Grootfontein Weather Records (SF000901760)

Record envelope, standing records and threshold days for Grootfontein (SF000901760), South Africa, with 86 years of record.

Key Facts for Grootfontein

Grootfontein (SF000901760) is a weather station in South Africa at -32.43 latitude and 21.60 longitude, 805 m (2,641 ft) above sea level.
The station reports from 1912 to 1997, 86 years of record.
0 records set at Grootfontein still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grootfontein set a daily record precipitation of 16.0 mm (0.6 in) on 8 June 1997.

About the Station

Location: South Africa, -32.43 latitude, 21.60 longitude.
Elevation: 805 m (2,641 ft).
Period of record: 1912 to 1997, 86 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. 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, 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 still stand.

All-Time Record Progression

3 new records

3 all-time records were set at Grootfontein between 27 March 1961 and 20 June 1989. Each dot is a new record.

When Grootfontein set new all-time records
Date	Kind	Detail
1961-03-27	Record daily precipitation	Record daily precipitation 89.0 mm (3.5 in)
1981-01-23	Record daily precipitation	Record daily precipitation 96.0 mm (3.8 in)
1989-06-20	Record daily precipitation	Record daily precipitation 97.5 mm (3.8 in)

Wettest Day of Each Month

Jun: 97.5 mm (3.8 in)

The wettest day on record for each calendar month at Grootfontein. The most was 97.5 mm (3.8 in) on 20 June 1989.

Record daily precipitation for each month at Grootfontein
Month	Record daily precipitation (mm)	Date
Jan	96.0 mm (3.8 in)	23 January 1981
Feb	47.0 mm (1.9 in)	1 February 1939
Mar	96.0 mm (3.8 in)	25 March 1981
Apr	76.0 mm (3.0 in)	5 April 1988
May	67.0 mm (2.6 in)	26 May 1967
Jun	97.5 mm (3.8 in)	20 June 1989
Jul	47.0 mm (1.9 in)	27 July 1961
Aug	55.9 mm (2.2 in)	21 August 1939
Sep	33.5 mm (1.3 in)	22 September 1993
Oct	67.0 mm (2.6 in)	31 October 1956
Nov	35.5 mm (1.4 in)	27 November 1980
Dec	69.9 mm (2.8 in)	28 December 1921

