Harlan Threshold Days by Year (USC00133632)

20 fixed thresholds counted per year at Harlan (USC00133632): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Harlan Thresholds

Harlan: days with a maximum temperature at or above 30 C (86 F) in 115 years, most in 1934 with 93.
Harlan: days with a maximum temperature at or above 90 F (32.2 C) in 115 years, most in 1934 with 72.
Harlan: days with a maximum temperature at or below 0 C (32 F) in 115 years, most in 1978 with 81.
Harlan: nights with a minimum temperature at or below 0 C (32 F) in 115 years, most in 2013 with 173.
20 fixed thresholds have at least one qualifying day at Harlan.

Days at or above 30 C (86 F)

115 years with a qualifying day

Days per year at Harlan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 93 in 1934.

Days at or above 30 C (86 F) per year at Harlan
Year	Days	Decade average
1899	51	51
1900	65	46
1901	89	46
1902	36	46
1903	28	46
1904	29	46
1905	38	46
1906	38	46
1907	47	46
1908	45	46
1909	45	46
1910	48	52.7
1911	74	52.7
1912	41	52.7
1913	62	52.7
1914	64	52.7
1915	13	52.7
1916	59	52.7
1917	42	52.7
1918	67	52.7
1919	57	52.7
1921	61	44.7
1922	51	44.7
1923	43	44.7
1924	21	44.7
1925	55	44.7
1926	57	44.7
1927	46	44.7
1928	32	44.7
1929	36	44.7
1930	56	75.9
1931	83	75.9
1932	61	75.9
1933	79	75.9
1934	93	75.9
1935	62	75.9
1936	91	75.9
1937	75	75.9
1938	76	75.9
1939	83	75.9
1940	53	52.5
1941	66	52.5
1942	52	52.5
1943	62	52.5
1944	54	52.5
1945	34	52.5
1946	46	52.5
1947	62	52.5
1948	60	52.5
1949	36	52.5
1950	26	55.4
1951	24	55.4
1952	50	55.4
1953	74	55.4
1954	73	55.4
1955	79	55.4
1956	77	55.4
1957	51	55.4
1958	41	55.4
1959	59	55.4
1960	44	49.3
1961	48	49.3
1962	56	49.3
1963	62	49.3
1964	55	49.3
1965	36	49.3
1966	49	49.3
1967	34	49.3
1968	57	49.3
1969	52	49.3
1970	69	49.4
1971	59	49.4
1972	46	49.4
1973	45	49.4
1974	42	49.4
1975	56	49.4
1976	40	49.4
1977	46	49.4
1978	54	49.4
1979	37	49.4
1980	60	45.6
1981	35	45.6
1982	26	45.6
1983	68	45.6
1984	38	45.6
1985	30	45.6
1986	33	45.6
1987	54	45.6
1988	72	45.6
1989	40	45.6
1990	43	40.7
1991	48	40.7
1992	13	40.7
1993	25	40.7
1994	46	40.7
1995	56	40.7
1996	23	40.7
1997	58	40.7
1998	60	40.7
1999	35	40.7
2000	47	44.8
2001	54	44.8
2002	60	44.8
2003	49	44.8
2004	24	44.8
2005	56	44.8
2006	51	44.8
2007	64	44.8
2008	26	44.8
2009	17	44.8
2010	49	49.6
2011	44	49.6
2012	69	49.6
2013	42	49.6
2014	44	49.6

