Weather Records on 12 May 1966

909 weather records were set or tied worldwide on 12 May 1966. Highest significance: Telluride 4WNW, US.

Key Facts for 12 May 1966

On 12 May 1966, 909 weather records were set or tied at long-record stations worldwide.
31 were record highs and 528 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 21 monthly and 888 daily.
Telluride 4WNW set a daily record snow depth of 20.3 cm (8.0 in) on 12 May 1966.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 450 records.

Record Map

909 stations

909 station records on 12 May 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Telluride 4WNW	United States	Record snow depth	20.3 cm (8.0 in)	62 of 100 (Major)
Paw Paw 2S	United States	Record daily precipitation	90.7 mm (3.6 in)	58 of 100 (Notable)
Jamwa Ramgarh	India	Record daily precipitation	82.0 mm (3.2 in)	55 of 100 (Notable)
Mahwa (Mahwar)	India	Record daily precipitation	29.4 mm (1.2 in)	53 of 100 (Notable)
Chatsu	India	Record daily precipitation	43.0 mm (1.7 in)	52 of 100 (Notable)
Telluride 4WNW	United States	Record daily snowfall	27.9 cm (11.0 in)	50 of 100 (Notable)
Galva	United States	Record daily precipitation	69.3 mm (2.7 in)	49 of 100 (Notable)
Rjazan	Russia	Record daily precipitation	35.8 mm (1.4 in)	48 of 100 (Notable)
Wheaton 3 SE	United States	Record daily precipitation	56.6 mm (2.2 in)	48 of 100 (Notable)
Gujjran	India	Record daily precipitation	35.0 mm (1.4 in)	45 of 100 (Notable)
Patiala Obsy	India	Record daily precipitation	40.4 mm (1.6 in)	44 of 100 (Notable)
Amber	India	Record daily precipitation	34.5 mm (1.4 in)	44 of 100 (Notable)
Fort Good Hope 2	Canada	Record daily snowfall	10.7 cm (4.2 in)	43 of 100 (Notable)
Saint-Germain-Les-Belles	France	Record daily precipitation	37.0 mm (1.5 in)	43 of 100 (Notable)
New Delhi/Safdarjun	India	Record daily precipitation	31.1 mm (1.2 in)	43 of 100 (Notable)
Orangeville	Canada	Record daily snowfall	5.1 cm (2.0 in)	42 of 100 (Notable)
Cradle Valley (Waldheim)	Australia	Record daily precipitation	66.5 mm (2.6 in)	41 of 100 (Notable)
Ferozepur Sadar	India	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Clear Lake	United States	Record daily snowfall	8.9 cm (3.5 in)	41 of 100 (Notable)
Moga	India	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Romeo 1 N	United States	Record daily precipitation	31.0 mm (1.2 in)	40 of 100 (Notable)
Zira	India	Record daily precipitation	40.6 mm (1.6 in)	39 of 100 (Notable)
Harbor Beach 1 SSE	United States	Record daily snowfall	7.1 cm (2.8 in)	39 of 100 (Notable)
Dausa	India	Record daily precipitation	28.4 mm (1.1 in)	38 of 100 (Notable)
Walnut	United States	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Geneseo	United States	Record low maximum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Angola	United States	Record daily snowfall	5.3 cm (2.1 in)	37 of 100 (Notable)
Hastings	United States	Record low maximum temperature	5.0 C (41.0 F)	37 of 100 (Notable)
Genoa 2 W	United States	Record low maximum temperature	5.0 C (41.0 F)	37 of 100 (Notable)
Sibley	United States	Record low maximum temperature	3.3 C (37.9 F)	36 of 100 (Notable)
Windom	United States	Record low maximum temperature	4.4 C (39.9 F)	36 of 100 (Notable)
Stanton	United States	Record low maximum temperature	5.0 C (41.0 F)	36 of 100 (Notable)
Davenport L&D 15	United States	Record daily precipitation	41.1 mm (1.6 in)	36 of 100 (Notable)
Laghouat	Algeria	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Port Stanley	Canada	Record low maximum temperature	5.0 C (41.0 F)	35 of 100 (Notable)
Mont-Aigoual	France	Record daily precipitation	110.0 mm (4.3 in)	35 of 100 (Notable)
Three Rivers	United States	Record daily precipitation	39.6 mm (1.6 in)	35 of 100 (Notable)
Columbus 3 NE	United States	Record low maximum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Ravenna	United States	Record low maximum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Put-In-Bay	United States	Record daily precipitation	34.3 mm (1.4 in)	35 of 100 (Notable)
Catus	France	Record daily precipitation	33.2 mm (1.3 in)	34 of 100 (Routine)
Waterdale	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Morris River	United States	Record daily precipitation	75.9 mm (3.0 in)	34 of 100 (Routine)
Rockwell City	United States	Record low maximum temperature	5.6 C (42.1 F)	34 of 100 (Routine)
Winterset 4N	United States	Record low maximum temperature	6.7 C (44.1 F)	34 of 100 (Routine)
Ness City	United States	Record low maximum temperature	8.3 C (46.9 F)	34 of 100 (Routine)
Beaver City	United States	Record low maximum temperature	7.2 C (45.0 F)	34 of 100 (Routine)
Minden	United States	Record low maximum temperature	5.6 C (42.1 F)	34 of 100 (Routine)
Crested Butte	United States	Record snow depth	15.2 cm (6.0 in)	33 of 100 (Routine)
Elgin Water	United States	Record daily precipitation	55.9 mm (2.2 in)	33 of 100 (Routine)
Rochelle 6 NW	United States	Record daily precipitation	47.5 mm (1.9 in)	33 of 100 (Routine)
Belle Plaine	United States	Record low maximum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Burlington	United States	Record daily precipitation	69.3 mm (2.7 in)	33 of 100 (Routine)
Oberlin	United States	Record low maximum temperature	6.7 C (44.1 F)	33 of 100 (Routine)
York	United States	Record low maximum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Welland	Canada	Record low maximum temperature	5.6 C (42.1 F)	32 of 100 (Routine)
Reasi	India	Record daily precipitation	43.0 mm (1.7 in)	32 of 100 (Routine)
Muktesar	India	Record daily precipitation	29.7 mm (1.2 in)	32 of 100 (Routine)
Chomu	India	Record daily precipitation	25.0 mm (1.0 in)	32 of 100 (Routine)
Ames	United States	Record daily snowfall	25.4 cm (10.0 in)	32 of 100 (Routine)