Latest Records

Latest records at Grootfontein
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 June 1997	Grootfontein, ZA	daily rain	16.0 mm (0.6 in)	2.8 mm (0.11 in)	80 years	20 of 100 (Routine)
7 June 1997	Grootfontein, ZA	daily rain	38.0 mm (1.5 in)	17.7 mm (0.7 in)	66 years	39 of 100 (Notable)
25 May 1997	Grootfontein, ZA	daily rain	13.0 mm (0.5 in)	5.1 mm (0.20 in)	76 years	20 of 100 (Routine)
1 April 1997	Grootfontein, ZA	daily rain	6.5 mm (0.26 in)	3.5 mm (0.14 in)	48 years	20 of 100 (Routine)
28 January 1997	Grootfontein, ZA	daily rain	11.0 mm (0.4 in)	2.0 mm (0.08 in)	20 years	15 of 100 (Routine)
16 November 1996	Grootfontein, ZA	daily rain	14.0 mm (0.6 in)	1.3 mm (0.05 in)	47 years	20 of 100 (Routine)
5 November 1996	Grootfontein, ZA	daily rain	25.0 mm (1.0 in)	11.0 mm (0.4 in)	74 years	43 of 100 (Notable)
18 October 1996	Grootfontein, ZA	daily rain	9.0 mm (0.35 in)	0.1 mm (0.00 in)	78 years	20 of 100 (Routine)
28 February 1996	Grootfontein, ZA	daily rain	33.5 mm (1.3 in)	9.0 mm (0.35 in)	18 years	22 of 100 (Routine)
17 December 1995	Grootfontein, ZA	daily rain	58.0 mm (2.3 in)	21.4 mm (0.8 in)	57 years	42 of 100 (Notable)
21 November 1995	Grootfontein, ZA	daily rain	16.0 mm (0.6 in)	10.4 mm (0.4 in)	78 years	20 of 100 (Routine)
30 September 1995	Grootfontein, ZA	daily rain	7.0 mm (0.28 in)	1.7 mm (0.07 in)	44 years	20 of 100 (Routine)
5 May 1995	Grootfontein, ZA	daily rain	18.0 mm (0.7 in)	12.9 mm (0.5 in)	72 years	20 of 100 (Routine)
4 May 1995	Grootfontein, ZA	daily rain	19.0 mm (0.7 in)	5.8 mm (0.23 in)	68 years	20 of 100 (Routine)
27 February 1995	Grootfontein, ZA	daily rain	37.0 mm (1.5 in)	29.0 mm (1.1 in)	17 years	43 of 100 (Notable)
2 November 1994	Grootfontein, ZA	daily rain	8.0 mm (0.31 in)	2.0 mm (0.08 in)	17 years	15 of 100 (Routine)
20 October 1994	Grootfontein, ZA	daily rain	16.0 mm (0.6 in)	5.8 mm (0.23 in)	76 years	20 of 100 (Routine)
3 August 1994	Grootfontein, ZA	daily rain	4.0 mm (0.16 in)	4.0 mm (0.16 in)	80 years	20 of 100 (Routine)
24 July 1994	Grootfontein, ZA	daily rain	38.0 mm (1.5 in)	13.0 mm (0.5 in)	11 years	24 of 100 (Routine)
19 October 1993	Grootfontein, ZA	daily rain	6.0 mm (0.24 in)	2.0 mm (0.08 in)	2 years	9 of 100 (Routine)

Extremes by Year

1912 to 1997

Yearly extremes at Grootfontein: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	97.5 mm (3.8 in)	1989	31.8 mm (1.3 in)	80
Wettest five days (Rx5day)	193.0 mm (7.6 in)	1981	39.5 mm (1.6 in)	80
Longest dry spell (CDD)	346 days	1962	96 days	80

Wettest day (Rx1day)

The wettest day of the year at Grootfontein, 1912 to 1997. The record is 97.5 mm (3.8 in) in 1989, marked on the chart; the median year is 31.8 mm (1.3 in).

