Driefontein Threshold Days by Year (SF007233380)

5 fixed thresholds counted per year at Driefontein (SF007233380): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Driefontein Thresholds

Driefontein: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 1977 with 40.
Driefontein: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1955 with 20.
Driefontein: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 1977 with 10.
Driefontein: days with 100 mm (3.94 in) or more of precipitation in 17 years, most in 1936 with 2.
5 fixed thresholds have at least one qualifying day at Driefontein.

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

64 years with a qualifying day

Days per year at Driefontein with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1977.

Days with 10 mm (0.39 in) or more of precipitation per year at Driefontein
Year	Days	Decade average
1923	22	17.6
1924	20	17.6
1925	16	17.6
1926	13	17.6
1927	23	17.6
1928	10	17.6
1929	19	17.6
1930	11	19.6
1931	12	19.6
1932	25	19.6
1933	12	19.6
1934	29	19.6
1935	5	19.6
1936	27	19.6
1937	22	19.6
1938	26	19.6
1939	27	19.6
1940	30	20.5
1941	10	20.5
1942	22	20.5
1943	19	20.5
1944	21	20.5
1945	19	20.5
1946	17	20.5
1947	17	20.5
1948	28	20.5
1949	22	20.5
1950	26	26
1951	24	26
1952	27	26
1953	22	26
1954	26	26
1955	31	26
1956	20	26
1957	27	26
1958	36	26
1959	21	26
1960	24	21.7
1961	25	21.7
1962	19	21.7
1963	16	21.7
1964	17	21.7
1965	19	21.7
1966	24	21.7
1967	28	21.7
1968	21	21.7
1969	24	21.7
1970	13	28.9
1971	27	28.9
1972	34	28.9
1973	29	28.9
1974	29	28.9
1975	33	28.9
1976	30	28.9
1977	40	28.9
1978	28	28.9
1979	26	28.9
1980	28	23.1
1981	38	23.1
1982	7	23.1
1983	15	23.1
1984	25	23.1
1985	33	23.1
1986	16	23.1

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

First to last qualifying date each year at Driefontein
Year	First date	Last date
1923	1923-01-25	1923-12-21
1924	1924-01-26	1924-12-30
1925	1925-01-02	1925-11-27
1926	1926-01-03	1926-12-16
1927	1927-01-01	1927-12-15
1928	1928-01-07	1928-12-08
1929	1929-01-16	1929-12-18
1930	1930-01-18	1930-12-22
1931	1931-01-16	1931-12-03
1932	1932-01-19	1932-12-26
1933	1933-01-07	1933-12-25
1934	1934-01-01	1934-12-27
1935	1935-01-14	1935-12-19
1936	1936-01-11	1936-12-14
1937	1937-01-06	1937-12-29
1938	1938-01-06	1938-12-31
1939	1939-01-01	1939-12-27
1940	1940-01-19	1940-12-31
1941	1941-03-18	1941-12-26
1942	1942-01-05	1942-12-22
1943	1943-01-04	1943-11-17
1944	1944-01-12	1944-11-08
1945	1945-01-01	1945-12-28
1946	1946-01-04	1946-03-21
1947	1947-01-02	1947-12-31
1948	1948-01-01	1948-12-21
1949	1949-01-13	1949-12-27
1950	1950-01-09	1950-12-31
1951	1951-01-16	1951-12-26
1952	1952-01-02	1952-12-31
1953	1953-02-01	1953-12-23
1954	1954-01-01	1954-12-29
1955	1955-01-05	1955-12-28
1956	1956-01-13	1956-12-09
1957	1957-01-08	1957-12-25
1958	1958-01-02	1958-12-29
1959	1959-01-02	1959-12-26
1960	1960-01-24	1960-12-30
1961	1961-01-05	1961-12-26
1962	1962-01-18	1962-12-28
1963	1963-01-24	1963-12-22
1964	1964-01-02	1964-12-19
1965	1965-01-06	1965-12-29
1966	1966-01-07	1966-12-20
1967	1967-01-12	1967-12-02
1968	1968-02-01	1968-12-27
1969	1969-01-05	1969-12-10
1970	1970-02-07	1970-12-31
1971	1971-01-01	1971-12-21
1972	1972-01-04	1972-12-30
1973	1973-01-09	1973-12-25
1974	1974-01-03	1974-12-11
1975	1975-01-12	1975-12-31
1976	1976-01-07	1976-12-27
1977	1977-01-26	1977-12-31
1978	1978-01-01	1978-12-22
1979	1979-01-02	1979-12-26
1980	1980-01-04	1980-12-25
1981	1981-01-03	1981-12-26
1982	1982-01-31	1982-10-14
1983	1983-01-12	1983-12-17
1984	1984-01-11	1984-12-14
1985	1985-01-07	1985-12-30
1986	1986-01-29	1986-12-06

Every Fixed Threshold

Fixed thresholds at Driefontein
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	64	40	1977	16
25 mm (0.98 in): Days with 25 mm or more rain	64	20	1955	5
50 mm (1.97 in): Days with 50 mm or more rain	56	10	1977	1
100 mm (3.94 in): Days with 100 mm or more rain	17	2	1936	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1933	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1923.

Download the Data

Data for Driefontein 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).

Driefontein Threshold Days by Year (SF007233380)

Key Facts for Driefontein Thresholds

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

Every Fixed Threshold

Download the Data

Related