Weather Records on 20 July 1940

325 weather records were set or tied worldwide on 20 July 1940. Highest significance: Tufanganj, IN.

Key Facts for 20 July 1940

On 20 July 1940, 325 weather records were set or tied at long-record stations worldwide.
157 were record highs and 55 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 5 monthly and 316 daily.
Tufanganj set a daily record precipitation of 259.6 mm (10.2 in) on 20 July 1940.
Across 161 earlier years (1809 to 2026) the same calendar date averaged 460 records.

Record Map

325 stations

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

Weather records on 20 July 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tufanganj	India	Record daily precipitation	259.6 mm (10.2 in)	52 of 100 (Notable)
Conway	United States	Record daily precipitation	97.5 mm (3.8 in)	48 of 100 (Notable)
Bend	United States	Record daily precipitation	29.2 mm (1.1 in)	48 of 100 (Notable)
Mekliganj	India	Record daily precipitation	207.0 mm (8.1 in)	41 of 100 (Notable)
Alipurduar	India	Record daily precipitation	268.7 mm (10.6 in)	39 of 100 (Notable)
Prentice #2	United States	Record daily precipitation	45.7 mm (1.8 in)	38 of 100 (Notable)
Big St Germain Dam	United States	Record daily precipitation	58.4 mm (2.3 in)	37 of 100 (Notable)
San Jon	United States	Record high minimum temperature	27.8 C (82.0 F)	36 of 100 (Notable)
Kachugaon	India	Record daily precipitation	317.5 mm (12.5 in)	35 of 100 (Notable)
Forbesganj	India	Record daily precipitation	160.0 mm (6.3 in)	34 of 100 (Routine)
Mathabhanga	India	Record daily precipitation	205.7 mm (8.1 in)	33 of 100 (Routine)
Gann Valley 4NW	United States	Record high minimum temperature	27.8 C (82.0 F)	32 of 100 (Routine)
Astana	Kazakhstan	Record high minimum temperature	23.1 C (73.6 F)	31 of 100 (Routine)
Macon 2 NE	United States	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Clarksville 2NE	United States	Record daily precipitation	62.2 mm (2.4 in)	31 of 100 (Routine)
Hedrum	Norway	Record daily precipitation	48.7 mm (1.9 in)	30 of 100 (Routine)
Ashland	United States	Record low maximum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
Ilulissat (Jakobshavn)	Greenland [Denmark]	Record high minimum temperature	8.9 C (48.0 F)	29 of 100 (Routine)
Tiruppathur	India	Record daily precipitation	38.1 mm (1.5 in)	29 of 100 (Routine)
Burlington	United States	Record daily precipitation	49.3 mm (1.9 in)	29 of 100 (Routine)
Phelps	United States	Record daily precipitation	40.1 mm (1.6 in)	28 of 100 (Routine)
Ottawa Cda	Canada	Record daily precipitation	26.2 mm (1.0 in)	27 of 100 (Routine)
Two Harbors	United States	Record daily precipitation	50.8 mm (2.0 in)	27 of 100 (Routine)
Goderich	Canada	Record high minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Siliguri	India	Record daily precipitation	123.7 mm (4.9 in)	26 of 100 (Routine)
Ft Bidwell	United States	Record low maximum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Waseca	Canada	Record daily precipitation	28.4 mm (1.1 in)	25 of 100 (Routine)
Tobolsk	Russia	Record daily precipitation	37.3 mm (1.5 in)	24 of 100 (Routine)
Lares	Puerto Rico [United States]	Record daily precipitation	66.3 mm (2.6 in)	23 of 100 (Routine)
Bay Saint Louis	United States	Record daily precipitation	56.6 mm (2.2 in)	23 of 100 (Routine)
Yerevan	Armenia	Record high minimum temperature	23.2 C (73.8 F)	22 of 100 (Routine)
Brawley 2 SW	United States	Record low minimum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Escondido	United States	Record low minimum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
McAlester Rgnl AP	United States	Record low maximum temperature	22.2 C (72.0 F)	22 of 100 (Routine)
Forest Grove	United States	Record daily precipitation	7.4 mm (0.29 in)	20 of 100 (Routine)
Alangudi	India	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Princeton	Canada	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Hornindal	Norway	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Cheljabinsk-Balandi	Russia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Grants Pass	United States	Record daily precipitation	3.8 mm (0.15 in)	20 of 100 (Routine)
Lakeside	United States	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Hedley	Canada	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Skjak	Norway	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Sulitjelma	Norway	Record daily precipitation	16.9 mm (0.7 in)	20 of 100 (Routine)
Corvallis State UNIV	United States	Record daily precipitation	2.8 mm (0.11 in)	20 of 100 (Routine)
Cle Elum	United States	Record daily precipitation	3.8 mm (0.15 in)	20 of 100 (Routine)
Hafslo	Norway	Record daily precipitation	12.0 mm (0.5 in)	20 of 100 (Routine)
Aberdeen	United States	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Vancouver 4 NNE	United States	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Rossland City Yard	Canada	Record daily precipitation	5.6 mm (0.22 in)	20 of 100 (Routine)
Emsdale	Canada	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Daryapur	India	Record daily precipitation	56.6 mm (2.2 in)	20 of 100 (Routine)
Sogndal - Selseng	Norway	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Camden 1	United States	Record high minimum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Centre Hall	United States	Record high minimum temperature	22.2 C (72.0 F)	20 of 100 (Routine)
Ellensburg	United States	Record daily precipitation	1.3 mm (0.05 in)	20 of 100 (Routine)
Papaikou 144.1	United States	Record daily precipitation	34.3 mm (1.4 in)	20 of 100 (Routine)
Gangapur	India	Record daily precipitation	44.5 mm (1.8 in)	19 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record high maximum temperature	43.3 C (109.9 F)	19 of 100 (Routine)
San Jacinto	United States	Record low minimum temperature	7.8 C (46.0 F)	19 of 100 (Routine)

