Weather Records on 21 April 1987

1,290 weather records were set or tied worldwide on 21 April 1987. Highest significance: Yanji, CN.

Key Facts for 21 April 1987

On 21 April 1987, 1,290 weather records were set or tied at long-record stations worldwide.
811 were record highs and 209 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 145 monthly and 1,140 daily.
Yanji set a monthly record daily precipitation of 49.4 mm (1.9 in) on 21 April 1987.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 457 records.

Record Map

1,290 stations

1,290 station records on 21 April 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yanji	China	Record daily precipitation	49.4 mm (1.9 in)	55 of 100 (Notable)
Madruskat	Tajikistan	Record daily precipitation	28.1 mm (1.1 in)	55 of 100 (Notable)
Yingkou	China	Record daily precipitation	52.6 mm (2.1 in)	51 of 100 (Notable)
Pogranichnyj	Russia	Record daily precipitation	45.2 mm (1.8 in)	51 of 100 (Notable)
Grauna	Brazil	Record daily precipitation	96.2 mm (3.8 in)	49 of 100 (Notable)
Fulton 3 W	United States	Record high maximum temperature	34.4 C (93.9 F)	48 of 100 (Notable)
Kurgan-Tyube	Tajikistan	Record daily precipitation	29.5 mm (1.2 in)	47 of 100 (Notable)
Dandong	China	Record daily precipitation	73.2 mm (2.9 in)	46 of 100 (Notable)
Port Gibson 1 NE	United States	Record high maximum temperature	33.9 C (93.0 F)	46 of 100 (Notable)
Shakhrinau	Tajikistan	Record daily precipitation	55.1 mm (2.2 in)	44 of 100 (Notable)
Warrensburg 4NW	United States	Record high maximum temperature	34.4 C (93.9 F)	44 of 100 (Notable)
McCamey	United States	Record daily precipitation	28.2 mm (1.1 in)	44 of 100 (Notable)
Mesa del Huracan	Mexico	Record daily precipitation	27.9 mm (1.1 in)	43 of 100 (Notable)
Ozark	United States	Record high maximum temperature	34.4 C (93.9 F)	43 of 100 (Notable)
Piracaia	Brazil	Record daily precipitation	66.4 mm (2.6 in)	42 of 100 (Notable)
Collins	United States	Record high maximum temperature	34.4 C (93.9 F)	42 of 100 (Notable)
Bakersfield	United States	Record daily precipitation	49.5 mm (1.9 in)	42 of 100 (Notable)
Anahuac	Mexico	Record daily precipitation	49.8 mm (2.0 in)	41 of 100 (Notable)
Laguna de Sanchez	Mexico	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Marshall	United States	Record high maximum temperature	33.9 C (93.0 F)	41 of 100 (Notable)
Berkeley	United States	Record high maximum temperature	30.0 C (86.0 F)	41 of 100 (Notable)
Astrakan	Russia	Record low maximum temperature	9.6 C (49.3 F)	40 of 100 (Notable)
Kislovodsk	Russia	Record low minimum temperature	-5.0 C (23.0 F)	40 of 100 (Notable)
Water Valley	United States	Record high maximum temperature	33.9 C (93.0 F)	40 of 100 (Notable)
Grafton	United States	Record high minimum temperature	11.1 C (52.0 F)	40 of 100 (Notable)
Kahului AP	United States	Record daily precipitation	37.6 mm (1.5 in)	40 of 100 (Notable)
Nhill	Australia	Record low minimum temperature	-0.4 C (31.3 F)	39 of 100 (Notable)
Tbilisi	Georgia	Record low minimum temperature	-0.2 C (31.6 F)	39 of 100 (Notable)
Dushanbe	Tajikistan	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Kalay-Khumb	Tajikistan	Record daily precipitation	62.5 mm (2.5 in)	39 of 100 (Notable)
Vandalia	United States	Record high maximum temperature	33.3 C (91.9 F)	39 of 100 (Notable)
Ganca	Azerbaijan	Record low minimum temperature	1.0 C (33.8 F)	38 of 100 (Notable)
Hkorol	Russia	Record daily precipitation	50.5 mm (2.0 in)	38 of 100 (Notable)
Corning	United States	Record high maximum temperature	33.9 C (93.0 F)	38 of 100 (Notable)
Eldon	United States	Record high maximum temperature	35.0 C (95.0 F)	38 of 100 (Notable)
Reedsburg Wwtp	United States	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
Las Burras	Mexico	Record daily precipitation	39.9 mm (1.6 in)	37 of 100 (Notable)
Parkhar	Tajikistan	Record daily precipitation	36.2 mm (1.4 in)	37 of 100 (Notable)
Minonk	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Morrison	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Mt Carroll	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Leesville	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
Mexico	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
Rolla Missouri S&T	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
Moscow	United States	Record high maximum temperature	34.4 C (93.9 F)	37 of 100 (Notable)
Sulphur Springs	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Lihue WSO AP 1020.1	United States	Record daily precipitation	32.3 mm (1.3 in)	37 of 100 (Notable)
Valparaiso	Brazil	Record daily precipitation	53.3 mm (2.1 in)	36 of 100 (Notable)
Tejolocachi (Smn)	Mexico	Record daily precipitation	37.8 mm (1.5 in)	36 of 100 (Notable)
Decatur Wtp	United States	Record high maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
Whitestown	United States	Record high maximum temperature	30.6 C (87.1 F)	36 of 100 (Notable)
Belfast	United States	Record high minimum temperature	8.3 C (46.9 F)	36 of 100 (Notable)
Waukesha Wwtp	United States	Record high maximum temperature	31.1 C (88.0 F)	36 of 100 (Notable)
Cuautla (Smn)	Mexico	Record low maximum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Tekax de Alvaro Obregon	Mexico	Record low minimum temperature	10.6 C (51.1 F)	35 of 100 (Notable)
Camden 1	United States	Record high maximum temperature	34.4 C (93.9 F)	35 of 100 (Notable)
Newport	United States	Record high maximum temperature	34.4 C (93.9 F)	35 of 100 (Notable)
Charleston	United States	Record high maximum temperature	30.0 C (86.0 F)	35 of 100 (Notable)
Marengo	United States	Record high maximum temperature	31.1 C (88.0 F)	35 of 100 (Notable)
Nashville 1 E	United States	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,290 records

