Le Mars Threshold Days by Year (USC00134735)

20 fixed thresholds counted per year at Le Mars (USC00134735): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Le Mars Thresholds

Le Mars: days with a maximum temperature at or above 30 C (86 F) in 128 years, most in 1980 with 91.
Le Mars: days with a maximum temperature at or below 0 C (32 F) in 128 years, most in 1978 with 89.
Le Mars: days with a maximum temperature at or above 90 F (32.2 C) in 127 years, most in 1936 with 67.
Le Mars: nights with a minimum temperature at or below 0 C (32 F) in 127 years, most in 2013 with 187.
20 fixed thresholds have at least one qualifying day at Le Mars.

Days at or above 30 C (86 F)

128 years with a qualifying day

Days per year at Le Mars with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 1980.

Days at or above 30 C (86 F) per year at Le Mars
Year	Days	Decade average
1897	58	48.3
1898	48	48.3
1899	39	48.3
1900	58	32.9
1901	61	32.9
1902	19	32.9
1903	17	32.9
1905	32	32.9
1906	33	32.9
1907	23	32.9
1908	28	32.9
1909	25	32.9
1910	21	36.4
1911	44	36.4
1912	24	36.4
1913	59	36.4
1914	48	36.4
1915	1	36.4
1916	46	36.4
1917	27	36.4
1918	58	36.4
1920	42	44.1
1921	61	44.1
1922	50	44.1
1923	36	44.1
1924	22	44.1
1925	58	44.1
1926	47	44.1
1927	46	44.1
1928	37	44.1
1929	42	44.1
1930	54	71.4
1931	84	71.4
1932	56	71.4
1933	84	71.4
1934	85	71.4
1935	59	71.4
1936	84	71.4
1937	67	71.4
1938	66	71.4
1939	75	71.4
1940	47	54.1
1941	67	54.1
1942	51	54.1
1943	57	54.1
1944	53	54.1
1945	39	54.1
1946	44	54.1
1947	57	54.1
1948	67	54.1
1949	59	54.1
1950	29	56.9
1951	26	56.9
1952	58	56.9
1953	58	56.9
1954	58	56.9
1955	83	56.9
1956	87	56.9
1957	51	56.9
1958	56	56.9
1959	63	56.9
1960	42	48.2
1961	47	48.2
1962	40	48.2
1963	67	48.2
1964	61	48.2
1965	44	48.2
1966	51	48.2
1967	39	48.2
1968	51	48.2
1969	40	48.2
1970	75	67.6
1971	56	67.6
1972	52	67.6
1973	73	67.6
1974	59	67.6
1975	72	67.6
1976	88	67.6
1977	59	67.6
1978	75	67.6
1979	67	67.6
1980	91	57.7
1981	68	57.7
1982	55	57.7
1983	81	57.7
1984	36	57.7
1985	40	57.7
1986	38	57.7
1987	60	57.7
1988	68	57.7
1989	40	57.7
1990	50	37
1991	43	37
1992	11	37
1993	23	37
1994	38	37
1995	48	37
1996	19	37
1997	48	37
1998	52	37
1999	38	37
2000	55	42.1
2001	51	42.1
2002	57	42.1
2003	40	42.1
2004	23	42.1
2005	53	42.1
2006	52	42.1
2007	58	42.1
2008	17	42.1
2009	15	42.1
2010	36	40.5
2011	48	40.5
2012	78	40.5
2013	43	40.5
2014	16	40.5
2015	24	40.5
2016	45	40.5
2017	44	40.5
2018	37	40.5
2019	34	40.5
2020	59	55.9
2021	62	55.9
2022	67	55.9
2023	52	55.9
2024	34	55.9
2025	57	55.9
2026	60	55.9

