Weather Records on 21 April 1986

977 weather records were set or tied worldwide on 21 April 1986. Highest significance: Bogoroditskoye-Fenino, RU.

Key Facts for 21 April 1986

On 21 April 1986, 977 weather records were set or tied at long-record stations worldwide.
325 were record highs and 208 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 24 monthly and 952 daily.
Bogoroditskoye-Fenino set a daily record precipitation of 37.4 mm (1.5 in) on 21 April 1986.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

977 stations

977 station records on 21 April 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bogoroditskoye-Fenino	Russia	Record daily precipitation	37.4 mm (1.5 in)	76 of 100 (Major)
Trier	Germany	Record daily precipitation	26.1 mm (1.0 in)	61 of 100 (Major)
Broederstroom (Bos)	South Africa	Record daily precipitation	103.5 mm (4.1 in)	59 of 100 (Notable)
Entabeni (Bos)	South Africa	Record daily precipitation	79.0 mm (3.1 in)	59 of 100 (Notable)
Martinsville 2 SW	United States	Record daily precipitation	63.5 mm (2.5 in)	58 of 100 (Notable)
Trier-Petrisberg	Germany	Record daily precipitation	26.6 mm (1.0 in)	51 of 100 (Notable)
Sumidouro-Usina Sao Jorge	Brazil	Record daily precipitation	57.1 mm (2.2 in)	50 of 100 (Notable)
Trier-Zewen	Germany	Record daily precipitation	26.1 mm (1.0 in)	50 of 100 (Notable)
Matiwa (B0S)	South Africa	Record daily precipitation	104.5 mm (4.1 in)	49 of 100 (Notable)
Fazenda Marcondinha	Brazil	Record daily precipitation	71.4 mm (2.8 in)	47 of 100 (Notable)
Coronel Macedo	Brazil	Record daily precipitation	41.8 mm (1.6 in)	47 of 100 (Notable)
Svatove	Ukraine	Record daily precipitation	26.7 mm (1.1 in)	46 of 100 (Notable)
Tomazina	Brazil	Record daily precipitation	62.0 mm (2.4 in)	45 of 100 (Notable)
Ibirarema	Brazil	Record daily precipitation	58.3 mm (2.3 in)	44 of 100 (Notable)
Usina Pari	Brazil	Record daily precipitation	76.9 mm (3.0 in)	44 of 100 (Notable)
Norwalk Wwtp	United States	Record daily precipitation	45.0 mm (1.8 in)	44 of 100 (Notable)
Kasane	Botswana	Record daily precipitation	41.0 mm (1.6 in)	42 of 100 (Notable)
Alcozauca (Smn)	Mexico	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Debaltseve	Ukraine	Record daily precipitation	25.8 mm (1.0 in)	42 of 100 (Notable)
Chokpak	Kazakhstan	Record daily precipitation	48.4 mm (1.9 in)	41 of 100 (Notable)
Polson	United States	Record high minimum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Adin Rs	United States	Record high maximum temperature	25.6 C (78.1 F)	40 of 100 (Notable)
Porto Jau	Brazil	Record daily precipitation	66.3 mm (2.6 in)	39 of 100 (Notable)
Winnemucca AP	United States	Record high maximum temperature	28.3 C (82.9 F)	39 of 100 (Notable)
Bosbokrand (Pol)	South Africa	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Chaplyne	Ukraine	Record daily precipitation	26.6 mm (1.0 in)	38 of 100 (Notable)
Melitopol	Ukraine	Record daily precipitation	42.0 mm (1.7 in)	38 of 100 (Notable)
