Weather on July 31
Cambridge, MA
55 Years of Data
Avg High
83°F
Avg Low
62°F
Warmest
2025
85°F avg
Coldest
1977
62°F avg
About This Date
July 31st in Cambridge, MA typically brings warm summer weather, with average highs around 83°F and lows near 62°F. Over 55 years of records, the warmest July 31st was in 2025 (85°F average), while the coldest was 1977 (62°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 22% of July 31st dates historically, with the wettest July 31st recording 3.99" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for July 31st in Cambridge, MA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 97° | 74° | 85° | — | — |
| 2024 | 91° | 73° | 82° | 0.03" | — |
| 2023 | 78° | 57° | 68° | 0.1" | — |
| 2022 | 88° | 63° | 75° | — | — |
| 2021 | 83° | 56° | 69° | — | — |
| 2020 | 93° | 71° | 82° | — | — |
| 2019 | 97° | 72° | 84° | — | — |
| 2018 | 86° | 63° | 74° | — | — |
| 2017 | 80° | 56° | 68° | — | — |
| 2016 | 87° | 72° | 79° | 0.03" | — |
| 2015 | 95° | 69° | 82° | 0.13" | — |
| 2014 | 80° | 58° | 69° | — | — |
| 2013 | 83° | 62° | 72° | — | — |
| 2012 | 83° | 60° | 71° | — | — |
| 2011 | 87° | 61° | 74° | — | — |
| 2010 | 81° | 59° | 70° | — | — |
| 2009 | 86° | 64° | 75° | 0.81" | — |
| 2008 | 85° | 67° | 76° | 0.05" | — |
| 2007 | 81° | 68° | 74° | — | — |
| 2006 | 80° | 66° | 73° | — | — |
| 2005 | 69° | 64° | 67° | — | — |
| 2004 | 89° | 72° | 80° | — | — |
| 2003 | 73° | 62° | 68° | — | — |
| 2002 | 96° | 66° | 81° | — | — |
| 2001 | 80° | 52° | 66° | — | — |
| 2000 | 75° | 63° | 69° | 2.03" | — |
| 1999 | 90° | 69° | 79° | — | — |
| 1998 | 86° | 64° | 75° | 0.94" | — |
| 1997 | 85° | 58° | 71° | — | — |
| 1996 | 80° | 48° | 64° | — | — |
| 1995 | 92° | 60° | 76° | — | — |
| 1994 | 92° | 70° | 81° | — | — |
| 1993 | 86° | 61° | 73° | — | — |
| 1992 | 80° | 55° | 68° | — | — |
| 1991 | 77° | 62° | 70° | — | — |
| 1990 | 77° | 62° | 70° | — | — |
| 1989 | 84° | 58° | 71° | 1.52" | — |
| 1988 | 78° | 74° | 76° | — | — |
| 1987 | 82° | 63° | 72° | — | — |
| 1986 | 67° | 59° | 63° | 0.18" | — |
| 1985 | 87° | 62° | 75° | — | — |
| 1984 | 64° | 65° | 64° | — | — |
| 1983 | 89° | 63° | 76° | — | — |
| 1982 | 82° | 58° | 70° | — | — |
| 1981 | 81° | 53° | 67° | — | — |
| 1980 | 87° | 63° | 75° | — | — |
| 1979 | 89° | 64° | 77° | — | — |
| 1978 | 74° | 58° | 66° | — | — |
| 1977coldest | 76° | 48° | 62° | — | — |
| 1976 | 68° | 61° | 64° | 3.99" | — |
| 1975 | 79° | 61° | 70° | — | — |
| 1974 | 87° | 62° | 75° | — | — |
| 1973 | 84° | 60° | 72° | — | — |
| 1972 | 80° | 55° | 68° | — | — |
| 1971 | 78° | 70° | 74° | 2.69" | — |
55 years of data from CHESTNUT HILL