Isle 12N Threshold Days by Year (USC00214103)
18 fixed thresholds counted per year at Isle 12N (USC00214103): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Isle 12N Thresholds
- Isle 12N: days with a maximum temperature at or below 0 C (32 F) in 49 years, most in 1972 with 115.
- Isle 12N: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 1988 with 38.
- Isle 12N: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1968 with 34.
- Isle 12N: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1972 with 15.
- 18 fixed thresholds have at least one qualifying day at Isle 12N.
Days at or above 30 C (86 F)
48 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 23 | 13.7 |
| 1965 | 6 | 13.7 |
| 1966 | 18 | 13.7 |
| 1967 | 4 | 13.7 |
| 1968 | 13 | 13.7 |
| 1969 | 18 | 13.7 |
| 1970 | 26 | 15 |
| 1971 | 9 | 15 |
| 1972 | 10 | 15 |
| 1973 | 9 | 15 |
| 1974 | 12 | 15 |
| 1975 | 22 | 15 |
| 1976 | 28 | 15 |
| 1979 | 4 | 15 |
| 1980 | 14 | 16.4 |
| 1984 | 10 | 16.4 |
| 1985 | 4 | 16.4 |
| 1986 | 9 | 16.4 |
| 1987 | 21 | 16.4 |
| 1988 | 38 | 16.4 |
| 1989 | 19 | 16.4 |
| 1991 | 6 | 5.5 |
| 1992 | 1 | 5.5 |
| 1993 | 1 | 5.5 |
| 1994 | 3 | 5.5 |
| 1995 | 11 | 5.5 |
| 1996 | 4 | 5.5 |
| 1998 | 5 | 5.5 |
| 1999 | 13 | 5.5 |
| 2002 | 10 | 10.8 |
| 2003 | 12 | 10.8 |
| 2004 | 5 | 10.8 |
| 2005 | 17 | 10.8 |
| 2006 | 15 | 10.8 |
| 2007 | 21 | 10.8 |
| 2008 | 2 | 10.8 |
| 2009 | 4 | 10.8 |
| 2010 | 8 | 9.3 |
| 2011 | 12 | 9.3 |
| 2012 | 13 | 9.3 |
| 2013 | 17 | 9.3 |
| 2014 | 2 | 9.3 |
| 2015 | 3 | 9.3 |
| 2018 | 14 | 9.3 |
| 2019 | 5 | 9.3 |
| 2020 | 14 | 17 |
| 2021 | 28 | 17 |
| 2022 | 9 | 17 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-18 | 1964-08-06 |
| 1965 | 1965-07-22 | 1965-08-14 |
| 1966 | 1966-06-20 | 1966-07-31 |
| 1967 | 1967-07-10 | 1967-07-22 |
| 1968 | 1968-06-04 | 1968-08-24 |
| 1969 | 1969-05-27 | 1969-08-30 |
| 1970 | 1970-06-07 | 1970-09-05 |
| 1971 | 1971-06-16 | 1971-09-03 |
| 1972 | 1972-05-17 | 1972-08-30 |
| 1973 | 1973-06-10 | 1973-08-29 |
| 1974 | 1974-06-30 | 1974-08-21 |
| 1975 | 1975-05-21 | 1975-08-25 |
| 1976 | 1976-06-07 | 1976-09-13 |
| 1979 | 1979-06-15 | 1979-09-05 |
| 1980 | 1980-04-22 | 1980-09-09 |
| 1984 | 1984-07-12 | 1984-08-28 |
| 1985 | 1985-06-08 | 1985-07-07 |
| 1986 | 1986-06-18 | 1986-07-29 |
| 1987 | 1987-06-06 | 1987-08-15 |
| 1988 | 1988-05-26 | 1988-08-16 |
| 1989 | 1989-06-19 | 1989-08-11 |
| 1991 | 1991-05-15 | 1991-08-28 |
| 1992 | 1992-08-10 | 1992-08-10 |
| 1993 | 1993-08-26 | 1993-08-26 |
| 1994 | 1994-05-30 | 1994-08-26 |
| 1995 | 1995-06-17 | 1995-07-31 |
| 1996 | 1996-06-28 | 1996-08-22 |
| 1998 | 1998-05-15 | 1998-07-15 |
| 1999 | 1999-07-04 | 1999-09-05 |
| 2002 | 2002-06-26 | 2002-09-09 |
| 2003 | 2003-06-17 | 2003-09-09 |
| 2004 | 2004-06-08 | 2004-09-03 |
| 2005 | 2005-06-24 | 2005-09-11 |
| 2006 | 2006-05-29 | 2006-08-05 |
| 2007 | 2007-06-12 | 2007-09-07 |
| 2008 | 2008-07-07 | 2008-08-18 |
| 2009 | 2009-06-23 | 2009-08-15 |
| 2010 | 2010-05-25 | 2010-08-31 |
| 2011 | 2011-06-07 | 2011-07-31 |
| 2012 | 2012-05-19 | 2012-08-30 |
| 2013 | 2013-05-15 | 2013-09-09 |
| 2014 | 2014-07-21 | 2014-07-22 |
| 2015 | 2015-07-27 | 2015-08-16 |
| 2018 | 2018-05-17 | 2018-09-17 |
| 2019 | 2019-06-08 | 2019-07-20 |
| 2020 | 2020-06-02 | 2020-07-26 |
| 2021 | 2021-05-23 | 2021-09-20 |
| 2022 | 2022-06-15 | 2022-09-01 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 48 | 38 | 1988 | 9 |
| 35 C (95 F): Days | 7 | 7 | 1988 | 1 |
| 90 F (32.2 C): Days | 35 | 19 | 1988 | 3 |
| 0 C (32 F): Ice days (max | 49 | 115 | 1972 | 109 |
| 0 C (32 F): Frost days (min | 44 | 204 | 1976 | 178 |
| -10 C (14 F): Days with min | 44 | 117 | 1970 | 94 |
| -20 C (-4 F): Days with min | 44 | 67 | 1989 | 51 |
| -30 C (-22 F): Days with min | 40 | 22 | 1972 | 12 |
| -40 C (-40 F): Days with min | 5 | 3 | 1996 | 3 |
| 20 C (68 F): Tropical nights (min | 37 | 11 | 2013 | 3 |
| 25 C (77 F): Days with min | 1 | 1 | 2006 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 47 | 34 | 1968 | 21 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 46 | 15 | 1972 | 4 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 30 | 4 | 1972 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 1 | 1972 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 1972 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 39 | 8 | 1975 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 3 | 1965 | 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).