Grootvlei (Pol) Weather Records (SF004400180)

Record envelope, standing records and threshold days for Grootvlei (Pol) (SF004400180), South Africa, with 93 years of record.

Key Facts for Grootvlei (Pol)

Grootvlei (Pol) (SF004400180) is a weather station in South Africa at -26.80 latitude and 28.52 longitude, 1,540 m (5,052 ft) above sea level.
The station reports from 1905 to 1997, 93 years of record.
0 records set at Grootvlei (Pol) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grootvlei (Pol) set a daily record precipitation of 44.0 mm (1.7 in) on 30 November 1997.

About the Station

Location: South Africa, -26.80 latitude, 28.52 longitude.
Elevation: 1,540 m (5,052 ft).
Period of record: 1905 to 1997, 93 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 Grootvlei (Pol). 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 Grootvlei (Pol), 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 Grootvlei (Pol) still stand.

All-Time Record Progression

3 new records

3 all-time records were set at Grootvlei (Pol) between 29 March 1936 and 7 November 1992. Each dot is a new record.

When Grootvlei (Pol) set new all-time records
Date	Kind	Detail
1936-03-29	Record daily precipitation	Record daily precipitation 98.0 mm (3.9 in)
1976-02-11	Record daily precipitation	Record daily precipitation 98.5 mm (3.9 in)
1992-11-07	Record daily precipitation	Record daily precipitation 101.0 mm (4.0 in)

Wettest Day of Each Month

Nov: 101.0 mm (4.0 in)

The wettest day on record for each calendar month at Grootvlei (Pol). The most was 101.0 mm (4.0 in) on 7 November 1992.

Record daily precipitation for each month at Grootvlei (Pol)
Month	Record daily precipitation (mm)	Date
Jan	82.8 mm (3.3 in)	16 January 1970
Feb	98.5 mm (3.9 in)	11 February 1976
Mar	98.0 mm (3.9 in)	29 March 1936
Apr	69.9 mm (2.8 in)	19 April 1914
May	75.0 mm (3.0 in)	3 May 1976
Jun	36.6 mm (1.4 in)	6 June 1929
Jul	50.0 mm (2.0 in)	11 July 1984
Aug	49.0 mm (1.9 in)	1 August 1918
Sep	67.3 mm (2.6 in)	20 September 1932
Oct	69.5 mm (2.7 in)	16 October 1978
Nov	101.0 mm (4.0 in)	7 November 1992
Dec	72.4 mm (2.9 in)	17 December 1930

