Grootmodderfontein Threshold Days by Year (SF002243890)
4 fixed thresholds counted per year at Grootmodderfontein (SF002243890): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grootmodderfontein Thresholds
- Grootmodderfontein: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1974 with 26.
- Grootmodderfontein: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1957 with 6.
- Grootmodderfontein: days with 50 mm (1.97 in) or more of precipitation in 15 years, most in 1974 with 2.
- Grootmodderfontein: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1977 with 1.
- 4 fixed thresholds have at least one qualifying day at Grootmodderfontein.
Days with 10 mm (0.39 in) or more of precipitation
67 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1929 | 6 | 6 |
| 1930 | 3 | 6.9 |
| 1931 | 3 | 6.9 |
| 1932 | 5 | 6.9 |
| 1933 | 4 | 6.9 |
| 1934 | 14 | 6.9 |
| 1935 | 10 | 6.9 |
| 1936 | 5 | 6.9 |
| 1937 | 3 | 6.9 |
| 1938 | 15 | 6.9 |
| 1939 | 7 | 6.9 |
| 1940 | 6 | 5.4 |
| 1942 | 7 | 5.4 |
| 1943 | 7 | 5.4 |
| 1944 | 5 | 5.4 |
| 1945 | 4 | 5.4 |
| 1946 | 6 | 5.4 |
| 1947 | 4 | 5.4 |
| 1948 | 8 | 5.4 |
| 1949 | 2 | 5.4 |
| 1950 | 12 | 7.8 |
| 1951 | 4 | 7.8 |
| 1952 | 9 | 7.8 |
| 1953 | 7 | 7.8 |
| 1954 | 6 | 7.8 |
| 1955 | 8 | 7.8 |
| 1956 | 8 | 7.8 |
| 1957 | 11 | 7.8 |
| 1958 | 9 | 7.8 |
| 1959 | 4 | 7.8 |
| 1960 | 4 | 7.7 |
| 1961 | 12 | 7.7 |
| 1962 | 4 | 7.7 |
| 1963 | 16 | 7.7 |
| 1964 | 5 | 7.7 |
| 1965 | 8 | 7.7 |
| 1966 | 5 | 7.7 |
| 1967 | 11 | 7.7 |
| 1968 | 4 | 7.7 |
| 1969 | 8 | 7.7 |
| 1970 | 7 | 11.3 |
| 1971 | 7 | 11.3 |
| 1972 | 8 | 11.3 |
| 1973 | 7 | 11.3 |
| 1974 | 26 | 11.3 |
| 1975 | 15 | 11.3 |
| 1976 | 19 | 11.3 |
| 1977 | 8 | 11.3 |
| 1978 | 8 | 11.3 |
| 1979 | 8 | 11.3 |
| 1981 | 8 | 6.6 |
| 1982 | 5 | 6.6 |
| 1983 | 5 | 6.6 |
| 1984 | 2 | 6.6 |
| 1985 | 13 | 6.6 |
| 1986 | 5 | 6.6 |
| 1987 | 6 | 6.6 |
| 1988 | 10 | 6.6 |
| 1989 | 5 | 6.6 |
| 1990 | 10 | 7.8 |
| 1991 | 14 | 7.8 |
| 1992 | 2 | 7.8 |
| 1993 | 6 | 7.8 |
| 1994 | 9 | 7.8 |
| 1995 | 8 | 7.8 |
| 1996 | 7 | 7.8 |
| 1997 | 6 | 7.8 |
| Year | First date | Last date |
|---|---|---|
| 1929 | 1929-01-18 | 1929-12-11 |
| 1930 | 1930-03-25 | 1930-11-12 |
| 1931 | 1931-01-16 | 1931-04-14 |
| 1932 | 1932-02-27 | 1932-11-12 |
| 1933 | 1933-02-12 | 1933-12-14 |
| 1934 | 1934-01-05 | 1934-12-20 |
| 1935 | 1935-02-23 | 1935-11-02 |
| 1936 | 1936-02-25 | 1936-11-17 |
| 1937 | 1937-02-26 | 1937-12-23 |
