Weather Records on 21 July 1940

318 weather records were set or tied worldwide on 21 July 1940. Highest significance: Siliguri, IN.

Key Facts for 21 July 1940

On 21 July 1940, 318 weather records were set or tied at long-record stations worldwide.
161 were record highs and 32 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 1 monthly and 314 daily.
Siliguri set a daily record precipitation of 230.9 mm (9.1 in) on 21 July 1940.
Across 159 earlier years (1794 to 2026) the same calendar date averaged 468 records.

Record Map

318 stations

318 station records on 21 July 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 July 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Siliguri	India	Record daily precipitation	230.9 mm (9.1 in)	55 of 100 (Notable)
Dalu	India	Record daily precipitation	186.9 mm (7.4 in)	51 of 100 (Notable)
Jalpaiguri	India	Record daily precipitation	231.4 mm (9.1 in)	50 of 100 (Notable)
Bettiah	India	Record daily precipitation	163.8 mm (6.4 in)	49 of 100 (Notable)
Barharwa	India	Record daily precipitation	177.8 mm (7.0 in)	48 of 100 (Notable)
Loukahi	India	Record daily precipitation	213.9 mm (8.4 in)	47 of 100 (Notable)
Tanjavur	India	Record daily precipitation	64.0 mm (2.5 in)	47 of 100 (Notable)
Kishanganj	India	Record daily precipitation	174.0 mm (6.9 in)	46 of 100 (Notable)
Boolathana	Australia	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Padrauna	India	Record daily precipitation	191.8 mm (7.6 in)	44 of 100 (Notable)
Madhepur	India	Record daily precipitation	190.5 mm (7.5 in)	43 of 100 (Notable)
Ramnagar Sr	India	Record daily precipitation	156.5 mm (6.2 in)	41 of 100 (Notable)
Ardmore	United States	Record daily precipitation	73.7 mm (2.9 in)	40 of 100 (Notable)
Naples 1 SW	United States	Record daily precipitation	87.1 mm (3.4 in)	39 of 100 (Notable)
Supaul	India	Record daily precipitation	127.5 mm (5.0 in)	37 of 100 (Notable)
Prescott 2 NNW	United States	Record daily precipitation	61.0 mm (2.4 in)	37 of 100 (Notable)
Sheohar	India	Record daily precipitation	138.4 mm (5.4 in)	35 of 100 (Notable)
Khutauna	India	Record daily precipitation	153.7 mm (6.1 in)	34 of 100 (Routine)
Lancaster 2 NE Pump St	United States	Record high minimum temperature	27.8 C (82.0 F)	34 of 100 (Routine)
Maharajganj	India	Record daily precipitation	181.6 mm (7.1 in)	33 of 100 (Routine)
Minden	United States	Record high minimum temperature	30.6 C (87.1 F)	32 of 100 (Routine)
Bagaha	India	Record daily precipitation	198.1 mm (7.8 in)	31 of 100 (Routine)
Dhanaha	India	Record daily precipitation	249.7 mm (9.8 in)	31 of 100 (Routine)
Webbers Falls 5 WSW	United States	Record daily precipitation	60.2 mm (2.4 in)	31 of 100 (Routine)
Tada	India	Record daily precipitation	56.9 mm (2.2 in)	30 of 100 (Routine)
Namakkal	India	Record daily precipitation	41.4 mm (1.6 in)	30 of 100 (Routine)
