Grootdoornrivier Weather Records (SF000284070)

Record envelope, standing records and threshold days for Grootdoornrivier (SF000284070), South Africa, with 72 years of record.

Key Facts for Grootdoornrivier

Grootdoornrivier (SF000284070) is a weather station in South Africa at -33.78 latitude and 22.23 longitude, 411 m (1,348 ft) above sea level.
The station reports from 1926 to 1997, 72 years of record.
0 records set at Grootdoornrivier still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grootdoornrivier set a daily record precipitation of 27.0 mm (1.1 in) on 26 May 1997.

About the Station

Location: South Africa, -33.78 latitude, 22.23 longitude.
Elevation: 411 m (1,348 ft).
Period of record: 1926 to 1997, 72 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 Grootdoornrivier. 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 Grootdoornrivier, 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 Grootdoornrivier still stand.

Wettest Day of Each Month

Jan: 151.9 mm (6.0 in)

The wettest day on record for each calendar month at Grootdoornrivier. The most was 151.9 mm (6.0 in) on 1 January 1932.

Record daily precipitation for each month at Grootdoornrivier
Month	Record daily precipitation (mm)	Date
Jan	151.9 mm (6.0 in)	1 January 1932
Feb	42.0 mm (1.7 in)	21 February 1955
Mar	84.4 mm (3.3 in)	6 March 1994
Apr	81.0 mm (3.2 in)	26 April 1981
May	66.5 mm (2.6 in)	8 May 1977
Jun	49.5 mm (1.9 in)	8 June 1975
Jul	46.0 mm (1.8 in)	22 July 1992
Aug	80.0 mm (3.1 in)	27 August 1954
Sep	74.4 mm (2.9 in)	16 September 1947
Oct	64.0 mm (2.5 in)	21 October 1996
Nov	118.0 mm (4.6 in)	20 November 1996
Dec	41.1 mm (1.6 in)	17 December 1937

Latest Records

Latest records at Grootdoornrivier
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 May 1997	Grootdoornrivier, ZA	daily rain	27.0 mm (1.1 in)	12.5 mm (0.5 in)	30 years	28 of 100 (Routine)
25 May 1997	Grootdoornrivier, ZA	daily rain	34.0 mm (1.3 in)	17.0 mm (0.7 in)	30 years	32 of 100 (Routine)
4 April 1997	Grootdoornrivier, ZA	daily rain	38.5 mm (1.5 in)	18.5 mm (0.7 in)	26 years	31 of 100 (Routine)
20 November 1996	Grootdoornrivier, ZA	monthly rain	118.0 mm (4.6 in)	63.6 mm (2.5 in)	46 years	70 of 100 (Major)
19 November 1996	Grootdoornrivier, ZA	daily rain	14.7 mm (0.6 in)	6.2 mm (0.24 in)	34 years	20 of 100 (Routine)
6 November 1996	Grootdoornrivier, ZA	daily rain	18.5 mm (0.7 in)	3.5 mm (0.14 in)	32 years	19 of 100 (Routine)
21 October 1996	Grootdoornrivier, ZA	monthly rain	64.0 mm (2.5 in)	7.0 mm (0.28 in)	43 years	36 of 100 (Notable)
18 October 1996	Grootdoornrivier, ZA	daily rain	24.2 mm (1.0 in)	13.0 mm (0.5 in)	46 years	20 of 100 (Routine)
17 September 1996	Grootdoornrivier, ZA	daily rain (Tie)	3.5 mm (0.14 in)	tie	6 years	2 of 100 (Routine)
3 August 1996	Grootdoornrivier, ZA	daily rain	13.4 mm (0.5 in)	6.5 mm (0.26 in)	65 years	20 of 100 (Routine)
31 May 1996	Grootdoornrivier, ZA	daily rain	14.1 mm (0.6 in)	4.6 mm (0.18 in)	29 years	19 of 100 (Routine)
21 January 1996	Grootdoornrivier, ZA	daily rain	8.4 mm (0.33 in)	0.9 mm (0.04 in)	21 years	13 of 100 (Routine)
28 November 1995	Grootdoornrivier, ZA	daily rain	50.5 mm (2.0 in)	2.5 mm (0.10 in)	68 years	29 of 100 (Routine)
21 November 1995	Grootdoornrivier, ZA	daily rain	9.0 mm (0.35 in)	4.5 mm (0.18 in)	30 years	20 of 100 (Routine)
19 August 1995	Grootdoornrivier, ZA	daily rain	16.1 mm (0.6 in)	3.6 mm (0.14 in)	24 years	17 of 100 (Routine)
14 June 1995	Grootdoornrivier, ZA	daily rain	13.7 mm (0.5 in)	11.3 mm (0.4 in)	6 years	20 of 100 (Routine)
18 May 1995	Grootdoornrivier, ZA	daily rain	1.7 mm (0.07 in)	1.7 mm (0.07 in)	68 years	20 of 100 (Routine)
22 December 1994	Grootdoornrivier, ZA	daily rain	33.5 mm (1.3 in)	10.5 mm (0.4 in)	36 years	28 of 100 (Routine)
1 August 1994	Grootdoornrivier, ZA	daily rain	9.0 mm (0.35 in)	2.0 mm (0.08 in)	36 years	18 of 100 (Routine)
24 July 1994	Grootdoornrivier, ZA	daily rain	17.0 mm (0.7 in)	2.0 mm (0.08 in)	11 years	11 of 100 (Routine)

