Weather Records on 20 November 1970

368 weather records were set or tied worldwide on 20 November 1970. Highest significance: Arni, IN.

Key Facts for 20 November 1970

On 20 November 1970, 368 weather records were set or tied at long-record stations worldwide.
78 were record highs and 19 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 9 monthly and 358 daily.
Arni set an all-time record daily precipitation of 340.0 mm (13.4 in) on 20 November 1970.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 454 records.

Record Map

368 stations

368 station records on 20 November 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 November 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Arni	India	Record daily precipitation	340.0 mm (13.4 in)	76 of 100 (Major)
Fairbanks Intl AP	United States	Record daily snowfall	37.1 cm (14.6 in)	62 of 100 (Major)
Rzev	Russia	Record daily precipitation	39.9 mm (1.6 in)	45 of 100 (Notable)
Bjornholt	Norway	Record snow depth	80.0 cm (31.5 in)	44 of 100 (Notable)
Dunkirk 19NNE	United States	Record daily snowfall	12.7 cm (5.0 in)	43 of 100 (Notable)
Arkonam	India	Record daily precipitation	177.5 mm (7.0 in)	41 of 100 (Notable)
Shawinigan	Canada	Record daily precipitation	48.3 mm (1.9 in)	40 of 100 (Notable)
Nidamangalam	India	Record daily precipitation	201.8 mm (7.9 in)	39 of 100 (Notable)
Chester	United States	Record daily snowfall	12.7 cm (5.0 in)	39 of 100 (Notable)
Kanevskaja	Russia	Record daily precipitation	32.3 mm (1.3 in)	38 of 100 (Notable)
Toliness Station	Australia	Record daily precipitation	39.4 mm (1.6 in)	37 of 100 (Notable)
Austin Waste Wtp Facility	United States	Record daily precipitation	31.8 mm (1.3 in)	37 of 100 (Notable)
Saltspring Island	Canada	Record daily snowfall	12.7 cm (5.0 in)	36 of 100 (Notable)
1 WSW Princeton	United States	Record daily precipitation	43.2 mm (1.7 in)	36 of 100 (Notable)
Chemainus	Canada	Record daily snowfall	14.0 cm (5.5 in)	35 of 100 (Notable)
Villupuram	India	Record daily precipitation	200.0 mm (7.9 in)	35 of 100 (Notable)
University Exp STN	United States	Record snow depth	63.5 cm (25.0 in)	35 of 100 (Notable)
Sidney	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Nenana Muni AP	United States	Record daily snowfall	20.3 cm (8.0 in)	34 of 100 (Routine)
St Charles de Mandeville	Canada	Record daily precipitation	55.4 mm (2.2 in)	33 of 100 (Routine)
Kattumannarkoil	India	Record daily precipitation	225.0 mm (8.9 in)	33 of 100 (Routine)
Beaver Is	United States	Record daily precipitation	27.2 mm (1.1 in)	33 of 100 (Routine)
Kahului AP	United States	Record daily precipitation	38.4 mm (1.5 in)	33 of 100 (Routine)
Ballina (Crowley Village)	Australia	Record daily precipitation	28.4 mm (1.1 in)	32 of 100 (Routine)
Adirampatanam	India	Record daily precipitation	125.2 mm (4.9 in)	32 of 100 (Routine)
Tirumayam	India	Record daily precipitation	50.4 mm (2.0 in)	32 of 100 (Routine)
Long Prairie	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Joplin	United States	Record daily snowfall	10.2 cm (4.0 in)	32 of 100 (Routine)
Srimushnam	India	Record daily precipitation	165.0 mm (6.5 in)	31 of 100 (Routine)
Aledo	United States	Record daily precipitation	25.4 mm (1.0 in)	31 of 100 (Routine)
Chicago Midway AP 3SW	United States	Record daily precipitation	31.2 mm (1.2 in)	31 of 100 (Routine)
Cumbalum (Fairview)	Australia	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
St Lin des Laurentides	Canada	Record daily precipitation	42.7 mm (1.7 in)	30 of 100 (Routine)
Drobeta Turnu Severin	Romania	Record high maximum temperature	18.0 C (64.4 F)	30 of 100 (Routine)
Kubanskaya Ustevaya	Russia	Record daily precipitation	38.6 mm (1.5 in)	30 of 100 (Routine)
Oconto 4 W	United States	Record daily snowfall	6.6 cm (2.6 in)	30 of 100 (Routine)
University Exp STN	United States	Record daily snowfall	22.9 cm (9.0 in)	30 of 100 (Routine)
Aseral	Norway	Record snow depth	36.0 cm (14.2 in)	29 of 100 (Routine)
Union City	United States	Record daily precipitation	44.2 mm (1.7 in)	29 of 100 (Routine)
Huberdeau	Canada	Record daily precipitation	26.4 mm (1.0 in)	28 of 100 (Routine)
Cuddalore	India	Record daily precipitation	306.3 mm (12.1 in)	28 of 100 (Routine)
Garden Head	Canada	Record daily snowfall	10.2 cm (4.0 in)	27 of 100 (Routine)
Joliette	Canada	Record daily precipitation	39.4 mm (1.6 in)	27 of 100 (Routine)
Thiruthuraipoond	India	Record daily precipitation	184.0 mm (7.2 in)	27 of 100 (Routine)
Vedaranayam	India	Record daily precipitation	211.5 mm (8.3 in)	26 of 100 (Routine)
Pudukkottai	India	Record daily precipitation	63.0 mm (2.5 in)	26 of 100 (Routine)
Santa Maria Asuncion Tlaxiaco	Mexico	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Greenville 2 W	United States	Record daily precipitation	46.2 mm (1.8 in)	26 of 100 (Routine)
McKinley Park	United States	Record daily snowfall	40.6 cm (16.0 in)	26 of 100 (Routine)
Golden A	Canada	Record daily snowfall	8.9 cm (3.5 in)	25 of 100 (Routine)
Kjelsas I Sorkedalen	Norway	Record snow depth	60.0 cm (23.6 in)	25 of 100 (Routine)
Tuddal	Norway	Record snow depth	55.0 cm (21.7 in)	25 of 100 (Routine)
Oneonta	United States	Record daily precipitation	28.2 mm (1.1 in)	25 of 100 (Routine)
Watersmeet	United States	Record daily snowfall	15.2 cm (6.0 in)	25 of 100 (Routine)
Powell River	Canada	Record low minimum temperature	-5.6 C (21.9 F)	24 of 100 (Routine)
Chidambaram	India	Record daily precipitation	184.5 mm (7.3 in)	24 of 100 (Routine)
Mayuram	India	Record daily precipitation	270.0 mm (10.6 in)	24 of 100 (Routine)
Gvarv	Norway	Record snow depth	26.0 cm (10.2 in)	24 of 100 (Routine)
Alpine	United States	Record high minimum temperature	-2.2 C (28.0 F)	24 of 100 (Routine)
Kula Sanatorium 267	United States	Record high minimum temperature	17.2 C (63.0 F)	24 of 100 (Routine)

