Weather Records on 1 May 1964

312 weather records were set or tied worldwide on 1 May 1964. Highest significance: Acude Tucunduba, BR.

Key Facts for 1 May 1964

On 1 May 1964, 312 weather records were set or tied at long-record stations worldwide.
38 were record highs and 127 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 19 monthly and 293 daily.
Acude Tucunduba set a monthly record daily precipitation of 126.4 mm (5.0 in) on 1 May 1964.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 443 records.

Record Map

312 stations

312 station records on 1 May 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Acude Tucunduba	Brazil	Record daily precipitation	126.4 mm (5.0 in)	63 of 100 (Major)
Campania (the Pines)	Australia	Record daily precipitation	40.4 mm (1.6 in)	51 of 100 (Notable)
Cordillo Downs	Australia	Record daily precipitation	36.8 mm (1.4 in)	43 of 100 (Notable)
Astrakan	Russia	Record low maximum temperature	8.8 C (47.8 F)	41 of 100 (Notable)
Bundooma Railway Siding	Australia	Record daily precipitation	28.4 mm (1.1 in)	39 of 100 (Notable)
Selbu-Stubbe	Norway	Record daily precipitation	40.4 mm (1.6 in)	39 of 100 (Notable)
Brooksville Chin Hill	United States	Record daily precipitation	101.6 mm (4.0 in)	39 of 100 (Notable)
Saint Leo	United States	Record daily precipitation	80.0 mm (3.1 in)	39 of 100 (Notable)
Ogden Sugar Factory	United States	Record daily snowfall	7.6 cm (3.0 in)	39 of 100 (Notable)
Karmad	India	Record daily precipitation	58.0 mm (2.3 in)	38 of 100 (Notable)
Blackleaf	United States	Record daily precipitation	33.3 mm (1.3 in)	38 of 100 (Notable)
Kjobli I Snaasa	Norway	Record daily precipitation	38.4 mm (1.5 in)	37 of 100 (Notable)
Prospect 2 SW	United States	Record daily snowfall	7.6 cm (3.0 in)	37 of 100 (Notable)
Warsaw 2 NW	United States	Record low maximum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Lake Alfred Exp STN	United States	Record daily precipitation	83.8 mm (3.3 in)	35 of 100 (Notable)
Hambantota	Sri Lanka	Record high minimum temperature	27.1 C (80.8 F)	34 of 100 (Routine)
Weldon	United States	Record low maximum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	29.0 mm (1.1 in)	34 of 100 (Routine)
Boulia Airport	Australia	Record high maximum temperature	36.4 C (97.5 F)	33 of 100 (Routine)
Cedaredge	United States	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Ust-Hairyuzovo	Russia	Record low minimum temperature	-19.2 C (-2.6 F)	31 of 100 (Routine)
Nikolskoye/Beringa Ostrov	Russia	Record low minimum temperature	-7.8 C (18.0 F)	31 of 100 (Routine)
Cedar Key 1 WSW	United States	Record daily precipitation	30.5 mm (1.2 in)	30 of 100 (Routine)
College Park	United States	Record low maximum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Orlando Executive AP	United States	Record low maximum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Mandya	India	Record daily precipitation	60.0 mm (2.4 in)	29 of 100 (Routine)
Sidney 6NNW	United States	Record daily precipitation	30.5 mm (1.2 in)	29 of 100 (Routine)
Belvidere	United States	Record low maximum temperature	8.9 C (48.0 F)	29 of 100 (Routine)
Badiraguato (Smn)	Mexico	Record low minimum temperature	6.7 C (44.1 F)	28 of 100 (Routine)
Vastervik	Sweden	Record high minimum temperature	7.3 C (45.1 F)	28 of 100 (Routine)
Easton	United States	Record low maximum temperature	11.7 C (53.1 F)	28 of 100 (Routine)
Montrose	United States	Record daily precipitation	36.6 mm (1.4 in)	28 of 100 (Routine)
Claresholm Meadow Creek	Canada	Record daily precipitation	26.2 mm (1.0 in)	27 of 100 (Routine)
Cambridge Water Trmt P	United States	Record low maximum temperature	11.7 C (53.1 F)	27 of 100 (Routine)
Forest Grove	United States	Record low maximum temperature	10.6 C (51.1 F)	27 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record low minimum temperature	-5.6 C (21.9 F)	27 of 100 (Routine)
Agartala	India	Record daily precipitation	64.8 mm (2.6 in)	25 of 100 (Routine)
Solomons	United States	Record low maximum temperature	11.1 C (52.0 F)	25 of 100 (Routine)
Nashville	United States	Record low maximum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Nome AP	United States	Record low minimum temperature	-23.3 C (-9.9 F)	25 of 100 (Routine)
Nanjangud	India	Record daily precipitation	55.1 mm (2.2 in)	24 of 100 (Routine)
W Chester 2 NW	United States	Record low maximum temperature	7.8 C (46.0 F)	24 of 100 (Routine)
Hopewell	United States	Record low maximum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Ponte Guatapara	Brazil	Record daily precipitation	46.0 mm (1.8 in)	23 of 100 (Routine)
Kumily	India	Record daily precipitation	45.7 mm (1.8 in)	23 of 100 (Routine)
Bradenton Exp STN	United States	Record daily precipitation	32.0 mm (1.3 in)	23 of 100 (Routine)
Salisbury	United States	Record low maximum temperature	11.7 C (53.1 F)	23 of 100 (Routine)
Kearneysville	United States	Record low maximum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Hassan Obsy	India	Record daily precipitation	28.8 mm (1.1 in)	22 of 100 (Routine)
Pavagada	India	Record daily precipitation	35.6 mm (1.4 in)	22 of 100 (Routine)
Bridgeville 1 NW	United States	Record low maximum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Belleplain STN Forest	United States	Record low maximum temperature	11.1 C (52.0 F)	22 of 100 (Routine)
McKenzie Rvr Rs	United States	Record low maximum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Riddle	United States	Record low maximum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
Gettysburg	United States	Record low maximum temperature	9.4 C (48.9 F)	22 of 100 (Routine)
Tennant Creek Post Office	Australia	Record high minimum temperature	23.3 C (73.9 F)	21 of 100 (Routine)
Avon Park 2 W	United States	Record daily precipitation	30.5 mm (1.2 in)	21 of 100 (Routine)
La Plata 1 W	United States	Record low maximum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Laurel 3 W	United States	Record low maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Woodstock	United States	Record low maximum temperature	11.7 C (53.1 F)	21 of 100 (Routine)

