Weather Records on 20 November 1940

280 weather records were set or tied worldwide on 20 November 1940. Highest significance: Waianae 798, US.

Key Facts for 20 November 1940

On 20 November 1940, 280 weather records were set or tied at long-record stations worldwide.
48 were record highs and 39 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 274 daily.
Waianae 798 set a daily record precipitation of 94.7 mm (3.7 in) on 20 November 1940.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 455 records.

Record Map

280 stations

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

Weather records on 20 November 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Waianae 798	United States	Record daily precipitation	94.7 mm (3.7 in)	53 of 100 (Notable)
Second Valley (Spring Grove)	Australia	Record daily precipitation	33.0 mm (1.3 in)	52 of 100 (Notable)
Malayattur	India	Record daily precipitation	107.4 mm (4.2 in)	49 of 100 (Notable)
Maunawili Rch	United States	Record daily precipitation	82.0 mm (3.2 in)	49 of 100 (Notable)
Waimanalo 794	United States	Record daily precipitation	88.6 mm (3.5 in)	49 of 100 (Notable)
Kualapuu 534	United States	Record daily precipitation	79.5 mm (3.1 in)	48 of 100 (Notable)
Truchas	United States	Record daily snowfall	24.1 cm (9.5 in)	43 of 100 (Notable)
Aiea Fld 764A	United States	Record daily precipitation	120.7 mm (4.8 in)	43 of 100 (Notable)
Los Lunas	United States	Record daily snowfall	10.2 cm (4.0 in)	36 of 100 (Notable)
Kahuku 912	United States	Record daily precipitation	161.0 mm (6.3 in)	34 of 100 (Routine)
San Jon	United States	Record daily snowfall	10.2 cm (4.0 in)	32 of 100 (Routine)
Apache	United States	Record daily precipitation	69.1 mm (2.7 in)	32 of 100 (Routine)
Postmyr I Drangedal	Norway	Record snow depth	80.0 cm (31.5 in)	31 of 100 (Routine)
Garden City	United States	Record daily snowfall	10.2 cm (4.0 in)	31 of 100 (Routine)
Meeker 5 W	United States	Record daily precipitation	34.5 mm (1.4 in)	31 of 100 (Routine)
Barkestad	Norway	Record snow depth	60.0 cm (23.6 in)	30 of 100 (Routine)
Jemez Springs	United States	Record daily snowfall	20.3 cm (8.0 in)	30 of 100 (Routine)
Bosque del Apache	United States	Record daily snowfall	6.1 cm (2.4 in)	29 of 100 (Routine)
Chama	United States	Record daily snowfall	31.8 cm (12.5 in)	29 of 100 (Routine)
Arukutty	India	Record daily precipitation	61.5 mm (2.4 in)	28 of 100 (Routine)
Chita	Russia	Record low minimum temperature	-40.8 C (-41.4 F)	28 of 100 (Routine)
Le Roy	United States	Record daily precipitation	51.8 mm (2.0 in)	28 of 100 (Routine)
Vinita 2 N	United States	Record daily precipitation	61.2 mm (2.4 in)	28 of 100 (Routine)
Manoa 712.1	United States	Record daily precipitation	65.5 mm (2.6 in)	28 of 100 (Routine)
Two Buttes	United States	Record daily snowfall	14.0 cm (5.5 in)	27 of 100 (Routine)
