Grootfontein 11, Weather Records (SF001450290)

Record envelope, standing records and threshold days for Grootfontein 11, (SF001450290), South Africa, with 76 years of record.

Key Facts for Grootfontein 11,

Grootfontein 11, (SF001450290) is a weather station in South Africa at -31.48 latitude and 25.02 longitude, 1,250 m (4,101 ft) above sea level.
The station reports from 1916 to 1991, 76 years of record.
0 records set at Grootfontein 11, still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grootfontein 11, set a daily record precipitation of 22.8 mm (0.9 in) on 7 June 1991.

About the Station

Location: South Africa, -31.48 latitude, 25.02 longitude.
Elevation: 1,250 m (4,101 ft).
Period of record: 1916 to 1991, 76 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Grootfontein 11,. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Grootfontein 11,, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Grootfontein 11, still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Grootfontein 11, between 3 March 1974 and 3 March 1974. Each dot is a new record.

Wettest Day of Each Month

Mar: 93.4 mm (3.7 in)

The wettest day on record for each calendar month at Grootfontein 11,. The most was 93.4 mm (3.7 in) on 3 March 1974.

Record daily precipitation for each month at Grootfontein 11,
Month	Record daily precipitation (mm)	Date
Jan	71.0 mm (2.8 in)	26 January 1955
Feb	71.1 mm (2.8 in)	4 February 1941
Mar	93.4 mm (3.7 in)	3 March 1974
Apr	53.6 mm (2.1 in)	5 April 1941
May	39.9 mm (1.6 in)	17 May 1950
Jun	32.9 mm (1.3 in)	12 June 1987
Jul	38.9 mm (1.5 in)	13 July 1931
Aug	69.1 mm (2.7 in)	26 August 1970
Sep	44.0 mm (1.7 in)	17 September 1958
Oct	39.1 mm (1.5 in)	11 October 1942
Nov	49.7 mm (2.0 in)	30 November 1977
Dec	54.9 mm (2.2 in)	9 December 1934

Latest Records

Latest records at Grootfontein 11,
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 June 1991	Grootfontein 11,, ZA	daily rain	22.8 mm (0.9 in)	2.2 mm (0.09 in)	73 years	20 of 100 (Routine)
17 March 1991	Grootfontein 11,, ZA	daily rain	18.8 mm (0.7 in)	1.1 mm (0.04 in)	32 years	17 of 100 (Routine)
16 February 1991	Grootfontein 11,, ZA	daily rain	44.0 mm (1.7 in)	26.2 mm (1.0 in)	55 years	51 of 100 (Notable)
6 February 1991	Grootfontein 11,, ZA	daily rain	54.5 mm (2.1 in)	22.0 mm (0.9 in)	71 years	52 of 100 (Notable)
20 June 1990	Grootfontein 11,, ZA	daily rain	12.3 mm (0.5 in)	9.5 mm (0.37 in)	67 years	20 of 100 (Routine)
22 June 1989	Grootfontein 11,, ZA	daily rain	5.6 mm (0.22 in)	4.3 mm (0.17 in)	71 years	20 of 100 (Routine)
30 May 1989	Grootfontein 11,, ZA	daily rain	16.5 mm (0.6 in)	1.0 mm (0.04 in)	64 years	20 of 100 (Routine)
14 April 1989	Grootfontein 11,, ZA	daily rain	33.2 mm (1.3 in)	6.2 mm (0.24 in)	7 years	17 of 100 (Routine)
21 March 1989	Grootfontein 11,, ZA	daily rain	20.2 mm (0.8 in)	1.7 mm (0.07 in)	52 years	20 of 100 (Routine)
11 February 1989	Grootfontein 11,, ZA	daily rain	50.5 mm (2.0 in)	19.7 mm (0.8 in)	14 years	32 of 100 (Routine)
27 January 1989	Grootfontein 11,, ZA	daily rain	12.3 mm (0.5 in)	2.1 mm (0.08 in)	47 years	20 of 100 (Routine)
5 January 1989	Grootfontein 11,, ZA	daily rain	50.6 mm (2.0 in)	23.4 mm (0.9 in)	38 years	41 of 100 (Notable)
1 January 1989	Grootfontein 11,, ZA	daily rain	10.5 mm (0.4 in)	4.7 mm (0.19 in)	38 years	20 of 100 (Routine)
24 December 1988	Grootfontein 11,, ZA	daily rain	10.0 mm (0.4 in)	1.6 mm (0.06 in)	67 years	20 of 100 (Routine)
18 December 1988	Grootfontein 11,, ZA	daily rain	28.6 mm (1.1 in)	13.1 mm (0.5 in)	71 years	43 of 100 (Notable)
13 September 1988	Grootfontein 11,, ZA	daily rain	28.0 mm (1.1 in)	8.0 mm (0.31 in)	35 years	27 of 100 (Routine)
3 July 1988	Grootfontein 11,, ZA	daily rain	8.0 mm (0.31 in)	1.4 mm (0.06 in)	57 years	20 of 100 (Routine)
27 June 1988	Grootfontein 11,, ZA	daily rain	10.9 mm (0.4 in)	6.4 mm (0.25 in)	33 years	20 of 100 (Routine)
12 November 1987	Grootfontein 11,, ZA	daily rain	46.6 mm (1.8 in)	26.7 mm (1.1 in)	25 years	45 of 100 (Notable)
27 September 1987	Grootfontein 11,, ZA	daily rain	11.8 mm (0.5 in)	5.1 mm (0.20 in)	6 years	16 of 100 (Routine)

