Weather Records on 1 May 2021

834 weather records were set or tied worldwide on 1 May 2021. Highest significance: Austwell, US.

Key Facts for 1 May 2021

On 1 May 2021, 834 weather records were set or tied at long-record stations worldwide.
614 were record highs and 70 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 822 daily.
Austwell set a daily record precipitation of 109.7 mm (4.3 in) on 1 May 2021.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 440 records.

Record Map

834 stations

834 station records on 1 May 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Austwell	United States	Record daily precipitation	109.7 mm (4.3 in)	79 of 100 (Major)
Columbus	United States	Record daily precipitation	145.5 mm (5.7 in)	76 of 100 (Major)
El Campo	United States	Record daily precipitation	116.8 mm (4.6 in)	61 of 100 (Major)
Rockport	United States	Record daily precipitation	137.9 mm (5.4 in)	58 of 100 (Notable)
Mukdahan	Thailand	Record daily precipitation	113.3 mm (4.5 in)	56 of 100 (Notable)
Speaks 2	United States	Record daily precipitation	124.5 mm (4.9 in)	56 of 100 (Notable)
Lake Placid 2 S	United States	Record daily snowfall	11.4 cm (4.5 in)	53 of 100 (Notable)
Rocksprings	United States	Record daily precipitation	55.6 mm (2.2 in)	52 of 100 (Notable)
Van Reenen	South Africa	Record daily precipitation	35.1 mm (1.4 in)	50 of 100 (Notable)
Cuero	United States	Record daily precipitation	76.5 mm (3.0 in)	49 of 100 (Notable)
Junction Kimble Co AP	United States	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Pemfling-Pitzling	Germany	Record daily precipitation	31.6 mm (1.2 in)	47 of 100 (Notable)
Hallettsville 2 N	United States	Record daily precipitation	107.2 mm (4.2 in)	46 of 100 (Notable)
Jerome	United States	Record high minimum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Danevang 1 W	United States	Record daily precipitation	81.0 mm (3.2 in)	45 of 100 (Notable)
Upton	United States	Record high minimum temperature	15.6 C (60.1 F)	45 of 100 (Notable)
Summit	United States	Record high minimum temperature	7.8 C (46.0 F)	44 of 100 (Notable)
Cambridge	United States	Record high minimum temperature	12.2 C (54.0 F)	43 of 100 (Notable)
Colebrook 3SW	United States	Record daily precipitation	38.6 mm (1.5 in)	43 of 100 (Notable)
Lake Placid 2 S	United States	Record daily precipitation	39.1 mm (1.5 in)	43 of 100 (Notable)
Panther Junction	United States	Record low maximum temperature	13.3 C (55.9 F)	43 of 100 (Notable)
Flossenburg	Germany	Record daily precipitation	33.5 mm (1.3 in)	42 of 100 (Notable)
Orlando Executive AP	United States	Record high minimum temperature	22.8 C (73.0 F)	42 of 100 (Notable)
Como	Australia	Record daily precipitation	150.0 mm (5.9 in)	41 of 100 (Notable)
Imperial	United States	Record high minimum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
First Connecticut Lake	United States	Record daily precipitation	35.1 mm (1.4 in)	41 of 100 (Notable)
Schulenburg	United States	Record daily precipitation	106.4 mm (4.2 in)	41 of 100 (Notable)
Logan Utah St UNIV	United States	Record high maximum temperature	26.7 C (80.1 F)	41 of 100 (Notable)
Riddle	United States	Record high minimum temperature	12.2 C (54.0 F)	40 of 100 (Notable)
Goldendale	United States	Record high minimum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Weiden	Germany	Record daily precipitation	29.1 mm (1.1 in)	39 of 100 (Notable)
Gabes	Tunisia	Record high minimum temperature	21.8 C (71.2 F)	39 of 100 (Notable)
McCook	United States	Record daily precipitation	59.7 mm (2.4 in)	39 of 100 (Notable)
Wamsutter	United States	Record high maximum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Marseilles-Marignane	France	Record daily precipitation	26.6 mm (1.0 in)	37 of 100 (Notable)
Schwandorf	Germany	Record daily precipitation	33.5 mm (1.3 in)	37 of 100 (Notable)
Sirte	Libya	Record high minimum temperature	25.5 C (77.9 F)	37 of 100 (Notable)
Glenns Ferry	United States	Record high minimum temperature	13.9 C (57.0 F)	37 of 100 (Notable)
Tonopah	United States	Record high maximum temperature	30.0 C (86.0 F)	37 of 100 (Notable)
Jefferson	United States	Record daily precipitation	33.8 mm (1.3 in)	37 of 100 (Notable)
Fraser Island Eurong	Australia	Record daily precipitation	70.4 mm (2.8 in)	36 of 100 (Notable)
Tirschenreuth-Lodermuhl	Germany	Record daily precipitation	26.6 mm (1.0 in)	36 of 100 (Notable)
Kise Pa Hedmark	Norway	Record low minimum temperature	-3.9 C (25.0 F)	36 of 100 (Notable)
Aberdeen Exp STN	United States	Record high maximum temperature	29.4 C (84.9 F)	36 of 100 (Notable)
Thermopolis	United States	Record high minimum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Lookout Pt Dam	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Amistad Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Nixon	United States	Record daily precipitation	76.2 mm (3.0 in)	35 of 100 (Notable)
Richmond	United States	Record high minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Utah Lake Lehi	United States	Record high maximum temperature	29.4 C (84.9 F)	35 of 100 (Notable)
S Lincoln	United States	Record daily precipitation	32.8 mm (1.3 in)	35 of 100 (Notable)
Wiseman	United States	Record low maximum temperature	-1.1 C (30.0 F)	35 of 100 (Notable)
Tianjin	China	Record low minimum temperature	4.1 C (39.4 F)	34 of 100 (Routine)
Matuku	Fiji	Record daily precipitation	84.7 mm (3.3 in)	34 of 100 (Routine)
Shelby	United States	Record high minimum temperature	10.6 C (51.1 F)	34 of 100 (Routine)
Malone	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Chisos Basin	United States	Record daily precipitation	25.1 mm (1.0 in)	34 of 100 (Routine)
Leo 6 SW	United States	Record high minimum temperature	6.7 C (44.1 F)	34 of 100 (Routine)
Freystadt-Oberndorf	Germany	Record daily precipitation	29.8 mm (1.2 in)	33 of 100 (Routine)
Regensburg-Burgweinting	Germany	Record daily precipitation	31.6 mm (1.2 in)	33 of 100 (Routine)

