Weather Records on 20 April 1986

770 weather records were set or tied worldwide on 20 April 1986. Highest significance: Palmaryville, ZA.

Key Facts for 20 April 1986

On 20 April 1986, 770 weather records were set or tied at long-record stations worldwide.
232 were record highs and 123 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 27 monthly and 743 daily.
Palmaryville set a daily record precipitation of 120.0 mm (4.7 in) on 20 April 1986.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 460 records.

Record Map

770 stations

770 station records on 20 April 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Palmaryville	South Africa	Record daily precipitation	120.0 mm (4.7 in)	69 of 100 (Major)
Merensky (Skl)	South Africa	Record daily precipitation	156.0 mm (6.1 in)	67 of 100 (Major)
Norrby_S	Sweden	Record daily precipitation	42.9 mm (1.7 in)	61 of 100 (Major)
Gustavus	United States	Record daily precipitation	28.2 mm (1.1 in)	59 of 100 (Notable)
Mac Mac Bos	South Africa	Record daily precipitation	83.0 mm (3.3 in)	56 of 100 (Notable)
Norrveda	Sweden	Record daily precipitation	33.0 mm (1.3 in)	53 of 100 (Notable)
Martinez de la Torre (Dge)	Mexico	Record daily precipitation	98.6 mm (3.9 in)	51 of 100 (Notable)
Elim (Hosp)	South Africa	Record daily precipitation	73.0 mm (2.9 in)	51 of 100 (Notable)
Doornfontein	South Africa	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Ivano-Frankivsk	Ukraine	Record daily precipitation	28.0 mm (1.1 in)	45 of 100 (Notable)
Plain Dealing	United States	Record daily precipitation	79.8 mm (3.1 in)	45 of 100 (Notable)
Etla	Mexico	Record daily precipitation	40.4 mm (1.6 in)	41 of 100 (Notable)
Ribeirao Do Sul	Brazil	Record daily precipitation	51.5 mm (2.0 in)	40 of 100 (Notable)
Witwater (Bos)	South Africa	Record daily precipitation	71.5 mm (2.8 in)	40 of 100 (Notable)
Klein Australie (Bos)	South Africa	Record daily precipitation	82.5 mm (3.2 in)	40 of 100 (Notable)
Matiwa (B0S)	South Africa	Record daily precipitation	116.5 mm (4.6 in)	40 of 100 (Notable)
Salique (Bos)	South Africa	Record daily precipitation	115.5 mm (4.5 in)	39 of 100 (Notable)
Camden 1	United States	Record daily precipitation	41.7 mm (1.6 in)	39 of 100 (Notable)
Versamelhoek	South Africa	Record daily precipitation	78.5 mm (3.1 in)	38 of 100 (Notable)
Gavle	Sweden	Record daily precipitation	28.1 mm (1.1 in)	38 of 100 (Notable)
Koran	United States	Record daily precipitation	76.2 mm (3.0 in)	38 of 100 (Notable)
Vectis, Winterton	South Africa	Record daily precipitation	42.0 mm (1.7 in)	37 of 100 (Notable)
Witklip (Bos)	South Africa	Record daily precipitation	101.0 mm (4.0 in)	37 of 100 (Notable)
Du Quoin 4 SE	United States	Record daily precipitation	48.3 mm (1.9 in)	37 of 100 (Notable)
Porto Ermidao (Faz.Harmonia)	Brazil	Record daily precipitation	76.7 mm (3.0 in)	36 of 100 (Notable)
Zinder	Niger	Record high minimum temperature	30.7 C (87.3 F)	36 of 100 (Notable)
Riverview	South Africa	Record daily precipitation	61.8 mm (2.4 in)	36 of 100 (Notable)
