Delphi 2 N Threshold Days by Year (USC00122149)

19 fixed thresholds counted per year at Delphi 2 N (USC00122149): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Delphi 2 N Thresholds

Delphi 2 N: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 2007 with 53.
Delphi 2 N: days with 25 mm (0.98 in) or more of precipitation in 109 years, most in 1927 with 17.
Delphi 2 N: days with a maximum temperature at or above 30 C (86 F) in 108 years, most in 1936 with 98.
Delphi 2 N: days with a maximum temperature at or above 90 F (32.2 C) in 108 years, most in 1936 with 82.
19 fixed thresholds have at least one qualifying day at Delphi 2 N.

Days at or above 30 C (86 F)

108 years with a qualifying day

Days per year at Delphi 2 N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 98 in 1936.

Days at or above 30 C (86 F) per year at Delphi 2 N
Year	Days	Decade average
1893	39	64.9
1894	76	64.9
1895	86	64.9
1896	43	64.9
1897	68	64.9
1898	63	64.9
1899	79	64.9
1900	72	58.4
1901	81	58.4
1902	45	58.4
1903	55	58.4
1904	38	58.4
1905	50	58.4
1907	45	58.4
1908	81	58.4
1910	69	65.9
1911	72	65.9
1912	59	65.9
1913	75	65.9
1914	83	65.9
1915	39	65.9
1918	60	65.9
1919	70	65.9
1920	74	67.2
1921	96	67.2
1922	90	67.2
1923	63	67.2
1924	30	67.2
1925	84	67.2
1926	68	67.2
1927	52	67.2
1928	59	67.2
1929	56	67.2
1930	81	83
1931	79	83
1932	75	83
1933	86	83
1934	91	83
1935	68	83
1936	98	83
1937	71	83
1938	91	83
1939	90	83
1940	66	62.2
1941	88	62.2
1942	64	62.2
1943	67	62.2
1944	83	62.2
1945	40	62.2
1946	58	62.2
1947	49	62.2
1948	51	62.2
1949	56	62.2
1950	32	61.6
1951	25	61.6
1952	65	61.6
1953	84	61.6
1954	76	61.6
1955	77	61.6
1956	63	61.6
1959	71	61.6
1960	49	51.6
1961	57	51.6
1962	51	51.6
1963	58	51.6
1964	71	51.6
1965	37	51.6
1966	59	51.6
1967	44	51.6
1968	43	51.6
1969	47	51.6
1970	58	44.1
1971	50	44.1
1972	42	44.1
1973	40	44.1
1974	37	44.1
1975	44	44.1
1976	39	44.1
1977	59	44.1
1978	45	44.1
1979	27	44.1
1980	62	54.6
1981	26	54.6
1982	30	54.6
1983	80	54.6
1984	57	54.6
1985	51	54.6
1986	51	54.6
1987	65	54.6
1988	85	54.6
1989	39	54.6
1990	34	45.5
1991	77	45.5
1992	24	45.5
1993	44	45.5
1994	36	45.5
1997	35	45.5
1998	52	45.5
1999	62	45.5
2000	34	39.8
2001	46	39.8
2002	65	39.8
2003	33	39.8
2006	35	39.8
2007	60	39.8
2008	26	39.8
2009	19	39.8
2010	68	68

For each year, a bar from the first to the last day at Delphi 2 N meeting 30 C (86 F).

