Weather Records on 21 May 1931

488 weather records were set or tied worldwide on 21 May 1931. Highest significance: Lewisburg 3 N, US.

Key Facts for 21 May 1931

On 21 May 1931, 488 weather records were set or tied at long-record stations worldwide.
42 were record highs and 394 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 8 monthly and 480 daily.
Lewisburg 3 N set a daily record precipitation of 50.0 mm (2.0 in) on 21 May 1931.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 460 records.

Record Map

488 stations

488 station records on 21 May 1931 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 1931: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lewisburg 3 N	United States	Record daily precipitation	50.0 mm (2.0 in)	45 of 100 (Notable)
Raleigh State UNIV	United States	Record daily precipitation	66.0 mm (2.6 in)	40 of 100 (Notable)
Ulysses 3NE	United States	Record low maximum temperature	6.1 C (43.0 F)	28 of 100 (Routine)
Jaipur	India	Record daily precipitation	38.1 mm (1.5 in)	26 of 100 (Routine)
Lakin	United States	Record low maximum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Tamluk	India	Record daily precipitation	48.3 mm (1.9 in)	25 of 100 (Routine)
Rocky Ford 2 SE	United States	Record low maximum temperature	4.4 C (39.9 F)	25 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record low maximum temperature	5.6 C (42.1 F)	24 of 100 (Routine)
Beaver City	United States	Record low maximum temperature	10.6 C (51.1 F)	24 of 100 (Routine)
Newkirk 5NE	United States	Record low maximum temperature	13.3 C (55.9 F)	24 of 100 (Routine)
Hoxie	United States	Record low maximum temperature	7.8 C (46.0 F)	23 of 100 (Routine)
Chugwater	United States	Record low minimum temperature	-10.0 C (14.0 F)	23 of 100 (Routine)
Stuttgart-Stadt	Germany	Record daily precipitation	25.3 mm (1.0 in)	22 of 100 (Routine)
Holly	United States	Record daily precipitation	34.3 mm (1.4 in)	22 of 100 (Routine)
Winfield 3NE	United States	Record low maximum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Ovando	United States	Record low minimum temperature	-7.8 C (18.0 F)	22 of 100 (Routine)
Rosebud	United States	Record low minimum temperature	-5.6 C (21.9 F)	22 of 100 (Routine)
Evanston 1 E	United States	Record low minimum temperature	-7.8 C (18.0 F)	22 of 100 (Routine)
San Diego Wbo	United States	Record high minimum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Lake Moraine	United States	Record low maximum temperature	-2.2 C (28.0 F)	21 of 100 (Routine)
Hutchinson River	United States	Record low maximum temperature	8.3 C (46.9 F)	21 of 100 (Routine)
Victoria Gonzales Hts	Canada	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Stromsfoss Sluse	Norway	Record daily precipitation	18.1 mm (0.7 in)	20 of 100 (Routine)
Chicoutimi	Canada	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Halden	Norway	Record daily precipitation	14.4 mm (0.6 in)	20 of 100 (Routine)
Cooperstown	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Banff	Canada	Record daily snowfall	8.9 cm (3.5 in)	20 of 100 (Routine)
Turkestan	Kazakhstan	Record daily precipitation	6.0 mm (0.24 in)	20 of 100 (Routine)
Vaexjoe	Sweden	Record daily precipitation	11.1 mm (0.4 in)	20 of 100 (Routine)
Vanersborg	Sweden	Record daily precipitation	12.0 mm (0.5 in)	20 of 100 (Routine)
Britt 3E	United States	Record low minimum temperature	0.0 C (32.0 F)	20 of 100 (Routine)
Lakin	United States	Record daily precipitation	46.2 mm (1.8 in)	20 of 100 (Routine)
Lawrence	United States	Record low maximum temperature	13.3 C (55.9 F)	20 of 100 (Routine)
Lebo	United States	Record low maximum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Academy 2NE	United States	Record low minimum temperature	-7.8 C (18.0 F)	20 of 100 (Routine)
Tyndall	United States	Record low minimum temperature	-4.4 C (24.1 F)	20 of 100 (Routine)
Crosbyton	United States	Record low minimum temperature	3.9 C (39.0 F)	20 of 100 (Routine)
Elko Rgnl AP	United States	Record low minimum temperature	-6.1 C (21.0 F)	20 of 100 (Routine)
Quesnel	Canada	Record low minimum temperature	-3.9 C (25.0 F)	19 of 100 (Routine)
Schreiber	Canada	Record daily snowfall	2.5 cm (1.0 in)	19 of 100 (Routine)
Carroll	United States	Record low minimum temperature	-1.1 C (30.0 F)	19 of 100 (Routine)
Pratt 3NW	United States	Record low maximum temperature	13.9 C (57.0 F)	19 of 100 (Routine)
Hay Springs	United States	Record low minimum temperature	-5.6 C (21.9 F)	19 of 100 (Routine)
Kimball 2NE	United States	Record low minimum temperature	-3.9 C (25.0 F)	19 of 100 (Routine)
Santee	United States	Record low minimum temperature	-3.3 C (26.1 F)	19 of 100 (Routine)
Flemington 5 NNW	United States	Record daily precipitation	28.4 mm (1.1 in)	19 of 100 (Routine)
Somerville 4 NW	United States	Record high minimum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Oneonta 1 S	United States	Record daily precipitation	27.9 mm (1.1 in)	19 of 100 (Routine)
Salisbury	United States	Record daily precipitation	82.8 mm (3.3 in)	19 of 100 (Routine)
Gann Valley 4NW	United States	Record low minimum temperature	-6.1 C (21.0 F)	19 of 100 (Routine)
Wentworth 2.5 WNW	United States	Record low minimum temperature	-6.1 C (21.0 F)	19 of 100 (Routine)
Lusk 2 SW	United States	Record low minimum temperature	-7.2 C (19.0 F)	19 of 100 (Routine)
Nuwara Eliya	Sri Lanka	Record high maximum temperature	25.1 C (77.2 F)	18 of 100 (Routine)
Durham	United Kingdom	Record low minimum temperature	-2.8 C (27.0 F)	18 of 100 (Routine)
Paso Robles	United States	Record high minimum temperature	12.8 C (55.0 F)	18 of 100 (Routine)
Ashton 1N	United States	Record low minimum temperature	-6.1 C (21.0 F)	18 of 100 (Routine)
Alta	United States	Record low minimum temperature	-2.2 C (28.0 F)	18 of 100 (Routine)
Ames 3 SW	United States	Record low minimum temperature	0.6 C (33.1 F)	18 of 100 (Routine)
Grundy Ctr	United States	Record low minimum temperature	-1.1 C (30.0 F)	18 of 100 (Routine)
Indianola 1SW	United States	Record low minimum temperature	0.0 C (32.0 F)	18 of 100 (Routine)

