Weather Records on 31 May 1968

276 weather records were set or tied worldwide on 31 May 1968. Highest significance: Mullen 3S, US.

Key Facts for 31 May 1968

On 31 May 1968, 276 weather records were set or tied at long-record stations worldwide.
63 were record highs and 59 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 12 monthly and 263 daily.
Mullen 3S set an all-time record daily precipitation of 165.6 mm (6.5 in) on 31 May 1968.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 439 records.

Record Map

276 stations

276 station records on 31 May 1968 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1968: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mullen 3S	United States	Record daily precipitation	165.6 mm (6.5 in)	75 of 100 (Major)
Quakertown	United States	Record daily precipitation	89.4 mm (3.5 in)	67 of 100 (Major)
Scranton	United States	Record daily precipitation	41.9 mm (1.6 in)	51 of 100 (Notable)
Swan River	Canada	Record daily precipitation	26.2 mm (1.0 in)	47 of 100 (Notable)
Norwich	United States	Record daily precipitation	68.6 mm (2.7 in)	46 of 100 (Notable)
Malavalli	India	Record daily precipitation	57.1 mm (2.2 in)	44 of 100 (Notable)
Chamarajnagar	India	Record daily precipitation	55.9 mm (2.2 in)	42 of 100 (Notable)
Cortland	United States	Record daily precipitation	35.3 mm (1.4 in)	37 of 100 (Notable)
Clay	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
Cape Town Fire Station	South Africa	Record daily precipitation	27.0 mm (1.1 in)	36 of 100 (Notable)
Academy 2NE	United States	Record daily precipitation	45.7 mm (1.8 in)	35 of 100 (Notable)
Ubinskoe	Russia	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Blackdown	South Africa	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Middle Dam	United States	Record daily precipitation	39.4 mm (1.6 in)	33 of 100 (Routine)
Fazenda Feijao	Brazil	Record daily precipitation	59.0 mm (2.3 in)	32 of 100 (Routine)
Natham	India	Record daily precipitation	40.0 mm (1.6 in)	32 of 100 (Routine)
Nagamangala	India	Record daily precipitation	50.6 mm (2.0 in)	31 of 100 (Routine)
Knysna (Tnk)	South Africa	Record daily precipitation	30.0 mm (1.2 in)	30 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Weston	United States	Record low maximum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Griffiss AFB	United States	Record low maximum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
San Bernardino F S 226	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Wanakena Rngr School	United States	Record daily precipitation	35.3 mm (1.4 in)	29 of 100 (Routine)
Channapatana	India	Record daily precipitation	46.2 mm (1.8 in)	28 of 100 (Routine)
Vladikavkaz	Russia	Record low minimum temperature	3.9 C (39.0 F)	28 of 100 (Routine)
Bernburg/Saale (Nord)	Germany	Record low minimum temperature	4.9 C (40.8 F)	27 of 100 (Routine)
Laukaha	India	Record daily precipitation	47.0 mm (1.9 in)	27 of 100 (Routine)
Raghopur	India	Record daily precipitation	32.0 mm (1.3 in)	27 of 100 (Routine)
Redwood Falls Muni AP	United States	Record daily precipitation	36.6 mm (1.4 in)	27 of 100 (Routine)
Barguzin	Russia	Record high minimum temperature	11.7 C (53.1 F)	26 of 100 (Routine)
Concordia (Bos)	South Africa	Record daily precipitation	30.0 mm (1.2 in)	26 of 100 (Routine)
Riverside Fire STN 3	United States	Record high minimum temperature	15.6 C (60.1 F)	26 of 100 (Routine)
Nenzel 20 S	United States	Record daily precipitation	28.7 mm (1.1 in)	26 of 100 (Routine)
Smiths Basin	United States	Record daily precipitation	26.4 mm (1.0 in)	26 of 100 (Routine)
Gobichettipalaya	India	Record daily precipitation	29.2 mm (1.1 in)	25 of 100 (Routine)
Uppiliyapuram	India	Record daily precipitation	28.0 mm (1.1 in)	25 of 100 (Routine)
Kerrville	United States	Record high maximum temperature	35.6 C (96.1 F)	25 of 100 (Routine)
Porto	Brazil	Record daily precipitation	62.0 mm (2.4 in)	24 of 100 (Routine)
Acude Sobral	Brazil	Record daily precipitation	37.0 mm (1.5 in)	24 of 100 (Routine)
Coroata	Brazil	Record daily precipitation	28.2 mm (1.1 in)	24 of 100 (Routine)
Ulan-Ude	Russia	Record high maximum temperature	33.3 C (91.9 F)	24 of 100 (Routine)
Avalon Pleasure Pier	United States	Record high maximum temperature	25.0 C (77.0 F)	24 of 100 (Routine)
Lamar	United States	Record daily precipitation	53.6 mm (2.1 in)	24 of 100 (Routine)
Kellogg	United States	Record low minimum temperature	-1.7 C (28.9 F)	24 of 100 (Routine)
Milan 1NW	United States	Record daily precipitation	38.4 mm (1.5 in)	24 of 100 (Routine)
Cooperstown	United States	Record daily precipitation	28.4 mm (1.1 in)	24 of 100 (Routine)
Tupper Lake Sunmount	United States	Record daily precipitation	34.0 mm (1.3 in)	24 of 100 (Routine)
Escalante	United States	Record high minimum temperature	11.7 C (53.1 F)	24 of 100 (Routine)
Gauribidanur	India	Record daily precipitation	28.0 mm (1.1 in)	23 of 100 (Routine)
Mana 1026	United States	Record high maximum temperature	32.2 C (90.0 F)	23 of 100 (Routine)
Coonoor	India	Record daily precipitation	26.0 mm (1.0 in)	22 of 100 (Routine)
Adaven	United States	Record high minimum temperature	11.7 C (53.1 F)	22 of 100 (Routine)
Vivian	United States	Record low minimum temperature	1.1 C (34.0 F)	22 of 100 (Routine)
Alpena 1 NW	United States	Record daily precipitation	26.7 mm (1.1 in)	22 of 100 (Routine)
Parsons 2 NW	United States	Record daily precipitation	41.1 mm (1.6 in)	21 of 100 (Routine)
Parsons 3 SE	United States	Record low maximum temperature	14.4 C (57.9 F)	21 of 100 (Routine)
Shalaurova Mys	Russia	Record daily precipitation	12.1 mm (0.5 in)	20 of 100 (Routine)
Barabinsk	Russia	Record daily precipitation	18.4 mm (0.7 in)	20 of 100 (Routine)
Riversdale	South Africa	Record daily precipitation	21.7 mm (0.9 in)	20 of 100 (Routine)
Campo Largo	Brazil	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)

