Grootdoornrivier Threshold Days by Year (SF000284070)
4 fixed thresholds counted per year at Grootdoornrivier (SF000284070): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grootdoornrivier Thresholds
- Grootdoornrivier: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1981 with 14.
- Grootdoornrivier: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1954 with 6.
- Grootdoornrivier: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1932 with 2.
- Grootdoornrivier: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1932 with 1.
- 4 fixed thresholds have at least one qualifying day at Grootdoornrivier.
Days with 10 mm (0.39 in) or more of precipitation
69 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1927 | 2 | 4.7 |
| 1928 | 3 | 4.7 |
| 1929 | 9 | 4.7 |
| 1930 | 5 | 6.3 |
| 1931 | 3 | 6.3 |
| 1932 | 11 | 6.3 |
| 1933 | 6 | 6.3 |
| 1934 | 6 | 6.3 |
| 1935 | 9 | 6.3 |
| 1936 | 8 | 6.3 |
| 1937 | 5 | 6.3 |
| 1938 | 6 | 6.3 |
| 1939 | 4 | 6.3 |
| 1941 | 11 | 7.3 |
| 1942 | 6 | 7.3 |
| 1943 | 6 | 7.3 |
| 1944 | 8 | 7.3 |
| 1945 | 9 | 7.3 |
| 1946 | 4 | 7.3 |
| 1947 | 8 | 7.3 |
| 1948 | 7 | 7.3 |
| 1949 | 7 | 7.3 |
| 1950 | 7 | 7.7 |
| 1951 | 8 | 7.7 |
| 1952 | 7 | 7.7 |
| 1953 | 12 | 7.7 |
| 1954 | 9 | 7.7 |
| 1955 | 12 | 7.7 |
| 1956 | 7 | 7.7 |
| 1957 | 4 | 7.7 |
| 1958 | 4 | 7.7 |
| 1959 | 7 | 7.7 |
| 1960 | 4 | 7.9 |
| 1961 | 7 | 7.9 |
| 1962 | 6 | 7.9 |
| 1963 | 6 | 7.9 |
| 1964 | 12 | 7.9 |
| 1965 | 10 | 7.9 |
| 1967 | 9 | 7.9 |
| 1968 | 11 | 7.9 |
| 1969 | 6 | 7.9 |
| 1970 | 4 | 7.7 |
| 1971 | 12 | 7.7 |
| 1972 | 8 | 7.7 |
| 1973 | 3 | 7.7 |
| 1974 | 6 | 7.7 |
| 1975 | 8 | 7.7 |
| 1976 | 10 | 7.7 |
| 1977 | 11 | 7.7 |
| 1978 | 5 | 7.7 |
| 1979 | 10 | 7.7 |
| 1980 | 4 | 7.5 |
| 1981 | 14 | 7.5 |
| 1982 | 8 | 7.5 |
| 1983 | 8 | 7.5 |
| 1984 | 5 | 7.5 |
| 1985 | 7 | 7.5 |
| 1986 | 12 | 7.5 |
| 1987 | 5 | 7.5 |
| 1988 | 4 | 7.5 |
| 1989 | 8 | 7.5 |
| 1990 | 3 | 7.6 |
| 1991 | 6 | 7.6 |
| 1992 | 9 | 7.6 |
| 1993 | 10 | 7.6 |
| 1994 | 8 | 7.6 |
| 1995 | 9 | 7.6 |
| 1996 | 10 | 7.6 |
| 1997 | 6 | 7.6 |
| Year | First date | Last date |
|---|---|---|
| 1927 | 1927-05-16 | 1927-08-26 |
| 1928 | 1928-03-27 | 1928-11-24 |
| 1929 | 1929-03-07 | 1929-12-31 |
| 1930 | 1930-02-14 | 1930-09-11 |
| 1931 | 1931-03-30 | 1931-12-30 |
| 1932 | 1932-01-01 | 1932-10-25 |
| 1933 | 1933-03-21 | 1933-11-27 |
| 1934 | 1934-01-25 | 1934-11-12 |
| 1935 | 1935-03-01 | 1935-11-09 |
| 1936 | 1936-01-17 | 1936-12-04 |
| 1937 | 1937-07-04 | 1937-12-17 |
