Weather Records on 1 May 1966

707 weather records were set or tied worldwide on 1 May 1966. Highest significance: Hedrum, NO.

Key Facts for 1 May 1966

On 1 May 1966, 707 weather records were set or tied at long-record stations worldwide.
78 were record highs and 263 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 74 monthly and 632 daily.
Hedrum set a monthly record snow depth of 38.0 cm (15.0 in) on 1 May 1966.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 441 records.

Record Map

707 stations

707 station records on 1 May 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hedrum	Norway	Record snow depth	38.0 cm (15.0 in)	70 of 100 (Major)
Vanur	India	Record daily precipitation	246.2 mm (9.7 in)	63 of 100 (Major)
Nes Pa Hedmark	Norway	Record snow depth	26.0 cm (10.2 in)	61 of 100 (Major)
Nord Odal	Norway	Record snow depth	49.0 cm (19.3 in)	59 of 100 (Notable)
Saunur(Savnur)	India	Record daily precipitation	100.0 mm (3.9 in)	58 of 100 (Notable)
Satyavedu	India	Record daily precipitation	81.0 mm (3.2 in)	57 of 100 (Notable)
Ravenswood Lock Park	United States	Record daily precipitation	57.4 mm (2.3 in)	57 of 100 (Notable)
Porto Novo	India	Record daily precipitation	136.0 mm (5.4 in)	56 of 100 (Notable)
Tiruppattur	India	Record daily precipitation	93.0 mm (3.7 in)	53 of 100 (Notable)
Pennagaram	India	Record daily precipitation	109.0 mm (4.3 in)	53 of 100 (Notable)
Alur	India	Record daily precipitation	127.0 mm (5.0 in)	52 of 100 (Notable)
Ulundurpet	India	Record daily precipitation	116.0 mm (4.6 in)	52 of 100 (Notable)
Narasimharajapura	India	Record daily precipitation	76.2 mm (3.0 in)	51 of 100 (Notable)
Cuddalore	India	Record daily precipitation	349.9 mm (13.8 in)	51 of 100 (Notable)
Madurantakam	India	Record daily precipitation	81.0 mm (3.2 in)	51 of 100 (Notable)
Sveg	Sweden	Record snow depth	46.0 cm (18.1 in)	51 of 100 (Notable)
Ambur	India	Record daily precipitation	88.0 mm (3.5 in)	50 of 100 (Notable)
Camden 1	United States	Record daily precipitation	143.0 mm (5.6 in)	50 of 100 (Notable)
Gauribidanur	India	Record daily precipitation	79.0 mm (3.1 in)	49 of 100 (Notable)
Tiruvannamalai	India	Record daily precipitation	110.0 mm (4.3 in)	49 of 100 (Notable)
Villupuram	India	Record daily precipitation	80.0 mm (3.1 in)	48 of 100 (Notable)
Panruti	India	Record daily precipitation	190.0 mm (7.5 in)	48 of 100 (Notable)
Creekside	United States	Record daily precipitation	53.3 mm (2.1 in)	48 of 100 (Notable)
Sullurpet	India	Record daily precipitation	92.4 mm (3.6 in)	47 of 100 (Notable)
Chickmagalur	India	Record daily precipitation	85.4 mm (3.4 in)	47 of 100 (Notable)
Tarikere	India	Record daily precipitation	73.1 mm (2.9 in)	47 of 100 (Notable)