Counts by Type and Timescale

488 records

Records set or tied on 21 May 1931 by type: Highest daily maximum 12, Lowest daily maximum 169, Highest daily minimum 30, Lowest daily minimum 225, Heaviest daily rainfall 49, Heaviest daily snowfall 3.

Records on 21 May 1931 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	169
Highest daily minimum	30
Lowest daily minimum	225
Heaviest daily rainfall	49
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 21 May 1931 by timescale: all-time 0, monthly 8, daily 480.

How Much Records Were Beaten By

401 broken records

Margins by which the 401 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 61.0. Ties are not counted.

Top 20 by Significance

21 May 1931

Top 20 records on 21 May 1931 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1931	Lewisburg 3 N, US	daily rain	50.0 mm (2.0 in)	27.9 mm (1.1 in)	21 years	45 of 100 (Notable)
21 May 1931	Raleigh State UNIV, US	daily rain	66.0 mm (2.6 in)	30.4 mm (1.2 in)	34 years	40 of 100 (Notable)
21 May 1931	Ulysses 3NE, US	daily low max	6.1 C (43.0 F)	11.7 C (21.1 F)	20 years	28 of 100 (Routine)
21 May 1931	Jaipur, IN	daily rain	38.1 mm (1.5 in)	21.3 mm (0.8 in)	20 years	26 of 100 (Routine)
21 May 1931	Lakin, US	monthly low max	5.6 C (42.1 F)	1.6 C (2.9 F)	38 years	26 of 100 (Routine)
21 May 1931	Tamluk, IN	daily rain	48.3 mm (1.9 in)	28.2 mm (1.1 in)	21 years	25 of 100 (Routine)
21 May 1931	Rocky Ford 2 SE, US	monthly low max	4.4 C (39.9 F)	0.6 C (1.1 F)	38 years	25 of 100 (Routine)
21 May 1931	Cheyenne Wells 2NE, US	daily low max	5.6 C (42.1 F)	7.2 C (13.0 F)	30 years	24 of 100 (Routine)
21 May 1931	Beaver City, US	daily low max	10.6 C (51.1 F)	8.8 C (15.8 F)	25 years	24 of 100 (Routine)
21 May 1931	Newkirk 5NE, US	daily low max	13.3 C (55.9 F)	7.3 C (13.1 F)	25 years	24 of 100 (Routine)
21 May 1931	Hoxie, US	daily low max	7.8 C (46.0 F)	10.0 C (18.0 F)	16 years	23 of 100 (Routine)
21 May 1931	Chugwater, US	daily low min	-10.0 C (14.0 F)	5.0 C (9.0 F)	28 years	23 of 100 (Routine)
21 May 1931	Stuttgart-Stadt, DE	daily rain	25.3 mm (1.0 in)	11.3 mm (0.4 in)	9 years	22 of 100 (Routine)
21 May 1931	Holly, US	daily rain	34.3 mm (1.4 in)	15.2 mm (0.6 in)	16 years	22 of 100 (Routine)
21 May 1931	Winfield 3NE, US	daily low max	10.6 C (51.1 F)	7.7 C (13.9 F)	14 years	22 of 100 (Routine)
21 May 1931	Ovando, US	daily low min	-7.8 C (18.0 F)	3.9 C (7.0 F)	28 years	22 of 100 (Routine)
21 May 1931	Rosebud, US	daily low min	-5.6 C (21.9 F)	4.5 C (8.1 F)	35 years	22 of 100 (Routine)
21 May 1931	Evanston 1 E, US	daily low min	-7.8 C (18.0 F)	3.4 C (6.1 F)	28 years	22 of 100 (Routine)
21 May 1931	San Diego Wbo, US	daily high min	16.7 C (62.1 F)	0.6 C (1.1 F)	45 years	21 of 100 (Routine)
21 May 1931	Lake Moraine, US	daily low max	-2.2 C (28.0 F)	3.9 C (7.0 F)	35 years	21 of 100 (Routine)

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 1931

Records set or tied on this calendar date in each year from 1793 to 1931. 1931 had 488 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 1931-05-21: 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	381
10 to 20	12
20 to 30	6
30 to 40	1
40 to 50	0
50 to 60	0
60 to 70	1