Weather Records on 31 May 1940

383 weather records were set or tied worldwide on 31 May 1940. Highest significance: Munchen-Nymphenburg, DE.

Key Facts for 31 May 1940

On 31 May 1940, 383 weather records were set or tied at long-record stations worldwide.
97 were record highs and 53 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 16 monthly and 366 daily.
Munchen-Nymphenburg set an all-time record daily precipitation of 155.2 mm (6.1 in) on 31 May 1940.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 438 records.

Record Map

383 stations

383 station records on 31 May 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Munchen-Nymphenburg	Germany	Record daily precipitation	155.2 mm (6.1 in)	78 of 100 (Major)
World Trade Ctr	United States	Record daily precipitation	76.2 mm (3.0 in)	65 of 100 (Major)
Ny City Cntrl Park	United States	Record daily precipitation	79.5 mm (3.1 in)	65 of 100 (Major)
Concord	United States	Record daily precipitation	62.5 mm (2.5 in)	60 of 100 (Major)
Bridgeport	United States	Record daily precipitation	60.5 mm (2.4 in)	55 of 100 (Notable)
Jhansi	India	Record daily precipitation	29.0 mm (1.1 in)	53 of 100 (Notable)
Schenley Lock 5	United States	Record daily precipitation	45.7 mm (1.8 in)	53 of 100 (Notable)
Paterson	United States	Record daily precipitation	57.4 mm (2.3 in)	52 of 100 (Notable)
Scarsdale	United States	Record daily precipitation	66.3 mm (2.6 in)	51 of 100 (Notable)
Coraopolis Neville Is	United States	Record daily precipitation	44.5 mm (1.8 in)	51 of 100 (Notable)
Innsbruck	Austria	Record daily precipitation	61.4 mm (2.4 in)	48 of 100 (Notable)
Plainfield	United States	Record daily precipitation	68.1 mm (2.7 in)	48 of 100 (Notable)
Indian Mills 2 W	United States	Record daily precipitation	48.5 mm (1.9 in)	47 of 100 (Notable)
Freehold-Marlboro	United States	Record daily precipitation	63.2 mm (2.5 in)	46 of 100 (Notable)
Sedro-Woolley	United States	Record daily precipitation	38.1 mm (1.5 in)	46 of 100 (Notable)
Beaver Falls 1 NE	United States	Record daily precipitation	48.0 mm (1.9 in)	45 of 100 (Notable)
Long Branch-Oakhurst	United States	Record daily precipitation	49.8 mm (2.0 in)	44 of 100 (Notable)
Acmetonia Lock 3	United States	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Irwin	United States	Record daily precipitation	33.5 mm (1.3 in)	44 of 100 (Notable)
Fall River	United States	Record daily precipitation	52.3 mm (2.1 in)	42 of 100 (Notable)
West Newton	United States	Record daily precipitation	43.7 mm (1.7 in)	42 of 100 (Notable)
Rowlesburg 1	United States	Record daily precipitation	52.3 mm (2.1 in)	42 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	47.5 mm (1.9 in)	41 of 100 (Notable)
Kota-In-Rajasthan	India	Record daily precipitation	25.7 mm (1.0 in)	39 of 100 (Notable)
Surgut	Russia	Record daily precipitation	26.1 mm (1.0 in)	39 of 100 (Notable)
Portland	United States	Record daily precipitation	59.4 mm (2.3 in)	39 of 100 (Notable)
Jersey City	United States	Record daily precipitation	57.9 mm (2.3 in)	39 of 100 (Notable)
Storrs	United States	Record daily precipitation	125.0 mm (4.9 in)	38 of 100 (Notable)
Winchendon	United States	Record daily precipitation	64.0 mm (2.5 in)	38 of 100 (Notable)
Pleasantville 1 N	United States	Record daily precipitation	48.5 mm (1.9 in)	38 of 100 (Notable)
Greensburg 3 SE Unity	United States	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
Saltsburg	United States	Record daily precipitation	42.2 mm (1.7 in)	38 of 100 (Notable)
Norwalk	United States	Record daily precipitation	58.7 mm (2.3 in)	37 of 100 (Notable)
Milford 2 SE	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
Lake Cochituate	United States	Record daily precipitation	42.9 mm (1.7 in)	37 of 100 (Notable)
Middleboro	United States	Record daily precipitation	45.7 mm (1.8 in)	37 of 100 (Notable)
Franklin	United States	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Greensburg 2 S	United States	Record daily precipitation	30.0 mm (1.2 in)	37 of 100 (Notable)
Coupeville 1 S	United States	Record daily precipitation	26.2 mm (1.0 in)	37 of 100 (Notable)
Waterbury	United States	Record daily precipitation	51.1 mm (2.0 in)	36 of 100 (Notable)
Millington 1 SE	United States	Record daily precipitation	33.8 mm (1.3 in)	36 of 100 (Notable)
New Westminster	Canada	Record daily precipitation	41.9 mm (1.6 in)	35 of 100 (Notable)
Wappingers Falls	United States	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Williamstown	United States	Record daily precipitation	28.4 mm (1.1 in)	34 of 100 (Routine)
Newell	United States	Record daily precipitation	36.8 mm (1.4 in)	34 of 100 (Routine)
Grafton 1 NE	United States	Record daily precipitation	39.4 mm (1.6 in)	34 of 100 (Routine)
Shahabad	India	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Colchester 2 W	United States	Record daily precipitation	98.8 mm (3.9 in)	33 of 100 (Routine)
Worcester	United States	Record daily precipitation	55.1 mm (2.2 in)	33 of 100 (Routine)
Charlotteburg Rsvr	United States	Record daily precipitation	45.7 mm (1.8 in)	33 of 100 (Routine)
Greenville 2 NE	United States	Record daily precipitation	32.5 mm (1.3 in)	33 of 100 (Routine)
Lycippus 1 E	United States	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Kingston	United States	Record daily precipitation	46.7 mm (1.8 in)	33 of 100 (Routine)
Buchanan	United States	Record daily precipitation	47.0 mm (1.9 in)	33 of 100 (Routine)
Russelkonda	India	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Lake Konomoc	United States	Record daily precipitation	73.2 mm (2.9 in)	32 of 100 (Routine)
Spot Pond	United States	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Glenville	United States	Record daily precipitation	37.8 mm (1.5 in)	32 of 100 (Routine)
Sausar	India	Record daily precipitation	25.7 mm (1.0 in)	31 of 100 (Routine)
Aska	India	Record daily precipitation	58.4 mm (2.3 in)	31 of 100 (Routine)