Extremes by Year

1926 to 1997

Yearly extremes at Grootdoornrivier: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	151.9 mm (6.0 in)	1932	36.1 mm (1.4 in)	72
Wettest five days (Rx5day)	223.2 mm (8.8 in)	1932	53.1 mm (2.1 in)	72
Longest dry spell (CDD)	119 days	1951	53 days	72

Wettest day (Rx1day)

The wettest day of the year at Grootdoornrivier, 1926 to 1997. The record is 151.9 mm (6.0 in) in 1932, marked on the chart; the median year is 36.1 mm (1.4 in).

Wettest day (Rx1day) at Grootdoornrivier by year
Year	Wettest day (Rx1day)
1926	50.8 mm (2.0 in)
1927	44.5 mm (1.8 in)
1928	20.3 mm (0.8 in)
1929	21.1 mm (0.8 in)
1930	18.5 mm (0.7 in)
1931	13.2 mm (0.5 in)
1932	151.9 mm (6.0 in)
1933	57.7 mm (2.3 in)
1934	27.9 mm (1.1 in)
1935	18.0 mm (0.7 in)
1936	24.9 mm (1.0 in)
1937	41.1 mm (1.6 in)
1938	35.6 mm (1.4 in)
1939	23.1 mm (0.9 in)
1940	33.0 mm (1.3 in)
1941	28.2 mm (1.1 in)
1942	16.8 mm (0.7 in)
1943	29.0 mm (1.1 in)
1944	36.6 mm (1.4 in)
1945	54.9 mm (2.2 in)
1946	18.3 mm (0.7 in)
1947	74.4 mm (2.9 in)
1948	38.1 mm (1.5 in)
1949	33.0 mm (1.3 in)
1950	54.4 mm (2.1 in)
1951	77.5 mm (3.1 in)
1952	33.5 mm (1.3 in)
1953	57.0 mm (2.2 in)
1954	80.0 mm (3.1 in)
1955	42.0 mm (1.7 in)
1956	37.5 mm (1.5 in)
1957	24.5 mm (1.0 in)
1958	25.0 mm (1.0 in)
1959	42.0 mm (1.7 in)
1960	17.0 mm (0.7 in)
1961	27.5 mm (1.1 in)
1962	62.0 mm (2.4 in)
1963	50.0 mm (2.0 in)
1964	44.0 mm (1.7 in)
1965	28.5 mm (1.1 in)
1966	7.5 mm (0.30 in)
1967	45.0 mm (1.8 in)
1968	40.0 mm (1.6 in)
1969	31.0 mm (1.2 in)
1970	45.5 mm (1.8 in)
1971	26.5 mm (1.0 in)
1972	35.5 mm (1.4 in)
1973	21.5 mm (0.8 in)
1974	55.0 mm (2.2 in)
1975	49.5 mm (1.9 in)
1976	27.0 mm (1.1 in)
1977	66.5 mm (2.6 in)
1978	28.5 mm (1.1 in)
1979	24.0 mm (0.9 in)
1980	23.5 mm (0.9 in)
1981	81.0 mm (3.2 in)
1982	30.5 mm (1.2 in)
1983	39.0 mm (1.5 in)
1984	26.7 mm (1.1 in)
1985	40.5 mm (1.6 in)
1986	20.0 mm (0.8 in)
1987	37.5 mm (1.5 in)
1988	21.0 mm (0.8 in)
1989	33.5 mm (1.3 in)
1990	27.5 mm (1.1 in)
1991	39.5 mm (1.6 in)
1992	46.0 mm (1.8 in)
1993	79.8 mm (3.1 in)
1994	84.4 mm (3.3 in)
1995	50.5 mm (2.0 in)
1996	118.0 mm (4.6 in)
1997	38.5 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grootdoornrivier, 1926 to 1997. The record is 223.2 mm (8.8 in) in 1932, marked on the chart; the median year is 53.1 mm (2.1 in).

