Ellsworth Threshold Days by Year (USC00142459)

20 fixed thresholds counted per year at Ellsworth (USC00142459): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ellsworth Thresholds

Ellsworth: days with 10 mm (0.39 in) or more of precipitation in 115 years, most in 1915 with 40.
Ellsworth: days with 25 mm (0.98 in) or more of precipitation in 115 years, most in 2007 with 16.
Ellsworth: days with a maximum temperature at or above 30 C (86 F) in 112 years, most in 1939 with 133.
Ellsworth: days with a maximum temperature at or above 35 C (95 F) in 112 years, most in 1913 with 81.
20 fixed thresholds have at least one qualifying day at Ellsworth.

Days at or above 30 C (86 F)

112 years with a qualifying day

Days per year at Ellsworth with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 133 in 1939.

Days at or above 30 C (86 F) per year at Ellsworth
Year	Days	Decade average
1905	99	96.3
1906	89	96.3
1907	99	96.3
1909	98	96.3
1910	93	98.2
1911	117	98.2
1912	91	98.2
1913	110	98.2
1914	115	98.2
1915	70	98.2
1916	105	98.2
1917	78	98.2
1918	102	98.2
1919	101	98.2
1921	116	94.9
1922	97	94.9
1923	86	94.9
1924	89	94.9
1925	112	94.9
1926	105	94.9
1927	88	94.9
1928	77	94.9
1929	84	94.9
1930	95	110.9
1931	118	110.9
1932	104	110.9
1933	113	110.9
1934	115	110.9
1935	82	110.9
1936	115	110.9
1937	112	110.9
1938	122	110.9
1939	133	110.9
1940	105	99.1
1941	100	99.1
1942	94	99.1
1943	104	99.1
1944	102	99.1
1945	85	99.1
1946	92	99.1
1947	117	99.1
1948	105	99.1
1949	87	99.1
1950	72	95.6
1951	57	95.6
1952	107	95.6
1953	107	95.6
1954	112	95.6
1955	96	95.6
1956	133	95.6
1957	80	95.6
1958	91	95.6
1959	101	95.6
1960	90	92.7
1961	80	92.7
1962	92	92.7
1963	107	92.7
1964	96	92.7
1965	97	92.7
1966	95	92.7
1967	80	92.7
1968	101	92.7
1969	89	92.7
1970	113	99.9
1971	106	99.9
1972	105	99.9
1973	88	99.9
1974	88	99.9
1975	98	99.9
1976	100	99.9
1977	91	99.9
1978	103	99.9
1979	107	99.9
1980	118	90.2
1981	83	90.2
1982	80	90.2
1983	105	90.2
1984	103	90.2
1985	78	90.2
1986	79	90.2
1987	80	90.2
1988	99	90.2
1989	77	90.2
1990	89	86.2
1991	109	86.2
1992	59	86.2
1993	80	86.2
1994	94	86.2
2001	79	77.7
2002	96	77.7
2003	79	77.7
2004	75	77.7
2005	89	77.7
2006	95	77.7
2007	70	77.7
2008	60	77.7
2009	56	77.7
2010	91	97
2011	100	97
2013	92	97
2014	98	97
2015	94	97
2016	90	97
2017	98	97
2018	110	97
2019	100	97
2020	99	103.2
2021	102	103.2
2022	118	103.2
2023	110	103.2
2024	104	103.2
2026	86	103.2

