Longvale Weather Records (SF000366050)

Record envelope, standing records and threshold days for Longvale (SF000366050), South Africa, with 58 years of record.

Key Facts for Longvale

Longvale (SF000366050) is a weather station in South Africa at -33.57 latitude and 26.33 longitude, 274 m (899 ft) above sea level.
The station reports from 1920 to 1977, 58 years of record.
0 records set at Longvale still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Longvale set a daily record precipitation of 24.0 mm (0.9 in) on 9 August 1977.

About the Station

Location: South Africa, -33.57 latitude, 26.33 longitude.
Elevation: 274 m (899 ft).
Period of record: 1920 to 1977, 58 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 Longvale. 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 Longvale, 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 Longvale still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Longvale between 15 September 1952 and 26 September 1952. Each dot is a new record.

When Longvale set new all-time records
Date	Kind	Detail
1952-09-15	Record daily precipitation	Record daily precipitation 91.4 mm (3.6 in)
1952-09-26	Record daily precipitation	Record daily precipitation 325.4 mm (12.8 in)

Wettest Day of Each Month

Sep: 325.4 mm (12.8 in)

The wettest day on record for each calendar month at Longvale. The most was 325.4 mm (12.8 in) on 26 September 1952.

Record daily precipitation for each month at Longvale
Month	Record daily precipitation (mm)	Date
Jan	70.0 mm (2.8 in)	26 January 1974
Feb	72.0 mm (2.8 in)	20 February 1957
Mar	80.8 mm (3.2 in)	18 March 1971
Apr	87.5 mm (3.4 in)	5 April 1971
May	131.0 mm (5.2 in)	26 May 1967
Jun	79.5 mm (3.1 in)	12 June 1968
Jul	84.1 mm (3.3 in)	7 July 1950
Aug	170.0 mm (6.7 in)	21 August 1971
Sep	325.4 mm (12.8 in)	26 September 1952
Oct	104.0 mm (4.1 in)	22 October 1953
Nov	87.4 mm (3.4 in)	4 November 1922
Dec	62.2 mm (2.4 in)	31 December 1931

Latest Records

Latest records at Longvale
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 August 1977	Longvale, ZA	daily rain	24.0 mm (0.9 in)	1.0 mm (0.04 in)	14 years	9 of 100 (Routine)
22 May 1977	Longvale, ZA	daily rain	20.0 mm (0.8 in)	1.7 mm (0.07 in)	40 years	18 of 100 (Routine)
9 May 1977	Longvale, ZA	daily rain	6.5 mm (0.26 in)	2.2 mm (0.09 in)	35 years	16 of 100 (Routine)
7 May 1977	Longvale, ZA	daily rain	65.3 mm (2.6 in)	40.4 mm (1.6 in)	36 years	43 of 100 (Notable)
6 May 1977	Longvale, ZA	daily rain	23.0 mm (0.9 in)	13.5 mm (0.5 in)	16 years	19 of 100 (Routine)
24 April 1977	Longvale, ZA	daily rain	19.4 mm (0.8 in)	13.0 mm (0.5 in)	52 years	20 of 100 (Routine)
18 February 1977	Longvale, ZA	daily rain	17.5 mm (0.7 in)	7.8 mm (0.31 in)	33 years	20 of 100 (Routine)
13 February 1977	Longvale, ZA	daily rain	36.0 mm (1.4 in)	19.7 mm (0.8 in)	43 years	38 of 100 (Notable)
26 December 1976	Longvale, ZA	daily rain	13.0 mm (0.5 in)	4.6 mm (0.18 in)	37 years	20 of 100 (Routine)
2 November 1976	Longvale, ZA	daily rain	26.0 mm (1.0 in)	10.0 mm (0.4 in)	11 years	16 of 100 (Routine)
11 August 1976	Longvale, ZA	daily rain	12.2 mm (0.5 in)	4.0 mm (0.16 in)	4 years	8 of 100 (Routine)
28 July 1976	Longvale, ZA	daily rain	15.0 mm (0.6 in)	4.1 mm (0.16 in)	30 years	17 of 100 (Routine)
19 June 1976	Longvale, ZA	daily rain	18.4 mm (0.7 in)	10.5 mm (0.4 in)	25 years	20 of 100 (Routine)
30 March 1976	Longvale, ZA	daily rain	17.5 mm (0.7 in)	8.4 mm (0.33 in)	37 years	20 of 100 (Routine)
22 March 1976	Longvale, ZA	daily rain	55.0 mm (2.2 in)	17.4 mm (0.7 in)	30 years	28 of 100 (Routine)
5 February 1976	Longvale, ZA	daily rain	11.7 mm (0.5 in)	0.8 mm (0.03 in)	34 years	15 of 100 (Routine)
11 September 1975	Longvale, ZA	daily rain	23.0 mm (0.9 in)	8.0 mm (0.31 in)	5 years	9 of 100 (Routine)
2 September 1975	Longvale, ZA	daily rain	55.3 mm (2.2 in)	11.8 mm (0.5 in)	6 years	12 of 100 (Routine)
1 September 1975	Longvale, ZA	daily rain	73.0 mm (2.9 in)	1.0 mm (0.04 in)	6 years	7 of 100 (Routine)
31 August 1975	Longvale, ZA	daily rain	40.4 mm (1.6 in)	32.0 mm (1.3 in)	24 years	30 of 100 (Routine)

