Weather Records on 12 May 1990

617 weather records were set or tied worldwide on 12 May 1990. Highest significance: Machilipatnam, IN.

Key Facts for 12 May 1990

On 12 May 1990, 617 weather records were set or tied at long-record stations worldwide.
205 were record highs and 137 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 21 monthly and 596 daily.
Machilipatnam set a daily record precipitation of 68.1 mm (2.7 in) on 12 May 1990.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 452 records.

Record Map

617 stations

617 station records on 12 May 1990 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1990: highest significance records shown on the map
Station	Country	Type	Value	Significance
Machilipatnam	India	Record daily precipitation	68.1 mm (2.7 in)	69 of 100 (Major)
Russell Springs	United States	Record daily precipitation	44.7 mm (1.8 in)	62 of 100 (Major)
Rockport	United States	Record daily precipitation	192.0 mm (7.6 in)	56 of 100 (Notable)
Neumunster	Germany	Record daily precipitation	31.8 mm (1.3 in)	52 of 100 (Notable)
Guanhaes	Brazil	Record daily precipitation	36.0 mm (1.4 in)	46 of 100 (Notable)
Evangelista de Souza	Brazil	Record daily precipitation	112.4 mm (4.4 in)	46 of 100 (Notable)
Oost Vlieland	Netherlands	Record daily precipitation	25.6 mm (1.0 in)	46 of 100 (Notable)
Rodovia Anchieta-Cota 400	Brazil	Record daily precipitation	119.8 mm (4.7 in)	45 of 100 (Notable)
Weerselo	Netherlands	Record daily precipitation	34.8 mm (1.4 in)	45 of 100 (Notable)
Carinda Post Office	Australia	Record daily precipitation	49.0 mm (1.9 in)	44 of 100 (Notable)
Baltijsk	Belarus	Record daily precipitation	32.7 mm (1.3 in)	44 of 100 (Notable)
Medora 1 S	United States	Record daily precipitation	77.7 mm (3.1 in)	44 of 100 (Notable)
Henderson	United States	Record daily precipitation	120.1 mm (4.7 in)	44 of 100 (Notable)
Casa Grande	Brazil	Record daily precipitation	74.2 mm (2.9 in)	43 of 100 (Notable)
Helgoland	Germany	Record daily precipitation	33.2 mm (1.3 in)	43 of 100 (Notable)
Warrenton 1 N	United States	Record daily precipitation	53.6 mm (2.1 in)	43 of 100 (Notable)
Urepetiro	Mexico	Record daily precipitation	29.5 mm (1.2 in)	42 of 100 (Notable)
Mattoon	United States	Record daily precipitation	49.0 mm (1.9 in)	42 of 100 (Notable)
Usina Itatinga	Brazil	Record daily precipitation	110.0 mm (4.3 in)	41 of 100 (Notable)
Langeoog	Germany	Record daily precipitation	28.9 mm (1.1 in)	41 of 100 (Notable)
Indianapolis	United States	Record daily precipitation	50.5 mm (2.0 in)	41 of 100 (Notable)
Mt Pulaski	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Cacalotenango	Mexico	Record daily precipitation	49.8 mm (2.0 in)	38 of 100 (Notable)
Perm	Russia	Record daily precipitation	25.0 mm (1.0 in)	38 of 100 (Notable)
Alta 1 NNW	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
Shreveport	United States	Record daily precipitation	99.3 mm (3.9 in)	37 of 100 (Notable)
