Napoleon Threshold Days by Year

21 fixed thresholds counted per year at Napoleon (USC00326255): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Napoleon Thresholds

Napoleon: days with 10 mm (0.39 in) or more of precipitation in 129 years, most in 1995 with 24.
Napoleon: days with a maximum temperature at or above 30 C (86 F) in 123 years, most in 1936 with 84.
Napoleon: days with a maximum temperature at or above 90 F (32.2 C) in 123 years, most in 1936 with 63.
Napoleon: days with a maximum temperature at or below 0 C (32 F) in 123 years, most in 1950 with 125.
21 fixed thresholds have at least one qualifying day at Napoleon.

Days at or above 30 C (86 F)

123 years with a qualifying day

Days per year at Napoleon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 84 in 1936.

Days at or above 30 C (86 F) per year at Napoleon
Year	Days	Decade average
1893	46	33.9
1894	53	33.9
1895	31	33.9
1896	24	33.9
1897	28	33.9
1898	33	33.9
1899	22	33.9
1900	38	32.5
1901	38	32.5
1902	36	32.5
1903	35	32.5
1904	25	32.5
1905	24	32.5
1906	37	32.5
1907	19	32.5
1908	42	32.5
1909	31	32.5
1910	46	37.2
1911	41	37.2
1912	21	37.2
1913	37	37.2
1914	40	37.2
1915	24	37.2
1916	40	37.2
1917	40	37.2
1918	31	37.2
1919	52	37.2
1920	38	33.9
1921	54	33.9
1922	42	33.9
1923	20	33.9
1924	14	33.9
1925	37	33.9
1926	42	33.9
1927	20	33.9
1928	19	33.9
1929	53	33.9
1930	50	55
1931	49	55
1932	40	55
1933	60	55
1934	71	55
1935	39	55
1936	84	55
1937	54	55
1938	42	55
1939	61	55
1940	48	29.6
1941	39	29.6
1942	10	29.6
1943	29	29.6
1944	26	29.6
1945	28	29.6
1946	21	29.6
1947	26	29.6
1948	38	29.6
1949	31	29.6
1950	23	35
1951	11	35
1952	47	35
1953	33	35
1954	30	35
1955	47	35
1956	25	35
1957	35	35
1958	37	35
1959	62	35
1960	41	33.8
1961	57	33.8
1962	22	33.8
1963	34	33.8
1964	37	33.8
1965	12	33.8
1966	38	33.8
1967	39	33.8
1968	22	33.8
1969	36	33.8
1970	52	33.1
1972	36	33.1
1973	29	33.1
1974	32	33.1
1975	27	33.1
1976	55	33.1
1977	23	33.1
1978	31	33.1
1979	13	33.1
1980	40	39.1
1981	24	39.1
1982	32	39.1
1983	48	39.1
1984	38	39.1
1985	25	39.1
1987	42	39.1
1988	59	39.1
1989	44	39.1
1990	33	23.4
1991	36	23.4
1992	18	23.4
1993	7	23.4
1994	19	23.4
1995	23	23.4
1996	19	23.4
1997	31	23.4
1998	29	23.4
1999	19	23.4
2000	28	28.7
2001	36	28.7
2002	44	28.7
2003	35	28.7
2004	16	28.7
2005	27	28.7
2006	39	28.7
2007	33	28.7
2008	17	28.7
2009	12	28.7
2010	21	26.2
2011	22	26.2
2012	44	26.2
2013	29	26.2
2014	9	26.2
2015	32	26.2
2024	13	17
2026	21	17

