Weather Records on 31 May 1986

1,365 weather records were set or tied worldwide on 31 May 1986. Highest significance: Jonacatepec, MX.

Key Facts for 31 May 1986

On 31 May 1986, 1,365 weather records were set or tied at long-record stations worldwide.
899 were record highs and 230 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 201 monthly and 1,162 daily.
Jonacatepec set a daily record precipitation of 59.9 mm (2.4 in) on 31 May 1986.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 432 records.

Record Map

1,365 stations

1,365 station records on 31 May 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jonacatepec	Mexico	Record daily precipitation	59.9 mm (2.4 in)	55 of 100 (Notable)
Mimbres 4NNW	United States	Record daily precipitation	26.7 mm (1.1 in)	55 of 100 (Notable)
Ilhota-Jusante	Brazil	Record daily precipitation	69.4 mm (2.7 in)	52 of 100 (Notable)
Ceballos	Mexico	Record daily precipitation	52.8 mm (2.1 in)	49 of 100 (Notable)
Dialville 2 W	United States	Record daily precipitation	73.7 mm (2.9 in)	47 of 100 (Notable)
Lomba Alta	Brazil	Record daily precipitation	53.8 mm (2.1 in)	45 of 100 (Notable)
Fazenda Boa Esperanca	Brazil	Record daily precipitation	54.8 mm (2.2 in)	45 of 100 (Notable)
Beregovo	Ukraine	Record daily precipitation	31.3 mm (1.2 in)	45 of 100 (Notable)
Biskra	Algeria	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Tower 2S	United States	Record high maximum temperature	35.0 C (95.0 F)	44 of 100 (Notable)
Marathon	United States	Record daily precipitation	36.8 mm (1.4 in)	44 of 100 (Notable)
Salem AP (McNary Field)	United States	Record high minimum temperature	16.1 C (61.0 F)	44 of 100 (Notable)
Anaconda	United States	Record high minimum temperature	15.0 C (59.0 F)	43 of 100 (Notable)
Coshocton Ag Rsch STN	United States	Record daily precipitation	59.4 mm (2.3 in)	43 of 100 (Notable)
Muleshoe #1	United States	Record daily precipitation	53.3 mm (2.1 in)	43 of 100 (Notable)
Neisse Central	Brazil	Record daily precipitation	50.0 mm (2.0 in)	42 of 100 (Notable)
Hohenpeissenberg	Germany	Record low maximum temperature	4.9 C (40.8 F)	42 of 100 (Notable)
Gorlitz	Germany	Record low maximum temperature	10.3 C (50.5 F)	42 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record low maximum temperature	10.2 C (50.4 F)	42 of 100 (Notable)
Chemnitz	Germany	Record low maximum temperature	7.5 C (45.5 F)	42 of 100 (Notable)
Virginia City	United States	Record high maximum temperature	30.0 C (86.0 F)	42 of 100 (Notable)
Praha-Klementinum	Czech Republic	Record low maximum temperature	10.5 C (50.9 F)	41 of 100 (Notable)
Hohenpeissenberg	Germany	Record low minimum temperature	0.7 C (33.3 F)	41 of 100 (Notable)
Fichtelberg	Germany	Record snow depth	15.0 cm (5.9 in)	40 of 100 (Notable)
Two Harbors	United States	Record high maximum temperature	34.4 C (93.9 F)	40 of 100 (Notable)
Biskra	Algeria	Record low maximum temperature	26.4 C (79.5 F)	39 of 100 (Notable)
Polson	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Corvallis State UNIV	United States	Record high minimum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Mc Minnville	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Garcia	Brazil	Record daily precipitation	45.0 mm (1.8 in)	38 of 100 (Notable)
Lazdijai	Lithuania	Record daily precipitation	27.6 mm (1.1 in)	38 of 100 (Notable)
Nevada City	United States	Record high minimum temperature	17.2 C (63.0 F)	38 of 100 (Notable)
Deer Flat Dam	United States	Record high maximum temperature	36.1 C (97.0 F)	38 of 100 (Notable)
Yerington	United States	Record high minimum temperature	16.1 C (61.0 F)	38 of 100 (Notable)
Clovis	United States	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Heppner	United States	Record high maximum temperature	36.7 C (98.1 F)	38 of 100 (Notable)
Rainier Paradise Rs	United States	Record high maximum temperature	28.3 C (82.9 F)	38 of 100 (Notable)
Baltimore Customs House	United States	Record high maximum temperature	35.6 C (96.1 F)	38 of 100 (Notable)
Rio Pequeno	Brazil	Record daily precipitation	45.6 mm (1.8 in)	37 of 100 (Notable)
Gospic	Croatia	Record daily precipitation	48.3 mm (1.9 in)	37 of 100 (Notable)
Independence	United States	Record high minimum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Susanville 2SW	United States	Record high minimum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Tahoe City	United States	Record high minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Newark Ag Farm	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
Rochester	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Kalispell Glacier AP	United States	Record high maximum temperature	33.3 C (91.9 F)	37 of 100 (Notable)
Carson City	United States	Record high minimum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Yeso 2 S	United States	Record daily precipitation	31.8 mm (1.3 in)	37 of 100 (Notable)
Moro	United States	Record high maximum temperature	37.8 C (100.0 F)	37 of 100 (Notable)
Colfax	United States	Record high maximum temperature	35.0 C (95.0 F)	37 of 100 (Notable)
Ellensburg	United States	Record high maximum temperature	37.2 C (99.0 F)	37 of 100 (Notable)
Sunnyside	United States	Record high maximum temperature	40.0 C (104.0 F)	37 of 100 (Notable)
Sunnyside	United States	Record high minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Pomerode	Brazil	Record daily precipitation	47.2 mm (1.9 in)	36 of 100 (Notable)
Divisa de Anitapolis	Brazil	Record daily precipitation	53.0 mm (2.1 in)	36 of 100 (Notable)
Idaho City	United States	Record high maximum temperature	34.4 C (93.9 F)	36 of 100 (Notable)
Moscow U of I	United States	Record high maximum temperature	32.8 C (91.0 F)	36 of 100 (Notable)
Hamilton	United States	Record high maximum temperature	34.4 C (93.9 F)	36 of 100 (Notable)
Mina	United States	Record high minimum temperature	20.0 C (68.0 F)	36 of 100 (Notable)
Yoakum	United States	Record daily precipitation	69.1 mm (2.7 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,365 records

