Weather Records on 31 May 1987

822 weather records were set or tied worldwide on 31 May 1987. Highest significance: Rayones, MX.

Key Facts for 31 May 1987

On 31 May 1987, 822 weather records were set or tied at long-record stations worldwide.
492 were record highs and 103 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 105 monthly and 716 daily.
Rayones set a daily record precipitation of 53.8 mm (2.1 in) on 31 May 1987.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 435 records.

Record Map

822 stations

822 station records on 31 May 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rayones	Mexico	Record daily precipitation	53.8 mm (2.1 in)	54 of 100 (Notable)
Longmont 2 ESE	United States	Record high minimum temperature	17.8 C (64.0 F)	52 of 100 (Notable)
Newark Liberty Intl AP	United States	Record high minimum temperature	23.9 C (75.0 F)	52 of 100 (Notable)
Angola	United States	Record daily precipitation	47.2 mm (1.9 in)	51 of 100 (Notable)
Hyannis	United States	Record high minimum temperature	20.0 C (68.0 F)	51 of 100 (Notable)
Hebbronville	United States	Record daily precipitation	106.7 mm (4.2 in)	51 of 100 (Notable)
Lajes Ab	Portugal	Record daily precipitation	51.1 mm (2.0 in)	50 of 100 (Notable)
Villagran (Smn)	Mexico	Record daily precipitation	102.9 mm (4.1 in)	49 of 100 (Notable)
Ulan-Ude	Russia	Record high minimum temperature	16.5 C (61.7 F)	48 of 100 (Notable)
Philadelphia City	United States	Record high minimum temperature	26.1 C (79.0 F)	48 of 100 (Notable)
Ny City Cntrl Park	United States	Record high minimum temperature	24.4 C (75.9 F)	48 of 100 (Notable)
Hightstown 2 W	United States	Record high minimum temperature	21.7 C (71.1 F)	47 of 100 (Notable)
San Luis Potosi (Dge)	Mexico	Record daily precipitation	40.9 mm (1.6 in)	45 of 100 (Notable)
Wanakena Rngr School	United States	Record high minimum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Clendenin	United States	Record daily precipitation	46.0 mm (1.8 in)	41 of 100 (Notable)
Middletown 4 W	United States	Record high maximum temperature	33.3 C (91.9 F)	40 of 100 (Notable)
New Bedford Coop	United States	Record high minimum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Menard	United States	Record low maximum temperature	21.1 C (70.0 F)	39 of 100 (Notable)
London Locks	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Erfurt-Bindersleben	Germany	Record daily precipitation	31.7 mm (1.2 in)	38 of 100 (Notable)
Jal	United States	Record daily precipitation	37.8 mm (1.5 in)	38 of 100 (Notable)
Setauket Strong	United States	Record high maximum temperature	32.2 C (90.0 F)	38 of 100 (Notable)
Odessa	United States	Record daily precipitation	41.1 mm (1.6 in)	38 of 100 (Notable)
Enosburg Falls	United States	Record high minimum temperature	19.4 C (66.9 F)	38 of 100 (Notable)
Taunton	United States	Record high maximum temperature	35.6 C (96.1 F)	37 of 100 (Notable)
Sonora	United States	Record daily precipitation	68.3 mm (2.7 in)	37 of 100 (Notable)
Dachwig	Germany	Record daily precipitation	25.6 mm (1.0 in)	36 of 100 (Notable)
