Weather Records on 20 June 1940

469 weather records were set or tied worldwide on 20 June 1940. Highest significance: St Georges, CA.

Key Facts for 20 June 1940

On 20 June 1940, 469 weather records were set or tied at long-record stations worldwide.
162 were record highs and 204 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 10 monthly and 458 daily.
St Georges set a daily record precipitation of 25.1 mm (1.0 in) on 20 June 1940.
Across 158 earlier years (1800 to 2026) the same calendar date averaged 458 records.

Record Map

469 stations

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

Weather records on 20 June 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
St Georges	Canada	Record daily precipitation	25.1 mm (1.0 in)	56 of 100 (Notable)
Fort Simpson	Canada	Record daily precipitation	27.7 mm (1.1 in)	54 of 100 (Notable)
Rajahmundry	India	Record daily precipitation	98.6 mm (3.9 in)	51 of 100 (Notable)
Botanic Gardens - Pmb	South Africa	Record daily precipitation	50.8 mm (2.0 in)	49 of 100 (Notable)
Kandukur	India	Record daily precipitation	79.2 mm (3.1 in)	48 of 100 (Notable)
Ongole	India	Record daily precipitation	37.8 mm (1.5 in)	44 of 100 (Notable)
Tuba City	United States	Record high maximum temperature	43.3 C (109.9 F)	37 of 100 (Notable)
Toronto	Canada	Record low maximum temperature	14.4 C (57.9 F)	36 of 100 (Notable)
Punganur	India	Record daily precipitation	40.4 mm (1.6 in)	36 of 100 (Notable)
Lebanon 3 W	United States	Record daily precipitation	44.5 mm (1.8 in)	35 of 100 (Notable)
Simcoe	Canada	Record low maximum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Lakhipur	India	Record daily precipitation	147.3 mm (5.8 in)	33 of 100 (Routine)
Clyde State School	Australia	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)
Sidlaghatta	India	Record daily precipitation	49.5 mm (1.9 in)	32 of 100 (Routine)
Vidisha	India	Record daily precipitation	90.9 mm (3.6 in)	31 of 100 (Routine)
New Braunfels	United States	Record daily precipitation	68.6 mm (2.7 in)	31 of 100 (Routine)
Sydney	Canada	Record daily precipitation	54.1 mm (2.1 in)	30 of 100 (Routine)
Corinne	United States	Record high minimum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Pawnee City	United States	Record daily precipitation	58.4 mm (2.3 in)	29 of 100 (Routine)
Table Rock 4N	United States	Record daily precipitation	67.1 mm (2.6 in)	29 of 100 (Routine)
Manginapudi	India	Record daily precipitation	63.5 mm (2.5 in)	28 of 100 (Routine)
Marsrakh	India	Record daily precipitation	86.4 mm (3.4 in)	28 of 100 (Routine)
Crookston NW Exp STN	United States	Record low minimum temperature	-0.6 C (30.9 F)	28 of 100 (Routine)
Goderich	Canada	Record low minimum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
Laketown	United States	Record high minimum temperature	15.0 C (59.0 F)	27 of 100 (Routine)
Jacksonville Wb City	United States	Record high maximum temperature	36.7 C (98.1 F)	27 of 100 (Routine)
