Grootfontein Weather Records (SF000896930)

Record envelope, standing records and threshold days for Grootfontein (SF000896930), South Africa, with 68 years of record.

Key Facts for Grootfontein

Grootfontein (SF000896930) is a weather station in South Africa at -32.03 latitude and 21.40 longitude, 1,396 m (4,580 ft) above sea level.
The station reports from 1930 to 1997, 68 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 tied a daily record precipitation of 1.2 mm (0.05 in) on 18 July 1997.

About the Station

Location: South Africa, -32.03 latitude, 21.40 longitude.
Elevation: 1,396 m (4,580 ft).
Period of record: 1930 to 1997, 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 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

2 new records

2 all-time records were set at Grootfontein between 24 March 1981 and 16 December 1995. Each dot is a new record.

When Grootfontein set new all-time records
Date	Kind	Detail
1981-03-24	Record daily precipitation	Record daily precipitation 80.0 mm (3.1 in)
1995-12-16	Record daily precipitation	Record daily precipitation 88.0 mm (3.5 in)

Wettest Day of Each Month

Dec: 88.0 mm (3.5 in)

The wettest day on record for each calendar month at Grootfontein. The most was 88.0 mm (3.5 in) on 16 December 1995.

Record daily precipitation for each month at Grootfontein
Month	Record daily precipitation (mm)	Date
Jan	74.0 mm (2.9 in)	19 January 1976
Feb	74.9 mm (2.9 in)	29 February 1948
Mar	80.0 mm (3.1 in)	24 March 1981
Apr	45.7 mm (1.8 in)	6 April 1941
May	35.0 mm (1.4 in)	27 May 1958
Jun	32.0 mm (1.3 in)	1 June 1986
Jul	66.3 mm (2.6 in)	14 July 1952
Aug	50.3 mm (2.0 in)	21 August 1939
Sep	35.0 mm (1.4 in)	12 September 1957
Oct	45.0 mm (1.8 in)	10 October 1982
Nov	62.5 mm (2.5 in)	30 November 1985
Dec	88.0 mm (3.5 in)	16 December 1995

Latest Records

Latest records at Grootfontein
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1997	Grootfontein, ZA	daily rain (Tie)	1.2 mm (0.05 in)	tie	40 years	4 of 100 (Routine)
8 June 1997	Grootfontein, ZA	daily rain	30.0 mm (1.2 in)	11.5 mm (0.5 in)	59 years	46 of 100 (Notable)
22 May 1997	Grootfontein, ZA	daily rain	18.5 mm (0.7 in)	13.4 mm (0.5 in)	52 years	20 of 100 (Routine)
27 December 1996	Grootfontein, ZA	daily rain	22.0 mm (0.9 in)	16.5 mm (0.6 in)	38 years	20 of 100 (Routine)
21 November 1996	Grootfontein, ZA	daily rain	8.5 mm (0.33 in)	1.0 mm (0.04 in)	31 years	16 of 100 (Routine)
6 November 1996	Grootfontein, ZA	daily rain	28.5 mm (1.1 in)	17.0 mm (0.7 in)	43 years	38 of 100 (Notable)
5 November 1996	Grootfontein, ZA	daily rain	22.5 mm (0.9 in)	7.0 mm (0.28 in)	20 years	20 of 100 (Routine)
18 October 1996	Grootfontein, ZA	daily rain	13.3 mm (0.5 in)	0.8 mm (0.03 in)	3 years	6 of 100 (Routine)
17 October 1996	Grootfontein, ZA	daily rain	14.5 mm (0.6 in)	13.2 mm (0.5 in)	3 years	20 of 100 (Routine)
24 September 1996	Grootfontein, ZA	daily rain	2.0 mm (0.08 in)	1.6 mm (0.06 in)	16 years	12 of 100 (Routine)
11 September 1996	Grootfontein, ZA	daily rain	12.3 mm (0.5 in)	6.3 mm (0.25 in)	13 years	18 of 100 (Routine)
25 August 1996	Grootfontein, ZA	daily rain	15.5 mm (0.6 in)	1.5 mm (0.06 in)	26 years	15 of 100 (Routine)
3 August 1996	Grootfontein, ZA	daily rain	15.0 mm (0.6 in)	6.5 mm (0.26 in)	41 years	20 of 100 (Routine)
23 July 1996	Grootfontein, ZA	daily rain	18.0 mm (0.7 in)	4.5 mm (0.18 in)	43 years	20 of 100 (Routine)
22 July 1996	Grootfontein, ZA	daily rain	5.3 mm (0.21 in)	3.8 mm (0.15 in)	10 years	13 of 100 (Routine)
3 July 1996	Grootfontein, ZA	daily rain	4.0 mm (0.16 in)	0.5 mm (0.02 in)	21 years	12 of 100 (Routine)
7 February 1996	Grootfontein, ZA	daily rain	0.8 mm (0.03 in)	0.3 mm (0.01 in)	8 years	8 of 100 (Routine)
16 December 1995	Grootfontein, ZA	all-time rain	88.0 mm (3.5 in)	8.0 mm (0.31 in)	14 years	39 of 100 (Notable)
30 September 1995	Grootfontein, ZA	daily rain	13.0 mm (0.5 in)	12.3 mm (0.5 in)	41 years	20 of 100 (Routine)
22 September 1995	Grootfontein, ZA	daily rain	13.5 mm (0.5 in)	13.5 mm (0.5 in)	64 years	20 of 100 (Routine)