Temilpa	Mexico	Record low minimum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
Fredericksburg	United States	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
Greifswald	Germany	Record low minimum temperature	2.7 C (36.9 F)	35 of 100 (Notable)
Zharkent	Kazakhstan	Record high minimum temperature	20.7 C (69.3 F)	35 of 100 (Notable)
Wellsburg Wtr Trmt Pl	United States	Record high minimum temperature	18.9 C (66.0 F)	35 of 100 (Notable)
Corozal Substn	Puerto Rico [United States]	Record high maximum temperature	35.0 C (95.0 F)	34 of 100 (Routine)
Tenerife/Los Rodeos	Spain	Record high minimum temperature	18.4 C (65.1 F)	34 of 100 (Routine)
Beijing	China	Record daily precipitation	26.5 mm (1.0 in)	33 of 100 (Routine)
Paso de San Antonio	Mexico	Record daily precipitation	74.9 mm (2.9 in)	33 of 100 (Routine)
Kane 1NNE	United States	Record high maximum temperature	32.2 C (90.0 F)	33 of 100 (Routine)
Seminole	United States	Record daily precipitation	54.4 mm (2.1 in)	33 of 100 (Routine)
Forks 1 E	United States	Record daily precipitation	34.8 mm (1.4 in)	33 of 100 (Routine)
Rainier Paradise Rs	United States	Record daily snowfall	14.0 cm (5.5 in)	33 of 100 (Routine)
San Luis Obispo Poly	United States	Record low minimum temperature	3.9 C (39.0 F)	32 of 100 (Routine)
Stockton 1 E	United States	Record daily precipitation	62.5 mm (2.5 in)	32 of 100 (Routine)
Elizabethtown	United States	Record high maximum temperature	33.9 C (93.0 F)	32 of 100 (Routine)
Riverhead Rsch Farm	United States	Record high minimum temperature	20.0 C (68.0 F)	32 of 100 (Routine)
Boston	United States	Record high minimum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Webster Dam	United States	Record daily precipitation	65.0 mm (2.6 in)	31 of 100 (Routine)
Middleton	United States	Record high minimum temperature	20.6 C (69.1 F)	31 of 100 (Routine)
Avon	United States	Record high minimum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Patchogue 2 N	United States	Record high minimum temperature	19.4 C (66.9 F)	31 of 100 (Routine)
Westfield 2 SSE	United States	Record high minimum temperature	20.6 C (69.1 F)	31 of 100 (Routine)
Detroit Dam	United States	Record daily precipitation	31.8 mm (1.3 in)	31 of 100 (Routine)
Wilmington New Castle Co AP	United States	Record high minimum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Kjahta	Russia	Record high minimum temperature	12.9 C (55.2 F)	30 of 100 (Routine)
Manchester 4 W	United States	Record daily precipitation	47.8 mm (1.9 in)	30 of 100 (Routine)
Glenham	United States	Record high minimum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Tiffin	United States	Record daily precipitation	42.2 mm (1.7 in)	30 of 100 (Routine)
Cookeville	United States	Record daily precipitation	30.5 mm (1.2 in)	30 of 100 (Routine)
Kent	United States	Record low maximum temperature	12.8 C (55.0 F)	30 of 100 (Routine)
Rainier Paradise Rs	United States	Record daily precipitation	35.1 mm (1.4 in)	30 of 100 (Routine)
Creston	United States	Record high maximum temperature	35.0 C (95.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

