Weather Records on 12 May 1963

777 weather records were set or tied worldwide on 12 May 1963. Highest significance: Milan 1NW, US.

Key Facts for 12 May 1963

On 12 May 1963, 777 weather records were set or tied at long-record stations worldwide.
208 were record highs and 209 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 767 daily.
Milan 1NW set a daily record precipitation of 62.2 mm (2.4 in) on 12 May 1963.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 451 records.

Record Map

777 stations

777 station records on 12 May 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Milan 1NW	United States	Record daily precipitation	62.2 mm (2.4 in)	65 of 100 (Major)
Whitewood	Canada	Record daily snowfall	19.1 cm (7.5 in)	62 of 100 (Major)
Veitch	Australia	Record daily precipitation	45.0 mm (1.8 in)	61 of 100 (Major)
Rockwell City	United States	Record daily precipitation	64.8 mm (2.6 in)	60 of 100 (Major)
Ames 3 SW	United States	Record daily precipitation	84.1 mm (3.3 in)	59 of 100 (Notable)
Columbus Junction	United States	Record daily precipitation	74.4 mm (2.9 in)	53 of 100 (Notable)
Bowbells	United States	Record daily precipitation	42.4 mm (1.7 in)	53 of 100 (Notable)
Souris	Canada	Record daily precipitation	42.2 mm (1.7 in)	50 of 100 (Notable)
Birtle	Canada	Record daily precipitation	27.7 mm (1.1 in)	48 of 100 (Notable)
Wapello	United States	Record daily precipitation	57.4 mm (2.3 in)	47 of 100 (Notable)
Hubbard	Canada	Record daily snowfall	12.7 cm (5.0 in)	46 of 100 (Notable)
Brookings 2 NE	United States	Record daily precipitation	38.1 mm (1.5 in)	46 of 100 (Notable)
Alawoona (Schells Well)	Australia	Record daily precipitation	38.1 mm (1.5 in)	45 of 100 (Notable)
Reitz 36	South Africa	Record daily precipitation	52.0 mm (2.0 in)	45 of 100 (Notable)
Watertown Rgnl AP	United States	Record daily precipitation	65.3 mm (2.6 in)	45 of 100 (Notable)
Redwood Falls Muni AP	United States	Record daily precipitation	47.5 mm (1.9 in)	42 of 100 (Notable)
Doorndraai	South Africa	Record daily precipitation	44.0 mm (1.7 in)	41 of 100 (Notable)
Fig Tree	South Africa	Record daily precipitation	39.0 mm (1.5 in)	41 of 100 (Notable)
Adelaide West Terrace	Australia	Record daily precipitation	26.2 mm (1.0 in)	40 of 100 (Notable)
Mitcham Post Office	Australia	Record daily precipitation	30.5 mm (1.2 in)	40 of 100 (Notable)
Adelaide (Torrens Island)	Australia	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Belair (Kalyra)	Australia	Record daily precipitation	47.2 mm (1.9 in)	38 of 100 (Notable)
Heilbron (Tnk)	South Africa	Record daily precipitation	35.0 mm (1.4 in)	38 of 100 (Notable)
Warriup	Australia	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Rajim	India	Record daily precipitation	27.0 mm (1.1 in)	36 of 100 (Notable)
Tagus	United States	Record daily precipitation	25.4 mm (1.0 in)	35 of 100 (Notable)
Caragabal Post Office	Australia	Record daily precipitation	51.3 mm (2.0 in)	32 of 100 (Routine)
Yanco (Billinbah East)	Australia	Record daily precipitation	26.4 mm (1.0 in)	32 of 100 (Routine)
Maroondah Weir (Melbourne Wate	Australia	Record daily precipitation	27.7 mm (1.1 in)	32 of 100 (Routine)
Ft Dodge 5NNW	United States	Record daily precipitation	35.8 mm (1.4 in)	32 of 100 (Routine)
Cobar Post Office	Australia	Record high minimum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Carlyle	Canada	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Cadillac	Canada	Record daily snowfall	10.4 cm (4.1 in)	31 of 100 (Routine)
Cape Race (Aut)	Canada	Record daily snowfall	20.3 cm (8.0 in)	31 of 100 (Routine)
Dhamtari	India	Record daily precipitation	48.2 mm (1.9 in)	31 of 100 (Routine)
Borenore Store	Australia	Record daily precipitation	36.6 mm (1.4 in)	30 of 100 (Routine)
Virden	Canada	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Waskada	Canada	Record daily precipitation	25.1 mm (1.0 in)	30 of 100 (Routine)
Ekimchan	Russia	Record high minimum temperature	8.0 C (46.4 F)	30 of 100 (Routine)
Union Springs 9 S	United States	Record high minimum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Canby	United States	Record daily precipitation	28.4 mm (1.1 in)	30 of 100 (Routine)
Montrose	United States	Record low maximum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Britton	United States	Record daily precipitation	31.5 mm (1.2 in)	30 of 100 (Routine)
Memphis	United States	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
West Wyalong (Tallimbalong)	Australia	Record daily precipitation	48.5 mm (1.9 in)	29 of 100 (Routine)
Chiautla de Tapia	Mexico	Record daily precipitation	59.9 mm (2.4 in)	29 of 100 (Routine)
Corning	United States	Record high maximum temperature	33.3 C (91.9 F)	29 of 100 (Routine)
Willmar Wwtp	United States	Record daily precipitation	36.1 mm (1.4 in)	29 of 100 (Routine)
Brownwood 2NE	United States	Record high minimum temperature	22.2 C (72.0 F)	29 of 100 (Routine)
Adelaide (Seaton)	Australia	Record daily precipitation	27.7 mm (1.1 in)	28 of 100 (Routine)
Cargo Post Office	Australia	Record daily precipitation	43.2 mm (1.7 in)	28 of 100 (Routine)
Old Junee (Millbank)	Australia	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Murringo Post Office	Australia	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Celaya (Smn)	Mexico	Record low minimum temperature	6.1 C (43.0 F)	28 of 100 (Routine)
St. Petersburg	Russia	Record high maximum temperature	26.6 C (79.9 F)	28 of 100 (Routine)
Clayton 1 SSW	United States	Record high minimum temperature	16.7 C (62.1 F)	28 of 100 (Routine)
Primghar	United States	Record low maximum temperature	11.1 C (52.0 F)	28 of 100 (Routine)
Worthington	United States	Record low maximum temperature	8.3 C (46.9 F)	28 of 100 (Routine)
La Delle 7 NE	United States	Record daily precipitation	45.0 mm (1.8 in)	28 of 100 (Routine)
Woodland Park	Australia	Record daily precipitation	27.2 mm (1.1 in)	27 of 100 (Routine)