Mourilyan Post Office	Australia	Record daily precipitation	101.0 mm (4.0 in)	35 of 100 (Notable)
Calhoun City	United States	Record daily precipitation	36.6 mm (1.4 in)	35 of 100 (Notable)
Utinga	Brazil	Record daily precipitation	46.7 mm (1.8 in)	34 of 100 (Routine)
Ahuehuepan	Mexico	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Rantoul	United States	Record daily precipitation	39.6 mm (1.6 in)	34 of 100 (Routine)
San Francisco	Mexico	Record daily precipitation	100.8 mm (4.0 in)	33 of 100 (Routine)
Sattahip	Thailand	Record daily precipitation	84.1 mm (3.3 in)	33 of 100 (Routine)
Eldorado Springs	United States	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Huamuxtitlan (Dge)	Mexico	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Falun	Sweden	Record low minimum temperature	-3.9 C (25.0 F)	32 of 100 (Routine)
Mt Morris 2W	United States	Record low minimum temperature	-4.4 C (24.1 F)	32 of 100 (Routine)
Olinala (Smn)	Mexico	Record daily precipitation	43.4 mm (1.7 in)	31 of 100 (Routine)
Chon Buri	Thailand	Record daily precipitation	72.9 mm (2.9 in)	31 of 100 (Routine)
Champaign 3S	United States	Record daily precipitation	46.0 mm (1.8 in)	31 of 100 (Routine)
Petropavlovskij Majak	Russia	Record high minimum temperature	3.3 C (37.9 F)	30 of 100 (Routine)
Libby 1 NE Rs	United States	Record low maximum temperature	11.7 C (53.1 F)	30 of 100 (Routine)
Caete	Brazil	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Represa Itatinga	Brazil	Record daily precipitation	179.1 mm (7.1 in)	29 of 100 (Routine)
Armeria	Mexico	Record high maximum temperature	40.0 C (104.0 F)	29 of 100 (Routine)
Chillicothe 2S	United States	Record daily precipitation	26.9 mm (1.1 in)	29 of 100 (Routine)
Eldon	United States	Record daily precipitation	30.5 mm (1.2 in)	29 of 100 (Routine)
Red Bluff Crossing	United States	Record daily precipitation	58.4 mm (2.3 in)	29 of 100 (Routine)
Cacaloapan	Mexico	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Edina	United States	Record daily precipitation	30.2 mm (1.2 in)	28 of 100 (Routine)
Wasola 5N	United States	Record daily precipitation	41.7 mm (1.6 in)	28 of 100 (Routine)
Mount Olive	Australia	Record daily precipitation	40.0 mm (1.6 in)	27 of 100 (Routine)
Tully Sugar Mill	Australia	Record daily precipitation	77.0 mm (3.0 in)	27 of 100 (Routine)
Cagliari	Italy	Record daily precipitation	25.6 mm (1.0 in)	27 of 100 (Routine)
Carlinville	United States	Record daily precipitation	61.2 mm (2.4 in)	27 of 100 (Routine)
Bainbridge 2 E	United States	Record low maximum temperature	7.2 C (45.0 F)	27 of 100 (Routine)
Athens	United States	Record daily precipitation	76.5 mm (3.0 in)	27 of 100 (Routine)
Monroe Rgnl AP	United States	Record daily precipitation	74.7 mm (2.9 in)	27 of 100 (Routine)
Erbogacen	Russia	Record high minimum temperature	8.9 C (48.0 F)	26 of 100 (Routine)
Effingham	United States	Record daily precipitation	32.3 mm (1.3 in)	26 of 100 (Routine)