Counts by Type and Timescale

312 records

Records set or tied on 1 May 1964 by type: Highest daily maximum 11, Lowest daily maximum 104, Highest daily minimum 27, Lowest daily minimum 23, Heaviest daily rainfall 128, Heaviest daily snowfall 16, Deepest snow cover 3.

Records on 1 May 1964 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	104
Highest daily minimum	27
Lowest daily minimum	23
Heaviest daily rainfall	128
Heaviest daily snowfall	16
Deepest snow cover	3

Records on 1 May 1964 by timescale: all-time 0, monthly 19, daily 293.

How Much Records Were Beaten By

252 broken records

Margins by which the 252 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

1 May 1964

Top 20 records on 1 May 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 1964	Acude Tucunduba, BR	monthly rain	126.4 mm (5.0 in)	46.4 mm (1.8 in)	47 years	63 of 100 (Major)
1 May 1964	Campania (the Pines), AU	daily rain	40.4 mm (1.6 in)	32.0 mm (1.3 in)	26 years	51 of 100 (Notable)
1 May 1964	Cordillo Downs, AU	daily rain	36.8 mm (1.4 in)	28.9 mm (1.1 in)	11 years	43 of 100 (Notable)
1 May 1964	Astrakan, RU	monthly low max	8.8 C (47.8 F)	0.4 C (0.7 F)	79 years	41 of 100 (Notable)
1 May 1964	Bundooma Railway Siding, AU	daily rain	28.4 mm (1.1 in)	27.1 mm (1.1 in)	11 years	39 of 100 (Notable)
1 May 1964	Selbu-Stubbe, NO	monthly rain	40.4 mm (1.6 in)	7.1 mm (0.28 in)	25 years	39 of 100 (Notable)
1 May 1964	Brooksville Chin Hill, US	monthly rain	101.6 mm (4.0 in)	12.2 mm (0.5 in)	48 years	39 of 100 (Notable)
1 May 1964	Saint Leo, US	daily rain	80.0 mm (3.1 in)	20.3 mm (0.8 in)	64 years	39 of 100 (Notable)
1 May 1964	Ogden Sugar Factory, US	monthly snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	36 years	39 of 100 (Notable)
1 May 1964	Karmad, IN	daily rain	58.0 mm (2.3 in)	45.3 mm (1.8 in)	19 years	38 of 100 (Notable)
1 May 1964	Blackleaf, US	daily rain	33.3 mm (1.3 in)	20.6 mm (0.8 in)	49 years	38 of 100 (Notable)
1 May 1964	Kjobli I Snaasa, NO	monthly rain	38.4 mm (1.5 in)	5.5 mm (0.22 in)	20 years	37 of 100 (Notable)
1 May 1964	Prospect 2 SW, US	monthly snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	54 years	37 of 100 (Notable)
1 May 1964	Warsaw 2 NW, US	daily low max	11.1 C (52.0 F)	4.5 C (8.1 F)	68 years	36 of 100 (Notable)
1 May 1964	Lake Alfred Exp STN, US	daily rain	83.8 mm (3.3 in)	40.4 mm (1.6 in)	15 years	35 of 100 (Notable)
1 May 1964	Hambantota, LK	daily high min	27.1 C (80.8 F)	0.4 C (0.7 F)	75 years	34 of 100 (Routine)
1 May 1964	Weldon, US	daily low max	15.0 C (59.0 F)	2.8 C (5.0 F)	68 years	34 of 100 (Routine)
1 May 1964	Atlantic City Marina, US	daily rain	29.0 mm (1.1 in)	8.4 mm (0.33 in)	55 years	34 of 100 (Routine)
1 May 1964	Boulia Airport, AU	daily high max	36.4 C (97.5 F)	1.7 C (3.1 F)	74 years	33 of 100 (Routine)
1 May 1964	Cedaredge, US	daily rain	26.9 mm (1.1 in)	11.9 mm (0.5 in)	10 years	32 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

1795 to 1964

Records set or tied on this calendar date in each year from 1795 to 1964. 1964 had 312 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 1964-05-01: 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 10	200
10 to 20	31
20 to 30	13
30 to 40	3
40 to 50	3
50 to 60	0
60 to 70	0
70 to 80	2