Weather Records on 12 May 1973

393 weather records were set or tied worldwide on 12 May 1973. Highest significance: Tres Irmaos, BR.

Key Facts for 12 May 1973

On 12 May 1973, 393 weather records were set or tied at long-record stations worldwide.
124 were record highs and 59 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 384 daily.
Tres Irmaos set a monthly record daily precipitation of 73.8 mm (2.9 in) on 12 May 1973.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 453 records.

Record Map

393 stations

393 station records on 12 May 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tres Irmaos	Brazil	Record daily precipitation	73.8 mm (2.9 in)	55 of 100 (Notable)
San Andres	Mexico	Record daily precipitation	121.9 mm (4.8 in)	55 of 100 (Notable)
Atzalan	Mexico	Record daily precipitation	111.8 mm (4.4 in)	52 of 100 (Notable)
Cataguases	Brazil	Record daily precipitation	60.2 mm (2.4 in)	50 of 100 (Notable)
Vitebsk	Belarus	Record daily precipitation	30.6 mm (1.2 in)	45 of 100 (Notable)
Sand I Ryfylke II	Norway	Record daily precipitation	44.2 mm (1.7 in)	45 of 100 (Notable)
Matias Romero (Smn)	Mexico	Record daily precipitation	89.9 mm (3.5 in)	44 of 100 (Notable)
Conselheiro Paulino	Brazil	Record daily precipitation	40.1 mm (1.6 in)	43 of 100 (Notable)
Caraubas (Caraibeiras)	Brazil	Record daily precipitation	38.3 mm (1.5 in)	42 of 100 (Notable)
Hovlandsdal	Norway	Record daily precipitation	77.2 mm (3.0 in)	41 of 100 (Notable)
Carandai	Brazil	Record daily precipitation	38.2 mm (1.5 in)	37 of 100 (Notable)
Itaperuna	Brazil	Record daily precipitation	27.0 mm (1.1 in)	37 of 100 (Notable)
Araripe	Brazil	Record daily precipitation	52.0 mm (2.0 in)	37 of 100 (Notable)
San Felipe Orizatlan (Smn)	Mexico	Record daily precipitation	179.8 mm (7.1 in)	36 of 100 (Notable)
Danevang 1 W	United States	Record daily precipitation	127.0 mm (5.0 in)	35 of 100 (Notable)
Aldeia	Brazil	Record daily precipitation	32.2 mm (1.3 in)	34 of 100 (Routine)
Rio da Cidade	Brazil	Record daily precipitation	34.2 mm (1.3 in)	34 of 100 (Routine)
Cardoso Moreira	Brazil	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Charters Towers Post Office	Australia	Record high maximum temperature	31.7 C (89.1 F)	32 of 100 (Routine)
Sao Fidelis (Pcd)	Brazil	Record daily precipitation	37.8 mm (1.5 in)	32 of 100 (Routine)
Santa Rita Do Jacutinga	Brazil	Record daily precipitation	40.0 mm (1.6 in)	32 of 100 (Routine)
Mae Dagua de Dentro	Brazil	Record daily precipitation	59.3 mm (2.3 in)	32 of 100 (Routine)
Haileybury	Canada	Record low minimum temperature	-5.6 C (21.9 F)	32 of 100 (Routine)
Grenada	United States	Record daily precipitation	46.2 mm (1.8 in)	32 of 100 (Routine)
Bananal (Pcd)	Brazil	Record daily precipitation	41.4 mm (1.6 in)	31 of 100 (Routine)
North Bay	Canada	Record low maximum temperature	7.2 C (45.0 F)	31 of 100 (Routine)