Chintamani	India	Record daily precipitation	28.4 mm (1.1 in)	26 of 100 (Routine)
Soro	India	Record daily precipitation	100.3 mm (3.9 in)	26 of 100 (Routine)
Seward	United States	Record daily precipitation	45.2 mm (1.8 in)	26 of 100 (Routine)
Lake City 2 E	United States	Record high minimum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Genoa 2 W	United States	Record daily precipitation	54.6 mm (2.1 in)	25 of 100 (Routine)
Carlsbad	United States	Record low maximum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Warren	United States	Record low maximum temperature	14.4 C (57.9 F)	25 of 100 (Routine)
Port Said	Egypt	Record high minimum temperature	25.0 C (77.0 F)	24 of 100 (Routine)
Alamur(Alamar)	India	Record daily precipitation	90.7 mm (3.6 in)	24 of 100 (Routine)
Grand Forks UNIV (NWS)	United States	Record low minimum temperature	0.0 C (32.0 F)	24 of 100 (Routine)
Tooele	United States	Record high minimum temperature	25.0 C (77.0 F)	24 of 100 (Routine)
Hana 354	United States	Record high maximum temperature	31.7 C (89.1 F)	24 of 100 (Routine)
Mount McIntyre	Australia	Record daily precipitation	25.4 mm (1.0 in)	23 of 100 (Routine)
Orillia	Canada	Record low maximum temperature	12.2 C (54.0 F)	23 of 100 (Routine)
Brantford	Canada	Record low maximum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Stratford	Canada	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Quitman 2 NW	United States	Record high minimum temperature	25.0 C (77.0 F)	23 of 100 (Routine)
American Falls 6 NE	United States	Record high minimum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Angus 1 N	United States	Record low minimum temperature	-2.2 C (28.0 F)	23 of 100 (Routine)
Campbell	United States	Record low minimum temperature	3.9 C (39.0 F)	23 of 100 (Routine)
Crete 4ESE	United States	Record low minimum temperature	7.8 C (46.0 F)	23 of 100 (Routine)
Wahoo	United States	Record daily precipitation	36.8 mm (1.4 in)	23 of 100 (Routine)
Park City G.C.	United States	Record high minimum temperature	19.4 C (66.9 F)	23 of 100 (Routine)
Granite Reef Dam	United States	Record high minimum temperature	30.6 C (87.1 F)	22 of 100 (Routine)
Grace	United States	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Olathe 3E	United States	Record daily precipitation	49.0 mm (1.9 in)	22 of 100 (Routine)
Hebgen Dam	United States	Record high maximum temperature	35.6 C (96.1 F)	22 of 100 (Routine)
Upper Sandusky	United States	Record low maximum temperature	20.0 C (68.0 F)	22 of 100 (Routine)
Dayville	United States	Record high minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Sundance	United States	Record daily precipitation	31.8 mm (1.3 in)	22 of 100 (Routine)
Parry Sound	Canada	Record low maximum temperature	12.2 C (54.0 F)	21 of 100 (Routine)
Peterborough	Canada	Record low maximum temperature	12.8 C (55.0 F)	21 of 100 (Routine)
Khalilabad	India	Record daily precipitation	63.5 mm (2.5 in)	21 of 100 (Routine)
Subiaco	United States	Record daily precipitation	41.4 mm (1.6 in)	21 of 100 (Routine)

