Weather Records on 1 May 1975

286 weather records were set or tied worldwide on 1 May 1975. Highest significance: Chemult, US.

Key Facts for 1 May 1975

On 1 May 1975, 286 weather records were set or tied at long-record stations worldwide.
73 were record highs and 78 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 269 daily.
Chemult set a monthly record snow depth of 55.9 cm (22.0 in) on 1 May 1975.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 443 records.

Record Map

286 stations

286 station records on 1 May 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chemult	United States	Record snow depth	55.9 cm (22.0 in)	59 of 100 (Notable)
Ariri	Brazil	Record daily precipitation	276.9 mm (10.9 in)	58 of 100 (Notable)
Buxton	United Kingdom	Record daily precipitation	35.2 mm (1.4 in)	53 of 100 (Notable)
Nguiu	Australia	Record daily precipitation	53.1 mm (2.1 in)	46 of 100 (Notable)
Paragonah	United States	Record low minimum temperature	-8.3 C (17.1 F)	44 of 100 (Notable)
Songkhla	Thailand	Record daily precipitation	60.3 mm (2.4 in)	40 of 100 (Notable)
Hebgen Dam	United States	Record snow depth	96.5 cm (38.0 in)	36 of 100 (Notable)
New Cumberland L/D	United States	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
Uniao Dos Palmares	Brazil	Record daily precipitation	62.8 mm (2.5 in)	35 of 100 (Notable)
Fleming	United States	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Chapel Hill 2 W	United States	Record low maximum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Arrojado	Brazil	Record daily precipitation	88.4 mm (3.5 in)	34 of 100 (Routine)
Apizaco	Mexico	Record daily precipitation	32.3 mm (1.3 in)	34 of 100 (Routine)
Charlevoix	United States	Record daily precipitation	36.1 mm (1.4 in)	34 of 100 (Routine)
Chestertown	United States	Record low maximum temperature	11.1 C (52.0 F)	33 of 100 (Routine)
Cape May 2 NW	United States	Record low maximum temperature	11.1 C (52.0 F)	33 of 100 (Routine)
Milford 2 SE	United States	Record low maximum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Pocomoke City	United States	Record low maximum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Allende (Smn)	Mexico	Record low minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Standard	United States	Record daily precipitation	52.1 mm (2.1 in)	30 of 100 (Routine)
Buenos Aires Observ	Argentina	Record low maximum temperature	12.4 C (54.3 F)	29 of 100 (Routine)
Moncure 3 SE	United States	Record low maximum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Lexington	United States	Record low maximum temperature	16.7 C (62.1 F)	28 of 100 (Routine)
Ovre Sirdal	Norway	Record daily precipitation	27.0 mm (1.1 in)	27 of 100 (Routine)
Moyoguarda	Mexico	Record daily precipitation	30.0 mm (1.2 in)	26 of 100 (Routine)
Tustin Irvine Rch	United States	Record low minimum temperature	3.3 C (37.9 F)	26 of 100 (Routine)
Oaknolia 2N	United States	Record daily precipitation	66.0 mm (2.6 in)	26 of 100 (Routine)
Astrakan	Russia	Record high minimum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Reserve	United States	Record daily precipitation	64.3 mm (2.5 in)	25 of 100 (Routine)
Millington 1 SE	United States	Record low maximum temperature	11.7 C (53.1 F)	25 of 100 (Routine)
Albemarle	United States	Record low maximum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Island Park	United States	Record snow depth	134.6 cm (53.0 in)	24 of 100 (Routine)
Amite	United States	Record daily precipitation	66.0 mm (2.6 in)	24 of 100 (Routine)
Vanderbilt 11ENE	United States	Record daily precipitation	29.5 mm (1.2 in)	24 of 100 (Routine)
Risnes I Fjotland	Norway	Record daily precipitation	30.6 mm (1.2 in)	23 of 100 (Routine)
Wauchula	United States	Record high maximum temperature	35.6 C (96.1 F)	23 of 100 (Routine)
Catawba Hospital	United States	Record low maximum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Sete Barras	Brazil	Record daily precipitation	34.7 mm (1.4 in)	22 of 100 (Routine)
Arhangelsk	Russia	Record high minimum temperature	7.9 C (46.2 F)	22 of 100 (Routine)
Brevard	United States	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Mercedes	Uruguay	Record low maximum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Kem-Port	Russia	Record high minimum temperature	4.5 C (40.1 F)	21 of 100 (Routine)
Don Muang	Thailand	Record low minimum temperature	22.0 C (71.6 F)	21 of 100 (Routine)
Arcadia	United States	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Franklin	United States	Record daily precipitation	36.3 mm (1.4 in)	21 of 100 (Routine)
Melville	United States	Record daily precipitation	94.7 mm (3.7 in)	21 of 100 (Routine)
Anderson	United States	Record daily precipitation	49.0 mm (1.9 in)	21 of 100 (Routine)
Tamdy	Uzbekistan	Record high minimum temperature	24.7 C (76.5 F)	21 of 100 (Routine)
Maseskar	Sweden	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Borzja	Russia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Rostov-Na-Donu	Russia	Record daily precipitation	20.5 mm (0.8 in)	20 of 100 (Routine)
Buynaksk	Russia	Record daily precipitation	20.9 mm (0.8 in)	20 of 100 (Routine)
Taganrog (Lighthouse)	Russia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Heden	Sweden	Record daily precipitation	18.4 mm (0.7 in)	20 of 100 (Routine)
Challis	United States	Record daily snowfall	0.8 cm (0.3 in)	20 of 100 (Routine)
Toliman	Mexico	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Rosella Plains Station	Australia	Record daily precipitation	13.8 mm (0.5 in)	20 of 100 (Routine)
Stavanger - Valand	Norway	Record daily precipitation	17.4 mm (0.7 in)	20 of 100 (Routine)
Solomons	United States	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)
Kustanai	Kazakhstan	Record daily precipitation	11.6 mm (0.5 in)	20 of 100 (Routine)

