Weather Records on 31 May 2003

831 weather records were set or tied worldwide on 31 May 2003. Highest significance: Grahamstown, ZA.

Key Facts for 31 May 2003

On 31 May 2003, 831 weather records were set or tied at long-record stations worldwide.
540 were record highs and 118 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 71 monthly and 758 daily.
Grahamstown set a daily record precipitation of 130.6 mm (5.1 in) on 31 May 2003.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 435 records.

Record Map

831 stations

831 station records on 31 May 2003 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 2003: highest significance records shown on the map
Station	Country	Type	Value	Significance
Grahamstown	South Africa	Record daily precipitation	130.6 mm (5.1 in)	79 of 100 (Major)
Geisenheim	Germany	Record daily precipitation	33.7 mm (1.3 in)	68 of 100 (Major)
Cork Station	Australia	Record daily precipitation	80.0 mm (3.1 in)	67 of 100 (Major)
Hanty-Mansijsk	Russia	Record daily precipitation	27.9 mm (1.1 in)	67 of 100 (Major)
Port Sudan	Sudan	Record daily precipitation	70.1 mm (2.8 in)	66 of 100 (Major)
Kassala	Sudan	Record daily precipitation	60.7 mm (2.4 in)	66 of 100 (Major)
Arhangelsk	Russia	Record daily precipitation	27.6 mm (1.1 in)	61 of 100 (Major)
Boulia Airport	Australia	Record daily precipitation	36.6 mm (1.4 in)	59 of 100 (Notable)
Lenoir	United States	Record daily precipitation	71.1 mm (2.8 in)	59 of 100 (Notable)
Leusi	Russia	Record daily precipitation	25.1 mm (1.0 in)	58 of 100 (Notable)
Kleiner Feldberg/Taunus	Germany	Record daily precipitation	76.8 mm (3.0 in)	57 of 100 (Notable)
Kofu	Japan	Record daily precipitation	75.9 mm (3.0 in)	56 of 100 (Notable)
Matsue	Japan	Record daily precipitation	104.1 mm (4.1 in)	56 of 100 (Notable)
Ulleungdo	Korea, South	Record daily precipitation	55.6 mm (2.2 in)	49 of 100 (Notable)
Scipio	United States	Record high minimum temperature	17.8 C (64.0 F)	49 of 100 (Notable)
Lucknow Station	Australia	Record daily precipitation	26.0 mm (1.0 in)	47 of 100 (Notable)
Mishima	Japan	Record daily precipitation	78.0 mm (3.1 in)	47 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record high minimum temperature	26.1 C (79.0 F)	46 of 100 (Notable)
Otog Qi	China	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Clausthal-Zellerfeld	Germany	Record daily precipitation	25.7 mm (1.0 in)	45 of 100 (Notable)
Hamamatsu	Japan	Record daily precipitation	122.9 mm (4.8 in)	45 of 100 (Notable)
Vallecito Dam	United States	Record high minimum temperature	13.3 C (55.9 F)	45 of 100 (Notable)
Hiram	United States	Record daily precipitation	36.6 mm (1.4 in)	45 of 100 (Notable)
Freystadt-Oberndorf	Germany	Record daily precipitation	40.8 mm (1.6 in)	44 of 100 (Notable)
Hamada	Japan	Record daily precipitation	115.8 mm (4.6 in)	44 of 100 (Notable)
Mineral-Nye-Vody	Russia	Record daily precipitation	48.5 mm (1.9 in)	44 of 100 (Notable)
