Weather Records on 21 May 1971

536 weather records were set or tied worldwide on 21 May 1971. Highest significance: Nurnberg, DE.

Key Facts for 21 May 1971

On 21 May 1971, 536 weather records were set or tied at long-record stations worldwide.
69 were record highs and 170 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 22 monthly and 513 daily.
Nurnberg set a daily record precipitation of 60.1 mm (2.4 in) on 21 May 1971.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 460 records.

Record Map

536 stations

536 station records on 21 May 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nurnberg	Germany	Record daily precipitation	60.1 mm (2.4 in)	66 of 100 (Major)
Pommelsbrunn	Germany	Record daily precipitation	42.3 mm (1.7 in)	64 of 100 (Major)
Lake Placid 2 S	United States	Record daily precipitation	63.0 mm (2.5 in)	61 of 100 (Major)
Selb/Oberfranken-Lauterbach	Germany	Record daily precipitation	59.5 mm (2.3 in)	60 of 100 (Major)
Georgetown 2 E	United States	Record daily precipitation	94.7 mm (3.7 in)	60 of 100 (Major)
Krasnojarsk	Russia	Record daily precipitation	30.7 mm (1.2 in)	59 of 100 (Notable)
Usugli	Russia	Record daily precipitation	35.9 mm (1.4 in)	59 of 100 (Notable)
Elko Rgnl AP	United States	Record daily snowfall	19.8 cm (7.8 in)	58 of 100 (Notable)
Schlusselfeld (Klaranlage)	Germany	Record daily precipitation	50.4 mm (2.0 in)	57 of 100 (Notable)
South Solitary Island	Australia	Record daily precipitation	71.4 mm (2.8 in)	55 of 100 (Notable)
Tungokocen	Russia	Record daily precipitation	36.3 mm (1.4 in)	54 of 100 (Notable)
Boca	United States	Record daily snowfall	15.2 cm (6.0 in)	53 of 100 (Notable)
Praha-Klementinum	Czech Republic	Record daily precipitation	45.6 mm (1.8 in)	51 of 100 (Notable)
Mohrendorf-Kleinseebach	Germany	Record daily precipitation	45.8 mm (1.8 in)	51 of 100 (Notable)
Chasm Falls	United States	Record daily precipitation	42.2 mm (1.7 in)	50 of 100 (Notable)
Elko Rgnl AP	United States	Record daily precipitation	43.9 mm (1.7 in)	48 of 100 (Notable)
Schluchtern-Herolz	Germany	Record daily precipitation	36.8 mm (1.4 in)	46 of 100 (Notable)
Tugulym	Russia	Record daily precipitation	28.0 mm (1.1 in)	45 of 100 (Notable)
Woodfords	United States	Record daily snowfall	20.3 cm (8.0 in)	45 of 100 (Notable)
Wynnum Railway Station	Australia	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Eureka	United States	Record daily snowfall	17.8 cm (7.0 in)	44 of 100 (Notable)
Cockburn (Tepco)	Australia	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Wardensville R M Farm	United States	Record daily precipitation	48.3 mm (1.9 in)	41 of 100 (Notable)
St Tite	Canada	Record daily precipitation	40.9 mm (1.6 in)	40 of 100 (Notable)
Gelnhausen	Germany	Record daily precipitation	30.0 mm (1.2 in)	40 of 100 (Notable)
Hof (Stadt)	Germany	Record daily precipitation	34.1 mm (1.3 in)	40 of 100 (Notable)
Lauda-Konigshofen-Gerlachsheim	Germany	Record daily precipitation	55.2 mm (2.2 in)	40 of 100 (Notable)
Doyle	United States	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Big Meadows	United States	Record daily precipitation	62.0 mm (2.4 in)	40 of 100 (Notable)
Hopetoun	Australia	Record daily precipitation	38.1 mm (1.5 in)	39 of 100 (Notable)
Beau Maison	Australia	Record daily precipitation	28.7 mm (1.1 in)	39 of 100 (Notable)
Nurnberg-Buchenbuehl	Germany	Record daily precipitation	67.5 mm (2.7 in)	39 of 100 (Notable)
Macalister Post Office	Australia	Record daily precipitation	27.7 mm (1.1 in)	36 of 100 (Notable)
St Andrews	Canada	Record high minimum temperature	8.9 C (48.0 F)	36 of 100 (Notable)
Seligman	United States	Record low minimum temperature	-8.3 C (17.1 F)	36 of 100 (Notable)
Austin #2	United States	Record snow depth	20.3 cm (8.0 in)	36 of 100 (Notable)
Nixon	United States	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Austin #2	United States	Record daily precipitation	36.1 mm (1.4 in)	35 of 100 (Notable)
Dartnall	Australia	Record daily precipitation	26.7 mm (1.1 in)	34 of 100 (Routine)
Fladungen-Heufurt	Germany	Record daily precipitation	28.2 mm (1.1 in)	34 of 100 (Routine)
Dumbleyung	Australia	Record daily precipitation	26.9 mm (1.1 in)	33 of 100 (Routine)
Mingary	Australia	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Ninette	Canada	Record daily precipitation	37.6 mm (1.5 in)	33 of 100 (Routine)
Ebrach	Germany	Record daily precipitation	47.9 mm (1.9 in)	33 of 100 (Routine)
Pemfling-Pitzling	Germany	Record daily precipitation	29.1 mm (1.1 in)	33 of 100 (Routine)
Portola	United States	Record daily snowfall	16.5 cm (6.5 in)	33 of 100 (Routine)
Nairibin	Australia	Record daily precipitation	25.9 mm (1.0 in)	32 of 100 (Routine)
Warra Post Office	Australia	Record daily precipitation	37.8 mm (1.5 in)	32 of 100 (Routine)
Itabatinga	Brazil	Record daily precipitation	45.0 mm (1.8 in)	32 of 100 (Routine)
Hollister 1 SW	United States	Record low minimum temperature	0.6 C (33.1 F)	31 of 100 (Routine)
Fallon Exp STN	United States	Record low maximum temperature	8.3 C (46.9 F)	31 of 100 (Routine)
Harwood Island (Harwood Sugar	Australia	Record daily precipitation	69.1 mm (2.7 in)	30 of 100 (Routine)
Paonia 1SW	United States	Record low minimum temperature	-2.8 C (27.0 F)	30 of 100 (Routine)
Winnemucca AP	United States	Record low maximum temperature	6.7 C (44.1 F)	30 of 100 (Routine)
Oakley	United States	Record low maximum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
Brooklyn 2 SE	United States	Record daily precipitation	62.2 mm (2.4 in)	29 of 100 (Routine)
Helidon Post Office	Australia	Record daily precipitation	39.4 mm (1.6 in)	28 of 100 (Routine)
Port Aux Basques	Canada	Record high minimum temperature	7.2 C (45.0 F)	28 of 100 (Routine)
Roth Bei Nurnberg	Germany	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Tupper Lake Sunmount	United States	Record daily precipitation	65.8 mm (2.6 in)	28 of 100 (Routine)