Wettest five days (Rx5day) at Grootdoornrivier by year
Year	Wettest five days (Rx5day)
1926	95.8 mm (3.8 in)
1927	45.5 mm (1.8 in)
1928	26.4 mm (1.0 in)
1929	33.0 mm (1.3 in)
1930	24.1 mm (0.9 in)
1931	17.3 mm (0.7 in)
1932	223.2 mm (8.8 in)
1933	74.2 mm (2.9 in)
1934	27.9 mm (1.1 in)
1935	28.3 mm (1.1 in)
1936	43.2 mm (1.7 in)
1937	47.5 mm (1.9 in)
1938	41.7 mm (1.6 in)
1939	25.1 mm (1.0 in)
1940	61.7 mm (2.4 in)
1941	37.6 mm (1.5 in)
1942	21.3 mm (0.8 in)
1943	29.0 mm (1.1 in)
1944	55.2 mm (2.2 in)
1945	128.9 mm (5.1 in)
1946	29.4 mm (1.2 in)
1947	74.4 mm (2.9 in)
1948	67.9 mm (2.7 in)
1949	52.3 mm (2.1 in)
1950	84.3 mm (3.3 in)
1951	77.5 mm (3.1 in)
1952	36.5 mm (1.4 in)
1953	68.3 mm (2.7 in)
1954	121.0 mm (4.8 in)
1955	60.5 mm (2.4 in)
1956	37.5 mm (1.5 in)
1957	31.5 mm (1.2 in)
1958	25.5 mm (1.0 in)
1959	52.0 mm (2.0 in)
1960	18.5 mm (0.7 in)
1961	35.5 mm (1.4 in)
1962	89.5 mm (3.5 in)
1963	66.5 mm (2.6 in)
1964	77.5 mm (3.1 in)
1965	54.0 mm (2.1 in)
1966	17.0 mm (0.7 in)
1967	56.5 mm (2.2 in)
1968	64.5 mm (2.5 in)
1969	41.0 mm (1.6 in)
1970	56.0 mm (2.2 in)
1971	54.0 mm (2.1 in)
1972	63.5 mm (2.5 in)
1973	21.5 mm (0.8 in)
1974	55.0 mm (2.2 in)
1975	59.0 mm (2.3 in)
1976	30.5 mm (1.2 in)
1977	142.0 mm (5.6 in)
1978	28.5 mm (1.1 in)
1979	43.5 mm (1.7 in)
1980	54.5 mm (2.1 in)
1981	111.0 mm (4.4 in)
1982	55.8 mm (2.2 in)
1983	53.8 mm (2.1 in)
1984	45.9 mm (1.8 in)
1985	50.6 mm (2.0 in)
1986	30.2 mm (1.2 in)
1987	42.5 mm (1.7 in)
1988	21.2 mm (0.8 in)
1989	37.1 mm (1.5 in)
1990	33.5 mm (1.3 in)
1991	71.5 mm (2.8 in)
1992	62.1 mm (2.4 in)
1993	99.1 mm (3.9 in)
1994	95.8 mm (3.8 in)
1995	58.0 mm (2.3 in)
1996	132.7 mm (5.2 in)
1997	69.1 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grootdoornrivier, 1926 to 1997. The record is 119 days in 1951, marked on the chart; the median year is 53 days.

Longest dry spell (CDD) at Grootdoornrivier by year
Year	Longest dry spell (CDD)
1926	53 days
1927	96 days
1928	88 days
1929	65 days
1930	62 days
1931	67 days
1932	57 days
1933	53 days
1934	55 days
1935	48 days
1936	50 days
1937	40 days
1938	45 days
1939	33 days
1940	38 days
1941	86 days
1942	52 days
1943	50 days
1944	84 days
1945	29 days
1946	78 days
1947	63 days
1948	79 days
1949	77 days
1950	107 days
1951	119 days
1952	41 days
1953	39 days
1954	41 days
1955	32 days
1956	34 days
1957	82 days
1958	51 days
1959	49 days
1960	70 days
1961	55 days
1962	41 days
1963	63 days
1964	39 days
1965	47 days
1966	72 days
1967	45 days
1968	83 days
1969	66 days
1970	103 days
1971	46 days
1972	42 days
1973	47 days
1974	84 days
1975	68 days
1976	35 days
1977	54 days
1978	79 days
1979	82 days
1980	51 days
1981	44 days
1982	63 days
1983	39 days
1984	53 days
1985	47 days
1986	35 days
1987	70 days
1988	58 days
1989	47 days
1990	31 days
1991	46 days
1992	38 days
1993	48 days
1994	63 days
1995	42 days
1996	30 days
1997	72 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

70 years, 1927 to 1997

A day with at least 34.8 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 135.3 mm (5.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Grootdoornrivier: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	34.8 mm (1.4 in)
5 years	53.8 mm (2.1 in)
10 years	69.1 mm (2.7 in)
25 years	92.0 mm (3.6 in)
50 years	112.2 mm (4.4 in)
100 years	135.3 mm (5.3 in)	Longer than the 70 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, 70 years of values from 1927 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: 151.9 mm (6.0 in) in 1932; 118.0 mm (4.6 in) in 1996; 84.4 mm (3.3 in) in 1994.

Download the Data

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