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

First to last qualifying date each year at Ellsworth
Year	First date	Last date
1905	1905-03-27	1905-10-07
1906	1906-04-11	1906-10-07
1907	1907-03-19	1907-10-02
1909	1909-04-04	1909-11-04
1910	1910-03-21	1910-10-16
1911	1911-04-02	1911-10-11
1912	1912-04-05	1912-10-05
1913	1913-04-02	1913-09-10
1914	1914-04-20	1914-10-17
1915	1915-04-27	1915-09-19
1916	1916-03-12	1916-10-07
1917	1917-03-22	1917-10-04
1918	1918-03-12	1918-10-12
1919	1919-06-07	1919-10-03
1921	1921-03-18	1921-10-24
1922	1922-05-20	1922-10-28
1923	1923-05-27	1923-09-27
1924	1924-04-07	1924-10-04
1925	1925-03-06	1925-09-29
1926	1926-04-17	1926-09-23
1927	1927-04-26	1927-10-27
1928	1928-04-02	1928-10-10
1929	1929-04-03	1929-09-27
1930	1930-04-09	1930-10-09
1931	1931-04-07	1931-10-10
1932	1932-05-03	1932-10-02
1933	1933-04-18	1933-09-25
1934	1934-04-10	1934-10-26
1935	1935-03-14	1935-10-12
1936	1936-04-12	1936-09-22
1937	1937-04-16	1937-10-29
1938	1938-03-21	1938-10-25
1939	1939-04-14	1939-10-26
1940	1940-03-31	1940-10-24
1941	1941-05-13	1941-10-13
1942	1942-04-04	1942-10-02
1943	1943-03-29	1943-10-19
1944	1944-05-12	1944-09-26
1945	1945-05-13	1945-10-18
1946	1946-03-31	1946-10-03
1947	1947-03-23	1947-10-21
1948	1948-04-06	1948-09-22
1949	1949-04-25	1949-10-08
1950	1950-03-26	1950-11-01
1951	1951-04-29	1951-10-04
1952	1952-04-09	1952-10-26
1953	1953-03-21	1953-10-11
1954	1954-04-07	1954-10-10
1955	1955-04-16	1955-10-12
1956	1956-04-01	1956-10-12
1957	1957-05-29	1957-10-05
1958	1958-05-17	1958-10-19
1959	1959-04-02	1959-09-21
1960	1960-04-21	1960-09-22
1961	1961-04-19	1961-10-17
1962	1962-04-19	1962-10-14
1963	1963-04-15	1963-10-14
1964	1964-04-16	1964-10-07
1965	1965-04-20	1965-10-10
1966	1966-03-31	1966-10-13
1967	1967-03-23	1967-10-04
1968	1968-03-30	1968-10-30
1969	1969-05-27	1969-10-09
1970	1970-04-27	1970-10-01
1971	1971-03-31	1971-10-14
1972	1972-02-29	1972-10-10
1973	1973-05-18	1973-10-23
1974	1974-04-27	1974-10-05
1975	1975-04-23	1975-10-22
1976	1976-03-25	1976-10-14
1977	1977-04-27	1977-10-26
1978	1978-03-31	1978-10-21
1979	1979-05-16	1979-10-20
1980	1980-04-20	1980-11-06
1981	1981-04-10	1981-09-30
1982	1982-04-12	1982-10-05
1983	1983-05-06	1983-10-05
1984	1984-05-24	1984-09-24
1985	1985-05-24	1985-09-18
1986	1986-03-28	1986-09-29
1987	1987-04-19	1987-10-01
1988	1988-05-12	1988-09-27
1989	1989-04-21	1989-10-15
1990	1990-06-05	1990-10-06
1991	1991-05-12	1991-10-24
1992	1992-04-30	1992-10-03
1993	1993-05-27	1993-10-08
1994	1994-04-17	1994-10-02
2001	2001-04-21	2001-09-13
2002	2002-04-15	2002-10-02
2003	2003-04-03	2003-10-23
2004	2004-04-17	2004-09-21
2005	2005-05-11	2005-10-19
2006	2006-04-14	2006-11-09
2007	2007-06-07	2007-10-06
2008	2008-05-19	2008-09-29
2009	2009-04-23	2009-09-28
2010	2010-04-06	2010-10-09
2011	2011-04-04	2011-10-05
2013	2013-04-30	2013-10-05
2014	2014-04-10	2014-10-27
2015	2015-03-17	2015-10-21
2016	2016-05-26	2016-10-29
2017	2017-03-20	2017-10-03
2018	2018-04-13	2018-10-04
2019	2019-04-10	2019-10-02
2020	2020-04-08	2020-10-12
2021	2021-04-27	2021-10-10
2022	2022-03-29	2022-10-24
2023	2023-04-13	2023-10-24
2024	2024-04-14	2024-10-29
2026	2026-05-04	2026-08-31

Every Fixed Threshold

Fixed thresholds at Ellsworth
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	112	133	1939	86
35 C (95 F): Days	112	81	1913	31
40 C (104 F): Days	90	46	1934	12
45 C (113 F): Days	8	9	1936	1
90 F (32.2 C): Days	112	114	1956	63
100 F (37.8 C): Days	109	62	1934	16
110 F (43.3 C): Days	27	21	1934	1
0 C (32 F): Ice days (max	111	48	1978	15
0 C (32 F): Frost days (min	108	157	2013	119
-10 C (14 F): Days with min	108	55	1912	15
-20 C (-4 F): Days with min	87	17	1905	7
-30 C (-22 F): Days with min	9	3	1979	3
20 C (68 F): Tropical nights (min	109	69	1954	38
25 C (77 F): Days with min	69	23	1934	10
10 mm (0.39 in): Days with 10 mm or more rain	115	40	1915	8
25 mm (0.98 in): Days with 25 mm or more rain	115	16	2007	6
50 mm (1.97 in): Days with 50 mm or more rain	78	6	1973	2
100 mm (3.94 in): Days with 100 mm or more rain	19	2	1973	1
10 cm (3.9 in): Days with 10 cm or more snowfall	79	8	1948	1
25 cm (9.8 in): Days with 25 cm or more snowfall	15	1	1912	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Ellsworth 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Ellsworth Threshold Days by Year (USC00142459)

Key Facts for Ellsworth Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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