Wettest day (Rx1day) at Grootfontein by year
Year	Wettest day (Rx1day)
1912	20.6 mm (0.8 in)
1913	38.1 mm (1.5 in)
1914	22.9 mm (0.9 in)
1915	31.8 mm (1.3 in)
1916	20.1 mm (0.8 in)
1917	29.2 mm (1.1 in)
1918	56.4 mm (2.2 in)
1919	31.8 mm (1.3 in)
1920	20.3 mm (0.8 in)
1921	69.9 mm (2.8 in)
1922	28.2 mm (1.1 in)
1923	18.3 mm (0.7 in)
1924	29.2 mm (1.1 in)
1925	24.9 mm (1.0 in)
1926	13.2 mm (0.5 in)
1927	16.0 mm (0.6 in)
1930	20.6 mm (0.8 in)
1931	42.9 mm (1.7 in)
1932	15.2 mm (0.6 in)
1933	29.5 mm (1.2 in)
1934	22.9 mm (0.9 in)
1935	59.7 mm (2.4 in)
1936	6.9 mm (0.27 in)
1937	36.6 mm (1.4 in)
1938	36.8 mm (1.4 in)
1939	55.9 mm (2.2 in)
1944	14.0 mm (0.6 in)
1945	27.9 mm (1.1 in)
1946	22.9 mm (0.9 in)
1947	21.6 mm (0.9 in)
1948	43.9 mm (1.7 in)
1949	18.3 mm (0.7 in)
1950	46.2 mm (1.8 in)
1951	22.6 mm (0.9 in)
1952	23.9 mm (0.9 in)
1953	17.0 mm (0.7 in)
1954	24.5 mm (1.0 in)
1955	34.0 mm (1.3 in)
1956	67.0 mm (2.6 in)
1957	30.5 mm (1.2 in)
1958	23.0 mm (0.9 in)
1959	42.0 mm (1.7 in)
1960	17.2 mm (0.7 in)
1961	89.0 mm (3.5 in)
1962	35.5 mm (1.4 in)
1963	13.0 mm (0.5 in)
1964	26.0 mm (1.0 in)
1965	27.5 mm (1.1 in)
1966	27.5 mm (1.1 in)
1967	67.0 mm (2.6 in)
1968	10.0 mm (0.4 in)
1969	16.0 mm (0.6 in)
1970	23.5 mm (0.9 in)
1971	47.0 mm (1.9 in)
1972	27.0 mm (1.1 in)
1973	25.0 mm (1.0 in)
1974	65.0 mm (2.6 in)
1975	47.8 mm (1.9 in)
1976	45.0 mm (1.8 in)
1977	24.5 mm (1.0 in)
1978	34.0 mm (1.3 in)
1979	39.5 mm (1.6 in)
1980	35.5 mm (1.4 in)
1981	96.0 mm (3.8 in)
1982	44.0 mm (1.7 in)
1983	25.0 mm (1.0 in)
1984	51.5 mm (2.0 in)
1985	55.5 mm (2.2 in)
1986	44.0 mm (1.7 in)
1987	38.0 mm (1.5 in)
1988	76.0 mm (3.0 in)
1989	97.5 mm (3.8 in)
1990	35.0 mm (1.4 in)
1991	39.5 mm (1.6 in)
1992	35.0 mm (1.4 in)
1993	33.5 mm (1.3 in)
1994	38.0 mm (1.5 in)
1995	58.0 mm (2.3 in)
1996	33.5 mm (1.3 in)
1997	38.0 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grootfontein, 1912 to 1997. The record is 193.0 mm (7.6 in) in 1981, marked on the chart; the median year is 39.5 mm (1.6 in).

Wettest five days (Rx5day) at Grootfontein by year
Year	Wettest five days (Rx5day)
1912	25.1 mm (1.0 in)
1913	45.7 mm (1.8 in)
1914	22.9 mm (0.9 in)
1915	31.8 mm (1.3 in)
1916	27.7 mm (1.1 in)
1917	31.0 mm (1.2 in)
1918	84.8 mm (3.3 in)
1919	49.7 mm (2.0 in)
1920	25.4 mm (1.0 in)
1921	85.7 mm (3.4 in)
1922	76.3 mm (3.0 in)
1923	18.3 mm (0.7 in)
1924	29.2 mm (1.1 in)
1925	50.7 mm (2.0 in)
1926	13.7 mm (0.5 in)
1927	16.0 mm (0.6 in)
1930	40.6 mm (1.6 in)
1931	46.7 mm (1.8 in)
1932	25.4 mm (1.0 in)
1933	48.6 mm (1.9 in)
1934	25.4 mm (1.0 in)
1935	71.1 mm (2.8 in)
1936	8.2 mm (0.32 in)
1937	74.9 mm (2.9 in)
1938	44.4 mm (1.7 in)
1939	101.1 mm (4.0 in)
1944	18.6 mm (0.7 in)
1945	27.9 mm (1.1 in)
1946	26.2 mm (1.0 in)
1947	21.6 mm (0.9 in)
1948	58.4 mm (2.3 in)
1949	31.0 mm (1.2 in)
1950	52.8 mm (2.1 in)
1951	22.6 mm (0.9 in)
1952	35.0 mm (1.4 in)
1953	20.6 mm (0.8 in)
1954	28.5 mm (1.1 in)
1955	39.0 mm (1.5 in)
1956	73.0 mm (2.9 in)
1957	30.5 mm (1.2 in)
1958	43.2 mm (1.7 in)
1959	42.0 mm (1.7 in)
1960	17.2 mm (0.7 in)
1961	89.0 mm (3.5 in)
1962	35.5 mm (1.4 in)
1963	13.0 mm (0.5 in)
1964	36.0 mm (1.4 in)
1965	38.5 mm (1.5 in)
1966	31.0 mm (1.2 in)
1967	67.0 mm (2.6 in)
1968	20.5 mm (0.8 in)
1969	30.8 mm (1.2 in)
1970	48.0 mm (1.9 in)
1971	90.0 mm (3.5 in)
1972	39.0 mm (1.5 in)
1973	35.0 mm (1.4 in)
1974	108.0 mm (4.3 in)
1975	50.8 mm (2.0 in)
1976	73.5 mm (2.9 in)
1977	32.5 mm (1.3 in)
1978	35.2 mm (1.4 in)
1979	70.5 mm (2.8 in)
1980	72.5 mm (2.9 in)
1981	193.0 mm (7.6 in)
1982	60.0 mm (2.4 in)
1983	42.0 mm (1.7 in)
1984	83.5 mm (3.3 in)
1985	104.5 mm (4.1 in)
1986	44.0 mm (1.7 in)
1987	38.0 mm (1.5 in)
1988	88.0 mm (3.5 in)
1989	97.5 mm (3.8 in)
1990	84.5 mm (3.3 in)
1991	39.5 mm (1.6 in)
1992	35.0 mm (1.4 in)
1993	39.5 mm (1.6 in)
1994	38.0 mm (1.5 in)
1995	64.0 mm (2.5 in)
1996	48.0 mm (1.9 in)
1997	54.0 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grootfontein, 1912 to 1997. The record is 346 days in 1962, marked on the chart; the median year is 96 days.

