Weather Records on 20 May 1940

337 weather records were set or tied worldwide on 20 May 1940. Highest significance: Athipettu, IN.

Key Facts for 20 May 1940

On 20 May 1940, 337 weather records were set or tied at long-record stations worldwide.
73 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 35 monthly and 301 daily.
Athipettu set a monthly record daily precipitation of 193.8 mm (7.6 in) on 20 May 1940.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 456 records.

Record Map

337 stations

337 station records on 20 May 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Athipettu	India	Record daily precipitation	193.8 mm (7.6 in)	63 of 100 (Major)
Sompeta	India	Record daily precipitation	111.3 mm (4.4 in)	58 of 100 (Notable)
Sullurpet	India	Record daily precipitation	205.0 mm (8.1 in)	57 of 100 (Notable)
Krishnapatnam	India	Record daily precipitation	260.9 mm (10.3 in)	57 of 100 (Notable)
Valapady	India	Record daily precipitation	141.0 mm (5.6 in)	56 of 100 (Notable)
Poonch	India	Record daily precipitation	94.5 mm (3.7 in)	53 of 100 (Notable)
Rapur	India	Record daily precipitation	122.4 mm (4.8 in)	51 of 100 (Notable)
Badvel	India	Record daily precipitation	59.2 mm (2.3 in)	50 of 100 (Notable)
Rajampet	India	Record daily precipitation	86.1 mm (3.4 in)	49 of 100 (Notable)
Rambha	India	Record daily precipitation	104.6 mm (4.1 in)	49 of 100 (Notable)
Chingleput	India	Record daily precipitation	120.1 mm (4.7 in)	49 of 100 (Notable)
Derry 4 SW	United States	Record daily precipitation	37.8 mm (1.5 in)	49 of 100 (Notable)
Anakapalli	India	Record daily precipitation	69.6 mm (2.7 in)	48 of 100 (Notable)
Salur	India	Record daily precipitation	76.2 mm (3.0 in)	47 of 100 (Notable)
Srungavarapukota	India	Record daily precipitation	80.8 mm (3.2 in)	47 of 100 (Notable)
Sidhout(Siddavat)	India	Record daily precipitation	89.9 mm (3.5 in)	46 of 100 (Notable)
Chidavaram	India	Record daily precipitation	82.6 mm (3.3 in)	46 of 100 (Notable)
Ennore Obsy	India	Record daily precipitation	71.4 mm (2.8 in)	46 of 100 (Notable)
Jammalamadugu	India	Record daily precipitation	66.0 mm (2.6 in)	45 of 100 (Notable)
Vishakhapatnam	India	Record daily precipitation	111.8 mm (4.4 in)	45 of 100 (Notable)
Malakapuram	India	Record daily precipitation	96.5 mm (3.8 in)	45 of 100 (Notable)
Gudur	India	Record daily precipitation	218.4 mm (8.6 in)	44 of 100 (Notable)
Tiruvallur	India	Record daily precipitation	91.4 mm (3.6 in)	44 of 100 (Notable)
Madras/Minambakkam	India	Record daily precipitation	118.4 mm (4.7 in)	44 of 100 (Notable)
Omalur	India	Record daily precipitation	87.9 mm (3.5 in)	44 of 100 (Notable)
Kamalapuram	India	Record daily precipitation	51.1 mm (2.0 in)	43 of 100 (Notable)
