Coatesville 1 SW Threshold Days by Year (USC00361589)

18 fixed thresholds counted per year at Coatesville 1 SW (USC00361589): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Coatesville 1 SW Thresholds

Coatesville 1 SW: days with a maximum temperature at or above 30 C (86 F) in 89 years, most in 1900 with 83.
Coatesville 1 SW: days with a maximum temperature at or above 90 F (32.2 C) in 89 years, most in 1900 with 63.
Coatesville 1 SW: days with a maximum temperature at or below 0 C (32 F) in 89 years, most in 1904 with 43.
Coatesville 1 SW: nights with a minimum temperature at or below 0 C (32 F) in 89 years, most in 1904 with 157.
18 fixed thresholds have at least one qualifying day at Coatesville 1 SW.

Days at or above 30 C (86 F)

89 years with a qualifying day

Days per year at Coatesville 1 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 83 in 1900.

Days at or above 30 C (86 F) per year at Coatesville 1 SW
Year	Days	Decade average
1894	52	58.3
1895	59	58.3
1896	51	58.3
1897	58	58.3
1898	72	58.3
1899	58	58.3
1900	83	51.6
1901	62	51.6
1902	43	51.6
1903	36	51.6
1904	45	51.6
1905	39	51.6
1906	58	51.6
1907	38	51.6
1908	64	51.6
1909	48	51.6
1910	45	46.2
1911	59	46.2
1912	39	46.2
1913	57	46.2
1914	49	46.2
1915	37	46.2
1916	43	46.2
1917	41	46.2
1918	47	46.2
1919	45	46.2
1920	33	39.2
1921	68	39.2
1922	45	39.2
1923	40	39.2
1924	27	39.2
1925	44	39.2
1926	28	39.2
1927	21	39.2
1928	39	39.2
1929	47	39.2
1930	59	51.4
1931	56	51.4
1932	58	51.4
1933	53	51.4
1934	57	51.4
1935	51	51.4
1936	22	51.4
1937	50	51.4
1938	56	51.4
1939	52	51.4
1940	41	52.8
1941	67	52.8
1942	54	52.8
1943	76	52.8
1944	75	52.8
1945	57	52.8
1946	32	52.8
1947	43	52.8
1948	33	52.8
1949	50	52.8
1950	27	52.1
1951	48	52.1
1952	55	52.1
1953	61	52.1
1954	52	52.1
1955	54	52.1
1956	42	52.1
1957	67	52.1
1958	40	52.1
1959	75	52.1
1960	50	50.1
1961	57	50.1
1962	52	50.1
1963	43	50.1
1964	55	50.1
1965	54	50.1
1966	61	50.1
1967	38	50.1
1968	51	50.1
1969	40	50.1
1970	44	33.5
1971	32	33.5
1972	35	33.5
1973	43	33.5
1974	28	33.5
1975	24	33.5
1976	34	33.5
1977	38	33.5
1978	32	33.5
1979	25	33.5
1980	62	42.3
1981	32	42.3
1982	33	42.3

For each year, a bar from the first to the last day at Coatesville 1 SW meeting 30 C (86 F).

