Weather Records on 21 May 2010

962 weather records were set or tied worldwide on 21 May 2010. Highest significance: Stampede Pass, US.

Key Facts for 21 May 2010

On 21 May 2010, 962 weather records were set or tied at long-record stations worldwide.
548 were record highs and 248 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 23 monthly and 934 daily.
Stampede Pass set a daily record precipitation of 58.2 mm (2.3 in) on 21 May 2010.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 457 records.

Record Map

962 stations

962 station records on 21 May 2010 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 2010: highest significance records shown on the map
Station	Country	Type	Value	Significance
Stampede Pass	United States	Record daily precipitation	58.2 mm (2.3 in)	65 of 100 (Major)
Elista	Russia	Record daily precipitation	43.8 mm (1.7 in)	59 of 100 (Notable)
Coldwater St School	United States	Record daily precipitation	83.8 mm (3.3 in)	58 of 100 (Notable)
Gholson 8 W	United States	Record daily precipitation	105.9 mm (4.2 in)	55 of 100 (Notable)
Centralia	United States	Record daily precipitation	25.4 mm (1.0 in)	52 of 100 (Notable)
Washington 1 W	United States	Record daily precipitation	63.0 mm (2.5 in)	51 of 100 (Notable)
Laurel	United States	Record daily precipitation	61.7 mm (2.4 in)	51 of 100 (Notable)
Haggarda	Sweden	Record daily precipitation	45.8 mm (1.8 in)	50 of 100 (Notable)
Vasteras-Hasslo	Sweden	Record high minimum temperature	15.2 C (59.4 F)	48 of 100 (Notable)
Ostra_Amtervik	Sweden	Record daily precipitation	31.0 mm (1.2 in)	46 of 100 (Notable)
Pomeroy	United States	Record low minimum temperature	-4.4 C (24.1 F)	45 of 100 (Notable)
Springvale	Australia	Record daily precipitation	38.0 mm (1.5 in)	44 of 100 (Notable)
Fagre	Sweden	Record daily precipitation	30.7 mm (1.2 in)	44 of 100 (Notable)
Gallatin 1W	United States	Record daily precipitation	44.5 mm (1.8 in)	44 of 100 (Notable)
Norra_Stroo	Sweden	Record daily precipitation	31.6 mm (1.2 in)	43 of 100 (Notable)
Mamakan	Russia	Record daily precipitation	25.0 mm (1.0 in)	42 of 100 (Notable)
Olastorp	Sweden	Record daily precipitation	26.3 mm (1.0 in)	42 of 100 (Notable)
Buxton	United Kingdom	Record high maximum temperature	24.4 C (75.9 F)	42 of 100 (Notable)
Goshen 3SW	United States	Record daily precipitation	35.1 mm (1.4 in)	42 of 100 (Notable)
Vale	United States	Record low maximum temperature	12.8 C (55.0 F)	42 of 100 (Notable)
S Bend AP	United States	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Lexington Bluegrass AP	United States	Record daily precipitation	53.6 mm (2.1 in)	42 of 100 (Notable)
Armagh	United Kingdom	Record high maximum temperature	24.5 C (76.1 F)	41 of 100 (Notable)
Salem AP (McNary Field)	United States	Record low maximum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Cuernavaca (Dge)	Mexico	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Lulea-Bergnaset	Sweden	Record high minimum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Armagh	United Kingdom	Record high minimum temperature	13.7 C (56.7 F)	40 of 100 (Notable)
Vinslov_D	Sweden	Record daily precipitation	25.9 mm (1.0 in)	39 of 100 (Notable)
Durham	United Kingdom	Record high maximum temperature	26.0 C (78.8 F)	39 of 100 (Notable)
Fraccionamiento Callejones	Mexico	Record low minimum temperature	7.8 C (46.0 F)	38 of 100 (Notable)
Bradford	United Kingdom	Record high maximum temperature	26.2 C (79.2 F)	38 of 100 (Notable)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	38.9 C (102.0 F)	37 of 100 (Notable)
Bratsk	Russia	Record low minimum temperature	-5.4 C (22.3 F)	37 of 100 (Notable)
Malung	Sweden	Record high minimum temperature	10.4 C (50.7 F)	37 of 100 (Notable)
St Petersburg	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
Huntsville	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Wensleydale (Anglesea (Vehicle	Australia	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Korkodon	Russia	Record high minimum temperature	11.9 C (53.4 F)	36 of 100 (Notable)
Mangalore/Bajpe	India	Record high minimum temperature	28.2 C (82.8 F)	35 of 100 (Notable)
Harnosand	Sweden	Record high minimum temperature	11.4 C (52.5 F)	35 of 100 (Notable)
Priest Rvr Exp STN	United States	Record low minimum temperature	-3.9 C (25.0 F)	35 of 100 (Notable)
Jasper	United States	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Bethany	United States	Record low maximum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Headworks Portland Wtr B	United States	Record low maximum temperature	8.9 C (48.0 F)	35 of 100 (Notable)
Ostrovnoe	Russia	Record high maximum temperature	22.5 C (72.5 F)	34 of 100 (Routine)
Varne	Sweden	Record daily precipitation	27.3 mm (1.1 in)	34 of 100 (Routine)
Bevill L&D	United States	Record daily precipitation	55.4 mm (2.2 in)	34 of 100 (Routine)
Dubois Exp STN	United States	Record low minimum temperature	-2.8 C (27.0 F)	34 of 100 (Routine)
Singuilucan	Mexico	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
San Miguel Chimalapa	Mexico	Record low minimum temperature	1.7 C (35.1 F)	33 of 100 (Routine)
Falun	Sweden	Record high minimum temperature	11.4 C (52.5 F)	33 of 100 (Routine)
Paisley	United Kingdom	Record high minimum temperature	13.1 C (55.6 F)	33 of 100 (Routine)
Colfax	United States	Record low maximum temperature	10.0 C (50.0 F)	33 of 100 (Routine)
Adrian 2 NNE	United States	Record daily precipitation	45.0 mm (1.8 in)	33 of 100 (Routine)
Niamey Aero	Niger	Record low maximum temperature	33.1 C (91.6 F)	32 of 100 (Routine)
Wick	United Kingdom	Record high maximum temperature	17.9 C (64.2 F)	32 of 100 (Routine)
Westmoreland	United States	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Kuressaare	Estonia	Record high minimum temperature	16.6 C (61.9 F)	31 of 100 (Routine)
Barnaul	Russia	Record low minimum temperature	-3.6 C (25.5 F)	31 of 100 (Routine)
Remontnoe	Russia	Record daily precipitation	41.8 mm (1.6 in)	31 of 100 (Routine)