Latest Records

Latest records at Grootvlei (Pol)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 November 1997	Grootvlei (Pol), ZA	daily rain	44.0 mm (1.7 in)	9.7 mm (0.38 in)	84 years	41 of 100 (Notable)
26 November 1997	Grootvlei (Pol), ZA	daily rain	57.0 mm (2.2 in)	13.0 mm (0.5 in)	22 years	25 of 100 (Routine)
13 November 1997	Grootvlei (Pol), ZA	daily rain	36.0 mm (1.4 in)	7.0 mm (0.28 in)	88 years	40 of 100 (Notable)
10 September 1997	Grootvlei (Pol), ZA	daily rain	31.0 mm (1.2 in)	11.9 mm (0.5 in)	68 years	40 of 100 (Notable)
9 September 1997	Grootvlei (Pol), ZA	daily rain	30.0 mm (1.2 in)	5.9 mm (0.23 in)	87 years	40 of 100 (Notable)
26 May 1997	Grootvlei (Pol), ZA	daily rain	21.0 mm (0.8 in)	21.0 mm (0.8 in)	91 years	20 of 100 (Routine)
25 May 1997	Grootvlei (Pol), ZA	daily rain	70.0 mm (2.8 in)	59.3 mm (2.3 in)	54 years	65 of 100 (Major)
27 March 1997	Grootvlei (Pol), ZA	daily rain	24.0 mm (0.9 in)	10.8 mm (0.4 in)	68 years	20 of 100 (Routine)
4 March 1997	Grootvlei (Pol), ZA	daily rain	48.0 mm (1.9 in)	16.5 mm (0.6 in)	64 years	42 of 100 (Notable)
20 October 1996	Grootvlei (Pol), ZA	daily rain	32.0 mm (1.3 in)	2.5 mm (0.10 in)	3 years	11 of 100 (Routine)
6 July 1996	Grootvlei (Pol), ZA	daily rain	6.5 mm (0.26 in)	6.5 mm (0.26 in)	90 years	20 of 100 (Routine)
3 March 1996	Grootvlei (Pol), ZA	daily rain	31.0 mm (1.2 in)	1.8 mm (0.07 in)	51 years	25 of 100 (Routine)
23 February 1996	Grootvlei (Pol), ZA	daily rain	41.0 mm (1.6 in)	8.9 mm (0.35 in)	14 years	20 of 100 (Routine)
16 December 1995	Grootvlei (Pol), ZA	daily rain	57.0 mm (2.2 in)	25.5 mm (1.0 in)	10 years	34 of 100 (Routine)
29 October 1995	Grootvlei (Pol), ZA	daily rain	29.0 mm (1.1 in)	4.1 mm (0.16 in)	73 years	35 of 100 (Notable)
25 March 1995	Grootvlei (Pol), ZA	daily rain	33.0 mm (1.3 in)	4.0 mm (0.16 in)	9 years	14 of 100 (Routine)
25 October 1993	Grootvlei (Pol), ZA	daily rain	27.5 mm (1.1 in)	8.5 mm (0.33 in)	23 years	22 of 100 (Routine)
20 October 1993	Grootvlei (Pol), ZA	daily rain	29.5 mm (1.2 in)	7.0 mm (0.28 in)	4 years	16 of 100 (Routine)
10 October 1993	Grootvlei (Pol), ZA	daily rain	26.0 mm (1.0 in)	5.7 mm (0.22 in)	44 years	26 of 100 (Routine)
5 October 1993	Grootvlei (Pol), ZA	daily rain	41.0 mm (1.6 in)	24.5 mm (1.0 in)	71 years	53 of 100 (Notable)

Extremes by Year

1905 to 1997

Yearly extremes at Grootvlei (Pol): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	101.0 mm (4.0 in)	1992	52.4 mm (2.1 in)	76
Wettest five days (Rx5day)	157.0 mm (6.2 in)	1992	86.0 mm (3.4 in)	76
Longest dry spell (CDD)	165 days	1946	80 days	76

Wettest day (Rx1day)

The wettest day of the year at Grootvlei (Pol), 1905 to 1997. The record is 101.0 mm (4.0 in) in 1992, marked on the chart; the median year is 52.4 mm (2.1 in).