Extremes by Year

1916 to 1991

Yearly extremes at Grootfontein 11,: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	93.4 mm (3.7 in)	1974	38.4 mm (1.5 in)	76
Wettest five days (Rx5day)	248.1 mm (9.8 in)	1974	61.1 mm (2.4 in)	76
Longest dry spell (CDD)	138 days	1949	53 days	76

Wettest day (Rx1day)

The wettest day of the year at Grootfontein 11,, 1916 to 1991. The record is 93.4 mm (3.7 in) in 1974, marked on the chart; the median year is 38.4 mm (1.5 in).

Wettest day (Rx1day) at Grootfontein 11, by year
Year	Wettest day (Rx1day)
1916	27.2 mm (1.1 in)
1917	46.5 mm (1.8 in)
1918	91.9 mm (3.6 in)
1919	30.7 mm (1.2 in)
1920	52.1 mm (2.1 in)
1921	45.2 mm (1.8 in)
1922	30.7 mm (1.2 in)
1923	27.9 mm (1.1 in)
1924	26.9 mm (1.1 in)
1925	46.2 mm (1.8 in)
1926	27.9 mm (1.1 in)
1927	25.9 mm (1.0 in)
1928	30.5 mm (1.2 in)
1929	38.6 mm (1.5 in)
1930	54.1 mm (2.1 in)
1931	46.0 mm (1.8 in)
1932	33.8 mm (1.3 in)
1933	38.6 mm (1.5 in)
1934	54.9 mm (2.2 in)
1935	36.3 mm (1.4 in)
1936	31.5 mm (1.2 in)
1937	27.4 mm (1.1 in)
1938	26.7 mm (1.1 in)
1939	53.3 mm (2.1 in)
1940	53.3 mm (2.1 in)
1941	71.1 mm (2.8 in)
1942	39.1 mm (1.5 in)
1943	51.1 mm (2.0 in)
1944	62.2 mm (2.4 in)
1945	38.1 mm (1.5 in)
1946	31.2 mm (1.2 in)
1947	39.1 mm (1.5 in)
1948	55.4 mm (2.2 in)
1949	44.4 mm (1.7 in)
1950	50.8 mm (2.0 in)
1951	34.8 mm (1.4 in)
1952	37.1 mm (1.5 in)
1953	49.3 mm (1.9 in)
1954	29.0 mm (1.1 in)
1955	71.0 mm (2.8 in)
1956	48.5 mm (1.9 in)
1957	20.9 mm (0.8 in)
1958	44.0 mm (1.7 in)
1959	29.5 mm (1.2 in)
1960	33.6 mm (1.3 in)
1961	31.0 mm (1.2 in)
1962	17.3 mm (0.7 in)
1963	50.8 mm (2.0 in)
1964	47.5 mm (1.9 in)
1965	34.4 mm (1.4 in)
1966	20.5 mm (0.8 in)
1967	43.6 mm (1.7 in)
1968	23.2 mm (0.9 in)
1969	26.6 mm (1.0 in)
1970	69.1 mm (2.7 in)
1971	30.2 mm (1.2 in)
1972	31.4 mm (1.2 in)
1973	30.3 mm (1.2 in)
1974	93.4 mm (3.7 in)
1975	41.4 mm (1.6 in)
1976	37.1 mm (1.5 in)
1977	49.7 mm (2.0 in)
1978	41.0 mm (1.6 in)
1979	35.0 mm (1.4 in)
1980	20.5 mm (0.8 in)
1981	40.5 mm (1.6 in)
1982	41.6 mm (1.6 in)
1983	33.9 mm (1.3 in)
1984	43.7 mm (1.7 in)
1985	37.6 mm (1.5 in)
1986	38.0 mm (1.5 in)
1987	46.6 mm (1.8 in)
1988	32.8 mm (1.3 in)
1989	50.6 mm (2.0 in)
1990	34.5 mm (1.4 in)
1991	54.5 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grootfontein 11,, 1916 to 1991. The record is 248.1 mm (9.8 in) in 1974, marked on the chart; the median year is 61.1 mm (2.4 in).

