Flatonia 4SE Threshold Days by Year

17 fixed thresholds counted per year at Flatonia 4SE (USC00413183): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Flatonia 4SE Thresholds

Flatonia 4SE: days with 10 mm (0.39 in) or more of precipitation in 111 years, most in 1919 with 53.
Flatonia 4SE: days with 25 mm (0.98 in) or more of precipitation in 111 years, most in 1919 with 22.
Flatonia 4SE: days with a maximum temperature at or above 30 C (86 F) in 108 years, most in 1927 with 194.
Flatonia 4SE: days with a maximum temperature at or above 35 C (95 F) in 108 years, most in 1933 with 121.
17 fixed thresholds have at least one qualifying day at Flatonia 4SE.

Days at or above 30 C (86 F)

108 years with a qualifying day

Days per year at Flatonia 4SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 194 in 1927.

Days at or above 30 C (86 F) per year at Flatonia 4SE
Year	Days	Decade average
1908	162	167
1909	172	167
1910	162	156.6
1911	164	156.6
1912	150	156.6
1913	134	156.6
1914	134	156.6
1915	162	156.6
1916	190	156.6
1917	172	156.6
1918	159	156.6
1919	139	156.6
1920	179	168.4
1922	169	168.4
1923	155	168.4
1924	159	168.4
1925	181	168.4
1926	154	168.4
1927	194	168.4
1928	160	168.4
1929	165	168.4
1930	152	165.4
1931	176	165.4
1932	154	165.4
1933	186	165.4
1935	166	165.4
1936	166	165.4
1937	162	165.4
1938	158	165.4
1939	169	165.4
1940	157	147.7
1941	152	147.7
1942	139	147.7
1943	161	147.7
1944	147	147.7
1945	135	147.7
1946	118	147.7
1947	168	147.7
1948	159	147.7
1949	141	147.7
1950	137	146
1951	146	146
1952	137	146
1953	145	146
1954	163	146
1955	180	146
1956	174	146
1957	123	146
1958	121	146
1959	134	146
1960	135	148.4
1961	136	148.4
1962	152	148.4
1963	192	148.4
1965	126	148.4
1966	148	148.4
1967	158	148.4
1968	136	148.4
1969	153	148.4
1970	141	151.4
1971	171	151.4
1972	175	151.4
1974	157	151.4
1975	163	151.4
1976	125	151.4
1977	151	151.4
1978	150	151.4
1979	130	151.4
1980	146	142.3
1981	148	142.3
1982	148	142.3
1983	131	142.3
1984	149	142.3
1985	142	142.3
1986	139	142.3
1987	128	142.3
1988	151	142.3
1989	141	142.3
1990	147	136.2
1991	138	136.2
1992	124	136.2
1993	127	136.2
1994	119	136.2
1995	137	136.2
1996	146	136.2
1997	127	136.2
1998	143	136.2
1999	154	136.2
2000	126	144.4
2001	110	144.4
2002	133	144.4
2003	127	144.4
2004	140	144.4
2005	175	144.4
2006	178	144.4
2007	169	144.4
2008	149	144.4
2009	137	144.4
2010	110	141.8
2011	174	141.8
2012	148	141.8
2013	139	141.8
2014	140	141.8
2015	134	141.8
2016	147	141.8
2017	144	141.8
2018	142	141.8
2019	140	141.8

For each year, a bar from the first to the last day at Flatonia 4SE meeting 30 C (86 F).

