Slangfontein Weather Records (SF002300730)

Record envelope, standing records and threshold days for Slangfontein (SF002300730), South Africa, with 75 years of record.

Key Facts for Slangfontein

Slangfontein (SF002300730) is a weather station in South Africa at -29.72 latitude and 25.55 longitude, 1,326 m (4,350 ft) above sea level.
The station reports from 1923 to 1997, 75 years of record.
0 records set at Slangfontein still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Slangfontein set a daily record precipitation of 4.0 mm (0.16 in) on 27 July 1997.

About the Station

Location: South Africa, -29.72 latitude, 25.55 longitude.
Elevation: 1,326 m (4,350 ft).
Period of record: 1923 to 1997, 75 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 Slangfontein. 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 Slangfontein, 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 Slangfontein still stand.

All-Time Record Progression

3 new records

3 all-time records were set at Slangfontein between 19 February 1988 and 5 February 1994. Each dot is a new record.

When Slangfontein set new all-time records
Date	Kind	Detail
1988-02-19	Record daily precipitation	Record daily precipitation 81.3 mm (3.2 in)
1988-02-20	Record daily precipitation	Record daily precipitation 82.0 mm (3.2 in)
1994-02-05	Record daily precipitation	Record daily precipitation 94.0 mm (3.7 in)

Wettest Day of Each Month

Feb: 94.0 mm (3.7 in)

The wettest day on record for each calendar month at Slangfontein. The most was 94.0 mm (3.7 in) on 5 February 1994.

Record daily precipitation for each month at Slangfontein
Month	Record daily precipitation (mm)	Date
Jan	72.0 mm (2.8 in)	5 January 1976
Feb	94.0 mm (3.7 in)	5 February 1994
Mar	81.5 mm (3.2 in)	17 March 1991
Apr	58.5 mm (2.3 in)	10 April 1969
May	68.1 mm (2.7 in)	14 May 1950
Jun	43.9 mm (1.7 in)	14 June 1944
Jul	41.5 mm (1.6 in)	16 July 1970
Aug	64.0 mm (2.5 in)	20 August 1974
Sep	70.4 mm (2.8 in)	20 September 1944
Oct	77.2 mm (3.0 in)	11 October 1934
Nov	65.0 mm (2.6 in)	28 November 1983
Dec	73.0 mm (2.9 in)	7 December 1968

Latest Records

Latest records at Slangfontein
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 1997	Slangfontein, ZA	daily rain	4.0 mm (0.16 in)	4.0 mm (0.16 in)	74 years	20 of 100 (Routine)
11 June 1997	Slangfontein, ZA	daily rain	21.5 mm (0.8 in)	13.4 mm (0.5 in)	52 years	20 of 100 (Routine)
24 March 1997	Slangfontein, ZA	daily rain	15.0 mm (0.6 in)	0.7 mm (0.03 in)	16 years	11 of 100 (Routine)
28 December 1996	Slangfontein, ZA	daily rain	56.5 mm (2.2 in)	46.4 mm (1.8 in)	8 years	48 of 100 (Notable)
22 December 1996	Slangfontein, ZA	daily rain	22.3 mm (0.9 in)	6.2 mm (0.24 in)	9 years	14 of 100 (Routine)
24 November 1996	Slangfontein, ZA	daily rain	35.0 mm (1.4 in)	10.0 mm (0.4 in)	23 years	22 of 100 (Routine)
7 November 1996	Slangfontein, ZA	daily rain	51.0 mm (2.0 in)	0.9 mm (0.04 in)	10 years	10 of 100 (Routine)
4 August 1996	Slangfontein, ZA	daily rain	11.0 mm (0.4 in)	11.0 mm (0.4 in)	73 years	20 of 100 (Routine)
25 July 1996	Slangfontein, ZA	daily rain	24.0 mm (0.9 in)	8.0 mm (0.31 in)	14 years	20 of 100 (Routine)
22 July 1996	Slangfontein, ZA	daily rain	10.0 mm (0.4 in)	8.0 mm (0.31 in)	4 years	17 of 100 (Routine)
24 June 1996	Slangfontein, ZA	daily rain	0.2 mm (0.01 in)	0.2 mm (0.01 in)	73 years	20 of 100 (Routine)
21 March 1996	Slangfontein, ZA	daily rain	44.0 mm (1.7 in)	5.1 mm (0.20 in)	47 years	25 of 100 (Routine)
17 December 1995	Slangfontein, ZA	daily rain	29.0 mm (1.1 in)	15.0 mm (0.6 in)	28 years	27 of 100 (Routine)
11 December 1995	Slangfontein, ZA	daily rain	20.4 mm (0.8 in)	0.2 mm (0.01 in)	13 years	11 of 100 (Routine)
20 November 1995	Slangfontein, ZA	daily rain	26.0 mm (1.0 in)	16.3 mm (0.6 in)	44 years	35 of 100 (Notable)
5 February 1994	Slangfontein, ZA	all-time rain	94.0 mm (3.7 in)	12.0 mm (0.5 in)	5 years	36 of 100 (Notable)
29 December 1993	Slangfontein, ZA	daily rain	58.5 mm (2.3 in)	7.2 mm (0.28 in)	66 years	32 of 100 (Routine)
10 August 1993	Slangfontein, ZA	daily rain	11.5 mm (0.5 in)	7.7 mm (0.30 in)	51 years	20 of 100 (Routine)
18 July 1993	Slangfontein, ZA	daily rain	3.0 mm (0.12 in)	1.5 mm (0.06 in)	6 years	9 of 100 (Routine)
3 March 1993	Slangfontein, ZA	daily rain	22.6 mm (0.9 in)	6.9 mm (0.27 in)	51 years	20 of 100 (Routine)

