Weather Records on 20 May 2021

904 weather records were set or tied worldwide on 20 May 2021. Highest significance: Varanasi, IN.

Key Facts for 20 May 2021

On 20 May 2021, 904 weather records were set or tied at long-record stations worldwide.
284 were record highs and 401 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 31 monthly and 873 daily.
Varanasi set a monthly record daily precipitation of 70.1 mm (2.8 in) on 20 May 2021.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 453 records.

Record Map

904 stations

904 station records on 20 May 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Varanasi	India	Record daily precipitation	70.1 mm (2.8 in)	71 of 100 (Major)
New Delhi/Safdarjun	India	Record daily precipitation	119.1 mm (4.7 in)	68 of 100 (Major)
Mukteshwar Kumaon	India	Record daily precipitation	85.1 mm (3.4 in)	64 of 100 (Major)
Choteau	United States	Record daily snowfall	14.0 cm (5.5 in)	64 of 100 (Major)
Gorakhpur	India	Record daily precipitation	81.0 mm (3.2 in)	63 of 100 (Major)
Malham Tarn	United Kingdom	Record daily precipitation	50.6 mm (2.0 in)	63 of 100 (Major)
Alwen	United Kingdom	Record daily precipitation	36.8 mm (1.4 in)	60 of 100 (Major)
Ushibuka	Japan	Record daily precipitation	161.0 mm (6.3 in)	59 of 100 (Notable)
Choteau	United States	Record snow depth	15.2 cm (6.0 in)	59 of 100 (Notable)
Kumamoto	Japan	Record daily precipitation	127.0 mm (5.0 in)	57 of 100 (Notable)
Holter Dam	United States	Record daily snowfall	8.9 cm (3.5 in)	57 of 100 (Notable)
Fairfield	United States	Record daily snowfall	10.2 cm (4.0 in)	56 of 100 (Notable)
Matuku	Fiji	Record daily precipitation	115.3 mm (4.5 in)	55 of 100 (Notable)
Hita	Japan	Record daily precipitation	112.0 mm (4.4 in)	55 of 100 (Notable)
Pt Comfort	United States	Record daily precipitation	177.0 mm (7.0 in)	52 of 100 (Notable)
Heinola Asemantaus	Finland	Record daily precipitation	28.3 mm (1.1 in)	51 of 100 (Notable)
Ajmer	India	Record daily precipitation	39.1 mm (1.5 in)	51 of 100 (Notable)
Bynum 4 SSE	United States	Record daily snowfall	10.2 cm (4.0 in)	50 of 100 (Notable)
Conrad	United States	Record daily snowfall	5.1 cm (2.0 in)	50 of 100 (Notable)
Holter Dam	United States	Record snow depth	10.2 cm (4.0 in)	50 of 100 (Notable)
Akune	Japan	Record daily precipitation	200.9 mm (7.9 in)	49 of 100 (Notable)
Hitoyoshi	Japan	Record daily precipitation	181.1 mm (7.1 in)	49 of 100 (Notable)
Matsuyama	Japan	Record daily precipitation	95.0 mm (3.7 in)	49 of 100 (Notable)
Armagh	United Kingdom	Record daily precipitation	30.7 mm (1.2 in)	49 of 100 (Notable)
Choteau	United States	Record low maximum temperature	1.7 C (35.1 F)	49 of 100 (Notable)
Adel	United States	Record low maximum temperature	-1.1 C (30.0 F)	48 of 100 (Notable)
Goldbutte 7 N	United States	Record snow depth	10.2 cm (4.0 in)	48 of 100 (Notable)
Vunisea	Fiji	Record daily precipitation	88.4 mm (3.5 in)	47 of 100 (Notable)
Bareilly	India	Record daily precipitation	50.0 mm (2.0 in)	47 of 100 (Notable)
Krasnaja_Gora	Russia	Record daily precipitation	42.9 mm (1.7 in)	47 of 100 (Notable)
Adler	Russia	Record daily precipitation	99.1 mm (3.9 in)	47 of 100 (Notable)
Iola 1 W	United States	Record daily precipitation	82.8 mm (3.3 in)	47 of 100 (Notable)
Gibson Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	47 of 100 (Notable)
Bay City Wtr Wks	United States	Record low maximum temperature	20.6 C (69.1 F)	47 of 100 (Notable)
Port Mansfield	United States	Record daily precipitation	86.4 mm (3.4 in)	47 of 100 (Notable)
Uwajima	Japan	Record daily precipitation	91.9 mm (3.6 in)	46 of 100 (Notable)
Goldbutte 7 N	United States	Record daily snowfall	9.4 cm (3.7 in)	46 of 100 (Notable)
Simpson 6 N - Wildhorse	United States	Record daily snowfall	5.1 cm (2.0 in)	46 of 100 (Notable)
Chuuk WSO AP	Federated States of Micronesia	Record daily precipitation	145.0 mm (5.7 in)	45 of 100 (Notable)
Kota Kinabalu Intl	Malaysia	Record daily precipitation	132.6 mm (5.2 in)	45 of 100 (Notable)
Kargopol	Russia	Record high minimum temperature	17.8 C (64.0 F)	45 of 100 (Notable)
Joplin	United States	Record daily snowfall	15.2 cm (6.0 in)	45 of 100 (Notable)
Joplin	United States	Record snow depth	12.7 cm (5.0 in)	45 of 100 (Notable)
Napoleon	United States	Record daily precipitation	38.6 mm (1.5 in)	45 of 100 (Notable)
Key West NAS	United States	Record low minimum temperature	15.0 C (59.0 F)	45 of 100 (Notable)
Fordyce	United States	Record daily precipitation	45.0 mm (1.8 in)	44 of 100 (Notable)
Hayward Rs	United States	Record high minimum temperature	18.3 C (64.9 F)	44 of 100 (Notable)
Vanuabalavu	Fiji	Record daily precipitation	86.0 mm (3.4 in)	43 of 100 (Notable)
Dehradun	India	Record daily precipitation	48.0 mm (1.9 in)	43 of 100 (Notable)
Twin Bridges	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)
McAllen	United States	Record daily precipitation	62.5 mm (2.5 in)	43 of 100 (Notable)
Conrad	United States	Record low maximum temperature	4.4 C (39.9 F)	42 of 100 (Notable)
Morgan	United States	Record high minimum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
Park Rapids Muni AP	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Buzau	Romania	Record daily precipitation	28.7 mm (1.1 in)	41 of 100 (Notable)
Allerton	United States	Record high minimum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Green Bay	United States	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Patna	India	Record daily precipitation	39.9 mm (1.6 in)	40 of 100 (Notable)
Oita	Japan	Record daily precipitation	55.1 mm (2.2 in)	40 of 100 (Notable)
Ambodedjo	Mali	Record low maximum temperature	33.2 C (91.8 F)	40 of 100 (Notable)