Wettest day (Rx1day) at Grootvlei (Pol) by year
Year	Wettest day (Rx1day)
1905	23.1 mm (0.9 in)
1906	49.3 mm (1.9 in)
1907	39.6 mm (1.6 in)
1908	45.0 mm (1.8 in)
1909	80.0 mm (3.1 in)
1910	78.7 mm (3.1 in)
1911	50.8 mm (2.0 in)
1912	55.9 mm (2.2 in)
1913	45.7 mm (1.8 in)
1914	69.9 mm (2.8 in)
1915	58.9 mm (2.3 in)
1916	61.2 mm (2.4 in)
1917	77.0 mm (3.0 in)
1918	76.7 mm (3.0 in)
1919	49.8 mm (2.0 in)
1920	63.5 mm (2.5 in)
1921	47.0 mm (1.9 in)
1922	38.9 mm (1.5 in)
1923	30.7 mm (1.2 in)
1924	49.8 mm (2.0 in)
1925	54.6 mm (2.1 in)
1926	38.6 mm (1.5 in)
1927	47.5 mm (1.9 in)
1928	53.3 mm (2.1 in)
1929	82.6 mm (3.3 in)
1930	72.4 mm (2.9 in)
1931	55.9 mm (2.2 in)
1932	67.3 mm (2.6 in)
1933	53.8 mm (2.1 in)
1934	52.8 mm (2.1 in)
1935	37.8 mm (1.5 in)
1936	98.0 mm (3.9 in)
1937	69.9 mm (2.8 in)
1938	49.8 mm (2.0 in)
1939	29.7 mm (1.2 in)
1940	38.4 mm (1.5 in)
1941	38.4 mm (1.5 in)
1942	55.9 mm (2.2 in)
1943	36.3 mm (1.4 in)
1944	63.8 mm (2.5 in)
1945	41.9 mm (1.6 in)
1946	57.2 mm (2.3 in)
1947	44.5 mm (1.8 in)
1948	38.1 mm (1.5 in)
1949	26.7 mm (1.1 in)
1967	34.0 mm (1.3 in)
1968	46.0 mm (1.8 in)
1969	40.0 mm (1.6 in)
1970	82.8 mm (3.3 in)
1971	50.0 mm (2.0 in)
1972	46.5 mm (1.8 in)
1973	74.5 mm (2.9 in)
1974	36.0 mm (1.4 in)
1975	68.0 mm (2.7 in)
1976	98.5 mm (3.9 in)
1977	61.0 mm (2.4 in)
1978	76.8 mm (3.0 in)
1979	44.5 mm (1.8 in)
1980	74.1 mm (2.9 in)
1981	34.1 mm (1.3 in)
1982	37.1 mm (1.5 in)
1983	35.2 mm (1.4 in)
1984	50.0 mm (2.0 in)
1985	55.0 mm (2.2 in)
1986	52.0 mm (2.0 in)
1987	54.2 mm (2.1 in)
1988	53.5 mm (2.1 in)
1989	57.0 mm (2.2 in)
1990	60.0 mm (2.4 in)
1991	68.0 mm (2.7 in)
1992	101.0 mm (4.0 in)
1993	49.0 mm (1.9 in)
1994	35.0 mm (1.4 in)
1995	57.0 mm (2.2 in)
1996	48.0 mm (1.9 in)
1997	70.0 mm (2.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grootvlei (Pol), 1905 to 1997. The record is 157.0 mm (6.2 in) in 1992, marked on the chart; the median year is 86.0 mm (3.4 in).

