Weather Records on 30 May 1966

326 weather records were set or tied worldwide on 30 May 1966. Highest significance: Tikamgarh, IN.

Key Facts for 30 May 1966

On 30 May 1966, 326 weather records were set or tied at long-record stations worldwide.
90 were record highs and 140 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 6 monthly and 319 daily.
Tikamgarh set a daily record precipitation of 40.2 mm (1.6 in) on 30 May 1966.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 439 records.

Record Map

326 stations

326 station records on 30 May 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tikamgarh	India	Record daily precipitation	40.2 mm (1.6 in)	62 of 100 (Major)
Lagoa da Canoa	Brazil	Record daily precipitation	62.0 mm (2.4 in)	50 of 100 (Notable)
Kundahit	India	Record daily precipitation	85.3 mm (3.4 in)	46 of 100 (Notable)
Upanema (Dnocs)	Brazil	Record daily precipitation	91.3 mm (3.6 in)	42 of 100 (Notable)
Gohpur	India	Record daily precipitation	94.0 mm (3.7 in)	40 of 100 (Notable)
Jua	Brazil	Record daily precipitation	43.6 mm (1.7 in)	38 of 100 (Notable)
Nanaimo	Canada	Record low minimum temperature	-1.1 C (30.0 F)	35 of 100 (Notable)
Arad	Romania	Record low maximum temperature	9.4 C (48.9 F)	35 of 100 (Notable)
Syktyvkar	Russia	Record high minimum temperature	15.8 C (60.4 F)	33 of 100 (Routine)
Obluce	Russia	Record daily precipitation	36.9 mm (1.5 in)	33 of 100 (Routine)
Coolah (Coolah Creek)	Australia	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Hurbanovo	Slovakia	Record low maximum temperature	9.3 C (48.7 F)	32 of 100 (Routine)
Kazan	Russia	Record high minimum temperature	18.4 C (65.1 F)	32 of 100 (Routine)
Traipu	Brazil	Record daily precipitation	30.3 mm (1.2 in)	31 of 100 (Routine)
Osijek	Croatia	Record low maximum temperature	12.3 C (54.1 F)	31 of 100 (Routine)
Major Isidoro (Sertaozinho)	Brazil	Record daily precipitation	25.0 mm (1.0 in)	29 of 100 (Routine)
Penedo	Brazil	Record daily precipitation	68.0 mm (2.7 in)	29 of 100 (Routine)
Bettiah	India	Record daily precipitation	45.0 mm (1.8 in)	29 of 100 (Routine)
Williamston 1 E	United States	Record daily precipitation	51.3 mm (2.0 in)	29 of 100 (Routine)
Antigo	United States	Record low minimum temperature	-1.7 C (28.9 F)	29 of 100 (Routine)
Sonnblick	Austria	Record low minimum temperature	-11.4 C (11.5 F)	28 of 100 (Routine)
Magdeburg	Germany	Record low minimum temperature	1.9 C (35.4 F)	28 of 100 (Routine)
Fichtelberg	Germany	Record low minimum temperature	-1.6 C (29.1 F)	28 of 100 (Routine)
Kisinev	Moldova	Record low maximum temperature	16.4 C (61.5 F)	28 of 100 (Routine)
Tooele	United States	Record high minimum temperature	19.4 C (66.9 F)	28 of 100 (Routine)
Palestine	United States	Record low maximum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Mt Vernon	United States	Record low minimum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
Houston	United States	Record low minimum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
Budapest	Hungary	Record low maximum temperature	10.7 C (51.3 F)	26 of 100 (Routine)
Balasore	India	Record daily precipitation	37.5 mm (1.5 in)	26 of 100 (Routine)
Aligarh	India	Record daily precipitation	33.2 mm (1.3 in)	26 of 100 (Routine)
Purdum	United States	Record daily precipitation	33.3 mm (1.3 in)	26 of 100 (Routine)
Chippewa Lake	United States	Record low maximum temperature	15.0 C (59.0 F)	26 of 100 (Routine)
Picui	Brazil	Record daily precipitation	41.6 mm (1.6 in)	25 of 100 (Routine)
Estancia	Brazil	Record daily precipitation	85.6 mm (3.4 in)	25 of 100 (Routine)
Pelee Island	Canada	Record low minimum temperature	2.2 C (36.0 F)	25 of 100 (Routine)
Buffalo	United States	Record high maximum temperature	32.2 C (90.0 F)	25 of 100 (Routine)
Lindenberg	Germany	Record low minimum temperature	1.9 C (35.4 F)	24 of 100 (Routine)
Isla Perez	Mexico	Record high maximum temperature	37.2 C (99.0 F)	24 of 100 (Routine)
Turnu Magurele	Romania	Record high minimum temperature	14.1 C (57.4 F)	24 of 100 (Routine)
Cherdyn'	Russia	Record high minimum temperature	17.0 C (62.6 F)	24 of 100 (Routine)
Wick	United Kingdom	Record high maximum temperature	18.6 C (65.5 F)	23 of 100 (Routine)
Waterdale	United States	Record high maximum temperature	32.8 C (91.0 F)	23 of 100 (Routine)
Baturite	Brazil	Record daily precipitation	32.4 mm (1.3 in)	22 of 100 (Routine)
Debrecen Airport	Hungary	Record low maximum temperature	10.2 C (50.4 F)	22 of 100 (Routine)
Cluj Napoca	Romania	Record low maximum temperature	8.6 C (47.5 F)	22 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record high minimum temperature	13.5 C (56.3 F)	22 of 100 (Routine)
Lukojanov	Russia	Record high maximum temperature	32.1 C (89.8 F)	22 of 100 (Routine)
Davis 2 WSW Exp Farm	United States	Record low maximum temperature	17.8 C (64.0 F)	22 of 100 (Routine)
Red Lodge	United States	Record high minimum temperature	13.3 C (55.9 F)	22 of 100 (Routine)
Governador Dix-Sept Rosado	Brazil	Record daily precipitation	45.0 mm (1.8 in)	21 of 100 (Routine)
Kentfield	United States	Record low maximum temperature	13.9 C (57.0 F)	21 of 100 (Routine)
Goshen 3SW	United States	Record low maximum temperature	16.1 C (61.0 F)	21 of 100 (Routine)
Greensburg	United States	Record low minimum temperature	1.1 C (34.0 F)	21 of 100 (Routine)
Laguna	United States	Record high maximum temperature	36.7 C (98.1 F)	21 of 100 (Routine)
Ermakovskoe	Russia	Record daily precipitation	23.7 mm (0.9 in)	20 of 100 (Routine)
St. Petersburg	Russia	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Springvale	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Brohovo	Russia	Record daily precipitation	8.7 mm (0.34 in)	20 of 100 (Routine)
Rockbank	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)