Zwartrandjes	South Africa	Record daily precipitation	40.0 mm (1.6 in)	36 of 100 (Notable)
Todos Santos (Dge)	Mexico	Record high maximum temperature	32.8 C (91.0 F)	35 of 100 (Notable)
Champagne (Naf)	South Africa	Record daily precipitation	53.5 mm (2.1 in)	35 of 100 (Notable)
Pafuri	South Africa	Record daily precipitation	60.5 mm (2.4 in)	35 of 100 (Notable)
Choteau	United States	Record high minimum temperature	8.9 C (48.0 F)	35 of 100 (Notable)
Flores (Dnocs)	Brazil	Record daily precipitation	58.6 mm (2.3 in)	34 of 100 (Routine)
Blyde (Bos)	South Africa	Record daily precipitation	77.0 mm (3.0 in)	34 of 100 (Routine)
Stamps	United States	Record daily precipitation	49.8 mm (2.0 in)	34 of 100 (Routine)
Perryville Wtp	United States	Record daily precipitation	51.3 mm (2.0 in)	34 of 100 (Routine)
Boswell 1 S	United States	Record daily precipitation	87.6 mm (3.4 in)	34 of 100 (Routine)
Graham	United States	Record daily precipitation	38.6 mm (1.5 in)	34 of 100 (Routine)
Cape St. Lucia	South Africa	Record daily precipitation	79.0 mm (3.1 in)	33 of 100 (Routine)
Gingindlovu	South Africa	Record daily precipitation	41.5 mm (1.6 in)	33 of 100 (Routine)
Jefferson	United States	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
Waialua 847	United States	Record high maximum temperature	30.6 C (87.1 F)	33 of 100 (Routine)
Coimbra	Portugal	Record low maximum temperature	13.3 C (55.9 F)	32 of 100 (Routine)
Okay	United States	Record daily precipitation	54.4 mm (2.1 in)	32 of 100 (Routine)
Cotton Valley 5 NNW	United States	Record daily precipitation	73.9 mm (2.9 in)	32 of 100 (Routine)
Joquicingo	Mexico	Record low maximum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Watsonville Wtr Wks	United States	Record high maximum temperature	28.3 C (82.9 F)	31 of 100 (Routine)
Converse	United States	Record daily precipitation	83.8 mm (3.3 in)	31 of 100 (Routine)
Antelope	United States	Record daily precipitation	54.9 mm (2.2 in)	31 of 100 (Routine)
Ciudad Serdan (Smn)	Mexico	Record low maximum temperature	10.6 C (51.1 F)	30 of 100 (Routine)
Gibson Dam	United States	Record high minimum temperature	6.7 C (44.1 F)	30 of 100 (Routine)
Jewett	United States	Record daily precipitation	45.7 mm (1.8 in)	30 of 100 (Routine)
Seymour 3NW	United States	Record daily precipitation	39.9 mm (1.6 in)	30 of 100 (Routine)
Stratford	United States	Record low maximum temperature	8.9 C (48.0 F)	30 of 100 (Routine)
Dequeen	United States	Record daily precipitation	55.9 mm (2.2 in)	29 of 100 (Routine)
Hosston	United States	Record daily precipitation	65.5 mm (2.6 in)	29 of 100 (Routine)
Waxahachie	United States	Record daily precipitation	60.7 mm (2.4 in)	29 of 100 (Routine)
Una (Agr)	South Africa	Record daily precipitation	44.0 mm (1.7 in)	28 of 100 (Routine)
Tshakhuma	South Africa	Record daily precipitation	74.0 mm (2.9 in)	28 of 100 (Routine)
Monterey	United States	Record high minimum temperature	12.8 C (55.0 F)	28 of 100 (Routine)