Counts by Type and Timescale

276 records

Records set or tied on 31 May 1968 by type: Highest daily maximum 27, Lowest daily maximum 20, Highest daily minimum 36, Lowest daily minimum 39, Heaviest daily rainfall 150, Heaviest daily snowfall 2, Deepest snow cover 2.

Records on 31 May 1968 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	20
Highest daily minimum	36
Lowest daily minimum	39
Heaviest daily rainfall	150
Heaviest daily snowfall	2
Deepest snow cover	2

Records on 31 May 1968 by timescale: all-time 1, monthly 12, daily 263.

How Much Records Were Beaten By

229 broken records

Margins by which the 229 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.7. Ties are not counted.

Top 20 by Significance

31 May 1968

Top 20 records on 31 May 1968 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1968	Mullen 3S, US	all-time rain	165.6 mm (6.5 in)	76.7 mm (3.0 in)	27 years	75 of 100 (Major)
31 May 1968	Quakertown, US	daily rain	89.4 mm (3.5 in)	56.1 mm (2.2 in)	64 years	67 of 100 (Major)
31 May 1968	Scranton, US	daily rain	41.9 mm (1.6 in)	28.4 mm (1.1 in)	42 years	51 of 100 (Notable)
31 May 1968	Swan River, CA	daily rain	26.2 mm (1.0 in)	17.1 mm (0.7 in)	52 years	47 of 100 (Notable)
31 May 1968	Norwich, US	daily rain	68.6 mm (2.7 in)	34.1 mm (1.3 in)	57 years	46 of 100 (Notable)
31 May 1968	Malavalli, IN	daily rain	57.1 mm (2.2 in)	33.2 mm (1.3 in)	64 years	44 of 100 (Notable)
31 May 1968	Chamarajnagar, IN	daily rain	55.9 mm (2.2 in)	31.8 mm (1.3 in)	55 years	42 of 100 (Notable)
31 May 1968	Cortland, US	daily rain	35.3 mm (1.4 in)	9.4 mm (0.37 in)	64 years	37 of 100 (Notable)
31 May 1968	Clay, US	daily rain	38.1 mm (1.5 in)	19.8 mm (0.8 in)	28 years	37 of 100 (Notable)
31 May 1968	Cape Town Fire Station, ZA	daily rain	27.0 mm (1.1 in)	6.2 mm (0.24 in)	73 years	36 of 100 (Notable)
31 May 1968	Academy 2NE, US	daily rain	45.7 mm (1.8 in)	21.6 mm (0.9 in)	25 years	35 of 100 (Notable)
31 May 1968	Ubinskoe, RU	monthly rain	26.2 mm (1.0 in)	5.4 mm (0.21 in)	12 years	33 of 100 (Routine)
31 May 1968	Blackdown, ZA	daily rain	33.0 mm (1.3 in)	23.0 mm (0.9 in)	11 years	33 of 100 (Routine)
31 May 1968	Middle Dam, US	daily rain	39.4 mm (1.6 in)	15.5 mm (0.6 in)	33 years	33 of 100 (Routine)
31 May 1968	Fazenda Feijao, BR	daily rain	59.0 mm (2.3 in)	18.5 mm (0.7 in)	37 years	32 of 100 (Routine)
31 May 1968	Natham, IN	daily rain	40.0 mm (1.6 in)	22.2 mm (0.9 in)	43 years	32 of 100 (Routine)
31 May 1968	Nagamangala, IN	daily rain	50.6 mm (2.0 in)	22.2 mm (0.9 in)	38 years	31 of 100 (Routine)
31 May 1968	Knysna (Tnk), ZA	daily rain	30.0 mm (1.2 in)	9.7 mm (0.38 in)	54 years	30 of 100 (Routine)
31 May 1968	Cheyenne Wells 2NE, US	daily high min	17.2 C (63.0 F)	2.8 C (5.0 F)	57 years	30 of 100 (Routine)
31 May 1968	Weston, US	daily low max	17.2 C (63.0 F)	0.6 C (1.1 F)	73 years	30 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

1811 to 1968

Records set or tied on this calendar date in each year from 1811 to 1968. 1968 had 276 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 1968-05-31: 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 10	186
10 to 20	26
20 to 30	10
30 to 40	4
40 to 50	0
50 to 60	2
60 to 70	0
70 to 80	1