Grootfontein Threshold Days by Year (SF001373370)
3 fixed thresholds counted per year at Grootfontein (SF001373370): 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 65 years, most in 1976 with 17.
- Grootfontein: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1974 with 6.
- Grootfontein: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1965 with 2.
- 3 fixed thresholds have at least one qualifying day at Grootfontein.
Days with 10 mm (0.39 in) or more of precipitation
65 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1931 | 4 | 5.3 |
| 1932 | 4 | 5.3 |
| 1933 | 3 | 5.3 |
| 1934 | 8 | 5.3 |
| 1935 | 6 | 5.3 |
| 1936 | 7 | 5.3 |
| 1937 | 1 | 5.3 |
| 1938 | 6 | 5.3 |
| 1939 | 9 | 5.3 |
| 1940 | 7 | 4.2 |
| 1941 | 7 | 4.2 |
| 1942 | 2 | 4.2 |
| 1943 | 5 | 4.2 |
| 1944 | 3 | 4.2 |
| 1945 | 1 | 4.2 |
| 1946 | 5 | 4.2 |
| 1947 | 4 | 4.2 |
| 1948 | 4 | 4.2 |
| 1949 | 4 | 4.2 |
| 1950 | 8 | 6.1 |
| 1951 | 2 | 6.1 |
| 1952 | 7 | 6.1 |
| 1953 | 7 | 6.1 |
| 1954 | 7 | 6.1 |
| 1955 | 7 | 6.1 |
| 1956 | 9 | 6.1 |
| 1957 | 5 | 6.1 |
| 1958 | 6 | 6.1 |
| 1959 | 3 | 6.1 |
| 1960 | 2 | 5.5 |
| 1961 | 10 | 5.5 |
| 1962 | 2 | 5.5 |
| 1963 | 6 | 5.5 |
| 1964 | 6 | 5.5 |
| 1965 | 4 | 5.5 |
| 1966 | 2 | 5.5 |
| 1967 | 8 | 5.5 |
| 1968 | 5 | 5.5 |
| 1969 | 10 | 5.5 |
| 1970 | 6 | 8.6 |
| 1971 | 10 | 8.6 |
| 1972 | 4 | 8.6 |
| 1973 | 9 | 8.6 |
| 1974 | 15 | 8.6 |
| 1975 | 6 | 8.6 |
| 1976 | 17 | 8.6 |
| 1977 | 9 | 8.6 |
| 1979 | 1 | 8.6 |
| 1980 | 3 | 7 |
| 1981 | 8 | 7 |
| 1982 | 7 | 7 |
| 1983 | 3 | 7 |
| 1984 | 3 | 7 |
| 1985 | 14 | 7 |
| 1986 | 4 | 7 |
| 1987 | 5 | 7 |
| 1988 | 15 | 7 |
| 1989 | 8 | 7 |
| 1990 | 6 | 7.1 |
| 1991 | 5 | 7.1 |
| 1993 | 9 | 7.1 |
| 1994 | 4 | 7.1 |
| 1995 | 12 | 7.1 |
| 1996 | 9 | 7.1 |
| 1997 | 5 | 7.1 |
| Year | First date | Last date |
|---|---|---|
| 1931 | 1931-01-15 | 1931-12-31 |
| 1932 | 1932-05-29 | 1932-11-07 |
| 1933 | 1933-11-09 | 1933-12-21 |
| 1934 | 1934-02-17 | 1934-12-20 |
| 1935 | 1935-02-23 | 1935-06-12 |
| 1936 | 1936-02-26 | 1936-12-02 |
| 1937 | 1937-01-26 | 1937-01-26 |
| 1938 | 1938-01-28 | 1938-07-06 |
| 1939 | 1939-01-30 | 1939-08-23 |
| 1940 | 1940-01-19 | 1940-11-09 |
| 1941 | 1941-01-05 | 1941-12-22 |
| 1942 | 1942-10-02 | 1942-10-10 |
| 1943 | 1943-04-14 | 1943-11-29 |
| 1944 | 1944-03-07 | 1944-10-21 |
| 1945 | 1945-12-04 | 1945-12-04 |
| 1946 | 1946-02-11 | 1946-09-02 |
| 1947 | 1947-03-21 | 1947-11-22 |
| 1948 | 1948-02-29 | 1948-10-10 |
| 1949 | 1949-03-19 | 1949-11-11 |
| 1950 | 1950-01-05 | 1950-11-30 |
| 1951 | 1951-02-15 | 1951-05-15 |
| 1952 | 1952-02-06 | 1952-11-14 |
| 1953 | 1953-02-22 | 1953-12-19 |
| 1954 | 1954-03-10 | 1954-11-05 |
| 1955 | 1955-01-30 | 1955-11-29 |
| 1956 | 1956-02-09 | 1956-12-06 |
| 1957 | 1957-01-30 | 1957-09-12 |
| 1958 | 1958-01-11 | 1958-12-25 |
| 1959 | 1959-02-12 | 1959-10-08 |
| 1960 | 1960-03-15 | 1960-03-29 |
| 1961 | 1961-01-01 | 1961-11-26 |
| 1962 | 1962-08-10 | 1962-11-17 |
| 1963 | 1963-01-18 | 1963-11-11 |
| 1964 | 1964-03-25 | 1964-12-04 |
| 1965 | 1965-03-14 | 1965-10-09 |
| 1966 | 1966-01-29 | 1966-01-30 |
| 1967 | 1967-03-11 | 1967-11-23 |
| 1968 | 1968-03-28 | 1968-10-22 |
| 1969 | 1969-02-24 | 1969-10-14 |
| 1970 | 1970-02-04 | 1970-12-06 |
| 1971 | 1971-01-09 | 1971-09-06 |
| 1972 | 1972-01-06 | 1972-04-12 |
| 1973 | 1973-02-16 | 1973-12-22 |
| 1974 | 1974-01-15 | 1974-08-22 |
| 1975 | 1975-01-30 | 1975-11-26 |
| 1976 | 1976-01-03 | 1976-10-31 |
| 1977 | 1977-02-11 | 1977-12-30 |
| 1979 | 1979-02-23 | 1979-02-23 |
| 1980 | 1980-03-05 | 1980-08-25 |
| 1981 | 1981-02-27 | 1981-12-04 |
| 1982 | 1982-02-20 | 1982-10-11 |
| 1983 | 1983-03-01 | 1983-11-02 |
| 1984 | 1984-04-29 | 1984-06-19 |
| 1985 | 1985-01-15 | 1985-12-18 |
| 1986 | 1986-03-04 | 1986-06-02 |
| 1987 | 1987-02-08 | 1987-09-18 |
| 1988 | 1988-02-09 | 1988-12-23 |
| 1989 | 1989-01-01 | 1989-11-15 |
| 1990 | 1990-03-16 | 1990-11-27 |
| 1991 | 1991-06-17 | 1991-12-18 |
| 1993 | 1993-01-27 | 1993-12-31 |
| 1994 | 1994-03-04 | 1994-07-23 |
| 1995 | 1995-01-21 | 1995-12-16 |
| 1996 | 1996-04-02 | 1996-11-07 |
| 1997 | 1997-01-06 | 1997-06-28 |
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 | 65 | 17 | 1976 | 5 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 6 | 1974 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 12 | 2 | 1965 | 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).