Weather Records on 20 May 1966

416 weather records were set or tied worldwide on 20 May 1966. Highest significance: Komga (Pol), ZA.

Key Facts for 20 May 1966

On 20 May 1966, 416 weather records were set or tied at long-record stations worldwide.
89 were record highs and 32 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 406 daily.
Komga (Pol) set a daily record precipitation of 81.0 mm (3.2 in) on 20 May 1966.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 456 records.

Record Map

416 stations

416 station records on 20 May 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Komga (Pol)	South Africa	Record daily precipitation	81.0 mm (3.2 in)	67 of 100 (Major)
Willowvale (Tnk)	South Africa	Record daily precipitation	152.0 mm (6.0 in)	63 of 100 (Major)
Katberg (Bos)	South Africa	Record daily precipitation	50.8 mm (2.0 in)	57 of 100 (Notable)
Isidinge (Bos)	South Africa	Record daily precipitation	62.6 mm (2.5 in)	55 of 100 (Notable)
Nqamakwe (Tnk)	South Africa	Record daily precipitation	46.5 mm (1.8 in)	55 of 100 (Notable)
Kentani (Bos)	South Africa	Record daily precipitation	132.5 mm (5.2 in)	55 of 100 (Notable)
Mqanduli (Tnk)	South Africa	Record daily precipitation	90.0 mm (3.5 in)	55 of 100 (Notable)
Lusikisiki (Tnk)	South Africa	Record daily precipitation	252.5 mm (9.9 in)	53 of 100 (Notable)
Ntsubane (Bos)	South Africa	Record daily precipitation	254.0 mm (10.0 in)	53 of 100 (Notable)
Huajuapan de Leon (Smn)	Mexico	Record daily precipitation	79.8 mm (3.1 in)	52 of 100 (Notable)
Sebeni (Bos)	South Africa	Record daily precipitation	106.0 mm (4.2 in)	52 of 100 (Notable)
Libode (Bos)	South Africa	Record daily precipitation	87.0 mm (3.4 in)	52 of 100 (Notable)
Tabankulu (Bos)	South Africa	Record daily precipitation	111.0 mm (4.4 in)	52 of 100 (Notable)
Brynawe, Paddock	South Africa	Record daily precipitation	113.0 mm (4.4 in)	52 of 100 (Notable)
Chilliwack	Canada	Record daily precipitation	34.3 mm (1.4 in)	51 of 100 (Notable)
Granta	South Africa	Record daily precipitation	56.0 mm (2.2 in)	50 of 100 (Notable)
Butterworth (Tnk)	South Africa	Record daily precipitation	69.5 mm (2.7 in)	50 of 100 (Notable)
Wilo (Bos)	South Africa	Record daily precipitation	124.0 mm (4.9 in)	50 of 100 (Notable)
East London -Signal STN	South Africa	Record daily precipitation	49.0 mm (1.9 in)	49 of 100 (Notable)
Huxley	South Africa	Record daily precipitation	37.0 mm (1.5 in)	49 of 100 (Notable)
Bele (Bos)	South Africa	Record daily precipitation	60.0 mm (2.4 in)	49 of 100 (Notable)
Florence	United States	Record daily precipitation	71.9 mm (2.8 in)	49 of 100 (Notable)
Cerro Cora	Brazil	Record daily precipitation	91.4 mm (3.6 in)	48 of 100 (Notable)
N'Dabakazi (Sar)	South Africa	Record daily precipitation	84.0 mm (3.3 in)	48 of 100 (Notable)
Berlin (Sar)	South Africa	Record daily precipitation	53.5 mm (2.1 in)	47 of 100 (Notable)
Umzonia (Rsv)	South Africa	Record daily precipitation	75.0 mm (3.0 in)	47 of 100 (Notable)
