Driefontein Threshold Days by Year (SF006787220)

4 fixed thresholds counted per year at Driefontein (SF006787220): 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 58 years, most in 1955 with 32.
Driefontein: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1939 with 17.
Driefontein: days with 50 mm (1.97 in) or more of precipitation in 40 years, most in 1929 with 9.
Driefontein: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1930 with 4.
4 fixed thresholds have at least one qualifying day at Driefontein.

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

58 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 32 in 1955.

Days with 10 mm (0.39 in) or more of precipitation per year at Driefontein
Year	Days	Decade average
1927	22	23
1928	18	23
1929	29	23
1930	22	18.4
1931	28	18.4
1932	17	18.4
1933	17	18.4
1934	21	18.4
1935	9	18.4
1937	13	18.4
1938	15	18.4
1939	24	18.4
1942	12	17
1943	20	17
1944	23	17
1945	13	17
1946	17	17
1947	12	17
1948	17	17
1949	22	17
1950	17	20.7
1951	14	20.7
1952	18	20.7
1954	21	20.7
1955	32	20.7
1956	19	20.7
1957	22	20.7
1958	30	20.7
1959	13	20.7
1960	18	16
1961	13	16
1962	17	16
1963	17	16
1964	15	16
1965	11	16
1966	19	16
1967	14	16
1968	17	16
1969	19	16
1970	13	22.9
1971	19	22.9
1972	28	22.9
1973	23	22.9
1974	26	22.9
1975	21	22.9
1976	27	22.9
1977	25	22.9
1978	26	22.9
1979	21	22.9
1980	24	18.3
1981	29	18.3
1982	9	18.3
1983	14	18.3
1984	17	18.3
1985	14	18.3
1986	22	18.3
1987	15	18.3
1988	21	18.3

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
1927	1927-01-03	1927-12-12
1928	1928-01-01	1928-12-26
1929	1929-01-12	1929-12-20
1930	1930-01-17	1930-12-23
1931	1931-01-01	1931-12-05
1932	1932-01-22	1932-12-27
1933	1933-01-07	1933-12-13
1934	1934-01-01	1934-12-28
1935	1935-01-19	1935-12-13
1937	1937-01-06	1937-12-20
1938	1938-01-22	1938-12-29
1939	1939-02-04	1939-12-28
1942	1942-01-10	1942-12-16
1943	1943-01-16	1943-11-30
1944	1944-01-03	1944-12-21
1945	1945-01-08	1945-12-27
1946	1946-01-08	1946-12-29
1947	1947-01-14	1947-12-30
1948	1948-01-01	1948-12-20
1949	1949-01-13	1949-12-30
1950	1950-01-09	1950-12-30
1951	1951-01-21	1951-12-12
1952	1952-01-02	1952-12-14
1954	1954-01-04	1954-12-16
1955	1955-01-05	1955-12-28
1956	1956-01-13	1956-12-07
1957	1957-01-07	1957-12-12
1958	1958-01-02	1958-12-29
1959	1959-01-06	1959-12-18
1960	1960-02-01	1960-12-19
1961	1961-01-05	1961-12-14
1962	1962-01-10	1962-12-24
1963	1963-01-13	1963-12-30
1964	1964-01-25	1964-12-27
1965	1965-01-11	1965-12-29
1966	1966-01-20	1966-12-22
1967	1967-01-22	1967-12-04
1968	1968-01-06	1968-12-29
1969	1969-01-17	1969-12-19
1970	1970-01-20	1970-12-29
1971	1971-01-01	1971-11-30
1972	1972-01-01	1972-12-29
1973	1973-01-08	1973-12-25
1974	1974-01-04	1974-12-23
1975	1975-01-08	1975-12-29
1976	1976-01-07	1976-12-27
1977	1977-01-11	1977-12-30
1978	1978-01-01	1978-12-30
1979	1979-01-01	1979-12-26
1980	1980-01-04	1980-12-24
1981	1981-01-03	1981-12-31
1982	1982-02-16	1982-11-22
1983	1983-01-12	1983-12-26
1984	1984-02-01	1984-12-02
1985	1985-01-13	1985-12-25
1986	1986-01-14	1986-12-30
1987	1987-01-10	1987-12-23
1988	1988-01-05	1988-11-28

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	58	32	1955	21
25 mm (0.98 in): Days with 25 mm or more rain	58	17	1939	3
50 mm (1.97 in): Days with 50 mm or more rain	40	9	1929	1
100 mm (3.94 in): Days with 100 mm or more rain	11	4	1930	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 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 (SF006787220)

Key Facts for Driefontein Thresholds

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

Every Fixed Threshold

Download the Data

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