Weather Records on 21 May 2000

897 weather records were set or tied worldwide on 21 May 2000. Highest significance: Temascal, MX.

Key Facts for 21 May 2000

On 21 May 2000, 897 weather records were set or tied at long-record stations worldwide.
478 were record highs and 229 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 26 monthly and 870 daily.
Temascal set an all-time record daily precipitation of 330.5 mm (13.0 in) on 21 May 2000.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 458 records.

Record Map

897 stations

897 station records on 21 May 2000 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 2000: highest significance records shown on the map
Station	Country	Type	Value	Significance
Temascal	Mexico	Record daily precipitation	330.5 mm (13.0 in)	74 of 100 (Major)
Demopolis L&D	United States	Record daily precipitation	75.7 mm (3.0 in)	57 of 100 (Notable)
El Grito	Mexico	Record daily precipitation	61.5 mm (2.4 in)	50 of 100 (Notable)
Puente Jula	Mexico	Record daily precipitation	128.3 mm (5.1 in)	50 of 100 (Notable)
Patna	India	Record daily precipitation	54.1 mm (2.1 in)	49 of 100 (Notable)
Las Flores	Mexico	Record daily precipitation	82.6 mm (3.3 in)	48 of 100 (Notable)
Cernigov	Ukraine	Record daily precipitation	36.0 mm (1.4 in)	48 of 100 (Notable)
Telpatlan	Mexico	Record daily precipitation	43.4 mm (1.7 in)	47 of 100 (Notable)
Elsinore	United States	Record high maximum temperature	40.6 C (105.1 F)	47 of 100 (Notable)
Brackettville	United States	Record low minimum temperature	9.4 C (48.9 F)	47 of 100 (Notable)
El Sabino	Mexico	Record daily precipitation	54.9 mm (2.2 in)	46 of 100 (Notable)
Greensboro	United States	Record daily precipitation	56.4 mm (2.2 in)	46 of 100 (Notable)
San Rafael-Civic Ctr	United States	Record high maximum temperature	36.7 C (98.1 F)	46 of 100 (Notable)
Alvin	United States	Record high maximum temperature	37.2 C (99.0 F)	46 of 100 (Notable)
Atotonilco	Mexico	Record daily precipitation	35.8 mm (1.4 in)	45 of 100 (Notable)
Los Gatos	United States	Record high maximum temperature	37.2 C (99.0 F)	45 of 100 (Notable)
Ojocaliente	Mexico	Record daily precipitation	39.4 mm (1.6 in)	43 of 100 (Notable)
Logansport Cicott St	United States	Record low maximum temperature	13.3 C (55.9 F)	43 of 100 (Notable)
Oakland Intl AP	United States	Record high maximum temperature	33.9 C (93.0 F)	42 of 100 (Notable)
Calera	United States	Record daily precipitation	45.7 mm (1.8 in)	41 of 100 (Notable)
Riverside Fire STN 3	United States	Record high maximum temperature	40.6 C (105.1 F)	41 of 100 (Notable)
Smithfield	United States	Record low minimum temperature	5.0 C (41.0 F)	41 of 100 (Notable)
El Burrero	Mexico	Record daily precipitation	81.0 mm (3.2 in)	40 of 100 (Notable)
Pasadena	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Albion	United States	Record low maximum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Mohonk Lake	United States	Record low maximum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Boquilla Numero Uno	Mexico	Record low maximum temperature	25.6 C (78.1 F)	39 of 100 (Notable)
Napa State Hospital	United States	Record high maximum temperature	36.7 C (98.1 F)	39 of 100 (Notable)
Brackettville	United States	Record low maximum temperature	21.1 C (70.0 F)	39 of 100 (Notable)
Montevallo	United States	Record daily precipitation	45.2 mm (1.8 in)	38 of 100 (Notable)
Anaconda	United States	Record high minimum temperature	8.9 C (48.0 F)	38 of 100 (Notable)
Hiram	United States	Record low maximum temperature	10.0 C (50.0 F)	38 of 100 (Notable)
Talisman I	Mexico	Record daily precipitation	160.3 mm (6.3 in)	37 of 100 (Notable)
San Pedro del Gallo (Smn)	Mexico	Record low maximum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
San Pedro	Mexico	Record daily precipitation	88.4 mm (3.5 in)	37 of 100 (Notable)
Uniontown	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
Anniston Metro AP	United States	Record daily precipitation	53.8 mm (2.1 in)	37 of 100 (Notable)
San Francisco Dwtn	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Manlio Fabio Altamiramo	Mexico	Record daily precipitation	59.9 mm (2.4 in)	35 of 100 (Notable)
Belhaven 1 SE	United States	Record high maximum temperature	32.8 C (91.0 F)	35 of 100 (Notable)
Gold Beach Rs	United States	Record high maximum temperature	25.6 C (78.1 F)	35 of 100 (Notable)
Despoblado	Mexico	Record daily precipitation	130.3 mm (5.1 in)	34 of 100 (Routine)
Huehuetlan El Grande	Mexico	Record daily precipitation	36.8 mm (1.4 in)	34 of 100 (Routine)
Hawley 1 E	United States	Record low maximum temperature	7.8 C (46.0 F)	34 of 100 (Routine)
Villa de Chiapilla	Mexico	Record daily precipitation	59.9 mm (2.4 in)	33 of 100 (Routine)
El Tizate	Mexico	Record low maximum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Udon Thani	Thailand	Record low maximum temperature	22.7 C (72.9 F)	33 of 100 (Routine)
Flemington 5 NNW	United States	Record low maximum temperature	11.1 C (52.0 F)	33 of 100 (Routine)
Somerville 4 NW	United States	Record low maximum temperature	10.6 C (51.1 F)	33 of 100 (Routine)
Arcola	United States	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
St George	United States	Record high maximum temperature	37.8 C (100.0 F)	33 of 100 (Routine)
Presa Jocoque	Mexico	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Palenque (Dge)	Mexico	Record daily precipitation	105.9 mm (4.2 in)	32 of 100 (Routine)
Udon Thani	Thailand	Record low minimum temperature	20.5 C (68.9 F)	32 of 100 (Routine)
Mammoth Spring	United States	Record low maximum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Dillon U of Montana Western	United States	Record high minimum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
W Chester 2 NW	United States	Record low maximum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Aiken 5SE	United States	Record high minimum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
Biskra	Algeria	Record high minimum temperature	24.1 C (75.4 F)	31 of 100 (Routine)
Marshall	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)