| 1938 | 1938-01-10 | 1938-12-17 |
| 1939 | 1939-01-29 | 1939-10-25 |
| 1940 | 1940-02-28 | 1940-11-10 |
| 1942 | 1942-02-11 | 1942-12-03 |
| 1943 | 1943-04-06 | 1943-12-17 |
| 1944 | 1944-01-13 | 1944-10-27 |
| 1945 | 1945-01-06 | 1945-07-12 |
| 1946 | 1946-02-13 | 1946-11-25 |
| 1947 | 1947-03-22 | 1947-12-15 |
| 1948 | 1948-01-21 | 1948-10-11 |
| 1949 | 1949-03-20 | 1949-05-09 |
| 1950 | 1950-03-01 | 1950-11-29 |
| 1951 | 1951-01-02 | 1951-05-16 |
| 1952 | 1952-02-06 | 1952-12-13 |
| 1953 | 1953-01-14 | 1953-12-10 |
| 1954 | 1954-03-13 | 1954-04-01 |
| 1955 | 1955-01-30 | 1955-12-17 |
| 1956 | 1956-01-17 | 1956-12-07 |
| 1957 | 1957-01-26 | 1957-12-27 |
| 1958 | 1958-01-11 | 1958-12-31 |
| 1959 | 1959-02-12 | 1959-05-11 |
| 1960 | 1960-02-17 | 1960-08-19 |
| 1961 | 1961-01-02 | 1961-11-27 |
| 1962 | 1962-01-18 | 1962-11-17 |
| 1963 | 1963-01-01 | 1963-12-08 |
| 1964 | 1964-03-31 | 1964-10-19 |
| 1965 | 1965-03-28 | 1965-11-15 |
| 1966 | 1966-01-21 | 1966-12-19 |
| 1967 | 1967-01-30 | 1967-11-23 |
| 1968 | 1968-03-08 | 1968-04-16 |
| 1969 | 1969-02-23 | 1969-10-18 |
| 1970 | 1970-02-02 | 1970-12-21 |
| 1971 | 1971-02-06 | 1971-10-14 |
| 1972 | 1972-01-07 | 1972-10-04 |
| 1973 | 1973-02-17 | 1973-12-29 |
| 1974 | 1974-01-08 | 1974-12-18 |
| 1975 | 1975-01-30 | 1975-12-19 |
| 1976 | 1976-01-03 | 1976-11-03 |
| 1977 | 1977-01-28 | 1977-12-30 |
| 1978 | 1978-01-08 | 1978-08-26 |
| 1979 | 1979-01-18 | 1979-11-11 |
| 1981 | 1981-02-27 | 1981-12-07 |
| 1982 | 1982-02-21 | 1982-12-05 |
| 1983 | 1983-04-08 | 1983-12-28 |
| 1984 | 1984-04-07 | 1984-10-10 |
| 1985 | 1985-01-14 | 1985-12-19 |
| 1986 | 1986-01-18 | 1986-04-26 |
| 1987 | 1987-03-19 | 1987-12-21 |
| 1988 | 1988-02-15 | 1988-12-28 |
| 1989 | 1989-01-01 | 1989-03-24 |
| 1990 | 1990-01-15 | 1990-06-27 |
| 1991 | 1991-01-26 | 1991-12-18 |
| 1992 | 1992-03-27 | 1992-08-27 |
| 1993 | 1993-02-11 | 1993-12-23 |
| 1994 | 1994-01-09 | 1994-11-03 |
| 1995 | 1995-01-21 | 1995-12-17 |
| 1996 | 1996-01-18 | 1996-12-27 |
| 1997 | 1997-03-15 | 1997-06-11 |
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 | 67 | 26 | 1974 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 58 | 6 | 1957 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 15 | 2 | 1974 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1977 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1929.
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).