Whitemark Threshold Days by Year

4 fixed thresholds counted per year at Whitemark (ASN00099008): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Whitemark Thresholds

Whitemark: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 1956 with 35.
Whitemark: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1916 with 10.
Whitemark: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1916 with 3.
Whitemark: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1936 with 1.
4 fixed thresholds have at least one qualifying day at Whitemark.

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

60 years with a qualifying day

Days per year at Whitemark with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1956.

Days with 10 mm (0.39 in) or more of precipitation per year at Whitemark
Year	Days	Decade average
1911	24	19.8
1912	17	19.8
1913	16	19.8
1914	13	19.8
1915	14	19.8
1916	27	19.8
1917	32	19.8
1918	21	19.8
1919	14	19.8
1920	22	21.2
1921	20	21.2
1922	25	21.2
1923	23	21.2
1924	21	21.2
1925	18	21.2
1926	21	21.2
1927	15	21.2
1928	24	21.2
1929	23	21.2
1930	21	20.9
1931	22	20.9
1932	18	20.9
1933	17	20.9
1934	24	20.9
1935	25	20.9
1936	23	20.9
1937	14	20.9
1938	19	20.9
1939	26	20.9
1940	16	17.4
1941	12	17.4
1942	17	17.4
1943	8	17.4
1944	13	17.4
1945	13	17.4
1946	22	17.4
1947	30	17.4
1948	17	17.4
1949	26	17.4
1950	22	24.1
1951	16	24.1
1952	33	24.1
1953	23	24.1
1954	18	24.1
1955	31	24.1
1956	35	24.1
1957	16	24.1
1958	25	24.1
1959	22	24.1
1960	22	20.9
1961	22	20.9
1962	24	20.9
1963	23	20.9
1964	26	20.9
1965	16	20.9
1966	15	20.9
1967	18	20.9
1968	18	20.9
1969	25	20.9
1970	20	20

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

First to last qualifying date each year at Whitemark
Year	First date	Last date
1911	1911-02-15	1911-12-26
1912	1912-03-29	1912-12-04
1913	1913-03-05	1913-12-25
1914	1914-01-27	1914-12-26
1915	1915-02-21	1915-09-20
1916	1916-01-18	1916-12-09
1917	1917-01-22	1917-12-30
1918	1918-01-12	1918-08-08
1919	1919-01-07	1919-12-28
1920	1920-01-03	1920-12-14
1921	1921-01-02	1921-12-30
1922	1922-01-30	1922-12-31
1923	1923-02-27	1923-12-05
1924	1924-01-11	1924-11-26
1925	1925-01-13	1925-11-18
1926	1926-01-05	1926-11-18
1927	1927-01-06	1927-12-05
1928	1928-01-30	1928-12-23
1929	1929-01-30	1929-12-28
1930	1930-02-21	1930-12-25
1931	1931-01-26	1931-11-16
1932	1932-03-07	1932-12-07
1933	1933-01-25	1933-12-15
1934	1934-01-08	1934-12-16
1935	1935-01-05	1935-12-27
1936	1936-02-21	1936-12-13
1937	1937-01-25	1937-12-27
1938	1938-02-05	1938-12-10
1939	1939-02-18	1939-12-06
1940	1940-01-19	1940-12-28
1941	1941-01-26	1941-10-06
1942	1942-01-19	1942-12-20
1943	1943-04-07	1943-11-18
1944	1944-03-10	1944-12-19
1945	1945-01-31	1945-11-11
1946	1946-01-20	1946-11-09
1947	1947-03-05	1947-12-21
1948	1948-01-12	1948-11-10
1949	1949-01-01	1949-12-28
1950	1950-01-18	1950-12-21
1951	1951-02-18	1951-12-10
1952	1952-01-08	1952-12-27
1953	1953-01-06	1953-12-05
1954	1954-01-28	1954-12-12
1955	1955-01-29	1955-12-31
1956	1956-01-11	1956-12-29
1957	1957-01-19	1957-12-26
1958	1958-02-12	1958-12-12
1959	1959-01-26	1959-12-26
1960	1960-02-14	1960-12-03
1961	1961-02-09	1961-12-16
1962	1962-01-20	1962-12-04
1963	1963-01-01	1963-10-25
1964	1964-02-11	1964-12-24
1965	1965-01-19	1965-12-02
1966	1966-02-24	1966-12-19
1967	1967-01-13	1967-12-31
1968	1968-03-25	1968-12-24
1969	1969-01-15	1969-12-30
1970	1970-01-02	1970-12-29

Every Fixed Threshold

Fixed thresholds at Whitemark
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	60	35	1956	20
25 mm (0.98 in): Days with 25 mm or more rain	58	10	1916	6
50 mm (1.97 in): Days with 50 mm or more rain	26	3	1916	3
100 mm (3.94 in): Days with 100 mm or more rain	5	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 1911.

Download the Data

Data for Whitemark 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).

Whitemark Threshold Days by Year

Key Facts for Whitemark Thresholds

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

Every Fixed Threshold

Download the Data

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