Jansenville Weather Records (SF000742960)

Record envelope, standing records and threshold days for Jansenville (SF000742960), South Africa, with 112 years of record.

Key Facts for Jansenville

Jansenville (SF000742960) is a weather station in South Africa at -32.93 latitude and 24.67 longitude, 424 m (1,391 ft) above sea level.
The station reports from 1878 to 1989, 112 years of record.
178 records set at Jansenville still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Jansenville set a daily record precipitation of 7.5 mm (0.30 in) on 2 September 1979.

About the Station

Location: South Africa, -32.93 latitude, 24.67 longitude.
Elevation: 424 m (1,391 ft).
Period of record: 1878 to 1989, 112 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 Jansenville. 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 Jansenville, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	41.5 C (106.7 F)	17.0 C (62.6 F)	n/a	n/a
Feb	34.0 C (93.2 F)	10.0 C (50.0 F)	n/a	n/a
Mar	32.5 C (90.5 F)	6.0 C (42.8 F)	n/a	n/a
Apr	36.0 C (96.8 F)	7.5 C (45.5 F)	n/a	n/a
May	n/a	0.9 C (33.6 F)	n/a	n/a
Jun	22.5 C (72.5 F)	4.0 C (39.2 F)	n/a	n/a
Jul	23.8 C (74.8 F)	0.0 C (32.0 F)	n/a	n/a
Aug	30.8 C (87.4 F)	2.0 C (35.6 F)	n/a	n/a
Sep	34.0 C (93.2 F)	1.4 C (34.5 F)	n/a	n/a
Oct	34.5 C (94.1 F)	3.5 C (38.3 F)	n/a	n/a
Nov	34.0 C (93.2 F)	11.0 C (51.8 F)	n/a	n/a
Dec	29.5 C (85.1 F)	17.0 C (62.6 F)	n/a	n/a

Which Years Hold Standing Records

178 standing records

178 records at Jansenville still stand. 1988 holds the most, with 49.

All-Time Record Progression

2 new records

2 all-time records were set at Jansenville between 28 December 1921 and 7 May 1977. Each dot is a new record.

When Jansenville set new all-time records
Date	Kind	Detail
1921-12-28	Record daily precipitation	Record daily precipitation 85.6 mm (3.4 in)
1977-05-07	Record daily precipitation	Record daily precipitation 104.0 mm (4.1 in)

Wettest Day of Each Month

May: 104.0 mm (4.1 in)

The wettest day on record for each calendar month at Jansenville. The most was 104.0 mm (4.1 in) on 7 May 1977.

Record daily precipitation for each month at Jansenville
Month	Record daily precipitation (mm)	Date
Jan	43.7 mm (1.7 in)	29 January 1882
Feb	54.1 mm (2.1 in)	23 February 1925
Mar	57.2 mm (2.3 in)	20 March 1893
Apr	54.5 mm (2.1 in)	18 April 1973
May	104.0 mm (4.1 in)	7 May 1977
Jun	41.9 mm (1.6 in)	7 June 1917
Jul	36.5 mm (1.4 in)	20 July 1979
Aug	77.0 mm (3.0 in)	21 August 1971
Sep	71.6 mm (2.8 in)	13 September 1905
Oct	40.6 mm (1.6 in)	13 October 1906
Nov	54.6 mm (2.1 in)	13 November 1902
Dec	85.6 mm (3.4 in)	28 December 1921

Period of Record Coverage

1982 to 1989

8 years of record at Jansenville, 1982 to 1989. 8 years have data for under 90 percent of days and are left out of rankings: 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989.