Extremes by Year

1923 to 1997

Yearly extremes at Slangfontein: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	94.0 mm (3.7 in)	1994	50.5 mm (2.0 in)	73
Wettest five days (Rx5day)	251.3 mm (9.9 in)	1988	72.4 mm (2.9 in)	73
Longest dry spell (CDD)	232 days	1923	76 days	73

Wettest day (Rx1day)

The wettest day of the year at Slangfontein, 1923 to 1997. The record is 94.0 mm (3.7 in) in 1994, marked on the chart; the median year is 50.5 mm (2.0 in).

Wettest day (Rx1day) at Slangfontein by year
Year	Wettest day (Rx1day)
1923	43.2 mm (1.7 in)
1924	37.3 mm (1.5 in)
1925	45.7 mm (1.8 in)
1926	25.4 mm (1.0 in)
1927	51.3 mm (2.0 in)
1928	31.8 mm (1.3 in)
1929	28.4 mm (1.1 in)
1930	43.9 mm (1.7 in)
1931	40.6 mm (1.6 in)
1932	53.3 mm (2.1 in)
1933	49.5 mm (1.9 in)
1934	77.2 mm (3.0 in)
1935	47.0 mm (1.9 in)
1936	50.8 mm (2.0 in)
1937	67.3 mm (2.6 in)
1938	71.6 mm (2.8 in)
1939	55.6 mm (2.2 in)
1940	52.8 mm (2.1 in)
1941	74.9 mm (2.9 in)
1942	40.6 mm (1.6 in)
1943	51.6 mm (2.0 in)
1944	70.4 mm (2.8 in)
1945	50.8 mm (2.0 in)
1946	62.2 mm (2.4 in)
1947	30.0 mm (1.2 in)
1948	74.7 mm (2.9 in)
1949	38.9 mm (1.5 in)
1950	68.1 mm (2.7 in)
1953	39.0 mm (1.5 in)
1954	27.5 mm (1.1 in)
1955	46.0 mm (1.8 in)
1956	49.0 mm (1.9 in)
1957	47.0 mm (1.9 in)
1958	53.0 mm (2.1 in)
1959	60.0 mm (2.4 in)
1960	52.0 mm (2.0 in)
1961	65.0 mm (2.6 in)
1962	40.0 mm (1.6 in)
1963	56.0 mm (2.2 in)
1964	42.1 mm (1.7 in)
1965	47.2 mm (1.9 in)
1966	65.2 mm (2.6 in)
1967	58.0 mm (2.3 in)
1968	73.0 mm (2.9 in)
1969	58.5 mm (2.3 in)
1970	41.5 mm (1.6 in)
1971	40.0 mm (1.6 in)
1972	56.0 mm (2.2 in)
1973	44.5 mm (1.8 in)
1974	64.0 mm (2.5 in)
1975	46.0 mm (1.8 in)
1976	72.0 mm (2.8 in)
1977	55.0 mm (2.2 in)
1978	35.0 mm (1.4 in)
1979	33.5 mm (1.3 in)
1980	39.0 mm (1.5 in)
1981	33.5 mm (1.3 in)
1982	55.0 mm (2.2 in)
1983	65.0 mm (2.6 in)
1984	24.1 mm (0.9 in)
1985	41.0 mm (1.6 in)
1986	50.1 mm (2.0 in)
1987	34.0 mm (1.3 in)
1988	82.0 mm (3.2 in)
1989	50.5 mm (2.0 in)
1990	56.5 mm (2.2 in)
1991	81.5 mm (3.2 in)
1992	28.5 mm (1.1 in)
1993	58.5 mm (2.3 in)
1994	94.0 mm (3.7 in)
1995	29.0 mm (1.1 in)
1996	56.5 mm (2.2 in)
1997	25.0 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Slangfontein, 1923 to 1997. The record is 251.3 mm (9.9 in) in 1988, marked on the chart; the median year is 72.4 mm (2.9 in).