Tres Piedras	United States	Record daily snowfall	15.2 cm (6.0 in)	27 of 100 (Routine)
Paragonah	United States	Record daily precipitation	29.2 mm (1.1 in)	27 of 100 (Routine)
Robe Comparison	Australia	Record high minimum temperature	20.2 C (68.4 F)	26 of 100 (Routine)
Tucumcari 4 NE	United States	Record daily snowfall	17.8 cm (7.0 in)	26 of 100 (Routine)
Chickasha	United States	Record daily precipitation	40.1 mm (1.6 in)	26 of 100 (Routine)
Woodward	United States	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Clayton Muni Air Pk	United States	Record daily snowfall	5.1 cm (2.0 in)	26 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record high maximum temperature	33.3 C (91.9 F)	25 of 100 (Routine)
Lowestoft	United Kingdom	Record high maximum temperature	14.4 C (57.9 F)	25 of 100 (Routine)
Elkhart	United States	Record daily snowfall	12.7 cm (5.0 in)	24 of 100 (Routine)
Chandler	United States	Record daily precipitation	43.9 mm (1.7 in)	24 of 100 (Routine)
Guthrie 5S	United States	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Muskogee	United States	Record daily precipitation	47.5 mm (1.9 in)	24 of 100 (Routine)
Okmulgee Wtr Wks	United States	Record daily precipitation	31.2 mm (1.2 in)	24 of 100 (Routine)
Mount Gambier Post Office	Australia	Record high minimum temperature	18.4 C (65.1 F)	23 of 100 (Routine)
Big Creek	Canada	Record daily snowfall	16.5 cm (6.5 in)	23 of 100 (Routine)
Nerchinskij Zavod	Russia	Record low minimum temperature	-35.5 C (-31.9 F)	23 of 100 (Routine)
Taos	United States	Record daily snowfall	12.7 cm (5.0 in)	23 of 100 (Routine)
Dalhart Exp STN	United States	Record daily snowfall	5.1 cm (2.0 in)	23 of 100 (Routine)
Hiasen I Sigdal	Norway	Record snow depth	69.0 cm (27.2 in)	22 of 100 (Routine)
Vaughn	United States	Record daily snowfall	5.1 cm (2.0 in)	22 of 100 (Routine)
Thermopolis	United States	Record low minimum temperature	-21.7 C (-7.1 F)	22 of 100 (Routine)
Vasilevici	Belarus	Record high minimum temperature	8.4 C (47.1 F)	21 of 100 (Routine)
Vanersborg	Sweden	Record high minimum temperature	5.0 C (41.0 F)	21 of 100 (Routine)
Seven Oaks	United States	Record low minimum temperature	-6.7 C (19.9 F)	21 of 100 (Routine)
San Jon	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Truchas	United States	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Espanola	United States	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Saguache	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Lawrence	United States	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Greensburg	United States	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Liberal	United States	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Malmesbury	South Africa	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Hugoton	United States	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Plains	United States	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)

