Jonkersberg (Bos) Weather Records (SF000284150)

Record envelope, standing records and threshold days for Jonkersberg (Bos) (SF000284150), South Africa, with 79 years of record.

Key Facts for Jonkersberg (Bos)

Jonkersberg (Bos) (SF000284150) is a weather station in South Africa at -33.92 latitude and 22.23 longitude, 457 m (1,499 ft) above sea level.
The station reports from 1919 to 1997, 79 years of record.
0 records set at Jonkersberg (Bos) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Jonkersberg (Bos) set a daily record precipitation of 54.0 mm (2.1 in) on 6 April 1997.

About the Station

Location: South Africa, -33.92 latitude, 22.23 longitude.
Elevation: 457 m (1,499 ft).
Period of record: 1919 to 1997, 79 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 Jonkersberg (Bos). 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 Jonkersberg (Bos), 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 Jonkersberg (Bos) still stand.

Wettest Day of Each Month

Dec: 238.8 mm (9.4 in)

The wettest day on record for each calendar month at Jonkersberg (Bos). The most was 238.8 mm (9.4 in) on 31 December 1931.

Record daily precipitation for each month at Jonkersberg (Bos)
Month	Record daily precipitation (mm)	Date
Jan	184.5 mm (7.3 in)	26 January 1955
Feb	97.3 mm (3.8 in)	27 February 1940
Mar	234.2 mm (9.2 in)	13 March 1939
Apr	92.5 mm (3.6 in)	14 April 1987
May	108.5 mm (4.3 in)	20 May 1954
Jun	62.0 mm (2.4 in)	17 June 1926
Jul	85.9 mm (3.4 in)	24 July 1951
Aug	204.0 mm (8.0 in)	26 August 1954
Sep	114.3 mm (4.5 in)	20 September 1925
Oct	120.0 mm (4.7 in)	20 October 1953
Nov	155.2 mm (6.1 in)	23 November 1928
Dec	238.8 mm (9.4 in)	31 December 1931

Latest Records

Latest records at Jonkersberg (Bos)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 April 1997	Jonkersberg (Bos), ZA	daily rain	54.0 mm (2.1 in)	20.5 mm (0.8 in)	56 years	38 of 100 (Notable)
25 February 1997	Jonkersberg (Bos), ZA	daily rain	58.5 mm (2.3 in)	20.9 mm (0.8 in)	67 years	42 of 100 (Notable)
