Weather Records on 20 May 2010

1,011 weather records were set or tied worldwide on 20 May 2010. Highest significance: Orebro, SE.

Key Facts for 20 May 2010

On 20 May 2010, 1,011 weather records were set or tied at long-record stations worldwide.
510 were record highs and 232 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 29 monthly and 978 daily.
Orebro set a daily record precipitation of 40.1 mm (1.6 in) on 20 May 2010.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 452 records.

Record Map

1,011 stations

1,011 station records on 20 May 2010 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 2010: highest significance records shown on the map
Station	Country	Type	Value	Significance
Orebro	Sweden	Record daily precipitation	40.1 mm (1.6 in)	80 of 100 (Exceptional)
Great Bend 3WNW	United States	Record daily precipitation	73.7 mm (2.9 in)	69 of 100 (Major)
Cascadia	United States	Record daily precipitation	50.8 mm (2.0 in)	65 of 100 (Major)
Heden	Sweden	Record daily precipitation	59.8 mm (2.4 in)	62 of 100 (Major)
Nyhammar	Sweden	Record daily precipitation	48.6 mm (1.9 in)	58 of 100 (Notable)
Flahult	Sweden	Record daily precipitation	27.0 mm (1.1 in)	55 of 100 (Notable)
Sater_D	Sweden	Record daily precipitation	34.1 mm (1.3 in)	55 of 100 (Notable)
Korsberga	Sweden	Record daily precipitation	31.7 mm (1.2 in)	54 of 100 (Notable)
Pacific	United States	Record daily precipitation	50.8 mm (2.0 in)	53 of 100 (Notable)
Claflin	United States	Record daily precipitation	75.4 mm (3.0 in)	52 of 100 (Notable)
Guthrie 5S	United States	Record daily precipitation	103.1 mm (4.1 in)	51 of 100 (Notable)
Lawrence	United States	Record daily precipitation	40.9 mm (1.6 in)	50 of 100 (Notable)
Kakinada	India	Record daily precipitation	105.9 mm (4.2 in)	49 of 100 (Notable)
Kindsjon_D	Sweden	Record daily precipitation	31.2 mm (1.2 in)	48 of 100 (Notable)
Calico Rock 2 WSW	United States	Record daily precipitation	55.9 mm (2.2 in)	48 of 100 (Notable)
Cassville 1 NE	United States	Record daily precipitation	43.7 mm (1.7 in)	48 of 100 (Notable)
San Miguel Ejutla	Mexico	Record high minimum temperature	20.6 C (69.1 F)	47 of 100 (Notable)
Brindisi	Italy	Record daily precipitation	65.8 mm (2.6 in)	46 of 100 (Notable)
Ostra_Amtervik	Sweden	Record daily precipitation	28.2 mm (1.1 in)	45 of 100 (Notable)
Berg	Sweden	Record daily precipitation	42.4 mm (1.7 in)	44 of 100 (Notable)
Rorvik_D	Sweden	Record daily precipitation	28.3 mm (1.1 in)	44 of 100 (Notable)
Falkoping	Sweden	Record daily precipitation	34.0 mm (1.3 in)	44 of 100 (Notable)
Cawker City	United States	Record daily precipitation	29.7 mm (1.2 in)	44 of 100 (Notable)
Morrilton	United States	Record daily precipitation	77.5 mm (3.1 in)	42 of 100 (Notable)
Chapman	United States	Record daily precipitation	42.7 mm (1.7 in)	42 of 100 (Notable)
Oxford	United Kingdom	Record high minimum temperature	13.8 C (56.8 F)	41 of 100 (Notable)
Sheffield	United Kingdom	Record high minimum temperature	13.9 C (57.0 F)	41 of 100 (Notable)