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

First to last qualifying date each year at Napoleon
Year	First date	Last date
1893	1893-05-18	1893-09-20
1894	1894-06-07	1894-09-06
1895	1895-06-23	1895-09-19
1896	1896-06-15	1896-09-07
1897	1897-05-04	1897-10-01
1898	1898-06-16	1898-09-27
1899	1899-06-17	1899-09-01
1900	1900-04-20	1900-09-01
1901	1901-04-30	1901-09-03
1902	1902-05-28	1902-09-25
1903	1903-05-16	1903-08-31
1904	1904-06-16	1904-09-27
1905	1905-06-03	1905-09-29
1906	1906-04-24	1906-10-12
1907	1907-06-21	1907-09-11
1908	1908-04-13	1908-09-24
1909	1909-06-18	1909-10-06
1910	1910-03-23	1910-10-10
1911	1911-04-17	1911-09-01
1912	1912-06-23	1912-10-17
1913	1913-04-15	1913-09-09
1914	1914-06-10	1914-10-17
1915	1915-04-14	1915-09-05
1916	1916-05-06	1916-09-19
1917	1917-05-16	1917-09-23
1918	1918-05-04	1918-09-22
1919	1919-05-27	1919-09-16
1920	1920-06-08	1920-10-07
1921	1921-04-03	1921-09-02
1922	1922-06-04	1922-10-03
1923	1923-06-02	1923-09-21
1924	1924-07-10	1924-09-03
1925	1925-05-19	1925-09-04
1926	1926-04-15	1926-09-16
1927	1927-06-27	1927-09-13
1928	1928-05-07	1928-09-07
1929	1929-05-25	1929-09-22
1930	1930-05-03	1930-09-11
1931	1931-05-15	1931-09-29
1932	1932-05-13	1932-09-14
1933	1933-05-17	1933-09-18
1934	1934-04-28	1934-10-12
1935	1935-06-13	1935-09-23
1936	1936-05-05	1936-10-08
1937	1937-05-27	1937-09-21
1938	1938-04-30	1938-10-03
1939	1939-04-30	1939-09-21
1940	1940-05-11	1940-09-17
1941	1941-05-13	1941-09-19
1942	1942-04-14	1942-09-08
1943	1943-05-28	1943-09-27
1944	1944-05-13	1944-08-19
1945	1945-06-21	1945-10-16
1946	1946-06-06	1946-09-14
1947	1947-07-03	1947-09-07
1948	1948-05-18	1948-09-16
1949	1949-06-11	1949-10-05
1950	1950-06-05	1950-09-07
1951	1951-07-14	1951-08-06
1952	1952-04-26	1952-09-27
1953	1953-06-12	1953-10-01
1954	1954-06-13	1954-09-01
1955	1955-05-02	1955-10-10
1956	1956-06-08	1956-10-12
1957	1957-06-05	1957-08-21
1958	1958-05-11	1958-10-13
1959	1959-05-01	1959-09-13
1960	1960-05-13	1960-10-04
1961	1961-06-04	1961-09-18
1962	1962-04-24	1962-09-07
1963	1963-05-07	1963-10-04
1964	1964-05-20	1964-09-17
1965	1965-07-17	1965-08-16
1966	1966-05-21	1966-09-12
1967	1967-05-22	1967-09-11
1968	1968-04-30	1968-08-28
1969	1969-05-14	1969-09-14
1970	1970-05-17	1970-09-20
1972	1972-05-16	1972-09-20
1973	1973-06-03	1973-09-01
1974	1974-06-04	1974-09-26
1975	1975-05-17	1975-10-08
1976	1976-06-02	1976-10-01
1977	1977-04-10	1977-09-06
1978	1978-06-16	1978-09-11
1979	1979-06-12	1979-09-27
1980	1980-04-21	1980-10-01
1981	1981-06-28	1981-09-20
1982	1982-05-04	1982-09-11
1983	1983-06-22	1983-09-28
1984	1984-05-17	1984-09-22
1985	1985-04-30	1985-08-09
1987	1987-04-19	1987-09-16
1988	1988-05-27	1988-08-25
1989	1989-06-20	1989-10-01
1990	1990-04-23	1990-09-26
1991	1991-05-15	1991-09-08
1992	1992-05-01	1992-10-02
1993	1993-06-21	1993-10-07
1994	1994-05-18	1994-09-11
1995	1995-06-15	1995-09-05
1996	1996-06-10	1996-09-06
1997	1997-05-18	1997-10-03
1998	1998-06-26	1998-09-19
1999	1999-05-30	1999-09-01
2000	2000-05-05	2000-09-18
2001	2001-04-29	2001-09-06
2002	2002-05-29	2002-09-18
2003	2003-04-14	2003-10-08
2004	2004-07-01	2004-09-20
2005	2005-06-20	2005-10-02
2006	2006-05-19	2006-09-15
2007	2007-05-14	2007-09-30
2008	2008-07-02	2008-09-20
2009	2009-06-26	2009-09-19
2010	2010-05-29	2010-08-22
2011	2011-06-07	2011-10-03
2012	2012-04-25	2012-09-16
2013	2013-05-14	2013-09-23
2014	2014-05-24	2014-09-26
2015	2015-06-09	2015-10-12
2024	2024-06-13	2024-09-30
2026	2026-04-23	2026-08-07

Every Fixed Threshold

Fixed thresholds at Napoleon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	123	84	1936	21
35 C (95 F): Days	111	42	1936	2
40 C (104 F): Days	33	16	1936	3
45 C (113 F): Days	1	3	1936	3
90 F (32.2 C): Days	123	63	1936	8
100 F (37.8 C): Days	70	28	1936	1
110 F (43.3 C): Days	4	6	1936	6
0 C (32 F): Ice days (max	123	125	1950	43
0 C (32 F): Frost days (min	117	233	1907	117
-10 C (14 F): Days with min	117	131	1907	40
-20 C (-4 F): Days with min	117	72	1916	18
-30 C (-22 F): Days with min	111	33	1936	2
-40 C (-40 F): Days with min	18	5	1936	2
20 C (68 F): Tropical nights (min	91	15	1936	2
25 C (77 F): Days with min	2	4	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	129	24	1995	11
25 mm (0.98 in): Days with 25 mm or more rain	123	6	1900	3
50 mm (1.97 in): Days with 50 mm or more rain	51	3	1900	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1932	1
10 cm (3.9 in): Days with 10 cm or more snowfall	97	10	1996	2
25 cm (9.8 in): Days with 25 cm or more snowfall	19	1	1917	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Napoleon 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Napoleon Threshold Days by Year

Key Facts for Napoleon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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