All-time weather records — Cambridge, MA
Climate change signal in Cambridge
of Cambridge's all-time daily heat records were set in the last decade (91 of 366 records since 2015).
of all-time daily cold records were set in the last decade (22 of 366 records since 2015).
If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:
| Decade | Heat records set | # | Cold records set | # |
|---|---|---|---|---|
| 1960s | 61 | 76 | ||
| 1970s | 65 | 97 | ||
| 1980s | 38 | 75 | ||
| 1990s | 54 | 63 | ||
| 2000s | 38 | 24 | ||
| 2010s | 58 | 23 | ||
| 2020s | 52 | 8 |
Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1962, the latest in 2025. Period of observation: 1962-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 72.0°F — Jan 13, 2020 | -9.9°F — Jan 22, 1984 | 2.91 in — Jan 16, 1983 |
| February | 73.9°F — Feb 22, 2018 | -11.0°F — Feb 4, 2023 | 2.87 in — Feb 10, 2013 |
| March | 89.1°F — Mar 31, 1977 | 0.0°F — Mar 19, 1967 | 3.94 in — Mar 14, 2010 |
| April | 95.0°F — Apr 18, 2002 | 16.0°F — Apr 1, 1969 | 2.96 in — Apr 22, 2000 |
| May | 99.0°F — May 19, 2017 | 24.1°F — May 7, 2001 | 3.78 in — May 26, 1967 |
| June | 102.9°F — Jun 25, 2025 | 37.9°F — Jun 1, 1967 | 7.15 in — Jun 14, 1998 |
| July | 102.9°F — Jul 22, 1977 | 44.1°F — Jul 1, 1988 | 3.57 in — Jul 2, 2021 |
| August | 100.0°F — Aug 3, 1975 | 37.0°F — Aug 30, 1965 | 4.15 in — Aug 1, 1985 |
| September | 100.9°F — Sep 1, 1973 | 32.0°F — Sep 22, 1962 | 5.45 in — Sep 18, 1996 |
| October | 91.9°F — Oct 8, 1963 | 19.9°F — Oct 19, 1974 | 5.69 in — Oct 6, 1962 |
| November | 82.9°F — Nov 7, 2024 | 6.1°F — Nov 24, 1989 | 3.62 in — Nov 30, 1963 |
| December | 78.1°F — Dec 8, 1998 | -9.9°F — Dec 26, 1980 | 4.52 in — Dec 27, 1969 |
Click a month to see every daily record for that month in Cambridge.