Counts by Type and Timescale

326 records

Records set or tied on 30 May 1966 by type: Highest daily maximum 48, Lowest daily maximum 61, Highest daily minimum 42, Lowest daily minimum 79, Heaviest daily rainfall 96.

Records on 30 May 1966 by type
Record type	Records
Highest daily maximum	48
Lowest daily maximum	61
Highest daily minimum	42
Lowest daily minimum	79
Heaviest daily rainfall	96
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 May 1966 by timescale: all-time 1, monthly 6, daily 319.

How Much Records Were Beaten By

249 broken records

Margins by which the 249 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 67.3. Ties are not counted.

Top 20 by Significance

30 May 1966

Top 20 records on 30 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1966	Tikamgarh, IN	daily rain	40.2 mm (1.6 in)	36.4 mm (1.4 in)	55 years	62 of 100 (Major)
30 May 1966	Lagoa da Canoa, BR	daily rain	62.0 mm (2.4 in)	37.0 mm (1.5 in)	44 years	50 of 100 (Notable)
30 May 1966	Kundahit, IN	daily rain	85.3 mm (3.4 in)	67.3 mm (2.6 in)	7 years	46 of 100 (Notable)
30 May 1966	Upanema (Dnocs), BR	daily rain	91.3 mm (3.6 in)	47.8 mm (1.9 in)	16 years	42 of 100 (Notable)
30 May 1966	Gohpur, IN	daily rain	94.0 mm (3.7 in)	48.8 mm (1.9 in)	20 years	40 of 100 (Notable)
30 May 1966	Jua, BR	daily rain	43.6 mm (1.7 in)	29.1 mm (1.1 in)	25 years	38 of 100 (Notable)
30 May 1966	Nanaimo, CA	daily low min	-1.1 C (30.0 F)	2.8 C (5.0 F)	64 years	35 of 100 (Notable)
30 May 1966	Arad, RO	daily low max	9.4 C (48.9 F)	3.9 C (7.0 F)	66 years	35 of 100 (Notable)
30 May 1966	Syktyvkar, RU	daily high min	15.8 C (60.4 F)	1.5 C (2.7 F)	76 years	33 of 100 (Routine)
30 May 1966	Obluce, RU	daily rain	36.9 mm (1.5 in)	15.1 mm (0.6 in)	21 years	33 of 100 (Routine)
30 May 1966	Coolah (Coolah Creek), AU	daily rain	33.0 mm (1.3 in)	24.4 mm (1.0 in)	23 years	32 of 100 (Routine)
30 May 1966	Hurbanovo, SK	daily low max	9.3 C (48.7 F)	7.3 C (13.1 F)	33 years	32 of 100 (Routine)
30 May 1966	Kazan, RU	daily high min	18.4 C (65.1 F)	2.4 C (4.3 F)	68 years	32 of 100 (Routine)
30 May 1966	Traipu, BR	daily rain	30.3 mm (1.2 in)	17.9 mm (0.7 in)	44 years	31 of 100 (Routine)
30 May 1966	Osijek, HR	daily low max	12.3 C (54.1 F)	2.7 C (4.9 F)	66 years	31 of 100 (Routine)
30 May 1966	Major Isidoro (Sertaozinho), BR	daily rain	25.0 mm (1.0 in)	8.4 mm (0.33 in)	48 years	29 of 100 (Routine)
30 May 1966	Penedo, BR	daily rain	68.0 mm (2.7 in)	20.0 mm (0.8 in)	45 years	29 of 100 (Routine)
30 May 1966	Bettiah, IN	daily rain	45.0 mm (1.8 in)	18.3 mm (0.7 in)	36 years	29 of 100 (Routine)
30 May 1966	Williamston 1 E, US	daily rain	51.3 mm (2.0 in)	27.2 mm (1.1 in)	17 years	29 of 100 (Routine)
30 May 1966	Antigo, US	daily low min	-1.7 C (28.9 F)	0.6 C (1.1 F)	71 years	29 of 100 (Routine)

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

1818 to 1966

Records set or tied on this calendar date in each year from 1818 to 1966. 1966 had 326 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1966-05-30: 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 10	226
10 to 20	10
20 to 30	8
30 to 40	2
40 to 50	2
50 to 60	0
60 to 70	1