | 83° | 0.08" | — |
| 2014 | 80° | 60° | 70° | — | — |
| 2013 | 78° | 60° | 69° | — | — |
| 2012 | 87° | 65° | 76° | 0.08" | — |
| 2011 | 84° | 63° | 73° | 0.05" | — |
| 2010 | 90° | 62° | 76° | — | — |
| 2009 | 91° | 72° | 81° | — | — |
| 2008 | 82° | 65° | 73° | — | — |
| 2007 | 74° | 58° | 66° | 0.1" | — |
| 2006 | 82° | 66° | 74° | — | — |
| 2005 | 75° | 62° | 69° | — | — |
| 2004 | 81° | 61° | 71° | — | — |
| 2003 | 74° | 65° | 69° | — | — |
| 2002 | 96° | 71° | 84° | — | — |
| 2001 | 82° | 66° | 74° | 2.29" | — |
| 2000 | 77° | 50° | 64° | — | — |
| 1999 | 93° | 68° | 81° | — | — |
| 1998 | 75° | 67° | 71° | 3.96" | — |
| 1997 | 92° | 56° | 74° | 0.99" | — |
| 1996 | 88° | 62° | 75° | — | — |
| 1995 | 87° | 68° | 78° | — | — |
| 1994 | 78° | 64° | 71° | 4.06" | — |
| 1993 | 81° | 64° | 72° | 1.09" | — |
| 1992coldest | 63° | 59° | 61° | 3.15" | — |
| 1991 | 92° | 64° | 78° | — | — |
| 1990 | 92° | 68° | 80° | — | — |
| 1989 | 84° | 60° | 72° | — | — |
| 1988 | 87° | 68° | 78° | 0.38" | — |
| 1987warmest | 99° | 84° | 91° | — | — |
| 1986 | 86° | 68° | 77° | 6.35" | — |
| 1985 | 87° | 59° | 73° | — | — |
| 1984 | 85° | 53° | 69° | — | — |
| 1983 | 81° | 62° | 71° | — | — |
| 1982 | 86° | 60° | 73° | 2.34" | — |
| 1981 | — | 52° | — | — | — |
| 1980 | 79° | 52° | 65° | — | — |
| 1979 | 74° | 50° | 62° | — | — |
| 1978 | 94° | 68° | 81° | — | — |
| 1977 | 80° | 58° | 69° | 0.43" | — |
| 1976 | 80° | 59° | 70° | — | — |
| 1975 | 73° | 59° | 66° | — | — |
| 1974 | 85° | 67° | 76° | 0.97" | — |
| 1973 | 70° | 58° | 64° | — | — |
| 1972 | 75° | 54° | 64° | 0.1" | — |
| 1971 | 86° | 64° | 75° | — | — |
55 years of data from CHESTNUT HILL