Heath Threshold Days by Year

7 fixed thresholds counted per year at Heath (USC00193549): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heath Thresholds

Heath: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1951 with 54.
Heath: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1975 with 22.
Heath: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 1955 with 9.
Heath: days with 10 cm (3.9 in) or more of snowfall in 51 years, most in 1956 with 13.
7 fixed thresholds have at least one qualifying day at Heath.

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

72 years with a qualifying day

Days per year at Heath with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 54 in 1951.

Days with 10 mm (0.39 in) or more of precipitation per year at Heath
Year	Days	Decade average
1927	46	41
1928	36	41
1929	41	41
1930	32	38.7
1931	45	38.7
1932	38	38.7
1933	33	38.7
1934	41	38.7
1935	37	38.7
1936	42	38.7
1937	45	38.7
1938	41	38.7
1939	33	38.7
1940	40	39
1941	25	39
1942	44	39
1943	42	39
1944	45	39
1945	47	39
1946	36	39
1947	39	39
1948	38	39
1949	34	39
1950	42	44.1
1951	54	44.1
1952	38	44.1
1953	51	44.1
1954	46	44.1
1955	39	44.1
1956	39	44.1
1957	40	44.1
1958	45	44.1
1959	47	44.1
1960	44	39.3
1961	44	39.3
1962	36	39.3
1963	32	39.3
1964	33	39.3
1965	30	39.3
1966	36	39.3
1967	49	39.3
1968	42	39.3
1969	47	39.3
1970	40	43.5
1971	37	43.5
1972	46	43.5
1973	46	43.5
1974	43	43.5
1975	50	43.5
1976	32	43.5
1977	52	43.5
1978	39	43.5
1979	50	43.5
1980	32	41.8
1981	42	41.8
1982	37	41.8
1983	53	41.8
1984	49	41.8
1985	37	41.8
1986	47	41.8
1987	35	41.8
1988	40	41.8
1989	46	41.8
1990	44	39.4
1991	37	39.4
1992	41	39.4
1993	35	39.4
1994	42	39.4
1998	37	39.4
1999	40	39.4
2000	43	40
2001	37	40

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

First to last qualifying date each year at Heath
Year	First date	Last date
1927	1927-01-04	1927-12-31
1928	1928-01-24	1928-12-27
1929	1929-01-01	1929-12-23
1930	1930-01-09	1930-11-16
1931	1931-01-05	1931-12-25
1932	1932-01-01	1932-12-25
1933	1933-01-09	1933-12-26
1934	1934-01-07	1934-12-26
1935	1935-01-01	1935-12-15
1936	1936-01-02	1936-12-19
1937	1937-01-02	1937-12-31
1938	1938-01-01	1938-12-26
1939	1939-01-05	1939-12-20
1940	1940-01-12	1940-12-28
1941	1941-01-16	1941-12-24
1942	1942-01-01	1942-12-30
1943	1943-01-03	1943-12-26
1944	1944-01-05	1944-12-27
1945	1945-01-01	1945-12-29
1946	1946-01-09	1946-12-29
1947	1947-01-01	1947-12-26
1948	1948-01-01	1948-12-31
1949	1949-01-01	1949-12-27
1950	1950-01-07	1950-12-30
1951	1951-01-08	1951-12-26
1952	1952-01-18	1952-12-12
1953	1953-01-03	1953-12-15
1954	1954-01-10	1954-12-30
1955	1955-02-07	1955-12-05
1956	1956-01-09	1956-12-23
1957	1957-01-23	1957-12-27
1958	1958-01-01	1958-12-06
1959	1959-01-02	1959-12-29
1960	1960-01-03	1960-12-22
1961	1961-01-02	1961-12-29
1962	1962-01-07	1962-12-22
1963	1963-01-12	1963-12-09
1964	1964-01-02	1964-12-28
1965	1965-01-24	1965-12-26
1966	1966-01-03	1966-12-30
1967	1967-01-28	1967-12-29
1968	1968-01-15	1968-12-29
1969	1969-01-07	1969-12-27
1970	1970-02-03	1970-12-24
1971	1971-01-02	1971-12-31
1972	1972-01-03	1972-12-31
1973	1973-01-01	1973-12-28
1974	1974-01-01	1974-12-17
1975	1975-01-07	1975-12-31
1976	1976-01-12	1976-12-08
1977	1977-01-11	1977-12-22
1978	1978-01-09	1978-12-26
1979	1979-01-01	1979-12-26
1980	1980-01-12	1980-12-16
1981	1981-02-02	1981-12-28
1982	1982-01-02	1982-12-24
1983	1983-01-06	1983-12-29
1984	1984-01-10	1984-12-22
1985	1985-02-13	1985-12-14
1986	1986-01-04	1986-12-25
1987	1987-01-03	1987-12-16
1988	1988-01-09	1988-12-25
1989	1989-02-16	1989-12-03
1990	1990-01-01	1990-12-24
1991	1991-01-12	1991-12-30
1992	1992-01-05	1992-12-31
1993	1993-01-05	1993-12-22
1994	1994-01-08	1994-12-25
1998	1998-01-06	1998-12-30
1999	1999-01-04	1999-12-21
2000	2000-01-04	2000-12-30
2001	2001-02-06	2001-12-31

Every Fixed Threshold

Fixed thresholds at Heath
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	72	54	1951	37
25 mm (0.98 in): Days with 25 mm or more rain	72	22	1975	12
50 mm (1.97 in): Days with 50 mm or more rain	58	9	1955	3
100 mm (3.94 in): Days with 100 mm or more rain	11	3	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	51	13	1956	10
25 cm (9.8 in): Days with 25 cm or more snowfall	37	3	1967	2
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1986	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1927.

Download the Data

Data for Heath 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).

Heath Threshold Days by Year

Key Facts for Heath Thresholds

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

Every Fixed Threshold

Download the Data

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