Molesworth Threshold Days by Year (ASN00088045)

4 fixed thresholds counted per year at Molesworth (ASN00088045): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Molesworth Thresholds

Molesworth: days with 10 mm (0.39 in) or more of precipitation in 66 years, most in 1956 with 34.
Molesworth: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1906 with 8.
Molesworth: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1918 with 3.
Molesworth: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1950 with 1.
4 fixed thresholds have at least one qualifying day at Molesworth.

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

66 years with a qualifying day

Days per year at Molesworth with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1956.

Days with 10 mm (0.39 in) or more of precipitation per year at Molesworth
Year	Days	Decade average
1904	20	19
1905	21	19
1906	22	19
1907	11	19
1908	17	19
1909	23	19
1910	18	20.1
1911	21	20.1
1912	19	20.1
1913	15	20.1
1914	12	20.1
1915	21	20.1
1916	27	20.1
1917	31	20.1
1918	24	20.1
1919	13	20.1
1920	23	19.4
1921	20	19.4
1922	14	19.4
1923	19	19.4
1924	29	19.4
1925	18	19.4
1927	11	19.4
1928	25	19.4
1929	16	19.4
1930	21	20.3
1931	26	20.3
1932	25	20.3
1933	19	20.3
1934	21	20.3
1935	22	20.3
1936	22	20.3
1937	12	20.3
1938	9	20.3
1939	26	20.3
1940	16	17.8
1941	19	17.8
1942	22	17.8
1943	13	17.8
1944	12	17.8
1945	20	17.8
1946	19	17.8
1947	22	17.8
1948	15	17.8
1949	20	17.8
1950	22	22.6
1951	25	22.6
1952	29	22.6
1953	19	22.6
1954	22	22.6
1955	20	22.6
1956	34	22.6
1957	16	22.6
1958	21	22.6
1959	18	22.6
1960	31	19.8
1961	16	19.8
1962	18	19.8
1963	14	19.8
1964	28	19.8
1965	14	19.8
1966	28	19.8
1967	12	19.8
1968	17	19.8
1969	20	19.8
1970	24	24

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

First to last qualifying date each year at Molesworth
Year	First date	Last date
1904	1904-01-03	1904-11-02
1905	1905-01-03	1905-12-04
1906	1906-03-01	1906-12-18
1907	1907-01-26	1907-12-28
1908	1908-01-10	1908-12-22
1909	1909-01-04	1909-12-01
1910	1910-01-15	1910-12-23
1911	1911-01-14	1911-12-12
1912	1912-01-05	1912-12-06
1913	1913-01-03	1913-12-31
1914	1914-01-26	1914-12-22
1915	1915-01-31	1915-11-21
1916	1916-01-29	1916-12-12
1917	1917-01-12	1917-12-31
1918	1918-01-14	1918-12-24
1919	1919-02-18	1919-12-25
1920	1920-05-11	1920-12-16
1921	1921-01-02	1921-11-15
1922	1922-02-22	1922-12-31
1923	1923-03-20	1923-12-26
1924	1924-01-03	1924-12-26
1925	1925-01-13	1925-11-18
1927	1927-05-17	1927-12-19
1928	1928-01-18	1928-12-23
1929	1929-01-26	1929-12-28
1930	1930-02-21	1930-12-27
1931	1931-01-25	1931-11-21
1932	1932-02-10	1932-12-16
1933	1933-01-27	1933-12-15
1934	1934-01-06	1934-12-01
1935	1935-01-05	1935-12-21
1936	1936-01-04	1936-12-29
1937	1937-01-01	1937-10-18
1938	1938-01-16	1938-06-28
1939	1939-02-17	1939-11-04
1940	1940-01-22	1940-12-08
1941	1941-01-04	1941-12-06
1942	1942-01-20	1942-11-27
1943	1943-01-17	1943-11-17
1944	1944-03-10	1944-10-18
1945	1945-01-14	1945-11-17
1946	1946-01-17	1946-12-29
1947	1947-02-04	1947-12-21
1948	1948-02-14	1948-12-29
1949	1949-02-21	1949-12-21
1950	1950-02-01	1950-12-21
1951	1951-01-05	1951-12-10
1952	1952-01-04	1952-12-12
1953	1953-01-15	1953-11-27
1954	1954-01-29	1954-12-12
1955	1955-01-29	1955-12-21
1956	1956-01-11	1956-12-16
1957	1957-02-08	1957-11-26
1958	1958-02-01	1958-12-17
1959	1959-01-26	1959-12-27
1960	1960-01-09	1960-12-28
1961	1961-01-01	1961-12-15
1962	1962-01-25	1962-12-13
1963	1963-01-14	1963-12-11
1964	1964-02-12	1964-12-23
1965	1965-05-17	1965-12-08
1966	1966-02-14	1966-12-26
1967	1967-03-08	1967-12-18
1968	1968-01-21	1968-12-24
1969	1969-01-25	1969-12-02
1970	1970-01-02	1970-11-12

Every Fixed Threshold

Fixed thresholds at Molesworth
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	66	34	1956	24
25 mm (0.98 in): Days with 25 mm or more rain	62	8	1906	6
50 mm (1.97 in): Days with 50 mm or more rain	16	3	1918	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1950	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

Data for Molesworth 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).

Molesworth Threshold Days by Year (ASN00088045)

Key Facts for Molesworth Thresholds

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

Every Fixed Threshold

Download the Data

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