Concord 4 SSW Threshold Days by Year (USC00441955)

7 fixed thresholds counted per year at Concord 4 SSW (USC00441955): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Concord 4 SSW Thresholds

Concord 4 SSW: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 2020 with 53.
Concord 4 SSW: days with 25 mm (0.98 in) or more of precipitation in 74 years, most in 1983 with 21.
Concord 4 SSW: days with 50 mm (1.97 in) or more of precipitation in 62 years, most in 2020 with 9.
Concord 4 SSW: days with 10 cm (3.9 in) or more of snowfall in 45 years, most in 1962 with 7.
7 fixed thresholds have at least one qualifying day at Concord 4 SSW.

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

74 years with a qualifying day

Days per year at Concord 4 SSW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 2020.

Days with 10 mm (0.39 in) or more of precipitation per year at Concord 4 SSW
Year	Days	Decade average
1951	29	34.8
1952	42	34.8
1953	37	34.8
1954	35	34.8
1955	26	34.8
1956	27	34.8
1957	46	34.8
1958	37	34.8
1959	34	34.8
1960	33	30.5
1961	39	30.5
1962	38	30.5
1963	24	30.5
1964	31	30.5
1965	24	30.5
1966	33	30.5
1967	31	30.5
1968	23	30.5
1969	29	30.5
1970	31	39
1971	36	39
1972	50	39
1973	44	39
1974	40	39
1975	41	39
1976	36	39
1977	33	39
1978	35	39
1979	44	39
1980	32	34.2
1981	30	34.2
1982	37	34.2
1983	42	34.2
1984	34	34.2
1985	37	34.2
1986	19	34.2
1987	33	34.2
1988	27	34.2
1989	51	34.2
1990	42	39.3
1991	29	39.3
1992	45	39.3
1993	41	39.3
1994	34	39.3
1995	46	39.3
1996	51	39.3
1997	37	39.3
1998	36	39.3
1999	32	39.3
2000	35	36.4
2001	31	36.4
2002	39	36.4
2003	49	36.4
2006	30	36.4
2007	30	36.4
2008	36	36.4
2009	41	36.4
2010	40	39.1
2011	39	39.1
2012	27	39.1
2013	40	39.1
2014	37	39.1
2015	38	39.1
2016	44	39.1
2017	28	39.1
2018	50	39.1
2019	48	39.1
2020	53	36
2021	29	36
2022	33	36
2023	41	36
2024	39	36
2025	37	36
2026	20	36

For each year, a bar from the first to the last day at Concord 4 SSW meeting 10 mm (0.39 in).

First to last qualifying date each year at Concord 4 SSW
Year	First date	Last date
1951	1951-02-08	1951-12-21
1952	1952-01-05	1952-12-31
1953	1953-01-09	1953-12-14
1954	1954-01-11	1954-12-29
1955	1955-02-06	1955-11-11
1956	1956-02-03	1956-12-23
1957	1957-01-23	1957-12-26
1958	1958-01-14	1958-12-30
1959	1959-01-02	1959-12-19
1960	1960-01-03	1960-12-12
1961	1961-01-01	1961-12-18
1962	1962-01-02	1962-12-30
1963	1963-01-20	1963-12-24
1964	1964-01-01	1964-12-28
1965	1965-01-17	1965-10-08
1966	1966-01-06	1966-12-29
1967	1967-01-05	1967-12-29
1968	1968-01-14	1968-12-23
1969	1969-01-21	1969-12-31
1970	1970-01-18	1970-12-22
1971	1971-01-01	1971-12-20
1972	1972-01-14	1972-12-31
1973	1973-01-04	1973-12-21
1974	1974-01-01	1974-12-16
1975	1975-01-11	1975-12-26
1976	1976-01-01	1976-12-26
1977	1977-01-10	1977-12-18
1978	1978-01-08	1978-12-25
1979	1979-01-02	1979-12-14
1980	1980-01-05	1980-11-25
1981	1981-02-02	1981-12-26
1982	1982-01-01	1982-12-16
1983	1983-01-23	1983-12-29
1984	1984-01-09	1984-12-31
1985	1985-01-03	1985-12-13
1986	1986-02-07	1986-12-25
1987	1987-01-02	1987-12-15
1988	1988-01-08	1988-11-28
1989	1989-01-12	1989-12-13
1990	1990-01-01	1990-12-28
1991	1991-01-08	1991-12-29
1992	1992-01-03	1992-12-28
1993	1993-01-05	1993-12-29
1994	1994-01-04	1994-10-23
1995	1995-01-06	1995-12-19
1996	1996-01-03	1996-12-13
1997	1997-01-09	1997-12-30
1998	1998-01-08	1998-12-24
1999	1999-01-03	1999-12-14
2000	2000-01-05	2000-12-17
2001	2001-01-19	2001-12-18
2002	2002-01-07	2002-12-25
2003	2003-02-04	2003-12-14
2006	2006-01-03	2006-12-26
2007	2007-01-01	2007-12-31
2008	2008-01-11	2008-12-12
2009	2009-01-07	2009-12-26
2010	2010-01-18	2010-12-01
2011	2011-01-27	2011-12-28
2012	2012-01-12	2012-12-25
2013	2013-01-15	2013-12-29
2014	2014-01-06	2014-12-29
2015	2015-01-12	2015-12-29
2016	2016-01-10	2016-12-25
2017	2017-01-03	2017-10-30
2018	2018-01-13	2018-12-29
2019	2019-01-13	2019-12-30
2020	2020-01-12	2020-12-25
2021	2021-01-02	2021-12-12
2022	2022-01-02	2022-12-23
2023	2023-01-01	2023-12-27
2024	2024-01-07	2024-12-29
2025	2025-01-06	2025-12-19
2026	2026-01-10	2026-10-04

Every Fixed Threshold

Fixed thresholds at Concord 4 SSW
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	74	53	2020	20
25 mm (0.98 in): Days with 25 mm or more rain	74	21	1983	4
50 mm (1.97 in): Days with 50 mm or more rain	62	9	2020	1
100 mm (3.94 in): Days with 100 mm or more rain	9	2	2020	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1987	1
10 cm (3.9 in): Days with 10 cm or more snowfall	45	7	1962	1
25 cm (9.8 in): Days with 25 cm or more snowfall	13	3	1987	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

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Data for Concord 4 SSW 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Concord 4 SSW Threshold Days by Year (USC00441955)

Key Facts for Concord 4 SSW Thresholds

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

Every Fixed Threshold

Download the Data

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