Extremes by Year

1930 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)	88.0 mm (3.5 in)	1995	30.0 mm (1.2 in)	68
Wettest five days (Rx5day)	134.7 mm (5.3 in)	1948	43.0 mm (1.7 in)	68
Longest dry spell (CDD)	203 days	1934	66 days	68

Wettest day (Rx1day)

The wettest day of the year at Grootfontein, 1930 to 1997. The record is 88.0 mm (3.5 in) in 1995, marked on the chart; the median year is 30.0 mm (1.2 in).

Wettest day (Rx1day) at Grootfontein by year
Year	Wettest day (Rx1day)
1930	7.9 mm (0.31 in)
1931	16.8 mm (0.7 in)
1932	27.9 mm (1.1 in)
1933	21.3 mm (0.8 in)
1934	35.6 mm (1.4 in)
1935	58.4 mm (2.3 in)
1936	28.2 mm (1.1 in)
1937	29.2 mm (1.1 in)
1938	51.6 mm (2.0 in)
1939	50.3 mm (2.0 in)
1940	62.7 mm (2.5 in)
1941	45.7 mm (1.8 in)
1942	35.6 mm (1.4 in)
1943	31.8 mm (1.3 in)
1944	24.9 mm (1.0 in)
1945	14.7 mm (0.6 in)
1946	32.0 mm (1.3 in)
1947	22.9 mm (0.9 in)
1948	74.9 mm (2.9 in)
1949	16.0 mm (0.6 in)
1950	31.8 mm (1.3 in)
1951	19.6 mm (0.8 in)
1952	66.3 mm (2.6 in)
1953	77.2 mm (3.0 in)
1954	16.5 mm (0.6 in)
1955	15.5 mm (0.6 in)
1956	47.0 mm (1.9 in)
1957	35.0 mm (1.4 in)
1958	35.0 mm (1.4 in)
1959	41.5 mm (1.6 in)
1960	30.0 mm (1.2 in)
1961	60.5 mm (2.4 in)
1962	19.5 mm (0.8 in)
1963	28.0 mm (1.1 in)
1964	20.0 mm (0.8 in)
1965	30.0 mm (1.2 in)
1966	12.0 mm (0.5 in)
1967	32.0 mm (1.3 in)
1968	24.5 mm (1.0 in)
1969	30.0 mm (1.2 in)
1970	25.5 mm (1.0 in)
1971	27.0 mm (1.1 in)
1972	37.5 mm (1.5 in)
1973	36.5 mm (1.4 in)
1974	41.5 mm (1.6 in)
1975	21.5 mm (0.8 in)
1976	74.0 mm (2.9 in)
1977	33.5 mm (1.3 in)
1978	25.0 mm (1.0 in)
1979	16.0 mm (0.6 in)
1980	17.5 mm (0.7 in)
1981	80.0 mm (3.1 in)
1982	45.0 mm (1.8 in)
1983	14.0 mm (0.6 in)
1984	20.5 mm (0.8 in)
1985	62.5 mm (2.5 in)
1986	37.0 mm (1.5 in)
1987	22.0 mm (0.9 in)
1988	30.0 mm (1.2 in)
1989	23.5 mm (0.9 in)
1990	39.5 mm (1.6 in)
1991	28.8 mm (1.1 in)
1992	27.5 mm (1.1 in)
1993	36.0 mm (1.4 in)
1994	46.0 mm (1.8 in)
1995	88.0 mm (3.5 in)
1996	28.5 mm (1.1 in)
1997	44.5 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grootfontein, 1930 to 1997. The record is 134.7 mm (5.3 in) in 1948, marked on the chart; the median year is 43.0 mm (1.7 in).