Counts by Type and Timescale

770 records

Records set or tied on 20 April 1986 by type: Highest daily maximum 116, Lowest daily maximum 75, Highest daily minimum 116, Lowest daily minimum 48, Heaviest daily rainfall 407, Heaviest daily snowfall 1, Deepest snow cover 7.

Records on 20 April 1986 by type
Record type	Records
Highest daily maximum	116
Lowest daily maximum	75
Highest daily minimum	116
Lowest daily minimum	48
Heaviest daily rainfall	407
Heaviest daily snowfall	1
Deepest snow cover	7

Records on 20 April 1986 by timescale: all-time 0, monthly 27, daily 743.

How Much Records Were Beaten By

664 broken records

Margins by which the 664 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 106.0. Ties are not counted.

Top 20 by Significance

20 April 1986

Top 20 records on 20 April 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1986	Palmaryville, ZA	daily rain	120.0 mm (4.7 in)	106.0 mm (4.2 in)	72 years	69 of 100 (Major)
20 April 1986	Merensky (Skl), ZA	monthly rain	156.0 mm (6.1 in)	73.2 mm (2.9 in)	39 years	67 of 100 (Major)
20 April 1986	Norrby_S, SE	monthly rain	42.9 mm (1.7 in)	16.8 mm (0.7 in)	30 years	61 of 100 (Major)
20 April 1986	Gustavus, US	daily rain	28.2 mm (1.1 in)	19.3 mm (0.8 in)	44 years	59 of 100 (Notable)
20 April 1986	Mac Mac Bos, ZA	daily rain	83.0 mm (3.3 in)	61.0 mm (2.4 in)	32 years	56 of 100 (Notable)
20 April 1986	Norrveda, SE	daily rain	33.0 mm (1.3 in)	21.1 mm (0.8 in)	31 years	53 of 100 (Notable)
20 April 1986	Martinez de la Torre (Dge), MX	daily rain	98.6 mm (3.9 in)	92.0 mm (3.6 in)	29 years	51 of 100 (Notable)
20 April 1986	Elim (Hosp), ZA	daily rain	73.0 mm (2.9 in)	54.5 mm (2.1 in)	12 years	51 of 100 (Notable)
20 April 1986	Doornfontein, ZA	daily rain	30.0 mm (1.2 in)	30.0 mm (1.2 in)	59 years	45 of 100 (Notable)
20 April 1986	Ivano-Frankivsk, UA	daily rain	28.0 mm (1.1 in)	22.4 mm (0.9 in)	4 years	45 of 100 (Notable)
20 April 1986	Plain Dealing, US	daily rain	79.8 mm (3.1 in)	37.6 mm (1.5 in)	59 years	45 of 100 (Notable)
20 April 1986	Etla, MX	daily rain	40.4 mm (1.6 in)	29.5 mm (1.2 in)	7 years	41 of 100 (Notable)
20 April 1986	Ribeirao Do Sul, BR	daily rain	51.5 mm (2.0 in)	36.8 mm (1.4 in)	36 years	40 of 100 (Notable)
20 April 1986	Witwater (Bos), ZA	daily rain	71.5 mm (2.8 in)	38.5 mm (1.5 in)	32 years	40 of 100 (Notable)
20 April 1986	Klein Australie (Bos), ZA	daily rain	82.5 mm (3.2 in)	31.5 mm (1.2 in)	32 years	40 of 100 (Notable)
20 April 1986	Matiwa (B0S), ZA	daily rain	116.5 mm (4.6 in)	59.5 mm (2.3 in)	32 years	40 of 100 (Notable)
20 April 1986	Salique (Bos), ZA	monthly rain	115.5 mm (4.5 in)	22.5 mm (0.9 in)	33 years	39 of 100 (Notable)
20 April 1986	Camden 1, US	daily rain	41.7 mm (1.6 in)	2.8 mm (0.11 in)	93 years	39 of 100 (Notable)
20 April 1986	Versamelhoek, ZA	monthly rain	78.5 mm (3.1 in)	12.5 mm (0.5 in)	33 years	38 of 100 (Notable)
20 April 1986	Gavle, SE	daily rain	28.1 mm (1.1 in)	1.2 mm (0.05 in)	88 years	38 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

1807 to 1986

Records set or tied on this calendar date in each year from 1807 to 1986. 1986 had 770 records.

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

Records on 04-20 in each year
Year	Records
1807	3
1817	1
1838	1
1849	2
1851	1
1852	4
1854	1
1858	1
1860	1
1864	1
1865	3
1868	1
1869	1
1870	1
1872	1
1874	3
1875	4
1876	1
1878	2
1880	2
1881	2
1884	1
1885	1
1886	2
1889	1
1891	2
1892	1
1893	6
1894	8
1895	7
1896	3
1897	6
1898	1
1899	1
1901	8
1902	3
1903	14
1904	31
1905	9
1906	12
1907	18
1908	14
1909	22
1910	25
1911	18
1912	12
1913	19
1914	46
1915	45
1916	19
1917	33
1918	42
1919	17
1920	49
1921	27
1922	40
1923	157
1924	113
1925	169
1926	310
1927	442
1928	212
1929	182
1930	87
1931	255
1932	166
1933	279
1934	384
1935	384
1936	311
1937	427
1938	339
1939	158
1940	519
1941	558
1942	223
1943	670
1944	304
1945	391
1946	395
1947	308
1948	493
1949	477
1950	329
1951	690
1952	552
1953	1,071
1954	377
1955	623
1956	384
1957	730
1958	327
1959	563
1960	472
1961	1,078
1962	487
1963	595
1964	749
1965	724
1966	1,174
1967	864
1968	975
1969	382
1970	948
1971	765
1972	531
1973	982
1974	673
1975	344
1976	661
1977	693
1978	800
1979	495
1980	1,539
1981	706
1982	906
1983	1,844
1984	922
1985	1,140
1986	770
1987	1,447
1988	1,144
1989	1,187
1990	1,495
1991	1,075
1992	1,009
1993	772
1994	756
1995	1,351
1996	970
1997	833
1998	1,490
1999	674
2000	931
2001	752
2002	1,081
2003	758
2004	567
2005	707
2006	859
2007	582
2008	1,110
2009	845
2010	693
2011	1,477
2012	726
2013	1,520
2014	384
2015	702
2016	650
2017	734
2018	1,309
2019	1,019
2020	449
2021	1,215
2022	596
2023	828
2024	673
2025	836
2026	533

Download the Data

Data for records on 1986-04-20: 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 20	605
20 to 40	44
40 to 60	10
60 to 80	3
80 to 100	1
100 to 120	1