Pundi	India	Record daily precipitation	78.7 mm (3.1 in)	43 of 100 (Notable)
Jalpaiguri	India	Record daily precipitation	132.3 mm (5.2 in)	43 of 100 (Notable)
Razole(Rajole)	India	Record daily precipitation	96.5 mm (3.8 in)	42 of 100 (Notable)
Berhampur	India	Record daily precipitation	102.9 mm (4.1 in)	42 of 100 (Notable)
Amalapuram	India	Record daily precipitation	109.2 mm (4.3 in)	41 of 100 (Notable)
Narsapur	India	Record daily precipitation	63.5 mm (2.5 in)	41 of 100 (Notable)
Kavali	India	Record daily precipitation	113.0 mm (4.4 in)	41 of 100 (Notable)
Bhadrachalam	India	Record daily precipitation	97.0 mm (3.8 in)	40 of 100 (Notable)
Mahabalipuram Obsy	India	Record daily precipitation	82.6 mm (3.3 in)	40 of 100 (Notable)
Yercaud	India	Record daily precipitation	96.5 mm (3.8 in)	40 of 100 (Notable)
Alamur(Alamar)	India	Record daily precipitation	135.9 mm (5.4 in)	39 of 100 (Notable)
Madurantakam	India	Record daily precipitation	114.3 mm (4.5 in)	39 of 100 (Notable)
Cuddapah	India	Record daily precipitation	115.1 mm (4.5 in)	38 of 100 (Notable)
Chitvel	India	Record daily precipitation	97.8 mm (3.9 in)	37 of 100 (Notable)
Bhimavaram	India	Record daily precipitation	43.2 mm (1.7 in)	37 of 100 (Notable)
Ponneri	India	Record daily precipitation	118.6 mm (4.7 in)	37 of 100 (Notable)
Tekkali	India	Record daily precipitation	56.1 mm (2.2 in)	36 of 100 (Notable)
Yellamanchili	India	Record daily precipitation	58.9 mm (2.3 in)	36 of 100 (Notable)
Banpur	India	Record daily precipitation	100.3 mm (3.9 in)	36 of 100 (Notable)
Azimganj	India	Record daily precipitation	79.5 mm (3.1 in)	36 of 100 (Notable)
Ironwood	United States	Record daily precipitation	34.3 mm (1.4 in)	36 of 100 (Notable)
Bobbili	India	Record daily precipitation	77.2 mm (3.0 in)	35 of 100 (Notable)
Gopalpur	India	Record daily precipitation	126.5 mm (5.0 in)	35 of 100 (Notable)
Covelong	India	Record daily precipitation	93.0 mm (3.7 in)	35 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low maximum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Mummidivaram	India	Record daily precipitation	88.1 mm (3.5 in)	34 of 100 (Routine)
Koilkuntla	India	Record daily precipitation	54.6 mm (2.1 in)	34 of 100 (Routine)
Ramban	India	Record daily precipitation	49.5 mm (1.9 in)	34 of 100 (Routine)
Mundargi	India	Record daily precipitation	41.1 mm (1.6 in)	34 of 100 (Routine)
Woodstock	United States	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)
Puttur	India	Record daily precipitation	66.8 mm (2.6 in)	33 of 100 (Routine)
Isakapally	India	Record daily precipitation	108.0 mm (4.3 in)	33 of 100 (Routine)
Purushottampur	India	Record daily precipitation	77.5 mm (3.1 in)	33 of 100 (Routine)
Caguas	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