Counts by Type and Timescale

897 records

Records set or tied on 21 May 2000 by type: Highest daily maximum 240, Lowest daily maximum 153, Highest daily minimum 238, Lowest daily minimum 76, Heaviest daily rainfall 190.

Records on 21 May 2000 by type
Record type	Records
Highest daily maximum	240
Lowest daily maximum	153
Highest daily minimum	238
Lowest daily minimum	76
Heaviest daily rainfall	190
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 May 2000 by timescale: all-time 1, monthly 26, daily 870.

How Much Records Were Beaten By

684 broken records

Margins by which the 684 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 111.5. Ties are not counted.

Top 20 by Significance

21 May 2000

Top 20 records on 21 May 2000 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 2000	Temascal, MX	all-time rain	330.5 mm (13.0 in)	87.2 mm (3.4 in)	37 years	74 of 100 (Major)
21 May 2000	Demopolis L&D, US	daily rain	75.7 mm (3.0 in)	58.4 mm (2.3 in)	45 years	57 of 100 (Notable)
21 May 2000	El Grito, MX	daily rain	61.5 mm (2.4 in)	46.8 mm (1.8 in)	26 years	50 of 100 (Notable)
21 May 2000	Puente Jula, MX	daily rain	128.3 mm (5.1 in)	111.5 mm (4.4 in)	18 years	50 of 100 (Notable)
21 May 2000	Patna, IN	daily rain	54.1 mm (2.1 in)	48.0 mm (1.9 in)	15 years	49 of 100 (Notable)
21 May 2000	Las Flores, MX	daily rain	82.6 mm (3.3 in)	63.3 mm (2.5 in)	25 years	48 of 100 (Notable)
21 May 2000	Cernigov, UA	daily rain	36.0 mm (1.4 in)	16.7 mm (0.7 in)	44 years	48 of 100 (Notable)
21 May 2000	Telpatlan, MX	daily rain	43.4 mm (1.7 in)	31.0 mm (1.2 in)	10 years	47 of 100 (Notable)
21 May 2000	Elsinore, US	daily high max	40.6 C (105.1 F)	3.9 C (7.0 F)	100 years	47 of 100 (Notable)
21 May 2000	Brackettville, US	daily low min	9.4 C (48.9 F)	3.4 C (6.1 F)	96 years	47 of 100 (Notable)
21 May 2000	El Sabino, MX	daily rain	54.9 mm (2.2 in)	30.0 mm (1.2 in)	22 years	46 of 100 (Notable)
21 May 2000	Greensboro, US	daily rain	56.4 mm (2.2 in)	17.5 mm (0.7 in)	90 years	46 of 100 (Notable)
21 May 2000	San Rafael-Civic Ctr, US	daily high max	36.7 C (98.1 F)	3.9 C (7.0 F)	96 years	46 of 100 (Notable)
21 May 2000	Alvin, US	monthly high max	37.2 C (99.0 F)	0.5 C (0.9 F)	88 years	46 of 100 (Notable)
21 May 2000	Atotonilco, MX	daily rain	35.8 mm (1.4 in)	24.1 mm (0.9 in)	30 years	45 of 100 (Notable)
21 May 2000	Los Gatos, US	daily high max	37.2 C (99.0 F)	2.8 C (5.0 F)	102 years	45 of 100 (Notable)
21 May 2000	Ojocaliente, MX	daily rain	39.4 mm (1.6 in)	28.5 mm (1.1 in)	36 years	43 of 100 (Notable)
21 May 2000	Logansport Cicott St, US	daily low max	13.3 C (55.9 F)	2.3 C (4.1 F)	100 years	43 of 100 (Notable)
21 May 2000	Oakland Intl AP, US	daily high max	33.9 C (93.0 F)	9.5 C (17.1 F)	41 years	42 of 100 (Notable)
21 May 2000	Calera, US	daily rain	45.7 mm (1.8 in)	4.3 mm (0.17 in)	99 years	41 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 2000

Records set or tied on this calendar date in each year from 1793 to 2000. 2000 had 897 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 2000-05-21: 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 2026-10-13 (13 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 20	649
20 to 40	23
40 to 60	8
60 to 80	2
80 to 100	1
100 to 120	1