Weather Records on 21 May 1987

1,242 weather records were set or tied worldwide on 21 May 1987. Highest significance: Baudette, US.

Key Facts for 21 May 1987

On 21 May 1987, 1,242 weather records were set or tied at long-record stations worldwide.
408 were record highs and 408 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 39 monthly and 1,201 daily.
Baudette set a daily record precipitation of 51.8 mm (2.0 in) on 21 May 1987.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 455 records.

Record Map

1,242 stations

1,242 station records on 21 May 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Baudette	United States	Record daily precipitation	51.8 mm (2.0 in)	68 of 100 (Major)
Warroad	United States	Record daily precipitation	49.5 mm (1.9 in)	66 of 100 (Major)
Jamestown State Hosp	United States	Record daily precipitation	47.0 mm (1.9 in)	63 of 100 (Major)
Williams 3 SW	United States	Record daily precipitation	86.1 mm (3.4 in)	61 of 100 (Major)
Fullerton 1 ESE	United States	Record daily precipitation	57.2 mm (2.3 in)	57 of 100 (Notable)
Utica Starved Rock Dam	United States	Record daily precipitation	60.5 mm (2.4 in)	56 of 100 (Notable)
Sharon	United States	Record daily precipitation	53.3 mm (2.1 in)	56 of 100 (Notable)
Fazenda Santo Angelo	Brazil	Record daily precipitation	93.3 mm (3.7 in)	54 of 100 (Notable)
Szeged	Hungary	Record daily precipitation	54.6 mm (2.1 in)	54 of 100 (Notable)
Intake	South Africa	Record daily precipitation	100.2 mm (3.9 in)	54 of 100 (Notable)
Medina	United States	Record daily precipitation	59.7 mm (2.4 in)	53 of 100 (Notable)
Egvard	Armenia	Record daily precipitation	35.5 mm (1.4 in)	52 of 100 (Notable)
Maddock	United States	Record daily precipitation	35.1 mm (1.4 in)	52 of 100 (Notable)
Osijek	Croatia	Record daily precipitation	48.9 mm (1.9 in)	51 of 100 (Notable)
Zoseni	Latvia	Record daily precipitation	33.1 mm (1.3 in)	51 of 100 (Notable)
Belgrade (Observatory)	Serbia	Record daily precipitation	56.4 mm (2.2 in)	51 of 100 (Notable)
Arad	Romania	Record daily precipitation	37.1 mm (1.5 in)	51 of 100 (Notable)
Tuscola	United States	Record high minimum temperature	25.6 C (78.1 F)	51 of 100 (Notable)
Sykeston	United States	Record daily precipitation	62.2 mm (2.4 in)	51 of 100 (Notable)
Woodworth 3NE	United States	Record daily precipitation	58.7 mm (2.3 in)	51 of 100 (Notable)
Argyle	United States	Record daily precipitation	47.5 mm (1.9 in)	50 of 100 (Notable)
Wishek	United States	Record daily precipitation	40.6 mm (1.6 in)	50 of 100 (Notable)
Cuthbert	United States	Record daily precipitation	131.6 mm (5.2 in)	49 of 100 (Notable)
Center 4SE	United States	Record daily precipitation	44.5 mm (1.8 in)	49 of 100 (Notable)
Mc Ville	United States	Record daily precipitation	47.8 mm (1.9 in)	49 of 100 (Notable)
Shorja	Armenia	Record daily precipitation	30.1 mm (1.2 in)	48 of 100 (Notable)
Nurnberg	Germany	Record low maximum temperature	6.8 C (44.2 F)	48 of 100 (Notable)