Buxton	United Kingdom	Record high minimum temperature	13.5 C (56.3 F)	41 of 100 (Notable)
Booneville 3 SSE	United States	Record daily precipitation	70.6 mm (2.8 in)	41 of 100 (Notable)
Lindsborg 3E	United States	Record daily precipitation	27.9 mm (1.1 in)	41 of 100 (Notable)
Orleans 2 W	United States	Record daily precipitation	38.6 mm (1.5 in)	41 of 100 (Notable)
Dublin Phoenix Park	Ireland	Record high minimum temperature	12.4 C (54.3 F)	40 of 100 (Notable)
Soraby	Sweden	Record daily precipitation	39.7 mm (1.6 in)	40 of 100 (Notable)
Forse	Sweden	Record high minimum temperature	11.5 C (52.7 F)	40 of 100 (Notable)
Armagh	United Kingdom	Record high maximum temperature	23.0 C (73.4 F)	40 of 100 (Notable)
Densmore 2N	United States	Record daily precipitation	37.8 mm (1.5 in)	40 of 100 (Notable)
Neosho	United States	Record daily precipitation	43.9 mm (1.7 in)	40 of 100 (Notable)
Nellore	India	Record daily precipitation	66.0 mm (2.6 in)	39 of 100 (Notable)
Malung	Sweden	Record high minimum temperature	12.3 C (54.1 F)	39 of 100 (Notable)
Armagh	United Kingdom	Record high minimum temperature	13.8 C (56.8 F)	39 of 100 (Notable)
Steamboat Springs	United States	Record low maximum temperature	6.1 C (43.0 F)	39 of 100 (Notable)
Lincoln 1 SE	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Harlan Co Lake	United States	Record daily precipitation	42.7 mm (1.7 in)	39 of 100 (Notable)
Freedom	United States	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Abilene	United States	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Paisley	United Kingdom	Record high minimum temperature	12.5 C (54.5 F)	37 of 100 (Notable)
Black Rock	United States	Record daily precipitation	53.1 mm (2.1 in)	37 of 100 (Notable)
Burr Oak 4S	United States	Record daily precipitation	39.1 mm (1.5 in)	37 of 100 (Notable)
Ionia	United States	Record daily precipitation	33.3 mm (1.3 in)	37 of 100 (Notable)
Smith Ctr	United States	Record daily precipitation	30.2 mm (1.2 in)	37 of 100 (Notable)
Machias	United States	Record daily precipitation	37.8 mm (1.5 in)	37 of 100 (Notable)
Sedalia Wtp	United States	Record daily precipitation	41.9 mm (1.6 in)	37 of 100 (Notable)
Claremore 2 ENE	United States	Record daily precipitation	72.6 mm (2.9 in)	37 of 100 (Notable)
Hennessey 4 ESE	United States	Record daily precipitation	46.2 mm (1.8 in)	37 of 100 (Notable)
Annex Creek	United States	Record high maximum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Kuressaare	Estonia	Record high minimum temperature	16.0 C (60.8 F)	36 of 100 (Notable)
Santa Rosa	Mexico	Record high maximum temperature	38.9 C (102.0 F)	36 of 100 (Notable)
Wilson Lake	United States	Record daily precipitation	36.1 mm (1.4 in)	36 of 100 (Notable)
Red Cloud	United States	Record daily precipitation	40.1 mm (1.6 in)	36 of 100 (Notable)
Nuuanu Rsch 5 775	United States	Record daily precipitation	29.5 mm (1.2 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,011 records

