Weather Records on 31 May 1997

1,163 weather records were set or tied worldwide on 31 May 1997. Highest significance: Jackson, US.

Key Facts for 31 May 1997

On 31 May 1997, 1,163 weather records were set or tied at long-record stations worldwide.
532 were record highs and 323 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 89 monthly and 1,071 daily.
Jackson set a daily record precipitation of 115.3 mm (4.5 in) on 31 May 1997.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 433 records.

Record Map

1,163 stations

1,163 station records on 31 May 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jackson	United States	Record daily precipitation	115.3 mm (4.5 in)	74 of 100 (Major)
Salem AP (McNary Field)	United States	Record daily precipitation	39.6 mm (1.6 in)	72 of 100 (Major)
Boonville 1S	United States	Record daily precipitation	72.6 mm (2.9 in)	64 of 100 (Major)
Mt Vernon	United States	Record daily precipitation	80.0 mm (3.1 in)	64 of 100 (Major)
Petrun	Russia	Record daily precipitation	36.1 mm (1.4 in)	63 of 100 (Major)
Kent	United States	Record daily precipitation	45.5 mm (1.8 in)	62 of 100 (Major)
Toledo FAA AP	United States	Record daily precipitation	52.1 mm (2.1 in)	61 of 100 (Major)
Matanuska Exp Farm	United States	Record daily precipitation	28.7 mm (1.1 in)	57 of 100 (Notable)
Lexington Bluegrass AP	United States	Record daily precipitation	72.4 mm (2.9 in)	56 of 100 (Notable)
Berlik	Kazakhstan	Record daily precipitation	26.9 mm (1.1 in)	54 of 100 (Notable)
Harrisburg	United States	Record daily precipitation	104.1 mm (4.1 in)	54 of 100 (Notable)
Independence 1W	United States	Record daily precipitation	94.0 mm (3.7 in)	53 of 100 (Notable)
Selmer	United States	Record daily precipitation	110.0 mm (4.3 in)	53 of 100 (Notable)
Urbana Wrf	United States	Record daily precipitation	88.9 mm (3.5 in)	52 of 100 (Notable)
Tullahoma	United States	Record daily precipitation	72.1 mm (2.8 in)	51 of 100 (Notable)
Wilbur	United States	Record daily precipitation	51.6 mm (2.0 in)	51 of 100 (Notable)
Tonghe	China	Record daily precipitation	47.7 mm (1.9 in)	48 of 100 (Notable)
Marble Hill	United States	Record daily precipitation	89.9 mm (3.5 in)	48 of 100 (Notable)
Cerro de Ortega	Mexico	Record daily precipitation	47.8 mm (1.9 in)	47 of 100 (Notable)
Ojai	United States	Record high minimum temperature	17.8 C (64.0 F)	47 of 100 (Notable)
Arkabutla Dam	United States	Record daily precipitation	89.4 mm (3.5 in)	47 of 100 (Notable)
Vernon	United States	Record daily precipitation	94.0 mm (3.7 in)	45 of 100 (Notable)
Bandon 2 NNE	United States	Record daily precipitation	33.0 mm (1.3 in)	45 of 100 (Notable)
Buckley 1 NE	United States	Record daily precipitation	40.6 mm (1.6 in)	45 of 100 (Notable)
Arad	Romania	Record low maximum temperature	12.9 C (55.2 F)	44 of 100 (Notable)
Santa Paula	United States	Record high minimum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
San Sebastian - Igueldo	Spain	Record daily precipitation	167.7 mm (6.6 in)	42 of 100 (Notable)
Livingston	United States	Record low maximum temperature	20.0 C (68.0 F)	42 of 100 (Notable)
Half Moon Bay	United States	Record high maximum temperature	25.0 C (77.0 F)	42 of 100 (Notable)
Carbondale Sewage Plt	United States	Record daily precipitation	105.2 mm (4.1 in)	42 of 100 (Notable)
Grand Twr 2 N	United States	Record daily precipitation	105.4 mm (4.1 in)	42 of 100 (Notable)
1 WSW Princeton	United States	Record daily precipitation	70.9 mm (2.8 in)	42 of 100 (Notable)
Leeds	United States	Record daily precipitation	51.3 mm (2.0 in)	41 of 100 (Notable)
Saguache	United States	Record high minimum temperature	9.4 C (48.9 F)	41 of 100 (Notable)
Columbus	United States	Record daily precipitation	53.6 mm (2.1 in)	41 of 100 (Notable)
Centerville 5 NE	United States	Record daily precipitation	72.4 mm (2.9 in)	41 of 100 (Notable)
Lewisburg Exp STN	United States	Record daily precipitation	49.3 mm (1.9 in)	41 of 100 (Notable)
Vasteras-Hasslo	Sweden	Record low minimum temperature	-1.7 C (28.9 F)	40 of 100 (Notable)
Salem	United States	Record daily precipitation	79.2 mm (3.1 in)	40 of 100 (Notable)
Hernando	United States	Record daily precipitation	68.6 mm (2.7 in)	40 of 100 (Notable)
Lake Cormorant	United States	Record daily precipitation	50.8 mm (2.0 in)	40 of 100 (Notable)
Fredericktown	United States	Record daily precipitation	71.1 mm (2.8 in)	40 of 100 (Notable)
Vancouver 4 NNE	United States	Record high minimum temperature	16.7 C (62.1 F)	40 of 100 (Notable)
Palmer Job Corps	United States	Record daily precipitation	34.8 mm (1.4 in)	40 of 100 (Notable)
San Antonio Las Alazanas (Smn	Mexico	Record daily precipitation	43.9 mm (1.7 in)	39 of 100 (Notable)
Chapulco	Mexico	Record low maximum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Berkeley	United States	Record high minimum temperature	15.6 C (60.1 F)	39 of 100 (Notable)
Lodi	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Shelbyville Sewage Plt	United States	Record daily precipitation	50.3 mm (2.0 in)	39 of 100 (Notable)
Charleston	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
San Francisco Dwtn	United States	Record high minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Linkoeping-Malmslaett	Sweden	Record low minimum temperature	0.0 C (32.0 F)	38 of 100 (Notable)
Ellington	United States	Record daily precipitation	101.6 mm (4.0 in)	38 of 100 (Notable)
Kirchdorf/Poel	Germany	Record low minimum temperature	3.2 C (37.8 F)	37 of 100 (Notable)
Buzau	Romania	Record low maximum temperature	16.6 C (61.9 F)	37 of 100 (Notable)
Tucson WFO	United States	Record high maximum temperature	42.2 C (108.0 F)	37 of 100 (Notable)
Tooele	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Glenns Ferry	United States	Record high minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Coffeeville	United States	Record daily precipitation	46.7 mm (1.8 in)	36 of 100 (Notable)
Billings 1SW	United States	Record daily precipitation	67.1 mm (2.6 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,163 records

