Weather Records on 30 May 1986

1,264 weather records were set or tied worldwide on 30 May 1986. Highest significance: Motozintla (Smn), MX.

Key Facts for 30 May 1986

On 30 May 1986, 1,264 weather records were set or tied at long-record stations worldwide.
748 were record highs and 241 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 185 monthly and 1,076 daily.
Motozintla (Smn) set an all-time record daily precipitation of 99.8 mm (3.9 in) on 30 May 1986.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 434 records.

Record Map

1,264 stations

1,264 station records on 30 May 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Motozintla (Smn)	Mexico	Record daily precipitation	99.8 mm (3.9 in)	66 of 100 (Major)
Malpaso	Mexico	Record daily precipitation	192.3 mm (7.6 in)	62 of 100 (Major)
Bakerstown 3 WNW	United States	Record daily precipitation	88.9 mm (3.5 in)	58 of 100 (Notable)
Ostuta	Mexico	Record daily precipitation	279.4 mm (11.0 in)	55 of 100 (Notable)
Tatum	United States	Record daily precipitation	75.2 mm (3.0 in)	52 of 100 (Notable)
Cambridge	United States	Record high minimum temperature	23.9 C (75.0 F)	51 of 100 (Notable)
Prata	Brazil	Record daily precipitation	84.2 mm (3.3 in)	50 of 100 (Notable)
Lanzhou	China	Record daily precipitation	41.8 mm (1.6 in)	50 of 100 (Notable)
Nova Palmira	Brazil	Record daily precipitation	121.3 mm (4.8 in)	49 of 100 (Notable)
Mudanjiang	China	Record daily precipitation	37.5 mm (1.5 in)	47 of 100 (Notable)
Two Harbors	United States	Record high minimum temperature	15.6 C (60.1 F)	47 of 100 (Notable)
Hawthorne AP	United States	Record high minimum temperature	20.0 C (68.0 F)	47 of 100 (Notable)
Yerington	United States	Record high minimum temperature	20.6 C (69.1 F)	46 of 100 (Notable)
White Hall 1 E	United States	Record daily precipitation	70.4 mm (2.8 in)	45 of 100 (Notable)
Port Washington	United States	Record high minimum temperature	20.0 C (68.0 F)	45 of 100 (Notable)
El Dorado	Mexico	Record daily precipitation	113.8 mm (4.5 in)	44 of 100 (Notable)
Huajintlan	Mexico	Record low maximum temperature	22.8 C (73.0 F)	44 of 100 (Notable)
Marquette	United States	Record high maximum temperature	30.0 C (86.0 F)	44 of 100 (Notable)
Donnellson	United States	Record daily precipitation	63.5 mm (2.5 in)	43 of 100 (Notable)
Innsbruck	Austria	Record low maximum temperature	7.6 C (45.7 F)	42 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record low maximum temperature	8.0 C (46.4 F)	42 of 100 (Notable)
Villa de Chiapilla	Mexico	Record daily precipitation	59.9 mm (2.4 in)	42 of 100 (Notable)
Ignacio Lopez Rayon	Mexico	Record daily precipitation	99.8 mm (3.9 in)	42 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record low maximum temperature	-4.5 C (23.9 F)	42 of 100 (Notable)
Winton Pwr Plt	United States	Record high minimum temperature	20.0 C (68.0 F)	42 of 100 (Notable)
Austin #2	United States	Record high minimum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Virginia City	United States	Record high maximum temperature	31.1 C (88.0 F)	42 of 100 (Notable)
P-Ranch South Place	United States	Record high maximum temperature	33.9 C (93.0 F)	42 of 100 (Notable)
Ny City Cntrl Park	United States	Record high maximum temperature	34.4 C (93.9 F)	42 of 100 (Notable)
Salzburg	Austria	Record low maximum temperature	8.8 C (47.8 F)	41 of 100 (Notable)
Hohenpeissenberg	Germany	Record low maximum temperature	4.0 C (39.2 F)	41 of 100 (Notable)
Las Flores	Mexico	Record daily precipitation	142.5 mm (5.6 in)	41 of 100 (Notable)
Motozintla (Smn)	Mexico	Record low maximum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Presa Colorines (Cfe)	Mexico	Record daily precipitation	45.5 mm (1.8 in)	41 of 100 (Notable)
Waterville	United States	Record high minimum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Spokane Intl AP	United States	Record high maximum temperature	35.0 C (95.0 F)	41 of 100 (Notable)
Miyakejima	Japan	Record daily precipitation	122.5 mm (4.8 in)	40 of 100 (Notable)
Cedarville	United States	Record high minimum temperature	17.2 C (63.0 F)	40 of 100 (Notable)
Portola	United States	Record high minimum temperature	11.1 C (52.0 F)	40 of 100 (Notable)
Mimbres 4NNW	United States	Record daily precipitation	32.5 mm (1.3 in)	40 of 100 (Notable)
Vale	United States	Record high maximum temperature	38.9 C (102.0 F)	40 of 100 (Notable)
Midland 4 ENE	United States	Record daily precipitation	75.9 mm (3.0 in)	40 of 100 (Notable)
Port Isabel	United States	Record daily precipitation	74.7 mm (2.9 in)	40 of 100 (Notable)
Katsuura	Japan	Record daily precipitation	76.5 mm (3.0 in)	39 of 100 (Notable)
Tres Piedras	United States	Record low maximum temperature	8.3 C (46.9 F)	39 of 100 (Notable)
Lakeview 2 NNW	United States	Record high maximum temperature	34.4 C (93.9 F)	39 of 100 (Notable)
Mitchell 2 NW	United States	Record high minimum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Kukuihaele Hic 199	United States	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Lauchapan	Mexico	Record daily precipitation	105.9 mm (4.2 in)	38 of 100 (Notable)
Caldwell	United States	Record high maximum temperature	38.3 C (100.9 F)	38 of 100 (Notable)
Council	United States	Record high maximum temperature	36.7 C (98.1 F)	38 of 100 (Notable)
Cape May 2 NW	United States	Record high maximum temperature	33.3 C (91.9 F)	38 of 100 (Notable)
Lakeview 2 NNW	United States	Record high minimum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Colfax	United States	Record high minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Campina da Alegria	Brazil	Record daily precipitation	80.0 mm (3.1 in)	37 of 100 (Notable)
Hohenpeissenberg	Germany	Record low minimum temperature	0.4 C (32.7 F)	37 of 100 (Notable)
Villaflores (Smn)	Mexico	Record daily precipitation	67.3 mm (2.6 in)	37 of 100 (Notable)
Garden Valley	United States	Record high maximum temperature	35.6 C (96.1 F)	37 of 100 (Notable)
Grants Pass	United States	Record high maximum temperature	38.9 C (102.0 F)	37 of 100 (Notable)
Dayton 1 WSW	United States	Record high minimum temperature	16.7 C (62.1 F)	37 of 100 (Notable)