Records set or tied on 20 May 2010 by type: Highest daily maximum 249, Lowest daily maximum 170, Highest daily minimum 261, Lowest daily minimum 62, Heaviest daily rainfall 266, Heaviest daily snowfall 3.

Records on 20 May 2010 by type
Record type	Records
Highest daily maximum	249
Lowest daily maximum	170
Highest daily minimum	261
Lowest daily minimum	62
Heaviest daily rainfall	266
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 20 May 2010 by timescale: all-time 4, monthly 29, daily 978.

How Much Records Were Beaten By

828 broken records

Margins by which the 828 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

20 May 2010

Top 20 records on 20 May 2010 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 2010	Orebro, SE	daily rain	40.1 mm (1.6 in)	23.3 mm (0.9 in)	103 years	80 of 100 (Exceptional)
20 May 2010	Great Bend 3WNW, US	daily rain	73.7 mm (2.9 in)	51.9 mm (2.0 in)	72 years	69 of 100 (Major)
20 May 2010	Cascadia, US	daily rain	50.8 mm (2.0 in)	22.9 mm (0.9 in)	84 years	65 of 100 (Major)
20 May 2010	Heden, SE	monthly rain	59.8 mm (2.4 in)	24.8 mm (1.0 in)	21 years	62 of 100 (Major)
20 May 2010	Nyhammar, SE	monthly rain	48.6 mm (1.9 in)	18.0 mm (0.7 in)	13 years	58 of 100 (Notable)
20 May 2010	Flahult, SE	daily rain	27.0 mm (1.1 in)	7.6 mm (0.30 in)	103 years	55 of 100 (Notable)
20 May 2010	Sater_D, SE	daily rain	34.1 mm (1.3 in)	21.8 mm (0.9 in)	37 years	55 of 100 (Notable)
20 May 2010	Korsberga, SE	daily rain	31.7 mm (1.2 in)	25.4 mm (1.0 in)	29 years	54 of 100 (Notable)
20 May 2010	Pacific, US	daily rain	50.8 mm (2.0 in)	27.4 mm (1.1 in)	89 years	53 of 100 (Notable)
20 May 2010	Claflin, US	daily rain	75.4 mm (3.0 in)	58.1 mm (2.3 in)	21 years	52 of 100 (Notable)
20 May 2010	Guthrie 5S, US	daily rain	103.1 mm (4.1 in)	47.7 mm (1.9 in)	55 years	51 of 100 (Notable)
20 May 2010	Lawrence, US	daily rain	40.9 mm (1.6 in)	14.2 mm (0.6 in)	136 years	50 of 100 (Notable)
20 May 2010	Kakinada, IN	daily rain	105.9 mm (4.2 in)	20.6 mm (0.8 in)	107 years	49 of 100 (Notable)
20 May 2010	Kindsjon_D, SE	daily rain	31.2 mm (1.2 in)	15.7 mm (0.6 in)	47 years	48 of 100 (Notable)
20 May 2010	Calico Rock 2 WSW, US	daily rain	55.9 mm (2.2 in)	15.8 mm (0.6 in)	95 years	48 of 100 (Notable)
20 May 2010	Cassville 1 NE, US	daily rain	43.7 mm (1.7 in)	17.5 mm (0.7 in)	92 years	48 of 100 (Notable)
20 May 2010	San Miguel Ejutla, MX	daily high min	20.6 C (69.1 F)	2.8 C (5.0 F)	81 years	47 of 100 (Notable)
20 May 2010	Brindisi, IT	monthly rain	65.8 mm (2.6 in)	12.6 mm (0.5 in)	41 years	46 of 100 (Notable)
20 May 2010	Ostra_Amtervik, SE	daily rain	28.2 mm (1.1 in)	19.0 mm (0.7 in)	29 years	45 of 100 (Notable)
20 May 2010	Berg, SE	monthly rain	42.4 mm (1.7 in)	12.4 mm (0.5 in)	13 years	44 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

1802 to 2010

Records set or tied on this calendar date in each year from 1802 to 2010. 2010 had 1,011 records.

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

Records on 05-20 in each year
Year	Records
1802	1
1803	1
1804	1
1815	1
1825	1
1837	1
1844	1
1845	3
1847	1
1854	1
1858	3
1861	1
1862	1
1865	1
1867	1
1868	2
1870	3
1871	2
1876	2
1877	3
1879	1
1880	2
1884	2
1885	1
1887	2
1889	3
1890	3
1891	5
1892	3
1893	1
1894	6
1895	3
1896	3
1897	3
1898	4
1899	4
1900	1
1901	5
1902	11
1903	19
1904	4
1905	4
1906	22
1907	35
1908	23
1909	10
1910	20
1911	82
1912	20
1913	10
1914	16
1915	42
1916	29
1917	46
1918	92
1919	56
1920	44
1921	234
1922	40
1923	125
1924	189
1925	251
1926	128
1927	118
1928	138
1929	323
1930	129
1931	451
1932	689
1933	449
1934	582
1935	259
1936	207
1937	270
1938	331
1939	266
1940	337
1941	378
1942	337
1943	802
1944	315
1945	498
1946	339
1947	358
1948	514
1949	586
1950	327
1951	288
1952	615
1953	518
1954	822
1955	421
1956	565
1957	728
1958	378
1959	785
1960	612
1961	333
1962	773
1963	732
1964	517
1965	200
1966	416
1967	587
1968	743
1969	885
1970	310
1971	653
1972	612
1973	419
1974	893
1975	1,332
1976	837
1977	553
1978	534
1979	683
1980	751
1981	1,540
1982	554
1983	1,307
1984	867
1985	426
1986	790
1987	1,036
1988	805
1989	764
1990	722
1991	925
1992	1,200
1993	1,208
1994	778
1995	734
1996	1,749
1997	1,106
1998	1,124
1999	673
2000	991
2001	847
2002	2,299
2003	1,201
2004	746
2005	929
2006	1,006
2007	565
2008	999
2009	1,529
2010	1,011
2011	1,117
2012	604
2013	919
2014	629
2015	1,001
2016	692
2017	1,214
2018	460
2019	1,483
2020	784
2021	904
2022	1,643
2023	1,106
2024	478
2025	969
2026	696

Download the Data

Data for records on 2010-05-20: 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 10	725
10 to 20	69
20 to 30	28
30 to 40	1
40 to 50	1
50 to 60	3
60 to 70	0
70 to 80	1