Sakai	Japan	Record daily precipitation	81.0 mm (3.2 in)	43 of 100 (Notable)
Walden	United States	Record high minimum temperature	7.8 C (46.0 F)	43 of 100 (Notable)
Bladensburg	Australia	Record daily precipitation	29.0 mm (1.1 in)	42 of 100 (Notable)
Brighton Downs	Australia	Record daily precipitation	31.0 mm (1.2 in)	41 of 100 (Notable)
Chichibu	Japan	Record daily precipitation	58.9 mm (2.3 in)	41 of 100 (Notable)
Fruitland	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Sulphur Springs	United States	Record high maximum temperature	37.2 C (99.0 F)	41 of 100 (Notable)
Levan	United States	Record high minimum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Woodruff	United States	Record high minimum temperature	9.4 C (48.9 F)	41 of 100 (Notable)
Mount Ryde	Australia	Record daily precipitation	25.0 mm (1.0 in)	40 of 100 (Notable)
San Jose de Raices	Mexico	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Poretskoye	Russia	Record low minimum temperature	1.1 C (34.0 F)	40 of 100 (Notable)
Zion Np	United States	Record high minimum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Irako	Japan	Record daily precipitation	102.9 mm (4.1 in)	38 of 100 (Notable)
Shizuoka	Japan	Record daily precipitation	159.8 mm (6.3 in)	38 of 100 (Notable)
Ajiro	Japan	Record daily precipitation	81.0 mm (3.2 in)	38 of 100 (Notable)
Tacambaro	Mexico	Record high maximum temperature	37.8 C (100.0 F)	38 of 100 (Notable)
Smithfield	United States	Record low minimum temperature	2.2 C (36.0 F)	38 of 100 (Notable)
Pembina	United States	Record low minimum temperature	-1.1 C (30.0 F)	38 of 100 (Notable)
Corona Downs	Australia	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Manuel Avila Camacho	Mexico	Record low minimum temperature	11.1 C (52.0 F)	37 of 100 (Notable)
Becanchen	Mexico	Record low maximum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Neozhidannyj	Russia	Record daily precipitation	31.7 mm (1.2 in)	37 of 100 (Notable)
Casa Grande Nm	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Paonia 1SW	United States	Record high minimum temperature	13.3 C (55.9 F)	37 of 100 (Notable)
Saigo	Japan	Record daily precipitation	149.1 mm (5.9 in)	36 of 100 (Notable)
Sukumo	Japan	Record daily precipitation	115.1 mm (4.5 in)	36 of 100 (Notable)
Bartlett 1W	United States	Record daily precipitation	76.5 mm (3.0 in)	36 of 100 (Notable)
Memphis	United States	Record high maximum temperature	40.6 C (105.1 F)	36 of 100 (Notable)
Baratria	Australia	Record daily precipitation	33.8 mm (1.3 in)	35 of 100 (Notable)
Poitiers - Biard	France	Record high maximum temperature	31.3 C (88.3 F)	35 of 100 (Notable)
Nidderau-Windecken	Germany	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
Weilburg (Klaranlage)	Germany	Record daily precipitation	44.4 mm (1.7 in)	34 of 100 (Routine)
Burgwald-Bottendorf	Germany	Record daily precipitation	54.2 mm (2.1 in)	34 of 100 (Routine)

