Weather Records on 20 May 2011

1,117 weather records were set or tied worldwide on 20 May 2011. Highest significance: Enid, US.

Key Facts for 20 May 2011

On 20 May 2011, 1,117 weather records were set or tied at long-record stations worldwide.
408 were record highs and 337 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 23 monthly and 1,088 daily.
Enid set a daily record precipitation of 113.8 mm (4.5 in) on 20 May 2011.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 452 records.

Record Map

1,117 stations

1,117 station records on 20 May 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Enid	United States	Record daily precipitation	113.8 mm (4.5 in)	74 of 100 (Major)
Bruning	United States	Record daily precipitation	93.5 mm (3.7 in)	70 of 100 (Major)
David City 4E	United States	Record daily precipitation	76.2 mm (3.0 in)	68 of 100 (Major)
Loretta 1W	United States	Record daily precipitation	85.1 mm (3.4 in)	66 of 100 (Major)
Friend 3E	United States	Record daily precipitation	76.2 mm (3.0 in)	66 of 100 (Major)
Crete 4ESE	United States	Record daily precipitation	80.3 mm (3.2 in)	64 of 100 (Major)
Clay Ctr 6 ESE	United States	Record daily precipitation	66.0 mm (2.6 in)	63 of 100 (Major)
Golden Valley 9S	United States	Record daily precipitation	67.6 mm (2.7 in)	62 of 100 (Major)
Blanchard 2 SSW	United States	Record daily precipitation	152.4 mm (6.0 in)	61 of 100 (Major)
Grand Lake 1 NW	United States	Record daily snowfall	10.2 cm (4.0 in)	60 of 100 (Major)
Wilson Lake	United States	Record daily precipitation	123.4 mm (4.9 in)	59 of 100 (Notable)
Bradshaw	United States	Record daily precipitation	64.0 mm (2.5 in)	58 of 100 (Notable)
Rapelje	United States	Record daily precipitation	47.0 mm (1.9 in)	57 of 100 (Notable)
Texarkana Webb Fld	United States	Record daily precipitation	60.5 mm (2.4 in)	57 of 100 (Notable)
Broadus	United States	Record daily precipitation	44.4 mm (1.7 in)	56 of 100 (Notable)
Mizpah 4 NNW	United States	Record daily precipitation	57.7 mm (2.3 in)	55 of 100 (Notable)
Seward	United States	Record daily precipitation	50.8 mm (2.0 in)	54 of 100 (Notable)
Kalingapatam	India	Record daily precipitation	82.0 mm (3.2 in)	53 of 100 (Notable)
Nye #2	United States	Record daily precipitation	48.8 mm (1.9 in)	53 of 100 (Notable)
Schuyler	United States	Record daily precipitation	62.7 mm (2.5 in)	53 of 100 (Notable)
Hermosa 3 SSW	United States	Record daily precipitation	64.5 mm (2.5 in)	52 of 100 (Notable)
Powderville 8 NNE	United States	Record daily precipitation	54.1 mm (2.1 in)	51 of 100 (Notable)
Superior	United States	Record daily precipitation	59.9 mm (2.4 in)	51 of 100 (Notable)
Vernon	United States	Record daily precipitation	83.1 mm (3.3 in)	51 of 100 (Notable)
Douglas 1 SE	United States	Record daily snowfall	7.6 cm (3.0 in)	51 of 100 (Notable)
Parker Peak	United States	Record daily precipitation	45.7 mm (1.8 in)	51 of 100 (Notable)
Brownsville	United States	Record high maximum temperature	37.8 C (100.0 F)	51 of 100 (Notable)
Amelup	Australia	Record daily precipitation	26.0 mm (1.0 in)	50 of 100 (Notable)
Lincoln 1 SE	United States	Record daily precipitation	115.6 mm (4.6 in)	50 of 100 (Notable)
Smith Ctr	United States	Record daily precipitation	84.6 mm (3.3 in)	50 of 100 (Notable)
Hebron	United States	Record daily precipitation	82.8 mm (3.3 in)	50 of 100 (Notable)
W Pt	United States	Record daily precipitation	42.2 mm (1.7 in)	50 of 100 (Notable)
Douglas 1 SE	United States	Record daily precipitation	29.2 mm (1.1 in)	50 of 100 (Notable)
Lincoln UNIV Pwr Plt	United States	Record daily precipitation	76.5 mm (3.0 in)	50 of 100 (Notable)
Malcolm	United States	Record daily precipitation	63.5 mm (2.5 in)	49 of 100 (Notable)
Union City 3 SE	United States	Record daily precipitation	119.4 mm (4.7 in)	49 of 100 (Notable)
Riverton	United States	Record daily precipitation	40.6 mm (1.6 in)	49 of 100 (Notable)
Box Canyon	United States	Record daily precipitation	30.5 mm (1.2 in)	49 of 100 (Notable)
Balasore	India	Record daily precipitation	45.0 mm (1.8 in)	48 of 100 (Notable)
Bison 3NW	United States	Record daily precipitation	88.4 mm (3.5 in)	48 of 100 (Notable)
Washington	United States	Record daily precipitation	65.3 mm (2.6 in)	48 of 100 (Notable)
Fairmont	United States	Record daily precipitation	51.8 mm (2.0 in)	48 of 100 (Notable)
Raymond 2E	United States	Record daily precipitation	66.5 mm (2.6 in)	48 of 100 (Notable)
Yellanup	Australia	Record daily precipitation	52.8 mm (2.1 in)	47 of 100 (Notable)
Oujda	Morocco	Record daily precipitation	31.0 mm (1.2 in)	47 of 100 (Notable)
Climax	United States	Record daily snowfall	27.9 cm (11.0 in)	47 of 100 (Notable)
Big Timber	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Paxton	United States	Record daily precipitation	37.3 mm (1.5 in)	47 of 100 (Notable)
Utica	United States	Record daily precipitation	50.5 mm (2.0 in)	47 of 100 (Notable)
Corning	United States	Record daily precipitation	50.3 mm (2.0 in)	47 of 100 (Notable)
Jefferson 3SE	United States	Record daily precipitation	59.9 mm (2.4 in)	47 of 100 (Notable)
Campina Grande	Brazil	Record daily precipitation	46.0 mm (1.8 in)	46 of 100 (Notable)
Kinlochewe	United Kingdom	Record daily precipitation	46.8 mm (1.8 in)	46 of 100 (Notable)
Lick Creek	United States	Record daily precipitation	45.7 mm (1.8 in)	46 of 100 (Notable)
Geneva	United States	Record daily precipitation	56.9 mm (2.2 in)	45 of 100 (Notable)
Walthill 1E	United States	Record daily precipitation	36.8 mm (1.4 in)	45 of 100 (Notable)
Grand Is Cntrl NE Rgnl AP	United States	Record daily precipitation	62.5 mm (2.5 in)	45 of 100 (Notable)
Georgetown	United States	Record low maximum temperature	2.8 C (37.0 F)	44 of 100 (Notable)
Knobs 4 SW	United States	Record daily precipitation	50.5 mm (2.0 in)	44 of 100 (Notable)
Red Lodge	United States	Record daily precipitation	77.2 mm (3.0 in)	44 of 100 (Notable)