Counts by Type and Timescale

1,264 records

Records set or tied on 30 May 1986 by type: Highest daily maximum 417, Lowest daily maximum 186, Highest daily minimum 331, Lowest daily minimum 55, Heaviest daily rainfall 274, Deepest snow cover 1.

Records on 30 May 1986 by type
Record type	Records
Highest daily maximum	417
Lowest daily maximum	186
Highest daily minimum	331
Lowest daily minimum	55
Heaviest daily rainfall	274
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 30 May 1986 by timescale: all-time 3, monthly 185, daily 1,076.

How Much Records Were Beaten By

970 broken records

Margins by which the 970 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 171.4. Ties are not counted.

Top 20 by Significance

30 May 1986

Top 20 records on 30 May 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1986	Motozintla (Smn), MX	all-time rain	99.8 mm (3.9 in)	20.8 mm (0.8 in)	41 years	66 of 100 (Major)
30 May 1986	Malpaso, MX	monthly rain	192.3 mm (7.6 in)	98.3 mm (3.9 in)	30 years	62 of 100 (Major)
30 May 1986	Bakerstown 3 WNW, US	monthly rain	88.9 mm (3.5 in)	40.6 mm (1.6 in)	18 years	58 of 100 (Notable)
30 May 1986	Ostuta, MX	monthly rain	279.4 mm (11.0 in)	171.4 mm (6.7 in)	8 years	55 of 100 (Notable)
30 May 1986	Tatum, US	daily rain	75.2 mm (3.0 in)	52.8 mm (2.1 in)	28 years	52 of 100 (Notable)
30 May 1986	Cambridge, US	monthly high min	23.9 C (75.0 F)	6.1 C (11.0 F)	58 years	51 of 100 (Notable)
30 May 1986	Prata, BR	daily rain	84.2 mm (3.3 in)	64.1 mm (2.5 in)	25 years	50 of 100 (Notable)
30 May 1986	Lanzhou, CN	daily rain	41.8 mm (1.6 in)	30.1 mm (1.2 in)	25 years	50 of 100 (Notable)
30 May 1986	Nova Palmira, BR	monthly rain	121.3 mm (4.8 in)	33.4 mm (1.3 in)	43 years	49 of 100 (Notable)
30 May 1986	Mudanjiang, CN	daily rain	37.5 mm (1.5 in)	27.7 mm (1.1 in)	15 years	47 of 100 (Notable)
30 May 1986	Two Harbors, US	daily high min	15.6 C (60.1 F)	3.4 C (6.1 F)	90 years	47 of 100 (Notable)
30 May 1986	Hawthorne AP, US	daily high min	20.0 C (68.0 F)	3.3 C (5.9 F)	96 years	47 of 100 (Notable)
30 May 1986	Yerington, US	monthly high min	20.6 C (69.1 F)	3.4 C (6.1 F)	66 years	46 of 100 (Notable)
30 May 1986	White Hall 1 E, US	daily rain	70.4 mm (2.8 in)	23.7 mm (0.9 in)	56 years	45 of 100 (Notable)
30 May 1986	Port Washington, US	monthly high min	20.0 C (68.0 F)	0.6 C (1.1 F)	86 years	45 of 100 (Notable)
30 May 1986	El Dorado, MX	daily rain	113.8 mm (4.5 in)	86.6 mm (3.4 in)	4 years	44 of 100 (Notable)
30 May 1986	Huajintlan, MX	daily low max	22.8 C (73.0 F)	6.1 C (11.0 F)	56 years	44 of 100 (Notable)
30 May 1986	Marquette, US	daily high max	30.0 C (86.0 F)	3.3 C (5.9 F)	106 years	44 of 100 (Notable)
30 May 1986	Donnellson, US	daily rain	63.5 mm (2.5 in)	37.6 mm (1.5 in)	27 years	43 of 100 (Notable)
30 May 1986	Innsbruck, AT	daily low max	7.6 C (45.7 F)	1.4 C (2.5 F)	105 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

1818 to 1986

Records set or tied on this calendar date in each year from 1818 to 1986. 1986 had 1,264 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1986-05-30: 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 25	925
25 to 50	35
50 to 75	7
75 to 100	2
100 to 125	0
125 to 150	0
150 to 175	1