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

First to last qualifying date each year at Harlan
Year	First date	Last date
1899	1899-06-02	1899-10-22
1900	1900-05-11	1900-09-10
1901	1901-04-26	1901-10-19
1902	1902-04-20	1902-08-19
1903	1903-06-19	1903-08-24
1904	1904-05-24	1904-09-28
1905	1905-06-02	1905-08-31
1906	1906-04-24	1906-09-16
1907	1907-03-21	1907-09-19
1908	1908-05-20	1908-09-25
1909	1909-05-05	1909-10-02
1910	1910-03-23	1910-09-30
1911	1911-05-09	1911-09-17
1912	1912-05-19	1912-09-09
1913	1913-05-29	1913-09-07
1914	1914-05-10	1914-09-18
1915	1915-04-28	1915-08-07
1916	1916-04-12	1916-10-07
1917	1917-05-17	1917-09-16
1918	1918-05-03	1918-09-13
1919	1919-05-30	1919-10-01
1921	1921-04-24	1921-09-23
1922	1922-06-07	1922-09-07
1923	1923-06-01	1923-09-05
1924	1924-05-05	1924-08-30
1925	1925-04-22	1925-09-19
1926	1926-04-29	1926-09-21
1927	1927-04-26	1927-09-17
1928	1928-05-02	1928-10-10
1929	1929-04-04	1929-09-03
1930	1930-04-10	1930-10-10
1931	1931-04-08	1931-10-10
1932	1932-05-13	1932-10-02
1933	1933-05-16	1933-09-25
1934	1934-05-05	1934-10-12
1935	1935-06-12	1935-09-24
1936	1936-04-30	1936-09-22
1937	1937-05-20	1937-10-29
1938	1938-06-05	1938-10-16
1939	1939-04-24	1939-10-06
1940	1940-04-14	1940-09-22
1941	1941-05-14	1941-09-21
1942	1942-04-29	1942-09-16
1943	1943-05-28	1943-10-10
1944	1944-05-14	1944-09-17
1945	1945-05-20	1945-09-23
1946	1946-04-19	1946-09-26
1947	1947-05-14	1947-10-21
1948	1948-04-18	1948-09-19
1949	1949-04-25	1949-09-20
1950	1950-04-22	1950-09-18
1951	1951-06-17	1951-09-11
1952	1952-05-02	1952-09-30
1953	1953-05-25	1953-10-15
1954	1954-04-14	1954-10-03
1955	1955-04-18	1955-09-18
1956	1956-04-01	1956-10-12
1957	1957-06-04	1957-09-01
1958	1958-05-11	1958-10-04
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-10-11
1961	1961-04-20	1961-09-10
1962	1962-05-04	1962-09-15
1963	1963-05-08	1963-10-06
1964	1964-04-16	1964-09-09
1965	1965-04-30	1965-08-26
1966	1966-05-05	1966-08-31
1967	1967-05-18	1967-09-25
1968	1968-03-30	1968-09-14
1969	1969-05-26	1969-10-04
1970	1970-04-28	1970-09-20
1971	1971-06-03	1971-10-01
1972	1972-04-06	1972-09-19
1973	1973-05-20	1973-08-30
1974	1974-06-03	1974-08-26
1975	1975-05-05	1975-10-13
1976	1976-05-20	1976-10-01
1977	1977-04-09	1977-08-27
1978	1978-05-19	1978-09-18
1979	1979-05-17	1979-09-05
1980	1980-04-20	1980-09-20
1981	1981-04-25	1981-09-29
1982	1982-05-04	1982-08-19
1983	1983-05-27	1983-10-02
1984	1984-06-16	1984-09-19
1985	1985-04-18	1985-09-18
1986	1986-03-29	1986-09-21
1987	1987-04-19	1987-09-04
1988	1988-05-12	1988-09-17
1989	1989-04-21	1989-09-01
1990	1990-05-07	1990-10-05
1991	1991-04-05	1991-09-13
1992	1992-04-30	1992-08-09
1993	1993-05-27	1993-09-12
1994	1994-04-17	1994-09-30
1995	1995-06-14	1995-10-12
1996	1996-04-11	1996-08-14
1997	1997-05-16	1997-10-07
1998	1998-05-18	1998-09-29
1999	1999-06-05	1999-09-24
2000	2000-05-12	2000-09-19
2001	2001-04-26	2001-10-02
2002	2002-04-15	2002-09-30
2003	2003-04-02	2003-10-20
2004	2004-04-17	2004-09-20
2005	2005-05-11	2005-10-05
2006	2006-04-14	2006-10-04
2007	2007-04-30	2007-10-08
2008	2008-05-26	2008-09-02
2009	2009-04-25	2009-08-14
2010	2010-04-02	2010-10-09
2011	2011-05-10	2011-10-05
2012	2012-04-01	2012-09-12
2013	2013-05-15	2013-09-28
2014	2014-04-13	2014-09-04

Every Fixed Threshold

Fixed thresholds at Harlan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	115	93	1934	44
35 C (95 F): Days	95	50	1936	5
40 C (104 F): Days	17	19	1936	1
45 C (113 F): Days	1	1	1936	1
90 F (32.2 C): Days	115	72	1934	23
100 F (37.8 C): Days	39	33	1936	1
110 F (43.3 C): Days	3	4	1936	4
0 C (32 F): Ice days (max	115	81	1978	61
0 C (32 F): Frost days (min	115	173	2013	148
-10 C (14 F): Days with min	115	78	1978	62
-20 C (-4 F): Days with min	114	33	1963	24
-30 C (-22 F): Days with min	36	7	1905	1
20 C (68 F): Tropical nights (min	115	43	1983	16
25 C (77 F): Days with min	14	3	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	111	39	1909	32
25 mm (0.98 in): Days with 25 mm or more rain	111	15	1973	15
50 mm (1.97 in): Days with 50 mm or more rain	85	5	1922	2
100 mm (3.94 in): Days with 100 mm or more rain	13	2	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	72	6	1948	2
25 cm (9.8 in): Days with 25 cm or more snowfall	10	2	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Harlan 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).

Harlan Threshold Days by Year (USC00133632)

Key Facts for Harlan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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