Marcus Hook Threshold Days by Year (USC00365390)

18 fixed thresholds counted per year at Marcus Hook (USC00365390): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Marcus Hook Thresholds

Marcus Hook: nights with a minimum temperature at or below 0 C (32 F) in 77 years, most in 1960 with 102.
Marcus Hook: nights with a minimum temperature at or above 20 C (68 F) in 77 years, most in 2005 with 85.
Marcus Hook: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1953 with 49.
Marcus Hook: days with 25 mm (0.98 in) or more of precipitation in 73 years, most in 1972 with 19.
18 fixed thresholds have at least one qualifying day at Marcus Hook.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Marcus Hook with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 93 in 2010.

Days at or above 30 C (86 F) per year at Marcus Hook
Year	Days	Decade average
1920	60	53.5
1921	51	53.5
1922	51	53.5
1923	52	53.5
1932	90	90
1941	81	72.9
1942	68	72.9
1943	85	72.9
1944	83	72.9
1945	74	72.9
1946	68	72.9
1947	70	72.9
1948	65	72.9
1949	62	72.9
1950	33	54.2
1951	51	54.2
1952	62	54.2
1953	56	54.2
1954	44	54.2
1955	61	54.2
1956	43	54.2
1957	75	54.2
1958	48	54.2
1959	69	54.2
1960	39	44.4
1961	52	44.4
1962	48	44.4
1963	53	44.4
1964	52	44.4
1965	55	44.4
1967	30	44.4
1968	37	44.4
1969	34	44.4
1970	39	58.7
1971	37	58.7
1972	50	58.7
1973	72	58.7
1974	60	58.7
1975	60	58.7
1976	72	58.7
1977	76	58.7
1978	62	58.7
1979	59	58.7
1980	87	63.8
1981	68	63.8
1982	50	63.8
1983	85	63.8
1984	54	63.8
1985	62	63.8
1986	60	63.8
1987	68	63.8
1989	40	63.8
1990	52	48.7
1994	50	48.7
1996	31	48.7
1997	45	48.7
1998	61	48.7
1999	53	48.7
2000	42	57.7
2002	65	57.7
2005	69	57.7
2006	54	57.7
2008	59	57.7
2009	57	57.7
2010	93	77.3
2011	67	77.3
2012	72	77.3

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

First to last qualifying date each year at Marcus Hook
Year	First date	Last date
1920	1920-05-29	1920-10-23
1921	1921-05-22	1921-09-30
1922	1922-04-10	1922-10-05
1923	1923-06-02	1923-09-04
1932	1932-04-22	1932-09-24
1941	1941-04-13	1941-10-07
1942	1942-04-30	1942-09-20
1943	1943-05-07	1943-09-16
1944	1944-05-01	1944-10-07
1945	1945-03-17	1945-09-29
1946	1946-04-22	1946-10-31
1947	1947-05-20	1947-10-23
1948	1948-05-12	1948-09-21
1949	1949-05-08	1949-09-20
1950	1950-06-07	1950-11-01
1951	1951-05-02	1951-10-06
1952	1952-04-20	1952-09-30
1953	1953-05-11	1953-09-30
1954	1954-06-01	1954-09-08
1955	1955-05-05	1955-09-20
1956	1956-05-13	1956-09-17
1957	1957-04-21	1957-09-22
1958	1958-06-01	1958-09-26
1959	1959-05-07	1959-10-06
1960	1960-04-15	1960-09-09
1961	1961-06-02	1961-09-25
1962	1962-04-26	1962-09-14
1963	1963-04-03	1963-09-12
1964	1964-05-08	1964-09-23
1965	1965-05-04	1965-09-23
1967	1967-06-10	1967-10-05
1968	1968-06-06	1968-08-25
1969	1969-05-29	1969-09-17
1970	1970-05-09	1970-09-26
1971	1971-06-04	1971-09-16
1972	1972-05-24	1972-09-26
1973	1973-05-30	1973-09-07
1974	1974-04-29	1974-09-13
1975	1975-05-20	1975-08-28
1976	1976-04-16	1976-09-14
1977	1977-04-12	1977-09-19
1978	1978-05-20	1978-09-18
1979	1979-05-08	1979-09-07
1980	1980-05-05	1980-09-23
1981	1981-05-22	1981-09-14
1982	1982-05-30	1982-09-12
1983	1983-05-03	1983-09-20
1984	1984-05-22	1984-09-24
1985	1985-04-19	1985-09-10
1986	1986-05-06	1986-09-25
1987	1987-05-10	1987-09-11
1989	1989-05-19	1989-09-11
1990	1990-04-27	1990-09-11
1994	1994-04-25	1994-09-14
1996	1996-05-19	1996-09-09
1997	1997-05-19	1997-10-06
1998	1998-05-15	1998-09-27
1999	1999-05-29	1999-09-08
2000	2000-05-05	2000-09-10
2002	2002-04-16	2002-10-03
2005	2005-04-20	2005-09-23
2006	2006-05-28	2006-08-25
2008	2008-04-18	2008-09-15
2009	2009-04-25	2009-08-30
2010	2010-04-07	2010-09-25
2011	2011-04-25	2011-09-14
2012	2012-04-16	2012-09-08

Every Fixed Threshold

Fixed thresholds at Marcus Hook
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	93	2010	72
35 C (95 F): Days	59	33	1944	18
40 C (104 F): Days	4	3	1948	1
90 F (32.2 C): Days	67	69	2010	47
100 F (37.8 C): Days	33	8	1949	5
0 C (32 F): Ice days (max	67	29	1977	1
0 C (32 F): Frost days (min	77	102	1960	40
-10 C (14 F): Days with min	67	21	1963	4
-20 C (-4 F): Days with min	2	1	1994	1
20 C (68 F): Tropical nights (min	77	85	2005	82
25 C (77 F): Days with min	59	18	1946	8
10 mm (0.39 in): Days with 10 mm or more rain	73	49	1953	26
25 mm (0.98 in): Days with 25 mm or more rain	73	19	1972	8
50 mm (1.97 in): Days with 50 mm or more rain	61	7	1971	2
100 mm (3.94 in): Days with 100 mm or more rain	15	2	1971	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1971	1
10 cm (3.9 in): Days with 10 cm or more snowfall	38	5	1978	1
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1967	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

Data for Marcus Hook 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).

Marcus Hook Threshold Days by Year (USC00365390)

Key Facts for Marcus Hook Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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