Olyfenfontein Threshold Days by Year

4 fixed thresholds counted per year at Olyfenfontein (SF003594580): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Olyfenfontein Thresholds

Olyfenfontein: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1974 with 25.
Olyfenfontein: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1974 with 12.
Olyfenfontein: days with 50 mm (1.97 in) or more of precipitation in 37 years, most in 1931 with 3.
Olyfenfontein: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1961 with 1.
4 fixed thresholds have at least one qualifying day at Olyfenfontein.

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

67 years with a qualifying day

Days per year at Olyfenfontein with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Olyfenfontein
Year	Days	Decade average
1930	5	14.1
1931	19	14.1
1932	13	14.1
1933	11	14.1
1934	22	14.1
1935	10	14.1
1936	11	14.1
1937	14	14.1
1938	15	14.1
1939	21	14.1
1940	11	12
1941	7	12
1942	16	12
1943	17	12
1944	7	12
1945	13	12
1946	10	12
1947	16	12
1948	14	12
1949	9	12
1950	24	15.3
1952	6	15.3
1953	12	15.3
1954	11	15.3
1955	17	15.3
1956	21	15.3
1957	21	15.3
1958	12	15.3
1959	14	15.3
1960	14	13.6
1961	22	13.6
1962	12	13.6
1963	22	13.6
1964	8	13.6
1965	5	13.6
1966	13	13.6
1967	18	13.6
1968	11	13.6
1969	11	13.6
1970	12	15.8
1971	17	15.8
1972	16	15.8
1973	10	15.8
1974	25	15.8
1975	24	15.8
1976	24	15.8
1977	12	15.8
1978	2	15.8
1979	16	15.8
1980	14	13.8
1981	21	13.8
1982	11	13.8
1983	15	13.8
1984	7	13.8
1985	7	13.8
1986	12	13.8
1987	13	13.8
1988	24	13.8
1989	14	13.8
1990	6	11.5
1991	21	11.5
1992	3	11.5
1993	13	11.5
1994	7	11.5
1995	9	11.5
1996	13	11.5
1997	20	11.5

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

First to last qualifying date each year at Olyfenfontein
Year	First date	Last date
1930	1930-02-13	1930-12-15
1931	1931-01-07	1931-12-30
1932	1932-01-21	1932-12-21
1933	1933-01-15	1933-12-16
1934	1934-01-01	1934-12-16
1935	1935-01-26	1935-12-10
1936	1936-01-08	1936-11-20
1937	1937-01-20	1937-12-23
1938	1938-01-25	1938-12-26
1939	1939-01-20	1939-11-05
1940	1940-01-05	1940-12-21
1941	1941-01-01	1941-12-14
1942	1942-01-23	1942-12-17
1943	1943-03-03	1943-12-31
1944	1944-01-07	1944-10-26
1945	1945-01-06	1945-11-30
1946	1946-01-16	1946-12-14
1947	1947-01-12	1947-12-20
1948	1948-01-02	1948-11-07
1949	1949-01-19	1949-12-10
1950	1950-01-23	1950-12-05
1952	1952-02-29	1952-11-04
1953	1953-01-04	1953-12-19
1954	1954-01-08	1954-12-07
1955	1955-01-02	1955-12-17
1956	1956-01-14	1956-12-10
1957	1957-02-23	1957-12-30
1958	1958-01-02	1958-12-31
1959	1959-01-01	1959-12-31
1960	1960-01-21	1960-11-24
1961	1961-01-16	1961-11-26
1962	1962-02-09	1962-12-12
1963	1963-01-01	1963-12-09
1964	1964-02-11	1964-12-14
1965	1965-01-14	1965-11-13
1966	1966-01-18	1966-12-11
1967	1967-01-12	1967-12-22
1968	1968-03-05	1968-12-06
1969	1969-01-17	1969-12-08
1970	1970-01-23	1970-12-25
1971	1971-01-08	1971-12-18
1972	1972-01-08	1972-10-03
1973	1973-02-16	1973-12-23
1974	1974-01-08	1974-11-11
1975	1975-01-21	1975-12-18
1976	1976-01-01	1976-12-25
1977	1977-01-09	1977-12-31
1978	1978-01-31	1978-10-13
1979	1979-01-08	1979-12-12
1980	1980-02-22	1980-12-24
1981	1981-01-01	1981-12-22
1982	1982-02-07	1982-12-04
1983	1983-01-14	1983-12-30
1984	1984-03-20	1984-11-27
1985	1985-01-15	1985-03-11
1986	1986-01-19	1986-12-27
1987	1987-01-09	1987-12-17
1988	1988-01-13	1988-12-14
1989	1989-01-01	1989-12-11
1990	1990-01-27	1990-12-28
1991	1991-01-15	1991-12-23
1992	1992-02-16	1992-11-07
1993	1993-02-05	1993-12-31
1994	1994-01-17	1994-12-06
1995	1995-01-12	1995-12-15
1996	1996-01-18	1996-12-27
1997	1997-01-01	1997-12-30

Every Fixed Threshold

Fixed thresholds at Olyfenfontein
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	67	25	1974	20
25 mm (0.98 in): Days with 25 mm or more rain	64	12	1974	9
50 mm (1.97 in): Days with 50 mm or more rain	37	3	1931	2
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

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Data for Olyfenfontein 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Olyfenfontein Threshold Days by Year

Key Facts for Olyfenfontein Thresholds

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

Every Fixed Threshold

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