Clark Threshold Days by Year (USC00391739)

20 fixed thresholds counted per year at Clark (USC00391739): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clark Thresholds

Clark: days with 10 mm (0.39 in) or more of precipitation in 105 years, most in 1993 with 29.
Clark: days with a maximum temperature at or above 30 C (86 F) in 104 years, most in 1933 with 76.
Clark: days with a maximum temperature at or above 90 F (32.2 C) in 104 years, most in 1933 with 52.
Clark: days with a maximum temperature at or below 0 C (32 F) in 104 years, most in 1996 with 108.
20 fixed thresholds have at least one qualifying day at Clark.

Days at or above 30 C (86 F)

104 years with a qualifying day

Days per year at Clark with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 1933.

Days at or above 30 C (86 F) per year at Clark
Year	Days	Decade average
1900	40	31.3
1901	37	31.3
1902	35	31.3
1904	21	31.3
1905	26	31.3
1906	27	31.3
1907	21	31.3
1908	39	31.3
1909	36	31.3
1910	41	26.9
1911	40	26.9
1912	15	26.9
1913	41	26.9
1914	32	26.9
1915	3	26.9
1916	31	26.9
1917	20	26.9
1918	19	26.9
1921	37	36.4
1922	44	36.4
1923	28	36.4
1924	8	36.4
1925	48	36.4
1928	37	36.4
1929	53	36.4
1930	46	59.8
1931	68	59.8
1932	47	59.8
1933	76	59.8
1934	68	59.8
1935	52	59.8
1936	68	59.8
1937	57	59.8
1938	44	59.8
1939	72	59.8
1940	56	36.8
1941	52	36.8
1942	20	36.8
1943	45	36.8
1944	31	36.8
1945	22	36.8
1946	34	36.8
1948	34	36.8
1950	25	38.9
1951	19	38.9
1952	53	38.9
1953	28	38.9
1954	42	38.9
1955	55	38.9
1956	22	38.9
1957	36	38.9
1958	49	38.9
1959	60	38.9
1960	38	28.9
1961	41	28.9
1962	21	28.9
1963	33	28.9
1965	15	28.9
1966	28	28.9
1967	28	28.9
1968	32	28.9
1969	24	28.9
1970	54	38
1971	33	38
1972	19	38
1973	37	38
1974	48	38
1975	39	38
1976	65	38
1977	23	38
1978	41	38
1979	21	38
1980	40	36.6
1981	36	36.6
1982	29	36.6
1983	59	36.6
1984	25	36.6
1985	20	36.6
1986	16	36.6
1987	46	36.6
1988	58	36.6
1989	37	36.6
1990	32	18.3
1991	27	18.3
1992	8	18.3
1993	6	18.3
1994	9	18.3
1995	25	18.3
1996	20	18.3
1997	16	18.3
1998	23	18.3
1999	17	18.3
2000	22	27.5
2001	37	27.5
2002	40	27.5
2003	31	27.5
2004	18	27.5
2005	30	27.5
2006	38	27.5
2007	34	27.5
2008	12	27.5
2009	13	27.5
2010	26	25
2011	24	25

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

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

Every Fixed Threshold

Fixed thresholds at Clark
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	104	76	1933	24
35 C (95 F): Days	84	38	1936	4
40 C (104 F): Days	17	10	1936	3
90 F (32.2 C): Days	104	52	1933	7
100 F (37.8 C): Days	35	23	1936	5
110 F (43.3 C): Days	2	1	1936	1
0 C (32 F): Ice days (max	104	108	1996	86
0 C (32 F): Frost days (min	103	206	1907	176
-10 C (14 F): Days with min	103	113	1955	81
-20 C (-4 F): Days with min	103	56	1916	39
-30 C (-22 F): Days with min	85	21	1936	5
-40 C (-40 F): Days with min	3	1	1905	1
20 C (68 F): Tropical nights (min	96	35	1931	10
25 C (77 F): Days with min	16	6	1931	2
10 mm (0.39 in): Days with 10 mm or more rain	105	29	1993	17
25 mm (0.98 in): Days with 25 mm or more rain	102	12	1900	4
50 mm (1.97 in): Days with 50 mm or more rain	52	3	1900	1
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	81	7	1937	3
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1900	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

Data for Clark 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).

Clark Threshold Days by Year (USC00391739)

Key Facts for Clark Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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