Groothoek Weather Records (SF000960940)

Record envelope, standing records and threshold days for Groothoek (SF000960940), South Africa, with 68 years of record.

Key Facts for Groothoek

Groothoek (SF000960940) is a weather station in South Africa at -32.07 latitude and 24.57 longitude, 1,137 m (3,730 ft) above sea level.
The station reports from 1920 to 1987, 68 years of record.
0 records set at Groothoek still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Groothoek set a daily record precipitation of 35.0 mm (1.4 in) on 25 November 1986.

About the Station

Location: South Africa, -32.07 latitude, 24.57 longitude.
Elevation: 1,137 m (3,730 ft).
Period of record: 1920 to 1987, 68 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 Groothoek. 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 Groothoek, 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 Groothoek still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Groothoek between 26 March 1961 and 7 May 1977. Each dot is a new record.

When Groothoek set new all-time records
Date	Kind	Detail
1961-03-26	Record daily precipitation	Record daily precipitation 94.0 mm (3.7 in)
1977-05-07	Record daily precipitation	Record daily precipitation 100.3 mm (3.9 in)

Wettest Day of Each Month

May: 100.3 mm (3.9 in)

The wettest day on record for each calendar month at Groothoek. The most was 100.3 mm (3.9 in) on 7 May 1977.

Record daily precipitation for each month at Groothoek
Month	Record daily precipitation (mm)	Date
Jan	83.8 mm (3.3 in)	26 January 1937
Feb	50.8 mm (2.0 in)	10 February 1923
Mar	94.0 mm (3.7 in)	26 March 1961
Apr	61.7 mm (2.4 in)	19 April 1948
May	100.3 mm (3.9 in)	7 May 1977
Jun	31.5 mm (1.2 in)	17 June 1926
Jul	46.5 mm (1.8 in)	17 July 1959
Aug	69.0 mm (2.7 in)	26 August 1970
Sep	51.6 mm (2.0 in)	6 September 1929
Oct	72.2 mm (2.8 in)	21 October 1953
Nov	47.2 mm (1.9 in)	27 November 1926
Dec	85.3 mm (3.4 in)	22 December 1975

Latest Records

Latest records at Groothoek
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 November 1986	Groothoek, ZA	daily rain	35.0 mm (1.4 in)	6.8 mm (0.27 in)	40 years	24 of 100 (Routine)
6 November 1986	Groothoek, ZA	daily rain	18.0 mm (0.7 in)	2.8 mm (0.11 in)	33 years	18 of 100 (Routine)
5 October 1986	Groothoek, ZA	daily rain	11.5 mm (0.5 in)	5.5 mm (0.22 in)	9 years	13 of 100 (Routine)
3 October 1986	Groothoek, ZA	daily rain	31.0 mm (1.2 in)	15.0 mm (0.6 in)	9 years	21 of 100 (Routine)
8 March 1986	Groothoek, ZA	daily rain	26.0 mm (1.0 in)	4.9 mm (0.19 in)	48 years	23 of 100 (Routine)
23 January 1986	Groothoek, ZA	daily rain	20.0 mm (0.8 in)	13.9 mm (0.5 in)	23 years	20 of 100 (Routine)
1 December 1985	Groothoek, ZA	daily rain	67.5 mm (2.7 in)	52.5 mm (2.1 in)	4 years	47 of 100 (Notable)
1 November 1985	Groothoek, ZA	daily rain	22.0 mm (0.9 in)	7.8 mm (0.31 in)	42 years	20 of 100 (Routine)
29 October 1985	Groothoek, ZA	daily rain	13.0 mm (0.5 in)	6.0 mm (0.24 in)	16 years	15 of 100 (Routine)
13 October 1985	Groothoek, ZA	daily rain	12.5 mm (0.5 in)	12.5 mm (0.5 in)	64 years	20 of 100 (Routine)
22 June 1985	Groothoek, ZA	daily rain	19.0 mm (0.7 in)	8.0 mm (0.31 in)	22 years	20 of 100 (Routine)
15 January 1985	Groothoek, ZA	daily rain	38.5 mm (1.5 in)	14.5 mm (0.6 in)	11 years	20 of 100 (Routine)
26 November 1984	Groothoek, ZA	daily rain	30.0 mm (1.2 in)	3.5 mm (0.14 in)	9 years	11 of 100 (Routine)
29 August 1984	Groothoek, ZA	daily rain	24.0 mm (0.9 in)	19.0 mm (0.7 in)	3 years	20 of 100 (Routine)
9 November 1983	Groothoek, ZA	daily rain	31.5 mm (1.2 in)	0.5 mm (0.02 in)	42 years	18 of 100 (Routine)
9 October 1983	Groothoek, ZA	daily rain	20.0 mm (0.8 in)	10.0 mm (0.4 in)	4 years	15 of 100 (Routine)
1 October 1983	Groothoek, ZA	daily rain	14.0 mm (0.6 in)	3.6 mm (0.14 in)	52 years	20 of 100 (Routine)
20 September 1983	Groothoek, ZA	daily rain	19.5 mm (0.8 in)	0.2 mm (0.01 in)	57 years	20 of 100 (Routine)
27 July 1983	Groothoek, ZA	daily rain	10.0 mm (0.4 in)	0.6 mm (0.02 in)	49 years	20 of 100 (Routine)
26 July 1983	Groothoek, ZA	daily rain	28.0 mm (1.1 in)	15.0 mm (0.6 in)	9 years	23 of 100 (Routine)