Latest Records

Latest records at Jansenville
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 September 1979	Jansenville, ZA	daily rain	7.5 mm (0.30 in)	2.2 mm (0.09 in)	84 years	20 of 100 (Routine)
21 July 1979	Jansenville, ZA	daily rain	11.5 mm (0.5 in)	2.4 mm (0.09 in)	48 years	20 of 100 (Routine)
20 July 1979	Jansenville, ZA	monthly rain	36.5 mm (1.4 in)	3.5 mm (0.14 in)	93 years	53 of 100 (Notable)
23 May 1979	Jansenville, ZA	daily rain	5.3 mm (0.21 in)	0.5 mm (0.02 in)	80 years	20 of 100 (Routine)
22 May 1979	Jansenville, ZA	daily rain	18.0 mm (0.7 in)	10.1 mm (0.4 in)	94 years	20 of 100 (Routine)
13 February 1979	Jansenville, ZA	daily rain	17.5 mm (0.7 in)	2.0 mm (0.08 in)	84 years	20 of 100 (Routine)
9 December 1978	Jansenville, ZA	daily rain	22.7 mm (0.9 in)	3.4 mm (0.13 in)	87 years	20 of 100 (Routine)
1 November 1978	Jansenville, ZA	daily rain	30.3 mm (1.2 in)	17.9 mm (0.7 in)	44 years	45 of 100 (Notable)
11 June 1978	Jansenville, ZA	daily rain	14.0 mm (0.6 in)	10.4 mm (0.4 in)	86 years	20 of 100 (Routine)
19 April 1978	Jansenville, ZA	daily rain	9.0 mm (0.35 in)	4.9 mm (0.19 in)	92 years	20 of 100 (Routine)
30 November 1977	Jansenville, ZA	daily rain	14.0 mm (0.6 in)	6.1 mm (0.24 in)	85 years	20 of 100 (Routine)
15 August 1977	Jansenville, ZA	daily rain	1.0 mm (0.04 in)	1.0 mm (0.04 in)	98 years	20 of 100 (Routine)
8 May 1977	Jansenville, ZA	daily rain	15.0 mm (0.6 in)	6.0 mm (0.24 in)	16 years	20 of 100 (Routine)
7 May 1977	Jansenville, ZA	all-time rain	104.0 mm (4.1 in)	18.4 mm (0.7 in)	55 years	70 of 100 (Major)
13 April 1977	Jansenville, ZA	daily rain	40.0 mm (1.6 in)	14.6 mm (0.6 in)	16 years	33 of 100 (Routine)
20 February 1977	Jansenville, ZA	daily rain	45.0 mm (1.8 in)	32.3 mm (1.3 in)	53 years	64 of 100 (Major)
17 February 1977	Jansenville, ZA	daily rain	25.0 mm (1.0 in)	7.2 mm (0.28 in)	98 years	47 of 100 (Notable)
12 February 1977	Jansenville, ZA	daily rain	24.0 mm (0.9 in)	4.2 mm (0.17 in)	66 years	20 of 100 (Routine)
11 February 1977	Jansenville, ZA	daily rain	36.0 mm (1.4 in)	24.0 mm (0.9 in)	2 years	39 of 100 (Notable)
21 March 1976	Jansenville, ZA	daily rain	14.0 mm (0.6 in)	1.3 mm (0.05 in)	72 years	20 of 100 (Routine)

Extremes by Year

1878 to 1989

Yearly extremes at Jansenville: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.5 C (106.7 F)	1987	33.2 C (91.8 F)	8
Coldest night (TNn)	0.0 C (32.0 F)	1981	3.0 C (37.4 F)	10
Wettest day (Rx1day)	104.0 mm (4.1 in)	1977	33.5 mm (1.3 in)	88
Wettest five days (Rx5day)	165.9 mm (6.5 in)	1921	48.6 mm (1.9 in)	82
Longest dry spell (CDD)	134 days	1919	55 days	85

Hottest day (TXx)

The hottest day of the year at Jansenville, 1878 to 1989. The record is 41.5 C (106.7 F) in 1987, marked on the chart; the median year is 33.2 C (91.8 F).

Hottest day (TXx) at Jansenville by year
Year	Hottest day (TXx)
1878	n/a
1879	n/a
1880	n/a
1881	n/a
1882	n/a
1883	n/a
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	31.2 C (88.2 F)
1983	30.0 C (86.0 F)
1984	33.0 C (91.4 F)
1985	36.0 C (96.8 F)
1986	33.4 C (92.1 F)
1987	41.5 C (106.7 F)
1988	39.0 C (102.2 F)
1989	33.0 C (91.4 F)

Coldest night (TNn)

The coldest night of the year at Jansenville, 1878 to 1989. The record is 0.0 C (32.0 F) in 1981, marked on the chart; the median year is 3.0 C (37.4 F).

Coldest night (TNn) at Jansenville by year
Year	Coldest night (TNn)
1878	n/a
1879	n/a
1880	n/a
1881	n/a
1882	n/a
1883	n/a
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	4.0 C (39.2 F)
1981	0.0 C (32.0 F)
1982	4.9 C (40.8 F)
1983	1.4 C (34.5 F)
1984	3.5 C (38.3 F)
1985	13.0 C (55.4 F)
1986	2.5 C (36.5 F)
1987	5.0 C (41.0 F)
1988	2.0 C (35.6 F)
1989	0.9 C (33.6 F)

Wettest day (Rx1day)

The wettest day of the year at Jansenville, 1878 to 1989. The record is 104.0 mm (4.1 in) in 1977, marked on the chart; the median year is 33.5 mm (1.3 in).