Kloofend	South Africa	Record daily precipitation	140.0 mm (5.5 in)	47 of 100 (Notable)
Lednik Phedchenko (Im. Gorbuno	Tajikistan	Record daily precipitation	38.0 mm (1.5 in)	47 of 100 (Notable)
High Landing 2 NW	United States	Record daily precipitation	46.7 mm (1.8 in)	47 of 100 (Notable)
Larimore 4SW	United States	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Mayville	United States	Record daily precipitation	45.0 mm (1.8 in)	47 of 100 (Notable)
Steele 4N	United States	Record daily precipitation	40.1 mm (1.6 in)	47 of 100 (Notable)
Jamestown Muni AP	United States	Record daily precipitation	47.8 mm (1.9 in)	47 of 100 (Notable)
Napas	Russia	Record daily precipitation	29.8 mm (1.2 in)	46 of 100 (Notable)
Le Claire L&D 14	United States	Record daily precipitation	43.2 mm (1.7 in)	46 of 100 (Notable)
Litchville 2NW	United States	Record daily precipitation	46.7 mm (1.8 in)	46 of 100 (Notable)
Napoleon	United States	Record daily precipitation	55.4 mm (2.2 in)	46 of 100 (Notable)
Casa Grande	Brazil	Record daily precipitation	83.2 mm (3.3 in)	45 of 100 (Notable)
Nis	Serbia	Record daily precipitation	32.0 mm (1.3 in)	45 of 100 (Notable)
Ada	United States	Record daily precipitation	47.8 mm (1.9 in)	45 of 100 (Notable)
Valley City 3 NNW	United States	Record daily precipitation	41.7 mm (1.6 in)	45 of 100 (Notable)
Tiirikoja	Estonia	Record daily precipitation	44.4 mm (1.7 in)	44 of 100 (Notable)
Lima	United States	Record daily snowfall	20.3 cm (8.0 in)	44 of 100 (Notable)
Park River	United States	Record daily precipitation	47.0 mm (1.9 in)	44 of 100 (Notable)
New London	United States	Record daily precipitation	109.7 mm (4.3 in)	43 of 100 (Notable)
Red Lake Falls	United States	Record daily precipitation	55.1 mm (2.2 in)	43 of 100 (Notable)
Thorhult	United States	Record daily precipitation	68.1 mm (2.7 in)	43 of 100 (Notable)
Mandan Exp STN	United States	Record daily precipitation	47.8 mm (1.9 in)	43 of 100 (Notable)
Petersburg 2 N	United States	Record daily precipitation	40.4 mm (1.6 in)	43 of 100 (Notable)
Pettibone	United States	Record daily precipitation	40.6 mm (1.6 in)	43 of 100 (Notable)
Turtle Lake	United States	Record daily precipitation	36.8 mm (1.4 in)	43 of 100 (Notable)
Freiburg	Germany	Record low maximum temperature	8.3 C (46.9 F)	42 of 100 (Notable)
Saentis	Switzerland	Record low maximum temperature	-8.1 C (17.4 F)	42 of 100 (Notable)
Gonvick 2 W	United States	Record daily precipitation	35.6 mm (1.4 in)	42 of 100 (Notable)
Karlsruhe	Germany	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Caribou 2 S	United States	Record daily precipitation	35.6 mm (1.4 in)	41 of 100 (Notable)
Ashley	United States	Record daily precipitation	31.8 mm (1.3 in)	41 of 100 (Notable)
Shields	United States	Record daily precipitation	45.7 mm (1.8 in)	41 of 100 (Notable)
Sonnblick	Austria	Record low minimum temperature	-14.4 C (6.1 F)	40 of 100 (Notable)

