Weather Records on 21 May 2001

1,187 weather records were set or tied worldwide on 21 May 2001. Highest significance: Salem, US.

Key Facts for 21 May 2001

On 21 May 2001, 1,187 weather records were set or tied at long-record stations worldwide.
553 were record highs and 285 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 27 monthly and 1,156 daily.
Salem set a daily record precipitation of 83.6 mm (3.3 in) on 21 May 2001.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 456 records.

Record Map

1,187 stations

1,187 station records on 21 May 2001 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 2001: highest significance records shown on the map
Station	Country	Type	Value	Significance
Salem	United States	Record daily precipitation	83.6 mm (3.3 in)	74 of 100 (Major)
Covington 3 SW	United States	Record daily precipitation	85.3 mm (3.4 in)	67 of 100 (Major)
Ballina (Crowley Village)	Australia	Record daily precipitation	251.0 mm (9.9 in)	66 of 100 (Major)
Baldwin	United States	Record daily precipitation	49.5 mm (1.9 in)	66 of 100 (Major)
Norsk	Russia	Record daily precipitation	28.9 mm (1.1 in)	63 of 100 (Major)
Tecolutla	Mexico	Record daily precipitation	127.3 mm (5.0 in)	59 of 100 (Notable)
Richland Ctr	United States	Record daily precipitation	65.0 mm (2.6 in)	56 of 100 (Notable)
Aledo	United States	Record daily precipitation	45.7 mm (1.8 in)	55 of 100 (Notable)
Becanchen	Mexico	Record high minimum temperature	27.8 C (82.0 F)	51 of 100 (Notable)
Iowa Falls	United States	Record daily precipitation	50.0 mm (2.0 in)	51 of 100 (Notable)
Aberdeen	United States	Record daily precipitation	63.8 mm (2.5 in)	51 of 100 (Notable)
Clarion	United States	Record daily precipitation	92.7 mm (3.6 in)	50 of 100 (Notable)
Wamsutter	United States	Record daily snowfall	5.1 cm (2.0 in)	50 of 100 (Notable)
Guttenberg L&D 10	United States	Record daily precipitation	59.4 mm (2.3 in)	49 of 100 (Notable)
Meerschaumvale (Meerschaum Val	Australia	Record daily precipitation	140.0 mm (5.5 in)	48 of 100 (Notable)
Castle Rock	United States	Record low minimum temperature	-7.2 C (19.0 F)	48 of 100 (Notable)
Harrisburg	United States	Record daily precipitation	27.2 mm (1.1 in)	46 of 100 (Notable)
Lake City	United States	Record daily precipitation	33.8 mm (1.3 in)	46 of 100 (Notable)
Holter Dam	United States	Record low minimum temperature	-3.9 C (25.0 F)	46 of 100 (Notable)
Morrilton	United States	Record daily precipitation	62.2 mm (2.4 in)	45 of 100 (Notable)
Woodland 1 WNW	United States	Record high minimum temperature	23.9 C (75.0 F)	45 of 100 (Notable)
Webster City	United States	Record daily precipitation	77.5 mm (3.1 in)	45 of 100 (Notable)
San Salvador El Seco	Mexico	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Wauchula	United States	Record daily precipitation	73.7 mm (2.9 in)	44 of 100 (Notable)
Galena	United States	Record daily precipitation	46.7 mm (1.8 in)	44 of 100 (Notable)
Hohenwald	United States	Record daily precipitation	74.9 mm (2.9 in)	44 of 100 (Notable)