Counts by Type and Timescale

777 records

Records set or tied on 12 May 1963 by type: Highest daily maximum 102, Lowest daily maximum 131, Highest daily minimum 106, Lowest daily minimum 78, Heaviest daily rainfall 346, Heaviest daily snowfall 13, Deepest snow cover 1.

Records on 12 May 1963 by type
Record type	Records
Highest daily maximum	102
Lowest daily maximum	131
Highest daily minimum	106
Lowest daily minimum	78
Heaviest daily rainfall	346
Heaviest daily snowfall	13
Deepest snow cover	1

Records on 12 May 1963 by timescale: all-time 0, monthly 10, daily 767.

How Much Records Were Beaten By

623 broken records

Margins by which the 623 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 191.0. Ties are not counted.

Top 20 by Significance

12 May 1963

Top 20 records on 12 May 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1963	Milan 1NW, US	daily rain	62.2 mm (2.4 in)	50.0 mm (2.0 in)	60 years	65 of 100 (Major)
12 May 1963	Whitewood, CA	daily snowfall	19.1 cm (7.5 in)	19.1 cm (7.5 in)	60 years	62 of 100 (Major)
12 May 1963	Veitch, AU	daily rain	45.0 mm (1.8 in)	42.0 mm (1.7 in)	54 years	61 of 100 (Major)
12 May 1963	Rockwell City, US	daily rain	64.8 mm (2.6 in)	44.5 mm (1.8 in)	56 years	60 of 100 (Major)
12 May 1963	Ames 3 SW, US	daily rain	84.1 mm (3.3 in)	56.2 mm (2.2 in)	42 years	59 of 100 (Notable)
12 May 1963	Columbus Junction, US	daily rain	74.4 mm (2.9 in)	38.8 mm (1.5 in)	42 years	53 of 100 (Notable)
12 May 1963	Bowbells, US	daily rain	42.4 mm (1.7 in)	29.4 mm (1.2 in)	40 years	53 of 100 (Notable)
12 May 1963	Souris, CA	daily rain	42.2 mm (1.7 in)	32.5 mm (1.3 in)	32 years	50 of 100 (Notable)
12 May 1963	Birtle, CA	daily rain	27.7 mm (1.1 in)	18.3 mm (0.7 in)	53 years	48 of 100 (Notable)
12 May 1963	Wapello, US	daily rain	57.4 mm (2.3 in)	35.0 mm (1.4 in)	29 years	47 of 100 (Notable)
12 May 1963	Hubbard, CA	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	54 years	46 of 100 (Notable)
12 May 1963	Brookings 2 NE, US	daily rain	38.1 mm (1.5 in)	28.2 mm (1.1 in)	42 years	46 of 100 (Notable)
12 May 1963	Alawoona (Schells Well), AU	daily rain	38.1 mm (1.5 in)	32.8 mm (1.3 in)	2 years	45 of 100 (Notable)
12 May 1963	Reitz 36, ZA	daily rain	52.0 mm (2.0 in)	31.7 mm (1.2 in)	4 years	45 of 100 (Notable)
12 May 1963	Watertown Rgnl AP, US	daily rain	65.3 mm (2.6 in)	38.6 mm (1.5 in)	20 years	45 of 100 (Notable)
12 May 1963	Redwood Falls Muni AP, US	daily rain	47.5 mm (1.9 in)	31.8 mm (1.3 in)	12 years	42 of 100 (Notable)
12 May 1963	Doorndraai, ZA	daily rain	44.0 mm (1.7 in)	34.0 mm (1.3 in)	4 years	41 of 100 (Notable)
12 May 1963	Fig Tree, ZA	daily rain	39.0 mm (1.5 in)	33.9 mm (1.3 in)	37 years	41 of 100 (Notable)
12 May 1963	Adelaide West Terrace, AU	daily rain	26.2 mm (1.0 in)	0.3 mm (0.01 in)	104 years	40 of 100 (Notable)
12 May 1963	Mitcham Post Office, AU	daily rain	30.5 mm (1.2 in)	8.1 mm (0.32 in)	78 years	40 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 1963

Records set or tied on this calendar date in each year from 1814 to 1963. 1963 had 777 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 1963-05-12: 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 25	591
25 to 50	23
50 to 75	3
75 to 100	3
100 to 125	1
125 to 150	1
150 to 175	0
175 to 200	1