20 November 1996	Jonkersberg (Bos), ZA	daily rain	108.0 mm (4.3 in)	73.0 mm (2.9 in)	42 years	59 of 100 (Notable)
19 November 1996	Jonkersberg (Bos), ZA	daily rain	40.5 mm (1.6 in)	18.9 mm (0.7 in)	50 years	33 of 100 (Routine)
22 October 1996	Jonkersberg (Bos), ZA	daily rain	71.5 mm (2.8 in)	10.0 mm (0.4 in)	67 years	34 of 100 (Routine)
17 September 1996	Jonkersberg (Bos), ZA	daily rain	90.0 mm (3.5 in)	32.6 mm (1.3 in)	64 years	49 of 100 (Notable)
8 April 1996	Jonkersberg (Bos), ZA	daily rain	45.0 mm (1.8 in)	3.0 mm (0.12 in)	29 years	17 of 100 (Routine)
29 November 1995	Jonkersberg (Bos), ZA	daily rain	99.0 mm (3.9 in)	67.0 mm (2.6 in)	4 years	48 of 100 (Notable)
28 November 1995	Jonkersberg (Bos), ZA	daily rain	63.5 mm (2.5 in)	31.0 mm (1.2 in)	40 years	38 of 100 (Notable)
21 May 1995	Jonkersberg (Bos), ZA	daily rain	32.0 mm (1.3 in)	1.3 mm (0.05 in)	49 years	21 of 100 (Routine)
7 May 1995	Jonkersberg (Bos), ZA	daily rain	29.5 mm (1.2 in)	2.5 mm (0.10 in)	17 years	13 of 100 (Routine)
19 April 1995	Jonkersberg (Bos), ZA	daily rain	87.0 mm (3.4 in)	55.5 mm (2.2 in)	28 years	55 of 100 (Notable)
9 April 1995	Jonkersberg (Bos), ZA	daily rain	43.5 mm (1.7 in)	2.3 mm (0.09 in)	28 years	16 of 100 (Routine)
19 March 1995	Jonkersberg (Bos), ZA	daily rain	40.0 mm (1.6 in)	4.7 mm (0.19 in)	61 years	27 of 100 (Routine)
18 January 1995	Jonkersberg (Bos), ZA	daily rain	35.1 mm (1.4 in)	8.4 mm (0.33 in)	64 years	31 of 100 (Routine)
17 January 1995	Jonkersberg (Bos), ZA	daily rain	45.5 mm (1.8 in)	14.5 mm (0.6 in)	68 years	36 of 100 (Notable)
23 December 1994	Jonkersberg (Bos), ZA	daily rain	136.5 mm (5.4 in)	101.7 mm (4.0 in)	12 years	50 of 100 (Notable)
11 December 1994	Jonkersberg (Bos), ZA	daily rain	37.5 mm (1.5 in)	2.5 mm (0.10 in)	7 years	10 of 100 (Routine)
2 August 1994	Jonkersberg (Bos), ZA	daily rain	56.0 mm (2.2 in)	43.0 mm (1.7 in)	63 years	51 of 100 (Notable)
24 April 1994	Jonkersberg (Bos), ZA	daily rain	23.0 mm (0.9 in)	4.5 mm (0.18 in)	40 years	20 of 100 (Routine)

