Weather Records on 11 May 1966

992 weather records were set or tied worldwide on 11 May 1966. Highest significance: Sikar, IN.

Key Facts for 11 May 1966

On 11 May 1966, 992 weather records were set or tied at long-record stations worldwide.
23 were record highs and 709 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 66 monthly and 926 daily.
Sikar set a daily record precipitation of 50.6 mm (2.0 in) on 11 May 1966.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 460 records.

Record Map

992 stations

992 station records on 11 May 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sikar	India	Record daily precipitation	50.6 mm (2.0 in)	65 of 100 (Major)
Bikaner	India	Record daily precipitation	40.8 mm (1.6 in)	63 of 100 (Major)
Dungargarh	India	Record daily precipitation	32.3 mm (1.3 in)	60 of 100 (Major)
Chirawa	India	Record daily precipitation	27.9 mm (1.1 in)	50 of 100 (Notable)
Chicago UNIV	United States	Record daily precipitation	77.7 mm (3.1 in)	50 of 100 (Notable)
Buxton	United Kingdom	Record daily precipitation	26.7 mm (1.1 in)	49 of 100 (Notable)
Riversdale	South Africa	Record daily precipitation	53.5 mm (2.1 in)	47 of 100 (Notable)
Clear Lake	United States	Record daily snowfall	16.5 cm (6.5 in)	45 of 100 (Notable)
A Coruna	Spain	Record daily precipitation	33.9 mm (1.3 in)	44 of 100 (Notable)
Waycross 4 NE	United States	Record low maximum temperature	16.1 C (61.0 F)	43 of 100 (Notable)
Shoshone	United States	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Aspen	United States	Record daily snowfall	14.0 cm (5.5 in)	41 of 100 (Notable)
Durham	Canada	Record low minimum temperature	-6.1 C (21.0 F)	39 of 100 (Notable)
Bharatpur	India	Record daily precipitation	30.7 mm (1.2 in)	39 of 100 (Notable)
Ottawa 4SW	United States	Record daily precipitation	63.8 mm (2.5 in)	39 of 100 (Notable)
Southern Pines 2 W	United States	Record low minimum temperature	0.0 C (32.0 F)	39 of 100 (Notable)
Onaka	United States	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Marengo	United States	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Tarboro 1 S	United States	Record low minimum temperature	0.0 C (32.0 F)	38 of 100 (Notable)
Batala	India	Record daily precipitation	31.7 mm (1.2 in)	37 of 100 (Notable)
Nadhai	India	Record daily precipitation	25.3 mm (1.0 in)	37 of 100 (Notable)
Louisville 1 E	United States	Record low minimum temperature	4.4 C (39.9 F)	37 of 100 (Notable)
Atlantic 1 NE	United States	Record daily precipitation	40.1 mm (1.6 in)	37 of 100 (Notable)
Genoa 2 W	United States	Record low maximum temperature	7.2 C (45.0 F)	37 of 100 (Notable)
Moorestown 4 E	United States	Record low minimum temperature	-1.7 C (28.9 F)	37 of 100 (Notable)
Jodhpur	India	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Lumberton	United States	Record low minimum temperature	0.6 C (33.1 F)	36 of 100 (Notable)
Hopewell 1 SE	United States	Record daily snowfall	7.6 cm (3.0 in)	36 of 100 (Notable)
Kyelong Obsy	India	Record daily precipitation	43.2 mm (1.7 in)	35 of 100 (Notable)
Agra	India	Record daily precipitation	37.5 mm (1.5 in)	35 of 100 (Notable)
Le Mars	United States	Record low maximum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Caledonia	United States	Record low maximum temperature	5.0 C (41.0 F)	35 of 100 (Notable)
Cheraw	United States	Record low maximum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Summerville 4W	United States	Record low maximum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Forestburg 4 NNE	United States	Record low maximum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
La Delle 7 NE	United States	Record low maximum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Milbank 4 NW	United States	Record daily snowfall	5.1 cm (2.0 in)	35 of 100 (Notable)
Vermillion 2 SE	United States	Record low maximum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Palmetto	United States	Record low minimum temperature	-0.6 C (30.9 F)	35 of 100 (Notable)
Darlington Wwtp	United States	Record daily snowfall	5.1 cm (2.0 in)	35 of 100 (Notable)
Alexandria	United States	Record low maximum temperature	4.4 C (39.9 F)	34 of 100 (Routine)
Hatteras	United States	Record low maximum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Hatteras	United States	Record low minimum temperature	7.2 C (45.0 F)	34 of 100 (Routine)
Nuwara Eliya	Sri Lanka	Record high maximum temperature	27.1 C (80.8 F)	33 of 100 (Routine)
Churu	India	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Elgin Water	United States	Record daily snowfall	5.1 cm (2.0 in)	33 of 100 (Routine)
Guthrie Ctr	United States	Record daily precipitation	42.2 mm (1.7 in)	33 of 100 (Routine)
Paxton	United States	Record daily precipitation	31.5 mm (1.2 in)	33 of 100 (Routine)
Raleigh State UNIV	United States	Record low minimum temperature	1.7 C (35.1 F)	33 of 100 (Routine)
Grenora	United States	Record daily snowfall	5.1 cm (2.0 in)	33 of 100 (Routine)
Kingstree	United States	Record low minimum temperature	3.3 C (37.9 F)	33 of 100 (Routine)
Highmore	United States	Record low maximum temperature	3.9 C (39.0 F)	33 of 100 (Routine)
Marion	United States	Record low maximum temperature	4.4 C (39.9 F)	33 of 100 (Routine)
Redfield	United States	Record low maximum temperature	3.3 C (37.9 F)	33 of 100 (Routine)
Redwood Falls Muni AP	United States	Record low maximum temperature	3.9 C (39.0 F)	33 of 100 (Routine)
Guelph Oac	Canada	Record low minimum temperature	-5.6 C (21.9 F)	32 of 100 (Routine)
Alwar	India	Record daily precipitation	37.0 mm (1.5 in)	32 of 100 (Routine)
Eastman 1 W	United States	Record low maximum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Freeport	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Plattsmouth 1E	United States	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)