Masvingo	Zimbabwe	Record daily precipitation	30.3 mm (1.2 in)	38 of 100 (Notable)
Maasbult	South Africa	Record daily precipitation	37.5 mm (1.5 in)	37 of 100 (Notable)
Wamsutter	United States	Record high minimum temperature	5.6 C (42.1 F)	37 of 100 (Notable)
Porto Santa Terezinha An/Cesp	Brazil	Record daily precipitation	95.1 mm (3.7 in)	36 of 100 (Notable)
Ivaipora	Brazil	Record daily precipitation	63.3 mm (2.5 in)	36 of 100 (Notable)
Zuara	Libya	Record low minimum temperature	1.1 C (34.0 F)	36 of 100 (Notable)
Paso de San Antonio	Mexico	Record daily precipitation	169.9 mm (6.7 in)	36 of 100 (Notable)
Sibasa	South Africa	Record daily precipitation	58.1 mm (2.3 in)	36 of 100 (Notable)
Tak	Thailand	Record daily precipitation	64.0 mm (2.5 in)	36 of 100 (Notable)
Diversion Dam	United States	Record high minimum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Waialua 847	United States	Record high maximum temperature	30.6 C (87.1 F)	36 of 100 (Notable)
Burno-Oktyabrsk	Kazakhstan	Record daily precipitation	64.9 mm (2.6 in)	35 of 100 (Notable)
Durant	United States	Record daily precipitation	106.2 mm (4.2 in)	35 of 100 (Notable)
Kaycee	United States	Record high minimum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Itaporanga	Brazil	Record daily precipitation	37.8 mm (1.5 in)	34 of 100 (Routine)
Kljuchi	Russia	Record high maximum temperature	11.9 C (53.4 F)	34 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record low maximum temperature	-2.6 C (27.3 F)	34 of 100 (Routine)
Riggins	United States	Record high maximum temperature	31.7 C (89.1 F)	34 of 100 (Routine)
Saint Johns	United States	Record low maximum temperature	6.7 C (44.1 F)	34 of 100 (Routine)
Chipinge	Zimbabwe	Record daily precipitation	47.4 mm (1.9 in)	34 of 100 (Routine)
Olaria Dos Padres Aneel/Cesp	Brazil	Record daily precipitation	42.6 mm (1.7 in)	33 of 100 (Routine)
Livny	Russia	Record daily precipitation	28.6 mm (1.1 in)	33 of 100 (Routine)
Zomerkomst (Bos)	South Africa	Record daily precipitation	36.5 mm (1.4 in)	33 of 100 (Routine)
Tshakhuma	South Africa	Record daily precipitation	29.0 mm (1.1 in)	33 of 100 (Routine)
Rugby	United States	Record low minimum temperature	-6.7 C (19.9 F)	33 of 100 (Routine)
Van Wert 1 S	United States	Record daily precipitation	29.7 mm (1.2 in)	33 of 100 (Routine)
Beulah	United States	Record high maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Chappells 2 NNW	United States	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Aneth Plt	United States	Record low minimum temperature	-2.2 C (28.0 F)	33 of 100 (Routine)
Republic	United States	Record high minimum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Francistown	Botswana	Record daily precipitation	26.4 mm (1.0 in)	32 of 100 (Routine)
Petaluma AP	United States	Record high maximum temperature	29.4 C (84.9 F)	32 of 100 (Routine)
Kremmling	United States	Record high minimum temperature	2.2 C (36.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

