New London Lock #22 Threshold Days by Year

7 fixed thresholds counted per year at New London Lock #22 (USC00305751): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for New London Lock #22 Thresholds

New London Lock #22: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1972 with 52.
New London Lock #22: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 2005 with 17.
New London Lock #22: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1940 with 3.
New London Lock #22: days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1950 with 20.
7 fixed thresholds have at least one qualifying day at New London Lock #22.

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

71 years with a qualifying day

Days per year at New London Lock #22 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1972.

Days with 10 mm (0.39 in) or more of precipitation per year at New London Lock #22
Year	Days	Decade average
1932	40	31.9
1933	25	31.9
1934	27	31.9
1935	40	31.9
1936	32	31.9
1937	35	31.9
1938	27	31.9
1939	29	31.9
1940	32	36.7
1941	26	36.7
1942	38	36.7
1943	43	36.7
1944	39	36.7
1945	42	36.7
1946	36	36.7
1947	44	36.7
1948	32	36.7
1949	35	36.7
1950	40	33.2
1951	37	33.2
1952	30	33.2
1953	28	33.2
1954	43	33.2
1955	33	33.2
1956	28	33.2
1957	26	33.2
1958	34	33.2
1959	33	33.2
1960	27	30.6
1961	28	30.6
1962	28	30.6
1963	24	30.6
1964	31	30.6
1965	34	30.6
1966	30	30.6
1967	31	30.6
1968	45	30.6
1969	28	30.6
1970	38	39.3
1971	38	39.3
1972	52	39.3
1973	43	39.3
1974	36	39.3
1975	40	39.3
1976	42	39.3
1978	26	39.3
1979	39	39.3
1980	29	33.6
1981	34	33.6
1982	32	33.6
1983	34	33.6
1984	38	33.6
1985	33	33.6
1986	43	33.6
1987	31	33.6
1988	29	33.6
1989	33	33.6
1990	44	31.6
1991	27	31.6
1992	34	31.6
1994	34	31.6
1995	27	31.6
1998	26	31.6
1999	29	31.6
2001	33	39.3
2003	41	39.3
2004	43	39.3
2005	45	39.3
2006	43	39.3
2008	38	39.3
2009	32	39.3

For each year, a bar from the first to the last day at New London Lock #22 meeting 10 mm (0.39 in).

First to last qualifying date each year at New London Lock #22
Year	First date	Last date
1932	1932-01-07	1932-12-31
1933	1933-01-19	1933-12-04
1934	1934-01-01	1934-12-29
1935	1935-01-01	1935-12-16
1936	1936-01-03	1936-12-21
1937	1937-01-08	1937-12-18
1938	1938-01-02	1938-12-10
1939	1939-01-31	1939-12-21
1940	1940-02-11	1940-12-30
1941	1941-02-08	1941-12-27
1942	1942-02-02	1942-12-31
1943	1943-01-04	1943-12-27
1944	1944-01-06	1944-12-28
1945	1945-01-02	1945-11-30
1946	1946-01-10	1946-12-28
1947	1947-01-03	1947-12-06
1948	1948-01-02	1948-12-29
1949	1949-01-06	1949-12-21
1950	1950-01-07	1950-12-16
1951	1951-01-15	1951-12-31
1952	1952-01-18	1952-12-12
1953	1953-01-12	1953-12-10
1954	1954-01-04	1954-12-30
1955	1955-02-07	1955-12-24
1956	1956-02-07	1956-12-16
1957	1957-01-23	1957-12-27
1958	1958-01-15	1958-12-06
1959	1959-01-02	1959-12-29
1960	1960-01-16	1960-12-16
1961	1961-01-01	1961-12-05
1962	1962-01-07	1962-12-06
1963	1963-01-27	1963-12-09
1964	1964-01-10	1964-12-28
1965	1965-01-09	1965-11-28
1966	1966-01-24	1966-12-28
1967	1967-01-28	1967-12-11
1968	1968-01-30	1968-12-23
1969	1969-01-11	1969-12-27
1970	1970-03-05	1970-12-24
1971	1971-01-05	1971-12-26
1972	1972-01-02	1972-12-28
1973	1973-01-04	1973-12-27
1974	1974-01-22	1974-12-17
1975	1975-01-26	1975-12-31
1976	1976-01-27	1976-11-29
1978	1978-01-09	1978-12-21
1979	1979-01-02	1979-12-26
1980	1980-01-15	1980-11-25
1981	1981-01-07	1981-12-23
1982	1982-01-04	1982-12-28
1983	1983-01-23	1983-12-22
1984	1984-01-25	1984-12-31
1985	1985-01-02	1985-12-23
1986	1986-01-21	1986-12-08
1987	1987-01-23	1987-11-30
1988	1988-01-18	1988-12-27
1989	1989-02-14	1989-11-20
1990	1990-01-02	1990-12-31
1991	1991-01-14	1991-12-03
1992	1992-01-15	1992-11-25
1994	1994-01-05	1994-12-12
1995	1995-02-16	1995-12-20
1998	1998-01-05	1998-11-27
1999	1999-01-04	1999-11-26
2001	2001-01-02	2001-12-18
2003	2003-01-02	2003-12-17
2004	2004-01-06	2004-11-29
2005	2005-01-03	2005-12-27
2006	2006-01-03	2006-12-04
2008	2008-01-02	2008-12-22
2009	2009-02-12	2009-11-30

Every Fixed Threshold

Fixed thresholds at New London Lock #22
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	52	1972	32
25 mm (0.98 in): Days with 25 mm or more rain	70	17	2005	5
50 mm (1.97 in): Days with 50 mm or more rain	47	3	1940	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	20	1950	8
25 cm (9.8 in): Days with 25 cm or more snowfall	6	3	1948	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	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 1932.

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Data for New London Lock #22 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

New London Lock #22 Threshold Days by Year

Key Facts for New London Lock #22 Thresholds

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

Every Fixed Threshold

Download the Data

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