Counts by Type and Timescale

992 records

Records set or tied on 11 May 1966 by type: Highest daily maximum 9, Lowest daily maximum 336, Highest daily minimum 14, Lowest daily minimum 373, Heaviest daily rainfall 177, Heaviest daily snowfall 77, Deepest snow cover 6.

Records on 11 May 1966 by type
Record type	Records
Highest daily maximum	9
Lowest daily maximum	336
Highest daily minimum	14
Lowest daily minimum	373
Heaviest daily rainfall	177
Heaviest daily snowfall	77
Deepest snow cover	6

Records on 11 May 1966 by timescale: all-time 0, monthly 66, daily 926.

How Much Records Were Beaten By

800 broken records

Margins by which the 800 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 140.0. Ties are not counted.

Top 20 by Significance

11 May 1966

Top 20 records on 11 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1966	Sikar, IN	daily rain	50.6 mm (2.0 in)	43.7 mm (1.7 in)	64 years	65 of 100 (Major)
11 May 1966	Bikaner, IN	daily rain	40.8 mm (1.6 in)	35.5 mm (1.4 in)	57 years	63 of 100 (Major)
11 May 1966	Dungargarh, IN	daily rain	32.3 mm (1.3 in)	25.9 mm (1.0 in)	49 years	60 of 100 (Major)
11 May 1966	Chirawa, IN	daily rain	27.9 mm (1.1 in)	26.6 mm (1.0 in)	28 years	50 of 100 (Notable)
11 May 1966	Chicago UNIV, US	daily rain	77.7 mm (3.1 in)	51.8 mm (2.0 in)	23 years	50 of 100 (Notable)
11 May 1966	Buxton, GB	daily rain	26.7 mm (1.1 in)	10.7 mm (0.4 in)	75 years	49 of 100 (Notable)
11 May 1966	Riversdale, ZA	monthly rain	53.5 mm (2.1 in)	9.0 mm (0.35 in)	54 years	47 of 100 (Notable)
11 May 1966	Clear Lake, US	monthly snowfall	16.5 cm (6.5 in)	6.3 cm (2.5 in)	58 years	45 of 100 (Notable)
11 May 1966	A Coruna, ES	daily rain	33.9 mm (1.3 in)	24.1 mm (0.9 in)	5 years	44 of 100 (Notable)
11 May 1966	Waycross 4 NE, US	daily low max	16.1 C (61.0 F)	6.1 C (11.0 F)	63 years	43 of 100 (Notable)
11 May 1966	Shoshone, US	daily rain	27.4 mm (1.1 in)	11.9 mm (0.5 in)	44 years	42 of 100 (Notable)
11 May 1966	Aspen, US	daily snowfall	14.0 cm (5.5 in)	14.0 cm (5.5 in)	52 years	41 of 100 (Notable)
11 May 1966	Durham, CA	monthly low min	-6.1 C (21.0 F)	0.5 C (0.9 F)	70 years	39 of 100 (Notable)
11 May 1966	Bharatpur, IN	monthly rain	30.7 mm (1.2 in)	5.0 mm (0.20 in)	48 years	39 of 100 (Notable)
