Weather Records on 21 May 2004

898 weather records were set or tied worldwide on 21 May 2004. Highest significance: Spokane Intl AP, US.

Key Facts for 21 May 2004

On 21 May 2004, 898 weather records were set or tied at long-record stations worldwide.
544 were record highs and 124 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 34 monthly and 860 daily.
Spokane Intl AP set an all-time record daily precipitation of 55.6 mm (2.2 in) on 21 May 2004.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 458 records.

Record Map

898 stations

898 station records on 21 May 2004 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 2004: highest significance records shown on the map
Station	Country	Type	Value	Significance
Spokane Intl AP	United States	Record daily precipitation	55.6 mm (2.2 in)	87 of 100 (Exceptional)
Eaton Rapids	United States	Record daily precipitation	64.8 mm (2.6 in)	67 of 100 (Major)
Suifenhe	China	Record daily precipitation	76.5 mm (3.0 in)	65 of 100 (Major)
Tiffin	United States	Record daily precipitation	59.9 mm (2.4 in)	63 of 100 (Major)
Steubenville	United States	Record daily precipitation	47.5 mm (1.9 in)	59 of 100 (Notable)
Strasbourg-Entzheim	France	Record daily precipitation	38.6 mm (1.5 in)	58 of 100 (Notable)
Kofu	Japan	Record daily precipitation	63.5 mm (2.5 in)	58 of 100 (Notable)
Atlanta 5 WNW	United States	Record daily precipitation	38.6 mm (1.5 in)	53 of 100 (Notable)
Sendai	Japan	Record daily precipitation	83.6 mm (3.3 in)	52 of 100 (Notable)
Angelica	United States	Record daily precipitation	36.3 mm (1.4 in)	52 of 100 (Notable)
Chippewa Lake	United States	Record daily precipitation	43.9 mm (1.7 in)	52 of 100 (Notable)
Abu Hamed	Sudan	Record daily precipitation	59.9 mm (2.4 in)	51 of 100 (Notable)
Franklin	United States	Record daily precipitation	37.1 mm (1.5 in)	50 of 100 (Notable)
Ritzville 1 SSE	United States	Record daily precipitation	25.7 mm (1.0 in)	50 of 100 (Notable)
Erie Intl AP	United States	Record daily precipitation	42.9 mm (1.7 in)	50 of 100 (Notable)
Lima Wwtp	United States	Record daily precipitation	44.5 mm (1.8 in)	49 of 100 (Notable)
Pittsburgh ASOS	United States	Record daily precipitation	41.4 mm (1.6 in)	49 of 100 (Notable)
Kumagaya	Japan	Record daily precipitation	62.5 mm (2.5 in)	48 of 100 (Notable)
Verma	Norway	Record daily precipitation	27.5 mm (1.1 in)	48 of 100 (Notable)
Poset	Russia	Record daily precipitation	66.6 mm (2.6 in)	48 of 100 (Notable)
Jackson Reynolds Fld	United States	Record daily precipitation	51.8 mm (2.0 in)	48 of 100 (Notable)
Springfield Abraham Lincoln Ca	United States	Record high minimum temperature	23.3 C (73.9 F)	48 of 100 (Notable)
Wakamatsu	Japan	Record daily precipitation	51.6 mm (2.0 in)	47 of 100 (Notable)
Upper Sandusky	United States	Record daily precipitation	40.6 mm (1.6 in)	47 of 100 (Notable)
Kailua 446	United States	Record low minimum temperature	12.2 C (54.0 F)	47 of 100 (Notable)
Pandora	United States	Record daily precipitation	86.6 mm (3.4 in)	46 of 100 (Notable)
Reedsburg Wwtp	United States	Record daily precipitation	34.0 mm (1.3 in)	46 of 100 (Notable)
Miyakejima	Japan	Record daily precipitation	124.5 mm (4.9 in)	45 of 100 (Notable)
Altoona 3 W	United States	Record daily precipitation	59.7 mm (2.4 in)	45 of 100 (Notable)
Viroqua	United States	Record daily precipitation	82.6 mm (3.3 in)	45 of 100 (Notable)
Eschbach	Germany	Record daily precipitation	31.2 mm (1.2 in)	44 of 100 (Notable)
Del Bonita	United States	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Arlington	United States	Record daily precipitation	75.2 mm (3.0 in)	44 of 100 (Notable)
Sterling	United States	Record high minimum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Ann Arbor U of Mich	United States	Record daily precipitation	55.6 mm (2.2 in)	43 of 100 (Notable)
Portsmouth-Sciotoville	United States	Record high minimum temperature	20.6 C (69.1 F)	43 of 100 (Notable)
Lone Rock Tri Co AP	United States	Record daily precipitation	80.3 mm (3.2 in)	43 of 100 (Notable)
Nashville 1 E	United States	Record high minimum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Logansport Cicott St	United States	Record high minimum temperature	21.1 C (70.0 F)	42 of 100 (Notable)
Steffenville	United States	Record high minimum temperature	22.2 C (72.0 F)	42 of 100 (Notable)
Tionesta 2 SE Lake	United States	Record daily precipitation	76.7 mm (3.0 in)	42 of 100 (Notable)
Burlington Muni AP	United States	Record high minimum temperature	21.1 C (70.0 F)	42 of 100 (Notable)
Tuttlingen	Germany	Record daily precipitation	25.6 mm (1.0 in)	41 of 100 (Notable)
Tokyo	Japan	Record daily precipitation	72.4 mm (2.9 in)	41 of 100 (Notable)
Ciudad Real	Spain	Record daily precipitation	32.8 mm (1.3 in)	41 of 100 (Notable)
Anamosa 1 WNW	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Wellington	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Nevada Wtp	United States	Record high minimum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Bridger 2 N	United States	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Hebgen Dam	United States	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Findlay Wpcc	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Mason City Muni AP	United States	Record daily precipitation	116.6 mm (4.6 in)	41 of 100 (Notable)
Grinnell 3 SW	United States	Record high minimum temperature	19.4 C (66.9 F)	40 of 100 (Notable)
Spencer 1 N	United States	Record daily precipitation	75.7 mm (3.0 in)	40 of 100 (Notable)
Coshocton Wpc Plt	United States	Record daily precipitation	57.4 mm (2.3 in)	40 of 100 (Notable)
Wisconsin Dells Wwtp	United States	Record daily precipitation	53.3 mm (2.1 in)	40 of 100 (Notable)
Kilauea 1134	United States	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Gage AP	United States	Record high minimum temperature	20.0 C (68.0 F)	40 of 100 (Notable)
El Paso de Iritu	Mexico	Record low minimum temperature	5.6 C (42.1 F)	39 of 100 (Notable)
Coatepec de Los Olivos	Mexico	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)