Villaflores (Smn)	Mexico	Record low maximum temperature	26.7 C (80.1 F)	31 of 100 (Routine)
Brisbane Regional Office	Australia	Record high maximum temperature	29.5 C (85.1 F)	30 of 100 (Routine)
Huamuxtitlan (Smn)	Mexico	Record daily precipitation	32.8 mm (1.3 in)	30 of 100 (Routine)
Kid Valley	United States	Record high minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Jaboticatubas	Brazil	Record daily precipitation	27.6 mm (1.1 in)	29 of 100 (Routine)
Misantla	Mexico	Record daily precipitation	90.4 mm (3.6 in)	29 of 100 (Routine)
Hundseid I Vikedal	Norway	Record daily precipitation	45.0 mm (1.8 in)	29 of 100 (Routine)
Bom Jardim de Minas	Brazil	Record daily precipitation	26.0 mm (1.0 in)	28 of 100 (Routine)
Agua Soca	Brazil	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Madison	United States	Record low maximum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Weslaco	United States	Record daily precipitation	68.6 mm (2.7 in)	27 of 100 (Routine)
Montemorelos	Mexico	Record daily precipitation	36.3 mm (1.4 in)	26 of 100 (Routine)
Roldal	Norway	Record daily precipitation	25.0 mm (1.0 in)	26 of 100 (Routine)
Dongara	Australia	Record daily precipitation	26.9 mm (1.1 in)	25 of 100 (Routine)
Fazenda Campo Grande	Brazil	Record daily precipitation	32.0 mm (1.3 in)	25 of 100 (Routine)
Ponte Do Costa	Brazil	Record daily precipitation	34.6 mm (1.4 in)	25 of 100 (Routine)
Etne	Norway	Record daily precipitation	29.9 mm (1.2 in)	25 of 100 (Routine)
Ciudad Hidalgo (Smn)	Mexico	Record daily precipitation	27.4 mm (1.1 in)	24 of 100 (Routine)
Huauchinango	Mexico	Record daily precipitation	50.8 mm (2.0 in)	24 of 100 (Routine)
Sviland	Norway	Record daily precipitation	27.0 mm (1.1 in)	24 of 100 (Routine)
Astrakan	Russia	Record high maximum temperature	32.0 C (89.6 F)	24 of 100 (Routine)
Ponte Do Souza	Brazil	Record daily precipitation	25.2 mm (1.0 in)	23 of 100 (Routine)
Brooks Ahrc	Canada	Record low minimum temperature	-3.9 C (25.0 F)	23 of 100 (Routine)
Apatzingan (Smn)	Mexico	Record high minimum temperature	32.2 C (90.0 F)	23 of 100 (Routine)
Botnen I Forde	Norway	Record daily precipitation	38.6 mm (1.5 in)	23 of 100 (Routine)
Bom Jardim	Brazil	Record daily precipitation	31.2 mm (1.2 in)	22 of 100 (Routine)
Taboas	Brazil	Record daily precipitation	43.2 mm (1.7 in)	22 of 100 (Routine)
Downieville	United States	Record high maximum temperature	34.4 C (93.9 F)	22 of 100 (Routine)
Carrollton	United States	Record daily precipitation	59.2 mm (2.3 in)	22 of 100 (Routine)
Illalangi	Australia	Record daily precipitation	31.8 mm (1.3 in)	21 of 100 (Routine)
Bom Jesus Do Galho	Brazil	Record daily precipitation	29.4 mm (1.2 in)	21 of 100 (Routine)
Ville Marie	Canada	Record low maximum temperature	5.0 C (41.0 F)	21 of 100 (Routine)
Teziutlan	Mexico	Record daily precipitation	27.4 mm (1.1 in)	21 of 100 (Routine)
Ohotsk	Russia	Record high maximum temperature	16.2 C (61.2 F)	21 of 100 (Routine)