Wettest day (Rx1day) at Jansenville by year
Year	Wettest day (Rx1day)
1878	23.6 mm (0.9 in)
1879	38.4 mm (1.5 in)
1880	27.9 mm (1.1 in)
1881	31.5 mm (1.2 in)
1882	43.7 mm (1.7 in)
1883	22.9 mm (0.9 in)
1884	28.2 mm (1.1 in)
1885	26.4 mm (1.0 in)
1886	42.9 mm (1.7 in)
1887	36.3 mm (1.4 in)
1888	35.3 mm (1.4 in)
1889	34.8 mm (1.4 in)
1890	28.7 mm (1.1 in)
1891	27.9 mm (1.1 in)
1892	38.1 mm (1.5 in)
1893	57.2 mm (2.3 in)
1894	27.4 mm (1.1 in)
1895	29.2 mm (1.1 in)
1896	50.8 mm (2.0 in)
1897	34.3 mm (1.4 in)
1898	21.8 mm (0.9 in)
1899	22.9 mm (0.9 in)
1900	35.6 mm (1.4 in)
1901	42.7 mm (1.7 in)
1902	54.6 mm (2.1 in)
1903	24.9 mm (1.0 in)
1904	38.1 mm (1.5 in)
1905	71.6 mm (2.8 in)
1906	40.6 mm (1.6 in)
1907	39.4 mm (1.6 in)
1908	30.5 mm (1.2 in)
1909	24.1 mm (0.9 in)
1910	47.5 mm (1.9 in)
1911	43.2 mm (1.7 in)
1912	38.1 mm (1.5 in)
1913	43.2 mm (1.7 in)
1914	35.8 mm (1.4 in)
1915	11.2 mm (0.4 in)
1916	39.6 mm (1.6 in)
1917	56.1 mm (2.2 in)
1918	25.4 mm (1.0 in)
1919	20.6 mm (0.8 in)
1920	24.6 mm (1.0 in)
1921	85.6 mm (3.4 in)
1922	23.1 mm (0.9 in)
1923	36.6 mm (1.4 in)
1924	42.4 mm (1.7 in)
1925	54.1 mm (2.1 in)
1926	27.4 mm (1.1 in)
1927	19.1 mm (0.8 in)
1928	52.6 mm (2.1 in)
1929	38.1 mm (1.5 in)
1930	29.5 mm (1.2 in)
1931	46.2 mm (1.8 in)
1932	21.8 mm (0.9 in)
1933	50.8 mm (2.0 in)
1934	26.9 mm (1.1 in)
1935	24.9 mm (1.0 in)
1936	48.0 mm (1.9 in)
1937	31.8 mm (1.3 in)
1938	16.0 mm (0.6 in)
1959	20.0 mm (0.8 in)
1960	33.0 mm (1.3 in)
1961	39.0 mm (1.5 in)
1962	34.0 mm (1.3 in)
1963	37.0 mm (1.5 in)
1964	23.0 mm (0.9 in)
1965	31.5 mm (1.2 in)
1966	26.5 mm (1.0 in)
1967	43.5 mm (1.7 in)
1968	44.2 mm (1.7 in)
1969	36.5 mm (1.4 in)
1970	24.5 mm (1.0 in)
1971	77.0 mm (3.0 in)
1972	30.5 mm (1.2 in)
1973	54.5 mm (2.1 in)
1974	52.0 mm (2.0 in)
1975	29.0 mm (1.1 in)
1976	20.0 mm (0.8 in)
1977	104.0 mm (4.1 in)
1978	30.3 mm (1.2 in)
1979	36.5 mm (1.4 in)
1980	0.0 mm (0.00 in)
1981	3.0 mm (0.12 in)
1982	3.0 mm (0.12 in)
1983	n/a
1984	n/a
1985	3.0 mm (0.12 in)
1986	n/a
1987	10.9 mm (0.4 in)
1988	10.4 mm (0.4 in)
1989	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Jansenville, 1878 to 1989. The record is 165.9 mm (6.5 in) in 1921, marked on the chart; the median year is 48.6 mm (1.9 in).