Extremes by Year

1919 to 1997

Yearly extremes at Jonkersberg (Bos): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	238.8 mm (9.4 in)	1931	76.2 mm (3.0 in)	79
Wettest five days (Rx5day)	551.2 mm (21.7 in)	1932	120.0 mm (4.7 in)	79
Longest dry spell (CDD)	34 days	1987	18 days	79

Wettest day (Rx1day)

The wettest day of the year at Jonkersberg (Bos), 1919 to 1997. The record is 238.8 mm (9.4 in) in 1931, marked on the chart; the median year is 76.2 mm (3.0 in).

Wettest day (Rx1day) at Jonkersberg (Bos) by year
Year	Wettest day (Rx1day)
1919	11.2 mm (0.4 in)
1920	56.4 mm (2.2 in)
1921	45.7 mm (1.8 in)
1922	57.7 mm (2.3 in)
1923	47.2 mm (1.9 in)
1924	27.2 mm (1.1 in)
1925	114.3 mm (4.5 in)
1926	62.0 mm (2.4 in)
1927	79.5 mm (3.1 in)
1928	155.2 mm (6.1 in)
1929	76.2 mm (3.0 in)
1930	111.5 mm (4.4 in)
1931	238.8 mm (9.4 in)
1932	76.2 mm (3.0 in)
1933	87.1 mm (3.4 in)
1934	74.2 mm (2.9 in)
1935	94.0 mm (3.7 in)
1936	85.3 mm (3.4 in)
1937	63.8 mm (2.5 in)
1938	51.1 mm (2.0 in)
1939	234.2 mm (9.2 in)
1940	97.3 mm (3.8 in)
1941	82.3 mm (3.2 in)
1942	48.8 mm (1.9 in)
1943	80.3 mm (3.2 in)
1944	64.8 mm (2.6 in)
1945	89.4 mm (3.5 in)
1946	72.4 mm (2.9 in)
1947	98.8 mm (3.9 in)
1948	96.0 mm (3.8 in)
1949	65.0 mm (2.6 in)
1950	115.6 mm (4.6 in)
1951	151.1 mm (5.9 in)
1952	83.3 mm (3.3 in)
1953	120.0 mm (4.7 in)
1954	204.0 mm (8.0 in)
1955	184.5 mm (7.3 in)
1956	61.5 mm (2.4 in)
1957	76.5 mm (3.0 in)
1958	57.8 mm (2.3 in)
1959	82.0 mm (3.2 in)
1960	65.5 mm (2.6 in)
1961	73.0 mm (2.9 in)
1962	141.0 mm (5.6 in)
1963	102.0 mm (4.0 in)
1964	108.5 mm (4.3 in)
1965	91.0 mm (3.6 in)
1966	46.0 mm (1.8 in)
1967	79.5 mm (3.1 in)
1968	40.8 mm (1.6 in)
1969	60.0 mm (2.4 in)
1970	75.5 mm (3.0 in)
1971	57.2 mm (2.3 in)
1972	60.8 mm (2.4 in)
1973	41.4 mm (1.6 in)
1974	45.5 mm (1.8 in)
1975	61.2 mm (2.4 in)
1976	33.5 mm (1.3 in)
1977	73.0 mm (2.9 in)
1978	72.0 mm (2.8 in)
1979	61.5 mm (2.4 in)
1980	76.5 mm (3.0 in)
1981	112.0 mm (4.4 in)
1982	49.3 mm (1.9 in)
1983	83.1 mm (3.3 in)
1984	52.8 mm (2.1 in)
1985	56.9 mm (2.2 in)
1986	65.0 mm (2.6 in)
1987	92.5 mm (3.6 in)
1988	47.0 mm (1.9 in)
1989	67.5 mm (2.7 in)
1990	72.5 mm (2.9 in)
1991	102.0 mm (4.0 in)
1992	90.0 mm (3.5 in)
1993	103.0 mm (4.1 in)
1994	136.5 mm (5.4 in)
1995	99.0 mm (3.9 in)
1996	108.0 mm (4.3 in)
1997	58.5 mm (2.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Jonkersberg (Bos), 1919 to 1997. The record is 551.2 mm (21.7 in) in 1932, marked on the chart; the median year is 120.0 mm (4.7 in).