Records set or tied on 31 May 1997 by type: Highest daily maximum 247, Lowest daily maximum 130, Highest daily minimum 285, Lowest daily minimum 193, Heaviest daily rainfall 296, Deepest snow cover 12.

Records on 31 May 1997 by type
Record type	Records
Highest daily maximum	247
Lowest daily maximum	130
Highest daily minimum	285
Lowest daily minimum	193
Heaviest daily rainfall	296
Heaviest daily snowfall	0
Deepest snow cover	12

Records on 31 May 1997 by timescale: all-time 3, monthly 89, daily 1,071.

How Much Records Were Beaten By

898 broken records

Margins by which the 898 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 560.0. Ties are not counted.

Top 20 by Significance

31 May 1997

Top 20 records on 31 May 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1997	Jackson, US	daily rain	115.3 mm (4.5 in)	51.0 mm (2.0 in)	103 years	74 of 100 (Major)
31 May 1997	Salem AP (McNary Field), US	daily rain	39.6 mm (1.6 in)	18.5 mm (0.7 in)	97 years	72 of 100 (Major)
31 May 1997	Boonville 1S, US	daily rain	72.6 mm (2.9 in)	63.2 mm (2.5 in)	47 years	64 of 100 (Major)
31 May 1997	Mt Vernon, US	daily rain	80.0 mm (3.1 in)	47.0 mm (1.9 in)	70 years	64 of 100 (Major)
31 May 1997	Petrun, RU	monthly rain	36.1 mm (1.4 in)	8.4 mm (0.33 in)	52 years	63 of 100 (Major)
31 May 1997	Kent, US	monthly rain	45.5 mm (1.8 in)	11.2 mm (0.4 in)	76 years	62 of 100 (Major)
31 May 1997	Toledo FAA AP, US	monthly rain	52.1 mm (2.1 in)	22.4 mm (0.9 in)	21 years	61 of 100 (Major)
31 May 1997	Matanuska Exp Farm, US	monthly rain	28.7 mm (1.1 in)	7.6 mm (0.30 in)	57 years	57 of 100 (Notable)
31 May 1997	Lexington Bluegrass AP, US	daily rain	72.4 mm (2.9 in)	42.4 mm (1.7 in)	23 years	56 of 100 (Notable)
31 May 1997	Berlik, KZ	daily rain	26.9 mm (1.1 in)	18.4 mm (0.7 in)	34 years	54 of 100 (Notable)
31 May 1997	Harrisburg, US	daily rain	104.1 mm (4.1 in)	62.2 mm (2.4 in)	15 years	54 of 100 (Notable)
31 May 1997	Independence 1W, US	daily rain	94.0 mm (3.7 in)	75.7 mm (3.0 in)	30 years	53 of 100 (Notable)
31 May 1997	Selmer, US	daily rain	110.0 mm (4.3 in)	71.9 mm (2.8 in)	20 years	53 of 100 (Notable)
31 May 1997	Urbana Wrf, US	monthly rain	88.9 mm (3.5 in)	8.9 mm (0.35 in)	81 years	52 of 100 (Notable)
31 May 1997	Tullahoma, US	daily rain	72.1 mm (2.8 in)	27.4 mm (1.1 in)	71 years	51 of 100 (Notable)
31 May 1997	Wilbur, US	all-time rain	51.6 mm (2.0 in)	9.2 mm (0.36 in)	17 years	51 of 100 (Notable)
31 May 1997	Tonghe, CN	monthly rain	47.7 mm (1.9 in)	12.0 mm (0.5 in)	44 years	48 of 100 (Notable)
31 May 1997	Marble Hill, US	daily rain	89.9 mm (3.5 in)	24.9 mm (1.0 in)	70 years	48 of 100 (Notable)
31 May 1997	Cerro de Ortega, MX	daily rain	47.8 mm (1.9 in)	46.0 mm (1.8 in)	15 years	47 of 100 (Notable)
31 May 1997	Ojai, US	daily high min	17.8 C (64.0 F)	3.4 C (6.1 F)	90 years	47 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 1997

Records set or tied on this calendar date in each year from 1811 to 1997. 1997 had 1,163 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 1997-05-31: 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 100	887
100 to 200	6
200 to 300	1
300 to 400	0
400 to 500	3
500 to 600	1