Tweefontein Threshold Days by Year (SF001727240)

3 fixed thresholds counted per year at Tweefontein (SF001727240): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tweefontein Thresholds

Tweefontein: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1974 with 33.
Tweefontein: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1974 with 11.
Tweefontein: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1950 with 3.
3 fixed thresholds have at least one qualifying day at Tweefontein.

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

73 years with a qualifying day

Days per year at Tweefontein with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Tweefontein
Year	Days	Decade average
1920	17	14.3
1921	19	14.3
1922	8	14.3
1923	19	14.3
1926	8	14.3
1927	12	14.3
1928	15	14.3
1929	16	14.3
1930	11	11.2
1931	14	11.2
1932	6	11.2
1933	7	11.2
1934	15	11.2
1936	14	11.2
1937	9	11.2
1938	12	11.2
1939	13	11.2
1940	13	14.1
1941	16	14.1
1942	15	14.1
1943	21	14.1
1944	12	14.1
1945	6	14.1
1946	17	14.1
1947	13	14.1
1948	18	14.1
1949	10	14.1
1950	25	12.8
1951	2	12.8
1952	9	12.8
1953	10	12.8
1954	6	12.8
1955	15	12.8
1956	11	12.8
1957	18	12.8
1958	19	12.8
1959	13	12.8
1960	12	13.5
1961	16	13.5
1962	15	13.5
1963	22	13.5
1964	11	13.5
1965	11	13.5
1966	11	13.5
1967	16	13.5
1968	11	13.5
1969	10	13.5
1970	7	16
1971	14	16
1972	13	16
1973	14	16
1974	33	16
1975	16	16
1976	23	16
1977	17	16
1978	11	16
1979	12	16
1980	11	13.5
1981	15	13.5
1982	18	13.5
1984	3	13.5
1985	20	13.5
1987	10	13.5
1988	19	13.5
1989	12	13.5
1990	7	10.6
1991	21	10.6
1992	7	10.6
1993	11	10.6
1994	8	10.6
1995	11	10.6
1996	11	10.6
1997	9	10.6

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

First to last qualifying date each year at Tweefontein
Year	First date	Last date
1920	1920-01-29	1920-12-18
1921	1921-02-03	1921-12-08
1922	1922-01-25	1922-12-19
1923	1923-01-14	1923-12-17
1926	1926-03-05	1926-11-17
1927	1927-02-24	1927-12-27
1928	1928-01-04	1928-12-24
1929	1929-03-04	1929-12-30
1930	1930-01-16	1930-11-12
1931	1931-01-14	1931-12-31
1932	1932-02-08	1932-09-17
1933	1933-03-04	1933-12-26
1934	1934-01-02	1934-11-28
1936	1936-03-21	1936-12-27
1937	1937-01-21	1937-12-16
1938	1938-01-25	1938-12-18
1939	1939-01-17	1939-11-04
1940	1940-01-28	1940-11-09
1941	1941-01-25	1941-09-28
1942	1942-01-24	1942-12-26
1943	1943-02-12	1943-12-31
1944	1944-01-02	1944-10-27
1945	1945-01-06	1945-12-30
1946	1946-01-19	1946-11-25
1947	1947-01-14	1947-12-24
1948	1948-01-23	1948-12-07
1949	1949-02-26	1949-12-23
1950	1950-01-04	1950-12-31
1951	1951-03-20	1951-10-01
1952	1952-02-06	1952-11-02
1953	1953-02-22	1953-12-19
1954	1954-03-05	1954-11-04
1955	1955-01-04	1955-12-19
1956	1956-01-17	1956-12-07
1957	1957-01-31	1957-12-30
1958	1958-01-02	1958-12-28
1959	1959-01-24	1959-12-08
1960	1960-02-25	1960-12-18
1961	1961-01-02	1961-12-16
1962	1962-01-17	1962-12-03
1963	1963-01-03	1963-12-08
1964	1964-03-31	1964-12-27
1965	1965-01-14	1965-11-16
1966	1966-01-08	1966-11-10
1967	1967-01-18	1967-10-31
1968	1968-03-05	1968-12-08
1969	1969-02-26	1969-10-20
1970	1970-01-17	1970-10-11
1971	1971-01-10	1971-10-14
1972	1972-01-07	1972-10-13
1973	1973-01-04	1973-12-30
1974	1974-01-08	1974-11-08
1975	1975-01-22	1975-12-27
1976	1976-01-05	1976-11-04
1977	1977-02-04	1977-12-29
1978	1978-01-07	1978-11-10
1979	1979-01-26	1979-12-21
1980	1980-01-21	1980-12-13
1981	1981-01-24	1981-12-10
1982	1982-01-28	1982-12-04
1984	1984-01-06	1984-12-23
1985	1985-01-15	1985-12-22
1987	1987-02-09	1987-11-29
1988	1988-02-06	1988-12-18
1989	1989-01-01	1989-11-14
1990	1990-01-15	1990-06-27
1991	1991-01-20	1991-12-19
1992	1992-03-15	1992-10-30
1993	1993-01-26	1993-11-24
1994	1994-01-08	1994-03-06
1995	1995-02-18	1995-12-21
1996	1996-01-22	1996-12-28
1997	1997-01-19	1997-06-11

Every Fixed Threshold

Fixed thresholds at Tweefontein
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	73	33	1974	9
25 mm (0.98 in): Days with 25 mm or more rain	65	11	1974	3
50 mm (1.97 in): Days with 50 mm or more rain	24	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 1920.

Download the Data

Data for Tweefontein 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).

Tweefontein Threshold Days by Year (SF001727240)

Key Facts for Tweefontein Thresholds

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

Every Fixed Threshold

Download the Data

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