337 records

Records set or tied on 20 May 1940 by type: Highest daily maximum 34, Lowest daily maximum 21, Highest daily minimum 39, Lowest daily minimum 13, Heaviest daily rainfall 230.

Records on 20 May 1940 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	21
Highest daily minimum	39
Lowest daily minimum	13
Heaviest daily rainfall	230
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 May 1940 by timescale: all-time 1, monthly 35, daily 301.

How Much Records Were Beaten By

291 broken records

Margins by which the 291 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 148.6. Ties are not counted.

Top 20 by Significance

20 May 1940

Top 20 records on 20 May 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1940	Athipettu, IN	monthly rain	193.8 mm (7.6 in)	97.8 mm (3.9 in)	31 years	63 of 100 (Major)
20 May 1940	Sompeta, IN	monthly rain	111.3 mm (4.4 in)	47.8 mm (1.9 in)	39 years	58 of 100 (Notable)
20 May 1940	Sullurpet, IN	monthly rain	205.0 mm (8.1 in)	100.9 mm (4.0 in)	10 years	57 of 100 (Notable)
20 May 1940	Krishnapatnam, IN	monthly rain	260.9 mm (10.3 in)	148.6 mm (5.9 in)	10 years	57 of 100 (Notable)
20 May 1940	Valapady, IN	monthly rain	141.0 mm (5.6 in)	53.9 mm (2.1 in)	10 years	56 of 100 (Notable)
20 May 1940	Poonch, IN	daily rain	94.5 mm (3.7 in)	78.5 mm (3.1 in)	31 years	53 of 100 (Notable)
20 May 1940	Rapur, IN	daily rain	122.4 mm (4.8 in)	101.6 mm (4.0 in)	37 years	51 of 100 (Notable)
20 May 1940	Badvel, IN	daily rain	59.2 mm (2.3 in)	47.5 mm (1.9 in)	37 years	50 of 100 (Notable)
20 May 1940	Rajampet, IN	daily rain	86.1 mm (3.4 in)	68.3 mm (2.7 in)	23 years	49 of 100 (Notable)
20 May 1940	Rambha, IN	daily rain	104.6 mm (4.1 in)	94.9 mm (3.7 in)	17 years	49 of 100 (Notable)
20 May 1940	Chingleput, IN	monthly rain	120.1 mm (4.7 in)	46.4 mm (1.8 in)	31 years	49 of 100 (Notable)
20 May 1940	Derry 4 SW, US	daily rain	37.8 mm (1.5 in)	27.4 mm (1.1 in)	41 years	49 of 100 (Notable)
20 May 1940	Anakapalli, IN	daily rain	69.6 mm (2.7 in)	58.7 mm (2.3 in)	27 years	48 of 100 (Notable)
20 May 1940	Salur, IN	daily rain	76.2 mm (3.0 in)	59.7 mm (2.4 in)	12 years	47 of 100 (Notable)
20 May 1940	Srungavarapukota, IN	daily rain	80.8 mm (3.2 in)	68.1 mm (2.7 in)	37 years	47 of 100 (Notable)
20 May 1940	Sidhout(Siddavat), IN	daily rain	89.9 mm (3.5 in)	64.5 mm (2.5 in)	7 years	46 of 100 (Notable)
20 May 1940	Chidavaram, IN	daily rain	82.6 mm (3.3 in)	58.2 mm (2.3 in)	11 years	46 of 100 (Notable)
20 May 1940	Ennore Obsy, IN	daily rain	71.4 mm (2.8 in)	52.3 mm (2.1 in)	37 years	46 of 100 (Notable)
20 May 1940	Jammalamadugu, IN	daily rain	66.0 mm (2.6 in)	58.4 mm (2.3 in)	4 years	45 of 100 (Notable)
20 May 1940	Vishakhapatnam, IN	daily rain	111.8 mm (4.4 in)	109.0 mm (4.3 in)	4 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

1802 to 1940

Records set or tied on this calendar date in each year from 1802 to 1940. 1940 had 337 records.

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

Records on 05-20 in each year
Year	Records
1802	1
1803	1
1804	1
1815	1
1825	1
1837	1
1844	1
1845	3
1847	1
1854	1
1858	3
1861	1
1862	1
1865	1
1867	1
1868	2
1870	3
1871	2
1876	2
1877	3
1879	1
1880	2
1884	2
1885	1
1887	2
1889	3
1890	3
1891	5
1892	3
1893	1
1894	6
1895	3
1896	3
1897	3
1898	4
1899	4
1900	1
1901	5
1902	11
1903	19
1904	4
1905	4
1906	22
1907	35
1908	23
1909	10
1910	20
1911	82
1912	20
1913	10
1914	16
1915	42
1916	29
1917	46
1918	92
1919	56
1920	44
1921	234
1922	40
1923	125
1924	189
1925	251
1926	128
1927	118
1928	138
1929	323
1930	129
1931	451
1932	689
1933	449
1934	582
1935	259
1936	207
1937	270
1938	331
1939	266
1940	337
1941	378
1942	337
1943	802
1944	315
1945	498
1946	339
1947	358
1948	514
1949	586
1950	327
1951	288
1952	615
1953	518
1954	822
1955	421
1956	565
1957	728
1958	378
1959	785
1960	612
1961	333
1962	773
1963	732
1964	517
1965	200
1966	416
1967	587
1968	743
1969	885
1970	310
1971	653
1972	612
1973	419
1974	893
1975	1,332
1976	837
1977	553
1978	534
1979	683
1980	751
1981	1,540
1982	554
1983	1,307
1984	867
1985	426
1986	790
1987	1,036
1988	805
1989	764
1990	722
1991	925
1992	1,200
1993	1,208
1994	778
1995	734
1996	1,749
1997	1,106
1998	1,124
1999	673
2000	991
2001	847
2002	2,299
2003	1,201
2004	746
2005	929
2006	1,006
2007	565
2008	999
2009	1,529
2010	1,011
2011	1,117
2012	604
2013	919
2014	629
2015	1,001
2016	692
2017	1,214
2018	460
2019	1,483
2020	784
2021	904
2022	1,643
2023	1,106
2024	478
2025	969
2026	696

Download the Data

Data for records on 1940-05-20: 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 20	205
20 to 40	43
40 to 60	25
60 to 80	12
80 to 100	2
100 to 120	3
120 to 140	0
140 to 160	1