Grootfontein 11, Threshold Days by Year (SF001450290)

3 fixed thresholds counted per year at Grootfontein 11, (SF001450290): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grootfontein 11, Thresholds

Grootfontein 11,: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1974 with 23.
Grootfontein 11,: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1974 with 9.
Grootfontein 11,: days with 50 mm (1.97 in) or more of precipitation in 15 years, most in 1941 with 3.
3 fixed thresholds have at least one qualifying day at Grootfontein 11,.

Days with 10 mm (0.39 in) or more of precipitation

74 years with a qualifying day

Days per year at Grootfontein 11, with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Grootfontein 11,
Year	Days	Decade average
1916	15	12.3
1917	17	12.3
1918	12	12.3
1919	5	12.3
1920	10	9.9
1921	12	9.9
1922	5	9.9
1923	6	9.9
1924	10	9.9
1925	20	9.9
1926	6	9.9
1927	5	9.9
1928	10	9.9
1929	15	9.9
1930	5	11.8
1931	14	11.8
1932	8	11.8
1933	13	11.8
1934	18	11.8
1935	11	11.8
1936	16	11.8
1937	7	11.8
1938	7	11.8
1939	19	11.8
1940	14	12.2
1941	15	12.2
1942	14	12.2
1943	21	12.2
1944	8	12.2
1945	8	12.2
1946	9	12.2
1947	13	12.2
1948	15	12.2
1949	5	12.2
1950	20	12.1
1951	7	12.1
1952	16	12.1
1953	15	12.1
1954	4	12.1
1955	13	12.1
1956	13	12.1
1957	11	12.1
1958	14	12.1
1959	8	12.1
1960	11	10.2
1961	17	10.2
1962	7	10.2
1963	14	10.2
1964	11	10.2
1965	10	10.2
1966	5	10.2
1967	13	10.2
1968	7	10.2
1969	7	10.2
1970	6	12.4
1971	9	12.4
1972	12	12.4
1973	10	12.4
1974	23	12.4
1975	14	12.4
1976	19	12.4
1977	13	12.4
1978	5	12.4
1979	13	12.4
1980	5	13.6
1981	23	13.6
1982	9	13.6
1983	15	13.6
1984	7	13.6
1985	17	13.6
1986	17	13.6
1987	12	13.6
1988	17	13.6
1990	6	6

For each year, a bar from the first to the last day at Grootfontein 11, meeting 10 mm (0.39 in).

First to last qualifying date each year at Grootfontein 11,
Year	First date	Last date
1916	1916-01-04	1916-12-03
1917	1917-01-07	1917-12-18
1918	1918-01-02	1918-10-29
1919	1919-03-12	1919-04-08
1920	1920-01-30	1920-09-06
1921	1921-02-18	1921-12-28
1922	1922-01-10	1922-11-21
1923	1923-01-13	1923-12-18
1924	1924-01-24	1924-12-27
1925	1925-01-31	1925-12-05
1926	1926-03-05	1926-12-27
1927	1927-01-25	1927-10-20
1928	1928-01-04	1928-12-08
1929	1929-01-18	1929-12-16
1930	1930-01-14	1930-11-12
1931	1931-01-09	1931-12-31
1932	1932-02-27	1932-12-25
1933	1933-01-02	1933-12-26
1934	1934-01-02	1934-12-12
1935	1935-01-18	1935-12-23
1936	1936-02-16	1936-12-28
1937	1937-01-22	1937-12-16
1938	1938-02-18	1938-11-08
1939	1939-01-11	1939-10-23
1940	1940-01-29	1940-11-09
1941	1941-01-16	1941-10-28
1942	1942-01-24	1942-12-03
1943	1943-01-06	1943-12-26
1944	1944-01-04	1944-10-27
1945	1945-01-06	1945-04-09
1946	1946-01-18	1946-12-29
1947	1947-01-13	1947-12-04
1948	1948-01-30	1948-12-14
1949	1949-02-24	1949-12-10
1950	1950-02-08	1950-12-27
1951	1951-01-05	1951-09-30
1952	1952-01-30	1952-12-15
1953	1953-02-02	1953-12-19
1954	1954-01-30	1954-04-30
1955	1955-01-26	1955-12-17
1956	1956-02-05	1956-12-07
1957	1957-01-14	1957-12-28
1958	1958-01-13	1958-12-14
1959	1959-01-24	1959-10-20
1960	1960-01-18	1960-12-28
1961	1961-01-14	1961-12-16
1962	1962-02-01	1962-11-19
1963	1963-01-07	1963-11-17
1964	1964-01-10	1964-12-27
1965	1965-04-05	1965-11-16
1966	1966-01-19	1966-12-19
1967	1967-01-18	1967-07-12
1968	1968-03-05	1968-12-07
1969	1969-01-06	1969-10-18
1970	1970-02-04	1970-12-05
1971	1971-01-08	1971-12-01
1972	1972-01-06	1972-11-22
1973	1973-02-17	1973-12-22
1974	1974-01-08	1974-12-16
1975	1975-01-22	1975-12-22
1976	1976-01-05	1976-10-30
1977	1977-01-28	1977-12-30
1978	1978-01-10	1978-12-09
1979	1979-01-09	1979-11-20
1980	1980-03-12	1980-12-27
1981	1981-01-25	1981-12-05
1982	1982-02-21	1982-11-15
1983	1983-02-01	1983-12-29
1984	1984-04-07	1984-11-28
1985	1985-01-14	1985-12-19
1986	1986-01-18	1986-11-26
1987	1987-02-09	1987-11-29
1988	1988-02-16	1988-12-24
1990	1990-01-16	1990-12-05

Every Fixed Threshold

Fixed thresholds at Grootfontein 11,
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	74	23	1974	6
25 mm (0.98 in): Days with 25 mm or more rain	69	9	1974	1
50 mm (1.97 in): Days with 50 mm or more rain	15	3	1941	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

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Data for Grootfontein 11, threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Grootfontein 11, Threshold Days by Year (SF001450290)

Key Facts for Grootfontein 11, Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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