11 May 1966	Ottawa 4SW, US	daily rain	63.8 mm (2.5 in)	16.8 mm (0.7 in)	53 years	39 of 100 (Notable)
11 May 1966	Southern Pines 2 W, US	monthly low min	0.0 C (32.0 F)	1.7 C (3.1 F)	60 years	39 of 100 (Notable)
11 May 1966	Onaka, US	monthly snowfall	10.2 cm (4.0 in)	9.2 cm (3.6 in)	23 years	39 of 100 (Notable)
11 May 1966	Marengo, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	71 years	38 of 100 (Notable)
11 May 1966	Tarboro 1 S, US	monthly low min	0.0 C (32.0 F)	1.1 C (2.0 F)	60 years	38 of 100 (Notable)
11 May 1966	Batala, IN	daily rain	31.7 mm (1.2 in)	15.2 mm (0.6 in)	40 years	37 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 992 records.

Counts for years before the ledger starts come from the same station rules.

Records on 05-11 in each year
Year	Records
1814	3
1832	1
1836	3
1837	1
1838	1
1848	2
1856	1
1860	2
1865	1
1867	1
1869	1
1872	1
1874	2
1879	2
1880	1
1881	5
1883	3
1884	2
1885	1
1886	2
1887	1
1888	1
1889	2
1892	1
1893	3
1894	2
1895	4
1896	3
1897	6
1898	5
1900	7
1901	9
1902	6
1903	7
1904	6
1905	12
1906	21
1907	44
1908	9
1909	12
1910	16
1911	99
1912	21
1913	20
1914	20
1915	16
1916	22
1917	40
1918	54
1919	56
1920	181
1921	58
1922	61
1923	111
1924	239
1925	410
1926	472
1927	318
1928	252
1929	126
1930	380
1931	254
1932	170
1933	429
1934	332
1935	276
1936	363
1937	170
1938	141
1939	213
1940	340
1941	411
1942	389
1943	646
1944	408
1945	483
1946	747
1947	480
1948	407
1949	451
1950	285
1951	395
1952	629
1953	686
1954	492
1955	235
1956	942
1957	439
1958	499
1959	575
1960	809
1961	663
1962	670
1963	984
1964	299
1965	356
1966	992
1967	974
1968	909
1969	349
1970	764
1971	565
1972	673
1973	429
1974	795
1975	383
1976	509
1977	836
1978	1,070
1979	1,239
1980	693
1981	1,298
1982	624
1983	930
1984	666
1985	835
1986	684
1987	1,247
1988	485
1989	952
1990	935
1991	990
1992	728
1993	1,088
1994	633
1995	1,244
1996	1,088
1997	1,033
1998	1,315
1999	1,052
2000	1,286
2001	848
2002	845
2003	1,321
2004	834
2005	944
2006	822
2007	833
2008	1,015
2009	605
2010	1,292
2011	1,414
2012	1,181
2013	615
2014	662
2015	1,038
2016	497
2017	546
2018	988
2019	915
2020	1,068
2021	590
2022	1,470
2023	390
2024	579
2025	1,104
2026	797

Download the Data

Data for records on 1966-05-11: 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	743
20 to 40	34
40 to 60	17
60 to 80	4
80 to 100	1
100 to 120	0
120 to 140	1