Extremes by Year

1920 to 1977

Yearly extremes at Longvale: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	325.4 mm (12.8 in)	1952	62.6 mm (2.5 in)	58
Wettest five days (Rx5day)	347.3 mm (13.7 in)	1952	100.0 mm (3.9 in)	58
Longest dry spell (CDD)	63 days	1927	28 days	58

Wettest day (Rx1day)

The wettest day of the year at Longvale, 1920 to 1977. The record is 325.4 mm (12.8 in) in 1952, marked on the chart; the median year is 62.6 mm (2.5 in).

Wettest day (Rx1day) at Longvale by year
Year	Wettest day (Rx1day)
1920	47.2 mm (1.9 in)
1921	61.2 mm (2.4 in)
1922	87.4 mm (3.4 in)
1923	71.1 mm (2.8 in)
1924	35.8 mm (1.4 in)
1925	49.5 mm (1.9 in)
1926	44.5 mm (1.8 in)
1927	32.5 mm (1.3 in)
1928	61.0 mm (2.4 in)
1929	60.7 mm (2.4 in)
1930	36.8 mm (1.4 in)
1931	70.1 mm (2.8 in)
1932	83.3 mm (3.3 in)
1933	73.9 mm (2.9 in)
1934	55.9 mm (2.2 in)
1935	78.5 mm (3.1 in)
1936	32.5 mm (1.3 in)
1937	31.8 mm (1.3 in)
1938	83.1 mm (3.3 in)
1939	54.9 mm (2.2 in)
1940	64.0 mm (2.5 in)
1941	83.8 mm (3.3 in)
1942	41.9 mm (1.6 in)
1943	66.0 mm (2.6 in)
1944	80.0 mm (3.1 in)
1945	47.5 mm (1.9 in)
1946	43.4 mm (1.7 in)
1947	39.1 mm (1.5 in)
1948	49.0 mm (1.9 in)
1949	49.5 mm (1.9 in)
1950	84.1 mm (3.3 in)
1951	44.7 mm (1.8 in)
1952	325.4 mm (12.8 in)
1953	104.0 mm (4.1 in)
1954	76.5 mm (3.0 in)
1955	49.7 mm (2.0 in)
1956	51.5 mm (2.0 in)
1957	72.0 mm (2.8 in)
1958	45.5 mm (1.8 in)
1959	53.0 mm (2.1 in)
1960	23.0 mm (0.9 in)
1961	45.0 mm (1.8 in)
1962	64.5 mm (2.5 in)
1963	67.5 mm (2.7 in)
1964	81.4 mm (3.2 in)
1965	84.0 mm (3.3 in)
1966	105.5 mm (4.2 in)
1967	131.0 mm (5.2 in)
1968	79.5 mm (3.1 in)
1969	39.0 mm (1.5 in)
1970	72.0 mm (2.8 in)
1971	170.0 mm (6.7 in)
1972	65.0 mm (2.6 in)
1973	57.5 mm (2.3 in)
1974	72.5 mm (2.9 in)
1975	73.0 mm (2.9 in)
1976	55.0 mm (2.2 in)
1977	65.3 mm (2.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Longvale, 1920 to 1977. The record is 347.3 mm (13.7 in) in 1952, marked on the chart; the median year is 100.0 mm (3.9 in).