Kookabookra	Australia	Record daily precipitation	25.2 mm (1.0 in)	43 of 100 (Notable)
Casino Airport	Australia	Record daily precipitation	33.6 mm (1.3 in)	43 of 100 (Notable)
Breckenridge	United States	Record daily snowfall	10.2 cm (4.0 in)	43 of 100 (Notable)
Sanborn	United States	Record daily precipitation	49.8 mm (2.0 in)	43 of 100 (Notable)
Archer	United States	Record low minimum temperature	-6.1 C (21.0 F)	43 of 100 (Notable)
Cut Bank AP	United States	Record low minimum temperature	-4.4 C (24.1 F)	43 of 100 (Notable)
Ebor (Glenowen)	Australia	Record daily precipitation	45.0 mm (1.8 in)	42 of 100 (Notable)
Woolgoolga (Clear Place)	Australia	Record daily precipitation	83.0 mm (3.3 in)	42 of 100 (Notable)
Searcy	United States	Record daily precipitation	73.2 mm (2.9 in)	42 of 100 (Notable)
Vacaville	United States	Record high minimum temperature	23.9 C (75.0 F)	42 of 100 (Notable)
Brodhead Wwtp	United States	Record daily precipitation	34.5 mm (1.4 in)	42 of 100 (Notable)
Xochitlan Todos Santos	Mexico	Record high maximum temperature	40.0 C (104.0 F)	41 of 100 (Notable)
Wasco	United States	Record high minimum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Sibley	United States	Record daily precipitation	35.8 mm (1.4 in)	41 of 100 (Notable)
St James Wwtp	United States	Record daily precipitation	53.8 mm (2.1 in)	41 of 100 (Notable)
Canton 4N	United States	Record high minimum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
St Marys 3 W	United States	Record daily precipitation	86.9 mm (3.4 in)	41 of 100 (Notable)
Mc Curtain 1 SE	United States	Record daily precipitation	103.4 mm (4.1 in)	41 of 100 (Notable)
Sierra Blanca 2 E	United States	Record low maximum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Green Rvr	United States	Record low minimum temperature	-6.1 C (21.0 F)	41 of 100 (Notable)
Blue Mtn Dam	United States	Record daily precipitation	96.0 mm (3.8 in)	40 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Mineral	United States	Record high minimum temperature	9.4 C (48.9 F)	40 of 100 (Notable)
Lake Providence	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Junction 4SSW	United States	Record low minimum temperature	4.4 C (39.9 F)	40 of 100 (Notable)
Wayne 2	United States	Record daily precipitation	62.2 mm (2.4 in)	40 of 100 (Notable)
Woodburn Post Office	Australia	Record daily precipitation	76.8 mm (3.0 in)	39 of 100 (Notable)
Aquismon	Mexico	Record daily precipitation	132.8 mm (5.2 in)	39 of 100 (Notable)
Calhoun 2 N	United States	Record high minimum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Byllesby 1 S	United States	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Muskegon Co AP	United States	Record daily precipitation	35.1 mm (1.4 in)	39 of 100 (Notable)
Alstonville Tropical Fruit Res	Australia	Record daily precipitation	92.0 mm (3.6 in)	38 of 100 (Notable)
Tuapse	Russia	Record daily precipitation	37.2 mm (1.5 in)	38 of 100 (Notable)
Auburn	United States	Record high minimum temperature	21.1 C (70.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