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

First to last qualifying date each year at Le Mars
Year	First date	Last date
1897	1897-06-10	1897-10-03
1898	1898-05-24	1898-09-28
1899	1899-05-11	1899-10-12
1900	1900-05-11	1900-09-09
1901	1901-04-26	1901-09-06
1902	1902-05-18	1902-08-02
1903	1903-06-17	1903-08-24
1905	1905-06-01	1905-08-29
1906	1906-04-24	1906-09-10
1907	1907-05-12	1907-09-18
1908	1908-06-21	1908-09-23
1909	1909-05-05	1909-08-28
1910	1910-04-28	1910-08-22
1911	1911-05-18	1911-09-02
1912	1912-06-25	1912-09-08
1913	1913-05-28	1913-09-07
1914	1914-05-26	1914-09-06
1915	1915-05-12	1915-05-12
1916	1916-05-06	1916-10-07
1917	1917-05-17	1917-08-26
1918	1918-05-03	1918-09-22
1920	1920-06-07	1920-10-10
1921	1921-05-21	1921-09-23
1922	1922-06-04	1922-10-06
1923	1923-06-02	1923-09-05
1924	1924-04-14	1924-08-30
1925	1925-05-20	1925-09-19
1926	1926-04-29	1926-09-17
1927	1927-04-26	1927-09-17
1928	1928-04-02	1928-10-11
1929	1929-04-04	1929-09-22
1930	1930-05-21	1930-10-10
1931	1931-04-08	1931-09-20
1932	1932-05-13	1932-10-02
1933	1933-05-16	1933-09-25
1934	1934-04-30	1934-10-12
1935	1935-06-12	1935-09-24
1936	1936-05-05	1936-09-22
1937	1937-05-29	1937-10-29
1938	1938-06-05	1938-10-16
1939	1939-05-04	1939-09-22
1940	1940-05-12	1940-09-22
1941	1941-05-14	1941-09-20
1942	1942-04-29	1942-09-16
1943	1943-04-24	1943-10-09
1944	1944-05-14	1944-09-17
1945	1945-05-25	1945-10-18
1946	1946-06-06	1946-09-05
1947	1947-06-09	1947-10-21
1948	1948-04-18	1948-09-19
1949	1949-04-25	1949-09-20
1950	1950-05-22	1950-10-30
1951	1951-06-16	1951-10-01
1952	1952-05-02	1952-09-30
1953	1953-05-25	1953-10-02
1954	1954-04-14	1954-09-27
1955	1955-05-01	1955-09-18
1956	1956-05-18	1956-10-12
1957	1957-06-04	1957-09-30
1958	1958-05-10	1958-10-19
1959	1959-05-01	1959-09-09
1960	1960-04-21	1960-10-11
1961	1961-05-12	1961-09-10
1962	1962-04-21	1962-09-12
1963	1963-05-07	1963-10-07
1964	1964-04-16	1964-09-09
1965	1965-04-29	1965-08-26
1966	1966-05-04	1966-08-31
1967	1967-04-16	1967-10-02
1968	1968-03-30	1968-08-24
1969	1969-05-15	1969-10-03
1970	1970-04-27	1970-09-21
1971	1971-05-13	1971-09-13
1972	1972-05-16	1972-09-20
1973	1973-05-18	1973-09-10
1974	1974-05-20	1974-09-26
1975	1975-05-05	1975-10-14
1976	1976-05-19	1976-10-03
1977	1977-04-09	1977-09-08
1978	1978-03-31	1978-10-20
1979	1979-05-17	1979-09-25
1980	1980-04-20	1980-10-09
1981	1981-04-25	1981-09-30
1982	1982-05-03	1982-09-11
1983	1983-05-27	1983-09-27
1984	1984-06-22	1984-09-20
1985	1985-04-17	1985-09-08
1986	1986-03-29	1986-08-26
1987	1987-04-19	1987-09-26
1988	1988-04-07	1988-09-18
1989	1989-04-20	1989-09-01
1990	1990-04-23	1990-10-06
1991	1991-04-06	1991-09-14
1992	1992-05-01	1992-10-03
1993	1993-06-11	1993-10-08
1994	1994-04-19	1994-09-15
1995	1995-06-07	1995-10-13
1996	1996-05-18	1996-08-09
1997	1997-05-16	1997-10-06
1998	1998-05-04	1998-09-29
1999	1999-05-27	1999-09-24
2000	2000-05-04	2000-10-02
2001	2001-04-28	2001-10-02
2002	2002-04-15	2002-10-01
2003	2003-04-15	2003-10-20
2004	2004-04-17	2004-09-20
2005	2005-05-25	2005-10-05
2006	2006-04-14	2006-10-04
2007	2007-04-30	2007-10-07
2008	2008-06-15	2008-08-04
2009	2009-04-24	2009-08-14
2010	2010-05-23	2010-10-09
2011	2011-05-10	2011-10-06
2012	2012-04-01	2012-09-12
2013	2013-05-14	2013-09-27
2014	2014-05-08	2014-09-20
2015	2015-05-04	2015-10-12
2016	2016-05-07	2016-09-25
2017	2017-05-09	2017-09-25
2018	2018-05-01	2018-10-04
2019	2019-05-16	2019-09-30
2020	2020-05-02	2020-09-23
2021	2021-05-02	2021-09-29
2022	2022-05-10	2022-09-21
2023	2023-04-12	2023-10-03
2024	2024-05-18	2024-09-30
2025	2025-03-29	2025-10-05
2026	2026-03-22	2026-10-13

Every Fixed Threshold

Fixed thresholds at Le Mars
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	128	91	1980	60
35 C (95 F): Days	109	42	1936	6
40 C (104 F): Days	19	14	1936	1
90 F (32.2 C): Days	127	67	1936	29
100 F (37.8 C): Days	43	29	1936	2
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	128	89	1978	30
0 C (32 F): Frost days (min	127	187	2013	94
-10 C (14 F): Days with min	127	85	1960	32
-20 C (-4 F): Days with min	127	40	1936	9
-30 C (-22 F): Days with min	54	8	1905	2
20 C (68 F): Tropical nights (min	127	46	1983	26
25 C (77 F): Days with min	32	6	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	120	37	2016	17
25 mm (0.98 in): Days with 25 mm or more rain	120	14	1905	8
50 mm (1.97 in): Days with 50 mm or more rain	76	5	1985	4
100 mm (3.94 in): Days with 100 mm or more rain	9	2	1900	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1985	1
10 cm (3.9 in): Days with 10 cm or more snowfall	81	6	1993	1
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	2016	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Le Mars 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).

Le Mars Threshold Days by Year (USC00134735)

Key Facts for Le Mars Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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