Hot Springs 1 NNE	United States	Record daily precipitation	36.1 mm (1.4 in)	30 of 100 (Routine)
Doniphan	United States	Record daily precipitation	49.5 mm (1.9 in)	30 of 100 (Routine)
Kachugaon	India	Record daily precipitation	153.7 mm (6.1 in)	29 of 100 (Routine)
Drevja	Norway	Record daily precipitation	34.5 mm (1.4 in)	29 of 100 (Routine)
Maunawili Rch	United States	Record high minimum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Rapur	India	Record daily precipitation	45.7 mm (1.8 in)	28 of 100 (Routine)
Atmakur	India	Record daily precipitation	33.8 mm (1.3 in)	28 of 100 (Routine)
Washington	United States	Record high minimum temperature	25.0 C (77.0 F)	28 of 100 (Routine)
Kampur	India	Record daily precipitation	61.0 mm (2.4 in)	27 of 100 (Routine)
Mehgawan	India	Record daily precipitation	74.9 mm (2.9 in)	27 of 100 (Routine)
Ft Scott	United States	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Wamego 4 W	United States	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Okmulgee Wtr Wks	United States	Record daily precipitation	40.9 mm (1.6 in)	26 of 100 (Routine)
Motihari	India	Record daily precipitation	131.1 mm (5.2 in)	24 of 100 (Routine)
Kapskarmo	Norway	Record daily precipitation	35.2 mm (1.4 in)	24 of 100 (Routine)
Srikakulam	India	Record daily precipitation	46.0 mm (1.8 in)	23 of 100 (Routine)
Mawphlang Obsy	India	Record daily precipitation	154.9 mm (6.1 in)	23 of 100 (Routine)
Chitvel	India	Record daily precipitation	56.4 mm (2.2 in)	22 of 100 (Routine)
Bajramaly	Turkmenistan	Record high minimum temperature	27.6 C (81.7 F)	22 of 100 (Routine)
Wilmington Wb City	United States	Record high maximum temperature	36.7 C (98.1 F)	22 of 100 (Routine)
Rugby	United States	Record daily precipitation	52.1 mm (2.1 in)	22 of 100 (Routine)
Brockville	Canada	Record high minimum temperature	24.4 C (75.9 F)	21 of 100 (Routine)
Deoria	India	Record daily precipitation	93.7 mm (3.7 in)	21 of 100 (Routine)
Mayaguez City	Puerto Rico [United States]	Record low maximum temperature	30.0 C (86.0 F)	21 of 100 (Routine)
Lamar	United States	Record daily precipitation	31.5 mm (1.2 in)	21 of 100 (Routine)
Mayville	United States	Record high maximum temperature	38.3 C (100.9 F)	21 of 100 (Routine)
Centralia	United States	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Ottapidaram	India	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)
Sulitjelma	Norway	Record daily precipitation	16.7 mm (0.7 in)	20 of 100 (Routine)
Trinidad 2 SSE	United States	Record daily precipitation	8.4 mm (0.33 in)	20 of 100 (Routine)
Salem AP (McNary Field)	United States	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Namdalseid	Norway	Record daily precipitation	19.0 mm (0.7 in)	20 of 100 (Routine)
Kurgan	Russia	Record daily precipitation	11.5 mm (0.5 in)	20 of 100 (Routine)
Margaret River 1	Australia	Record daily precipitation	44.7 mm (1.8 in)	20 of 100 (Routine)