977 records

Records set or tied on 21 April 1986 by type: Highest daily maximum 175, Lowest daily maximum 144, Highest daily minimum 150, Lowest daily minimum 64, Heaviest daily rainfall 429, Heaviest daily snowfall 10, Deepest snow cover 5.

Records on 21 April 1986 by type
Record type	Records
Highest daily maximum	175
Lowest daily maximum	144
Highest daily minimum	150
Lowest daily minimum	64
Heaviest daily rainfall	429
Heaviest daily snowfall	10
Deepest snow cover	5

Records on 21 April 1986 by timescale: all-time 1, monthly 24, daily 952.

How Much Records Were Beaten By

822 broken records

Margins by which the 822 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 129.0. Ties are not counted.

Top 20 by Significance

21 April 1986

Top 20 records on 21 April 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1986	Bogoroditskoye-Fenino, RU	daily rain	37.4 mm (1.5 in)	21.7 mm (0.9 in)	91 years	76 of 100 (Major)
21 April 1986	Trier, DE	daily rain	26.1 mm (1.0 in)	15.6 mm (0.6 in)	60 years	61 of 100 (Major)
21 April 1986	Broederstroom (Bos), ZA	daily rain	103.5 mm (4.1 in)	75.8 mm (3.0 in)	43 years	59 of 100 (Notable)
21 April 1986	Entabeni (Bos), ZA	daily rain	79.0 mm (3.1 in)	63.0 mm (2.5 in)	57 years	59 of 100 (Notable)
21 April 1986	Martinsville 2 SW, US	daily rain	63.5 mm (2.5 in)	39.4 mm (1.6 in)	57 years	58 of 100 (Notable)
21 April 1986	Trier-Petrisberg, DE	daily rain	26.6 mm (1.0 in)	15.2 mm (0.6 in)	36 years	51 of 100 (Notable)
21 April 1986	Sumidouro-Usina Sao Jorge, BR	daily rain	57.1 mm (2.2 in)	46.7 mm (1.8 in)	37 years	50 of 100 (Notable)
21 April 1986	Trier-Zewen, DE	daily rain	26.1 mm (1.0 in)	12.6 mm (0.5 in)	49 years	50 of 100 (Notable)
21 April 1986	Matiwa (B0S), ZA	daily rain	104.5 mm (4.1 in)	89.0 mm (3.5 in)	19 years	49 of 100 (Notable)
21 April 1986	Fazenda Marcondinha, BR	daily rain	71.4 mm (2.8 in)	69.4 mm (2.7 in)	15 years	47 of 100 (Notable)
21 April 1986	Coronel Macedo, BR	daily rain	41.8 mm (1.6 in)	37.3 mm (1.5 in)	37 years	47 of 100 (Notable)
21 April 1986	Svatove, UA	daily rain	26.7 mm (1.1 in)	21.1 mm (0.8 in)	4 years	46 of 100 (Notable)
21 April 1986	Tomazina, BR	daily rain	62.0 mm (2.4 in)	53.2 mm (2.1 in)	27 years	45 of 100 (Notable)
21 April 1986	Ibirarema, BR	daily rain	58.3 mm (2.3 in)	45.3 mm (1.8 in)	32 years	44 of 100 (Notable)
21 April 1986	Usina Pari, BR	daily rain	76.9 mm (3.0 in)	46.0 mm (1.8 in)	44 years	44 of 100 (Notable)
21 April 1986	Norwalk Wwtp, US	daily rain	45.0 mm (1.8 in)	8.2 mm (0.32 in)	80 years	44 of 100 (Notable)
21 April 1986	Kasane, BW	daily rain	41.0 mm (1.6 in)	37.7 mm (1.5 in)	41 years	42 of 100 (Notable)
21 April 1986	Alcozauca (Smn), MX	daily rain	26.2 mm (1.0 in)	20.1 mm (0.8 in)	56 years	42 of 100 (Notable)
21 April 1986	Debaltseve, UA	daily rain	25.8 mm (1.0 in)	11.5 mm (0.5 in)	47 years	42 of 100 (Notable)
21 April 1986	Chokpak, KZ	daily rain	48.4 mm (1.9 in)	25.4 mm (1.0 in)	28 years	41 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

1793 to 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 977 records.

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

Records on 04-21 in each year
Year	Records
1793	1
1814	1
1820	1
1838	1
1849	2
1851	1
1852	3
1854	1
1858	3
1861	2
1865	3
1866	1
1868	1
1870	1
1875	4
1876	2
1877	1
1879	3
1880	1
1881	1
1882	1
1884	1
1885	2
1888	1
1890	1
1891	1
1892	1
1893	2
1894	4
1895	1
1897	1
1898	2
1899	2
1900	7
1901	17
1902	7
1903	3
1904	10
1905	18
1906	5
1907	17
1908	25
1909	20
1910	33
1911	9
1912	22
1913	14
1914	220
1915	24
1916	64
1917	48
1918	84
1919	31
1920	85
1921	59
1922	70
1923	223
1924	119
1925	295
1926	148
1927	284
1928	269
1929	193
1930	127
1931	358
1932	304
1933	201
1934	497
1935	266
1936	277
1937	416
1938	295
1939	110
1940	462
1941	306
1942	285
1943	481
1944	261
1945	367
1946	448
1947	459
1948	365
1949	448
1950	529
1951	884
1952	665
1953	640
1954	527
1955	607
1956	497
1957	824
1958	329
1959	505
1960	889
1961	647
1962	319
1963	778
1964	1,125
1965	658
1966	756
1967	903
1968	655
1969	388
1970	728
1971	546
1972	593
1973	1,163
1974	528
1975	360
1976	452
1977	854
1978	735
1979	449
1980	1,934
1981	944
1982	1,075
1983	1,366
1984	1,231
1985	1,245
1986	977
1987	1,290
1988	898
1989	1,557
1990	1,463
1991	1,291
1992	1,763
1993	847
1994	859
1995	1,476
1996	788
1997	964
1998	876
1999	752
2000	921
2001	967
2002	1,312
2003	607
2004	586
2005	693
2006	761
2007	480
2008	1,327
2009	983
2010	805
2011	1,053
2012	687
2013	1,015
2014	393
2015	621
2016	587
2017	797
2018	862
2019	731
2020	397
2021	1,608
2022	433
2023	886
2024	754
2025	506
2026	853

Download the Data

Data for records on 1986-04-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	768
20 to 40	37
40 to 60	10
60 to 80	5
80 to 100	1
100 to 120	0
120 to 140	1