Weather Records on 12 May 1964

401 weather records were set or tied worldwide on 12 May 1964. Highest significance: Dehri, IN.

Key Facts for 12 May 1964

On 12 May 1964, 401 weather records were set or tied at long-record stations worldwide.
52 were record highs and 86 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 396 daily.
Dehri set a daily record precipitation of 69.2 mm (2.7 in) on 12 May 1964.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 453 records.

Record Map

401 stations

401 station records on 12 May 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dehri	India	Record daily precipitation	69.2 mm (2.7 in)	60 of 100 (Major)
Siwan	India	Record daily precipitation	62.8 mm (2.5 in)	58 of 100 (Notable)
Nikolskoye/Beringa Ostrov	Russia	Record daily precipitation	27.0 mm (1.1 in)	52 of 100 (Notable)
Murrurundi Post Office	Australia	Record daily precipitation	43.9 mm (1.7 in)	50 of 100 (Notable)
Kerakat	India	Record daily precipitation	40.6 mm (1.6 in)	48 of 100 (Notable)
Aberdeen (Main Rd)	Australia	Record daily precipitation	31.0 mm (1.2 in)	47 of 100 (Notable)
Muhammadabad	India	Record daily precipitation	42.2 mm (1.7 in)	47 of 100 (Notable)
Ambala Obsy	India	Record daily precipitation	27.2 mm (1.1 in)	46 of 100 (Notable)
Varanasi	India	Record daily precipitation	30.2 mm (1.2 in)	46 of 100 (Notable)
Denman (Palace Street)	Australia	Record daily precipitation	29.0 mm (1.1 in)	43 of 100 (Notable)
Nimach	India	Record daily precipitation	25.4 mm (1.0 in)	43 of 100 (Notable)
Waupaca	United States	Record daily precipitation	44.7 mm (1.8 in)	43 of 100 (Notable)
Pio IX (Patrocinio)	Brazil	Record daily precipitation	35.8 mm (1.4 in)	42 of 100 (Notable)
Banswara	India	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Zamana	India	Record daily precipitation	39.6 mm (1.6 in)	42 of 100 (Notable)
Big Creek	Canada	Record daily snowfall	5.6 cm (2.2 in)	41 of 100 (Notable)
Ketchikan AP	United States	Record daily snowfall	11.4 cm (4.5 in)	41 of 100 (Notable)
Wingen (Murrulla)	Australia	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Dasna	India	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Muscle Creek (Clendinning)	Australia	Record daily precipitation	42.4 mm (1.7 in)	38 of 100 (Notable)
Landsdown	India	Record daily precipitation	55.4 mm (2.2 in)	38 of 100 (Notable)
Jaunpur	India	Record daily precipitation	39.9 mm (1.6 in)	38 of 100 (Notable)
Albert Lea 3SE	United States	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Salimpur	India	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Muswellbrook (Lower Hill St)	Australia	Record daily precipitation	26.4 mm (1.0 in)	36 of 100 (Notable)
Chainpur	India	Record daily precipitation	27.4 mm (1.1 in)	36 of 100 (Notable)
Marhaura(Amnar)	India	Record daily precipitation	63.6 mm (2.5 in)	36 of 100 (Notable)
Chandauli	India	Record daily precipitation	47.2 mm (1.9 in)	36 of 100 (Notable)
Rouchel Brook	Australia	Record daily precipitation	31.5 mm (1.2 in)	35 of 100 (Notable)
Aska	India	Record daily precipitation	60.5 mm (2.4 in)	35 of 100 (Notable)
Kelvin (Carellan)	Australia	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Goorangoola	Australia	Record daily precipitation	44.5 mm (1.8 in)	34 of 100 (Routine)
Scone (Philip Street)	Australia	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Mirannie	Australia	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Buxar	India	Record daily precipitation	42.0 mm (1.7 in)	31 of 100 (Routine)
Dalby Post Office	Australia	Record low maximum temperature	12.3 C (54.1 F)	30 of 100 (Routine)
Jerrys Plains Post Office	Australia	Record daily precipitation	35.8 mm (1.4 in)	30 of 100 (Routine)
Robertsganj	India	Record daily precipitation	28.5 mm (1.1 in)	30 of 100 (Routine)
Tobolsk	Russia	Record low minimum temperature	-6.7 C (19.9 F)	30 of 100 (Routine)
Farmington 3NW	United States	Record daily precipitation	48.3 mm (1.9 in)	30 of 100 (Routine)
Amery	United States	Record daily precipitation	34.5 mm (1.4 in)	30 of 100 (Routine)
Port Hastings	Canada	Record low maximum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Hawarden	United States	Record daily precipitation	45.7 mm (1.8 in)	29 of 100 (Routine)
Sioux Ctr 2 SE	United States	Record daily precipitation	38.9 mm (1.5 in)	29 of 100 (Routine)
St Peter	United States	Record daily precipitation	26.4 mm (1.0 in)	29 of 100 (Routine)
Concord	United States	Record high minimum temperature	19.4 C (66.9 F)	29 of 100 (Routine)
Centerville 6 SE	United States	Record daily precipitation	29.2 mm (1.1 in)	29 of 100 (Routine)
Goondiwindi Post Office	Australia	Record low maximum temperature	11.1 C (52.0 F)	28 of 100 (Routine)
Oaklands (Ravens Worth)	Australia	Record daily precipitation	35.6 mm (1.4 in)	28 of 100 (Routine)
Steveston	Canada	Record low maximum temperature	11.1 C (52.0 F)	28 of 100 (Routine)
Achinsk	Russia	Record low minimum temperature	-8.8 C (16.2 F)	28 of 100 (Routine)
Elista	Russia	Record daily precipitation	27.4 mm (1.1 in)	28 of 100 (Routine)
Castle Rock	United States	Record low minimum temperature	-6.1 C (21.0 F)	28 of 100 (Routine)
Laurel 3 W	United States	Record high minimum temperature	17.8 C (64.0 F)	28 of 100 (Routine)
Cape Leeuwin	Australia	Record high maximum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Rouchel Brook (Albano)	Australia	Record daily precipitation	33.5 mm (1.3 in)	27 of 100 (Routine)
Serra Caiada	Brazil	Record daily precipitation	25.0 mm (1.0 in)	27 of 100 (Routine)
Ekangersarai	India	Record daily precipitation	26.5 mm (1.0 in)	27 of 100 (Routine)
Cedartown	United States	Record high minimum temperature	18.9 C (66.0 F)	27 of 100 (Routine)
Primghar	United States	Record daily precipitation	26.7 mm (1.1 in)	27 of 100 (Routine)