Extremes by Year

1920 to 1987

Yearly extremes at Groothoek: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	100.3 mm (3.9 in)	1977	44.1 mm (1.7 in)	68
Wettest five days (Rx5day)	164.6 mm (6.5 in)	1928	63.0 mm (2.5 in)	68
Longest dry spell (CDD)	151 days	1986	63 days	68

Wettest day (Rx1day)

The wettest day of the year at Groothoek, 1920 to 1987. The record is 100.3 mm (3.9 in) in 1977, marked on the chart; the median year is 44.1 mm (1.7 in).

Wettest day (Rx1day) at Groothoek by year
Year	Wettest day (Rx1day)
1920	50.0 mm (2.0 in)
1921	38.1 mm (1.5 in)
1922	43.2 mm (1.7 in)
1923	50.8 mm (2.0 in)
1924	58.7 mm (2.3 in)
1925	32.3 mm (1.3 in)
1926	55.4 mm (2.2 in)
1927	41.9 mm (1.6 in)
1928	93.2 mm (3.7 in)
1929	51.6 mm (2.0 in)
1930	29.5 mm (1.2 in)
1931	50.3 mm (2.0 in)
1932	51.6 mm (2.0 in)
1933	57.2 mm (2.3 in)
1934	31.5 mm (1.2 in)
1935	28.4 mm (1.1 in)
1936	35.6 mm (1.4 in)
1937	83.8 mm (3.3 in)
1938	29.7 mm (1.2 in)
1939	48.3 mm (1.9 in)
1940	61.2 mm (2.4 in)
1941	41.7 mm (1.6 in)
1942	38.1 mm (1.5 in)
1943	30.7 mm (1.2 in)
1944	49.0 mm (1.9 in)
1945	42.2 mm (1.7 in)
1946	33.0 mm (1.3 in)
1947	43.4 mm (1.7 in)
1948	61.7 mm (2.4 in)
1949	65.5 mm (2.6 in)
1950	71.1 mm (2.8 in)
1951	55.9 mm (2.2 in)
1952	46.2 mm (1.8 in)
1953	72.2 mm (2.8 in)
1954	30.0 mm (1.2 in)
1955	35.0 mm (1.4 in)
1956	34.0 mm (1.3 in)
1957	44.1 mm (1.7 in)
1958	35.5 mm (1.4 in)
1959	46.5 mm (1.8 in)
1960	47.0 mm (1.9 in)
1961	94.0 mm (3.7 in)
1962	52.3 mm (2.1 in)
1963	51.0 mm (2.0 in)
1964	33.0 mm (1.3 in)
1965	41.0 mm (1.6 in)
1966	21.0 mm (0.8 in)
1967	38.0 mm (1.5 in)
1968	53.5 mm (2.1 in)
1969	40.0 mm (1.6 in)
1970	69.0 mm (2.7 in)
1971	60.1 mm (2.4 in)
1972	15.0 mm (0.6 in)
1973	30.0 mm (1.2 in)
1974	71.0 mm (2.8 in)
1975	85.3 mm (3.4 in)
1976	44.1 mm (1.7 in)
1977	100.3 mm (3.9 in)
1978	40.5 mm (1.6 in)
1979	23.5 mm (0.9 in)
1980	32.0 mm (1.3 in)
1981	62.5 mm (2.5 in)
1982	38.0 mm (1.5 in)
1983	44.5 mm (1.8 in)
1984	30.0 mm (1.2 in)
1985	67.5 mm (2.7 in)
1986	35.0 mm (1.4 in)
1987	20.0 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Groothoek, 1920 to 1987. The record is 164.6 mm (6.5 in) in 1928, marked on the chart; the median year is 63.0 mm (2.5 in).

