St John Threshold Days by Year (USC00457267)
16 fixed thresholds counted per year at St John (USC00457267): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for St John Thresholds
- St John: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1969 with 18.
- St John: nights with a minimum temperature at or below 0 C (32 F) in 55 years, most in 1985 with 212.
- St John: nights with a minimum temperature at or below -10 C (14 F) in 55 years, most in 1985 with 53.
- St John: days with a maximum temperature at or above 30 C (86 F) in 47 years, most in 1967 with 65.
- 16 fixed thresholds have at least one qualifying day at St John.
Days at or above 30 C (86 F)
47 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 25 | 40.3 |
| 1965 | 35 | 40.3 |
| 1966 | 36 | 40.3 |
| 1967 | 65 | 40.3 |
| 1968 | 37 | 40.3 |
| 1969 | 44 | 40.3 |
| 1970 | 53 | 41.5 |
| 1971 | 43 | 41.5 |
| 1972 | 35 | 41.5 |
| 1973 | 49 | 41.5 |
| 1974 | 47 | 41.5 |
| 1975 | 30 | 41.5 |
| 1976 | 30 | 41.5 |
| 1977 | 47 | 41.5 |
| 1978 | 33 | 41.5 |
| 1979 | 48 | 41.5 |
| 1980 | 28 | 44.3 |
| 1981 | 40 | 44.3 |
| 1982 | 38 | 44.3 |
| 1985 | 49 | 44.3 |
| 1986 | 54 | 44.3 |
| 1987 | 65 | 44.3 |
| 1988 | 47 | 44.3 |
| 1989 | 33 | 44.3 |
| 1990 | 56 | 42.6 |
| 1991 | 36 | 42.6 |
| 1992 | 47 | 42.6 |
| 1993 | 21 | 42.6 |
| 1994 | 54 | 42.6 |
| 1995 | 30 | 42.6 |
| 1996 | 46 | 42.6 |
| 1997 | 37 | 42.6 |
| 1998 | 55 | 42.6 |
| 1999 | 44 | 42.6 |
| 2000 | 38 | 46.5 |
| 2001 | 53 | 46.5 |
| 2002 | 38 | 46.5 |
| 2003 | 57 | 46.5 |
| 2011 | 41 | 44.6 |
| 2012 | 50 | 44.6 |
| 2013 | 62 | 44.6 |
| 2014 | 51 | 44.6 |
| 2015 | 47 | 44.6 |
| 2016 | 42 | 44.6 |
| 2017 | 52 | 44.6 |
| 2018 | 34 | 44.6 |
| 2019 | 22 | 44.6 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-07-01 | 1964-08-23 |
| 1965 | 1965-06-10 | 1965-08-19 |
| 1966 | 1966-05-03 | 1966-09-23 |
| 1967 | 1967-06-15 | 1967-09-28 |
| 1968 | 1968-06-18 | 1968-09-10 |
| 1969 | 1969-05-23 | 1969-09-12 |
| 1970 | 1970-06-02 | 1970-08-31 |
| 1971 | 1971-06-21 | 1971-08-30 |
| 1972 | 1972-05-29 | 1972-09-04 |
| 1973 | 1973-05-14 | 1973-09-12 |
| 1974 | 1974-06-11 | 1974-09-25 |
| 1975 | 1975-07-03 | 1975-10-02 |
| 1976 | 1976-06-28 | 1976-09-21 |
| 1977 | 1977-04-23 | 1977-08-21 |
| 1978 | 1978-06-03 | 1978-09-03 |
| 1979 | 1979-06-11 | 1979-09-20 |
| 1980 | 1980-05-05 | 1980-10-07 |
| 1981 | 1981-06-26 | 1981-09-19 |
| 1982 | 1982-06-16 | 1982-09-03 |
| 1985 | 1985-05-23 | 1985-08-30 |
| 1986 | 1986-05-25 | 1986-08-29 |
| 1987 | 1987-04-27 | 1987-10-02 |
| 1988 | 1988-05-12 | 1988-09-16 |
| 1989 | 1989-06-12 | 1989-09-30 |
| 1990 | 1990-06-24 | 1990-09-25 |
| 1991 | 1991-07-02 | 1991-09-27 |
| 1992 | 1992-05-05 | 1992-10-01 |
| 1993 | 1993-05-11 | 1993-09-11 |
| 1994 | 1994-06-20 | 1994-09-24 |
| 1995 | 1995-05-29 | 1995-09-17 |
| 1996 | 1996-06-07 | 1996-09-12 |
| 1997 | 1997-07-04 | 1997-09-26 |
| 1998 | 1998-06-30 | 1998-09-16 |
| 1999 | 1999-05-24 | 1999-09-22 |
| 2000 | 2000-06-28 | 2000-09-15 |
| 2001 | 2001-05-23 | 2001-09-24 |
| 2002 | 2002-06-14 | 2002-09-14 |
| 2003 | 2003-05-24 | 2003-09-07 |
| 2011 | 2011-07-06 | 2011-09-25 |
| 2012 | 2012-05-14 | 2012-09-22 |
| 2013 | 2013-05-10 | 2013-09-16 |
| 2014 | 2014-07-01 | 2014-09-22 |
| 2015 | 2015-06-06 | 2015-09-13 |
| 2016 | 2016-06-04 | 2016-09-27 |
| 2017 | 2017-05-29 | 2017-09-12 |
| 2018 | 2018-07-05 | 2018-09-07 |
| 2019 | 2019-06-13 | 2019-09-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 47 | 65 | 1967 | 22 |
| 35 C (95 F): Days | 46 | 26 | 1998 | 2 |
| 40 C (104 F): Days | 3 | 1 | 1967 | 1 |
| 90 F (32.2 C): Days | 47 | 42 | 1970 | 10 |
| 100 F (37.8 C): Days | 27 | 6 | 1994 | 3 |
| 0 C (32 F): Ice days (max | 47 | 72 | 1985 | 36 |
| 0 C (32 F): Frost days (min | 55 | 212 | 1985 | 98 |
| -10 C (14 F): Days with min | 55 | 53 | 1985 | 18 |
| -20 C (-4 F): Days with min | 26 | 10 | 1979 | 3 |
| -30 C (-22 F): Days with min | 3 | 1 | 1968 | 1 |
| 20 C (68 F): Tropical nights (min | 17 | 5 | 2015 | 1 |
| 25 C (77 F): Days with min | 1 | 1 | 2012 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 56 | 18 | 1969 | 4 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 27 | 4 | 1994 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 33 | 6 | 1996 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 1 | 1968 | 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).