Counts by Type and Timescale

469 records

Records set or tied on 20 June 1940 by type: Highest daily maximum 57, Lowest daily maximum 88, Highest daily minimum 105, Lowest daily minimum 116, Heaviest daily rainfall 103.

Records on 20 June 1940 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	88
Highest daily minimum	105
Lowest daily minimum	116
Heaviest daily rainfall	103
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 June 1940 by timescale: all-time 1, monthly 10, daily 458.

How Much Records Were Beaten By

370 broken records

Margins by which the 370 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 85.6. Ties are not counted.

Top 20 by Significance

20 June 1940

Top 20 records on 20 June 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 June 1940	St Georges, CA	daily rain	25.1 mm (1.0 in)	21.5 mm (0.8 in)	41 years	56 of 100 (Notable)
20 June 1940	Fort Simpson, CA	daily rain	27.7 mm (1.1 in)	22.6 mm (0.9 in)	40 years	54 of 100 (Notable)
20 June 1940	Rajahmundry, IN	daily rain	98.6 mm (3.9 in)	66.3 mm (2.6 in)	37 years	51 of 100 (Notable)
20 June 1940	Botanic Gardens - Pmb, ZA	daily rain	50.8 mm (2.0 in)	49.5 mm (1.9 in)	20 years	49 of 100 (Notable)
20 June 1940	Kandukur, IN	monthly rain	79.2 mm (3.1 in)	23.6 mm (0.9 in)	37 years	48 of 100 (Notable)
20 June 1940	Ongole, IN	daily rain	37.8 mm (1.5 in)	28.4 mm (1.1 in)	38 years	44 of 100 (Notable)
20 June 1940	Tuba City, US	all-time high max	43.3 C (109.9 F)	1.1 C (2.0 F)	37 years	37 of 100 (Notable)
20 June 1940	Toronto, CA	daily low max	14.4 C (57.9 F)	1.2 C (2.2 F)	82 years	36 of 100 (Notable)
20 June 1940	Punganur, IN	daily rain	40.4 mm (1.6 in)	30.0 mm (1.2 in)	38 years	36 of 100 (Notable)
20 June 1940	Lebanon 3 W, US	daily rain	44.5 mm (1.8 in)	21.4 mm (0.8 in)	37 years	35 of 100 (Notable)
20 June 1940	Simcoe, CA	daily low max	13.3 C (55.9 F)	4.5 C (8.1 F)	56 years	34 of 100 (Routine)
20 June 1940	Lakhipur, IN	daily rain	147.3 mm (5.8 in)	85.6 mm (3.4 in)	8 years	33 of 100 (Routine)
20 June 1940	Clyde State School, AU	daily rain	30.5 mm (1.2 in)	8.9 mm (0.35 in)	51 years	32 of 100 (Routine)
20 June 1940	Sidlaghatta, IN	daily rain	49.5 mm (1.9 in)	41.9 mm (1.6 in)	18 years	32 of 100 (Routine)
20 June 1940	Vidisha, IN	daily rain	90.9 mm (3.6 in)	52.8 mm (2.1 in)	3 years	31 of 100 (Routine)
20 June 1940	New Braunfels, US	daily rain	68.6 mm (2.7 in)	50.3 mm (2.0 in)	1 year	31 of 100 (Routine)
20 June 1940	Sydney, CA	daily rain	54.1 mm (2.1 in)	2.8 mm (0.11 in)	69 years	30 of 100 (Routine)
20 June 1940	Corinne, US	monthly high min	23.9 C (75.0 F)	1.7 C (3.1 F)	43 years	30 of 100 (Routine)
20 June 1940	Pawnee City, US	daily rain	58.4 mm (2.3 in)	36.3 mm (1.4 in)	5 years	29 of 100 (Routine)
20 June 1940	Table Rock 4N, US	daily rain	67.1 mm (2.6 in)	26.7 mm (1.1 in)	21 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

1800 to 1940

Records set or tied on this calendar date in each year from 1800 to 1940. 1940 had 469 records.

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

Records on 06-20 in each year
Year	Records
1800	1
1803	1
1813	1
1821	2
1838	1
1839	1
1841	1
1844	1
1846	2
1847	1
1850	1
1855	2
1857	1
1861	1
1865	2
1867	1
1869	2
1872	1
1873	1
1877	2
1879	1
1884	1
1886	2
1887	2
1891	2
1892	2
1893	2
1895	4
1896	3
1897	6
1898	3
1899	6
1900	4
1901	5
1902	7
1903	22
1904	13
1905	14
1906	18
1907	10
1908	30
1909	9
1910	27
1911	27
1912	17
1913	30
1914	53
1915	75
1916	83
1917	96
1918	54
1919	67
1920	40
1921	42
1922	61
1923	263
1924	204
1925	483
1926	228
1927	193
1928	199
1929	137
1930	143
1931	536
1932	182
1933	676
1934	301
1935	337
1936	529
1937	412
1938	326
1939	270
1940	469
1941	200
1942	757
1943	447
1944	315
1945	769
1946	849
1947	387
1948	554
1949	314
1950	328
1951	289
1952	318
1953	998
1954	414
1955	291
1956	484
1957	598
1958	603
1959	504
1960	451
1961	836
1962	173
1963	379
1964	729
1965	463
1966	441
1967	687
1968	559
1969	982
1970	482
1971	395
1972	660
1973	553
1974	743
1975	984
1976	899
1977	453
1978	480
1979	727
1980	922
1981	987
1982	801
1983	724
1984	686
1985	811
1986	732
1987	960
1988	1,222
1989	918
1990	899
1991	1,085
1992	1,049
1993	964
1994	925
1995	1,260
1996	1,123
1997	738
1998	1,627
1999	906
2000	1,328
2001	771
2002	955
2003	843
2004	1,071
2005	1,055
2006	820
2007	1,208
2008	669
2009	1,060
2010	865
2011	1,359
2012	1,045
2013	879
2014	381
2015	637
2016	1,352
2017	1,086
2018	635
2019	693
2020	590
2021	1,161
2022	972
2023	1,265
2024	783
2025	944
2026	757

Download the Data

Data for records on 1940-06-20: 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	349
20 to 40	12
40 to 60	6
60 to 80	2
80 to 100	1