Weather Records on 21 May 2019

1,668 weather records were set or tied worldwide on 21 May 2019. Highest significance: Walnut 4S, US.

Key Facts for 21 May 2019

On 21 May 2019, 1,668 weather records were set or tied at long-record stations worldwide.
317 were record highs and 750 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 39 monthly and 1,623 daily.
Walnut 4S set a daily record precipitation of 102.4 mm (4.0 in) on 21 May 2019.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 453 records.

Record Map

1,668 stations

1,668 station records on 21 May 2019 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 2019: highest significance records shown on the map
Station	Country	Type	Value	Significance
Walnut 4S	United States	Record daily precipitation	102.4 mm (4.0 in)	80 of 100 (Exceptional)
Agate 3 E	United States	Record daily snowfall	20.3 cm (8.0 in)	79 of 100 (Major)
Newkirk 5NE	United States	Record daily precipitation	173.0 mm (6.8 in)	76 of 100 (Major)
Columbus	United States	Record daily precipitation	113.0 mm (4.4 in)	74 of 100 (Major)
Crescent 5WSW	United States	Record daily precipitation	115.6 mm (4.6 in)	71 of 100 (Major)
Mt Rushmore Nmem	United States	Record snow depth	45.7 cm (18.0 in)	71 of 100 (Major)
Mesa Verde Np	United States	Record daily snowfall	12.7 cm (5.0 in)	69 of 100 (Major)
Iola 1 W	United States	Record daily precipitation	101.6 mm (4.0 in)	67 of 100 (Major)
Osawatomie	United States	Record daily precipitation	106.7 mm (4.2 in)	67 of 100 (Major)
Custer	United States	Record snow depth	27.9 cm (11.0 in)	67 of 100 (Major)
Lockwood	United States	Record daily precipitation	92.7 mm (3.6 in)	66 of 100 (Major)
Oswego 1 N	United States	Record daily precipitation	99.1 mm (3.9 in)	65 of 100 (Major)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	42.5 mm (1.7 in)	64 of 100 (Major)
Steamboat Springs	United States	Record daily precipitation	30.2 mm (1.2 in)	64 of 100 (Major)
Stotten	Germany	Record daily precipitation	92.7 mm (3.6 in)	63 of 100 (Major)
Howard 2SE	United States	Record daily precipitation	171.5 mm (6.8 in)	63 of 100 (Major)
Masljanino	Russia	Record daily precipitation	28.2 mm (1.1 in)	62 of 100 (Major)
Arkansas City	United States	Record daily precipitation	149.4 mm (5.9 in)	62 of 100 (Major)
Madison	United States	Record daily precipitation	108.0 mm (4.3 in)	62 of 100 (Major)
Claremore 2 ENE	United States	Record daily precipitation	145.3 mm (5.7 in)	62 of 100 (Major)
Custer	United States	Record daily precipitation	58.4 mm (2.3 in)	62 of 100 (Major)
Wellington	United States	Record daily precipitation	115.8 mm (4.6 in)	61 of 100 (Major)
Marshall	United States	Record daily precipitation	182.9 mm (7.2 in)	61 of 100 (Major)
Rotan	United States	Record daily precipitation	76.2 mm (3.0 in)	61 of 100 (Major)
Steamboat Springs	United States	Record snow depth	10.2 cm (4.0 in)	60 of 100 (Major)
Telluride 4WNW	United States	Record daily snowfall	21.6 cm (8.5 in)	60 of 100 (Major)
Augusta	United States	Record daily precipitation	118.4 mm (4.7 in)	60 of 100 (Major)
Winfield 3NE	United States	Record daily precipitation	119.9 mm (4.7 in)	60 of 100 (Major)
