Lake Margaret Dam Threshold Days by Year

4 fixed thresholds counted per year at Lake Margaret Dam (ASN00097006): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lake Margaret Dam Thresholds

Lake Margaret Dam: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1931 with 165.
Lake Margaret Dam: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1948 with 66.
Lake Margaret Dam: days with 50 mm (1.97 in) or more of precipitation in 75 years, most in 1924 with 14.
Lake Margaret Dam: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1924 with 2.
4 fixed thresholds have at least one qualifying day at Lake Margaret Dam.

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

76 years with a qualifying day

Days per year at Lake Margaret Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 165 in 1931.

Days with 10 mm (0.39 in) or more of precipitation per year at Lake Margaret Dam
Year	Days	Decade average
1918	115	117
1919	119	117
1920	112	130.6
1921	135	130.6
1922	121	130.6
1923	136	130.6
1924	129	130.6
1925	117	130.6
1926	142	130.6
1927	125	130.6
1928	139	130.6
1929	150	130.6
1930	123	127.1
1931	165	127.1
1932	119	127.1
1933	130	127.1
1934	98	127.1
1935	135	127.1
1936	131	127.1
1937	114	127.1
1938	131	127.1
1939	125	127.1
1940	124	134
1941	130	134
1942	141	134
1943	116	134
1944	145	134
1945	138	134
1946	140	134
1947	143	134
1948	148	134
1949	115	134
1950	90	119.8
1951	122	119.8
1952	134	119.8
1953	136	119.8
1955	125	119.8
1956	127	119.8
1957	120	119.8
1958	123	119.8
1959	101	119.8
1960	112	113.8
1961	89	113.8
1962	119	113.8
1963	93	113.8
1964	135	113.8
1965	126	113.8
1966	107	113.8
1967	93	113.8
1968	154	113.8
1969	110	113.8
1970	118	121.8
1971	113	121.8
1972	111	121.8
1973	127	121.8
1974	114	121.8
1975	131	121.8
1976	123	121.8
1977	124	121.8
1978	121	121.8
1979	136	121.8
1980	140	125.4
1981	119	125.4
1982	119	125.4
1983	113	125.4
1984	141	125.4
1985	107	125.4
1986	151	125.4
1987	133	125.4
1988	129	125.4
1989	102	125.4
1992	115	115
2021	103	83
2022	105	83
2023	123	83
2026	1	83

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

First to last qualifying date each year at Lake Margaret Dam
Year	First date	Last date
1918	1918-01-15	1918-12-26
1919	1919-01-07	1919-12-29
1920	1920-01-21	1920-12-19
1921	1921-01-02	1921-12-16
1922	1922-01-11	1922-12-31
1923	1923-01-01	1923-12-21
1924	1924-01-05	1924-12-31
1925	1925-01-03	1925-12-30
1926	1926-01-05	1926-12-23
1927	1927-01-03	1927-12-31
1928	1928-01-01	1928-12-31
1929	1929-01-02	1929-12-31
1930	1930-01-01	1930-12-27
1931	1931-01-03	1931-12-22
1932	1932-01-09	1932-12-29
1933	1933-01-01	1933-12-22
1934	1934-01-09	1934-12-29
1935	1935-01-04	1935-12-21
1936	1936-01-04	1936-12-25
1937	1937-01-02	1937-12-26
1938	1938-01-04	1938-12-28
1939	1939-01-04	1939-12-30
1940	1940-01-06	1940-12-29
1941	1941-01-04	1941-12-30
1942	1942-01-01	1942-12-29
1943	1943-01-04	1943-12-25
1944	1944-01-02	1944-12-31
1945	1945-01-01	1945-12-29
1946	1946-01-04	1946-12-30
1947	1947-01-07	1947-12-31
1948	1948-01-01	1948-12-28
1949	1949-01-04	1949-12-25
1950	1950-01-02	1950-12-30
1951	1951-01-04	1951-12-31
1952	1952-01-01	1952-12-27
1953	1953-01-06	1953-12-28
1955	1955-01-06	1955-12-31
1956	1956-01-01	1956-12-31
1957	1957-01-07	1957-12-29
1958	1958-01-16	1958-12-29
1959	1959-01-07	1959-12-21
1960	1960-01-09	1960-12-04
1961	1961-01-03	1961-12-31
1962	1962-01-21	1962-12-20
1963	1963-01-06	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-02	1965-12-31
1966	1966-01-13	1966-12-20
1967	1967-01-02	1967-12-31
1968	1968-01-01	1968-12-24
1969	1969-01-04	1969-12-25
1970	1970-01-05	1970-12-31
1971	1971-01-16	1971-12-30
1972	1972-01-01	1972-12-30
1973	1973-01-06	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-09	1975-12-30
1976	1976-01-09	1976-12-29
1977	1977-01-02	1977-12-20
1978	1978-01-08	1978-12-28
1979	1979-01-08	1979-12-31
1980	1980-01-15	1980-12-29
1981	1981-01-10	1981-12-20
1982	1982-01-01	1982-12-20
1983	1983-01-05	1983-12-17
1984	1984-01-03	1984-12-26
1985	1985-01-04	1985-12-22
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-28
1988	1988-01-01	1988-12-28
1989	1989-01-05	1989-12-28
1992	1992-01-06	1992-12-30
2021	2021-01-14	2021-12-21
2022	2022-01-08	2022-12-29
2023	2023-01-15	2023-12-30
2026	2026-06-01	2026-06-01

Every Fixed Threshold

Fixed thresholds at Lake Margaret Dam
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	76	165	1931	1
25 mm (0.98 in): Days with 25 mm or more rain	76	66	1948	1
50 mm (1.97 in): Days with 50 mm or more rain	75	14	1924	6
100 mm (3.94 in): Days with 100 mm or more rain	11	2	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

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Data for Lake Margaret Dam 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Lake Margaret Dam Threshold Days by Year

Key Facts for Lake Margaret Dam Thresholds

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

Every Fixed Threshold

Download the Data

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