Counts by Type and Timescale

325 records

Records set or tied on 20 July 1940 by type: Highest daily maximum 30, Lowest daily maximum 29, Highest daily minimum 127, Lowest daily minimum 26, Heaviest daily rainfall 113.

Records on 20 July 1940 by type
Record type	Records
Highest daily maximum	30
Lowest daily maximum	29
Highest daily minimum	127
Lowest daily minimum	26
Heaviest daily rainfall	113
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 July 1940 by timescale: all-time 4, monthly 5, daily 316.

How Much Records Were Beaten By

230 broken records

Margins by which the 230 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.1. Ties are not counted.

Top 20 by Significance

20 July 1940

Top 20 records on 20 July 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 July 1940	Tufanganj, IN	daily rain	259.6 mm (10.2 in)	178.1 mm (7.0 in)	29 years	52 of 100 (Notable)
20 July 1940	Conway, US	daily rain	97.5 mm (3.8 in)	76.7 mm (3.0 in)	12 years	48 of 100 (Notable)
20 July 1940	Bend, US	daily rain	29.2 mm (1.1 in)	19.0 mm (0.7 in)	28 years	48 of 100 (Notable)
20 July 1940	Mekliganj, IN	daily rain	207.0 mm (8.1 in)	99.0 mm (3.9 in)	39 years	41 of 100 (Notable)
20 July 1940	Alipurduar, IN	daily rain	268.7 mm (10.6 in)	133.6 mm (5.3 in)	24 years	39 of 100 (Notable)
20 July 1940	Prentice #2, US	daily rain	45.7 mm (1.8 in)	30.5 mm (1.2 in)	39 years	38 of 100 (Notable)
20 July 1940	Big St Germain Dam, US	daily rain	58.4 mm (2.3 in)	33.0 mm (1.3 in)	18 years	37 of 100 (Notable)
20 July 1940	San Jon, US	all-time high min	27.8 C (82.0 F)	1.1 C (2.0 F)	32 years	36 of 100 (Notable)
20 July 1940	Kachugaon, IN	monthly rain	317.5 mm (12.5 in)	44.4 mm (1.7 in)	38 years	35 of 100 (Notable)
20 July 1940	Forbesganj, IN	daily rain	160.0 mm (6.3 in)	88.9 mm (3.5 in)	9 years	34 of 100 (Routine)
20 July 1940	Mathabhanga, IN	daily rain	205.7 mm (8.1 in)	90.4 mm (3.6 in)	29 years	33 of 100 (Routine)
20 July 1940	Gann Valley 4NW, US	all-time high min	27.8 C (82.0 F)	1.7 C (3.1 F)	14 years	32 of 100 (Routine)
20 July 1940	Astana, KZ	all-time high min	23.1 C (73.6 F)	1.2 C (2.2 F)	11 years	31 of 100 (Routine)
20 July 1940	Macon 2 NE, US	daily rain	63.5 mm (2.5 in)	37.8 mm (1.5 in)	3 years	31 of 100 (Routine)
20 July 1940	Clarksville 2NE, US	daily rain	62.2 mm (2.4 in)	35.5 mm (1.4 in)	35 years	31 of 100 (Routine)
20 July 1940	Hedrum, NO	daily rain	48.7 mm (1.9 in)	25.4 mm (1.0 in)	6 years	30 of 100 (Routine)
20 July 1940	Ashland, US	daily low max	18.9 C (66.0 F)	6.1 C (11.0 F)	41 years	30 of 100 (Routine)
20 July 1940	Ilulissat (Jakobshavn), GL	daily high min	8.9 C (48.0 F)	0.7 C (1.3 F)	66 years	29 of 100 (Routine)
20 July 1940	Tiruppathur, IN	daily rain	38.1 mm (1.5 in)	25.1 mm (1.0 in)	33 years	29 of 100 (Routine)
20 July 1940	Burlington, US	daily rain	49.3 mm (1.9 in)	23.4 mm (0.9 in)	2 years	29 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