Longest dry spell (CDD) at Grootfontein by year
Year	Longest dry spell (CDD)
1912	22 days
1913	50 days
1914	53 days
1915	98 days
1916	166 days
1917	50 days
1918	59 days
1919	86 days
1920	62 days
1921	40 days
1922	50 days
1923	88 days
1924	95 days
1925	53 days
1926	97 days
1927	49 days
1930	81 days
1931	116 days
1932	106 days
1933	142 days
1934	79 days
1935	83 days
1936	45 days
1937	240 days
1938	101 days
1939	170 days
1944	111 days
1945	177 days
1946	83 days
1947	189 days
1948	96 days
1949	174 days
1950	98 days
1951	226 days
1952	143 days
1953	97 days
1954	69 days
1955	123 days
1956	98 days
1957	110 days
1958	162 days
1959	161 days
1960	240 days
1961	157 days
1962	346 days
1963	255 days
1964	135 days
1965	56 days
1966	135 days
1967	127 days
1968	107 days
1969	86 days
1970	74 days
1971	88 days
1972	229 days
1973	70 days
1974	71 days
1975	44 days
1976	83 days
1977	86 days
1978	70 days
1979	82 days
1980	165 days
1981	84 days
1982	70 days
1983	75 days
1984	112 days
1985	106 days
1986	87 days
1987	109 days
1988	149 days
1989	54 days
1990	66 days
1991	99 days
1992	66 days
1993	63 days
1994	95 days
1995	85 days
1996	193 days
1997	138 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

73 years, 1914 to 1997

A day with at least 31.1 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 109.0 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Grootfontein: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	31.1 mm (1.2 in)
5 years	46.8 mm (1.8 in)
10 years	59.0 mm (2.3 in)
25 years	76.9 mm (3.0 in)
50 years	92.0 mm (3.6 in)
100 years	109.0 mm (4.3 in)	Longer than the 73 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, 73 years of values from 1914 to 1997.

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: 97.5 mm (3.8 in) in 1989; 96.0 mm (3.8 in) in 1981; 89.0 mm (3.5 in) in 1961.

Download the Data

Data for Grootfontein standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grootfontein 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