Langley Downs Threshold Days by Year

5 fixed thresholds counted per year at Langley Downs (ASN00035231): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Langley Downs Thresholds

Langley Downs: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1956 with 35.
Langley Downs: days with 25 mm (0.98 in) or more of precipitation in 56 years, most in 1950 with 16.
Langley Downs: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1955 with 6.
Langley Downs: days with 100 mm (3.94 in) or more of precipitation in 15 years, most in 1936 with 2.
5 fixed thresholds have at least one qualifying day at Langley Downs.

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

56 years with a qualifying day

Days per year at Langley Downs 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 Langley Downs
Year	Days	Decade average
1936	13	15.3
1937	14	15.3
1938	16	15.3
1939	18	15.3
1940	20	16.9
1941	18	16.9
1942	17	16.9
1943	14	16.9
1944	10	16.9
1945	17	16.9
1946	16	16.9
1947	19	16.9
1948	14	16.9
1949	24	16.9
1950	34	22.5
1951	13	22.5
1952	16	22.5
1953	12	22.5
1954	26	22.5
1955	25	22.5
1956	35	22.5
1957	17	22.5
1958	26	22.5
1959	21	22.5
1960	18	16
1961	20	16
1962	10	16
1963	18	16
1964	18	16
1965	14	16
1966	17	16
1967	18	16
1968	16	16
1969	11	16
1970	16	16.9
1971	17	16.9
1972	11	16.9
1973	23	16.9
1975	19	16.9
1976	18	16.9
1978	18	16.9
1979	13	16.9
1980	21	16.6
1981	25	16.6
1982	10	16.6
1985	14	16.6
1986	19	16.6
1987	14	16.6
1988	17	16.6
1989	13	16.6
1990	17	13.8
1991	14	13.8
1993	6	13.8
1994	10	13.8
1995	19	13.8
1996	17	13.8

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

First to last qualifying date each year at Langley Downs
Year	First date	Last date
1936	1936-01-14	1936-12-13
1937	1937-01-04	1937-12-21
1938	1938-01-07	1938-11-25
1939	1939-01-19	1939-12-18
1940	1940-01-18	1940-12-24
1941	1941-01-05	1941-12-10
1942	1942-02-04	1942-12-29
1943	1943-01-01	1943-12-28
1944	1944-01-06	1944-12-19
1945	1945-01-12	1945-12-19
1946	1946-01-07	1946-12-14
1947	1947-01-15	1947-12-12
1948	1948-01-31	1948-12-07
1949	1949-01-08	1949-12-09
1950	1950-01-18	1950-11-24
1951	1951-01-10	1951-12-28
1952	1952-01-09	1952-10-26
1953	1953-01-04	1953-12-27
1954	1954-01-03	1954-12-18
1955	1955-01-23	1955-12-15
1956	1956-01-19	1956-12-26
1957	1957-01-10	1957-12-16
1958	1958-01-03	1958-12-31
1959	1959-01-11	1959-12-21
1960	1960-01-18	1960-12-27
1961	1961-01-03	1961-12-16
1962	1962-01-29	1962-12-30
1963	1963-01-09	1963-12-19
1964	1964-01-01	1964-12-28
1965	1965-01-06	1965-12-16
1966	1966-01-02	1966-12-19
1967	1967-01-05	1967-12-31
1968	1968-01-08	1968-12-20
1969	1969-01-08	1969-12-24
1970	1970-01-23	1970-12-30
1971	1971-01-18	1971-12-27
1972	1972-01-03	1972-12-31
1973	1973-01-09	1973-12-27
1975	1975-01-02	1975-12-26
1976	1976-01-12	1976-12-23
1978	1978-01-12	1978-12-27
1979	1979-01-25	1979-12-26
1980	1980-01-06	1980-12-29
1981	1981-01-03	1981-12-25
1982	1982-01-16	1982-12-21
1985	1985-01-12	1985-12-29
1986	1986-01-01	1986-11-30
1987	1987-01-07	1987-12-30
1988	1988-02-02	1988-12-26
1989	1989-01-11	1989-11-15
1990	1990-03-03	1990-12-29
1991	1991-01-04	1991-12-31
1993	1993-08-28	1993-11-23
1994	1994-02-04	1994-11-21
1995	1995-01-02	1995-12-11
1996	1996-01-02	1996-12-16

Every Fixed Threshold

Fixed thresholds at Langley Downs
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	56	35	1956	17
25 mm (0.98 in): Days with 25 mm or more rain	56	16	1950	8
50 mm (1.97 in): Days with 50 mm or more rain	47	6	1955	5
100 mm (3.94 in): Days with 100 mm or more rain	15	2	1936	1
200 mm (7.87 in): Days with 200 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 1936.

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Data for Langley Downs 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).

Langley Downs Threshold Days by Year

Key Facts for Langley Downs Thresholds

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

Every Fixed Threshold

Download the Data

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