Wettest five days (Rx5day) at Grootfontein 11, by year
Year	Wettest five days (Rx5day)
1916	28.9 mm (1.1 in)
1917	89.6 mm (3.5 in)
1918	124.9 mm (4.9 in)
1919	45.0 mm (1.8 in)
1920	83.3 mm (3.3 in)
1921	73.4 mm (2.9 in)
1922	32.3 mm (1.3 in)
1923	34.8 mm (1.4 in)
1924	42.1 mm (1.7 in)
1925	54.6 mm (2.1 in)
1926	34.8 mm (1.4 in)
1927	51.8 mm (2.0 in)
1928	46.8 mm (1.8 in)
1929	60.7 mm (2.4 in)
1930	58.4 mm (2.3 in)
1931	73.6 mm (2.9 in)
1932	73.6 mm (2.9 in)
1933	58.1 mm (2.3 in)
1934	78.9 mm (3.1 in)
1935	57.4 mm (2.3 in)
1936	43.6 mm (1.7 in)
1937	45.9 mm (1.8 in)
1938	67.6 mm (2.7 in)
1939	128.2 mm (5.0 in)
1940	87.8 mm (3.5 in)
1941	101.8 mm (4.0 in)
1942	54.6 mm (2.1 in)
1943	69.0 mm (2.7 in)
1944	91.4 mm (3.6 in)
1945	60.2 mm (2.4 in)
1946	43.6 mm (1.7 in)
1947	52.1 mm (2.1 in)
1948	77.0 mm (3.0 in)
1949	44.9 mm (1.8 in)
1950	73.2 mm (2.9 in)
1951	56.1 mm (2.2 in)
1952	76.9 mm (3.0 in)
1953	73.7 mm (2.9 in)
1954	52.4 mm (2.1 in)
1955	80.0 mm (3.1 in)
1956	65.2 mm (2.6 in)
1957	30.4 mm (1.2 in)
1958	63.0 mm (2.5 in)
1959	82.5 mm (3.2 in)
1960	61.5 mm (2.4 in)
1961	55.2 mm (2.2 in)
1962	43.0 mm (1.7 in)
1963	82.7 mm (3.3 in)
1964	58.5 mm (2.3 in)
1965	60.6 mm (2.4 in)
1966	24.1 mm (0.9 in)
1967	68.5 mm (2.7 in)
1968	32.2 mm (1.3 in)
1969	51.0 mm (2.0 in)
1970	87.5 mm (3.4 in)
1971	57.1 mm (2.2 in)
1972	63.3 mm (2.5 in)
1973	72.6 mm (2.9 in)
1974	248.1 mm (9.8 in)
1975	62.0 mm (2.4 in)
1976	64.4 mm (2.5 in)
1977	57.7 mm (2.3 in)
1978	59.6 mm (2.3 in)
1979	51.2 mm (2.0 in)
1980	29.5 mm (1.2 in)
1981	87.5 mm (3.4 in)
1982	42.0 mm (1.7 in)
1983	59.8 mm (2.4 in)
1984	63.4 mm (2.5 in)
1985	76.1 mm (3.0 in)
1986	62.1 mm (2.4 in)
1987	62.9 mm (2.5 in)
1988	81.8 mm (3.2 in)
1989	92.2 mm (3.6 in)
1990	39.5 mm (1.6 in)
1991	90.5 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grootfontein 11,, 1916 to 1991. The record is 138 days in 1949, marked on the chart; the median year is 53 days.

Longest dry spell (CDD) at Grootfontein 11, by year
Year	Longest dry spell (CDD)
1916	65 days
1917	44 days
1918	40 days
1919	91 days
1920	43 days
1921	63 days
1922	37 days
1923	122 days
1924	56 days
1925	40 days
1926	64 days
1927	69 days
1928	116 days
1929	36 days
1930	65 days
1931	47 days
1932	62 days
1933	90 days
1934	71 days
1935	41 days
1936	41 days
1937	50 days
1938	53 days
1939	35 days
1940	87 days
1941	60 days
1942	31 days
1943	26 days
1944	46 days
1945	68 days
1946	42 days
1947	61 days
1948	64 days
1949	138 days
1950	45 days
1951	65 days
1952	40 days
1953	30 days
1954	106 days
1955	53 days
1956	59 days
1957	37 days
1958	104 days
1959	54 days
1960	34 days
1961	49 days
1962	53 days
1963	56 days
1964	60 days
1965	48 days
1966	85 days
1967	50 days
1968	53 days
1969	54 days
1970	43 days
1971	26 days
1972	70 days
1973	63 days
1974	46 days
1975	66 days
1976	39 days
1977	51 days
1978	52 days
1979	37 days
1980	119 days
1981	43 days
1982	38 days
1983	47 days
1984	56 days
1985	104 days
1986	68 days
1987	49 days
1988	60 days
1989	32 days
1990	63 days
1991	68 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

74 years, 1916 to 1990

A day with at least 37.8 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 89.7 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Grootfontein 11,: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	37.8 mm (1.5 in)
5 years	50.3 mm (2.0 in)
10 years	59.1 mm (2.3 in)
25 years	70.9 mm (2.8 in)
50 years	80.1 mm (3.2 in)
100 years	89.7 mm (3.5 in)	Longer than the 74 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 74 years of values from 1916 to 1990.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 93.4 mm (3.7 in) in 1974; 91.9 mm (3.6 in) in 1918; 71.1 mm (2.8 in) in 1941.

Download the Data

Data for Grootfontein 11, standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a