Flagler 1S	United States	Record daily snowfall	10.2 cm (4.0 in)	59 of 100 (Notable)
Grenola 1 N	United States	Record daily precipitation	197.1 mm (7.8 in)	59 of 100 (Notable)
Oxford	United States	Record daily precipitation	156.2 mm (6.1 in)	59 of 100 (Notable)
Custer	United States	Record daily snowfall	27.9 cm (11.0 in)	59 of 100 (Notable)
Perryton	United States	Record daily precipitation	58.4 mm (2.3 in)	59 of 100 (Notable)
Gridley	United States	Record daily precipitation	113.0 mm (4.4 in)	58 of 100 (Notable)
Thrall 3SSE	United States	Record daily precipitation	150.1 mm (5.9 in)	58 of 100 (Notable)
Imperial Muni AP	United States	Record daily precipitation	44.5 mm (1.8 in)	58 of 100 (Notable)
Tokushima	Japan	Record daily precipitation	164.6 mm (6.5 in)	57 of 100 (Notable)
Castle Rock	United States	Record daily snowfall	10.2 cm (4.0 in)	57 of 100 (Notable)
Potwin	United States	Record daily precipitation	110.5 mm (4.4 in)	57 of 100 (Notable)
Billings	United States	Record daily precipitation	156.0 mm (6.1 in)	57 of 100 (Notable)
Cheyenne	United States	Record snow depth	20.0 cm (7.9 in)	57 of 100 (Notable)
Climax	United States	Record daily snowfall	25.4 cm (10.0 in)	55 of 100 (Notable)
Ashland	United States	Record daily precipitation	64.0 mm (2.5 in)	55 of 100 (Notable)
Burns 5W	United States	Record daily precipitation	105.7 mm (4.2 in)	55 of 100 (Notable)
Chandler	United States	Record daily precipitation	98.6 mm (3.9 in)	55 of 100 (Notable)
Mansfield	United States	Record daily precipitation	87.4 mm (3.4 in)	54 of 100 (Notable)
Ft Meade	United States	Record daily precipitation	46.2 mm (1.8 in)	54 of 100 (Notable)
Pierre Rgnl AP	United States	Record daily precipitation	39.1 mm (1.5 in)	54 of 100 (Notable)
Waghausel-Kirrlach	Germany	Record daily precipitation	34.3 mm (1.4 in)	53 of 100 (Notable)
Cedar Vale 5SSE	United States	Record daily precipitation	151.1 mm (5.9 in)	53 of 100 (Notable)
Billings 1SW	United States	Record daily precipitation	93.7 mm (3.7 in)	53 of 100 (Notable)
Nevada Wtp	United States	Record daily precipitation	114.6 mm (4.5 in)	53 of 100 (Notable)
Hill City	United States	Record snow depth	10.2 cm (4.0 in)	53 of 100 (Notable)
Rochelle 7ENE	United States	Record daily snowfall	8.6 cm (3.4 in)	53 of 100 (Notable)
Burro Mountain	United States	Record daily precipitation	40.6 mm (1.6 in)	53 of 100 (Notable)
Fall Rvr Lake	United States	Record daily precipitation	162.8 mm (6.4 in)	52 of 100 (Notable)
Ottawa	United States	Record daily precipitation	71.9 mm (2.8 in)	52 of 100 (Notable)
Peck 4 SSW	United States	Record daily precipitation	104.6 mm (4.1 in)	52 of 100 (Notable)
Mtn Grove 2 N	United States	Record daily precipitation	70.4 mm (2.8 in)	51 of 100 (Notable)
Warrensburg 4NW	United States	Record daily precipitation	52.6 mm (2.1 in)	51 of 100 (Notable)

Counts by Type and Timescale

1,668 records

Records set or tied on 21 May 2019 by type: Highest daily maximum 106, Lowest daily maximum 606, Highest daily minimum 211, Lowest daily minimum 144, Heaviest daily rainfall 458, Heaviest daily snowfall 86, Deepest snow cover 57.