Counts by Type and Timescale

1,117 records

Records set or tied on 20 May 2011 by type: Highest daily maximum 232, Lowest daily maximum 188, Highest daily minimum 176, Lowest daily minimum 149, Heaviest daily rainfall 352, Heaviest daily snowfall 12, Deepest snow cover 8.

Records on 20 May 2011 by type
Record type	Records
Highest daily maximum	232
Lowest daily maximum	188
Highest daily minimum	176
Lowest daily minimum	149
Heaviest daily rainfall	352
Heaviest daily snowfall	12
Deepest snow cover	8

Records on 20 May 2011 by timescale: all-time 6, monthly 23, daily 1,088.

How Much Records Were Beaten By

856 broken records

Margins by which the 856 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 229.0. Ties are not counted.

Top 20 by Significance

20 May 2011

Top 20 records on 20 May 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 2011	Enid, US	daily rain	113.8 mm (4.5 in)	77.5 mm (3.1 in)	81 years	74 of 100 (Major)
20 May 2011	Bruning, US	daily rain	93.5 mm (3.7 in)	50.8 mm (2.0 in)	76 years	70 of 100 (Major)
20 May 2011	David City 4E, US	daily rain	76.2 mm (3.0 in)	38.1 mm (1.5 in)	112 years	68 of 100 (Major)
20 May 2011	Loretta 1W, US	daily rain	85.1 mm (3.4 in)	62.2 mm (2.4 in)	65 years	66 of 100 (Major)
20 May 2011	Friend 3E, US	daily rain	76.2 mm (3.0 in)	47.0 mm (1.9 in)	73 years	66 of 100 (Major)
20 May 2011	Crete 4ESE, US	daily rain	80.3 mm (3.2 in)	42.5 mm (1.7 in)	76 years	64 of 100 (Major)
20 May 2011	Clay Ctr 6 ESE, US	daily rain	66.0 mm (2.6 in)	40.9 mm (1.6 in)	72 years	63 of 100 (Major)
20 May 2011	Golden Valley 9S, US	daily rain	67.6 mm (2.7 in)	44.2 mm (1.7 in)	53 years	62 of 100 (Major)
20 May 2011	Blanchard 2 SSW, US	daily rain	152.4 mm (6.0 in)	94.7 mm (3.7 in)	50 years	61 of 100 (Major)
20 May 2011	Grand Lake 1 NW, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	101 years	60 of 100 (Major)
20 May 2011	Wilson Lake, US	monthly rain	123.4 mm (4.9 in)	58.4 mm (2.3 in)	19 years	59 of 100 (Notable)
20 May 2011	Bradshaw, US	daily rain	64.0 mm (2.5 in)	33.0 mm (1.3 in)	76 years	58 of 100 (Notable)
20 May 2011	Rapelje, US	daily rain	47.0 mm (1.9 in)	16.3 mm (0.6 in)	102 years	57 of 100 (Notable)
20 May 2011	Texarkana Webb Fld, US	daily rain	60.5 mm (2.4 in)	31.5 mm (1.2 in)	109 years	57 of 100 (Notable)
20 May 2011	Broadus, US	daily rain	44.4 mm (1.7 in)	19.5 mm (0.8 in)	72 years	56 of 100 (Notable)
20 May 2011	Mizpah 4 NNW, US	daily rain	57.7 mm (2.3 in)	32.3 mm (1.3 in)	38 years	55 of 100 (Notable)
20 May 2011	Seward, US	daily rain	50.8 mm (2.0 in)	19.0 mm (0.7 in)	97 years	54 of 100 (Notable)
20 May 2011	Kalingapatam, IN	daily rain	82.0 mm (3.2 in)	74.2 mm (2.9 in)	41 years	53 of 100 (Notable)
20 May 2011	Nye #2, US	daily rain	48.8 mm (1.9 in)	15.0 mm (0.6 in)	102 years	53 of 100 (Notable)
20 May 2011	Schuyler, US	daily rain	62.7 mm (2.5 in)	30.4 mm (1.2 in)	61 years	53 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 2011

Records set or tied on this calendar date in each year from 1802 to 2011. 2011 had 1,117 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 2011-05-20: 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 2026-10-16 (16 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 50	834
50 to 100	16
100 to 150	4
150 to 200	1
200 to 250	1