Wettest five days (Rx5day) at Grootvlei (Pol) by year
Year	Wettest five days (Rx5day)
1905	50.8 mm (2.0 in)
1906	72.4 mm (2.9 in)
1907	56.8 mm (2.2 in)
1908	105.2 mm (4.1 in)
1909	103.1 mm (4.1 in)
1910	113.0 mm (4.4 in)
1911	67.0 mm (2.6 in)
1912	126.0 mm (5.0 in)
1913	75.7 mm (3.0 in)
1914	93.0 mm (3.7 in)
1915	138.0 mm (5.4 in)
1916	82.1 mm (3.2 in)
1917	133.1 mm (5.2 in)
1918	148.6 mm (5.9 in)
1919	104.9 mm (4.1 in)
1920	109.2 mm (4.3 in)
1921	86.1 mm (3.4 in)
1922	62.0 mm (2.4 in)
1923	54.0 mm (2.1 in)
1924	67.9 mm (2.7 in)
1925	100.8 mm (4.0 in)
1926	82.1 mm (3.2 in)
1927	59.7 mm (2.4 in)
1928	97.5 mm (3.8 in)
1929	110.6 mm (4.4 in)
1930	94.0 mm (3.7 in)
1931	91.2 mm (3.6 in)
1932	68.3 mm (2.7 in)
1933	123.4 mm (4.9 in)
1934	105.0 mm (4.1 in)
1935	51.3 mm (2.0 in)
1936	124.6 mm (4.9 in)
1937	82.1 mm (3.2 in)
1938	62.5 mm (2.5 in)
1939	49.5 mm (1.9 in)
1940	66.6 mm (2.6 in)
1941	59.2 mm (2.3 in)
1942	70.6 mm (2.8 in)
1943	67.4 mm (2.7 in)
1944	132.9 mm (5.2 in)
1945	55.1 mm (2.2 in)
1946	113.9 mm (4.5 in)
1947	67.4 mm (2.7 in)
1948	53.4 mm (2.1 in)
1949	46.7 mm (1.8 in)
1967	44.5 mm (1.8 in)
1968	108.5 mm (4.3 in)
1969	70.2 mm (2.8 in)
1970	93.3 mm (3.7 in)
1971	108.5 mm (4.3 in)
1972	95.0 mm (3.7 in)
1973	109.0 mm (4.3 in)
1974	67.5 mm (2.7 in)
1975	119.7 mm (4.7 in)
1976	111.0 mm (4.4 in)
1977	79.0 mm (3.1 in)
1978	108.6 mm (4.3 in)
1979	85.9 mm (3.4 in)
1980	110.4 mm (4.3 in)
1981	51.2 mm (2.0 in)
1982	57.0 mm (2.2 in)
1983	84.6 mm (3.3 in)
1984	58.5 mm (2.3 in)
1985	91.7 mm (3.6 in)
1986	75.0 mm (3.0 in)
1987	104.5 mm (4.1 in)
1988	111.0 mm (4.4 in)
1989	66.0 mm (2.6 in)
1990	94.5 mm (3.7 in)
1991	88.0 mm (3.5 in)
1992	157.0 mm (6.2 in)
1993	70.0 mm (2.8 in)
1994	51.0 mm (2.0 in)
1995	90.0 mm (3.5 in)
1996	61.5 mm (2.4 in)
1997	107.0 mm (4.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grootvlei (Pol), 1905 to 1997. The record is 165 days in 1946, marked on the chart; the median year is 80 days.

Longest dry spell (CDD) at Grootvlei (Pol) by year
Year	Longest dry spell (CDD)
1905	43 days
1906	102 days
1907	103 days
1908	86 days
1909	41 days
1910	93 days
1911	77 days
1912	28 days
1913	92 days
1914	55 days
1915	72 days
1916	157 days
1917	44 days
1918	132 days
1919	129 days
1920	65 days
1921	120 days
1922	69 days
1923	74 days
1924	87 days
1925	77 days
1926	75 days
1927	114 days
1928	68 days
1929	30 days
1930	51 days
1931	84 days
1932	92 days
1933	57 days
1934	35 days
1935	109 days
1936	110 days
1937	128 days
1938	50 days
1939	62 days
1940	66 days
1941	26 days
1942	32 days
1943	55 days
1944	92 days
1945	137 days
1946	165 days
1947	54 days
1948	81 days
1949	38 days
1967	30 days
1968	102 days
1969	68 days
1970	40 days
1971	56 days
1972	83 days
1973	112 days
1974	103 days
1975	95 days
1976	146 days
1977	136 days
1978	118 days
1979	32 days
1980	138 days
1981	77 days
1982	65 days
1983	44 days
1984	72 days
1985	109 days
1986	85 days
1987	71 days
1988	53 days
1989	56 days
1990	117 days
1991	91 days
1992	111 days
1993	106 days
1994	84 days
1995	116 days
1996	78 days
1997	96 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

64 years, 1906 to 1996

A day with at least 54.2 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 108.1 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Grootvlei (Pol): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	54.2 mm (2.1 in)
5 years	69.6 mm (2.7 in)
10 years	79.4 mm (3.1 in)
25 years	91.3 mm (3.6 in)
50 years	99.9 mm (3.9 in)
100 years	108.1 mm (4.3 in)	Longer than the 64 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, 64 years of values from 1906 to 1996.

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: 101.0 mm (4.0 in) in 1992; 98.5 mm (3.9 in) in 1976; 98.0 mm (3.9 in) in 1936.

Download the Data

Data for Grootvlei (Pol) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grootvlei (Pol) 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