Counts by Type and Timescale

1,242 records

Records set or tied on 21 May 1987 by type: Highest daily maximum 151, Lowest daily maximum 308, Highest daily minimum 257, Lowest daily minimum 100, Heaviest daily rainfall 406, Heaviest daily snowfall 11, Deepest snow cover 9.

Records on 21 May 1987 by type
Record type	Records
Highest daily maximum	151
Lowest daily maximum	308
Highest daily minimum	257
Lowest daily minimum	100
Heaviest daily rainfall	406
Heaviest daily snowfall	11
Deepest snow cover	9

Records on 21 May 1987 by timescale: all-time 2, monthly 39, daily 1,201.

How Much Records Were Beaten By

1,020 broken records

Margins by which the 1,020 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 165.0. Ties are not counted.

Top 20 by Significance

21 May 1987

Top 20 records on 21 May 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1987	Baudette, US	daily rain	51.8 mm (2.0 in)	35.8 mm (1.4 in)	68 years	68 of 100 (Major)
21 May 1987	Warroad, US	daily rain	49.5 mm (1.9 in)	30.7 mm (1.2 in)	60 years	66 of 100 (Major)
21 May 1987	Jamestown State Hosp, US	daily rain	47.0 mm (1.9 in)	21.6 mm (0.9 in)	93 years	63 of 100 (Major)
21 May 1987	Williams 3 SW, US	daily rain	86.1 mm (3.4 in)	56.9 mm (2.2 in)	52 years	61 of 100 (Major)
21 May 1987	Fullerton 1 ESE, US	daily rain	57.2 mm (2.3 in)	34.8 mm (1.4 in)	56 years	57 of 100 (Notable)
21 May 1987	Utica Starved Rock Dam, US	daily rain	60.5 mm (2.4 in)	50.1 mm (2.0 in)	40 years	56 of 100 (Notable)
21 May 1987	Sharon, US	daily rain	53.3 mm (2.1 in)	29.2 mm (1.1 in)	60 years	56 of 100 (Notable)
21 May 1987	Fazenda Santo Angelo, BR	monthly rain	93.3 mm (3.7 in)	28.3 mm (1.1 in)	26 years	54 of 100 (Notable)
21 May 1987	Szeged, HU	monthly rain	54.6 mm (2.1 in)	11.8 mm (0.5 in)	63 years	54 of 100 (Notable)
21 May 1987	Intake, ZA	daily rain	100.2 mm (3.9 in)	71.2 mm (2.8 in)	32 years	54 of 100 (Notable)
21 May 1987	Medina, US	daily rain	59.7 mm (2.4 in)	47.5 mm (1.9 in)	17 years	53 of 100 (Notable)
21 May 1987	Egvard, AM	daily rain	35.5 mm (1.4 in)	25.4 mm (1.0 in)	24 years	52 of 100 (Notable)
21 May 1987	Maddock, US	daily rain	35.1 mm (1.4 in)	19.9 mm (0.8 in)	68 years	52 of 100 (Notable)
21 May 1987	Osijek, HR	daily rain	48.9 mm (1.9 in)	27.8 mm (1.1 in)	17 years	51 of 100 (Notable)
21 May 1987	Zoseni, LV	daily rain	33.1 mm (1.3 in)	24.4 mm (1.0 in)	24 years	51 of 100 (Notable)
21 May 1987	Belgrade (Observatory), RS	daily rain	56.4 mm (2.2 in)	32.3 mm (1.3 in)	20 years	51 of 100 (Notable)
21 May 1987	Arad, RO	daily rain	37.1 mm (1.5 in)	20.6 mm (0.8 in)	37 years	51 of 100 (Notable)
21 May 1987	Tuscola, US	monthly high min	25.6 C (78.1 F)	2.8 C (5.0 F)	93 years	51 of 100 (Notable)
21 May 1987	Sykeston, US	daily rain	62.2 mm (2.4 in)	48.5 mm (1.9 in)	29 years	51 of 100 (Notable)
21 May 1987	Woodworth 3NE, US	daily rain	58.7 mm (2.3 in)	46.0 mm (1.8 in)	29 years	51 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 1,242 records.

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

Records on 05-21 in each year
Year	Records
1793	1
1795	1
1811	1
1837	2
1842	1
1847	2
1854	1
1857	1
1858	1
1865	1
1866	1
1870	2
1875	1
1876	1
1880	2
1882	1
1885	1
1886	2
1887	3
1889	5
1890	3
1891	6
1892	1
1893	1
1894	4
1895	4
1896	5
1897	2
1898	1
1899	5
1900	1
1901	3
1902	4
1903	26
1904	8
1905	7
1906	12
1907	36
1908	13
1909	13
1910	14
1911	87
1912	24
1913	13
1914	26
1915	24
1916	13
1917	76
1918	51
1919	170
1920	39
1921	158
1922	39
1923	125
1924	148
1925	250
1926	221
1927	207
1928	173
1929	247
1930	133
1931	488
1932	343
1933	290
1934	590
1935	190
1936	328
1937	227
1938	348
1939	355
1940	456
1941	525
1942	482
1943	463
1944	310
1945	515
1946	324
1947	485
1948	312
1949	593
1950	403
1951	271
1952	385
1953	501
1954	961
1955	507
1956	409
1957	709
1958	511
1959	684
1960	615
1961	306
1962	553
1963	598
1964	788
1965	238
1966	296
1967	1,022
1968	549
1969	832
1970	449
1971	536
1972	557
1973	493
1974	847
1975	1,160
1976	393
1977	756
1978	575
1979	787
1980	857
1981	1,550
1982	599
1983	1,106
1984	950
1985	610
1986	908
1987	1,242
1988	819
1989	671
1990	947
1991	1,065
1992	1,143
1993	1,197
1994	656
1995	749
1996	1,461
1997	953
1998	1,200
1999	544
2000	897
2001	1,187
2002	2,048
2003	807
2004	898
2005	1,020
2006	810
2007	894
2008	740
2009	1,315
2010	962
2011	959
2012	848
2013	884
2014	522
2015	956
2016	567
2017	780
2018	525
2019	1,668
2020	707
2021	1,131
2022	1,512
2023	794
2024	751
2025	776
2026	356

Download the Data

Data for records on 1987-05-21: 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 25	962
25 to 50	44
50 to 75	9
75 to 100	4
100 to 125	0
125 to 150	0
150 to 175	1