Counts by Type and Timescale

898 records

Records set or tied on 21 May 2004 by type: Highest daily maximum 122, Lowest daily maximum 53, Highest daily minimum 422, Lowest daily minimum 71, Heaviest daily rainfall 220, Heaviest daily snowfall 1, Deepest snow cover 9.

Records on 21 May 2004 by type
Record type	Records
Highest daily maximum	122
Lowest daily maximum	53
Highest daily minimum	422
Lowest daily minimum	71
Heaviest daily rainfall	220
Heaviest daily snowfall	1
Deepest snow cover	9

Records on 21 May 2004 by timescale: all-time 4, monthly 34, daily 860.

How Much Records Were Beaten By

660 broken records

Margins by which the 660 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 79.0. Ties are not counted.

Top 20 by Significance

21 May 2004

Top 20 records on 21 May 2004 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 2004	Spokane Intl AP, US	all-time rain	55.6 mm (2.2 in)	13.4 mm (0.5 in)	106 years	87 of 100 (Exceptional)
21 May 2004	Eaton Rapids, US	daily rain	64.8 mm (2.6 in)	36.9 mm (1.5 in)	61 years	67 of 100 (Major)
21 May 2004	Suifenhe, CN	monthly rain	76.5 mm (3.0 in)	34.2 mm (1.3 in)	36 years	65 of 100 (Major)
21 May 2004	Tiffin, US	daily rain	59.9 mm (2.4 in)	22.8 mm (0.9 in)	96 years	63 of 100 (Major)
21 May 2004	Steubenville, US	daily rain	47.5 mm (1.9 in)	34.5 mm (1.4 in)	57 years	59 of 100 (Notable)
21 May 2004	Strasbourg-Entzheim, FR	daily rain	38.6 mm (1.5 in)	20.1 mm (0.8 in)	60 years	58 of 100 (Notable)
21 May 2004	Kofu, JP	daily rain	63.5 mm (2.5 in)	41.8 mm (1.6 in)	50 years	58 of 100 (Notable)
21 May 2004	Atlanta 5 WNW, US	daily rain	38.6 mm (1.5 in)	22.9 mm (0.9 in)	65 years	53 of 100 (Notable)
21 May 2004	Sendai, JP	daily rain	83.6 mm (3.3 in)	58.1 mm (2.3 in)	24 years	52 of 100 (Notable)
21 May 2004	Angelica, US	daily rain	36.3 mm (1.4 in)	12.4 mm (0.5 in)	89 years	52 of 100 (Notable)
21 May 2004	Chippewa Lake, US	daily rain	43.9 mm (1.7 in)	15.5 mm (0.6 in)	84 years	52 of 100 (Notable)
21 May 2004	Abu Hamed, SD	daily rain	59.9 mm (2.4 in)	57.9 mm (2.3 in)	24 years	51 of 100 (Notable)
21 May 2004	Franklin, US	daily rain	37.1 mm (1.5 in)	16.8 mm (0.7 in)	71 years	50 of 100 (Notable)
21 May 2004	Ritzville 1 SSE, US	monthly rain	25.7 mm (1.0 in)	1.8 mm (0.07 in)	87 years	50 of 100 (Notable)
21 May 2004	Erie Intl AP, US	daily rain	42.9 mm (1.7 in)	22.3 mm (0.9 in)	57 years	50 of 100 (Notable)
21 May 2004	Lima Wwtp, US	daily rain	44.5 mm (1.8 in)	19.9 mm (0.8 in)	61 years	49 of 100 (Notable)
21 May 2004	Pittsburgh ASOS, US	daily rain	41.4 mm (1.6 in)	30.2 mm (1.2 in)	43 years	49 of 100 (Notable)
21 May 2004	Kumagaya, JP	daily rain	62.5 mm (2.5 in)	35.0 mm (1.4 in)	50 years	48 of 100 (Notable)
21 May 2004	Verma, NO	daily rain	27.5 mm (1.1 in)	11.5 mm (0.5 in)	30 years	48 of 100 (Notable)
21 May 2004	Poset, RU	daily rain	66.6 mm (2.6 in)	38.2 mm (1.5 in)	8 years	48 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 2004

Records set or tied on this calendar date in each year from 1793 to 2004. 2004 had 898 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 2004-05-21: 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	563
10 to 20	43
20 to 30	29
30 to 40	15
40 to 50	5
50 to 60	3
60 to 70	0
70 to 80	2