Wettest five days (Rx5day) at Slangfontein by year
Year	Wettest five days (Rx5day)
1923	44.5 mm (1.8 in)
1924	61.8 mm (2.4 in)
1925	70.9 mm (2.8 in)
1926	45.0 mm (1.8 in)
1927	60.4 mm (2.4 in)
1928	51.3 mm (2.0 in)
1929	51.6 mm (2.0 in)
1930	83.1 mm (3.3 in)
1931	109.7 mm (4.3 in)
1932	72.4 mm (2.9 in)
1933	59.2 mm (2.3 in)
1934	85.1 mm (3.4 in)
1935	58.4 mm (2.3 in)
1936	86.1 mm (3.4 in)
1937	83.8 mm (3.3 in)
1938	99.1 mm (3.9 in)
1939	80.0 mm (3.1 in)
1940	100.6 mm (4.0 in)
1941	83.6 mm (3.3 in)
1942	58.3 mm (2.3 in)
1943	92.3 mm (3.6 in)
1944	74.2 mm (2.9 in)
1945	50.8 mm (2.0 in)
1946	77.7 mm (3.1 in)
1947	41.5 mm (1.6 in)
1948	107.2 mm (4.2 in)
1949	43.5 mm (1.7 in)
1950	97.9 mm (3.9 in)
1953	58.9 mm (2.3 in)
1954	64.0 mm (2.5 in)
1955	118.0 mm (4.6 in)
1956	55.0 mm (2.2 in)
1957	106.0 mm (4.2 in)
1958	68.0 mm (2.7 in)
1959	78.5 mm (3.1 in)
1960	52.0 mm (2.0 in)
1961	79.0 mm (3.1 in)
1962	77.8 mm (3.1 in)
1963	101.1 mm (4.0 in)
1964	60.3 mm (2.4 in)
1965	67.3 mm (2.6 in)
1966	108.4 mm (4.3 in)
1967	76.2 mm (3.0 in)
1968	91.5 mm (3.6 in)
1969	108.5 mm (4.3 in)
1970	48.0 mm (1.9 in)
1971	50.5 mm (2.0 in)
1972	142.5 mm (5.6 in)
1973	54.5 mm (2.1 in)
1974	190.0 mm (7.5 in)
1975	76.0 mm (3.0 in)
1976	104.0 mm (4.1 in)
1977	60.0 mm (2.4 in)
1978	48.9 mm (1.9 in)
1979	67.5 mm (2.7 in)
1980	61.0 mm (2.4 in)
1981	59.5 mm (2.3 in)
1982	70.8 mm (2.8 in)
1983	103.2 mm (4.1 in)
1984	44.7 mm (1.8 in)
1985	75.3 mm (3.0 in)
1986	70.3 mm (2.8 in)
1987	50.3 mm (2.0 in)
1988	251.3 mm (9.9 in)
1989	92.2 mm (3.6 in)
1990	63.0 mm (2.5 in)
1991	155.8 mm (6.1 in)
1992	48.0 mm (1.9 in)
1993	69.0 mm (2.7 in)
1994	166.3 mm (6.5 in)
1995	57.6 mm (2.3 in)
1996	83.0 mm (3.3 in)
1997	83.0 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Slangfontein, 1923 to 1997. The record is 232 days in 1923, marked on the chart; the median year is 76 days.

Longest dry spell (CDD) at Slangfontein by year
Year	Longest dry spell (CDD)
1923	232 days
1924	46 days
1925	36 days
1926	47 days
1927	82 days
1928	102 days
1929	35 days
1930	48 days
1931	68 days
1932	128 days
1933	69 days
1934	133 days
1935	77 days
1936	74 days
1937	112 days
1938	105 days
1939	56 days
1940	51 days
1941	72 days
1942	71 days
1943	47 days
1944	96 days
1945	89 days
1946	67 days
1947	66 days
1948	103 days
1949	61 days
1950	75 days
1953	91 days
1954	176 days
1955	88 days
1956	116 days
1957	70 days
1958	111 days
1959	91 days
1960	53 days
1961	64 days
1962	128 days
1963	89 days
1964	80 days
1965	83 days
1966	130 days
1967	78 days
1968	105 days
1969	103 days
1970	50 days
1971	135 days
1972	140 days
1973	67 days
1974	75 days
1975	68 days
1976	62 days
1977	77 days
1978	130 days
1979	56 days
1980	98 days
1981	76 days
1982	41 days
1983	46 days
1984	49 days
1985	173 days
1986	69 days
1987	51 days
1988	60 days
1989	55 days
1990	85 days
1991	86 days
1992	93 days
1993	32 days
1994	73 days
1995	136 days
1996	80 days
1997	44 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

71 years, 1923 to 1997

A day with at least 49.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 90.4 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Slangfontein: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.5 mm (1.9 in)
5 years	63.0 mm (2.5 in)
10 years	70.9 mm (2.8 in)
25 years	79.5 mm (3.1 in)
50 years	85.3 mm (3.4 in)
100 years	90.4 mm (3.6 in)	Longer than the 71 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, 71 years of values from 1923 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: 94.0 mm (3.7 in) in 1994; 82.0 mm (3.2 in) in 1988; 81.5 mm (3.2 in) in 1991.

Download the Data

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