Counts by Type and Timescale

401 records

Records set or tied on 12 May 1964 by type: Highest daily maximum 20, Lowest daily maximum 48, Highest daily minimum 32, Lowest daily minimum 38, Heaviest daily rainfall 259, Heaviest daily snowfall 3, Deepest snow cover 1.

Records on 12 May 1964 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	48
Highest daily minimum	32
Lowest daily minimum	38
Heaviest daily rainfall	259
Heaviest daily snowfall	3
Deepest snow cover	1

Records on 12 May 1964 by timescale: all-time 0, monthly 5, daily 396.

How Much Records Were Beaten By

349 broken records

Margins by which the 349 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 114.0. Ties are not counted.

Top 20 by Significance

12 May 1964

Top 20 records on 12 May 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1964	Dehri, IN	daily rain	69.2 mm (2.7 in)	44.3 mm (1.7 in)	47 years	60 of 100 (Major)
12 May 1964	Siwan, IN	daily rain	62.8 mm (2.5 in)	37.9 mm (1.5 in)	60 years	58 of 100 (Notable)
12 May 1964	Nikolskoye/Beringa Ostrov, RU	daily rain	27.0 mm (1.1 in)	21.9 mm (0.9 in)	22 years	52 of 100 (Notable)
12 May 1964	Murrurundi Post Office, AU	daily rain	43.9 mm (1.7 in)	23.6 mm (0.9 in)	67 years	50 of 100 (Notable)
12 May 1964	Kerakat, IN	daily rain	40.6 mm (1.6 in)	22.3 mm (0.9 in)	59 years	48 of 100 (Notable)
12 May 1964	Aberdeen (Main Rd), AU	daily rain	31.0 mm (1.2 in)	22.9 mm (0.9 in)	67 years	47 of 100 (Notable)
12 May 1964	Muhammadabad, IN	daily rain	42.2 mm (1.7 in)	35.8 mm (1.4 in)	47 years	47 of 100 (Notable)
12 May 1964	Ambala Obsy, IN	daily rain	27.2 mm (1.1 in)	25.9 mm (1.0 in)	50 years	46 of 100 (Notable)
12 May 1964	Varanasi, IN	daily rain	30.2 mm (1.2 in)	20.5 mm (0.8 in)	59 years	46 of 100 (Notable)
12 May 1964	Denman (Palace Street), AU	daily rain	29.0 mm (1.1 in)	17.6 mm (0.7 in)	67 years	43 of 100 (Notable)
12 May 1964	Nimach, IN	daily rain	25.4 mm (1.0 in)	21.1 mm (0.8 in)	47 years	43 of 100 (Notable)
12 May 1964	Waupaca, US	daily rain	44.7 mm (1.8 in)	20.6 mm (0.8 in)	60 years	43 of 100 (Notable)
12 May 1964	Pio IX (Patrocinio), BR	daily rain	35.8 mm (1.4 in)	21.2 mm (0.8 in)	47 years	42 of 100 (Notable)
12 May 1964	Banswara, IN	daily rain	26.2 mm (1.0 in)	25.4 mm (1.0 in)	59 years	42 of 100 (Notable)
12 May 1964	Zamana, IN	daily rain	39.6 mm (1.6 in)	20.5 mm (0.8 in)	52 years	42 of 100 (Notable)
12 May 1964	Big Creek, CA	daily snowfall	5.6 cm (2.2 in)	5.6 cm (2.2 in)	69 years	41 of 100 (Notable)
12 May 1964	Ketchikan AP, US	daily snowfall	11.4 cm (4.5 in)	11.4 cm (4.5 in)	47 years	41 of 100 (Notable)
12 May 1964	Wingen (Murrulla), AU	daily rain	35.6 mm (1.4 in)	6.9 mm (0.27 in)	84 years	39 of 100 (Notable)
12 May 1964	Dasna, IN	daily rain	25.4 mm (1.0 in)	25.4 mm (1.0 in)	38 years	39 of 100 (Notable)
12 May 1964	Muscle Creek (Clendinning), AU	daily rain	42.4 mm (1.7 in)	25.4 mm (1.0 in)	43 years	38 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 1964

Records set or tied on this calendar date in each year from 1814 to 1964. 1964 had 401 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 1964-05-12: 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	310
20 to 40	36
40 to 60	2
60 to 80	0
80 to 100	0
100 to 120	1