Longwood Threshold Days by Year (ASN00023727)

4 fixed thresholds counted per year at Longwood (ASN00023727): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Longwood Thresholds

Longwood: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1992 with 49.
Longwood: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1981 with 15.
Longwood: days with 50 mm (1.97 in) or more of precipitation in 38 years, most in 1973 with 4.
Longwood: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1969 with 1.
4 fixed thresholds have at least one qualifying day at Longwood.

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

71 years with a qualifying day

Days per year at Longwood with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1992.

Days with 10 mm (0.39 in) or more of precipitation per year at Longwood
Year	Days	Decade average
1950	21	27.5
1951	37	27.5
1952	27	27.5
1953	31	27.5
1954	19	27.5
1955	43	27.5
1956	40	27.5
1957	16	27.5
1958	26	27.5
1959	15	27.5
1960	36	29.2
1961	23	29.2
1962	26	29.2
1963	32	29.2
1964	35	29.2
1965	23	29.2
1966	32	29.2
1967	15	29.2
1968	43	29.2
1969	27	29.2
1970	43	34
1971	43	34
1972	28	34
1973	42	34
1974	34	34
1975	30	34
1976	23	34
1977	24	34
1978	28	34
1979	45	34
1980	30	31.8
1981	48	31.8
1982	24	31.8
1983	34	31.8
1984	26	31.8
1985	27	31.8
1986	34	31.8
1987	31	31.8
1988	32	31.8
1989	32	31.8
1990	26	29.9
1991	31	29.9
1992	49	29.9
1993	30	29.9
1994	20	29.9
1995	28	29.9
1996	36	29.9
1997	25	29.9
1998	22	29.9
1999	32	29.9
2000	36	32.1
2001	44	32.1
2002	25	32.1
2003	39	32.1
2004	36	32.1
2005	35	32.1
2006	24	32.1
2007	33	32.1
2008	20	32.1
2009	29	32.1
2010	32	27.4
2011	27	27.4
2012	26	27.4
2013	30	27.4
2014	27	27.4
2015	25	27.4
2018	25	27.4
2019	27	27.4
2020	26	32
2021	35	32
2022	35	32

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

First to last qualifying date each year at Longwood
Year	First date	Last date
1950	1950-02-01	1950-12-20
1951	1951-04-17	1951-12-15
1952	1952-01-24	1952-12-07
1953	1953-02-05	1953-11-26
1954	1954-01-30	1954-12-12
1955	1955-02-09	1955-12-03
1956	1956-01-20	1956-10-18
1957	1957-03-14	1957-11-18
1958	1958-03-27	1958-10-24
1959	1959-02-13	1959-12-26
1960	1960-02-01	1960-11-12
1961	1961-04-04	1961-11-17
1962	1962-02-20	1962-12-29
1963	1963-01-13	1963-10-27
1964	1964-04-08	1964-12-01
1965	1965-04-16	1965-12-24
1966	1966-02-15	1966-12-04
1967	1967-01-13	1967-12-30
1968	1968-01-20	1968-12-03
1969	1969-02-09	1969-12-23
1970	1970-01-01	1970-12-11
1971	1971-03-15	1971-12-31
1972	1972-01-07	1972-12-26
1973	1973-01-30	1973-12-30
1974	1974-01-13	1974-12-27
1975	1975-01-10	1975-11-03
1976	1976-01-12	1976-12-23
1977	1977-01-14	1977-12-02
1978	1978-02-11	1978-12-05
1979	1979-01-17	1979-12-30
1980	1980-04-18	1980-12-02
1981	1981-01-10	1981-12-13
1982	1982-01-07	1982-12-28
1983	1983-03-03	1983-12-06
1984	1984-03-25	1984-11-10
1985	1985-03-16	1985-12-09
1986	1986-04-17	1986-12-07
1987	1987-01-25	1987-12-09
1988	1988-01-24	1988-12-25
1989	1989-04-12	1989-12-02
1990	1990-04-21	1990-12-10
1991	1991-04-01	1991-11-06
1992	1992-03-01	1992-12-21
1993	1993-01-21	1993-12-23
1994	1994-01-06	1994-11-06
1995	1995-01-14	1995-10-22
1996	1996-01-01	1996-12-06
1997	1997-01-15	1997-12-18
1998	1998-02-08	1998-11-11
1999	1999-03-07	1999-12-03
2000	2000-02-20	2000-12-22
2001	2001-01-26	2001-12-06
2002	2002-01-21	2002-12-31
2003	2003-01-01	2003-12-22
2004	2004-03-09	2004-12-08
2005	2005-02-10	2005-12-17
2006	2006-01-02	2006-12-22
2007	2007-01-07	2007-12-22
2008	2008-04-02	2008-08-31
2009	2009-03-04	2009-12-17
2010	2010-03-09	2010-12-19
2011	2011-01-14	2011-12-18
2012	2012-01-08	2012-10-11
2013	2013-04-22	2013-10-17
2014	2014-02-14	2014-11-21
2015	2015-01-08	2015-11-04
2018	2018-04-14	2018-12-14
2019	2019-05-01	2019-12-02
2020	2020-01-20	2020-10-30
2021	2021-01-26	2021-11-24
2022	2022-01-23	2022-11-21

Every Fixed Threshold

Fixed thresholds at Longwood
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	71	49	1992	35
25 mm (0.98 in): Days with 25 mm or more rain	71	15	1981	6
50 mm (1.97 in): Days with 50 mm or more rain	38	4	1973	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1969	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

Data for Longwood 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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

Longwood Threshold Days by Year (ASN00023727)

Key Facts for Longwood Thresholds

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

Every Fixed Threshold

Download the Data

Related