Rietpoort Threshold Days by Year (SF004066070)

4 fixed thresholds counted per year at Rietpoort (SF004066070): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rietpoort Thresholds

Rietpoort: days with 10 mm (0.39 in) or more of precipitation in 89 years, most in 1924 with 41.
Rietpoort: days with 25 mm (0.98 in) or more of precipitation in 89 years, most in 1909 with 16.
Rietpoort: days with 50 mm (1.97 in) or more of precipitation in 52 years, most in 1910 with 3.
Rietpoort: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1936 with 1.
4 fixed thresholds have at least one qualifying day at Rietpoort.

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

89 years with a qualifying day

Days per year at Rietpoort with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1924.

Days with 10 mm (0.39 in) or more of precipitation per year at Rietpoort
Year	Days	Decade average
1907	36	30.3
1908	26	30.3
1909	29	30.3
1910	30	26.6
1911	25	26.6
1912	17	26.6
1913	24	26.6
1914	20	26.6
1915	33	26.6
1916	20	26.6
1917	37	26.6
1918	36	26.6
1919	24	26.6
1920	28	27.5
1921	35	27.5
1922	28	27.5
1923	17	27.5
1924	41	27.5
1925	23	27.5
1926	23	27.5
1927	20	27.5
1928	27	27.5
1929	33	27.5
1930	15	24.2
1931	20	24.2
1932	24	24.2
1933	24	24.2
1934	25	24.2
1935	22	24.2
1936	28	24.2
1937	22	24.2
1938	25	24.2
1939	37	24.2
1940	28	25.8
1941	23	25.8
1942	30	25.8
1943	29	25.8
1944	21	25.8
1945	13	25.8
1946	26	25.8
1947	25	25.8
1948	28	25.8
1949	35	25.8
1950	23	21.4
1951	18	21.4
1952	19	21.4
1953	13	21.4
1954	11	21.4
1955	24	21.4
1956	29	21.4
1957	28	21.4
1958	26	21.4
1959	23	21.4
1960	26	26.9
1961	31	26.9
1962	22	26.9
1963	24	26.9
1964	32	26.9
1965	24	26.9
1966	17	26.9
1967	30	26.9
1968	23	26.9
1969	40	26.9
1970	25	26.1
1971	26	26.1
1972	11	26.1
1973	30	26.1
1974	30	26.1
1975	37	26.1
1976	22	26.1
1977	31	26.1
1978	30	26.1
1979	19	26.1
1980	22	24.5
1982	18	24.5
1984	25	24.5
1985	16	24.5
1986	30	24.5
1987	37	24.5
1988	22	24.5
1989	26	24.5
1990	22	27.4
1991	27	27.4
1992	21	27.4
1993	24	27.4
1994	23	27.4
1995	31	27.4
1996	38	27.4
1997	33	27.4

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

First to last qualifying date each year at Rietpoort
Year	First date	Last date
1907	1907-01-07	1907-12-16
1908	1908-01-21	1908-12-12
1909	1909-01-04	1909-12-25
1910	1910-01-10	1910-12-21
1911	1911-01-07	1911-12-29
1912	1912-01-01	1912-12-30
1913	1913-01-05	1913-12-11
1914	1914-01-22	1914-12-27
1915	1915-01-13	1915-12-24
1916	1916-01-14	1916-12-23
1917	1917-01-21	1917-12-31
1918	1918-01-03	1918-12-31
1919	1919-01-02	1919-12-27
1920	1920-01-05	1920-12-30
1921	1921-01-05	1921-12-21
1922	1922-01-13	1922-12-31
1923	1923-01-07	1923-12-28
1924	1924-01-09	1924-12-28
1925	1925-01-04	1925-12-17
1926	1926-01-08	1926-12-21
1927	1927-01-01	1927-11-25
1928	1928-01-01	1928-12-25
1929	1929-01-09	1929-12-19
1930	1930-01-10	1930-12-30
1931	1931-01-13	1931-12-18
1932	1932-01-13	1932-12-26
1933	1933-01-01	1933-12-31
1934	1934-01-13	1934-12-22
1935	1935-01-11	1935-12-31
1936	1936-01-01	1936-12-28
1937	1937-01-03	1937-12-21
1938	1938-01-22	1938-12-30
1939	1939-01-06	1939-12-26
1940	1940-01-09	1940-12-27
1941	1941-01-14	1941-12-24
1942	1942-01-04	1942-12-08
1943	1943-01-03	1943-12-26
1944	1944-01-03	1944-12-10
1945	1945-01-26	1945-11-28
1946	1946-01-07	1946-12-12
1947	1947-01-07	1947-12-25
1948	1948-01-01	1948-12-16
1949	1949-01-01	1949-12-30
1950	1950-01-01	1950-12-30
1951	1951-01-01	1951-12-22
1952	1952-01-02	1952-12-25
1953	1953-03-01	1953-12-17
1954	1954-02-02	1954-12-25
1955	1955-01-19	1955-12-30
1956	1956-01-12	1956-12-25
1957	1957-01-07	1957-12-09
1958	1958-01-03	1958-12-23
1959	1959-01-06	1959-12-18
1960	1960-01-22	1960-12-20
1961	1961-01-16	1961-12-26
1962	1962-01-08	1962-12-11
1963	1963-01-05	1963-12-20
1964	1964-01-04	1964-12-27
1965	1965-01-05	1965-12-27
1966	1966-01-14	1966-12-19
1967	1967-01-01	1967-12-21
1968	1968-01-19	1968-12-27
1969	1969-01-06	1969-12-30
1970	1970-01-03	1970-12-28
1971	1971-01-02	1971-12-10
1972	1972-01-03	1972-12-05
1973	1973-01-06	1973-12-31
1974	1974-01-01	1974-12-25
1975	1975-01-06	1975-12-28
1976	1976-01-18	1976-12-30
1977	1977-01-07	1977-12-31
1978	1978-01-01	1978-12-21
1979	1979-01-01	1979-12-23
1980	1980-01-11	1980-12-18
1982	1982-01-04	1982-12-31
1984	1984-01-07	1984-12-31
1985	1985-01-05	1985-12-21
1986	1986-01-03	1986-12-29
1987	1987-01-01	1987-12-23
1988	1988-01-07	1988-12-26
1989	1989-01-07	1989-12-22
1990	1990-01-07	1990-12-24
1991	1991-01-01	1991-12-26
1992	1992-01-08	1992-12-30
1993	1993-01-08	1993-12-09
1994	1994-01-03	1994-12-16
1995	1995-01-07	1995-12-25
1996	1996-01-08	1996-12-30
1997	1997-01-01	1997-11-29

Every Fixed Threshold

Fixed thresholds at Rietpoort
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	89	41	1924	33
25 mm (0.98 in): Days with 25 mm or more rain	89	16	1909	10
50 mm (1.97 in): Days with 50 mm or more rain	52	3	1910	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1936	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

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Data for Rietpoort 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).

Rietpoort Threshold Days by Year (SF004066070)

Key Facts for Rietpoort Thresholds

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

Every Fixed Threshold

Download the Data

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