Counts by Type and Timescale

318 records

Records set or tied on 21 July 1940 by type: Highest daily maximum 50, Lowest daily maximum 12, Highest daily minimum 111, Lowest daily minimum 20, Heaviest daily rainfall 125.

Records on 21 July 1940 by type
Record type	Records
Highest daily maximum	50
Lowest daily maximum	12
Highest daily minimum	111
Lowest daily minimum	20
Heaviest daily rainfall	125
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 July 1940 by timescale: all-time 3, monthly 1, daily 314.

How Much Records Were Beaten By

228 broken records

Margins by which the 228 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 174.5. Ties are not counted.

Top 20 by Significance

21 July 1940

Top 20 records on 21 July 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 July 1940	Siliguri, IN	daily rain	230.9 mm (9.1 in)	143.8 mm (5.7 in)	39 years	55 of 100 (Notable)
21 July 1940	Dalu, IN	daily rain	186.9 mm (7.4 in)	122.9 mm (4.8 in)	29 years	51 of 100 (Notable)
21 July 1940	Jalpaiguri, IN	daily rain	231.4 mm (9.1 in)	147.3 mm (5.8 in)	29 years	50 of 100 (Notable)
21 July 1940	Bettiah, IN	daily rain	163.8 mm (6.4 in)	112.2 mm (4.4 in)	19 years	49 of 100 (Notable)
21 July 1940	Barharwa, IN	daily rain	177.8 mm (7.0 in)	121.9 mm (4.8 in)	16 years	48 of 100 (Notable)
21 July 1940	Loukahi, IN	daily rain	213.9 mm (8.4 in)	174.5 mm (6.9 in)	16 years	47 of 100 (Notable)
21 July 1940	Tanjavur, IN	daily rain	64.0 mm (2.5 in)	54.9 mm (2.2 in)	38 years	47 of 100 (Notable)
21 July 1940	Kishanganj, IN	daily rain	174.0 mm (6.9 in)	118.1 mm (4.6 in)	33 years	46 of 100 (Notable)
21 July 1940	Boolathana, AU	daily rain	45.0 mm (1.8 in)	26.5 mm (1.0 in)	26 years	45 of 100 (Notable)
21 July 1940	Padrauna, IN	daily rain	191.8 mm (7.6 in)	130.8 mm (5.1 in)	1 year	44 of 100 (Notable)
21 July 1940	Madhepur, IN	daily rain	190.5 mm (7.5 in)	152.4 mm (6.0 in)	1 year	43 of 100 (Notable)
21 July 1940	Ramnagar Sr, IN	daily rain	156.5 mm (6.2 in)	101.9 mm (4.0 in)	27 years	41 of 100 (Notable)
21 July 1940	Ardmore, US	daily rain	73.7 mm (2.9 in)	52.9 mm (2.1 in)	35 years	40 of 100 (Notable)
21 July 1940	Naples 1 SW, US	daily rain	87.1 mm (3.4 in)	60.4 mm (2.4 in)	18 years	39 of 100 (Notable)
21 July 1940	Supaul, IN	daily rain	127.5 mm (5.0 in)	76.7 mm (3.0 in)	16 years	37 of 100 (Notable)
21 July 1940	Prescott 2 NNW, US	daily rain	61.0 mm (2.4 in)	33.1 mm (1.3 in)	48 years	37 of 100 (Notable)
21 July 1940	Sheohar, IN	daily rain	138.4 mm (5.4 in)	59.7 mm (2.4 in)	31 years	35 of 100 (Notable)
21 July 1940	Khutauna, IN	daily rain	153.7 mm (6.1 in)	93.0 mm (3.7 in)	1 year	34 of 100 (Routine)
21 July 1940	Lancaster 2 NE Pump St, US	all-time high min	27.8 C (82.0 F)	1.1 C (2.0 F)	24 years	34 of 100 (Routine)
21 July 1940	Maharajganj, IN	daily rain	181.6 mm (7.1 in)	59.4 mm (2.3 in)	39 years	33 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

1794 to 1940

Records set or tied on this calendar date in each year from 1794 to 1940. 1940 had 318 records.

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

Records on 07-21 in each year
Year	Records
1794	1
1795	1
1796	1
1797	1
1813	2
1832	2
1837	1
1839	1
1843	1
1844	2
1854	1
1859	3
1865	3
1868	3
1872	1
1876	1
1879	2
1880	1
1881	1
1884	1
1885	1
1886	2
1888	2
1889	3
1890	2
1892	3
1893	3
1894	3
1895	1
1896	3
1897	4
1898	7
1899	2
1900	6
1901	13
1902	12
1903	10
1904	8
1905	13
1906	13
1907	12
1908	25
1909	18
1910	12
1911	37
1912	52
1913	41
1914	48
1915	81
1916	72
1917	136
1918	130
1919	51
1920	33
1921	55
1922	48
1923	132
1924	286
1925	202
1926	401
1927	191
1928	205
1929	360
1930	521
1931	549
1932	322
1933	208
1934	965
1935	236
1936	322
1937	253
1938	638
1939	415
1940	318
1941	226
1942	318
1943	253
1944	716
1945	300
1946	398
1947	795
1948	403
1949	603
1950	662
1951	427
1952	657
1953	351
1954	656
1955	582
1956	490
1957	447
1958	531
1959	940
1960	651
1961	388
1962	263
1963	470
1964	457
1965	748
1966	626
1967	313
1968	334
1969	636
1970	1,241
1971	475
1972	1,046
1973	871
1974	536
1975	380
1976	477
1977	708
1978	1,155
1979	964
1980	926
1981	1,352
1982	588
1983	1,234
1984	764
1985	554
1986	791
1987	1,025
1988	1,015
1989	973
1990	914
1991	812
1992	1,562
1993	866
1994	773
1995	1,247
1996	1,141
1997	849
1998	1,674
1999	814
2000	1,230
2001	889
2002	990
2003	1,250
2004	694
2005	1,420
2006	1,479
2007	1,145
2008	989
2009	1,306
2010	1,148
2011	1,414
2012	815
2013	526
2014	762
2015	704
2016	645
2017	433
2018	942
2019	755
2020	363
2021	574
2022	866
2023	816
2024	873
2025	881
2026	874

Download the Data

Data for records on 1940-07-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 25	195
25 to 50	14
50 to 75	7
75 to 100	2
100 to 125	5
125 to 150	3
150 to 175	2