Wettest five days (Rx5day) at Groothoek by year
Year	Wettest five days (Rx5day)
1920	51.5 mm (2.0 in)
1921	88.8 mm (3.5 in)
1922	46.5 mm (1.8 in)
1923	71.8 mm (2.8 in)
1924	58.7 mm (2.3 in)
1925	63.3 mm (2.5 in)
1926	62.7 mm (2.5 in)
1927	41.9 mm (1.6 in)
1928	164.6 mm (6.5 in)
1929	78.0 mm (3.1 in)
1930	52.6 mm (2.1 in)
1931	87.6 mm (3.4 in)
1932	51.6 mm (2.0 in)
1933	90.2 mm (3.6 in)
1934	57.2 mm (2.3 in)
1935	81.5 mm (3.2 in)
1936	68.4 mm (2.7 in)
1937	98.0 mm (3.9 in)
1938	45.9 mm (1.8 in)
1939	69.0 mm (2.7 in)
1940	88.6 mm (3.5 in)
1941	45.2 mm (1.8 in)
1942	56.1 mm (2.2 in)
1943	58.6 mm (2.3 in)
1944	58.7 mm (2.3 in)
1945	61.3 mm (2.4 in)
1946	33.0 mm (1.3 in)
1947	43.4 mm (1.7 in)
1948	109.5 mm (4.3 in)
1949	120.6 mm (4.7 in)
1950	88.9 mm (3.5 in)
1951	63.8 mm (2.5 in)
1952	97.5 mm (3.8 in)
1953	114.7 mm (4.5 in)
1954	56.1 mm (2.2 in)
1955	44.0 mm (1.7 in)
1956	44.3 mm (1.7 in)
1957	44.1 mm (1.7 in)
1958	56.9 mm (2.2 in)
1959	52.5 mm (2.1 in)
1960	55.6 mm (2.2 in)
1961	138.1 mm (5.4 in)
1962	76.3 mm (3.0 in)
1963	77.2 mm (3.0 in)
1964	53.0 mm (2.1 in)
1965	104.0 mm (4.1 in)
1966	41.4 mm (1.6 in)
1967	50.5 mm (2.0 in)
1968	97.5 mm (3.8 in)
1969	69.1 mm (2.7 in)
1970	104.0 mm (4.1 in)
1971	117.4 mm (4.6 in)
1972	27.0 mm (1.1 in)
1973	56.2 mm (2.2 in)
1974	107.0 mm (4.2 in)
1975	91.3 mm (3.6 in)
1976	74.1 mm (2.9 in)
1977	126.6 mm (5.0 in)
1978	70.5 mm (2.8 in)
1979	49.5 mm (1.9 in)
1980	72.3 mm (2.8 in)
1981	62.5 mm (2.5 in)
1982	44.0 mm (1.7 in)
1983	110.5 mm (4.4 in)
1984	38.0 mm (1.5 in)
1985	133.0 mm (5.2 in)
1986	50.7 mm (2.0 in)
1987	28.0 mm (1.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Groothoek, 1920 to 1987. The record is 151 days in 1986, marked on the chart; the median year is 63 days.

Longest dry spell (CDD) at Groothoek by year
Year	Longest dry spell (CDD)
1920	45 days
1921	55 days
1922	40 days
1923	42 days
1924	97 days
1925	27 days
1926	63 days
1927	69 days
1928	75 days
1929	30 days
1930	43 days
1931	57 days
1932	60 days
1933	73 days
1934	76 days
1935	51 days
1936	59 days
1937	88 days
1938	66 days
1939	53 days
1940	85 days
1941	69 days
1942	57 days
1943	59 days
1944	70 days
1945	67 days
1946	67 days
1947	58 days
1948	75 days
1949	103 days
1950	44 days
1951	89 days
1952	55 days
1953	52 days
1954	64 days
1955	53 days
1956	82 days
1957	91 days
1958	66 days
1959	52 days
1960	64 days
1961	75 days
1962	50 days
1963	64 days
1964	53 days
1965	45 days
1966	100 days
1967	63 days
1968	64 days
1969	55 days
1970	59 days
1971	45 days
1972	49 days
1973	62 days
1974	71 days
1975	62 days
1976	71 days
1977	129 days
1978	74 days
1979	46 days
1980	105 days
1981	45 days
1982	46 days
1983	54 days
1984	77 days
1985	105 days
1986	151 days
1987	39 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

66 years, 1921 to 1986

A day with at least 44.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 109.2 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Groothoek: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.5 mm (1.8 in)
5 years	60.6 mm (2.4 in)
10 years	71.8 mm (2.8 in)
25 years	86.4 mm (3.4 in)
50 years	97.6 mm (3.8 in)
100 years	109.2 mm (4.3 in)	Longer than the 66 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, 66 years of values from 1921 to 1986.

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: 100.3 mm (3.9 in) in 1977; 94.0 mm (3.7 in) in 1961; 93.2 mm (3.7 in) in 1928.

Download the Data

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