Manubie (Bos)	South Africa	Record daily precipitation	91.0 mm (3.6 in)	47 of 100 (Notable)
Korana "Xorana"	South Africa	Record daily precipitation	104.0 mm (4.1 in)	47 of 100 (Notable)
Nqadu Heights (Bos)	South Africa	Record daily precipitation	66.5 mm (2.6 in)	47 of 100 (Notable)
Flagstaff (Tnk)	South Africa	Record daily precipitation	86.5 mm (3.4 in)	47 of 100 (Notable)
Kei Road (Pol)	South Africa	Record daily precipitation	42.5 mm (1.7 in)	46 of 100 (Notable)
Cape Schanck Lighthouse	Australia	Record daily precipitation	26.7 mm (1.1 in)	45 of 100 (Notable)
Invergwali	South Africa	Record daily precipitation	37.0 mm (1.5 in)	44 of 100 (Notable)
Cegcuana (Bos)	South Africa	Record daily precipitation	64.0 mm (2.5 in)	44 of 100 (Notable)
Mkambati	South Africa	Record daily precipitation	152.5 mm (6.0 in)	44 of 100 (Notable)
Fort Donald (Bos)	South Africa	Record daily precipitation	74.5 mm (2.9 in)	44 of 100 (Notable)
Eureka	South Africa	Record daily precipitation	135.0 mm (5.3 in)	44 of 100 (Notable)
Emgcewe (Bos)	South Africa	Record daily precipitation	56.5 mm (2.2 in)	43 of 100 (Notable)
Portsea	Australia	Record daily precipitation	32.0 mm (1.3 in)	42 of 100 (Notable)
Cultus Lake	Canada	Record daily precipitation	41.9 mm (1.6 in)	42 of 100 (Notable)
Ibeka (Bos)	South Africa	Record daily precipitation	87.5 mm (3.4 in)	42 of 100 (Notable)
E Wareham	United States	Record daily precipitation	39.6 mm (1.6 in)	42 of 100 (Notable)
Kokstad	South Africa	Record daily precipitation	52.0 mm (2.0 in)	40 of 100 (Notable)
Cata (Bos)	South Africa	Record daily precipitation	41.0 mm (1.6 in)	39 of 100 (Notable)
Dontsa	South Africa	Record daily precipitation	48.0 mm (1.9 in)	38 of 100 (Notable)
Tanhurst Est, Umzint	South Africa	Record daily precipitation	63.0 mm (2.5 in)	38 of 100 (Notable)
Kieskamahoek (Pol)	South Africa	Record daily precipitation	34.5 mm (1.4 in)	37 of 100 (Notable)
Kubusie (Bos)	South Africa	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Serra Negra Do Norte	Brazil	Record daily precipitation	80.2 mm (3.2 in)	36 of 100 (Notable)
Hogsback (Bos)	South Africa	Record daily precipitation	52.0 mm (2.0 in)	36 of 100 (Notable)
Cwencwe (Bos)	South Africa	Record daily precipitation	49.5 mm (1.9 in)	36 of 100 (Notable)
Mount Coke (Bos)	South Africa	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Cengcane (Bos)	South Africa	Record daily precipitation	45.0 mm (1.8 in)	36 of 100 (Notable)
Kingston	United States	Record daily precipitation	58.2 mm (2.3 in)	36 of 100 (Notable)
Sao Joao Do Jaguaribe	Brazil	Record daily precipitation	41.8 mm (1.6 in)	35 of 100 (Notable)
Sao Rafael	Brazil	Record daily precipitation	79.2 mm (3.1 in)	35 of 100 (Notable)
Engcobo (Tnk)	South Africa	Record daily precipitation	39.0 mm (1.5 in)	34 of 100 (Routine)
Notinsila (Bos)	South Africa	Record daily precipitation	164.0 mm (6.5 in)	34 of 100 (Routine)
The Meadows	South Africa	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Insikeni (Bos)	South Africa	Record daily precipitation	46.0 mm (1.8 in)	34 of 100 (Routine)