Counts by Type and Timescale

834 records

Records set or tied on 1 May 2021 by type: Highest daily maximum 268, Lowest daily maximum 21, Highest daily minimum 346, Lowest daily minimum 49, Heaviest daily rainfall 133, Heaviest daily snowfall 11, Deepest snow cover 6.

Records on 1 May 2021 by type
Record type	Records
Highest daily maximum	268
Lowest daily maximum	21
Highest daily minimum	346
Lowest daily minimum	49
Heaviest daily rainfall	133
Heaviest daily snowfall	11
Deepest snow cover	6

Records on 1 May 2021 by timescale: all-time 0, monthly 12, daily 822.

How Much Records Were Beaten By

682 broken records

Margins by which the 682 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.0. Ties are not counted.

Top 20 by Significance

1 May 2021

Top 20 records on 1 May 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 2021	Austwell, US	daily rain	109.7 mm (4.3 in)	93.2 mm (3.7 in)	99 years	79 of 100 (Major)
1 May 2021	Columbus, US	daily rain	145.5 mm (5.7 in)	84.5 mm (3.3 in)	110 years	76 of 100 (Major)
1 May 2021	El Campo, US	daily rain	116.8 mm (4.6 in)	85.8 mm (3.4 in)	59 years	61 of 100 (Major)
1 May 2021	Rockport, US	daily rain	137.9 mm (5.4 in)	88.6 mm (3.5 in)	47 years	58 of 100 (Notable)
1 May 2021	Mukdahan, TH	daily rain	113.3 mm (4.5 in)	70.4 mm (2.8 in)	32 years	56 of 100 (Notable)
1 May 2021	Speaks 2, US	daily rain	124.5 mm (4.9 in)	81.6 mm (3.2 in)	52 years	56 of 100 (Notable)
1 May 2021	Lake Placid 2 S, US	monthly snowfall	11.4 cm (4.5 in)	1.2 cm (0.5 in)	110 years	53 of 100 (Notable)
1 May 2021	Rocksprings, US	daily rain	55.6 mm (2.2 in)	27.4 mm (1.1 in)	87 years	52 of 100 (Notable)
1 May 2021	Van Reenen, ZA	daily rain	35.1 mm (1.4 in)	17.6 mm (0.7 in)	78 years	50 of 100 (Notable)
1 May 2021	Cuero, US	daily rain	76.5 mm (3.0 in)	20.6 mm (0.8 in)	116 years	49 of 100 (Notable)
1 May 2021	Junction Kimble Co AP, US	daily rain	47.5 mm (1.9 in)	29.2 mm (1.1 in)	64 years	48 of 100 (Notable)
1 May 2021	Pemfling-Pitzling, DE	daily rain	31.6 mm (1.2 in)	16.8 mm (0.7 in)	38 years	47 of 100 (Notable)
1 May 2021	Hallettsville 2 N, US	daily rain	107.2 mm (4.2 in)	53.9 mm (2.1 in)	42 years	46 of 100 (Notable)
1 May 2021	Jerome, US	daily high min	12.2 C (54.0 F)	2.8 C (5.0 F)	94 years	45 of 100 (Notable)
1 May 2021	Danevang 1 W, US	daily rain	81.0 mm (3.2 in)	12.4 mm (0.5 in)	114 years	45 of 100 (Notable)
1 May 2021	Upton, US	daily high min	15.6 C (60.1 F)	3.4 C (6.1 F)	95 years	45 of 100 (Notable)
1 May 2021	Summit, US	daily high min	7.8 C (46.0 F)	5.6 C (10.1 F)	64 years	44 of 100 (Notable)
1 May 2021	Cambridge, US	daily high min	12.2 C (54.0 F)	2.2 C (4.0 F)	94 years	43 of 100 (Notable)
1 May 2021	Colebrook 3SW, US	daily rain	38.6 mm (1.5 in)	22.9 mm (0.9 in)	47 years	43 of 100 (Notable)
1 May 2021	Lake Placid 2 S, US	daily rain	39.1 mm (1.5 in)	15.7 mm (0.6 in)	38 years	43 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 2021

Records set or tied on this calendar date in each year from 1795 to 2021. 2021 had 834 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 2021-05-01: 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 20	642
20 to 40	25
40 to 60	7
60 to 80	1
80 to 100	5
100 to 120	2