Counts by Type and Timescale

904 records

Records set or tied on 20 May 2021 by type: Highest daily maximum 96, Lowest daily maximum 235, Highest daily minimum 188, Lowest daily minimum 166, Heaviest daily rainfall 172, Heaviest daily snowfall 27, Deepest snow cover 20.

Records on 20 May 2021 by type
Record type	Records
Highest daily maximum	96
Lowest daily maximum	235
Highest daily minimum	188
Lowest daily minimum	166
Heaviest daily rainfall	172
Heaviest daily snowfall	27
Deepest snow cover	20

Records on 20 May 2021 by timescale: all-time 0, monthly 31, daily 873.

How Much Records Were Beaten By

748 broken records

Margins by which the 748 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 155.9. Ties are not counted.

Top 20 by Significance

20 May 2021

Top 20 records on 20 May 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 2021	Varanasi, IN	monthly rain	70.1 mm (2.8 in)	24.9 mm (1.0 in)	84 years	71 of 100 (Major)
20 May 2021	New Delhi/Safdarjun, IN	monthly rain	119.1 mm (4.7 in)	65.0 mm (2.6 in)	27 years	68 of 100 (Major)
20 May 2021	Mukteshwar Kumaon, IN	monthly rain	85.1 mm (3.4 in)	13.7 mm (0.5 in)	105 years	64 of 100 (Major)
20 May 2021	Choteau, US	daily snowfall	14.0 cm (5.5 in)	14.0 cm (5.5 in)	127 years	64 of 100 (Major)
20 May 2021	Gorakhpur, IN	daily rain	81.0 mm (3.2 in)	40.1 mm (1.6 in)	84 years	63 of 100 (Major)
20 May 2021	Malham Tarn, GB	daily rain	50.6 mm (2.0 in)	32.6 mm (1.3 in)	59 years	63 of 100 (Major)
20 May 2021	Alwen, GB	daily rain	36.8 mm (1.4 in)	24.2 mm (1.0 in)	48 years	60 of 100 (Major)
20 May 2021	Ushibuka, JP	daily rain	161.0 mm (6.3 in)	105.0 mm (4.1 in)	40 years	59 of 100 (Notable)
20 May 2021	Choteau, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	116 years	59 of 100 (Notable)
20 May 2021	Kumamoto, JP	daily rain	127.0 mm (5.0 in)	91.5 mm (3.6 in)	36 years	57 of 100 (Notable)
20 May 2021	Holter Dam, US	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	118 years	57 of 100 (Notable)
20 May 2021	Fairfield, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	92 years	56 of 100 (Notable)
20 May 2021	Matuku, FJ	daily rain	115.3 mm (4.5 in)	96.1 mm (3.8 in)	39 years	55 of 100 (Notable)
20 May 2021	Hita, JP	daily rain	112.0 mm (4.4 in)	59.0 mm (2.3 in)	67 years	55 of 100 (Notable)
20 May 2021	Pt Comfort, US	daily rain	177.0 mm (7.0 in)	98.8 mm (3.9 in)	20 years	52 of 100 (Notable)
20 May 2021	Heinola Asemantaus, FI	daily rain	28.3 mm (1.1 in)	16.3 mm (0.6 in)	27 years	51 of 100 (Notable)
20 May 2021	Ajmer, IN	daily rain	39.1 mm (1.5 in)	11.7 mm (0.5 in)	95 years	51 of 100 (Notable)
20 May 2021	Bynum 4 SSE, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	70 years	50 of 100 (Notable)
20 May 2021	Conrad, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	110 years	50 of 100 (Notable)
20 May 2021	Holter Dam, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	118 years	50 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 2021

Records set or tied on this calendar date in each year from 1802 to 2021. 2021 had 904 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 2021-05-20: 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 20	671
20 to 40	30
40 to 60	20
60 to 80	11
80 to 100	6
100 to 120	6
120 to 140	1
140 to 160	3