Weather Records on 12 May 1979

763 weather records were set or tied worldwide on 12 May 1979. Highest significance: Sao Jose de Mipibu, BR.

Key Facts for 12 May 1979

On 12 May 1979, 763 weather records were set or tied at long-record stations worldwide.
318 were record highs and 284 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 25 monthly and 738 daily.
Sao Jose de Mipibu set a daily record precipitation of 86.3 mm (3.4 in) on 12 May 1979.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 451 records.

Record Map

763 stations

763 station records on 12 May 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sao Jose de Mipibu	Brazil	Record daily precipitation	86.3 mm (3.4 in)	51 of 100 (Notable)
Menard	United States	Record low minimum temperature	0.0 C (32.0 F)	47 of 100 (Notable)
Kakinada	India	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Madras/Minambakkam	India	Record daily precipitation	80.0 mm (3.1 in)	45 of 100 (Notable)
Sholapur	India	Record daily precipitation	45.0 mm (1.8 in)	44 of 100 (Notable)
Ensenada	Mexico	Record high maximum temperature	36.0 C (96.8 F)	43 of 100 (Notable)
Bastrop	United States	Record high minimum temperature	26.1 C (79.0 F)	41 of 100 (Notable)
Touros	Brazil	Record daily precipitation	78.4 mm (3.1 in)	40 of 100 (Notable)
Toledo Blade	United States	Record high maximum temperature	33.3 C (91.9 F)	40 of 100 (Notable)
Healdton 3 E	United States	Record low minimum temperature	0.0 C (32.0 F)	40 of 100 (Notable)
Junction 4SSW	United States	Record low minimum temperature	-0.6 C (30.9 F)	40 of 100 (Notable)
Sonnblick	Austria	Record daily precipitation	43.5 mm (1.7 in)	39 of 100 (Notable)
Duncan	United States	Record low minimum temperature	-3.3 C (26.1 F)	39 of 100 (Notable)
Albert Lea 3SE	United States	Record low minimum temperature	-4.4 C (24.1 F)	39 of 100 (Notable)
San Saba	United States	Record low minimum temperature	3.3 C (37.9 F)	38 of 100 (Notable)
Hot Springs	United States	Record daily precipitation	65.0 mm (2.6 in)	38 of 100 (Notable)
San Saba	United States	Record low maximum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Agua Branca (Imoroti)	Brazil	Record daily precipitation	64.0 mm (2.5 in)	36 of 100 (Notable)
Port Stanley	Canada	Record high minimum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Arcade	United States	Record high minimum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Churchill A	Canada	Record daily snowfall	16.2 cm (6.4 in)	35 of 100 (Notable)
Marble Hill	United States	Record low maximum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Spencer	United States	Record high maximum temperature	35.6 C (96.1 F)	35 of 100 (Notable)
Orbost (Comparison)	Australia	Record daily precipitation	34.0 mm (1.3 in)	34 of 100 (Routine)
Samaria	Mexico	Record daily precipitation	123.2 mm (4.9 in)	34 of 100 (Routine)
Rougemont	United States	Record daily precipitation	72.1 mm (2.8 in)	34 of 100 (Routine)
Brackettville	United States	Record low minimum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Lampasas	United States	Record low maximum temperature	14.4 C (57.9 F)	34 of 100 (Routine)
Buena Vista	United States	Record daily precipitation	40.6 mm (1.6 in)	34 of 100 (Routine)
Manassas 3 NW	United States	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Medford	United States	Record low maximum temperature	7.2 C (45.0 F)	34 of 100 (Routine)
Lakeland Linder Rgnl AP	United States	Record daily precipitation	63.5 mm (2.5 in)	34 of 100 (Routine)
Ludington 4 SE	United States	Record high maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Norwalk Wwtp	United States	Record high maximum temperature	31.1 C (88.0 F)	33 of 100 (Routine)
Barcelona -Fabra Observatory	Spain	Record high maximum temperature	29.3 C (84.7 F)	32 of 100 (Routine)
Pocahontas 1	United States	Record low maximum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Ames	United States	Record snow depth	25.4 cm (10.0 in)	32 of 100 (Routine)
Sparta 1 W	United States	Record low maximum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Shelbyville Sewage Plt	United States	Record high maximum temperature	30.0 C (86.0 F)	32 of 100 (Routine)
Stillwater 2 W	United States	Record low maximum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Reriutaba	Brazil	Record daily precipitation	83.0 mm (3.3 in)	31 of 100 (Routine)
Palestina (Smn)	Mexico	Record low minimum temperature	8.3 C (46.9 F)	31 of 100 (Routine)
Tortosa - Observatorio del Ebr	Spain	Record high maximum temperature	32.6 C (90.7 F)	31 of 100 (Routine)
Phila 1 WSW	United States	Record daily precipitation	90.7 mm (3.6 in)	31 of 100 (Routine)
Bolivar	United States	Record high maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Ithaca Cornell UNIV	United States	Record high minimum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
Port Isabel	United States	Record low minimum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Tambo Crossing	Australia	Record daily precipitation	43.0 mm (1.7 in)	30 of 100 (Routine)
Barrage Gouin	Canada	Record daily precipitation	32.3 mm (1.3 in)	30 of 100 (Routine)
Perpignan	France	Record high minimum temperature	19.0 C (66.2 F)	30 of 100 (Routine)
Colonia Guerrero	Mexico	Record high maximum temperature	28.9 C (84.0 F)	30 of 100 (Routine)
Antonio Escobedo (Smn)	Mexico	Record high maximum temperature	38.9 C (102.0 F)	30 of 100 (Routine)
Pueblo Nuevo	Mexico	Record daily precipitation	67.3 mm (2.6 in)	30 of 100 (Routine)
Coimbra	Portugal	Record high maximum temperature	35.1 C (95.2 F)	30 of 100 (Routine)
Avalon Pleasure Pier	United States	Record high maximum temperature	31.1 C (88.0 F)	30 of 100 (Routine)
Angelica	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Warren	United States	Record high maximum temperature	31.7 C (89.1 F)	30 of 100 (Routine)
Santa Fe del Rio	Mexico	Record low maximum temperature	21.7 C (71.1 F)	29 of 100 (Routine)
U C L A	United States	Record high minimum temperature	20.6 C (69.1 F)	29 of 100 (Routine)
Wanakena Rngr School	United States	Record high minimum temperature	16.1 C (61.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