Wettest five days (Rx5day) at Longvale by year
Year	Wettest five days (Rx5day)
1920	47.5 mm (1.9 in)
1921	105.2 mm (4.1 in)
1922	213.7 mm (8.4 in)
1923	75.2 mm (3.0 in)
1924	53.1 mm (2.1 in)
1925	57.1 mm (2.2 in)
1926	57.5 mm (2.3 in)
1927	42.1 mm (1.7 in)
1928	161.9 mm (6.4 in)
1929	114.0 mm (4.5 in)
1930	50.0 mm (2.0 in)
1931	117.9 mm (4.6 in)
1932	211.9 mm (8.3 in)
1933	131.1 mm (5.2 in)
1934	80.1 mm (3.2 in)
1935	187.7 mm (7.4 in)
1936	75.0 mm (3.0 in)
1937	45.8 mm (1.8 in)
1938	100.1 mm (3.9 in)
1939	70.1 mm (2.8 in)
1940	113.0 mm (4.4 in)
1941	156.4 mm (6.2 in)
1942	70.6 mm (2.8 in)
1943	91.4 mm (3.6 in)
1944	110.5 mm (4.4 in)
1945	99.9 mm (3.9 in)
1946	105.4 mm (4.1 in)
1947	76.2 mm (3.0 in)
1948	105.1 mm (4.1 in)
1949	110.4 mm (4.3 in)
1950	98.8 mm (3.9 in)
1951	93.0 mm (3.7 in)
1952	347.3 mm (13.7 in)
1953	161.0 mm (6.3 in)
1954	89.5 mm (3.5 in)
1955	65.7 mm (2.6 in)
1956	117.0 mm (4.6 in)
1957	87.5 mm (3.4 in)
1958	78.0 mm (3.1 in)
1959	89.0 mm (3.5 in)
1960	39.0 mm (1.5 in)
1961	68.2 mm (2.7 in)
1962	100.5 mm (4.0 in)
1963	100.5 mm (4.0 in)
1964	115.9 mm (4.6 in)
1965	103.5 mm (4.1 in)
1966	105.5 mm (4.2 in)
1967	145.5 mm (5.7 in)
1968	126.0 mm (5.0 in)
1969	40.3 mm (1.6 in)
1970	165.5 mm (6.5 in)
1971	211.5 mm (8.3 in)
1972	82.0 mm (3.2 in)
1973	74.0 mm (2.9 in)
1974	141.5 mm (5.6 in)
1975	183.0 mm (7.2 in)
1976	75.2 mm (3.0 in)
1977	94.8 mm (3.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Longvale, 1920 to 1977. The record is 63 days in 1927, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Longvale by year
Year	Longest dry spell (CDD)
1920	21 days
1921	32 days
1922	27 days
1923	28 days
1924	28 days
1925	24 days
1926	41 days
1927	63 days
1928	39 days
1929	22 days
1930	22 days
1931	27 days
1932	27 days
1933	27 days
1934	29 days
1935	20 days
1936	28 days
1937	21 days
1938	18 days
1939	21 days
1940	39 days
1941	42 days
1942	20 days
1943	33 days
1944	30 days
1945	35 days
1946	30 days
1947	29 days
1948	27 days
1949	56 days
1950	41 days
1951	26 days
1952	21 days
1953	27 days
1954	22 days
1955	30 days
1956	31 days
1957	21 days
1958	26 days
1959	24 days
1960	27 days
1961	22 days
1962	33 days
1963	25 days
1964	22 days
1965	37 days
1966	35 days
1967	33 days
1968	32 days
1969	36 days
1970	26 days
1971	25 days
1972	39 days
1973	54 days
1974	40 days
1975	51 days
1976	21 days
1977	33 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

56 years, 1921 to 1976

A day with at least 59.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 216.9 mm (8.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Longvale: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	59.0 mm (2.3 in)
5 years	85.9 mm (3.4 in)
10 years	108.6 mm (4.3 in)
25 years	144.5 mm (5.7 in)
50 years	177.5 mm (7.0 in)
100 years	216.9 mm (8.5 in)	Longer than the 56 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, 56 years of values from 1921 to 1976.

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: 325.4 mm (12.8 in) in 1952; 170.0 mm (6.7 in) in 1971; 131.0 mm (5.2 in) in 1967.

Download the Data

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