Grootfontein Threshold Days by Year (SF000896930)
3 fixed thresholds counted per year at Grootfontein (SF000896930): 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 66 years, most in 1976 with 16.
- Grootfontein: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1961 with 4.
- Grootfontein: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1948 with 2.
- 3 fixed thresholds have at least one qualifying day at Grootfontein.
Days with 10 mm (0.39 in) or more of precipitation
66 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1931 | 4 | 6.3 |
| 1932 | 7 | 6.3 |
| 1933 | 3 | 6.3 |
| 1934 | 7 | 6.3 |
| 1935 | 7 | 6.3 |
| 1937 | 6 | 6.3 |
| 1938 | 6 | 6.3 |
| 1939 | 10 | 6.3 |
| 1940 | 8 | 5 |
| 1941 | 8 | 5 |
| 1942 | 3 | 5 |
| 1943 | 6 | 5 |
| 1944 | 5 | 5 |
| 1945 | 3 | 5 |
| 1946 | 4 | 5 |
| 1947 | 4 | 5 |
| 1948 | 7 | 5 |
| 1949 | 2 | 5 |
| 1950 | 12 | 6.4 |
| 1951 | 1 | 6.4 |
| 1952 | 5 | 6.4 |
| 1953 | 8 | 6.4 |
| 1954 | 9 | 6.4 |
| 1955 | 5 | 6.4 |
| 1956 | 8 | 6.4 |
| 1957 | 8 | 6.4 |
| 1958 | 3 | 6.4 |
| 1959 | 5 | 6.4 |
| 1960 | 3 | 5.4 |
| 1961 | 9 | 5.4 |
| 1962 | 4 | 5.4 |
| 1963 | 5 | 5.4 |
| 1964 | 5 | 5.4 |
| 1965 | 8 | 5.4 |
| 1966 | 1 | 5.4 |
| 1967 | 8 | 5.4 |
| 1968 | 5 | 5.4 |
| 1969 | 6 | 5.4 |
| 1970 | 4 | 7.6 |
| 1971 | 8 | 7.6 |
| 1972 | 4 | 7.6 |
| 1973 | 9 | 7.6 |
| 1974 | 11 | 7.6 |
| 1975 | 6 | 7.6 |
| 1976 | 16 | 7.6 |
| 1977 | 9 | 7.6 |
| 1978 | 5 | 7.6 |
| 1979 | 4 | 7.6 |
| 1980 | 4 | 5.3 |
| 1981 | 10 | 5.3 |
| 1982 | 5 | 5.3 |
| 1983 | 2 | 5.3 |
| 1984 | 5 | 5.3 |
| 1985 | 7 | 5.3 |
| 1986 | 6 | 5.3 |
| 1987 | 1 | 5.3 |
| 1988 | 9 | 5.3 |
| 1989 | 4 | 5.3 |
| 1990 | 10 | 7.1 |
| 1991 | 6 | 7.1 |
| 1992 | 2 | 7.1 |
| 1993 | 8 | 7.1 |
| 1994 | 3 | 7.1 |
| 1995 | 9 | 7.1 |
| 1996 | 11 | 7.1 |
| 1997 | 8 | 7.1 |
| Year | First date | Last date |
|---|---|---|
| 1931 | 1931-04-15 | 1931-11-08 |
| 1932 | 1932-02-08 | 1932-12-31 |
| 1933 | 1933-03-18 | 1933-12-21 |
| 1934 | 1934-01-02 | 1934-11-18 |
| 1935 | 1935-02-28 | 1935-11-02 |
| 1937 | 1937-01-25 | 1937-12-18 |
| 1938 | 1938-03-25 | 1938-11-08 |
| 1939 | 1939-01-31 | 1939-08-21 |
| 1940 | 1940-01-18 | 1940-11-09 |
| 1941 | 1941-01-05 | 1941-10-29 |
| 1942 | 1942-03-01 | 1942-12-04 |
| 1943 | 1943-02-18 | 1943-11-30 |
| 1944 | 1944-01-04 | 1944-09-10 |
| 1945 | 1945-03-07 | 1945-07-07 |
| 1946 | 1946-04-03 | 1946-09-03 |
| 1947 | 1947-03-21 | 1947-12-03 |
| 1948 | 1948-02-26 | 1948-12-17 |
| 1949 | 1949-05-28 | 1949-11-01 |
| 1950 | 1950-02-24 | 1950-11-30 |
| 1951 | 1951-05-23 | 1951-05-23 |
| 1952 | 1952-02-17 | 1952-11-15 |
| 1953 | 1953-02-23 | 1953-12-20 |
| 1954 | 1954-03-13 | 1954-11-05 |
| 1955 | 1955-04-21 | 1955-12-18 |
| 1956 | 1956-02-08 | 1956-12-06 |
| 1957 | 1957-02-21 | 1957-12-30 |
| 1958 | 1958-04-18 | 1958-12-14 |
| 1959 | 1959-02-12 | 1959-12-12 |
| 1960 | 1960-03-15 | 1960-12-19 |
| 1961 | 1961-03-20 | 1961-07-30 |
| 1962 | 1962-01-18 | 1962-08-09 |
| 1963 | 1963-05-11 | 1963-12-07 |
| 1964 | 1964-02-01 | 1964-11-04 |
| 1965 | 1965-03-22 | 1965-07-16 |
| 1966 | 1966-03-20 | 1966-03-20 |
| 1967 | 1967-02-17 | 1967-10-30 |
| 1968 | 1968-03-28 | 1968-10-22 |
| 1969 | 1969-02-23 | 1969-10-20 |
| 1970 | 1970-02-05 | 1970-12-05 |
| 1971 | 1971-03-18 | 1971-08-20 |
| 1972 | 1972-01-05 | 1972-03-18 |
| 1973 | 1973-03-17 | 1973-12-22 |
| 1974 | 1974-01-15 | 1974-11-02 |
| 1975 | 1975-01-30 | 1975-12-22 |
| 1976 | 1976-01-19 | 1976-11-05 |
| 1977 | 1977-02-11 | 1977-12-30 |
| 1978 | 1978-01-08 | 1978-08-24 |
| 1979 | 1979-03-15 | 1979-11-17 |
| 1980 | 1980-02-20 | 1980-12-11 |
| 1981 | 1981-01-23 | 1981-10-14 |
| 1982 | 1982-04-03 | 1982-10-10 |
| 1983 | 1983-06-15 | 1983-11-02 |
| 1984 | 1984-01-11 | 1984-10-09 |
| 1985 | 1985-01-12 | 1985-12-04 |
| 1986 | 1986-01-17 | 1986-06-19 |
| 1987 | 1987-04-19 | 1987-04-19 |
| 1988 | 1988-02-15 | 1988-12-23 |
| 1989 | 1989-02-06 | 1989-04-20 |
| 1990 | 1990-01-30 | 1990-12-16 |
| 1991 | 1991-01-25 | 1991-12-30 |
| 1992 | 1992-03-26 | 1992-07-21 |
| 1993 | 1993-02-18 | 1993-11-09 |
| 1994 | 1994-02-12 | 1994-07-24 |
| 1995 | 1995-01-12 | 1995-12-16 |
| 1996 | 1996-02-26 | 1996-12-27 |
| 1997 | 1997-03-14 | 1997-06-26 |
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 | 66 | 16 | 1976 | 8 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 46 | 4 | 1961 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 12 | 2 | 1948 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.
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).