Wettest five days (Rx5day) at Jonkersberg (Bos) by year
Year	Wettest five days (Rx5day)
1919	23.6 mm (0.9 in)
1920	129.2 mm (5.1 in)
1921	91.9 mm (3.6 in)
1922	156.5 mm (6.2 in)
1923	50.6 mm (2.0 in)
1924	48.0 mm (1.9 in)
1925	251.1 mm (9.9 in)
1926	95.5 mm (3.8 in)
1927	110.3 mm (4.3 in)
1928	283.2 mm (11.1 in)
1929	178.8 mm (7.0 in)
1930	178.8 mm (7.0 in)
1931	484.4 mm (19.1 in)
1932	551.2 mm (21.7 in)
1933	179.8 mm (7.1 in)
1934	130.1 mm (5.1 in)
1935	158.2 mm (6.2 in)
1936	130.3 mm (5.1 in)
1937	81.3 mm (3.2 in)
1938	64.2 mm (2.5 in)
1939	241.3 mm (9.5 in)
1940	158.8 mm (6.3 in)
1941	166.1 mm (6.5 in)
1942	113.5 mm (4.5 in)
1943	154.3 mm (6.1 in)
1944	95.0 mm (3.7 in)
1945	117.8 mm (4.6 in)
1946	124.5 mm (4.9 in)
1947	114.1 mm (4.5 in)
1948	114.0 mm (4.5 in)
1949	175.2 mm (6.9 in)
1950	155.0 mm (6.1 in)
1951	151.1 mm (5.9 in)
1952	139.2 mm (5.5 in)
1953	239.8 mm (9.4 in)
1954	390.0 mm (15.4 in)
1955	190.5 mm (7.5 in)
1956	81.5 mm (3.2 in)
1957	120.5 mm (4.7 in)
1958	129.3 mm (5.1 in)
1959	107.0 mm (4.2 in)
1960	120.1 mm (4.7 in)
1961	83.8 mm (3.3 in)
1962	216.0 mm (8.5 in)
1963	198.5 mm (7.8 in)
1964	203.5 mm (8.0 in)
1965	205.8 mm (8.1 in)
1966	63.0 mm (2.5 in)
1967	119.5 mm (4.7 in)
1968	79.3 mm (3.1 in)
1969	67.7 mm (2.7 in)
1970	93.0 mm (3.7 in)
1971	109.6 mm (4.3 in)
1972	109.3 mm (4.3 in)
1973	46.0 mm (1.8 in)
1974	56.5 mm (2.2 in)
1975	81.0 mm (3.2 in)
1976	59.5 mm (2.3 in)
1977	219.0 mm (8.6 in)
1978	89.5 mm (3.5 in)
1979	93.5 mm (3.7 in)
1980	93.0 mm (3.7 in)
1981	161.0 mm (6.3 in)
1982	90.3 mm (3.6 in)
1983	108.9 mm (4.3 in)
1984	81.0 mm (3.2 in)
1985	102.3 mm (4.0 in)
1986	118.5 mm (4.7 in)
1987	95.0 mm (3.7 in)
1988	53.0 mm (2.1 in)
1989	127.5 mm (5.0 in)
1990	83.5 mm (3.3 in)
1991	134.3 mm (5.3 in)
1992	120.0 mm (4.7 in)
1993	161.5 mm (6.4 in)
1994	153.5 mm (6.0 in)
1995	168.5 mm (6.6 in)
1996	197.5 mm (7.8 in)
1997	76.2 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Jonkersberg (Bos), 1919 to 1997. The record is 34 days in 1987, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Jonkersberg (Bos) by year
Year	Longest dry spell (CDD)
1919	7 days
1920	19 days
1921	15 days
1922	18 days
1923	17 days
1924	32 days
1925	21 days
1926	19 days
1927	17 days
1928	15 days
1929	19 days
1930	17 days
1931	15 days
1932	15 days
1933	25 days
1934	20 days
1935	14 days
1936	17 days
1937	18 days
1938	14 days
1939	25 days
1940	23 days
1941	24 days
1942	10 days
1943	15 days
1944	14 days
1945	19 days
1946	21 days
1947	22 days
1948	12 days
1949	20 days
1950	17 days
1951	12 days
1952	11 days
1953	16 days
1954	19 days
1955	17 days
1956	19 days
1957	12 days
1958	29 days
1959	14 days
1960	21 days
1961	17 days
1962	19 days
1963	19 days
1964	30 days
1965	26 days
1966	25 days
1967	27 days
1968	18 days
1969	20 days
1970	21 days
1971	17 days
1972	18 days
1973	17 days
1974	29 days
1975	13 days
1976	14 days
1977	17 days
1978	21 days
1979	23 days
1980	26 days
1981	19 days
1982	24 days
1983	19 days
1984	32 days
1985	33 days
1986	23 days
1987	34 days
1988	11 days
1989	13 days
1990	17 days
1991	17 days
1992	14 days
1993	17 days
1994	25 days
1995	13 days
1996	27 days
1997	14 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

78 years, 1920 to 1997

A day with at least 74.9 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 240.3 mm (9.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Jonkersberg (Bos): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	74.9 mm (2.9 in)
5 years	107.0 mm (4.2 in)
10 years	132.4 mm (5.2 in)
25 years	170.2 mm (6.7 in)
50 years	203.0 mm (8.0 in)
100 years	240.3 mm (9.5 in)	Longer than the 78 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, 78 years of values from 1920 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: 238.8 mm (9.4 in) in 1931; 234.2 mm (9.2 in) in 1939; 204.0 mm (8.0 in) in 1954.

Download the Data

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