Weather on May 18
Cambridge, MA
55 Years of Data
Avg High
69°F
Avg Low
48°F
Warmest
2017
80°F avg
Coldest
1984
41°F avg
About This Date
May 18th in Cambridge, MA typically brings mild spring weather, with average highs around 69°F and lows near 48°F. Over 55 years of records, the warmest May 18th was in 2017 (80°F average), while the coldest was 1984 (41°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 18th dates historically, with the wettest May 18th recording 4.37" 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 May 18th in Cambridge, MA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 58° | 68° | — | — |
| 2024 | 71° | 55° | 63° | 0.05" | — |
| 2023 | 61° | 36° | 48° | — | — |
| 2022 | 76° | 51° | 63° | — | — |
| 2021 | 78° | 53° | 66° | — | — |
| 2020 | 69° | 52° | 60° | — | — |
| 2019 | 63° | 49° | 56° | 0.53" | — |
| 2018 | 76° | 56° | 66° | — | — |
| 2017warmest | 94° | 67° | 80° | — | — |
| 2016 | 73° | 48° | 61° | — | — |
| 2015 | 81° | 51° | 66° | — | — |
| 2014 | 76° | 50° | 63° | — | — |
| 2013 | 67° | 44° | 55° | — | — |
| 2012 | 69° | 44° | 57° | — | — |
| 2011 | 52° | 47° | 49° | 0.69" | — |
| 2010 | 72° | 49° | 60° | — | — |
| 2009 | 62° | 49° | 55° | — | — |
| 2008 | 73° | 48° | 61° | 0.03" | — |
| 2007 | 46° | 42° | 44° | 4.37" | — |
| 2006 | 76° | 52° | 64° | — | — |
| 2005 | 53° | 46° | 50° | 0.1" | — |
| 2004 | 75° | 53° | 64° | 0.56" | — |
| 2003 | 64° | 39° | 52° | — | — |
| 2002 | 72° | 41° | 56° | 1.8" | — |
| 2001 | 60° | 45° | 52° | — | — |
| 2000 | 75° | 52° | 63° | — | — |
| 1999 | 80° | 50° | 65° | — | — |
| 1998 | 70° | 50° | 60° | 1.47" | — |
| 1997 | 65° | 44° | 54° | — | — |
| 1996 | 69° | 46° | 58° | — | — |
| 1995 | 58° | 46° | 52° | 0.2" | — |
| 1994 | 49° | 45° | 47° | 0.3" | — |
| 1993 | 70° | 43° | 56° | — | — |
| 1992 | 71° | 51° | 61° | — | — |
| 1991 | 82° | 44° | 63° | 1.7" | — |
| 1990 | 50° | 44° | 47° | 0.64" | — |
| 1989 | 76° | 46° | 61° | — | — |
| 1988 | 71° | 54° | 62° | — | — |
| 1987 | 84° | 60° | 72° | — | — |
| 1986 | 81° | 57° | 69° | — | — |
| 1985 | 75° | 52° | 63° | 0.15" | — |
| 1984coldest | 60° | 21° | 41° | — | — |
| 1983 | 60° | 36° | 48° | — | — |
| 1982 | 74° | 43° | 58° | — | — |
| 1981 | 66° | 35° | 51° | — | — |
| 1980 | 69° | 50° | 60° | — | — |
| 1979 | 65° | 54° | 59° | 0.03" | — |
| 1978 | 64° | 47° | 55° | 0.03" | — |
| 1977 | 81° | 66° | 73° | — | — |
| 1976 | — | 56° | — | 0.05" | — |
| 1975 | 75° | 48° | 62° | — | — |
| 1974 | — | 45° | — | — | — |
| 1973 | 67° | 46° | 56° | 0.23" | — |
| 1972 | 68° | 52° | 60° | — | — |
| 1971 | 66° | 48° | 57° | — | — |
55 years of data from CHESTNUT HILL