First to last qualifying date each year at Flatonia 4SE
Year	First date	Last date
1908	1908-03-15	1908-11-25
1909	1909-02-21	1909-11-22
1910	1910-03-21	1910-11-24
1911	1911-01-30	1911-11-10
1912	1912-04-14	1912-10-27
1913	1913-03-30	1913-10-10
1914	1914-04-15	1914-10-20
1915	1915-03-30	1915-11-25
1916	1916-02-28	1916-11-08
1917	1917-02-21	1917-12-03
1918	1918-01-26	1918-10-21
1919	1919-04-07	1919-11-06
1920	1920-02-23	1920-10-31
1922	1922-04-09	1922-12-24
1923	1923-01-07	1923-10-13
1924	1924-04-14	1924-11-14
1925	1925-03-24	1925-10-24
1926	1926-04-19	1926-10-28
1927	1927-02-22	1927-11-28
1928	1928-03-13	1928-10-29
1929	1929-03-06	1929-10-30
1930	1930-03-06	1930-11-17
1931	1931-04-01	1931-11-21
1932	1932-02-28	1932-10-30
1933	1933-03-09	1933-11-30
1935	1935-03-20	1935-11-10
1936	1936-01-15	1936-11-02
1937	1937-04-15	1937-10-30
1938	1938-03-03	1938-11-16
1939	1939-03-26	1939-12-21
1940	1940-02-27	1940-10-28
1941	1941-05-06	1941-10-26
1942	1942-05-02	1942-11-02
1943	1943-03-17	1943-11-06
1944	1944-04-13	1944-11-01
1945	1945-04-25	1945-10-21
1946	1946-03-29	1946-10-24
1947	1947-04-06	1947-11-10
1948	1948-03-19	1948-11-03
1949	1949-04-13	1949-10-21
1950	1950-03-26	1950-10-30
1951	1951-03-07	1951-10-31
1952	1952-03-21	1952-11-09
1953	1953-03-18	1953-10-21
1954	1954-02-26	1954-10-26
1955	1955-03-10	1955-11-22
1956	1956-03-26	1956-10-29
1957	1957-03-18	1957-10-05
1958	1958-04-22	1958-10-24
1959	1959-03-14	1959-10-26
1960	1960-02-09	1960-10-29
1961	1961-03-28	1961-10-28
1962	1962-02-09	1962-10-27
1963	1963-03-12	1963-11-07
1965	1965-04-03	1965-11-26
1966	1966-03-31	1966-11-22
1967	1967-03-10	1967-11-26
1968	1968-04-27	1968-11-01
1969	1969-04-09	1969-11-12
1970	1970-04-12	1970-10-27
1971	1971-03-11	1971-11-02
1972	1972-03-16	1972-11-06
1974	1974-03-11	1974-10-29
1975	1975-01-26	1975-11-11
1976	1976-03-02	1976-10-10
1977	1977-03-15	1977-10-31
1978	1978-04-03	1978-11-02
1979	1979-04-16	1979-10-29
1980	1980-03-10	1980-11-09
1981	1981-03-30	1981-10-17
1982	1982-02-17	1982-11-01
1983	1983-04-27	1983-10-19
1984	1984-03-27	1984-10-18
1985	1985-04-16	1985-10-14
1986	1986-02-18	1986-10-05
1987	1987-04-10	1987-11-05
1988	1988-04-20	1988-11-14
1989	1989-03-13	1989-11-08
1990	1990-04-29	1990-10-17
1991	1991-03-05	1991-10-29
1992	1992-04-10	1992-10-31
1993	1993-04-25	1993-10-19
1994	1994-04-26	1994-10-22
1995	1995-03-23	1995-11-10
1996	1996-02-20	1996-10-17
1997	1997-04-21	1997-10-31
1998	1998-05-01	1998-10-16
1999	1999-03-02	1999-10-16
2000	2000-03-29	2000-10-16
2001	2001-04-15	2001-10-24
2002	2002-03-30	2002-10-06
2003	2003-04-24	2003-10-24
2004	2004-05-19	2004-10-31
2005	2005-03-13	2005-11-14
2006	2006-03-11	2006-11-11
2007	2007-02-22	2007-10-22
2008	2008-02-26	2008-10-15
2009	2009-02-28	2009-10-16
2010	2010-05-04	2010-09-26
2011	2011-03-23	2011-11-09
2012	2012-04-06	2012-10-26
2013	2013-03-16	2013-11-18
2014	2014-04-28	2014-10-17
2015	2015-05-19	2015-10-22
2016	2016-03-14	2016-11-04
2017	2017-02-09	2017-11-08
2018	2018-05-03	2018-11-08
2019	2019-04-10	2019-10-21

Every Fixed Threshold

Fixed thresholds at Flatonia 4SE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	108	194	1927	140
35 C (95 F): Days	108	121	1933	65
40 C (104 F): Days	37	15	1967	1
90 F (32.2 C): Days	108	161	1933	112
100 F (37.8 C): Days	93	62	1918	17
110 F (43.3 C): Days	2	2	1917	1
0 C (32 F): Ice days (max	40	5	1983	2
0 C (32 F): Frost days (min	108	35	1978	11
-10 C (14 F): Days with min	16	3	1983	3
20 C (68 F): Tropical nights (min	108	173	2015	136
25 C (77 F): Days with min	93	93	2014	21
10 mm (0.39 in): Days with 10 mm or more rain	111	53	1919	19
25 mm (0.98 in): Days with 25 mm or more rain	111	22	1919	11
50 mm (1.97 in): Days with 50 mm or more rain	103	9	2002	1
100 mm (3.94 in): Days with 100 mm or more rain	36	3	1936	2
200 mm (7.87 in): Days with 200 mm or more rain	6	1	1940	1
10 cm (3.9 in): Days with 10 cm or more snowfall	3	1	1929	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Flatonia 4SE 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).

Flatonia 4SE Threshold Days by Year

Key Facts for Flatonia 4SE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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