Ben Lomond Threshold Days by Year (SF002086350)

4 fixed thresholds counted per year at Ben Lomond (SF002086350): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ben Lomond Thresholds

Ben Lomond: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1943 with 46.
Ben Lomond: days with 25 mm (0.98 in) or more of precipitation in 73 years, most in 1988 with 15.
Ben Lomond: days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 1965 with 4.
Ben Lomond: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1959 with 1.
4 fixed thresholds have at least one qualifying day at Ben Lomond.

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

73 years with a qualifying day

Days per year at Ben Lomond with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1943.

Days with 10 mm (0.39 in) or more of precipitation per year at Ben Lomond
Year	Days	Decade average
1921	36	30.6
1922	27	30.6
1924	31	30.6
1925	37	30.6
1926	23	30.6
1927	28	30.6
1929	32	30.6
1930	23	29.9
1931	33	29.9
1932	34	29.9
1933	30	29.9
1934	40	29.9
1935	23	29.9
1936	29	29.9
1937	25	29.9
1938	35	29.9
1939	27	29.9
1940	42	31.1
1941	25	31.1
1943	46	31.1
1944	28	31.1
1945	29	31.1
1947	30	31.1
1948	23	31.1
1949	26	31.1
1950	41	30.3
1951	31	30.3
1952	21	30.3
1953	28	30.3
1954	22	30.3
1955	35	30.3
1956	33	30.3
1957	32	30.3
1958	30	30.3
1959	30	30.3
1960	32	30.2
1961	26	30.2
1962	24	30.2
1963	33	30.2
1964	32	30.2
1965	34	30.2
1966	33	30.2
1967	41	30.2
1968	14	30.2
1969	33	30.2
1970	25	28.4
1971	29	28.4
1972	23	28.4
1973	31	28.4
1974	34	28.4
1975	25	28.4
1976	27	28.4
1977	28	28.4
1978	35	28.4
1979	27	28.4
1980	21	31.6
1981	28	31.6
1982	23	31.6
1983	31	31.6
1984	25	31.6
1985	38	31.6
1986	35	31.6
1987	35	31.6
1988	46	31.6
1989	34	31.6
1990	27	29.6
1991	36	29.6
1992	16	29.6
1993	28	29.6
1994	29	29.6
1995	32	29.6
1996	39	29.6
1997	30	29.6

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

First to last qualifying date each year at Ben Lomond
Year	First date	Last date
1921	1921-01-03	1921-12-28
1922	1922-01-11	1922-12-30
1924	1924-01-06	1924-12-27
1925	1925-01-03	1925-12-12
1926	1926-01-13	1926-12-24
1927	1927-01-01	1927-12-28
1929	1929-01-16	1929-12-30
1930	1930-01-09	1930-12-29
1931	1931-01-01	1931-12-31
1932	1932-01-11	1932-12-26
1933	1933-01-02	1933-12-27
1934	1934-01-01	1934-12-26
1935	1935-01-13	1935-12-31
1936	1936-01-01	1936-12-04
1937	1937-01-06	1937-12-31
1938	1938-01-11	1938-12-31
1939	1939-01-01	1939-12-20
1940	1940-01-03	1940-12-24
1941	1941-01-01	1941-12-20
1943	1943-01-03	1943-12-31
1944	1944-01-01	1944-12-16
1945	1945-01-06	1945-12-04
1947	1947-01-05	1947-12-30
1948	1948-01-02	1948-12-16
1949	1949-01-03	1949-12-23
1950	1950-01-08	1950-12-30
1951	1951-01-02	1951-12-30
1952	1952-01-02	1952-12-25
1953	1953-01-11	1953-12-30
1954	1954-01-04	1954-12-13
1955	1955-01-04	1955-12-29
1956	1956-01-10	1956-12-25
1957	1957-01-12	1957-12-31
1958	1958-01-08	1958-12-28
1959	1959-01-25	1959-12-17
1960	1960-01-17	1960-12-29
1961	1961-01-12	1961-12-25
1962	1962-01-05	1962-12-14
1963	1963-01-04	1963-12-29
1964	1964-01-01	1964-12-29
1965	1965-01-05	1965-12-06
1966	1966-01-08	1966-12-19
1967	1967-01-01	1967-12-30
1968	1968-01-08	1968-12-23
1969	1969-01-02	1969-12-30
1970	1970-01-16	1970-12-25
1971	1971-01-11	1971-12-31
1972	1972-01-10	1972-12-08
1973	1973-01-01	1973-12-31
1974	1974-01-10	1974-12-19
1975	1975-01-15	1975-12-31
1976	1976-01-04	1976-12-24
1977	1977-01-10	1977-12-31
1978	1978-01-04	1978-12-28
1979	1979-01-01	1979-12-22
1980	1980-01-05	1980-12-21
1981	1981-01-07	1981-12-27
1982	1982-01-03	1982-12-31
1983	1983-01-24	1983-12-29
1984	1984-01-12	1984-12-17
1985	1985-01-01	1985-12-23
1986	1986-01-02	1986-12-18
1987	1987-01-11	1987-12-22
1988	1988-01-07	1988-12-24
1989	1989-01-01	1989-12-28
1990	1990-01-05	1990-12-29
1991	1991-01-04	1991-12-19
1992	1992-01-23	1992-12-20
1993	1993-01-09	1993-12-28
1994	1994-01-06	1994-12-23
1995	1995-01-07	1995-12-27
1996	1996-01-18	1996-12-30
1997	1997-01-01	1997-11-28

Every Fixed Threshold

Fixed thresholds at Ben Lomond
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	73	46	1943	30
25 mm (0.98 in): Days with 25 mm or more rain	73	15	1988	8
50 mm (1.97 in): Days with 50 mm or more rain	41	4	1965	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1959	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

Data for Ben Lomond 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).

Ben Lomond Threshold Days by Year (SF002086350)

Key Facts for Ben Lomond Thresholds

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

Every Fixed Threshold

Download the Data

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