Lancaster 4 WSW Threshold Days by Year (USC00474546)

18 fixed thresholds counted per year at Lancaster 4 WSW (USC00474546): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lancaster 4 WSW Thresholds

Lancaster 4 WSW: days with a maximum temperature at or above 30 C (86 F) in 118 years, most in 1931 with 75.
Lancaster 4 WSW: days with a maximum temperature at or below 0 C (32 F) in 118 years, most in 2014 with 91.
Lancaster 4 WSW: nights with a minimum temperature at or below 0 C (32 F) in 116 years, most in 1976 with 174.
Lancaster 4 WSW: nights with a minimum temperature at or below -10 C (14 F) in 116 years, most in 1893 with 90.
18 fixed thresholds have at least one qualifying day at Lancaster 4 WSW.

Days at or above 30 C (86 F)

118 years with a qualifying day

Days per year at Lancaster 4 WSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 75 in 1931.

Days at or above 30 C (86 F) per year at Lancaster 4 WSW
Year	Days	Decade average
1893	34	44.4
1894	59	44.4
1895	56	44.4
1896	39	44.4
1897	42	44.4
1898	44	44.4
1899	37	44.4
1900	36	26
1901	64	26
1902	16	26
1903	10	26
1904	14	26
1905	22	26
1907	20	26
1910	49	38.7
1911	42	38.7
1912	25	38.7
1922	25	26
1923	37	26
1924	9	26
1925	35	26
1926	23	26
1929	27	26
1930	58	51.9
1931	75	51.9
1933	41	51.9
1934	56	51.9
1935	35	51.9
1936	67	51.9
1937	56	51.9
1938	30	51.9
1939	49	51.9
1940	32	39.1
1941	42	39.1
1942	27	39.1
1943	43	39.1
1944	41	39.1
1945	28	39.1
1946	28	39.1
1947	56	39.1
1948	47	39.1
1949	47	39.1
1950	18	33.5
1951	11	33.5
1952	49	33.5
1953	40	33.5
1954	41	33.5
1955	62	33.5
1956	32	33.5
1957	26	33.5
1958	15	33.5
1959	41	33.5
1960	25	28.2
1961	31	28.2
1962	24	28.2
1963	43	28.2
1964	42	28.2
1965	20	28.2
1966	33	28.2
1967	18	28.2
1968	29	28.2
1969	17	28.2
1970	30	24.8
1971	27	24.8
1972	28	24.8
1973	17	24.8
1975	34	24.8
1976	38	24.8
1977	20	24.8
1978	19	24.8
1979	10	24.8
1980	27	28.2
1981	13	28.2
1982	11	28.2
1983	48	28.2
1984	25	28.2
1985	23	28.2
1986	14	28.2
1987	33	28.2
1988	64	28.2
1989	24	28.2
1990	15	13.9
1991	27	13.9
1992	7	13.9
1993	3	13.9
1994	11	13.9
1995	28	13.9
1996	9	13.9
1997	10	13.9
1998	12	13.9
1999	17	13.9
2000	6	11.4
2001	18	11.4
2002	20	11.4
2003	19	11.4
2004	1	11.4
2005	23	11.4
2006	13	11.4
2007	9	11.4
2008	2	11.4
2009	3	11.4
2010	21	20.1
2011	25	20.1
2012	53	20.1
2013	23	20.1
2014	5	20.1
2015	14	20.1
2016	16	20.1
2017	16	20.1
2018	18	20.1
2019	10	20.1
2020	24	19.3
2021	26	19.3
2022	16	19.3
2023	24	19.3
2024	15	19.3
2025	17	19.3
2026	13	19.3

For each year, a bar from the first to the last day at Lancaster 4 WSW meeting 30 C (86 F).