Counts by Type and Timescale

393 records

Records set or tied on 12 May 1973 by type: Highest daily maximum 78, Lowest daily maximum 34, Highest daily minimum 46, Lowest daily minimum 25, Heaviest daily rainfall 207, Heaviest daily snowfall 2, Deepest snow cover 1.

Records on 12 May 1973 by type
Record type	Records
Highest daily maximum	78
Lowest daily maximum	34
Highest daily minimum	46
Lowest daily minimum	25
Heaviest daily rainfall	207
Heaviest daily snowfall	2
Deepest snow cover	1

Records on 12 May 1973 by timescale: all-time 0, monthly 9, daily 384.

How Much Records Were Beaten By

322 broken records

Margins by which the 322 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 100.0. Ties are not counted.

Top 20 by Significance

12 May 1973

Top 20 records on 12 May 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1973	Tres Irmaos, BR	monthly rain	73.8 mm (2.9 in)	30.8 mm (1.2 in)	18 years	55 of 100 (Notable)
12 May 1973	San Andres, MX	monthly rain	121.9 mm (4.8 in)	46.0 mm (1.8 in)	23 years	55 of 100 (Notable)
12 May 1973	Atzalan, MX	daily rain	111.8 mm (4.4 in)	85.4 mm (3.4 in)	24 years	52 of 100 (Notable)
12 May 1973	Cataguases, BR	daily rain	60.2 mm (2.4 in)	56.2 mm (2.2 in)	24 years	50 of 100 (Notable)
12 May 1973	Vitebsk, BY	daily rain	30.6 mm (1.2 in)	18.6 mm (0.7 in)	22 years	45 of 100 (Notable)
12 May 1973	Sand I Ryfylke II, NO	daily rain	44.2 mm (1.7 in)	24.2 mm (1.0 in)	30 years	45 of 100 (Notable)
12 May 1973	Matias Romero (Smn), MX	monthly rain	89.9 mm (3.5 in)	30.0 mm (1.2 in)	22 years	44 of 100 (Notable)
12 May 1973	Conselheiro Paulino, BR	daily rain	40.1 mm (1.6 in)	25.7 mm (1.0 in)	24 years	43 of 100 (Notable)
12 May 1973	Caraubas (Caraibeiras), BR	daily rain	38.3 mm (1.5 in)	27.9 mm (1.1 in)	39 years	42 of 100 (Notable)
12 May 1973	Hovlandsdal, NO	daily rain	77.2 mm (3.0 in)	26.3 mm (1.0 in)	42 years	41 of 100 (Notable)
12 May 1973	Carandai, BR	daily rain	38.2 mm (1.5 in)	26.2 mm (1.0 in)	8 years	37 of 100 (Notable)
12 May 1973	Itaperuna, BR	daily rain	27.0 mm (1.1 in)	20.8 mm (0.8 in)	28 years	37 of 100 (Notable)
12 May 1973	Araripe, BR	monthly rain	52.0 mm (2.0 in)	6.2 mm (0.24 in)	55 years	37 of 100 (Notable)
12 May 1973	San Felipe Orizatlan (Smn), MX	daily rain	179.8 mm (7.1 in)	100.0 mm (3.9 in)	2 years	36 of 100 (Notable)
12 May 1973	Danevang 1 W, US	daily rain	127.0 mm (5.0 in)	61.2 mm (2.4 in)	4 years	35 of 100 (Notable)
12 May 1973	Aldeia, BR	daily rain	32.2 mm (1.3 in)	21.4 mm (0.8 in)	12 years	34 of 100 (Routine)
12 May 1973	Rio da Cidade, BR	daily rain	34.2 mm (1.3 in)	19.2 mm (0.8 in)	26 years	34 of 100 (Routine)
12 May 1973	Cardoso Moreira, BR	daily rain	30.5 mm (1.2 in)	20.5 mm (0.8 in)	11 years	33 of 100 (Routine)
12 May 1973	Charters Towers Post Office, AU	daily high max	31.7 C (89.1 F)	0.6 C (1.1 F)	73 years	32 of 100 (Routine)
12 May 1973	Sao Fidelis (Pcd), BR	daily rain	37.8 mm (1.5 in)	24.8 mm (1.0 in)	4 years	32 of 100 (Routine)

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 1973

Records set or tied on this calendar date in each year from 1814 to 1973. 1973 had 393 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 1973-05-12: 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	297
20 to 40	19
40 to 60	3
60 to 80	1
80 to 100	2