Weather Records on 1 May 1973

841 weather records were set or tied worldwide on 1 May 1973. Highest significance: Horsham Polkemmet Rd, AU.

Key Facts for 1 May 1973

On 1 May 1973, 841 weather records were set or tied at long-record stations worldwide.
127 were record highs and 55 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 37 monthly and 803 daily.
Horsham Polkemmet Rd set a monthly record daily precipitation of 58.4 mm (2.3 in) on 1 May 1973.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 440 records.

Record Map

841 stations

841 station records on 1 May 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Horsham Polkemmet Rd	Australia	Record daily precipitation	58.4 mm (2.3 in)	74 of 100 (Major)
Brinkworth (Bungaree)	Australia	Record daily precipitation	40.1 mm (1.6 in)	68 of 100 (Major)
Breckenridge	United States	Record daily snowfall	33.0 cm (13.0 in)	65 of 100 (Major)
Coulta	Australia	Record daily precipitation	48.5 mm (1.9 in)	63 of 100 (Major)
Stokes	Australia	Record daily precipitation	33.0 mm (1.3 in)	62 of 100 (Major)
Groom Creek	United States	Record daily precipitation	38.1 mm (1.5 in)	62 of 100 (Major)
Port Lincoln (Big Swamp)	Australia	Record daily precipitation	40.4 mm (1.6 in)	61 of 100 (Major)
Koppio	Australia	Record daily precipitation	43.7 mm (1.7 in)	61 of 100 (Major)
Bathurst Gaol	Australia	Record daily precipitation	51.1 mm (2.0 in)	61 of 100 (Major)
Yalwal	Australia	Record daily precipitation	60.2 mm (2.4 in)	61 of 100 (Major)
Warracknabeal (Ailsa)	Australia	Record daily precipitation	38.6 mm (1.5 in)	61 of 100 (Major)
Arno Bay	Australia	Record daily precipitation	25.4 mm (1.0 in)	60 of 100 (Major)
Cummins	Australia	Record daily precipitation	36.3 mm (1.4 in)	60 of 100 (Major)
Port Neill	Australia	Record daily precipitation	27.9 mm (1.1 in)	60 of 100 (Major)
Tumby Bay	Australia	Record daily precipitation	38.6 mm (1.5 in)	60 of 100 (Major)
Lithgow (Birdwood St)	Australia	Record daily precipitation	40.1 mm (1.6 in)	60 of 100 (Major)
Port Lincoln	Australia	Record daily precipitation	34.8 mm (1.4 in)	59 of 100 (Notable)
Longerenong	Australia	Record daily precipitation	48.5 mm (1.9 in)	59 of 100 (Notable)
Yallunda Flat (Meetigilly)	Australia	Record daily precipitation	35.6 mm (1.4 in)	58 of 100 (Notable)
Kenmare	Australia	Record daily precipitation	31.5 mm (1.2 in)	58 of 100 (Notable)
O'Connell (Stratford)	Australia	Record daily precipitation	50.0 mm (2.0 in)	57 of 100 (Notable)
Darke Peak	Australia	Record daily precipitation	28.2 mm (1.1 in)	56 of 100 (Notable)
Tumby Bay (Warratta Vale)	Australia	Record daily precipitation	29.2 mm (1.1 in)	56 of 100 (Notable)
Kadina	Australia	Record daily precipitation	30.2 mm (1.2 in)	56 of 100 (Notable)
Kit Carson	United States	Record daily snowfall	25.4 cm (10.0 in)	56 of 100 (Notable)
Marquette	United States	Record daily precipitation	57.2 mm (2.3 in)	56 of 100 (Notable)
Wallaroo	Australia	Record daily precipitation	29.7 mm (1.2 in)	55 of 100 (Notable)
Oberon (Springbank)	Australia	Record daily precipitation	51.1 mm (2.0 in)	55 of 100 (Notable)