Counts by Type and Timescale

368 records

Records set or tied on 20 November 1970 by type: Highest daily maximum 25, Lowest daily maximum 3, Highest daily minimum 53, Lowest daily minimum 16, Heaviest daily rainfall 214, Heaviest daily snowfall 44, Deepest snow cover 13.

Records on 20 November 1970 by type
Record type	Records
Highest daily maximum	25
Lowest daily maximum	3
Highest daily minimum	53
Lowest daily minimum	16
Heaviest daily rainfall	214
Heaviest daily snowfall	44
Deepest snow cover	13

Records on 20 November 1970 by timescale: all-time 1, monthly 9, daily 358.

How Much Records Were Beaten By

319 broken records

Margins by which the 319 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 1970

Top 20 records on 20 November 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 November 1970	Arni, IN	all-time rain	340.0 mm (13.4 in)	83.5 mm (3.3 in)	57 years	76 of 100 (Major)
20 November 1970	Fairbanks Intl AP, US	monthly snowfall	37.1 cm (14.6 in)	12.5 cm (4.9 in)	35 years	62 of 100 (Major)
20 November 1970	Rzev, RU	daily rain	39.9 mm (1.6 in)	30.9 mm (1.2 in)	7 years	45 of 100 (Notable)
20 November 1970	Bjornholt, NO	daily snow depth	80.0 cm (31.5 in)	28.0 cm (11.0 in)	55 years	44 of 100 (Notable)
20 November 1970	Dunkirk 19NNE, US	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	39 years	43 of 100 (Notable)
20 November 1970	Arkonam, IN	daily rain	177.5 mm (7.0 in)	88.1 mm (3.5 in)	9 years	41 of 100 (Notable)
20 November 1970	Shawinigan, CA	daily rain	48.3 mm (1.9 in)	24.7 mm (1.0 in)	20 years	40 of 100 (Notable)
20 November 1970	Nidamangalam, IN	daily rain	201.8 mm (7.9 in)	79.4 mm (3.1 in)	13 years	39 of 100 (Notable)
20 November 1970	Chester, US	daily snowfall	12.7 cm (5.0 in)	10.2 cm (4.0 in)	24 years	39 of 100 (Notable)
20 November 1970	Kanevskaja, RU	daily rain	32.3 mm (1.3 in)	20.7 mm (0.8 in)	3 years	38 of 100 (Notable)
20 November 1970	Toliness Station, AU	daily rain	39.4 mm (1.6 in)	17.6 mm (0.7 in)	56 years	37 of 100 (Notable)
20 November 1970	Austin Waste Wtp Facility, US	daily rain	31.8 mm (1.3 in)	21.6 mm (0.9 in)	16 years	37 of 100 (Notable)
20 November 1970	Saltspring Island, CA	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	48 years	36 of 100 (Notable)
20 November 1970	1 WSW Princeton, US	daily rain	43.2 mm (1.7 in)	12.7 mm (0.5 in)	63 years	36 of 100 (Notable)
20 November 1970	Chemainus, CA	daily snowfall	14.0 cm (5.5 in)	8.2 cm (3.2 in)	48 years	35 of 100 (Notable)
20 November 1970	Villupuram, IN	monthly rain	200.0 mm (7.9 in)	6.2 mm (0.24 in)	56 years	35 of 100 (Notable)
20 November 1970	University Exp STN, US	monthly snow depth	63.5 cm (25.0 in)	10.2 cm (4.0 in)	34 years	35 of 100 (Notable)
20 November 1970	Sidney, US	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	12 years	34 of 100 (Routine)
20 November 1970	Nenana Muni AP, US	monthly snowfall	20.3 cm (8.0 in)	5.1 cm (2.0 in)	4 years	34 of 100 (Routine)
20 November 1970	St Charles de Mandeville, CA	monthly rain	55.4 mm (2.2 in)	6.1 mm (0.24 in)	35 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

1793 to 1970

Records set or tied on this calendar date in each year from 1793 to 1970. 1970 had 368 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 1970-11-20: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	287
50 to 100	27
100 to 150	3
150 to 200	1
200 to 250	0
250 to 300	1