Counts by Type and Timescale

280 records

Records set or tied on 20 November 1940 by type: Highest daily maximum 20, Lowest daily maximum 19, Highest daily minimum 28, Lowest daily minimum 20, Heaviest daily rainfall 139, Heaviest daily snowfall 40, Deepest snow cover 14.

Records on 20 November 1940 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	19
Highest daily minimum	28
Lowest daily minimum	20
Heaviest daily rainfall	139
Heaviest daily snowfall	40
Deepest snow cover	14

Records on 20 November 1940 by timescale: all-time 0, monthly 6, daily 274.

How Much Records Were Beaten By

249 broken records

Margins by which the 249 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 280.0. Ties are not counted.

Top 20 by Significance

20 November 1940

Top 20 records on 20 November 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 November 1940	Waianae 798, US	daily rain	94.7 mm (3.7 in)	92.7 mm (3.6 in)	35 years	53 of 100 (Notable)
20 November 1940	Second Valley (Spring Grove), AU	daily rain	33.0 mm (1.3 in)	25.4 mm (1.0 in)	34 years	52 of 100 (Notable)
20 November 1940	Malayattur, IN	daily rain	107.4 mm (4.2 in)	80.7 mm (3.2 in)	21 years	49 of 100 (Notable)
20 November 1940	Maunawili Rch, US	daily rain	82.0 mm (3.2 in)	61.7 mm (2.4 in)	23 years	49 of 100 (Notable)
20 November 1940	Waimanalo 794, US	daily rain	88.6 mm (3.5 in)	78.9 mm (3.1 in)	20 years	49 of 100 (Notable)
20 November 1940	Kualapuu 534, US	daily rain	79.5 mm (3.1 in)	55.4 mm (2.2 in)	19 years	48 of 100 (Notable)
20 November 1940	Truchas, US	daily snowfall	24.1 cm (9.5 in)	24.1 cm (9.5 in)	31 years	43 of 100 (Notable)
20 November 1940	Aiea Fld 764A, US	daily rain	120.7 mm (4.8 in)	49.6 mm (2.0 in)	35 years	43 of 100 (Notable)
20 November 1940	Los Lunas, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	41 years	36 of 100 (Notable)
20 November 1940	Kahuku 912, US	monthly rain	161.0 mm (6.3 in)	17.5 mm (0.7 in)	21 years	34 of 100 (Routine)
20 November 1940	San Jon, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	31 years	32 of 100 (Routine)
20 November 1940	Apache, US	monthly rain	69.1 mm (2.7 in)	13.7 mm (0.5 in)	27 years	32 of 100 (Routine)
20 November 1940	Postmyr I Drangedal, NO	daily snow depth	80.0 cm (31.5 in)	28.0 cm (11.0 in)	17 years	31 of 100 (Routine)
20 November 1940	Garden City, US	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	10 years	31 of 100 (Routine)
20 November 1940	Meeker 5 W, US	daily rain	34.5 mm (1.4 in)	25.6 mm (1.0 in)	33 years	31 of 100 (Routine)
20 November 1940	Barkestad, NO	daily snow depth	60.0 cm (23.6 in)	28.0 cm (11.0 in)	35 years	30 of 100 (Routine)
20 November 1940	Jemez Springs, US	daily snowfall	20.3 cm (8.0 in)	13.9 cm (5.5 in)	6 years	30 of 100 (Routine)
20 November 1940	Bosque del Apache, US	daily snowfall	6.1 cm (2.4 in)	6.1 cm (2.4 in)	44 years	29 of 100 (Routine)
20 November 1940	Chama, US	daily snowfall	31.8 cm (12.5 in)	24.2 cm (9.5 in)	6 years	29 of 100 (Routine)
20 November 1940	Arukutty, IN	daily rain	61.5 mm (2.4 in)	41.2 mm (1.6 in)	24 years	28 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

1793 to 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 280 records.

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

Records on 11-20 in each year
Year	Records
1793	1
1809	2
1816	3
1829	4
1835	1
1836	1
1847	1
1851	1
1852	1
1855	1
1858	1
1859	1
1862	1
1865	1
1871	1
1873	1
1874	1
1878	1
1879	3
1880	2
1881	1
1884	1
1885	2
1886	1
1887	1
1889	3
1890	2
1891	4
1893	2
1894	1
1897	7
1900	11
1901	6
1902	10
1903	10
1904	9
1905	7
1906	22
1907	5
1908	8
1909	26
1910	14
1911	29
1912	15
1913	64
1914	89
1915	12
1916	16
1917	65
1918	14
1919	47
1920	15
1921	73
1922	26
1923	45
1924	84
1925	224
1926	294
1927	105
1928	140
1929	130
1930	600
1931	646
1932	255
1933	702
1934	477
1935	55
1936	286
1937	1,102
1938	167
1939	265
1940	280
1941	438
1942	774
1943	248
1944	347
1945	322
1946	774
1947	413
1948	651
1949	362
1950	877
1951	742
1952	494
1953	850
1954	876
1955	365
1956	598
1957	190
1958	218
1959	270
1960	330
1961	540
1962	700
1963	597
1964	863
1965	285
1966	434
1967	277
1968	479
1969	710
1970	368
1971	651
1972	729
1973	941
1974	655
1975	660
1976	389
1977	1,332
1978	1,413
1979	819
1980	745
1981	1,119
1982	800
1983	1,054
1984	537
1985	2,379
1986	1,142
1987	666
1988	1,218
1989	986
1990	1,010
1991	798
1992	1,416
1993	1,211
1994	1,484
1995	1,237
1996	1,566
1997	461
1998	829
1999	493
2000	1,163
2001	843
2002	900
2003	1,242
2004	738
2005	432
2006	1,034
2007	1,151
2008	1,171
2009	1,184
2010	678
2011	816
2012	657
2013	411
2014	1,018
2015	733
2016	725
2017	451
2018	339
2019	791
2020	578
2021	414
2022	1,283
2023	554
2024	645
2025	660

Download the Data

Data for records on 1940-11-20: 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 50	215
50 to 100	22
100 to 150	7
150 to 200	1
200 to 250	2
250 to 300	2