Records set or tied on 21 April 1987 by type: Highest daily maximum 618, Lowest daily maximum 111, Highest daily minimum 193, Lowest daily minimum 98, Heaviest daily rainfall 268, Deepest snow cover 2.

Records on 21 April 1987 by type
Record type	Records
Highest daily maximum	618
Lowest daily maximum	111
Highest daily minimum	193
Lowest daily minimum	98
Heaviest daily rainfall	268
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 21 April 1987 by timescale: all-time 5, monthly 145, daily 1,140.

How Much Records Were Beaten By

1,044 broken records

Margins by which the 1,044 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 250.0. Ties are not counted.

Top 20 by Significance

21 April 1987

Top 20 records on 21 April 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1987	Yanji, CN	monthly rain	49.4 mm (1.9 in)	21.0 mm (0.8 in)	8 years	55 of 100 (Notable)
21 April 1987	Madruskat, TJ	daily rain	28.1 mm (1.1 in)	20.8 mm (0.8 in)	42 years	55 of 100 (Notable)
21 April 1987	Yingkou, CN	daily rain	52.6 mm (2.1 in)	33.9 mm (1.3 in)	28 years	51 of 100 (Notable)
21 April 1987	Pogranichnyj, RU	daily rain	45.2 mm (1.8 in)	25.0 mm (1.0 in)	12 years	51 of 100 (Notable)
21 April 1987	Grauna, BR	monthly rain	96.2 mm (3.8 in)	23.2 mm (0.9 in)	50 years	49 of 100 (Notable)
21 April 1987	Fulton 3 W, US	monthly high max	34.4 C (93.9 F)	1.1 C (2.0 F)	90 years	48 of 100 (Notable)
21 April 1987	Kurgan-Tyube, TJ	daily rain	29.5 mm (1.2 in)	20.1 mm (0.8 in)	28 years	47 of 100 (Notable)
21 April 1987	Dandong, CN	daily rain	73.2 mm (2.9 in)	36.7 mm (1.4 in)	17 years	46 of 100 (Notable)
21 April 1987	Port Gibson 1 NE, US	monthly high max	33.9 C (93.0 F)	0.6 C (1.1 F)	87 years	46 of 100 (Notable)
21 April 1987	Shakhrinau, TJ	daily rain	55.1 mm (2.2 in)	28.8 mm (1.1 in)	42 years	44 of 100 (Notable)
21 April 1987	Warrensburg 4NW, US	monthly high max	34.4 C (93.9 F)	1.1 C (2.0 F)	82 years	44 of 100 (Notable)
21 April 1987	McCamey, US	daily rain	28.2 mm (1.1 in)	26.7 mm (1.1 in)	37 years	44 of 100 (Notable)
21 April 1987	Mesa del Huracan, MX	daily rain	27.9 mm (1.1 in)	22.1 mm (0.9 in)	29 years	43 of 100 (Notable)
21 April 1987	Ozark, US	monthly high max	34.4 C (93.9 F)	0.5 C (0.9 F)	79 years	43 of 100 (Notable)
21 April 1987	Piracaia, BR	daily rain	66.4 mm (2.6 in)	48.1 mm (1.9 in)	9 years	42 of 100 (Notable)
21 April 1987	Collins, US	monthly high max	34.4 C (93.9 F)	1.6 C (2.9 F)	71 years	42 of 100 (Notable)
21 April 1987	Bakersfield, US	daily rain	49.5 mm (1.9 in)	38.3 mm (1.5 in)	9 years	42 of 100 (Notable)
21 April 1987	Anahuac, MX	daily rain	49.8 mm (2.0 in)	32.5 mm (1.3 in)	50 years	41 of 100 (Notable)
21 April 1987	Laguna de Sanchez, MX	daily rain	36.8 mm (1.4 in)	27.1 mm (1.1 in)	5 years	41 of 100 (Notable)
21 April 1987	Marshall, US	monthly high max	33.9 C (93.0 F)	1.1 C (2.0 F)	67 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 1987

Records set or tied on this calendar date in each year from 1793 to 1987. 1987 had 1,290 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 1987-04-21: 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 2026-10-14 (14 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 50	1,043
50 to 100	0
100 to 150	0
150 to 200	0
200 to 250	1