Uttiramerur	India	Record daily precipitation	75.0 mm (3.0 in)	47 of 100 (Notable)
Gingee	India	Record daily precipitation	100.0 mm (3.9 in)	46 of 100 (Notable)
Kunigal	India	Record daily precipitation	125.2 mm (4.9 in)	45 of 100 (Notable)
Srimushnam	India	Record daily precipitation	88.0 mm (3.5 in)	45 of 100 (Notable)
Ashland	United States	Record daily precipitation	48.8 mm (1.9 in)	45 of 100 (Notable)
Philippi	United States	Record daily precipitation	43.2 mm (1.7 in)	45 of 100 (Notable)
Mudigere	India	Record daily precipitation	53.3 mm (2.1 in)	44 of 100 (Notable)
Racine Dam 23	United States	Record daily precipitation	49.8 mm (2.0 in)	44 of 100 (Notable)
Gretna (Aut)	Canada	Record daily snowfall	5.6 cm (2.2 in)	43 of 100 (Notable)
Vriddhachalam	India	Record daily precipitation	164.0 mm (6.5 in)	43 of 100 (Notable)
Tullahoma	United States	Record daily precipitation	66.0 mm (2.6 in)	43 of 100 (Notable)
Kavali	India	Record daily precipitation	55.0 mm (2.2 in)	42 of 100 (Notable)
Sholingur	India	Record daily precipitation	59.6 mm (2.3 in)	42 of 100 (Notable)
Sao Jose de Mipibu	Brazil	Record daily precipitation	73.2 mm (2.9 in)	41 of 100 (Notable)
Boissevain	Canada	Record daily snowfall	10.2 cm (4.0 in)	41 of 100 (Notable)
Kolar	India	Record daily precipitation	63.5 mm (2.5 in)	41 of 100 (Notable)
Kurinjipadi	India	Record daily precipitation	107.0 mm (4.2 in)	41 of 100 (Notable)
Dharmapuri	India	Record daily precipitation	74.6 mm (2.9 in)	41 of 100 (Notable)
Tenkasi	India	Record daily precipitation	52.0 mm (2.0 in)	41 of 100 (Notable)
Weston	United States	Record daily precipitation	58.4 mm (2.3 in)	41 of 100 (Notable)
Indian Bay	Canada	Record daily snowfall	10.2 cm (4.0 in)	40 of 100 (Notable)
Maddur	India	Record daily precipitation	85.1 mm (3.4 in)	40 of 100 (Notable)
Sriperumbudur	India	Record daily precipitation	72.0 mm (2.8 in)	40 of 100 (Notable)
Milan	Italy	Record high minimum temperature	18.2 C (64.8 F)	40 of 100 (Notable)
Durham	United Kingdom	Record high maximum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Coldwater	United States	Record daily precipitation	56.9 mm (2.2 in)	40 of 100 (Notable)
Hvar	Croatia	Record high maximum temperature	26.5 C (79.7 F)	39 of 100 (Notable)
Gudur	India	Record daily precipitation	73.0 mm (2.9 in)	39 of 100 (Notable)
Palacode	India	Record daily precipitation	65.0 mm (2.6 in)	39 of 100 (Notable)
Gaddede	Sweden	Record snow depth	51.0 cm (20.1 in)	39 of 100 (Notable)
Alice	United States	Record daily precipitation	101.6 mm (4.0 in)	39 of 100 (Notable)
Laredo	United States	Record daily precipitation	65.8 mm (2.6 in)	39 of 100 (Notable)
Anahuac	Mexico	Record daily precipitation	65.8 mm (2.6 in)	38 of 100 (Notable)
Mestad I Oddernes	Norway	Record snow depth	66.0 cm (26.0 in)	38 of 100 (Notable)

