Grootfontein Threshold Days by Year (SF000901760)
3 fixed thresholds counted per year at Grootfontein (SF000901760): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grootfontein Thresholds
- Grootfontein: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1921 with 18.
- Grootfontein: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 1981 with 7.
- Grootfontein: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1961 with 3.
- 3 fixed thresholds have at least one qualifying day at Grootfontein.
Days with 10 mm (0.39 in) or more of precipitation
73 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1914 | 7 | 6 |
| 1915 | 4 | 6 |
| 1916 | 5 | 6 |
| 1917 | 8 | 6 |
| 1918 | 6 | 6 |
| 1919 | 6 | 6 |
| 1920 | 3 | 6.4 |
| 1921 | 18 | 6.4 |
| 1922 | 7 | 6.4 |
| 1923 | 6 | 6.4 |
| 1924 | 4 | 6.4 |
| 1925 | 5 | 6.4 |
| 1926 | 2 | 6.4 |
| 1930 | 5 | 5 |
| 1931 | 8 | 5 |
| 1932 | 3 | 5 |
| 1933 | 3 | 5 |
| 1934 | 5 | 5 |
| 1937 | 7 | 5 |
| 1938 | 4 | 5 |
| 1944 | 1 | 2.7 |
| 1945 | 1 | 2.7 |
| 1946 | 2 | 2.7 |
| 1947 | 4 | 2.7 |
| 1948 | 5 | 2.7 |
| 1949 | 3 | 2.7 |
| 1950 | 7 | 4.6 |
| 1951 | 1 | 4.6 |
| 1952 | 3 | 4.6 |
| 1953 | 7 | 4.6 |
| 1954 | 3 | 4.6 |
| 1955 | 3 | 4.6 |
| 1956 | 12 | 4.6 |
| 1957 | 4 | 4.6 |
| 1958 | 3 | 4.6 |
| 1959 | 3 | 4.6 |
| 1960 | 1 | 2.4 |
| 1961 | 5 | 2.4 |
| 1962 | 1 | 2.4 |
| 1963 | 1 | 2.4 |
| 1964 | 2 | 2.4 |
| 1965 | 4 | 2.4 |
| 1966 | 4 | 2.4 |
| 1967 | 4 | 2.4 |
| 1968 | 1 | 2.4 |
| 1969 | 1 | 2.4 |
| 1970 | 3 | 6.7 |
| 1971 | 11 | 6.7 |
| 1972 | 3 | 6.7 |
| 1973 | 6 | 6.7 |
| 1974 | 12 | 6.7 |
| 1976 | 12 | 6.7 |
| 1977 | 3 | 6.7 |
| 1978 | 4 | 6.7 |
| 1979 | 6 | 6.7 |
| 1980 | 8 | 7.6 |
| 1981 | 16 | 7.6 |
| 1982 | 5 | 7.6 |
| 1983 | 4 | 7.6 |
| 1984 | 6 | 7.6 |
| 1985 | 14 | 7.6 |
| 1986 | 5 | 7.6 |
| 1987 | 4 | 7.6 |
| 1988 | 7 | 7.6 |
| 1989 | 7 | 7.6 |
| 1990 | 10 | 6.5 |
| 1991 | 6 | 6.5 |
| 1992 | 6 | 6.5 |
| 1993 | 4 | 6.5 |
| 1994 | 5 | 6.5 |
| 1995 | 8 | 6.5 |
| 1996 | 7 | 6.5 |
| 1997 | 6 | 6.5 |
| Year | First date | Last date |
|---|---|---|
| 1914 | 1914-03-11 | 1914-12-03 |
| 1915 | 1915-01-03 | 1915-12-29 |
| 1916 | 1916-03-02 | 1916-12-18 |
| 1917 | 1917-03-13 | 1917-10-22 |
| 1918 | 1918-01-01 | 1918-10-20 |
| 1919 | 1919-03-14 | 1919-11-23 |
| 1920 | 1920-01-29 | 1920-12-18 |
| 1921 | 1921-02-02 | 1921-12-28 |
| 1922 | 1922-01-11 | 1922-11-05 |
| 1923 | 1923-01-15 | 1923-11-13 |
| 1924 | 1924-01-10 | 1924-12-03 |
| 1925 | 1925-02-23 | 1925-05-30 |