First to last qualifying date each year at Coatesville 1 SW
Year	First date	Last date
1894	1894-05-02	1894-09-16
1895	1895-04-25	1895-09-26
1896	1896-04-16	1896-09-19
1897	1897-04-24	1897-10-16
1898	1898-05-20	1898-10-04
1899	1899-05-01	1899-09-08
1900	1900-05-13	1900-10-06
1901	1901-04-30	1901-09-24
1902	1902-04-22	1902-09-08
1903	1903-04-29	1903-09-16
1904	1904-05-13	1904-10-11
1905	1905-05-04	1905-10-09
1906	1906-05-17	1906-09-21
1907	1907-03-29	1907-09-21
1908	1908-04-26	1908-10-18
1909	1909-05-06	1909-09-04
1910	1910-03-30	1910-10-01
1911	1911-05-11	1911-09-25
1912	1912-05-21	1912-09-11
1913	1913-05-02	1913-09-08
1914	1914-05-11	1914-09-23
1915	1915-04-20	1915-09-17
1916	1916-05-28	1916-10-09
1917	1917-05-20	1917-09-02
1918	1918-05-06	1918-08-31
1919	1919-05-05	1919-10-10
1920	1920-06-02	1920-08-31
1921	1921-04-25	1921-09-29
1922	1922-04-09	1922-10-05
1923	1923-06-02	1923-08-21
1924	1924-06-19	1924-09-02
1925	1925-05-23	1925-09-13
1926	1926-05-02	1926-09-25
1927	1927-04-20	1927-10-02
1928	1928-05-04	1928-09-13
1929	1929-04-07	1929-09-10
1930	1930-05-05	1930-09-26
1931	1931-05-28	1931-09-23
1932	1932-05-16	1932-09-23
1933	1933-05-20	1933-09-27
1934	1934-05-05	1934-09-10
1935	1935-05-27	1935-09-21
1936	1936-05-12	1936-08-25
1937	1937-06-01	1937-09-04
1938	1938-04-20	1938-10-17
1939	1939-04-25	1939-10-10
1940	1940-05-14	1940-09-21
1941	1941-04-14	1941-10-07
1942	1942-04-06	1942-09-17
1943	1943-05-07	1943-09-16
1944	1944-05-04	1944-09-05
1945	1945-03-17	1945-09-29
1946	1946-05-25	1946-10-06
1947	1947-05-13	1947-09-19
1948	1948-05-11	1948-09-19
1949	1949-05-06	1949-10-11
1950	1950-06-08	1950-09-02
1951	1951-05-16	1951-10-06
1952	1952-06-05	1952-09-15
1953	1953-05-11	1953-10-01
1954	1954-05-03	1954-10-14
1955	1955-05-06	1955-08-28
1956	1956-05-14	1956-09-24
1957	1957-04-22	1957-09-23
1958	1958-06-01	1958-09-27
1959	1959-05-08	1959-10-07
1960	1960-04-15	1960-09-10
1961	1961-05-10	1961-09-25
1962	1962-04-27	1962-10-13
1963	1963-04-04	1963-09-13
1964	1964-05-09	1964-09-24
1965	1965-05-04	1965-09-24
1966	1966-05-07	1966-09-04
1967	1967-04-03	1967-10-06
1968	1968-06-07	1968-09-26
1969	1969-04-28	1969-09-18
1970	1970-05-10	1970-09-27
1971	1971-05-20	1971-09-10
1972	1972-04-20	1972-09-18
1973	1973-06-05	1973-09-06
1974	1974-04-30	1974-09-14
1975	1975-05-22	1975-08-27
1976	1976-04-18	1976-09-15
1977	1977-04-13	1977-09-07
1978	1978-05-21	1978-09-19
1979	1979-05-10	1979-09-05
1980	1980-05-06	1980-09-23
1981	1981-05-26	1981-09-15
1982	1982-06-27	1982-09-13

Every Fixed Threshold

Fixed thresholds at Coatesville 1 SW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	89	83	1900	33
35 C (95 F): Days	74	21	1900	6
40 C (104 F): Days	2	2	1918	1
90 F (32.2 C): Days	89	63	1900	8
100 F (37.8 C): Days	17	9	1900	3
0 C (32 F): Ice days (max	89	43	1904	18
0 C (32 F): Frost days (min	89	157	1904	116
-10 C (14 F): Days with min	89	49	1977	26
-20 C (-4 F): Days with min	24	6	1979	2
20 C (68 F): Tropical nights (min	89	52	1943	7
25 C (77 F): Days with min	9	2	1918	1
10 mm (0.39 in): Days with 10 mm or more rain	89	53	1948	33
25 mm (0.98 in): Days with 25 mm or more rain	89	21	1971	15
50 mm (1.97 in): Days with 50 mm or more rain	76	8	1979	1
100 mm (3.94 in): Days with 100 mm or more rain	9	2	1979	2
10 cm (3.9 in): Days with 10 cm or more snowfall	49	6	1978	1
25 cm (9.8 in): Days with 25 cm or more snowfall	10	2	1958	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 1894.

Download the Data

Data for Coatesville 1 SW 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).

Coatesville 1 SW Threshold Days by Year (USC00361589)

Key Facts for Coatesville 1 SW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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