Records on 21 May 2019 by type
Record type	Records
Highest daily maximum	106
Lowest daily maximum	606
Highest daily minimum	211
Lowest daily minimum	144
Heaviest daily rainfall	458
Heaviest daily snowfall	86
Deepest snow cover	57

Records on 21 May 2019 by timescale: all-time 6, monthly 39, daily 1,623.

How Much Records Were Beaten By

1,423 broken records

Margins by which the 1,423 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 500.0. Ties are not counted.

Top 20 by Significance

21 May 2019

Top 20 records on 21 May 2019 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 2019	Walnut 4S, US	daily rain	102.4 mm (4.0 in)	65.3 mm (2.6 in)	116 years	80 of 100 (Exceptional)
21 May 2019	Agate 3 E, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	116 years	79 of 100 (Major)
21 May 2019	Newkirk 5NE, US	monthly rain	173.0 mm (6.8 in)	46.0 mm (1.8 in)	109 years	76 of 100 (Major)
21 May 2019	Columbus, US	daily rain	113.0 mm (4.4 in)	73.4 mm (2.9 in)	81 years	74 of 100 (Major)
21 May 2019	Crescent 5WSW, US	daily rain	115.6 mm (4.6 in)	83.8 mm (3.3 in)	77 years	71 of 100 (Major)
21 May 2019	Mt Rushmore Nmem, US	monthly snow depth	45.7 cm (18.0 in)	22.8 cm (9.0 in)	54 years	71 of 100 (Major)
21 May 2019	Mesa Verde Np, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	96 years	69 of 100 (Major)
21 May 2019	Iola 1 W, US	daily rain	101.6 mm (4.0 in)	50.3 mm (2.0 in)	80 years	67 of 100 (Major)
21 May 2019	Osawatomie, US	daily rain	106.7 mm (4.2 in)	61.0 mm (2.4 in)	69 years	67 of 100 (Major)
21 May 2019	Custer, US	daily snow depth	27.9 cm (11.0 in)	27.9 cm (11.0 in)	92 years	67 of 100 (Major)
21 May 2019	Lockwood, US	daily rain	92.7 mm (3.6 in)	48.2 mm (1.9 in)	80 years	66 of 100 (Major)
21 May 2019	Oswego 1 N, US	daily rain	99.1 mm (3.9 in)	57.4 mm (2.3 in)	69 years	65 of 100 (Major)
21 May 2019	Kaisersbach-Cronhutte, DE	daily rain	42.5 mm (1.7 in)	17.8 mm (0.7 in)	119 years	64 of 100 (Major)
21 May 2019	Steamboat Springs, US	daily rain	30.2 mm (1.2 in)	17.0 mm (0.7 in)	78 years	64 of 100 (Major)
21 May 2019	Stotten, DE	monthly rain	92.7 mm (3.6 in)	27.6 mm (1.1 in)	45 years	63 of 100 (Major)
21 May 2019	Howard 2SE, US	monthly rain	171.5 mm (6.8 in)	59.7 mm (2.4 in)	29 years	63 of 100 (Major)
21 May 2019	Masljanino, RU	daily rain	28.2 mm (1.1 in)	13.6 mm (0.5 in)	73 years	62 of 100 (Major)
21 May 2019	Arkansas City, US	daily rain	149.4 mm (5.9 in)	85.4 mm (3.4 in)	41 years	62 of 100 (Major)
21 May 2019	Madison, US	daily rain	108.0 mm (4.3 in)	61.5 mm (2.4 in)	41 years	62 of 100 (Major)
21 May 2019	Claremore 2 ENE, US	daily rain	145.3 mm (5.7 in)	58.2 mm (2.3 in)	61 years	62 of 100 (Major)

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 2019

Records set or tied on this calendar date in each year from 1793 to 2019. 2019 had 1,668 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 2019-05-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Margin	Records
0 to 100	1,385
100 to 200	32
200 to 300	5
300 to 400	0
400 to 500	1