822 records

Records set or tied on 31 May 1987 by type: Highest daily maximum 230, Lowest daily maximum 57, Highest daily minimum 262, Lowest daily minimum 46, Heaviest daily rainfall 225, Heaviest daily snowfall 2.

Records on 31 May 1987 by type
Record type	Records
Highest daily maximum	230
Lowest daily maximum	57
Highest daily minimum	262
Lowest daily minimum	46
Heaviest daily rainfall	225
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 31 May 1987 by timescale: all-time 1, monthly 105, daily 716.

How Much Records Were Beaten By

597 broken records

Margins by which the 597 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 86.6. Ties are not counted.

Top 20 by Significance

31 May 1987

Top 20 records on 31 May 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1987	Rayones, MX	daily rain	53.8 mm (2.1 in)	50.8 mm (2.0 in)	41 years	54 of 100 (Notable)
31 May 1987	Longmont 2 ESE, US	monthly high min	17.8 C (64.0 F)	2.2 C (4.0 F)	92 years	52 of 100 (Notable)
31 May 1987	Newark Liberty Intl AP, US	monthly high min	23.9 C (75.0 F)	1.1 C (2.0 F)	115 years	52 of 100 (Notable)
31 May 1987	Angola, US	daily rain	47.2 mm (1.9 in)	27.6 mm (1.1 in)	46 years	51 of 100 (Notable)
31 May 1987	Hyannis, US	monthly high min	20.0 C (68.0 F)	2.8 C (5.0 F)	84 years	51 of 100 (Notable)
31 May 1987	Hebbronville, US	daily rain	106.7 mm (4.2 in)	77.2 mm (3.0 in)	16 years	51 of 100 (Notable)
31 May 1987	Lajes Ab, PT	daily rain	51.1 mm (2.0 in)	29.0 mm (1.1 in)	24 years	50 of 100 (Notable)
31 May 1987	Villagran (Smn), MX	daily rain	102.9 mm (4.1 in)	86.6 mm (3.4 in)	16 years	49 of 100 (Notable)
31 May 1987	Ulan-Ude, RU	monthly high min	16.5 C (61.7 F)	3.0 C (5.4 F)	77 years	48 of 100 (Notable)
31 May 1987	Philadelphia City, US	monthly high min	26.1 C (79.0 F)	0.5 C (0.9 F)	91 years	48 of 100 (Notable)
31 May 1987	Ny City Cntrl Park, US	monthly high min	24.4 C (75.9 F)	0.5 C (0.9 F)	91 years	48 of 100 (Notable)
31 May 1987	Hightstown 2 W, US	monthly high min	21.7 C (71.1 F)	0.6 C (1.1 F)	92 years	47 of 100 (Notable)
31 May 1987	San Luis Potosi (Dge), MX	daily rain	40.9 mm (1.6 in)	26.7 mm (1.1 in)	34 years	45 of 100 (Notable)
31 May 1987	Wanakena Rngr School, US	monthly high min	22.8 C (73.0 F)	3.9 C (7.0 F)	65 years	43 of 100 (Notable)
31 May 1987	Clendenin, US	daily rain	46.0 mm (1.8 in)	31.5 mm (1.2 in)	18 years	41 of 100 (Notable)
31 May 1987	Middletown 4 W, US	daily high max	33.3 C (91.9 F)	0.2 C (0.4 F)	107 years	40 of 100 (Notable)
31 May 1987	New Bedford Coop, US	monthly high min	22.2 C (72.0 F)	1.1 C (2.0 F)	57 years	39 of 100 (Notable)
31 May 1987	Menard, US	daily low max	21.1 C (70.0 F)	1.7 C (3.1 F)	91 years	39 of 100 (Notable)
31 May 1987	London Locks, US	daily rain	43.2 mm (1.7 in)	17.8 mm (0.7 in)	46 years	39 of 100 (Notable)
31 May 1987	Erfurt-Bindersleben, DE	daily rain	31.7 mm (1.2 in)	15.7 mm (0.6 in)	30 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

1811 to 1987

Records set or tied on this calendar date in each year from 1811 to 1987. 1987 had 822 records.

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

Records on 05-31 in each year
Year	Records
1811	1
1818	3
1827	1
1836	2
1845	1
1847	1
1853	2
1855	2
1858	1
1864	2
1865	1
1866	1
1867	1
1868	4
1869	1
1871	2
1873	3
1874	1
1877	1
1878	2
1879	2
1880	3
1882	1
1883	1
1885	1
1888	1
1889	2
1890	1
1892	1
1893	4
1894	2
1895	8
1897	5
1898	7
1899	1
1900	2
1901	9
1902	9
1903	17
1904	19
1905	7
1906	11
1907	20
1908	12
1909	8
1910	26
1911	20
1912	15
1913	83
1914	20
1915	23
1916	23
1917	13
1918	20
1919	44
1920	46
1921	157
1922	49
1923	98
1924	152
1925	226
1926	228
1927	121
1928	67
1929	246
1930	612
1931	223
1932	181
1933	397
1934	782
1935	156
1936	559
1937	462
1938	424
1939	461
1940	383
1941	410
1942	364
1943	552
1944	372
1945	457
1946	380
1947	439
1948	295
1949	303
1950	467
1951	640
1952	374
1953	654
1954	445
1955	534
1956	632
1957	304
1958	429
1959	459
1960	247
1961	472
1962	565
1963	354
1964	1,237
1965	494
1966	601
1967	987
1968	276
1969	555
1970	573
1971	714
1972	1,127
1973	418
1974	473
1975	797
1976	435
1977	605
1978	873
1979	915
1980	517
1981	775
1982	817
1983	1,494
1984	2,047
1985	790
1986	1,365
1987	822
1988	1,255
1989	912
1990	900
1991	1,381
1992	1,031
1993	982
1994	776
1995	693
1996	946
1997	1,163
1998	1,215
1999	790
2000	1,172
2001	1,047
2002	1,162
2003	831
2004	1,071
2005	724
2006	1,045
2007	793
2008	809
2009	570
2010	741
2011	1,498
2012	764
2013	1,100
2014	565
2015	704
2016	402
2017	440
2018	1,211
2019	420
2020	673
2021	834
2022	902
2023	454
2024	809
2025	1,204
2026	536

Download the Data

Data for records on 1987-05-31: 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	565
20 to 40	26
40 to 60	3
60 to 80	2
80 to 100	1