Counts by Type and Timescale

416 records

Records set or tied on 20 May 1966 by type: Highest daily maximum 33, Lowest daily maximum 14, Highest daily minimum 56, Lowest daily minimum 18, Heaviest daily rainfall 291, Heaviest daily snowfall 4.

Records on 20 May 1966 by type
Record type	Records
Highest daily maximum	33
Lowest daily maximum	14
Highest daily minimum	56
Lowest daily minimum	18
Heaviest daily rainfall	291
Heaviest daily snowfall	4
Deepest snow cover	0

Records on 20 May 1966 by timescale: all-time 0, monthly 10, daily 406.

How Much Records Were Beaten By

366 broken records

Margins by which the 366 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 227.8. Ties are not counted.

Top 20 by Significance

20 May 1966

Top 20 records on 20 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1966	Komga (Pol), ZA	daily rain	81.0 mm (3.2 in)	75.9 mm (3.0 in)	65 years	67 of 100 (Major)
20 May 1966	Willowvale (Tnk), ZA	daily rain	152.0 mm (6.0 in)	141.8 mm (5.6 in)	55 years	63 of 100 (Major)
20 May 1966	Katberg (Bos), ZA	daily rain	50.8 mm (2.0 in)	26.2 mm (1.0 in)	78 years	57 of 100 (Notable)
20 May 1966	Isidinge (Bos), ZA	daily rain	62.6 mm (2.5 in)	43.5 mm (1.7 in)	41 years	55 of 100 (Notable)
20 May 1966	Nqamakwe (Tnk), ZA	daily rain	46.5 mm (1.8 in)	41.2 mm (1.6 in)	27 years	55 of 100 (Notable)
20 May 1966	Kentani (Bos), ZA	daily rain	132.5 mm (5.2 in)	116.8 mm (4.6 in)	27 years	55 of 100 (Notable)
20 May 1966	Mqanduli (Tnk), ZA	daily rain	90.0 mm (3.5 in)	81.1 mm (3.2 in)	27 years	55 of 100 (Notable)
20 May 1966	Lusikisiki (Tnk), ZA	daily rain	252.5 mm (9.9 in)	227.1 mm (8.9 in)	27 years	53 of 100 (Notable)
20 May 1966	Ntsubane (Bos), ZA	daily rain	254.0 mm (10.0 in)	227.8 mm (9.0 in)	27 years	53 of 100 (Notable)
20 May 1966	Huajuapan de Leon (Smn), MX	daily rain	79.8 mm (3.1 in)	64.8 mm (2.6 in)	27 years	52 of 100 (Notable)
20 May 1966	Sebeni (Bos), ZA	daily rain	106.0 mm (4.2 in)	85.7 mm (3.4 in)	27 years	52 of 100 (Notable)
20 May 1966	Libode (Bos), ZA	daily rain	87.0 mm (3.4 in)	67.2 mm (2.6 in)	27 years	52 of 100 (Notable)
20 May 1966	Tabankulu (Bos), ZA	daily rain	111.0 mm (4.4 in)	66.8 mm (2.6 in)	27 years	52 of 100 (Notable)
20 May 1966	Brynawe, Paddock, ZA	daily rain	113.0 mm (4.4 in)	83.3 mm (3.3 in)	27 years	52 of 100 (Notable)
20 May 1966	Chilliwack, CA	daily rain	34.3 mm (1.4 in)	14.0 mm (0.6 in)	86 years	51 of 100 (Notable)
20 May 1966	Granta, ZA	daily rain	56.0 mm (2.2 in)	49.1 mm (1.9 in)	32 years	50 of 100 (Notable)
20 May 1966	Butterworth (Tnk), ZA	daily rain	69.5 mm (2.7 in)	65.0 mm (2.6 in)	12 years	50 of 100 (Notable)
20 May 1966	Wilo (Bos), ZA	daily rain	124.0 mm (4.9 in)	110.8 mm (4.4 in)	20 years	50 of 100 (Notable)
20 May 1966	East London -Signal STN, ZA	daily rain	49.0 mm (1.9 in)	41.4 mm (1.6 in)	44 years	49 of 100 (Notable)
20 May 1966	Huxley, ZA	daily rain	37.0 mm (1.5 in)	24.0 mm (0.9 in)	59 years	49 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1802 to 1966

Records set or tied on this calendar date in each year from 1802 to 1966. 1966 had 416 records.

Counts for years before the ledger starts come from the same station rules.

Records on 05-20 in each year
Year	Records
1802	1
1803	1
1804	1
1815	1
1825	1
1837	1
1844	1
1845	3
1847	1
1854	1
1858	3
1861	1
1862	1
1865	1
1867	1
1868	2
1870	3
1871	2
1876	2
1877	3
1879	1
1880	2
1884	2
1885	1
1887	2
1889	3
1890	3
1891	5
1892	3
1893	1
1894	6
1895	3
1896	3
1897	3
1898	4
1899	4
1900	1
1901	5
1902	11
1903	19
1904	4
1905	4
1906	22
1907	35
1908	23
1909	10
1910	20
1911	82
1912	20
1913	10
1914	16
1915	42
1916	29
1917	46
1918	92
1919	56
1920	44
1921	234
1922	40
1923	125
1924	189
1925	251
1926	128
1927	118
1928	138
1929	323
1930	129
1931	451
1932	689
1933	449
1934	582
1935	259
1936	207
1937	270
1938	331
1939	266
1940	337
1941	378
1942	337
1943	802
1944	315
1945	498
1946	339
1947	358
1948	514
1949	586
1950	327
1951	288
1952	615
1953	518
1954	822
1955	421
1956	565
1957	728
1958	378
1959	785
1960	612
1961	333
1962	773
1963	732
1964	517
1965	200
1966	416
1967	587
1968	743
1969	885
1970	310
1971	653
1972	612
1973	419
1974	893
1975	1,332
1976	837
1977	553
1978	534
1979	683
1980	751
1981	1,540
1982	554
1983	1,307
1984	867
1985	426
1986	790
1987	1,036
1988	805
1989	764
1990	722
1991	925
1992	1,200
1993	1,208
1994	778
1995	734
1996	1,749
1997	1,106
1998	1,124
1999	673
2000	991
2001	847
2002	2,299
2003	1,201
2004	746
2005	929
2006	1,006
2007	565
2008	999
2009	1,529
2010	1,011
2011	1,117
2012	604
2013	919
2014	629
2015	1,001
2016	692
2017	1,214
2018	460
2019	1,483
2020	784
2021	904
2022	1,643
2023	1,106
2024	478
2025	969
2026	696

Download the Data

Data for records on 1966-05-20: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	340
50 to 100	20
100 to 150	4
150 to 200	0
200 to 250	2