Counts by Type and Timescale

536 records

Records set or tied on 21 May 1971 by type: Highest daily maximum 17, Lowest daily maximum 65, Highest daily minimum 52, Lowest daily minimum 105, Heaviest daily rainfall 267, Heaviest daily snowfall 22, Deepest snow cover 8.

Records on 21 May 1971 by type
Record type	Records
Highest daily maximum	17
Lowest daily maximum	65
Highest daily minimum	52
Lowest daily minimum	105
Heaviest daily rainfall	267
Heaviest daily snowfall	22
Deepest snow cover	8

Records on 21 May 1971 by timescale: all-time 1, monthly 22, daily 513.

How Much Records Were Beaten By

449 broken records

Margins by which the 449 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 305.0. Ties are not counted.

Top 20 by Significance

21 May 1971

Top 20 records on 21 May 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1971	Nurnberg, DE	daily rain	60.1 mm (2.4 in)	44.6 mm (1.8 in)	58 years	66 of 100 (Major)
21 May 1971	Pommelsbrunn, DE	daily rain	42.3 mm (1.7 in)	27.3 mm (1.1 in)	58 years	64 of 100 (Major)
21 May 1971	Lake Placid 2 S, US	monthly rain	63.0 mm (2.5 in)	16.8 mm (0.7 in)	61 years	61 of 100 (Major)
21 May 1971	Selb/Oberfranken-Lauterbach, DE	monthly rain	59.5 mm (2.3 in)	21.4 mm (0.8 in)	30 years	60 of 100 (Major)
21 May 1971	Georgetown 2 E, US	daily rain	94.7 mm (3.7 in)	56.6 mm (2.2 in)	58 years	60 of 100 (Major)
21 May 1971	Krasnojarsk, RU	daily rain	30.7 mm (1.2 in)	23.2 mm (0.9 in)	48 years	59 of 100 (Notable)
21 May 1971	Usugli, RU	monthly rain	35.9 mm (1.4 in)	16.4 mm (0.6 in)	22 years	59 of 100 (Notable)
21 May 1971	Elko Rgnl AP, US	monthly snowfall	19.8 cm (7.8 in)	11.4 cm (4.5 in)	0 years	58 of 100 (Notable)
21 May 1971	Schlusselfeld (Klaranlage), DE	monthly rain	50.4 mm (2.0 in)	18.0 mm (0.7 in)	30 years	57 of 100 (Notable)
21 May 1971	South Solitary Island, AU	daily rain	71.4 mm (2.8 in)	58.7 mm (2.3 in)	65 years	55 of 100 (Notable)
21 May 1971	Tungokocen, RU	monthly rain	36.3 mm (1.4 in)	16.9 mm (0.7 in)	4 years	54 of 100 (Notable)
21 May 1971	Boca, US	daily snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	53 years	53 of 100 (Notable)
21 May 1971	Praha-Klementinum, CZ	daily rain	45.6 mm (1.8 in)	7.3 mm (0.29 in)	150 years	51 of 100 (Notable)
21 May 1971	Mohrendorf-Kleinseebach, DE	daily rain	45.8 mm (1.8 in)	32.6 mm (1.3 in)	25 years	51 of 100 (Notable)
21 May 1971	Chasm Falls, US	daily rain	42.2 mm (1.7 in)	26.5 mm (1.0 in)	28 years	50 of 100 (Notable)
21 May 1971	Elko Rgnl AP, US	monthly rain	43.9 mm (1.7 in)	5.8 mm (0.23 in)	66 years	48 of 100 (Notable)
21 May 1971	Schluchtern-Herolz, DE	daily rain	36.8 mm (1.4 in)	26.1 mm (1.0 in)	8 years	46 of 100 (Notable)
21 May 1971	Tugulym, RU	daily rain	28.0 mm (1.1 in)	22.1 mm (0.9 in)	8 years	45 of 100 (Notable)
21 May 1971	Woodfords, US	monthly snowfall	20.3 cm (8.0 in)	5.1 cm (2.0 in)	53 years	45 of 100 (Notable)
21 May 1971	Wynnum Railway Station, AU	daily rain	66.0 mm (2.6 in)	46.2 mm (1.8 in)	48 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

1793 to 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 536 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 1971-05-21: 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 50	437
50 to 100	7
100 to 150	4
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	1