Long Is 1N Threshold Days by Year

6 fixed thresholds counted per year at Long Is 1N (USC00144807): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Long Is 1N Thresholds

Long Is 1N: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1992 with 31.
Long Is 1N: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1996 with 16.
Long Is 1N: days with 10 cm (3.9 in) or more of snowfall in 60 years, most in 1944 with 6.
Long Is 1N: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1951 with 4.
6 fixed thresholds have at least one qualifying day at Long Is 1N.

Days with 10 mm (0.39 in) or more of precipitation

70 years with a qualifying day

Days per year at Long Is 1N with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1992.

Days with 10 mm (0.39 in) or more of precipitation per year at Long Is 1N
Year	Days	Decade average
1942	21	17.9
1943	12	17.9
1944	22	17.9
1945	13	17.9
1946	26	17.9
1947	16	17.9
1948	12	17.9
1949	21	17.9
1950	20	15.8
1951	28	15.8
1952	9	15.8
1953	16	15.8
1954	14	15.8
1955	13	15.8
1956	10	15.8
1957	18	15.8
1958	15	15.8
1959	15	15.8
1960	16	19.1
1961	19	19.1
1962	24	19.1
1963	15	19.1
1964	11	19.1
1965	29	19.1
1966	15	19.1
1967	19	19.1
1968	22	19.1
1969	21	19.1
1970	16	19.6
1971	21	19.6
1972	21	19.6
1973	30	19.6
1974	11	19.6
1975	21	19.6
1976	13	19.6
1977	24	19.6
1978	17	19.6
1979	22	19.6
1980	21	18.3
1981	23	18.3
1982	26	18.3
1983	18	18.3
1984	17	18.3
1985	17	18.3
1986	15	18.3
1987	22	18.3
1988	12	18.3
1989	12	18.3
1990	17	22.2
1991	20	22.2
1992	31	22.2
1993	31	22.2
1994	18	22.2
1995	20	22.2
1996	31	22.2
1997	14	22.2
1998	17	22.2
1999	23	22.2
2000	20	20.3
2001	24	20.3
2002	12	20.3
2003	19	20.3
2004	16	20.3
2005	23	20.3
2007	22	20.3
2008	26	20.3
2010	23	14.3
2012	8	14.3
2013	9	14.3
2014	17	14.3

For each year, a bar from the first to the last day at Long Is 1N meeting 10 mm (0.39 in).

First to last qualifying date each year at Long Is 1N
Year	First date	Last date
1942	1942-03-25	1942-11-21
1943	1943-04-09	1943-08-30
1944	1944-01-26	1944-11-25
1945	1945-04-15	1945-12-24
1946	1946-03-16	1946-11-09
1947	1947-04-10	1947-12-04
1948	1948-05-03	1948-11-05
1949	1949-03-30	1949-10-10
1950	1950-02-12	1950-10-02
1951	1951-01-02	1951-09-08
1952	1952-07-05	1952-12-22
1953	1953-02-20	1953-12-03
1954	1954-02-20	1954-10-07
1955	1955-05-18	1955-09-26
1956	1956-04-03	1956-10-30
1957	1957-03-24	1957-10-14
1958	1958-02-27	1958-08-23
1959	1959-03-26	1959-10-31
1960	1960-01-14	1960-10-19
1961	1961-03-06	1961-11-16
1962	1962-02-15	1962-12-20
1963	1963-03-11	1963-09-23
1964	1964-03-20	1964-09-16
1965	1965-01-23	1965-10-19
1966	1966-02-09	1966-10-15
1967	1967-04-13	1967-10-29
1968	1968-04-20	1968-12-22
1969	1969-03-08	1969-10-30
1970	1970-03-31	1970-10-27
1971	1971-01-03	1971-11-17
1972	1972-03-24	1972-11-13
1973	1973-01-27	1973-12-24
1974	1974-04-04	1974-12-15
1975	1975-02-11	1975-11-21
1976	1976-04-16	1976-10-07
1977	1977-02-23	1977-09-03
1978	1978-02-13	1978-11-26
1979	1979-01-13	1979-10-31
1980	1980-01-19	1980-10-28
1981	1981-03-04	1981-12-01
1982	1982-02-02	1982-12-28
1983	1983-03-05	1983-11-27
1984	1984-02-18	1984-12-16
1985	1985-01-09	1985-10-18
1986	1986-04-18	1986-11-02
1987	1987-02-27	1987-11-16
1988	1988-01-19	1988-09-16
1989	1989-05-15	1989-10-26
1990	1990-01-20	1990-11-03
1991	1991-03-18	1991-12-12
1992	1992-01-02	1992-11-25
1993	1993-01-09	1993-11-12
1994	1994-01-27	1994-11-27
1995	1995-03-26	1995-09-21
1996	1996-01-18	1996-11-17
1997	1997-02-24	1997-11-29
1998	1998-02-10	1998-11-03
1999	1999-01-31	1999-09-12
2000	2000-02-12	2000-10-29
2001	2001-02-09	2001-11-25
2002	2002-05-11	2002-10-30
2003	2003-02-15	2003-10-11
2004	2004-03-01	2004-11-18
2005	2005-01-05	2005-11-28
2007	2007-01-21	2007-12-11
2008	2008-03-17	2008-11-11
2010	2010-03-09	2010-09-23
2012	2012-02-04	2012-12-15
2013	2013-02-22	2013-11-06
2014	2014-04-14	2014-12-15

Every Fixed Threshold

Fixed thresholds at Long Is 1N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	70	31	1992	17
25 mm (0.98 in): Days with 25 mm or more rain	69	16	1996	7
50 mm (1.97 in): Days with 50 mm or more rain	43	4	1951	3
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1957	1
10 cm (3.9 in): Days with 10 cm or more snowfall	60	6	1944	2
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

Data for Long Is 1N threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Long Is 1N Threshold Days by Year

Key Facts for Long Is 1N Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

Related