Wettest five days (Rx5day) at Jansenville by year
Year	Wettest five days (Rx5day)
1878	34.5 mm (1.4 in)
1879	77.8 mm (3.1 in)
1880	48.5 mm (1.9 in)
1881	33.6 mm (1.3 in)
1882	44.5 mm (1.8 in)
1883	26.4 mm (1.0 in)
1884	48.7 mm (1.9 in)
1885	48.6 mm (1.9 in)
1886	60.2 mm (2.4 in)
1887	48.2 mm (1.9 in)
1888	45.7 mm (1.8 in)
1889	83.8 mm (3.3 in)
1890	33.1 mm (1.3 in)
1891	58.9 mm (2.3 in)
1892	47.2 mm (1.9 in)
1893	80.3 mm (3.2 in)
1894	73.9 mm (2.9 in)
1895	29.2 mm (1.1 in)
1896	83.8 mm (3.3 in)
1897	34.3 mm (1.4 in)
1898	30.3 mm (1.2 in)
1899	28.5 mm (1.1 in)
1900	63.5 mm (2.5 in)
1901	69.2 mm (2.7 in)
1902	54.6 mm (2.1 in)
1903	54.6 mm (2.1 in)
1904	60.4 mm (2.4 in)
1905	141.0 mm (5.6 in)
1906	53.6 mm (2.1 in)
1907	52.1 mm (2.1 in)
1908	33.5 mm (1.3 in)
1909	35.8 mm (1.4 in)
1910	73.7 mm (2.9 in)
1911	56.4 mm (2.2 in)
1912	43.0 mm (1.7 in)
1913	57.7 mm (2.3 in)
1914	55.6 mm (2.2 in)
1915	12.7 mm (0.5 in)
1916	64.5 mm (2.5 in)
1917	96.8 mm (3.8 in)
1918	36.8 mm (1.4 in)
1919	30.2 mm (1.2 in)
1920	32.6 mm (1.3 in)
1921	165.9 mm (6.5 in)
1922	89.2 mm (3.5 in)
1923	38.9 mm (1.5 in)
1924	48.2 mm (1.9 in)
1925	54.1 mm (2.1 in)
1926	27.9 mm (1.1 in)
1927	19.1 mm (0.8 in)
1928	120.7 mm (4.8 in)
1929	69.9 mm (2.8 in)
1930	35.1 mm (1.4 in)
1931	94.7 mm (3.7 in)
1932	114.5 mm (4.5 in)
1933	57.3 mm (2.3 in)
1934	39.8 mm (1.6 in)
1935	43.7 mm (1.7 in)
1936	71.4 mm (2.8 in)
1937	33.1 mm (1.3 in)
1938	17.8 mm (0.7 in)
1959	43.5 mm (1.7 in)
1960	34.0 mm (1.3 in)
1961	61.5 mm (2.4 in)
1962	39.5 mm (1.6 in)
1963	48.6 mm (1.9 in)
1964	40.9 mm (1.6 in)
1965	47.4 mm (1.9 in)
1966	26.5 mm (1.0 in)
1967	48.6 mm (1.9 in)
1968	44.2 mm (1.7 in)
1969	52.5 mm (2.1 in)
1970	40.5 mm (1.6 in)
1971	131.0 mm (5.2 in)
1972	36.0 mm (1.4 in)
1973	56.7 mm (2.2 in)
1974	69.0 mm (2.7 in)
1975	38.0 mm (1.5 in)
1976	55.0 mm (2.2 in)
1977	132.0 mm (5.2 in)
1978	41.8 mm (1.6 in)
1979	67.2 mm (2.6 in)
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Jansenville, 1878 to 1989. The record is 134 days in 1919, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at Jansenville by year
Year	Longest dry spell (CDD)
1878	54 days
1879	72 days
1880	74 days
1881	56 days
1882	41 days
1883	55 days
1884	83 days
1885	116 days
1886	36 days
1887	39 days
1888	61 days
1889	110 days
1890	83 days
1891	24 days
1892	47 days
1893	27 days
1894	64 days
1895	56 days
1896	51 days
1897	85 days
1898	127 days
1899	48 days
1900	62 days
1901	69 days
1902	57 days
1903	60 days
1904	74 days
1905	76 days
1906	124 days
1907	88 days
1908	45 days
1909	56 days
1910	46 days
1911	55 days
1912	66 days
1913	54 days
1914	51 days
1915	73 days
1916	61 days
1917	39 days
1918	66 days
1919	134 days
1920	59 days
1921	36 days
1922	46 days
1923	57 days
1924	88 days
1925	28 days
1926	59 days
1927	82 days
1928	74 days
1929	41 days
1930	46 days
1931	60 days
1932	59 days
1933	95 days
1934	60 days
1935	48 days
1936	54 days
1937	51 days
1938	19 days
1959	53 days
1960	54 days
1961	50 days
1962	89 days
1963	35 days
1964	45 days
1965	36 days
1966	53 days
1967	41 days
1968	55 days
1969	40 days
1970	61 days
1971	45 days
1972	67 days
1973	39 days
1974	46 days
1975	28 days
1976	39 days
1977	67 days
1978	69 days
1979	44 days
1980	1 day
1981	1 day
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	1 day
1988	n/a
1989	n/a

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

77 years, 1878 to 1978

A day with at least 33.6 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 81.4 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Jansenville: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	33.6 mm (1.3 in)
5 years	45.4 mm (1.8 in)
10 years	53.6 mm (2.1 in)
25 years	64.4 mm (2.5 in)
50 years	72.8 mm (2.9 in)
100 years	81.4 mm (3.2 in)	Longer than the 77 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, 77 years of values from 1878 to 1978.

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: 85.6 mm (3.4 in) in 1921; 77.0 mm (3.0 in) in 1971; 71.6 mm (2.8 in) in 1905.

Download the Data

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