1809 to 1940

Records set or tied on this calendar date in each year from 1809 to 1940. 1940 had 325 records.

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

Records on 07-20 in each year
Year	Records
1809	1
1810	1
1811	2
1832	2
1844	2
1850	1
1859	2
1863	1
1865	4
1866	1
1867	1
1868	1
1870	1
1872	1
1874	2
1876	1
1877	2
1879	3
1880	1
1881	2
1882	1
1883	2
1885	1
1886	2
1887	1
1888	1
1889	2
1890	5
1892	7
1893	1
1894	1
1895	1
1897	4
1898	2
1899	4
1900	9
1901	3
1902	13
1903	6
1904	10
1905	6
1906	8
1907	12
1908	31
1909	6
1910	27
1911	12
1912	33
1913	28
1914	20
1915	163
1916	117
1917	57
1918	53
1919	40
1920	16
1921	55
1922	52
1923	173
1924	112
1925	125
1926	411
1927	106
1928	366
1929	480
1930	598
1931	362
1932	338
1933	201
1934	857
1935	386
1936	358
1937	213
1938	392
1939	336
1940	325
1941	270
1942	609
1943	326
1944	470
1945	278
1946	482
1947	635
1948	385
1949	807
1950	563
1951	448
1952	488
1953	316
1954	512
1955	377
1956	545
1957	351
1958	536
1959	605
1960	758
1961	338
1962	327
1963	457
1964	416
1965	1,110
1966	469
1967	455
1968	389
1969	649
1970	890
1971	619
1972	1,062
1973	804
1974	489
1975	470
1976	580
1977	899
1978	663
1979	1,249
1980	925
1981	1,048
1982	580
1983	1,117
1984	799
1985	604
1986	848
1987	1,156
1988	1,103
1989	1,183
1990	724
1991	1,024
1992	1,137
1993	901
1994	611
1995	961
1996	1,365
1997	903
1998	1,682
1999	815
2000	1,393
2001	755
2002	986
2003	1,313
2004	978
2005	1,266
2006	1,487
2007	1,124
2008	663
2009	1,533
2010	1,154
2011	1,339
2012	817
2013	850
2014	1,000
2015	812
2016	744
2017	398
2018	930
2019	867
2020	524
2021	683
2022	1,108
2023	812
2024	737
2025	680
2026	863

Download the Data

Data for records on 1940-07-20: 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 25	214
25 to 50	10
50 to 75	0
75 to 100	4
100 to 125	0
125 to 150	1
150 to 175	0
175 to 200	1