Records set or tied on 31 May 1986 by type: Highest daily maximum 521, Lowest daily maximum 137, Highest daily minimum 378, Lowest daily minimum 93, Heaviest daily rainfall 233, Deepest snow cover 3.

Records on 31 May 1986 by type
Record type	Records
Highest daily maximum	521
Lowest daily maximum	137
Highest daily minimum	378
Lowest daily minimum	93
Heaviest daily rainfall	233
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 31 May 1986 by timescale: all-time 2, monthly 201, daily 1,162.

How Much Records Were Beaten By

1,048 broken records

Margins by which the 1,048 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 150.0. Ties are not counted.

Top 20 by Significance

31 May 1986

Top 20 records on 31 May 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1986	Jonacatepec, MX	daily rain	59.9 mm (2.4 in)	33.5 mm (1.3 in)	44 years	55 of 100 (Notable)
31 May 1986	Mimbres 4NNW, US	daily rain	26.7 mm (1.1 in)	15.0 mm (0.6 in)	72 years	55 of 100 (Notable)
31 May 1986	Ilhota-Jusante, BR	daily rain	69.4 mm (2.7 in)	50.3 mm (2.0 in)	43 years	52 of 100 (Notable)
31 May 1986	Ceballos, MX	daily rain	52.8 mm (2.1 in)	41.9 mm (1.6 in)	20 years	49 of 100 (Notable)
31 May 1986	Dialville 2 W, US	daily rain	73.7 mm (2.9 in)	27.5 mm (1.1 in)	84 years	47 of 100 (Notable)
31 May 1986	Lomba Alta, BR	daily rain	53.8 mm (2.1 in)	39.8 mm (1.6 in)	43 years	45 of 100 (Notable)
31 May 1986	Fazenda Boa Esperanca, BR	daily rain	54.8 mm (2.2 in)	46.6 mm (1.8 in)	19 years	45 of 100 (Notable)
31 May 1986	Beregovo, UA	daily rain	31.3 mm (1.2 in)	18.2 mm (0.7 in)	37 years	45 of 100 (Notable)
31 May 1986	Biskra, DZ	daily rain	33.0 mm (1.3 in)	17.0 mm (0.7 in)	95 years	44 of 100 (Notable)
31 May 1986	Tower 2S, US	monthly high max	35.0 C (95.0 F)	0.6 C (1.1 F)	86 years	44 of 100 (Notable)
31 May 1986	Marathon, US	daily rain	36.8 mm (1.4 in)	16.5 mm (0.6 in)	72 years	44 of 100 (Notable)
31 May 1986	Salem AP (McNary Field), US	monthly high min	16.1 C (61.0 F)	1.1 C (2.0 F)	74 years	44 of 100 (Notable)
31 May 1986	Anaconda, US	daily high min	15.0 C (59.0 F)	5.0 C (9.0 F)	71 years	43 of 100 (Notable)
31 May 1986	Coshocton Ag Rsch STN, US	daily rain	59.4 mm (2.3 in)	44.2 mm (1.7 in)	0 years	43 of 100 (Notable)
31 May 1986	Muleshoe #1, US	daily rain	53.3 mm (2.1 in)	37.3 mm (1.5 in)	28 years	43 of 100 (Notable)
31 May 1986	Neisse Central, BR	daily rain	50.0 mm (2.0 in)	41.0 mm (1.6 in)	19 years	42 of 100 (Notable)
31 May 1986	Hohenpeissenberg, DE	daily low max	4.9 C (40.8 F)	1.2 C (2.2 F)	105 years	42 of 100 (Notable)
31 May 1986	Gorlitz, DE	daily low max	10.3 C (50.5 F)	1.0 C (1.8 F)	105 years	42 of 100 (Notable)
31 May 1986	Leipzig-Holzhausen, DE	daily low max	10.2 C (50.4 F)	1.4 C (2.5 F)	112 years	42 of 100 (Notable)
31 May 1986	Chemnitz, DE	daily low max	7.5 C (45.5 F)	2.8 C (5.0 F)	92 years	42 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 1986

Records set or tied on this calendar date in each year from 1811 to 1986. 1986 had 1,365 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 1986-05-31: 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	998
20 to 40	40
40 to 60	9
60 to 80	0
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1