First to last qualifying date each year at Delphi 2 N
Year	First date	Last date
1893	1893-06-12	1893-09-15
1894	1894-05-14	1894-09-29
1895	1895-04-25	1895-09-22
1896	1896-05-08	1896-09-14
1897	1897-05-07	1897-10-15
1898	1898-05-24	1898-10-03
1899	1899-04-26	1899-10-15
1900	1900-05-12	1900-10-05
1901	1901-04-29	1901-09-27
1902	1902-04-21	1902-09-22
1903	1903-05-09	1903-10-03
1904	1904-05-08	1904-09-28
1905	1905-06-04	1905-10-08
1907	1907-06-16	1907-10-02
1908	1908-05-15	1908-10-21
1910	1910-03-24	1910-10-19
1911	1911-05-10	1911-09-11
1912	1912-05-21	1912-10-06
1913	1913-05-02	1913-10-10
1914	1914-05-20	1914-10-20
1915	1915-04-24	1915-09-16
1918	1918-05-25	1918-08-28
1919	1919-05-29	1919-10-04
1920	1920-05-23	1920-10-22
1921	1921-05-18	1921-09-29
1922	1922-05-09	1922-10-06
1923	1923-05-29	1923-09-28
1924	1924-06-13	1924-09-20
1925	1925-04-23	1925-09-26
1926	1926-05-01	1926-10-03
1927	1927-05-21	1927-10-28
1928	1928-05-03	1928-10-12
1929	1929-05-27	1929-09-28
1930	1930-04-10	1930-10-12
1931	1931-05-16	1931-10-05
1932	1932-05-06	1932-09-15
1933	1933-05-23	1933-09-30
1934	1934-05-03	1934-09-26
1935	1935-04-26	1935-10-13
1936	1936-05-06	1936-09-22
1937	1937-05-21	1937-10-05
1938	1938-04-19	1938-10-18
1939	1939-05-17	1939-10-09
1940	1940-05-13	1940-09-21
1941	1941-04-13	1941-09-24
1942	1942-04-29	1942-09-18
1943	1943-05-05	1943-09-30
1944	1944-05-12	1944-09-27
1945	1945-06-01	1945-09-23
1946	1946-04-22	1946-10-07
1947	1947-05-15	1947-09-20
1948	1948-06-02	1948-09-19
1949	1949-05-03	1949-10-10
1950	1950-05-15	1950-10-31
1951	1951-04-30	1951-10-04
1952	1952-04-30	1952-09-30
1953	1953-05-25	1953-10-22
1954	1954-04-26	1954-10-04
1955	1955-05-03	1955-09-21
1956	1956-05-12	1956-10-18
1959	1959-05-02	1959-09-28
1960	1960-04-22	1960-09-24
1961	1961-06-01	1961-09-23
1962	1962-04-30	1962-09-13
1963	1963-05-08	1963-10-22
1964	1964-05-16	1964-09-21
1965	1965-05-08	1965-09-20
1966	1966-05-27	1966-09-14
1967	1967-05-25	1967-10-04
1968	1968-06-06	1968-09-03
1969	1969-05-28	1969-09-01
1970	1970-05-20	1970-09-21
1971	1971-05-17	1971-10-02
1972	1972-05-20	1972-09-17
1973	1973-06-03	1973-09-26
1974	1974-05-21	1974-09-11
1975	1975-05-18	1975-09-04
1976	1976-06-06	1976-09-14
1977	1977-04-17	1977-09-01
1978	1978-05-26	1978-09-20
1979	1979-05-08	1979-09-11
1980	1980-04-22	1980-10-08
1981	1981-06-04	1981-09-13
1982	1982-05-05	1982-10-06
1983	1983-06-10	1983-10-02
1984	1984-05-18	1984-09-21
1985	1985-04-21	1985-09-21
1986	1986-04-25	1986-09-29
1987	1987-04-29	1987-09-10
1988	1988-05-12	1988-09-23
1989	1989-04-25	1989-10-14
1990	1990-06-08	1990-10-05
1991	1991-05-11	1991-09-16
1992	1992-05-11	1992-09-15
1993	1993-05-08	1993-08-30
1994	1994-05-21	1994-09-16
1997	1997-06-19	1997-10-08
1998	1998-05-14	1998-09-27
1999	1999-05-11	1999-09-28
2000	2000-05-08	2000-09-19
2001	2001-04-30	2001-09-08
2002	2002-04-19	2002-10-02
2003	2003-05-09	2003-09-13
2006	2006-05-28	2006-08-23
2007	2007-04-30	2007-10-08
2008	2008-05-30	2008-10-12
2009	2009-06-01	2009-08-17
2010	2010-05-21	2010-10-10

Every Fixed Threshold

Fixed thresholds at Delphi 2 N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	108	98	1936	68
35 C (95 F): Days	88	47	1936	1
40 C (104 F): Days	16	12	1936	1
90 F (32.2 C): Days	108	82	1936	25
100 F (37.8 C): Days	39	25	1936	2
110 F (43.3 C): Days	2	5	1936	5
0 C (32 F): Ice days (max	108	59	2010	59
0 C (32 F): Frost days (min	108	164	1907	131
-10 C (14 F): Days with min	108	60	1904	43
-20 C (-4 F): Days with min	88	22	1963	1
-30 C (-22 F): Days with min	6	3	1963	1
20 C (68 F): Tropical nights (min	108	42	1949	31
25 C (77 F): Days with min	25	4	1896	3
10 mm (0.39 in): Days with 10 mm or more rain	109	53	2007	26
25 mm (0.98 in): Days with 25 mm or more rain	109	17	1927	15
50 mm (1.97 in): Days with 50 mm or more rain	80	5	1936	3
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1901	1
10 cm (3.9 in): Days with 10 cm or more snowfall	58	5	2007	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1927	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.

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Data for Delphi 2 N 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).

Delphi 2 N Threshold Days by Year (USC00122149)

Key Facts for Delphi 2 N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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