Cambridge Threshold Days by Year (USC00331197)
17 fixed thresholds counted per year at Cambridge (USC00331197): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Cambridge Thresholds
- Cambridge: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 2011 with 51.
- Cambridge: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 2018 with 17.
- Cambridge: nights with a minimum temperature at or below 0 C (32 F) in 55 years, most in 1976 with 146.
- Cambridge: nights with a minimum temperature at or below -10 C (14 F) in 55 years, most in 1977 with 47.
- 17 fixed thresholds have at least one qualifying day at Cambridge.
Days at or above 30 C (86 F)
53 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 53 | 47 |
| 1965 | 44 | 47 |
| 1966 | 58 | 47 |
| 1967 | 33 | 47 |
| 1968 | 48 | 47 |
| 1969 | 46 | 47 |
| 1970 | 52 | 37.9 |
| 1971 | 36 | 37.9 |
| 1972 | 24 | 37.9 |
| 1973 | 40 | 37.9 |
| 1974 | 30 | 37.9 |
| 1975 | 44 | 37.9 |
| 1976 | 27 | 37.9 |
| 1977 | 51 | 37.9 |
| 1978 | 47 | 37.9 |
| 1979 | 28 | 37.9 |
| 1980 | 46 | 46.6 |
| 1982 | 43 | 46.6 |
| 1983 | 73 | 46.6 |
| 1984 | 43 | 46.6 |
| 1985 | 37 | 46.6 |
| 1986 | 39 | 46.6 |
| 1988 | 64 | 46.6 |
| 1989 | 28 | 46.6 |
| 1990 | 36 | 44.9 |
| 1991 | 76 | 44.9 |
| 1992 | 15 | 44.9 |
| 1993 | 59 | 44.9 |
| 1994 | 30 | 44.9 |
| 1995 | 53 | 44.9 |
| 1996 | 37 | 44.9 |
| 1997 | 30 | 44.9 |
| 1998 | 53 | 44.9 |
| 1999 | 60 | 44.9 |
| 2000 | 29 | 44.6 |
| 2001 | 40 | 44.6 |
| 2002 | 66 | 44.6 |
| 2003 | 23 | 44.6 |
| 2005 | 62 | 44.6 |
| 2006 | 38 | 44.6 |
| 2007 | 69 | 44.6 |
| 2008 | 44 | 44.6 |
| 2009 | 30 | 44.6 |
| 2011 | 61 | 53.3 |
| 2012 | 69 | 53.3 |
| 2013 | 36 | 53.3 |
| 2014 | 29 | 53.3 |
| 2015 | 54 | 53.3 |
| 2016 | 76 | 53.3 |
| 2017 | 42 | 53.3 |
| 2018 | 55 | 53.3 |
| 2019 | 58 | 53.3 |
| 2020 | 47 | 47 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-06 | 1964-09-17 |
| 1965 | 1965-05-09 | 1965-09-22 |
| 1966 | 1966-05-23 | 1966-09-03 |
| 1967 | 1967-05-27 | 1967-08-17 |
| 1968 | 1968-06-06 | 1968-09-22 |
| 1969 | 1969-05-06 | 1969-10-13 |
| 1970 | 1970-04-30 | 1970-09-26 |
| 1971 | 1971-05-18 | 1971-09-29 |
| 1972 | 1972-05-24 | 1972-09-17 |
| 1973 | 1973-06-09 | 1973-09-27 |
| 1974 | 1974-05-14 | 1974-08-27 |
| 1975 | 1975-05-20 | 1975-08-29 |
| 1976 | 1976-04-18 | 1976-09-08 |
| 1977 | 1977-05-16 | 1977-09-05 |
| 1978 | 1978-05-20 | 1978-09-22 |
| 1979 | 1979-05-08 | 1979-09-04 |
| 1980 | 1980-05-29 | 1980-09-21 |
| 1982 | 1982-05-06 | 1982-09-14 |
| 1983 | 1983-06-11 | 1983-09-20 |
| 1984 | 1984-05-22 | 1984-09-22 |
| 1985 | 1985-04-20 | 1985-09-19 |
| 1986 | 1986-04-27 | 1986-09-30 |
| 1988 | 1988-05-15 | 1988-08-28 |
| 1989 | 1989-05-30 | 1989-09-09 |
| 1990 | 1990-04-25 | 1990-09-06 |
| 1991 | 1991-05-12 | 1991-09-17 |
| 1992 | 1992-05-22 | 1992-08-26 |
| 1993 | 1993-05-09 | 1993-09-15 |
| 1994 | 1994-06-07 | 1994-09-14 |
| 1995 | 1995-06-18 | 1995-09-06 |
| 1996 | 1996-05-10 | 1996-08-23 |
| 1997 | 1997-05-19 | 1997-09-02 |
| 1998 | 1998-05-14 | 1998-09-27 |
| 1999 | 1999-05-12 | 1999-09-12 |
| 2000 | 2000-05-06 | 2000-09-02 |
| 2001 | 2001-05-03 | 2001-09-09 |
| 2002 | 2002-04-16 | 2002-10-03 |
| 2003 | 2003-06-23 | 2003-08-29 |
| 2005 | 2005-06-05 | 2005-09-22 |
| 2006 | 2006-05-28 | 2006-08-27 |
| 2007 | 2007-05-01 | 2007-10-09 |
| 2008 | 2008-06-05 | 2008-09-15 |
| 2009 | 2009-04-24 | 2009-08-26 |
| 2011 | 2011-05-22 | 2011-09-04 |
| 2012 | 2012-05-02 | 2012-09-07 |
| 2013 | 2013-04-18 | 2013-09-11 |
| 2014 | 2014-05-07 | 2014-09-06 |
| 2015 | 2015-05-06 | 2015-09-16 |
| 2016 | 2016-05-27 | 2016-09-23 |
| 2017 | 2017-04-30 | 2017-09-27 |
| 2018 | 2018-05-02 | 2018-10-08 |
| 2019 | 2019-05-18 | 2019-10-04 |
| 2020 | 2020-05-25 | 2020-09-11 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 53 | 76 | 1991 | 47 |
| 35 C (95 F): Days | 26 | 15 | 1988 | 1 |
| 90 F (32.2 C): Days | 52 | 41 | 1988 | 19 |
| 100 F (37.8 C): Days | 3 | 3 | 1988 | 2 |
| 0 C (32 F): Ice days (max | 53 | 46 | 1978 | 9 |
| 0 C (32 F): Frost days (min | 55 | 146 | 1976 | 119 |
| -10 C (14 F): Days with min | 55 | 47 | 1977 | 13 |
| -20 C (-4 F): Days with min | 34 | 16 | 1977 | 5 |
| -30 C (-22 F): Days with min | 1 | 2 | 1994 | 2 |
| 20 C (68 F): Tropical nights (min | 55 | 42 | 2016 | 26 |
| 25 C (77 F): Days with min | 3 | 1 | 1988 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 59 | 51 | 2011 | 45 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 59 | 17 | 2018 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 33 | 5 | 1998 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 3 | 1 | 1980 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 29 | 4 | 1979 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 1 | 1966 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).