Palmyra Threshold Days by Year

4 fixed thresholds counted per year at Palmyra (SF004683180): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Palmyra Thresholds

Palmyra: days with 10 mm (0.39 in) or more of precipitation in 83 years, most in 1950 with 31.
Palmyra: days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1950 with 12.
Palmyra: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 1944 with 3.
Palmyra: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1936 with 1.
4 fixed thresholds have at least one qualifying day at Palmyra.

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

83 years with a qualifying day

Days per year at Palmyra with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Palmyra
Year	Days	Decade average
1914	14	12.3
1915	8	12.3
1916	11	12.3
1917	10	12.3
1918	20	12.3
1919	11	12.3
1920	14	12.2
1921	15	12.2
1922	5	12.2
1923	13	12.2
1924	12	12.2
1925	16	12.2
1926	12	12.2
1927	13	12.2
1928	13	12.2
1929	9	12.2
1930	11	13.9
1931	14	13.9
1932	16	13.9
1933	10	13.9
1934	23	13.9
1935	12	13.9
1936	18	13.9
1937	13	13.9
1938	9	13.9
1939	13	13.9
1940	15	15.2
1941	11	15.2
1942	16	15.2
1943	23	15.2
1944	16	15.2
1945	13	15.2
1946	14	15.2
1947	18	15.2
1948	15	15.2
1949	11	15.2
1950	31	16.6
1951	15	16.6
1952	10	16.6
1953	14	16.6
1954	10	16.6
1955	15	16.6
1956	17	16.6
1957	22	16.6
1958	19	16.6
1959	13	16.6
1960	9	14.4
1961	20	14.4
1962	11	14.4
1963	24	14.4
1964	9	14.4
1965	8	14.4
1966	12	14.4
1967	23	14.4
1968	14	14.4
1969	14	14.4
1970	10	19.7
1971	17	19.7
1972	17	19.7
1973	22	19.7
1974	22	19.7
1975	24	19.7
1976	29	19.7
1977	22	19.7
1978	17	19.7
1979	17	19.7
1980	10	13.4
1981	16	13.4
1982	14	13.4
1983	12	13.4
1984	9	13.4
1985	11	13.4
1986	9	13.4
1987	11	13.4
1988	26	13.4
1989	16	13.4
1990	14	15.6
1991	24	15.6
1992	8	15.6
1993	15	15.6
1994	10	15.6
1995	19	15.6
1996	19	15.6

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

First to last qualifying date each year at Palmyra
Year	First date	Last date
1914	1914-01-11	1914-12-14
1915	1915-01-08	1915-12-27
1916	1916-01-04	1916-12-14
1917	1917-01-25	1917-12-09
1918	1918-01-01	1918-12-30
1919	1919-01-02	1919-11-24
1920	1920-01-14	1920-10-25
1921	1921-01-01	1921-12-04
1922	1922-01-06	1922-05-29
1923	1923-01-12	1923-11-18
1924	1924-01-23	1924-12-23
1925	1925-01-08	1925-12-06
1926	1926-01-30	1926-12-20
1927	1927-01-26	1927-12-27
1928	1928-01-01	1928-12-24
1929	1929-01-16	1929-12-18
1930	1930-01-16	1930-12-15
1931	1931-01-01	1931-11-07
1932	1932-01-29	1932-12-30
1933	1933-01-13	1933-12-28
1934	1934-01-03	1934-12-10
1935	1935-01-12	1935-12-14
1936	1936-01-08	1936-12-26
1937	1937-01-27	1937-12-14
1938	1938-01-21	1938-12-17
1939	1939-01-29	1939-12-14
1940	1940-01-17	1940-12-24
1941	1941-01-13	1941-10-16
1942	1942-01-24	1942-12-21
1943	1943-01-12	1943-12-31
1944	1944-01-26	1944-11-15
1945	1945-01-06	1945-12-29
1946	1946-01-18	1946-11-26
1947	1947-01-11	1947-12-30
1948	1948-01-21	1948-11-03
1949	1949-01-30	1949-12-18
1950	1950-01-08	1950-12-31
1951	1951-01-18	1951-12-01
1952	1952-01-22	1952-12-30
1953	1953-02-01	1953-12-19
1954	1954-01-28	1954-12-27
1955	1955-01-25	1955-12-27
1956	1956-01-25	1956-12-22
1957	1957-01-11	1957-12-31
1958	1958-01-09	1958-12-31
1959	1959-01-07	1959-12-16
1960	1960-01-23	1960-12-29
1961	1961-01-28	1961-12-16
1962	1962-02-04	1962-12-12
1963	1963-01-09	1963-12-08
1964	1964-01-18	1964-12-13
1965	1965-01-08	1965-11-29
1966	1966-01-18	1966-12-15
1967	1967-01-03	1967-11-30
1968	1968-03-03	1968-12-07
1969	1969-01-26	1969-12-07
1970	1970-01-16	1970-12-25
1971	1971-01-03	1971-12-18
1972	1972-01-03	1972-12-13
1973	1973-01-01	1973-12-31
1974	1974-01-17	1974-12-27
1975	1975-01-13	1975-12-17
1976	1976-01-01	1976-12-03
1977	1977-01-10	1977-11-30
1978	1978-01-03	1978-12-11
1979	1979-01-09	1979-12-12
1980	1980-03-18	1980-12-14
1981	1981-01-04	1981-12-13
1982	1982-03-19	1982-12-04
1983	1983-01-08	1983-12-24
1984	1984-03-20	1984-11-27
1985	1985-01-14	1985-12-14
1986	1986-01-17	1986-11-28
1987	1987-01-14	1987-12-22
1988	1988-01-09	1988-12-28
1989	1989-02-02	1989-11-13
1990	1990-02-11	1990-12-27
1991	1991-01-06	1991-12-31
1992	1992-02-17	1992-12-21
1993	1993-02-07	1993-12-31
1994	1994-01-09	1994-11-01
1995	1995-01-10	1995-12-18
1996	1996-01-03	1996-12-28

Every Fixed Threshold

Fixed thresholds at Palmyra
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	83	31	1950	19
25 mm (0.98 in): Days with 25 mm or more rain	79	12	1950	9
50 mm (1.97 in): Days with 50 mm or more rain	34	3	1944	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1936	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

Data for Palmyra 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Palmyra Threshold Days by Year

Key Facts for Palmyra Thresholds

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

Every Fixed Threshold

Download the Data

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