Philadelphia Drexel Un Threshold Days by Year (USC00366879)

17 fixed thresholds counted per year at Philadelphia Drexel Un (USC00366879): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Philadelphia Drexel Un Thresholds

Philadelphia Drexel Un: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1980 with 82.
Philadelphia Drexel Un: days with a maximum temperature at or above 90 F (32.2 C) in 35 years, most in 1959 with 45.
Philadelphia Drexel Un: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 1977 with 31.
Philadelphia Drexel Un: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1960 with 104.
17 fixed thresholds have at least one qualifying day at Philadelphia Drexel Un.

Days at or above 30 C (86 F)

35 years with a qualifying day

Days per year at Philadelphia Drexel Un with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 1980.

Days at or above 30 C (86 F) per year at Philadelphia Drexel Un
Year	Days	Decade average
1949	50	50
1950	34	56.4
1951	51	56.4
1952	55	56.4
1953	55	56.4
1954	48	56.4
1955	61	56.4
1956	54	56.4
1957	80	56.4
1958	51	56.4
1959	75	56.4
1960	48	51.7
1961	48	51.7
1962	46	51.7
1963	47	51.7
1964	57	51.7
1965	46	51.7
1966	64	51.7
1967	47	51.7
1968	57	51.7
1969	57	51.7
1970	60	52.9
1971	63	52.9
1972	39	52.9
1974	45	52.9
1975	51	52.9
1976	58	52.9
1977	59	52.9
1978	58	52.9
1979	43	52.9
1980	82	57.6
1981	51	57.6
1982	48	57.6
1983	68	57.6
1984	39	57.6

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

First to last qualifying date each year at Philadelphia Drexel Un
Year	First date	Last date
1949	1949-05-06	1949-09-05
1950	1950-06-06	1950-09-01
1951	1951-05-15	1951-10-05
1952	1952-06-04	1952-09-13
1953	1953-05-11	1953-09-30
1954	1954-06-01	1954-10-13
1955	1955-05-05	1955-09-20
1956	1956-05-13	1956-09-23
1957	1957-04-21	1957-09-22
1958	1958-05-31	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	1962-10-12
1963	1963-04-03	1963-09-20
1964	1964-04-18	1964-09-23
1965	1965-05-03	1965-09-23
1966	1966-06-04	1966-09-11
1967	1967-06-02	1967-10-05
1968	1968-06-06	1968-10-02
1969	1969-04-27	1969-09-17
1970	1970-05-09	1970-09-26
1971	1971-05-20	1971-09-16
1972	1972-06-04	1972-09-26
1974	1974-04-29	1974-09-13
1975	1975-05-20	1975-10-15
1976	1976-04-17	1976-09-14
1977	1977-04-12	1977-09-19
1978	1978-05-20	1978-09-18
1979	1979-05-09	1979-09-07
1980	1980-05-05	1980-09-23
1981	1981-05-22	1981-09-14
1982	1982-05-16	1982-09-13
1983	1983-04-28	1983-09-20
1984	1984-05-22	1984-09-24

Every Fixed Threshold

Fixed thresholds at Philadelphia Drexel Un
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	35	82	1980	39
35 C (95 F): Days	32	19	1955	2
40 C (104 F): Days	2	2	1966	2
90 F (32.2 C): Days	35	45	1959	18
100 F (37.8 C): Days	13	6	1953	2
0 C (32 F): Ice days (max	35	31	1977	18
0 C (32 F): Frost days (min	35	104	1960	75
-10 C (14 F): Days with min	31	22	1977	8
-20 C (-4 F): Days with min	1	1	1982	1
20 C (68 F): Tropical nights (min	35	79	1980	54
25 C (77 F): Days with min	23	10	1955	3
10 mm (0.39 in): Days with 10 mm or more rain	35	52	1975	37
25 mm (0.98 in): Days with 25 mm or more rain	35	22	1983	12
50 mm (1.97 in): Days with 50 mm or more rain	29	6	1975	3
100 mm (3.94 in): Days with 100 mm or more rain	7	2	1971	1
10 cm (3.9 in): Days with 10 cm or more snowfall	25	4	1966	2
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

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Data for Philadelphia Drexel Un 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).

Philadelphia Drexel Un Threshold Days by Year (USC00366879)

Key Facts for Philadelphia Drexel Un Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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