Counts by Type and Timescale

831 records

Records set or tied on 31 May 2003 by type: Highest daily maximum 235, Lowest daily maximum 36, Highest daily minimum 305, Lowest daily minimum 82, Heaviest daily rainfall 172, Heaviest daily snowfall 1.

Records on 31 May 2003 by type
Record type	Records
Highest daily maximum	235
Lowest daily maximum	36
Highest daily minimum	305
Lowest daily minimum	82
Heaviest daily rainfall	172
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 31 May 2003 by timescale: all-time 2, monthly 71, daily 758.

How Much Records Were Beaten By

623 broken records

Margins by which the 623 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 115.4. Ties are not counted.

Top 20 by Significance

31 May 2003

Top 20 records on 31 May 2003 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 2003	Grahamstown, ZA	daily rain	130.6 mm (5.1 in)	115.4 mm (4.5 in)	97 years	79 of 100 (Major)
31 May 2003	Geisenheim, DE	daily rain	33.7 mm (1.3 in)	21.1 mm (0.8 in)	60 years	68 of 100 (Major)
31 May 2003	Cork Station, AU	daily rain	80.0 mm (3.1 in)	68.3 mm (2.7 in)	72 years	67 of 100 (Major)
31 May 2003	Hanty-Mansijsk, RU	daily rain	27.9 mm (1.1 in)	19.4 mm (0.8 in)	57 years	67 of 100 (Major)
31 May 2003	Port Sudan, SD	monthly rain	70.1 mm (2.8 in)	51.0 mm (2.0 in)	43 years	66 of 100 (Major)
31 May 2003	Kassala, SD	monthly rain	60.7 mm (2.4 in)	33.7 mm (1.3 in)	40 years	66 of 100 (Major)
31 May 2003	Arhangelsk, RU	daily rain	27.6 mm (1.1 in)	9.2 mm (0.36 in)	103 years	61 of 100 (Major)
31 May 2003	Boulia Airport, AU	daily rain	36.6 mm (1.4 in)	21.9 mm (0.9 in)	113 years	59 of 100 (Notable)
31 May 2003	Lenoir, US	daily rain	71.1 mm (2.8 in)	44.7 mm (1.8 in)	52 years	59 of 100 (Notable)
31 May 2003	Leusi, RU	daily rain	25.1 mm (1.0 in)	14.3 mm (0.6 in)	53 years	58 of 100 (Notable)
31 May 2003	Kleiner Feldberg/Taunus, DE	monthly rain	76.8 mm (3.0 in)	32.3 mm (1.3 in)	4 years	57 of 100 (Notable)
31 May 2003	Kofu, JP	daily rain	75.9 mm (3.0 in)	61.7 mm (2.4 in)	37 years	56 of 100 (Notable)
31 May 2003	Matsue, JP	daily rain	104.1 mm (4.1 in)	58.5 mm (2.3 in)	49 years	56 of 100 (Notable)
31 May 2003	Ulleungdo, KR	daily rain	55.6 mm (2.2 in)	35.6 mm (1.4 in)	62 years	49 of 100 (Notable)
31 May 2003	Scipio, US	daily high min	17.8 C (64.0 F)	4.5 C (8.1 F)	102 years	49 of 100 (Notable)
31 May 2003	Lucknow Station, AU	daily rain	26.0 mm (1.0 in)	15.6 mm (0.6 in)	81 years	47 of 100 (Notable)
31 May 2003	Mishima, JP	daily rain	78.0 mm (3.1 in)	45.8 mm (1.8 in)	49 years	47 of 100 (Notable)
31 May 2003	Tarpon Spgs Sewage Plt, US	daily high min	26.1 C (79.0 F)	1.7 C (3.1 F)	109 years	46 of 100 (Notable)
31 May 2003	Otog Qi, CN	daily rain	25.4 mm (1.0 in)	14.4 mm (0.6 in)	42 years	45 of 100 (Notable)
31 May 2003	Clausthal-Zellerfeld, DE	daily rain	25.7 mm (1.0 in)	8.9 mm (0.35 in)	76 years	45 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

1811 to 2003

Records set or tied on this calendar date in each year from 1811 to 2003. 2003 had 831 records.

Counts for years before the ledger starts come from the same station rules.

Records on 05-31 in each year
Year	Records
1811	1
1818	3
1827	1
1836	2
1845	1
1847	1
1853	2
1855	2
1858	1
1864	2
1865	1
1866	1
1867	1
1868	4
1869	1
1871	2
1873	3
1874	1
1877	1
1878	2
1879	2
1880	3
1882	1
1883	1
1885	1
1888	1
1889	2
1890	1
1892	1
1893	4
1894	2
1895	8
1897	5
1898	7
1899	1
1900	2
1901	9
1902	9
1903	17
1904	19
1905	7
1906	11
1907	20
1908	12
1909	8
1910	26
1911	20
1912	15
1913	83
1914	20
1915	23
1916	23
1917	13
1918	20
1919	44
1920	46
1921	157
1922	49
1923	98
1924	152
1925	226
1926	228
1927	121
1928	67
1929	246
1930	612
1931	223
1932	181
1933	397
1934	782
1935	156
1936	559
1937	462
1938	424
1939	461
1940	383
1941	410
1942	364
1943	552
1944	372
1945	457
1946	380
1947	439
1948	295
1949	303
1950	467
1951	640
1952	374
1953	654
1954	445
1955	534
1956	632
1957	304
1958	429
1959	459
1960	247
1961	472
1962	565
1963	354
1964	1,237
1965	494
1966	601
1967	987
1968	276
1969	555
1970	573
1971	714
1972	1,127
1973	418
1974	473
1975	797
1976	435
1977	605
1978	873
1979	915
1980	517
1981	775
1982	817
1983	1,494
1984	2,047
1985	790
1986	1,365
1987	822
1988	1,255
1989	912
1990	900
1991	1,381
1992	1,031
1993	982
1994	776
1995	693
1996	946
1997	1,163
1998	1,215
1999	790
2000	1,172
2001	1,047
2002	1,162
2003	831
2004	1,071
2005	724
2006	1,045
2007	793
2008	809
2009	570
2010	741
2011	1,498
2012	764
2013	1,100
2014	565
2015	704
2016	402
2017	440
2018	1,211
2019	420
2020	673
2021	834
2022	902
2023	454
2024	809
2025	1,204
2026	536

Download the Data

Data for records on 2003-05-31: 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	591
20 to 40	18
40 to 60	10
60 to 80	3
80 to 100	0
100 to 120	1