Brim	Australia	Record daily precipitation	29.7 mm (1.2 in)	55 of 100 (Notable)
Bute	Australia	Record daily precipitation	31.8 mm (1.3 in)	54 of 100 (Notable)
Minnipa	Australia	Record daily precipitation	30.2 mm (1.2 in)	53 of 100 (Notable)
Mount Wedge	Australia	Record daily precipitation	26.7 mm (1.1 in)	53 of 100 (Notable)
Mendooran Post Office	Australia	Record daily precipitation	56.4 mm (2.2 in)	53 of 100 (Notable)
Alva 1W	United States	Record daily precipitation	65.0 mm (2.6 in)	53 of 100 (Notable)
Jackson	United States	Record daily snowfall	20.3 cm (8.0 in)	53 of 100 (Notable)
Lake City	United States	Record daily precipitation	88.9 mm (3.5 in)	52 of 100 (Notable)
Port Lincoln (Woolga)	Australia	Record daily precipitation	36.8 mm (1.4 in)	51 of 100 (Notable)
Warrumbungle Post Office	Australia	Record daily precipitation	52.1 mm (2.1 in)	51 of 100 (Notable)
Black Springs (Swatchfield)	Australia	Record daily precipitation	54.1 mm (2.1 in)	51 of 100 (Notable)
Jeparit	Australia	Record daily precipitation	27.2 mm (1.1 in)	51 of 100 (Notable)
Brinkworth	Australia	Record daily precipitation	30.5 mm (1.2 in)	50 of 100 (Notable)
Beulah	Australia	Record daily precipitation	27.4 mm (1.1 in)	50 of 100 (Notable)
Running Stream (Brooklyn)	Australia	Record daily precipitation	76.2 mm (3.0 in)	49 of 100 (Notable)
Rockley Post Office	Australia	Record daily precipitation	45.5 mm (1.8 in)	49 of 100 (Notable)
Aledo	United States	Record daily precipitation	50.8 mm (2.0 in)	49 of 100 (Notable)
Ungarra	Australia	Record daily precipitation	28.2 mm (1.1 in)	48 of 100 (Notable)
Geneseo	United States	Record daily precipitation	50.0 mm (2.0 in)	48 of 100 (Notable)
New Boston Dam 17	United States	Record daily precipitation	64.8 mm (2.6 in)	48 of 100 (Notable)
Zumbrota	United States	Record daily precipitation	78.0 mm (3.1 in)	48 of 100 (Notable)
Cygnet River	Australia	Record daily precipitation	28.4 mm (1.1 in)	47 of 100 (Notable)
Binnaway (Wattle St)	Australia	Record daily precipitation	39.1 mm (1.5 in)	47 of 100 (Notable)
Longmont 2 ESE	United States	Record daily snowfall	10.2 cm (4.0 in)	46 of 100 (Notable)
Mount Wudinna	Australia	Record daily precipitation	27.4 mm (1.1 in)	45 of 100 (Notable)
Port Lincoln (White Flat)	Australia	Record daily precipitation	29.2 mm (1.1 in)	45 of 100 (Notable)
Snowtown (Condowie)	Australia	Record daily precipitation	26.2 mm (1.0 in)	45 of 100 (Notable)
Ilford (Tara)	Australia	Record daily precipitation	59.2 mm (2.3 in)	45 of 100 (Notable)
Keosauqua	United States	Record daily precipitation	52.6 mm (2.1 in)	45 of 100 (Notable)
Faribault	United States	Record daily precipitation	72.6 mm (2.9 in)	45 of 100 (Notable)
Table Rock 4N	United States	Record daily precipitation	69.9 mm (2.8 in)	45 of 100 (Notable)
Casper 2 E	United States	Record daily snowfall	14.5 cm (5.7 in)	45 of 100 (Notable)

Counts by Type and Timescale

841 records

Records set or tied on 1 May 1973 by type: Highest daily maximum 41, Lowest daily maximum 29, Highest daily minimum 86, Lowest daily minimum 26, Heaviest daily rainfall 621, Heaviest daily snowfall 35, Deepest snow cover 3.

