Mt Pleasant 1 SW Threshold Days by Year (USC00135796)

20 fixed thresholds counted per year at Mt Pleasant 1 SW (USC00135796): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Pleasant 1 SW Thresholds

Mt Pleasant 1 SW: nights with a minimum temperature at or below 0 C (32 F) in 122 years, most in 2013 with 159.
Mt Pleasant 1 SW: nights with a minimum temperature at or below -10 C (14 F) in 122 years, most in 2014 with 69.
Mt Pleasant 1 SW: nights with a minimum temperature at or above 20 C (68 F) in 122 years, most in 1983 with 55.
Mt Pleasant 1 SW: days with 10 mm (0.39 in) or more of precipitation in 122 years, most in 1973 with 51.
20 fixed thresholds have at least one qualifying day at Mt Pleasant 1 SW.

Days at or above 30 C (86 F)

107 years with a qualifying day

Days per year at Mt Pleasant 1 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 94 in 1934.

Days at or above 30 C (86 F) per year at Mt Pleasant 1 SW
Year	Days	Decade average
1899	77	77
1900	77	54.8
1901	79	54.8
1902	39	54.8
1904	37	54.8
1905	45	54.8
1906	72	54.8
1907	40	54.8
1908	57	54.8
1909	47	54.8
1910	71	60.7
1911	71	60.7
1912	40	60.7
1913	71	60.7
1914	75	60.7
1915	33	60.7
1916	63	60.7
1917	44	60.7
1918	65	60.7
1919	74	60.7
1920	53	53.5
1921	78	53.5
1922	71	53.5
1923	55	53.5
1924	35	53.5
1925	65	53.5
1926	52	53.5
1927	53	53.5
1928	26	53.5
1929	47	53.5
1930	65	73.7
1931	63	73.7
1932	44	73.7
1933	73	73.7
1934	94	73.7
1935	63	73.7
1936	90	73.7
1937	83	73.7
1938	81	73.7
1939	81	73.7
1940	63	65.4
1941	80	65.4
1942	72	65.4
1943	74	65.4
1944	76	65.4
1945	46	65.4
1946	46	65.4
1947	65	65.4
1948	62	65.4
1949	70	65.4
1950	41	61.3
1951	44	61.3
1952	70	61.3
1953	90	61.3
1954	72	61.3
1955	70	61.3
1956	82	61.3
1957	51	61.3
1958	27	61.3
1959	66	61.3
1960	46	50.4
1961	52	50.4
1962	58	50.4
1963	67	50.4
1964	64	50.4
1965	41	50.4
1966	50	50.4
1967	27	50.4
1968	55	50.4
1969	44	50.4
1971	64	47
1972	51	47
1973	35	47
1974	32	47
1975	57	47
1976	37	47
1977	53	47
1978	47	47
1979	47	47
1980	66	47.6
1981	29	47.6
1982	30	47.6
1983	75	47.6
1984	44	47.6
1985	43	47.6
1986	35	47.6
1987	62	47.6
1988	65	47.6
1989	27	47.6
1990	31	32
1991	48	32
1992	17	32
1993	25	32
1994	39	32
1996	32	32
2011	59	49.2
2012	67	49.2
2013	46	49.2
2014	32	49.2
2015	32	49.2
2016	43	49.2
2017	53	49.2
2018	68	49.2
2019	43	49.2
2024	45	44.3
2025	46	44.3
2026	42	44.3

For each year, a bar from the first to the last day at Mt Pleasant 1 SW meeting 30 C (86 F).