| 1926 | 1926-05-04 | 1926-09-23 |
| 1930 | 1930-01-15 | 1930-05-29 |
| 1931 | 1931-01-03 | 1931-12-30 |
| 1932 | 1932-02-26 | 1932-09-16 |
| 1933 | 1933-08-28 | 1933-10-09 |
| 1934 | 1934-02-12 | 1934-10-09 |
| 1937 | 1937-02-25 | 1937-12-20 |
| 1938 | 1938-03-25 | 1938-12-11 |
| 1944 | 1944-09-11 | 1944-09-11 |
| 1945 | 1945-03-11 | 1945-03-11 |
| 1946 | 1946-03-22 | 1946-12-28 |
| 1947 | 1947-03-03 | 1947-12-03 |
| 1948 | 1948-01-29 | 1948-10-11 |
| 1949 | 1949-02-26 | 1949-11-17 |
| 1950 | 1950-03-11 | 1950-11-29 |
| 1951 | 1951-01-11 | 1951-01-11 |
| 1952 | 1952-02-19 | 1952-12-14 |
| 1953 | 1953-02-22 | 1953-12-20 |
| 1954 | 1954-03-13 | 1954-11-04 |
| 1955 | 1955-03-29 | 1955-11-29 |
| 1956 | 1956-01-16 | 1956-12-21 |
| 1957 | 1957-02-21 | 1957-09-12 |
| 1958 | 1958-04-18 | 1958-11-09 |
| 1959 | 1959-02-12 | 1959-10-08 |
| 1960 | 1960-12-19 | 1960-12-19 |
| 1961 | 1961-03-11 | 1961-07-27 |
| 1962 | 1962-01-19 | 1962-01-19 |
| 1963 | 1963-01-14 | 1963-01-14 |
| 1964 | 1964-09-15 | 1964-12-02 |
| 1965 | 1965-04-02 | 1965-11-04 |
| 1966 | 1966-02-01 | 1966-12-20 |
| 1967 | 1967-03-23 | 1967-05-26 |
| 1968 | 1968-03-29 | 1968-03-29 |
| 1969 | 1969-02-25 | 1969-02-25 |
| 1970 | 1970-08-25 | 1970-12-05 |
| 1971 | 1971-02-10 | 1971-12-28 |
| 1972 | 1972-01-05 | 1972-03-17 |
| 1973 | 1973-03-17 | 1973-10-21 |
| 1974 | 1974-01-15 | 1974-12-16 |
| 1976 | 1976-01-05 | 1976-11-05 |
| 1977 | 1977-01-31 | 1977-04-12 |
| 1978 | 1978-03-25 | 1978-12-08 |
| 1979 | 1979-01-26 | 1979-08-19 |
| 1980 | 1980-02-05 | 1980-12-14 |
| 1981 | 1981-01-23 | 1981-12-05 |
| 1982 | 1982-04-04 | 1982-11-15 |
| 1983 | 1983-04-08 | 1983-10-02 |
| 1984 | 1984-01-12 | 1984-10-24 |
| 1985 | 1985-01-12 | 1985-12-19 |
| 1986 | 1986-04-24 | 1986-11-25 |
| 1987 | 1987-02-14 | 1987-09-26 |
| 1988 | 1988-02-06 | 1988-04-05 |
| 1989 | 1989-04-12 | 1989-12-10 |
| 1990 | 1990-01-30 | 1990-12-04 |
| 1991 | 1991-01-26 | 1991-11-26 |
| 1992 | 1992-02-11 | 1992-11-07 |
| 1993 | 1993-02-09 | 1993-12-13 |
| 1994 | 1994-03-02 | 1994-10-20 |
| 1995 | 1995-02-27 | 1995-12-17 |
| 1996 | 1996-02-28 | 1996-11-16 |
| 1997 | 1997-01-28 | 1997-06-08 |
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 | 73 | 18 | 1921 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 49 | 7 | 1981 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 12 | 3 | 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 1914.
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).