Heilbron "Smoordrif" Threshold Days by Year (SF001220710)

3 fixed thresholds counted per year at Heilbron "Smoordrif" (SF001220710): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heilbron "Smoordrif" Thresholds

Heilbron "Smoordrif": days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1976 with 38.
Heilbron "Smoordrif": days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1974 with 11.
Heilbron "Smoordrif": days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 1950 with 3.
3 fixed thresholds have at least one qualifying day at Heilbron "Smoordrif".

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

74 years with a qualifying day

Days per year at Heilbron "Smoordrif" with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1976.

Days with 10 mm (0.39 in) or more of precipitation per year at Heilbron "Smoordrif"
Year	Days	Decade average
1914	10	12.8
1915	12	12.8
1916	15	12.8
1917	19	12.8
1918	12	12.8
1919	9	12.8
1920	17	16.7
1921	18	16.7
1922	13	16.7
1924	11	16.7
1925	28	16.7
1926	12	16.7
1927	10	16.7
1928	16	16.7
1929	25	16.7
1930	17	15.9
1931	19	15.9
1932	13	15.9
1933	14	15.9
1934	23	15.9
1935	16	15.9
1936	19	15.9
1937	13	15.9
1938	14	15.9
1939	11	15.9
1940	10	13.3
1941	10	13.3
1942	24	13.3
1943	14	13.3
1944	18	13.3
1945	10	13.3
1946	16	13.3
1947	12	13.3
1948	12	13.3
1949	7	13.3
1950	25	13.5
1951	9	13.5
1952	13	13.5
1953	15	13.5
1954	11	13.5
1955	10	13.5
1956	14	13.5
1957	12	13.5
1958	13	13.5
1959	13	13.5
1960	6	12.4
1961	16	12.4
1962	12	12.4
1963	26	12.4
1964	13	12.4
1965	14	12.4
1966	7	12.4
1967	16	12.4
1968	5	12.4
1969	9	12.4
1970	13	21.4
1971	17	21.4
1972	18	21.4
1973	18	21.4
1974	33	21.4
1975	19	21.4
1976	38	21.4
1977	23	21.4
1978	14	21.4
1979	21	21.4
1980	11	15.4
1981	20	15.4
1982	20	15.4
1983	21	15.4
1984	10	15.4
1985	22	15.4
1986	13	15.4
1987	12	15.4
1988	10	15.4

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

First to last qualifying date each year at Heilbron "Smoordrif"
Year	First date	Last date
1914	1914-03-12	1914-12-03
1915	1915-01-04	1915-12-29
1916	1916-01-04	1916-12-18
1917	1917-01-27	1917-12-18
1918	1918-02-24	1918-12-04
1919	1919-04-01	1919-12-30
1920	1920-01-04	1920-12-18
1921	1921-02-03	1921-11-12
1922	1922-01-11	1922-12-31
1924	1924-01-21	1924-11-12
1925	1925-01-21	1925-11-23
1926	1926-01-25	1926-12-28
1927	1927-02-17	1927-12-27
1928	1928-01-04	1928-12-25
1929	1929-01-18	1929-12-29
1930	1930-01-14	1930-11-16
1931	1931-01-23	1931-12-31
1932	1932-01-02	1932-09-17
1933	1933-01-01	1933-12-29
1934	1934-01-02	1934-12-12
1935	1935-01-29	1935-12-15
1936	1936-02-06	1936-12-04
1937	1937-01-04	1937-12-14
1938	1938-01-21	1938-12-17
1939	1939-01-11	1939-10-14
1940	1940-02-22	1940-12-03
1941	1941-01-05	1941-12-22
1942	1942-01-02	1942-12-21
1943	1943-01-24	1943-12-26
1944	1944-01-04	1944-10-22
1945	1945-01-06	1945-10-05
1946	1946-01-14	1946-12-19
1947	1947-01-08	1947-12-23
1948	1948-01-29	1948-10-10
1949	1949-03-20	1949-12-10
1950	1950-01-05	1950-12-28
1951	1951-01-02	1951-10-26
1952	1952-01-16	1952-12-15
1953	1953-02-08	1953-12-19
1954	1954-01-20	1954-11-05
1955	1955-01-27	1955-11-29
1956	1956-01-16	1956-12-08
1957	1957-01-14	1957-12-29
1958	1958-01-02	1958-12-20
1959	1959-01-25	1959-12-22
1960	1960-01-19	1960-12-18
1961	1961-01-14	1961-12-16
1962	1962-01-07	1962-11-18
1963	1963-01-01	1963-12-09
1964	1964-01-10	1964-12-26
1965	1965-02-02	1965-12-12
1966	1966-01-19	1966-11-04
1967	1967-03-24	1967-12-22
1968	1968-04-06	1968-12-07
1969	1969-02-24	1969-10-19
1970	1970-02-25	1970-12-24
1971	1971-01-09	1971-12-30
1972	1972-01-09	1972-12-14
1973	1973-01-05	1973-12-22
1974	1974-01-09	1974-12-23
1975	1975-01-23	1975-12-23
1976	1976-01-05	1976-12-25
1977	1977-01-10	1977-12-31
1978	1978-01-08	1978-12-09
1979	1979-01-09	1979-11-19
1980	1980-02-07	1980-12-27
1981	1981-01-24	1981-12-23
1982	1982-02-08	1982-11-16
1983	1983-01-08	1983-12-30
1984	1984-04-07	1984-12-01
1985	1985-01-02	1985-12-20
1986	1986-01-18	1986-11-20
1987	1987-02-10	1987-09-26
1988	1988-01-15	1988-05-28

Every Fixed Threshold

Fixed thresholds at Heilbron "Smoordrif"
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	74	38	1976	10
25 mm (0.98 in): Days with 25 mm or more rain	71	11	1974	4
50 mm (1.97 in): Days with 50 mm or more rain	21	3	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 1914.

Download the Data

Data for Heilbron "Smoordrif" 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).

Heilbron "Smoordrif" Threshold Days by Year (SF001220710)

Key Facts for Heilbron "Smoordrif" Thresholds

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

Every Fixed Threshold

Download the Data

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