Counts by Type and Timescale

286 records

Records set or tied on 1 May 1975 by type: Highest daily maximum 38, Lowest daily maximum 48, Highest daily minimum 35, Lowest daily minimum 30, Heaviest daily rainfall 121, Heaviest daily snowfall 7, Deepest snow cover 7.

Records on 1 May 1975 by type
Record type	Records
Highest daily maximum	38
Lowest daily maximum	48
Highest daily minimum	35
Lowest daily minimum	30
Heaviest daily rainfall	121
Heaviest daily snowfall	7
Deepest snow cover	7

Records on 1 May 1975 by timescale: all-time 0, monthly 17, daily 269.

How Much Records Were Beaten By

224 broken records

Margins by which the 224 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 508.0. Ties are not counted.

Top 20 by Significance

1 May 1975

Top 20 records on 1 May 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 1975	Chemult, US	monthly snow depth	55.9 cm (22.0 in)	50.8 cm (20.0 in)	21 years	59 of 100 (Notable)
1 May 1975	Ariri, BR	monthly rain	276.9 mm (10.9 in)	90.1 mm (3.5 in)	16 years	58 of 100 (Notable)
1 May 1975	Buxton, GB	daily rain	35.2 mm (1.4 in)	22.8 mm (0.9 in)	13 years	53 of 100 (Notable)
1 May 1975	Nguiu, AU	daily rain	53.1 mm (2.1 in)	26.4 mm (1.0 in)	60 years	46 of 100 (Notable)
1 May 1975	Paragonah, US	monthly low min	-8.3 C (17.1 F)	1.6 C (2.9 F)	75 years	44 of 100 (Notable)
1 May 1975	Songkhla, TH	daily rain	60.3 mm (2.4 in)	40.5 mm (1.6 in)	20 years	40 of 100 (Notable)
1 May 1975	Hebgen Dam, US	monthly snow depth	96.5 cm (38.0 in)	5.1 cm (2.0 in)	57 years	36 of 100 (Notable)
1 May 1975	New Cumberland L/D, US	daily rain	30.0 mm (1.2 in)	10.7 mm (0.4 in)	56 years	36 of 100 (Notable)
1 May 1975	Uniao Dos Palmares, BR	daily rain	62.8 mm (2.5 in)	30.6 mm (1.2 in)	34 years	35 of 100 (Notable)
1 May 1975	Fleming, US	daily rain	31.8 mm (1.3 in)	9.4 mm (0.37 in)	79 years	35 of 100 (Notable)
1 May 1975	Chapel Hill 2 W, US	daily low max	15.6 C (60.1 F)	2.2 C (4.0 F)	79 years	35 of 100 (Notable)
1 May 1975	Arrojado, BR	daily rain	88.4 mm (3.5 in)	28.9 mm (1.1 in)	37 years	34 of 100 (Routine)
1 May 1975	Apizaco, MX	daily rain	32.3 mm (1.3 in)	20.6 mm (0.8 in)	16 years	34 of 100 (Routine)
1 May 1975	Charlevoix, US	daily rain	36.1 mm (1.4 in)	3.1 mm (0.12 in)	76 years	34 of 100 (Routine)
1 May 1975	Chestertown, US	daily low max	11.1 C (52.0 F)	1.1 C (2.0 F)	78 years	33 of 100 (Routine)
1 May 1975	Cape May 2 NW, US	daily low max	11.1 C (52.0 F)	0.6 C (1.1 F)	78 years	33 of 100 (Routine)
1 May 1975	Milford 2 SE, US	daily low max	12.8 C (55.0 F)	0.5 C (0.9 F)	78 years	32 of 100 (Routine)
1 May 1975	Pocomoke City, US	daily low max	12.8 C (55.0 F)	0.5 C (0.9 F)	79 years	32 of 100 (Routine)
1 May 1975	Allende (Smn), MX	daily low min	7.8 C (46.0 F)	2.2 C (4.0 F)	65 years	31 of 100 (Routine)
1 May 1975	Standard, US	daily rain	52.1 mm (2.1 in)	49.6 mm (2.0 in)	17 years	30 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 1975

Records set or tied on this calendar date in each year from 1795 to 1975. 1975 had 286 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 1975-05-01: 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 100	222
100 to 200	0
200 to 300	1
300 to 400	0
400 to 500	0
500 to 600	1