First to last qualifying date each year at Mt Pleasant 1 SW
Year	First date	Last date
1899	1899-05-12	1899-10-22
1900	1900-05-13	1900-10-05
1901	1901-04-29	1901-09-26
1902	1902-04-21	1902-08-29
1904	1904-05-21	1904-09-28
1905	1905-05-29	1905-09-28
1906	1906-05-12	1906-09-19
1907	1907-03-21	1907-09-19
1908	1908-04-15	1908-09-26
1909	1909-05-05	1909-09-13
1910	1910-03-23	1910-09-07
1911	1911-05-09	1911-09-14
1912	1912-05-22	1912-09-10
1913	1913-05-28	1913-09-07
1914	1914-05-10	1914-09-19
1915	1915-04-25	1915-09-13
1916	1916-05-07	1916-10-08
1917	1917-05-17	1917-09-15
1918	1918-05-03	1918-10-05
1919	1919-05-30	1919-10-03
1920	1920-06-01	1920-09-25
1921	1921-05-18	1921-09-20
1922	1922-05-10	1922-10-05
1923	1923-05-31	1923-09-04
1924	1924-05-05	1924-10-16
1925	1925-04-22	1925-09-21
1926	1926-04-30	1926-10-08
1927	1927-06-19	1927-10-28
1928	1928-05-03	1928-10-10
1929	1929-04-04	1929-09-28
1930	1930-04-10	1930-09-23
1931	1931-05-16	1931-09-20
1932	1932-05-14	1932-09-19
1933	1933-06-03	1933-09-30
1934	1934-05-03	1934-09-25
1935	1935-06-12	1935-09-25
1936	1936-04-20	1936-09-22
1937	1937-05-29	1937-10-29
1938	1938-03-21	1938-10-14
1939	1939-05-21	1939-10-08
1940	1940-05-13	1940-10-26
1941	1941-04-13	1941-09-23
1942	1942-04-30	1942-10-09
1943	1943-05-05	1943-09-06
1944	1944-05-15	1944-09-18
1945	1945-05-20	1945-09-09
1946	1946-06-06	1946-09-27
1947	1947-06-09	1947-10-14
1948	1948-05-20	1948-09-20
1949	1949-05-03	1949-10-09
1950	1950-05-18	1950-10-31
1951	1951-05-01	1951-10-04
1952	1952-04-28	1952-09-30
1953	1953-05-25	1953-10-20
1954	1954-06-09	1954-10-03
1955	1955-05-03	1955-09-21
1956	1956-04-27	1956-10-12
1957	1957-06-05	1957-09-19
1958	1958-05-11	1958-09-05
1959	1959-05-02	1959-09-22
1960	1960-04-22	1960-10-12
1961	1961-05-31	1961-09-10
1962	1962-04-26	1962-10-13
1963	1963-05-08	1963-10-15
1964	1964-04-16	1964-09-09
1965	1965-04-30	1965-09-09
1966	1966-05-05	1966-09-02
1967	1967-05-18	1967-10-04
1968	1968-05-02	1968-09-03
1969	1969-05-27	1969-10-04
1971	1971-04-12	1971-10-01
1972	1972-05-19	1972-09-19
1973	1973-06-08	1973-09-01
1974	1974-06-14	1974-08-26
1975	1975-05-18	1975-10-13
1976	1976-06-08	1976-10-02
1977	1977-05-15	1977-08-31
1978	1978-05-25	1978-09-20
1979	1979-05-08	1979-10-20
1980	1980-04-21	1980-09-20
1981	1981-04-02	1981-09-30
1982	1982-06-25	1982-09-30
1983	1983-06-20	1983-09-19
1984	1984-06-16	1984-09-24
1985	1985-05-10	1985-09-19
1986	1986-03-29	1986-09-26
1987	1987-04-20	1987-09-05
1988	1988-05-14	1988-09-22
1989	1989-04-25	1989-08-27
1990	1990-06-12	1990-10-06
1991	1991-05-28	1991-09-14
1992	1992-05-16	1992-08-25
1993	1993-06-17	1993-09-12
1994	1994-06-06	1994-09-30
1996	1996-05-17	1996-09-05
2011	2011-05-10	2011-09-13
2012	2012-04-02	2012-09-12
2013	2013-05-15	2013-10-03
2014	2014-05-08	2014-09-05
2015	2015-06-06	2015-09-18
2016	2016-06-10	2016-10-18
2017	2017-05-16	2017-09-26
2018	2018-05-25	2018-10-04
2019	2019-05-17	2019-10-02
2024	2024-05-19	2024-10-13
2025	2025-05-16	2025-10-05
2026	2026-03-22	2026-08-31

Every Fixed Threshold

Fixed thresholds at Mt Pleasant 1 SW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	107	94	1934	42
35 C (95 F): Days	93	51	1936	2
40 C (104 F): Days	12	13	1936	1
45 C (113 F): Days	1	1	1936	1
90 F (32.2 C): Days	107	69	1936	20
100 F (37.8 C): Days	41	33	1936	2
110 F (43.3 C): Days	1	3	1936	3
0 C (32 F): Ice days (max	107	72	1978	20
0 C (32 F): Frost days (min	122	159	2013	52
-10 C (14 F): Days with min	122	69	2014	23
-20 C (-4 F): Days with min	116	26	1936	5
-30 C (-22 F): Days with min	12	3	1996	1
20 C (68 F): Tropical nights (min	122	55	1983	13
25 C (77 F): Days with min	35	10	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	122	51	1973	24
25 mm (0.98 in): Days with 25 mm or more rain	122	19	1973	12
50 mm (1.97 in): Days with 50 mm or more rain	106	5	1921	4
100 mm (3.94 in): Days with 100 mm or more rain	15	1	1905	1
10 cm (3.9 in): Days with 10 cm or more snowfall	85	5	1912	2
25 cm (9.8 in): Days with 25 cm or more snowfall	3	2	1918	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.

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Data for Mt Pleasant 1 SW 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Mt Pleasant 1 SW Threshold Days by Year (USC00135796)

Key Facts for Mt Pleasant 1 SW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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