First to last qualifying date each year at Lancaster 4 WSW
Year	First date	Last date
1893	1893-06-13	1893-09-14
1894	1894-05-14	1894-09-05
1895	1895-04-30	1895-09-21
1896	1896-05-06	1896-09-09
1897	1897-06-13	1897-10-01
1898	1898-06-03	1898-09-29
1899	1899-06-03	1899-09-16
1900	1900-05-13	1900-10-03
1901	1901-04-29	1901-09-06
1902	1902-05-18	1902-08-02
1903	1903-06-28	1903-08-24
1904	1904-06-23	1904-09-28
1905	1905-06-04	1905-09-29
1907	1907-06-16	1907-09-01
1910	1910-04-29	1910-08-24
1911	1911-05-10	1911-09-16
1912	1912-06-25	1912-09-08
1922	1922-05-10	1922-09-08
1923	1923-06-01	1923-09-05
1924	1924-06-19	1924-08-30
1925	1925-04-22	1925-09-19
1926	1926-05-29	1926-09-17
1929	1929-05-29	1929-09-24
1930	1930-04-09	1930-10-11
1931	1931-06-04	1931-09-21
1933	1933-06-03	1933-09-08
1934	1934-05-05	1934-08-18
1935	1935-06-13	1935-09-24
1936	1936-05-06	1936-09-20
1937	1937-05-30	1937-09-24
1938	1938-06-21	1938-09-10
1939	1939-04-24	1939-09-28
1940	1940-06-03	1940-09-21
1941	1941-05-15	1941-09-22
1942	1942-05-29	1942-09-16
1943	1943-05-29	1943-08-31
1944	1944-05-15	1944-09-03
1945	1945-06-23	1945-09-07
1946	1946-06-06	1946-08-16
1947	1947-06-09	1947-10-14
1948	1948-05-20	1948-09-19
1949	1949-05-03	1949-08-26
1950	1950-05-24	1950-10-17
1951	1951-07-07	1951-08-28
1952	1952-04-28	1952-09-28
1953	1953-05-25	1953-10-02
1954	1954-06-10	1954-09-27
1955	1955-05-03	1955-09-18
1956	1956-05-21	1956-08-29
1957	1957-06-16	1957-09-01
1958	1958-06-30	1958-09-03
1959	1959-05-02	1959-09-08
1960	1960-07-19	1960-09-08
1961	1961-06-10	1961-09-10
1962	1962-05-15	1962-09-12
1963	1963-05-08	1963-10-06
1964	1964-05-18	1964-09-09
1965	1965-05-25	1965-08-17
1966	1966-05-26	1966-09-03
1967	1967-05-18	1967-08-16
1968	1968-06-04	1968-08-23
1969	1969-05-28	1969-08-31
1970	1970-05-21	1970-09-07
1971	1971-06-04	1971-09-08
1972	1972-05-19	1972-08-29
1973	1973-06-08	1973-09-01
1975	1975-05-19	1975-10-13
1976	1976-06-08	1976-10-02
1977	1977-05-25	1977-08-27
1978	1978-05-26	1978-09-11
1979	1979-06-06	1979-08-30
1980	1980-04-22	1980-09-09
1981	1981-06-05	1981-07-19
1982	1982-07-04	1982-08-07
1983	1983-06-21	1983-09-10
1984	1984-07-05	1984-09-25
1985	1985-05-27	1985-09-19
1986	1986-06-01	1986-07-30
1987	1987-04-21	1987-08-17
1988	1988-05-22	1988-09-18
1989	1989-06-21	1989-08-23
1990	1990-06-13	1990-09-07
1991	1991-05-28	1991-08-31
1992	1992-06-13	1992-08-10
1993	1993-08-23	1993-08-27
1994	1994-05-24	1994-09-16
1995	1995-06-18	1995-08-31
1996	1996-05-19	1996-08-08
1997	1997-06-21	1997-10-05
1998	1998-05-29	1998-09-14
1999	1999-06-09	1999-09-05
2000	2000-06-02	2000-09-03
2001	2001-05-16	2001-08-10
2002	2002-06-02	2002-09-10
2003	2003-06-25	2003-09-09
2004	2004-07-21	2004-07-21
2005	2005-06-07	2005-09-12
2006	2006-05-29	2006-08-03
2007	2007-06-15	2007-09-05
2008	2008-06-08	2008-09-03
2009	2009-06-23	2009-06-26
2010	2010-05-24	2010-10-10
2011	2011-05-11	2011-09-02
2012	2012-05-16	2012-09-05
2013	2013-05-15	2013-09-20
2014	2014-05-31	2014-08-25
2015	2015-06-10	2015-09-08
2016	2016-06-05	2016-09-07
2017	2017-06-04	2017-09-26
2018	2018-05-27	2018-09-18
2019	2019-06-30	2019-07-21
2020	2020-06-03	2020-08-29
2021	2021-05-02	2021-09-20
2022	2022-05-11	2022-09-21
2023	2023-06-01	2023-09-05
2024	2024-06-13	2024-09-16
2025	2025-05-16	2025-10-04
2026	2026-05-28	2026-09-03

Every Fixed Threshold

Fixed thresholds at Lancaster 4 WSW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	118	75	1931	13
35 C (95 F): Days	57	28	1901	1
40 C (104 F): Days	3	4	1936	4
90 F (32.2 C): Days	113	51	1936	3
100 F (37.8 C): Days	13	11	1901	1
0 C (32 F): Ice days (max	118	91	2014	39
0 C (32 F): Frost days (min	116	174	1976	86
-10 C (14 F): Days with min	116	90	1893	32
-20 C (-4 F): Days with min	116	38	1893	9
-30 C (-22 F): Days with min	40	7	1899	1
20 C (68 F): Tropical nights (min	115	28	1955	20
25 C (77 F): Days with min	12	7	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	109	46	1938	32
25 mm (0.98 in): Days with 25 mm or more rain	109	20	2018	16
50 mm (1.97 in): Days with 50 mm or more rain	90	8	2018	4
100 mm (3.94 in): Days with 100 mm or more rain	14	2	2019	2
10 cm (3.9 in): Days with 10 cm or more snowfall	88	8	1923	1
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1923	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Lancaster 4 WSW 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Lancaster 4 WSW Threshold Days by Year (USC00474546)

Key Facts for Lancaster 4 WSW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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