Trenton Threshold Days by Year (USW00014773)

17 fixed thresholds counted per year at Trenton (USW00014773): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Trenton Thresholds

Trenton: days with a maximum temperature at or above 30 C (86 F) in 68 years, most in 1959 with 66.
Trenton: days with a maximum temperature at or above 90 F (32.2 C) in 68 years, most in 1944 with 32.
Trenton: days with a maximum temperature at or below 0 C (32 F) in 68 years, most in 1978 with 41.
Trenton: nights with a minimum temperature at or below 0 C (32 F) in 68 years, most in 1914 with 122.
17 fixed thresholds have at least one qualifying day at Trenton.

Days at or above 30 C (86 F)

68 years with a qualifying day

Days per year at Trenton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 66 in 1959.

Days at or above 30 C (86 F) per year at Trenton
Year	Days	Decade average
1914	36	29.8
1915	31	29.8
1916	27	29.8
1917	25	29.8
1918	29	29.8
1919	31	29.8
1920	18	31.4
1921	37	31.4
1922	30	31.4
1923	33	31.4
1924	26	31.4
1925	43	31.4
1926	26	31.4
1927	21	31.4
1928	36	31.4
1929	44	31.4
1930	54	46.7
1931	50	46.7
1932	50	46.7
1933	50	46.7
1934	40	46.7
1935	37	46.7
1936	42	46.7
1937	48	46.7
1938	45	46.7
1939	51	46.7
1940	29	42.3
1941	51	42.3
1942	35	42.3
1943	54	42.3
1944	50	42.3
1945	46	42.3
1946	30	42.3
1947	46	42.3
1948	36	42.3
1949	46	42.3
1950	28	44.2
1951	39	44.2
1952	46	44.2
1953	49	44.2
1954	34	44.2
1955	51	44.2
1956	41	44.2
1957	52	44.2
1958	36	44.2
1959	66	44.2
1960	30	40.3
1961	47	40.3
1962	37	40.3
1963	36	40.3
1964	50	40.3
1965	45	40.3
1966	52	40.3
1967	31	40.3
1968	41	40.3
1969	34	40.3
1970	47	37.7
1971	32	37.7
1972	31	37.7
1973	50	37.7
1974	39	37.7
1975	39	37.7
1976	44	37.7
1977	39	37.7
1978	32	37.7
1979	24	37.7
1980	58	46
1981	34	46

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

First to last qualifying date each year at Trenton
Year	First date	Last date
1914	1914-05-20	1914-09-23
1915	1915-04-25	1915-09-17
1916	1916-05-28	1916-09-14
1917	1917-06-14	1917-08-29
1918	1918-05-06	1918-08-30
1919	1919-05-05	1919-10-03
1920	1920-06-02	1920-08-31
1921	1921-05-22	1921-09-29
1922	1922-06-07	1922-10-06
1923	1923-05-29	1923-08-15
1924	1924-06-21	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	1931-05-29	1931-10-06
1932	1932-05-16	1932-09-23
1933	1933-05-20	1933-09-27
1934	1934-05-05	1934-08-24
1935	1935-05-28	1935-08-21
1936	1936-05-08	1936-09-12
1937	1937-05-22	1937-09-04
1938	1938-04-28	1938-10-17
1939	1939-05-06	1939-10-10
1940	1940-05-14	1940-09-21
1941	1941-04-14	1941-10-06
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	1948-05-10	1948-09-18
1949	1949-05-04	1949-08-30
1950	1950-06-06	1950-09-01
1951	1951-05-15	1951-09-14
1952	1952-06-06	1952-09-13
1953	1953-05-11	1953-09-05
1954	1954-06-01	1954-10-13
1955	1955-05-05	1955-08-22
1956	1956-05-13	1956-09-14
1957	1957-04-27	1957-09-22
1958	1958-05-31	1958-09-26
1959	1959-05-07	1959-10-06
1960	1960-04-23	1960-09-09
1961	1961-06-02	1961-09-24
1962	1962-04-26	1962-09-01
1963	1963-05-09	1963-09-12
1964	1964-05-08	1964-09-23
1965	1965-05-03	1965-09-23
1966	1966-06-04	1966-09-03
1967	1967-06-04	1967-10-05
1968	1968-06-06	1968-09-25
1969	1969-05-29	1969-09-17
1970	1970-05-09	1970-09-26
1971	1971-05-19	1971-09-09
1972	1972-07-02	1972-09-17
1973	1973-06-04	1973-09-06
1974	1974-04-29	1974-09-13
1975	1975-05-20	1975-10-14
1976	1976-04-17	1976-09-14
1977	1977-04-12	1977-09-19
1978	1978-05-20	1978-09-07
1979	1979-05-09	1979-09-04
1980	1980-05-05	1980-09-23
1981	1981-05-25	1981-09-14

Every Fixed Threshold

Fixed thresholds at Trenton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	68	66	1959	34
35 C (95 F): Days	54	15	1955	2
40 C (104 F): Days	2	2	1936	2
90 F (32.2 C): Days	68	32	1944	11
100 F (37.8 C): Days	12	3	1936	1
0 C (32 F): Ice days (max	68	41	1978	21
0 C (32 F): Frost days (min	68	122	1914	61
-10 C (14 F): Days with min	65	32	1934	14
-20 C (-4 F): Days with min	5	3	1917	1
20 C (68 F): Tropical nights (min	68	56	1959	42
25 C (77 F): Days with min	21	3	1930	3
10 mm (0.39 in): Days with 10 mm or more rain	68	47	1953	31
25 mm (0.98 in): Days with 25 mm or more rain	68	18	1975	8
50 mm (1.97 in): Days with 50 mm or more rain	57	6	1938	1
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1921	1
10 cm (3.9 in): Days with 10 cm or more snowfall	52	4	1926	1
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1915	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

Data for Trenton 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).

Trenton Threshold Days by Year (USW00014773)

Key Facts for Trenton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related