Wettest five days (Rx5day) at Grootfontein by year
Year	Wettest five days (Rx5day)
1930	7.9 mm (0.31 in)
1931	17.8 mm (0.7 in)
1932	40.6 mm (1.6 in)
1933	22.3 mm (0.9 in)
1934	41.4 mm (1.6 in)
1935	58.4 mm (2.3 in)
1936	28.2 mm (1.1 in)
1937	70.6 mm (2.8 in)
1938	51.6 mm (2.0 in)
1939	50.3 mm (2.0 in)
1940	86.3 mm (3.4 in)
1941	49.5 mm (1.9 in)
1942	35.6 mm (1.4 in)
1943	39.1 mm (1.5 in)
1944	31.8 mm (1.3 in)
1945	19.3 mm (0.8 in)
1946	37.1 mm (1.5 in)
1947	43.4 mm (1.7 in)
1948	134.7 mm (5.3 in)
1949	17.8 mm (0.7 in)
1950	45.6 mm (1.8 in)
1951	19.6 mm (0.8 in)
1952	72.6 mm (2.9 in)
1953	85.7 mm (3.4 in)
1954	37.3 mm (1.5 in)
1955	27.5 mm (1.1 in)
1956	47.0 mm (1.9 in)
1957	35.0 mm (1.4 in)
1958	46.5 mm (1.8 in)
1959	44.0 mm (1.7 in)
1960	33.5 mm (1.3 in)
1961	60.5 mm (2.4 in)
1962	23.5 mm (0.9 in)
1963	36.0 mm (1.4 in)
1964	36.5 mm (1.4 in)
1965	44.0 mm (1.7 in)
1966	16.0 mm (0.6 in)
1967	53.0 mm (2.1 in)
1968	59.5 mm (2.3 in)
1969	48.0 mm (1.9 in)
1970	28.5 mm (1.1 in)
1971	30.5 mm (1.2 in)
1972	55.0 mm (2.2 in)
1973	66.0 mm (2.6 in)
1974	53.5 mm (2.1 in)
1975	26.5 mm (1.0 in)
1976	99.0 mm (3.9 in)
1977	42.5 mm (1.7 in)
1978	37.0 mm (1.5 in)
1979	19.7 mm (0.8 in)
1980	21.3 mm (0.8 in)
1981	94.6 mm (3.7 in)
1982	74.5 mm (2.9 in)
1983	14.0 mm (0.6 in)
1984	20.5 mm (0.8 in)
1985	100.0 mm (3.9 in)
1986	47.0 mm (1.9 in)
1987	22.0 mm (0.9 in)
1988	61.5 mm (2.4 in)
1989	41.5 mm (1.6 in)
1990	62.0 mm (2.4 in)
1991	34.0 mm (1.3 in)
1992	29.5 mm (1.2 in)
1993	46.0 mm (1.8 in)
1994	62.0 mm (2.4 in)
1995	99.5 mm (3.9 in)
1996	55.5 mm (2.2 in)
1997	88.0 mm (3.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grootfontein, 1930 to 1997. The record is 203 days in 1934, marked on the chart; the median year is 66 days.

Longest dry spell (CDD) at Grootfontein by year
Year	Longest dry spell (CDD)
1930	28 days
1931	53 days
1932	151 days
1933	89 days
1934	203 days
1935	59 days
1936	72 days
1937	103 days
1938	107 days
1939	132 days
1940	64 days
1941	65 days
1942	111 days
1943	54 days
1944	112 days
1945	130 days
1946	119 days
1947	138 days
1948	65 days
1949	155 days
1950	54 days
1951	142 days
1952	47 days
1953	55 days
1954	92 days
1955	83 days
1956	41 days
1957	70 days
1958	91 days
1959	75 days
1960	120 days
1961	68 days
1962	88 days
1963	35 days
1964	66 days
1965	51 days
1966	55 days
1967	64 days
1968	83 days
1969	58 days
1970	47 days
1971	102 days
1972	66 days
1973	80 days
1974	42 days
1975	51 days
1976	47 days
1977	70 days
1978	106 days
1979	53 days
1980	73 days
1981	46 days
1982	49 days
1983	58 days
1984	76 days
1985	57 days
1986	38 days
1987	41 days
1988	36 days
1989	33 days
1990	140 days
1991	53 days
1992	77 days
1993	48 days
1994	54 days
1995	71 days
1996	35 days
1997	119 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, 1931 to 1997

A day with at least 31.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 103.4 mm (4.1 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	31.4 mm (1.2 in)
5 years	46.9 mm (1.8 in)
10 years	58.6 mm (2.3 in)
25 years	75.0 mm (3.0 in)
50 years	88.6 mm (3.5 in)
100 years	103.4 mm (4.1 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 1931 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: 88.0 mm (3.5 in) in 1995; 80.0 mm (3.1 in) in 1981; 77.2 mm (3.0 in) in 1953.

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