Counts by Type and Timescale

962 records

Records set or tied on 21 May 2010 by type: Highest daily maximum 299, Lowest daily maximum 158, Highest daily minimum 249, Lowest daily minimum 90, Heaviest daily rainfall 165, Heaviest daily snowfall 1.

Records on 21 May 2010 by type
Record type	Records
Highest daily maximum	299
Lowest daily maximum	158
Highest daily minimum	249
Lowest daily minimum	90
Heaviest daily rainfall	165
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 21 May 2010 by timescale: all-time 5, monthly 23, daily 934.

How Much Records Were Beaten By

736 broken records

Margins by which the 736 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 90.7. Ties are not counted.

Top 20 by Significance

21 May 2010

Top 20 records on 21 May 2010 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 2010	Stampede Pass, US	daily rain	58.2 mm (2.3 in)	30.3 mm (1.2 in)	65 years	65 of 100 (Major)
21 May 2010	Elista, RU	daily rain	43.8 mm (1.7 in)	32.4 mm (1.3 in)	36 years	59 of 100 (Notable)
21 May 2010	Coldwater St School, US	daily rain	83.8 mm (3.3 in)	46.5 mm (1.8 in)	28 years	58 of 100 (Notable)
21 May 2010	Gholson 8 W, US	daily rain	105.9 mm (4.2 in)	90.7 mm (3.6 in)	27 years	55 of 100 (Notable)
21 May 2010	Centralia, US	daily rain	25.4 mm (1.0 in)	6.3 mm (0.25 in)	104 years	52 of 100 (Notable)
21 May 2010	Washington 1 W, US	daily rain	63.0 mm (2.5 in)	26.2 mm (1.0 in)	72 years	51 of 100 (Notable)
21 May 2010	Laurel, US	daily rain	61.7 mm (2.4 in)	26.1 mm (1.0 in)	93 years	51 of 100 (Notable)
21 May 2010	Haggarda, SE	monthly rain	45.8 mm (1.8 in)	9.3 mm (0.37 in)	56 years	50 of 100 (Notable)
21 May 2010	Vasteras-Hasslo, SE	monthly high min	15.2 C (59.4 F)	0.7 C (1.3 F)	92 years	48 of 100 (Notable)
21 May 2010	Ostra_Amtervik, SE	daily rain	31.0 mm (1.2 in)	16.9 mm (0.7 in)	40 years	46 of 100 (Notable)
21 May 2010	Pomeroy, US	daily low min	-4.4 C (24.1 F)	2.2 C (4.0 F)	107 years	45 of 100 (Notable)
21 May 2010	Springvale, AU	daily rain	38.0 mm (1.5 in)	36.4 mm (1.4 in)	12 years	44 of 100 (Notable)
21 May 2010	Fagre, SE	daily rain	30.7 mm (1.2 in)	16.4 mm (0.6 in)	27 years	44 of 100 (Notable)
21 May 2010	Gallatin 1W, US	daily rain	44.5 mm (1.8 in)	6.9 mm (0.27 in)	107 years	44 of 100 (Notable)
21 May 2010	Norra_Stroo, SE	daily rain	31.6 mm (1.2 in)	18.5 mm (0.7 in)	12 years	43 of 100 (Notable)
21 May 2010	Mamakan, RU	daily rain	25.0 mm (1.0 in)	8.7 mm (0.34 in)	43 years	42 of 100 (Notable)
21 May 2010	Olastorp, SE	daily rain	26.3 mm (1.0 in)	8.1 mm (0.32 in)	56 years	42 of 100 (Notable)
21 May 2010	Buxton, GB	daily high max	24.4 C (75.9 F)	1.0 C (1.8 F)	120 years	42 of 100 (Notable)
21 May 2010	Goshen 3SW, US	daily rain	35.1 mm (1.4 in)	14.8 mm (0.6 in)	63 years	42 of 100 (Notable)
21 May 2010	Vale, US	daily low max	12.8 C (55.0 F)	1.1 C (2.0 F)	104 years	42 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 2010

Records set or tied on this calendar date in each year from 1793 to 2010. 2010 had 962 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 2010-05-21: 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 20	720
20 to 40	13
40 to 60	2
60 to 80	0
80 to 100	1