763 records

Records set or tied on 12 May 1979 by type: Highest daily maximum 159, Lowest daily maximum 104, Highest daily minimum 159, Lowest daily minimum 180, Heaviest daily rainfall 153, Heaviest daily snowfall 5, Deepest snow cover 3.

Records on 12 May 1979 by type
Record type	Records
Highest daily maximum	159
Lowest daily maximum	104
Highest daily minimum	159
Lowest daily minimum	180
Heaviest daily rainfall	153
Heaviest daily snowfall	5
Deepest snow cover	3

Records on 12 May 1979 by timescale: all-time 0, monthly 25, daily 738.

How Much Records Were Beaten By

589 broken records

Margins by which the 589 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.0. Ties are not counted.

Top 20 by Significance

12 May 1979

Top 20 records on 12 May 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1979	Sao Jose de Mipibu, BR	daily rain	86.3 mm (3.4 in)	54.3 mm (2.1 in)	42 years	51 of 100 (Notable)
12 May 1979	Menard, US	daily low min	0.0 C (32.0 F)	8.9 C (16.0 F)	64 years	47 of 100 (Notable)
12 May 1979	Kakinada, IN	daily rain	45.0 mm (1.8 in)	37.9 mm (1.5 in)	57 years	45 of 100 (Notable)
12 May 1979	Madras/Minambakkam, IN	daily rain	80.0 mm (3.1 in)	70.3 mm (2.8 in)	61 years	45 of 100 (Notable)
12 May 1979	Sholapur, IN	daily rain	45.0 mm (1.8 in)	33.1 mm (1.3 in)	21 years	44 of 100 (Notable)
12 May 1979	Ensenada, MX	daily high max	36.0 C (96.8 F)	10.0 C (18.0 F)	25 years	43 of 100 (Notable)
12 May 1979	Bastrop, US	monthly high min	26.1 C (79.0 F)	2.2 C (4.0 F)	57 years	41 of 100 (Notable)
12 May 1979	Touros, BR	daily rain	78.4 mm (3.1 in)	50.1 mm (2.0 in)	20 years	40 of 100 (Notable)
12 May 1979	Toledo Blade, US	daily high max	33.3 C (91.9 F)	1.1 C (2.0 F)	97 years	40 of 100 (Notable)
12 May 1979	Healdton 3 E, US	daily low min	0.0 C (32.0 F)	3.3 C (5.9 F)	83 years	40 of 100 (Notable)
12 May 1979	Junction 4SSW, US	monthly low min	-0.6 C (30.9 F)	1.7 C (3.1 F)	62 years	40 of 100 (Notable)
12 May 1979	Sonnblick, AT	daily rain	43.5 mm (1.7 in)	16.3 mm (0.6 in)	45 years	39 of 100 (Notable)
12 May 1979	Duncan, US	daily low min	-3.3 C (26.1 F)	4.4 C (7.9 F)	73 years	39 of 100 (Notable)
12 May 1979	Albert Lea 3SE, US	daily low min	-4.4 C (24.1 F)	3.3 C (5.9 F)	83 years	39 of 100 (Notable)
12 May 1979	San Saba, US	daily low min	3.3 C (37.9 F)	4.5 C (8.1 F)	66 years	38 of 100 (Notable)
12 May 1979	Hot Springs, US	daily rain	65.0 mm (2.6 in)	28.2 mm (1.1 in)	8 years	38 of 100 (Notable)
12 May 1979	San Saba, US	daily low max	15.0 C (59.0 F)	5.0 C (9.0 F)	61 years	37 of 100 (Notable)
12 May 1979	Agua Branca (Imoroti), BR	daily rain	64.0 mm (2.5 in)	52.0 mm (2.0 in)	0 years	36 of 100 (Notable)
12 May 1979	Port Stanley, CA	daily high min	15.0 C (59.0 F)	1.1 C (2.0 F)	82 years	36 of 100 (Notable)
12 May 1979	Arcade, US	daily high min	15.6 C (60.1 F)	2.3 C (4.1 F)	82 years	36 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 1979

Records set or tied on this calendar date in each year from 1814 to 1979. 1979 had 763 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 1979-05-12: 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	554
20 to 40	23
40 to 60	8
60 to 80	2
80 to 100	0
100 to 120	0
120 to 140	2