Counts by Type and Timescale

707 records

Records set or tied on 1 May 1966 by type: Highest daily maximum 39, Lowest daily maximum 145, Highest daily minimum 39, Lowest daily minimum 118, Heaviest daily rainfall 327, Heaviest daily snowfall 28, Deepest snow cover 11.

Records on 1 May 1966 by type
Record type	Records
Highest daily maximum	39
Lowest daily maximum	145
Highest daily minimum	39
Lowest daily minimum	118
Heaviest daily rainfall	327
Heaviest daily snowfall	28
Deepest snow cover	11

Records on 1 May 1966 by timescale: all-time 1, monthly 74, daily 632.

How Much Records Were Beaten By

609 broken records

Margins by which the 609 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 340.0. Ties are not counted.

Top 20 by Significance

1 May 1966

Top 20 records on 1 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 1966	Hedrum, NO	monthly snow depth	38.0 cm (15.0 in)	34.0 cm (13.4 in)	65 years	70 of 100 (Major)
1 May 1966	Vanur, IN	daily rain	246.2 mm (9.7 in)	241.9 mm (9.5 in)	59 years	63 of 100 (Major)
1 May 1966	Nes Pa Hedmark, NO	monthly snow depth	26.0 cm (10.2 in)	26.0 cm (10.2 in)	64 years	61 of 100 (Major)
1 May 1966	Nord Odal, NO	monthly snow depth	49.0 cm (19.3 in)	22.0 cm (8.7 in)	36 years	59 of 100 (Notable)
1 May 1966	Saunur(Savnur), IN	daily rain	100.0 mm (3.9 in)	72.8 mm (2.9 in)	40 years	58 of 100 (Notable)
1 May 1966	Satyavedu, IN	daily rain	81.0 mm (3.2 in)	81.0 mm (3.2 in)	64 years	57 of 100 (Notable)
1 May 1966	Ravenswood Lock Park, US	daily rain	57.4 mm (2.3 in)	40.6 mm (1.6 in)	41 years	57 of 100 (Notable)
1 May 1966	Porto Novo, IN	daily rain	136.0 mm (5.4 in)	120.0 mm (4.7 in)	59 years	56 of 100 (Notable)
1 May 1966	Tiruppattur, IN	daily rain	93.0 mm (3.7 in)	84.4 mm (3.3 in)	24 years	53 of 100 (Notable)
1 May 1966	Pennagaram, IN	daily rain	109.0 mm (4.3 in)	72.2 mm (2.8 in)	25 years	53 of 100 (Notable)
1 May 1966	Alur, IN	daily rain	127.0 mm (5.0 in)	88.9 mm (3.5 in)	23 years	52 of 100 (Notable)
1 May 1966	Ulundurpet, IN	daily rain	116.0 mm (4.6 in)	84.2 mm (3.3 in)	55 years	52 of 100 (Notable)
1 May 1966	Narasimharajapura, IN	daily rain	76.2 mm (3.0 in)	49.5 mm (1.9 in)	48 years	51 of 100 (Notable)
1 May 1966	Cuddalore, IN	monthly rain	349.9 mm (13.8 in)	98.2 mm (3.9 in)	22 years	51 of 100 (Notable)
1 May 1966	Madurantakam, IN	daily rain	81.0 mm (3.2 in)	74.9 mm (2.9 in)	59 years	51 of 100 (Notable)
1 May 1966	Sveg, SE	monthly snow depth	46.0 cm (18.1 in)	19.0 cm (7.5 in)	15 years	51 of 100 (Notable)
1 May 1966	Ambur, IN	daily rain	88.0 mm (3.5 in)	73.5 mm (2.9 in)	15 years	50 of 100 (Notable)
1 May 1966	Camden 1, US	daily rain	143.0 mm (5.6 in)	104.4 mm (4.1 in)	8 years	50 of 100 (Notable)
1 May 1966	Gauribidanur, IN	daily rain	79.0 mm (3.1 in)	59.9 mm (2.4 in)	12 years	49 of 100 (Notable)
1 May 1966	Tiruvannamalai, IN	daily rain	110.0 mm (4.3 in)	60.7 mm (2.4 in)	55 years	49 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

1795 to 1966

Records set or tied on this calendar date in each year from 1795 to 1966. 1966 had 707 records.

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

Records on 05-01 in each year
Year	Records
1795	1
1802	1
1804	1
1814	1
1818	1
1835	1
1836	1
1840	1
1846	2
1847	1
1850	1
1851	1
1857	1
1860	1
1861	1
1864	2
1865	1
1868	2
1872	1
1875	4
1878	2
1879	2
1880	3
1881	2
1884	1
1885	1
1886	2
1887	2
1888	2
1889	3
1890	2
1891	5
1892	6
1893	2
1894	5
1896	1
1897	4
1898	1
1899	8
1900	1
1901	5
1902	7
1903	9
1904	9
1905	13
1906	12
1907	31
1908	20
1909	49
1910	13
1911	22
1912	18
1913	54
1914	23
1915	27
1916	27
1917	37
1918	34
1919	150
1920	186
1921	41
1922	92
1923	64
1924	63
1925	118
1926	500
1927	125
1928	190
1929	142
1930	263
1931	537
1932	220
1933	706
1934	305
1935	276
1936	368
1937	218
1938	304
1939	227
1940	731
1941	333
1942	1,036
1943	526
1944	229
1945	350
1946	415
1947	655
1948	774
1949	405
1950	439
1951	894
1952	557
1953	917
1954	1,506
1955	772
1956	1,106
1957	359
1958	448
1959	764
1960	737
1961	588
1962	615
1963	704
1964	312
1965	360
1966	707
1967	948
1968	426
1969	429
1970	1,075
1971	444
1972	562
1973	841
1974	589
1975	286
1976	673
1977	545
1978	1,202
1979	612
1980	507
1981	1,265
1982	508
1983	1,423
1984	640
1985	789
1986	512
1987	1,098
1988	1,058
1989	949
1990	922
1991	633
1992	1,201
1993	1,101
1994	1,210
1995	1,365
1996	1,439
1997	804
1998	951
1999	932
2000	809
2001	1,106
2002	1,221
2003	964
2004	887
2005	1,320
2006	734
2007	857
2008	979
2009	679
2010	1,151
2011	716
2012	796
2013	976
2014	941
2015	550
2016	844
2017	1,163
2018	519
2019	788
2020	1,099
2021	834
2022	319
2023	912
2024	458
2025	430
2026	623

Download the Data

Data for records on 1966-05-01: 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	557
50 to 100	40
100 to 150	4
150 to 200	3
200 to 250	3
250 to 300	1
300 to 350	1