Counts by Type and Timescale

909 records

Records set or tied on 12 May 1966 by type: Highest daily maximum 12, Lowest daily maximum 415, Highest daily minimum 19, Lowest daily minimum 113, Heaviest daily rainfall 300, Heaviest daily snowfall 43, Deepest snow cover 7.

Records on 12 May 1966 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	415
Highest daily minimum	19
Lowest daily minimum	113
Heaviest daily rainfall	300
Heaviest daily snowfall	43
Deepest snow cover	7

Records on 12 May 1966 by timescale: all-time 0, monthly 21, daily 888.

How Much Records Were Beaten By

791 broken records

Margins by which the 791 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

12 May 1966

Top 20 records on 12 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1966	Telluride 4WNW, US	daily snow depth	20.3 cm (8.0 in)	20.3 cm (8.0 in)	53 years	62 of 100 (Major)
12 May 1966	Paw Paw 2S, US	daily rain	90.7 mm (3.6 in)	69.1 mm (2.7 in)	45 years	58 of 100 (Notable)
12 May 1966	Jamwa Ramgarh, IN	monthly rain	82.0 mm (3.2 in)	54.1 mm (2.1 in)	6 years	55 of 100 (Notable)
12 May 1966	Mahwa (Mahwar), IN	daily rain	29.4 mm (1.2 in)	24.1 mm (0.9 in)	64 years	53 of 100 (Notable)
12 May 1966	Chatsu, IN	daily rain	43.0 mm (1.7 in)	40.5 mm (1.6 in)	24 years	52 of 100 (Notable)
12 May 1966	Telluride 4WNW, US	daily snowfall	27.9 cm (11.0 in)	25.4 cm (10.0 in)	20 years	50 of 100 (Notable)
12 May 1966	Galva, US	daily rain	69.3 mm (2.7 in)	31.5 mm (1.2 in)	43 years	49 of 100 (Notable)
12 May 1966	Rjazan, RU	daily rain	35.8 mm (1.4 in)	23.5 mm (0.9 in)	15 years	48 of 100 (Notable)
12 May 1966	Wheaton 3 SE, US	daily rain	56.6 mm (2.2 in)	40.3 mm (1.6 in)	4 years	48 of 100 (Notable)
12 May 1966	Gujjran, IN	daily rain	35.0 mm (1.4 in)	29.9 mm (1.2 in)	35 years	45 of 100 (Notable)
12 May 1966	Patiala Obsy, IN	monthly rain	40.4 mm (1.6 in)	8.9 mm (0.35 in)	52 years	44 of 100 (Notable)
12 May 1966	Amber, IN	daily rain	34.5 mm (1.4 in)	24.1 mm (0.9 in)	1 year	44 of 100 (Notable)
12 May 1966	Fort Good Hope 2, CA	daily snowfall	10.7 cm (4.2 in)	5.6 cm (2.2 in)	64 years	43 of 100 (Notable)
12 May 1966	Saint-Germain-Les-Belles, FR	daily rain	37.0 mm (1.5 in)	24.7 mm (1.0 in)	20 years	43 of 100 (Notable)
12 May 1966	New Delhi/Safdarjun, IN	monthly rain	31.1 mm (1.2 in)	4.7 mm (0.19 in)	56 years	43 of 100 (Notable)
12 May 1966	Orangeville, CA	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	82 years	42 of 100 (Notable)
12 May 1966	Cradle Valley (Waldheim), AU	daily rain	66.5 mm (2.6 in)	39.6 mm (1.6 in)	31 years	41 of 100 (Notable)
12 May 1966	Ferozepur Sadar, IN	daily rain	25.4 mm (1.0 in)	18.0 mm (0.7 in)	21 years	41 of 100 (Notable)
12 May 1966	Clear Lake, US	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	60 years	41 of 100 (Notable)
12 May 1966	Moga, IN	daily rain	29.7 mm (1.2 in)	19.3 mm (0.8 in)	24 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 1966

Records set or tied on this calendar date in each year from 1814 to 1966. 1966 had 909 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 1966-05-12: 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 50	770
50 to 100	16
100 to 150	2
150 to 200	1
200 to 250	1
250 to 300	1