Records on 1 May 1973 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	29
Highest daily minimum	86
Lowest daily minimum	26
Heaviest daily rainfall	621
Heaviest daily snowfall	35
Deepest snow cover	3

Records on 1 May 1973 by timescale: all-time 1, monthly 37, daily 803.

How Much Records Were Beaten By

764 broken records

Margins by which the 764 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

1 May 1973

Top 20 records on 1 May 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 1973	Horsham Polkemmet Rd, AU	monthly rain	58.4 mm (2.3 in)	17.3 mm (0.7 in)	89 years	74 of 100 (Major)
1 May 1973	Brinkworth (Bungaree), AU	daily rain	40.1 mm (1.6 in)	26.6 mm (1.0 in)	85 years	68 of 100 (Major)
1 May 1973	Breckenridge, US	daily snowfall	33.0 cm (13.0 in)	25.4 cm (10.0 in)	66 years	65 of 100 (Major)
1 May 1973	Coulta, AU	daily rain	48.5 mm (1.9 in)	31.5 mm (1.2 in)	47 years	63 of 100 (Major)
1 May 1973	Stokes, AU	daily rain	33.0 mm (1.3 in)	23.9 mm (0.9 in)	47 years	62 of 100 (Major)
1 May 1973	Groom Creek, US	monthly rain	38.1 mm (1.5 in)	21.1 mm (0.8 in)	25 years	62 of 100 (Major)
1 May 1973	Port Lincoln (Big Swamp), AU	daily rain	40.4 mm (1.6 in)	27.7 mm (1.1 in)	47 years	61 of 100 (Major)
1 May 1973	Koppio, AU	daily rain	43.7 mm (1.7 in)	30.5 mm (1.2 in)	47 years	61 of 100 (Major)
1 May 1973	Bathurst Gaol, AU	daily rain	51.1 mm (2.0 in)	19.3 mm (0.8 in)	95 years	61 of 100 (Major)
1 May 1973	Yalwal, AU	daily rain	60.2 mm (2.4 in)	51.3 mm (2.0 in)	47 years	61 of 100 (Major)
1 May 1973	Warracknabeal (Ailsa), AU	daily rain	38.6 mm (1.5 in)	31.2 mm (1.2 in)	47 years	61 of 100 (Major)
1 May 1973	Arno Bay, AU	daily rain	25.4 mm (1.0 in)	19.3 mm (0.8 in)	47 years	60 of 100 (Major)
1 May 1973	Cummins, AU	daily rain	36.3 mm (1.4 in)	23.6 mm (0.9 in)	47 years	60 of 100 (Major)
1 May 1973	Port Neill, AU	daily rain	27.9 mm (1.1 in)	21.3 mm (0.8 in)	47 years	60 of 100 (Major)
1 May 1973	Tumby Bay, AU	daily rain	38.6 mm (1.5 in)	29.7 mm (1.2 in)	47 years	60 of 100 (Major)
1 May 1973	Lithgow (Birdwood St), AU	daily rain	40.1 mm (1.6 in)	33.2 mm (1.3 in)	80 years	60 of 100 (Major)
1 May 1973	Port Lincoln, AU	daily rain	34.8 mm (1.4 in)	16.0 mm (0.6 in)	47 years	59 of 100 (Notable)
1 May 1973	Longerenong, AU	daily rain	48.5 mm (1.9 in)	32.0 mm (1.3 in)	32 years	59 of 100 (Notable)
1 May 1973	Yallunda Flat (Meetigilly), AU	daily rain	35.6 mm (1.4 in)	22.6 mm (0.9 in)	47 years	58 of 100 (Notable)
1 May 1973	Kenmare, AU	daily rain	31.5 mm (1.2 in)	22.6 mm (0.9 in)	47 years	58 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 1973

Records set or tied on this calendar date in each year from 1795 to 1973. 1973 had 841 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 1973-05-01: 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	743
50 to 100	15
100 to 150	4
150 to 200	1
200 to 250	0
250 to 300	1