Counts by Type and Timescale

617 records

Records set or tied on 12 May 1990 by type: Highest daily maximum 72, Lowest daily maximum 51, Highest daily minimum 133, Lowest daily minimum 86, Heaviest daily rainfall 271, Heaviest daily snowfall 3, Deepest snow cover 1.

Records on 12 May 1990 by type
Record type	Records
Highest daily maximum	72
Lowest daily maximum	51
Highest daily minimum	133
Lowest daily minimum	86
Heaviest daily rainfall	271
Heaviest daily snowfall	3
Deepest snow cover	1

Records on 12 May 1990 by timescale: all-time 0, monthly 21, daily 596.

How Much Records Were Beaten By

510 broken records

Margins by which the 510 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 84.7. Ties are not counted.

Top 20 by Significance

12 May 1990

Top 20 records on 12 May 1990 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1990	Machilipatnam, IN	daily rain	68.1 mm (2.7 in)	54.9 mm (2.2 in)	84 years	69 of 100 (Major)
12 May 1990	Russell Springs, US	daily rain	44.7 mm (1.8 in)	38.9 mm (1.5 in)	73 years	62 of 100 (Major)
12 May 1990	Rockport, US	monthly rain	192.0 mm (7.6 in)	63.0 mm (2.5 in)	41 years	56 of 100 (Notable)
12 May 1990	Neumunster, DE	daily rain	31.8 mm (1.3 in)	15.4 mm (0.6 in)	48 years	52 of 100 (Notable)
12 May 1990	Guanhaes, BR	daily rain	36.0 mm (1.4 in)	26.8 mm (1.1 in)	32 years	46 of 100 (Notable)
12 May 1990	Evangelista de Souza, BR	daily rain	112.4 mm (4.4 in)	63.8 mm (2.5 in)	5 years	46 of 100 (Notable)
12 May 1990	Oost Vlieland, NL	daily rain	25.6 mm (1.0 in)	15.7 mm (0.6 in)	17 years	46 of 100 (Notable)
12 May 1990	Rodovia Anchieta-Cota 400, BR	daily rain	119.8 mm (4.7 in)	84.7 mm (3.3 in)	13 years	45 of 100 (Notable)
12 May 1990	Weerselo, NL	daily rain	34.8 mm (1.4 in)	20.2 mm (0.8 in)	4 years	45 of 100 (Notable)
12 May 1990	Carinda Post Office, AU	daily rain	49.0 mm (1.9 in)	20.6 mm (0.8 in)	59 years	44 of 100 (Notable)
12 May 1990	Baltijsk, BY	daily rain	32.7 mm (1.3 in)	23.7 mm (0.9 in)	4 years	44 of 100 (Notable)
12 May 1990	Medora 1 S, US	daily rain	77.7 mm (3.1 in)	44.7 mm (1.8 in)	12 years	44 of 100 (Notable)
12 May 1990	Henderson, US	daily rain	120.1 mm (4.7 in)	51.8 mm (2.0 in)	41 years	44 of 100 (Notable)
12 May 1990	Casa Grande, BR	daily rain	74.2 mm (2.9 in)	32.1 mm (1.3 in)	44 years	43 of 100 (Notable)
12 May 1990	Helgoland, DE	daily rain	33.2 mm (1.3 in)	20.4 mm (0.8 in)	0 years	43 of 100 (Notable)
12 May 1990	Warrenton 1 N, US	daily rain	53.6 mm (2.1 in)	21.8 mm (0.9 in)	56 years	43 of 100 (Notable)
12 May 1990	Urepetiro, MX	daily rain	29.5 mm (1.2 in)	22.9 mm (0.9 in)	33 years	42 of 100 (Notable)
12 May 1990	Mattoon, US	daily rain	49.0 mm (1.9 in)	30.5 mm (1.2 in)	27 years	42 of 100 (Notable)
12 May 1990	Usina Itatinga, BR	daily rain	110.0 mm (4.3 in)	52.1 mm (2.1 in)	45 years	41 of 100 (Notable)
12 May 1990	Langeoog, DE	daily rain	28.9 mm (1.1 in)	16.6 mm (0.7 in)	3 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

1814 to 1990

Records set or tied on this calendar date in each year from 1814 to 1990. 1990 had 617 records.

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

Records on 05-12 in each year
Year	Records
1814	2
1823	1
1825	1
1827	1
1834	1
1837	1
1838	1
1845	1
1847	1
1848	1
1849	2
1851	1
1855	2
1860	2
1862	2
1863	1
1867	1
1868	1
1872	2
1874	1
1877	1
1878	1
1879	1
1881	4
1882	5
1884	3
1885	2
1886	3
1887	1
1888	1
1889	1
1890	1
1891	4
1894	1
1895	1
1896	1
1897	7
1898	3
1900	3
1901	6
1902	5
1903	7
1904	11
1905	10
1906	20
1907	53
1908	12
1909	4
1910	9
1911	37
1912	46
1913	6
1914	36
1915	50
1916	42
1917	54
1918	113
1919	42
1920	19
1921	64
1922	43
1923	109
1924	245
1925	275
1926	121
1927	167
1928	192
1929	172
1930	500
1931	350
1932	199
1933	476
1934	293
1935	404
1936	329
1937	214
1938	394
1939	233
1940	440
1941	568
1942	418
1943	803
1944	368
1945	389
1946	653
1947	286
1948	390
1949	414
1950	283
1951	427
1952	711
1953	891
1954	305
1955	265
1956	1,568
1957	454
1958	714
1959	740
1960	1,583
1961	381
1962	713
1963	777
1964	401
1965	196
1966	909
1967	810
1968	890
1969	506
1970	698
1971	668
1972	641
1973	393
1974	702
1975	418
1976	541
1977	855
1978	802
1979	763
1980	684
1981	855
1982	763
1983	1,281
1984	887
1985	1,199
1986	473
1987	1,295
1988	619
1989	856
1990	617
1991	1,177
1992	1,022
1993	1,208
1994	738
1995	1,190
1996	1,420
1997	921
1998	1,576
1999	881
2000	1,486
2001	1,015
2002	1,027
2003	861
2004	1,054
2005	1,369
2006	797
2007	630
2008	858
2009	687
2010	1,250
2011	1,119
2012	660
2013	689
2014	949
2015	958
2016	421
2017	529
2018	819
2019	784
2020	1,338
2021	712
2022	1,930
2023	429
2024	447
2025	940
2026	1,110

Download the Data

Data for records on 1990-05-12: 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	466
20 to 40	34
40 to 60	7
60 to 80	2
80 to 100	1