Simmesport Threshold Days by Year (USC00168507)

6 fixed thresholds counted per year at Simmesport (USC00168507): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Simmesport Thresholds

Simmesport: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1923 with 58.
Simmesport: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1923 with 31.
Simmesport: days with 50 mm (1.97 in) or more of precipitation in 71 years, most in 1946 with 12.
Simmesport: days with 100 mm (3.94 in) or more of precipitation in 39 years, most in 1935 with 5.
6 fixed thresholds have at least one qualifying day at Simmesport.

Days with 10 mm (0.39 in) or more of precipitation

71 years with a qualifying day

Days per year at Simmesport with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 58 in 1923.

Days with 10 mm (0.39 in) or more of precipitation per year at Simmesport
Year	Days	Decade average
1906	41	44.8
1907	46	44.8
1908	51	44.8
1909	41	44.8
1910	34	38
1911	42	38
1912	46	38
1913	46	38
1914	35	38
1915	34	38
1916	36	38
1917	31	38
1923	58	54
1929	50	54
1930	32	42.1
1931	48	42.1
1932	52	42.1
1933	41	42.1
1934	41	42.1
1935	34	42.1
1936	39	42.1
1937	44	42.1
1938	45	42.1
1939	45	42.1
1940	52	48.8
1941	54	48.8
1942	54	48.8
1943	42	48.8
1944	52	48.8
1945	57	48.8
1946	54	48.8
1947	41	48.8
1948	41	48.8
1949	41	48.8
1950	55	40
1951	25	40
1952	37	40
1953	43	40
1954	28	40
1955	32	40
1956	41	40
1957	44	40
1958	41	40
1959	54	40
1960	45	42.4
1961	54	42.4
1962	37	42.4
1963	35	42.4
1964	48	42.4
1965	35	42.4
1966	46	42.4
1967	48	42.4
1968	42	42.4
1969	34	42.4
1970	40	47.5
1971	51	47.5
1972	43	47.5
1973	51	47.5
1974	54	47.5
1975	58	47.5
1976	38	47.5
1977	45	47.5
1978	40	47.5
1979	55	47.5
1980	35	42.3
1981	38	42.3
1982	44	42.3
1983	53	42.3
1984	45	42.3
1985	43	42.3
1986	38	42.3

For each year, a bar from the first to the last day at Simmesport meeting 10 mm (0.39 in).

First to last qualifying date each year at Simmesport
Year	First date	Last date
1906	1906-01-03	1906-12-30
1907	1907-01-20	1907-12-12
1908	1908-01-05	1908-12-22
1909	1909-01-03	1909-12-25
1910	1910-01-06	1910-12-30
1911	1911-01-02	1911-12-31
1912	1912-01-02	1912-12-30
1913	1913-01-18	1913-12-29
1914	1914-01-24	1914-12-29
1915	1915-01-11	1915-12-31
1916	1916-01-03	1916-12-28
1917	1917-01-05	1917-12-18
1923	1923-01-03	1923-12-21
1929	1929-01-05	1929-12-22
1930	1930-01-02	1930-12-26
1931	1931-01-05	1931-12-31
1932	1932-01-05	1932-12-31
1933	1933-01-23	1933-12-31
1934	1934-01-04	1934-12-28
1935	1935-01-08	1935-12-29
1936	1936-01-06	1936-12-31
1937	1937-01-02	1937-12-08
1938	1938-01-01	1938-12-26
1939	1939-01-11	1939-12-26
1940	1940-01-05	1940-12-27
1941	1941-01-15	1941-12-26
1942	1942-01-01	1942-12-28
1943	1943-01-08	1943-12-28
1944	1944-01-02	1944-12-28
1945	1945-01-01	1945-12-27
1946	1946-01-05	1946-12-31
1947	1947-01-01	1947-12-15
1948	1948-01-01	1948-12-29
1949	1949-01-05	1949-12-28
1950	1950-01-05	1950-12-29
1951	1951-01-03	1951-12-20
1952	1952-01-22	1952-12-31
1953	1953-01-02	1953-12-29
1954	1954-01-05	1954-12-29
1955	1955-01-01	1955-12-19
1956	1956-01-19	1956-12-23
1957	1957-02-02	1957-12-28
1958	1958-01-01	1958-12-24
1959	1959-01-01	1959-12-17
1960	1960-01-01	1960-12-31
1961	1961-01-07	1961-12-18
1962	1962-01-05	1962-12-29
1963	1963-01-12	1963-12-14
1964	1964-01-04	1964-12-18
1965	1965-01-23	1965-12-19
1966	1966-01-03	1966-12-31
1967	1967-01-14	1967-12-31
1968	1968-01-02	1968-12-31
1969	1969-01-17	1969-12-30
1970	1970-01-06	1970-12-31
1971	1971-01-15	1971-12-31
1972	1972-01-04	1972-12-31
1973	1973-01-02	1973-12-26
1974	1974-01-03	1974-12-25
1975	1975-01-08	1975-12-29
1976	1976-01-26	1976-12-26
1977	1977-01-03	1977-12-30
1978	1978-01-08	1978-12-30
1979	1979-01-01	1979-12-24
1980	1980-01-09	1980-12-10
1981	1981-01-07	1981-12-31
1982	1982-01-07	1982-12-28
1983	1983-01-01	1983-12-28
1984	1984-01-10	1984-12-05
1985	1985-01-01	1985-12-28
1986	1986-01-07	1986-12-23

Every Fixed Threshold

Fixed thresholds at Simmesport
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	71	58	1923	38
25 mm (0.98 in): Days with 25 mm or more rain	71	31	1923	21
50 mm (1.97 in): Days with 50 mm or more rain	71	12	1946	7
100 mm (3.94 in): Days with 100 mm or more rain	39	5	1935	1
200 mm (7.87 in): Days with 200 mm or more rain	4	1	1935	1
10 cm (3.9 in): Days with 10 cm or more snowfall	4	1	1935	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.

Download the Data

Data for Simmesport 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).

Simmesport Threshold Days by Year (USC00168507)

Key Facts for Simmesport Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

Related