1,187 records

Records set or tied on 21 May 2001 by type: Highest daily maximum 255, Lowest daily maximum 61, Highest daily minimum 298, Lowest daily minimum 224, Heaviest daily rainfall 317, Heaviest daily snowfall 21, Deepest snow cover 11.

Records on 21 May 2001 by type
Record type	Records
Highest daily maximum	255
Lowest daily maximum	61
Highest daily minimum	298
Lowest daily minimum	224
Heaviest daily rainfall	317
Heaviest daily snowfall	21
Deepest snow cover	11

Records on 21 May 2001 by timescale: all-time 4, monthly 27, daily 1,156.

How Much Records Were Beaten By

932 broken records

Margins by which the 932 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 185.0. Ties are not counted.

Top 20 by Significance

21 May 2001

Top 20 records on 21 May 2001 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 2001	Salem, US	daily rain	83.6 mm (3.3 in)	54.9 mm (2.2 in)	84 years	74 of 100 (Major)
21 May 2001	Covington 3 SW, US	daily rain	85.3 mm (3.4 in)	49.7 mm (2.0 in)	84 years	67 of 100 (Major)
21 May 2001	Ballina (Crowley Village), AU	daily rain	251.0 mm (9.9 in)	185.0 mm (7.3 in)	56 years	66 of 100 (Major)
21 May 2001	Baldwin, US	daily rain	49.5 mm (1.9 in)	24.1 mm (0.9 in)	96 years	66 of 100 (Major)
21 May 2001	Norsk, RU	daily rain	28.9 mm (1.1 in)	19.9 mm (0.8 in)	70 years	63 of 100 (Major)
21 May 2001	Tecolutla, MX	daily rain	127.3 mm (5.0 in)	107.5 mm (4.2 in)	40 years	59 of 100 (Notable)
21 May 2001	Richland Ctr, US	daily rain	65.0 mm (2.6 in)	49.8 mm (2.0 in)	24 years	56 of 100 (Notable)
21 May 2001	Aledo, US	daily rain	45.7 mm (1.8 in)	22.1 mm (0.9 in)	86 years	55 of 100 (Notable)
21 May 2001	Becanchen, MX	all-time high min	27.8 C (82.0 F)	2.2 C (4.0 F)	48 years	51 of 100 (Notable)
21 May 2001	Iowa Falls, US	daily rain	50.0 mm (2.0 in)	16.2 mm (0.6 in)	92 years	51 of 100 (Notable)
21 May 2001	Aberdeen, US	daily rain	63.8 mm (2.5 in)	22.9 mm (0.9 in)	90 years	51 of 100 (Notable)
21 May 2001	Clarion, US	monthly rain	92.7 mm (3.6 in)	33.3 mm (1.3 in)	11 years	50 of 100 (Notable)
21 May 2001	Wamsutter, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	102 years	50 of 100 (Notable)
21 May 2001	Guttenberg L&D 10, US	daily rain	59.4 mm (2.3 in)	36.5 mm (1.4 in)	24 years	49 of 100 (Notable)
21 May 2001	Meerschaumvale (Meerschaum Val, AU	daily rain	140.0 mm (5.5 in)	93.0 mm (3.7 in)	18 years	48 of 100 (Notable)
21 May 2001	Castle Rock, US	daily low min	-7.2 C (19.0 F)	4.4 C (7.9 F)	92 years	48 of 100 (Notable)
21 May 2001	Harrisburg, US	daily rain	27.2 mm (1.1 in)	9.4 mm (0.37 in)	102 years	46 of 100 (Notable)
21 May 2001	Lake City, US	daily rain	33.8 mm (1.3 in)	7.9 mm (0.31 in)	102 years	46 of 100 (Notable)
21 May 2001	Holter Dam, US	daily low min	-3.9 C (25.0 F)	3.3 C (5.9 F)	98 years	46 of 100 (Notable)
21 May 2001	Morrilton, US	daily rain	62.2 mm (2.4 in)	42.9 mm (1.7 in)	46 years	45 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

1793 to 2001

Records set or tied on this calendar date in each year from 1793 to 2001. 2001 had 1,187 records.

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

Records on 05-21 in each year
Year	Records
1793	1
1795	1
1811	1
1837	2
1842	1
1847	2
1854	1
1857	1
1858	1
1865	1
1866	1
1870	2
1875	1
1876	1
1880	2
1882	1
1885	1
1886	2
1887	3
1889	5
1890	3
1891	6
1892	1
1893	1
1894	4
1895	4
1896	5
1897	2
1898	1
1899	5
1900	1
1901	3
1902	4
1903	26
1904	8
1905	7
1906	12
1907	36
1908	13
1909	13
1910	14
1911	87
1912	24
1913	13
1914	26
1915	24
1916	13
1917	76
1918	51
1919	170
1920	39
1921	158
1922	39
1923	125
1924	148
1925	250
1926	221
1927	207
1928	173
1929	247
1930	133
1931	488
1932	343
1933	290
1934	590
1935	190
1936	328
1937	227
1938	348
1939	355
1940	456
1941	525
1942	482
1943	463
1944	310
1945	515
1946	324
1947	485
1948	312
1949	593
1950	403
1951	271
1952	385
1953	501
1954	961
1955	507
1956	409
1957	709
1958	511
1959	684
1960	615
1961	306
1962	553
1963	598
1964	788
1965	238
1966	296
1967	1,022
1968	549
1969	832
1970	449
1971	536
1972	557
1973	493
1974	847
1975	1,160
1976	393
1977	756
1978	575
1979	787
1980	857
1981	1,550
1982	599
1983	1,106
1984	950
1985	610
1986	908
1987	1,242
1988	819
1989	671
1990	947
1991	1,065
1992	1,143
1993	1,197
1994	656
1995	749
1996	1,461
1997	953
1998	1,200
1999	544
2000	897
2001	1,187
2002	2,048
2003	807
2004	898
2005	1,020
2006	810
2007	894
2008	740
2009	1,315
2010	962
2011	959
2012	848
2013	884
2014	522
2015	956
2016	567
2017	780
2018	525
2019	1,668
2020	707
2021	1,131
2022	1,512
2023	794
2024	751
2025	776
2026	356

Download the Data

Data for records on 2001-05-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 25	867
25 to 50	43
50 to 75	11
75 to 100	7
100 to 125	3
125 to 150	0
150 to 175	0
175 to 200	1