| 1938 | 1938-03-26 | 1938-11-15 |
| 1939 | 1939-03-17 | 1939-08-22 |
| 1941 | 1941-01-07 | 1941-12-23 |
| 1942 | 1942-03-06 | 1942-11-08 |
| 1943 | 1943-01-22 | 1943-12-14 |
| 1944 | 1944-05-12 | 1944-09-12 |
| 1945 | 1945-05-22 | 1945-10-14 |
| 1946 | 1946-03-22 | 1946-10-14 |
| 1947 | 1947-03-22 | 1947-09-16 |
| 1948 | 1948-01-22 | 1948-10-13 |
| 1949 | 1949-03-19 | 1949-11-16 |
| 1950 | 1950-07-05 | 1950-12-08 |
| 1951 | 1951-01-12 | 1951-09-03 |
| 1952 | 1952-06-21 | 1952-11-14 |
| 1953 | 1953-02-07 | 1953-12-20 |
| 1954 | 1954-04-24 | 1954-11-20 |
| 1955 | 1955-02-02 | 1955-11-29 |
| 1956 | 1956-01-16 | 1956-12-19 |
| 1957 | 1957-02-21 | 1957-09-12 |
| 1958 | 1958-05-04 | 1958-12-22 |
| 1959 | 1959-01-11 | 1959-12-21 |
| 1960 | 1960-01-04 | 1960-11-13 |
| 1961 | 1961-02-10 | 1961-09-05 |
| 1962 | 1962-01-18 | 1962-08-21 |
| 1963 | 1963-03-28 | 1963-12-07 |
| 1964 | 1964-02-01 | 1964-11-06 |
| 1965 | 1965-02-17 | 1965-12-17 |
| 1967 | 1967-03-07 | 1967-07-12 |
| 1968 | 1968-04-06 | 1968-12-22 |
| 1969 | 1969-03-24 | 1969-09-11 |
| 1970 | 1970-08-25 | 1970-12-06 |
| 1971 | 1971-03-18 | 1971-10-22 |
| 1972 | 1972-02-04 | 1972-11-02 |
| 1973 | 1973-04-22 | 1973-10-24 |
| 1974 | 1974-01-26 | 1974-11-02 |
| 1975 | 1975-01-31 | 1975-12-27 |
| 1976 | 1976-01-20 | 1976-12-30 |
| 1977 | 1977-02-11 | 1977-10-02 |
| 1978 | 1978-01-09 | 1978-12-09 |
| 1979 | 1979-01-01 | 1979-09-15 |
| 1980 | 1980-06-28 | 1980-12-01 |
| 1981 | 1981-01-23 | 1981-10-15 |
| 1982 | 1982-01-15 | 1982-10-11 |
| 1983 | 1983-06-11 | 1983-10-02 |
| 1984 | 1984-03-11 | 1984-12-04 |
| 1985 | 1985-02-06 | 1985-12-19 |
| 1986 | 1986-01-03 | 1986-10-30 |
| 1987 | 1987-04-14 | 1987-12-22 |
| 1988 | 1988-04-07 | 1988-12-19 |
| 1989 | 1989-01-29 | 1989-11-14 |
| 1990 | 1990-02-20 | 1990-04-28 |
| 1991 | 1991-01-26 | 1991-10-29 |
| 1992 | 1992-02-11 | 1992-11-07 |
| 1993 | 1993-02-19 | 1993-12-13 |
| 1994 | 1994-03-05 | 1994-12-22 |
| 1995 | 1995-03-23 | 1995-12-22 |
| 1996 | 1996-02-12 | 1996-11-20 |
| 1997 | 1997-03-18 | 1997-10-25 |
Every Fixed Threshold
| 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 | 69 | 14 | 1981 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 53 | 6 | 1954 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 17 | 2 | 1932 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1932 | 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
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 . Last revised (2025-12-31).