Counts by Type and Timescale

383 records

Records set or tied on 31 May 1940 by type: Highest daily maximum 64, Lowest daily maximum 43, Highest daily minimum 33, Lowest daily minimum 10, Heaviest daily rainfall 233.

Records on 31 May 1940 by type
Record type	Records
Highest daily maximum	64
Lowest daily maximum	43
Highest daily minimum	33
Lowest daily minimum	10
Heaviest daily rainfall	233
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 May 1940 by timescale: all-time 1, monthly 16, daily 366.

How Much Records Were Beaten By

329 broken records

Margins by which the 329 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.1. Ties are not counted.

Top 20 by Significance

31 May 1940

Top 20 records on 31 May 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1940	Munchen-Nymphenburg, DE	all-time rain	155.2 mm (6.1 in)	43.7 mm (1.7 in)	40 years	78 of 100 (Major)
31 May 1940	World Trade Ctr, US	daily rain	76.2 mm (3.0 in)	40.6 mm (1.6 in)	61 years	65 of 100 (Major)
31 May 1940	Ny City Cntrl Park, US	daily rain	79.5 mm (3.1 in)	49.3 mm (1.9 in)	61 years	65 of 100 (Major)
31 May 1940	Concord, US	daily rain	62.5 mm (2.5 in)	40.9 mm (1.6 in)	43 years	60 of 100 (Major)
31 May 1940	Bridgeport, US	daily rain	60.5 mm (2.4 in)	40.9 mm (1.6 in)	42 years	55 of 100 (Notable)
31 May 1940	Jhansi, IN	daily rain	29.0 mm (1.1 in)	28.2 mm (1.1 in)	31 years	53 of 100 (Notable)
31 May 1940	Schenley Lock 5, US	daily rain	45.7 mm (1.8 in)	30.5 mm (1.2 in)	36 years	53 of 100 (Notable)
31 May 1940	Paterson, US	daily rain	57.4 mm (2.3 in)	41.9 mm (1.6 in)	43 years	52 of 100 (Notable)
31 May 1940	Scarsdale, US	daily rain	66.3 mm (2.6 in)	51.1 mm (2.0 in)	29 years	51 of 100 (Notable)
31 May 1940	Coraopolis Neville Is, US	daily rain	44.5 mm (1.8 in)	36.6 mm (1.4 in)	27 years	51 of 100 (Notable)
31 May 1940	Innsbruck, AT	daily rain	61.4 mm (2.4 in)	45.0 mm (1.8 in)	14 years	48 of 100 (Notable)
31 May 1940	Plainfield, US	daily rain	68.1 mm (2.7 in)	41.7 mm (1.6 in)	29 years	48 of 100 (Notable)
31 May 1940	Indian Mills 2 W, US	daily rain	48.5 mm (1.9 in)	38.3 mm (1.5 in)	22 years	47 of 100 (Notable)
31 May 1940	Freehold-Marlboro, US	daily rain	63.2 mm (2.5 in)	26.1 mm (1.0 in)	61 years	46 of 100 (Notable)
31 May 1940	Sedro-Woolley, US	daily rain	38.1 mm (1.5 in)	29.2 mm (1.1 in)	11 years	46 of 100 (Notable)
31 May 1940	Beaver Falls 1 NE, US	daily rain	48.0 mm (1.9 in)	36.6 mm (1.4 in)	9 years	45 of 100 (Notable)
31 May 1940	Long Branch-Oakhurst, US	daily rain	49.8 mm (2.0 in)	40.7 mm (1.6 in)	9 years	44 of 100 (Notable)
31 May 1940	Acmetonia Lock 3, US	daily rain	41.9 mm (1.6 in)	29.2 mm (1.1 in)	9 years	44 of 100 (Notable)
31 May 1940	Irwin, US	daily rain	33.5 mm (1.3 in)	21.6 mm (0.9 in)	32 years	44 of 100 (Notable)
31 May 1940	Fall River, US	daily rain	52.3 mm (2.1 in)	25.6 mm (1.0 in)	45 years	42 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 1940

Records set or tied on this calendar date in each year from 1811 to 1940. 1940 had 383 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 1940-05-31: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	218
10 to 20	55
20 to 30	37
30 to 40	9
40 to 50	9
50 to 60	1