Weather Records on 20 November 1986

1,142 weather records were set or tied worldwide on 20 November 1986. Highest significance: Dwtn Charleston, US.

Key Facts for 20 November 1986

On 20 November 1986, 1,142 weather records were set or tied at long-record stations worldwide.
340 were record highs and 235 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 50 monthly and 1,092 daily.
Dwtn Charleston set a daily record precipitation of 50.0 mm (2.0 in) on 20 November 1986.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 449 records.

Record Map

1,142 stations

1,142 station records on 20 November 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 November 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dwtn Charleston	United States	Record daily precipitation	50.0 mm (2.0 in)	62 of 100 (Major)
Grundy Ctr	United States	Record daily snowfall	16.5 cm (6.5 in)	59 of 100 (Notable)
Taunton	United States	Record daily snowfall	7.6 cm (3.0 in)	57 of 100 (Notable)
Darlington Wwtp	United States	Record snow depth	17.8 cm (7.0 in)	56 of 100 (Notable)
Corozal Substn	Puerto Rico [United States]	Record daily precipitation	86.1 mm (3.4 in)	55 of 100 (Notable)
Toledo 3N	United States	Record daily snowfall	15.2 cm (6.0 in)	55 of 100 (Notable)
Johnstown	United States	Record daily precipitation	53.3 mm (2.1 in)	55 of 100 (Notable)
Mather 3 NW	United States	Record daily snowfall	15.2 cm (6.0 in)	55 of 100 (Notable)
Prairie du Chien	United States	Record daily snowfall	12.7 cm (5.0 in)	55 of 100 (Notable)
Bindi	Australia	Record daily precipitation	40.6 mm (1.6 in)	54 of 100 (Notable)
Excelsior (Mun)	South Africa	Record daily precipitation	51.0 mm (2.0 in)	53 of 100 (Notable)
Green Bay	United States	Record snow depth	22.9 cm (9.0 in)	53 of 100 (Notable)
Buxton (Bos)	South Africa	Record daily precipitation	90.5 mm (3.6 in)	51 of 100 (Notable)
Allison	United States	Record snow depth	27.9 cm (11.0 in)	51 of 100 (Notable)
Anamosa 1 WNW	United States	Record snow depth	12.7 cm (5.0 in)	51 of 100 (Notable)
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	67.4 mm (2.7 in)	50 of 100 (Notable)
Newton	United States	Record daily snowfall	10.2 cm (4.0 in)	50 of 100 (Notable)
Forbes (Camp Street)	Australia	Record daily precipitation	33.6 mm (1.3 in)	49 of 100 (Notable)
Mangochi	Malawi	Record daily precipitation	52.3 mm (2.1 in)	49 of 100 (Notable)
Vinton	United States	Record snow depth	22.9 cm (9.0 in)	49 of 100 (Notable)
Caledonia	United States	Record daily snowfall	12.7 cm (5.0 in)	49 of 100 (Notable)
Lancaster 4 WSW	United States	Record daily snowfall	10.2 cm (4.0 in)	49 of 100 (Notable)
Portage Wwtp	United States	Record daily snowfall	10.2 cm (4.0 in)	49 of 100 (Notable)
Portage Wwtp	United States	Record snow depth	17.8 cm (7.0 in)	49 of 100 (Notable)
Lapeer Wwtp	United States	Record daily precipitation	43.2 mm (1.7 in)	48 of 100 (Notable)
Shawano 2SSW	United States	Record daily snowfall	22.9 cm (9.0 in)	48 of 100 (Notable)
Stockton 3NNE	United States	Record snow depth	25.4 cm (10.0 in)	46 of 100 (Notable)
Madison Dane Co Rgnl AP	United States	Record snow depth	17.8 cm (7.0 in)	46 of 100 (Notable)
Lawson (Wilson Street)	Australia	Record daily precipitation	54.2 mm (2.1 in)	45 of 100 (Notable)
Guttenberg L&D 10	United States	Record snow depth	20.3 cm (8.0 in)	45 of 100 (Notable)
Dodgeville Wwtp	United States	Record snow depth	20.3 cm (8.0 in)	45 of 100 (Notable)
Platteville	United States	Record snow depth	22.9 cm (9.0 in)	45 of 100 (Notable)
Snowball	Australia	Record daily precipitation	51.0 mm (2.0 in)	44 of 100 (Notable)
Breadalbane (Old Post Office)	Australia	Record daily precipitation	40.0 mm (1.6 in)	44 of 100 (Notable)
Quandialla Post Office	Australia	Record daily precipitation	37.8 mm (1.5 in)	44 of 100 (Notable)
Dubuque L&D 11	United States	Record snow depth	20.3 cm (8.0 in)	44 of 100 (Notable)
Cooperstown	United States	Record low minimum temperature	-16.7 C (1.9 F)	44 of 100 (Notable)
Hemlock	United States	Record low minimum temperature	-13.3 C (8.1 F)	44 of 100 (Notable)
Appleton	United States	Record snow depth	20.3 cm (8.0 in)	44 of 100 (Notable)
Shawano 2SSW	United States	Record snow depth	27.9 cm (11.0 in)	44 of 100 (Notable)
Watertown Wwtp	United States	Record daily snowfall	11.4 cm (4.5 in)	44 of 100 (Notable)
Greensboro	United States	Record daily precipitation	68.3 mm (2.7 in)	43 of 100 (Notable)
Belle Plaine	United States	Record snow depth	12.7 cm (5.0 in)	43 of 100 (Notable)
Dodgeville Wwtp	United States	Record daily snowfall	12.7 cm (5.0 in)	43 of 100 (Notable)
Manitowoc	United States	Record daily snowfall	11.4 cm (4.5 in)	43 of 100 (Notable)
Reedsburg Wwtp	United States	Record snow depth	22.9 cm (9.0 in)	43 of 100 (Notable)
Devils Lake Kdlr	United States	Record snow depth	48.3 cm (19.0 in)	43 of 100 (Notable)
Wisemans Ferry (Old Po)	Australia	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Charleston Intl AP	United States	Record daily precipitation	65.0 mm (2.6 in)	42 of 100 (Notable)
Plymouth-Kingston	United States	Record daily snowfall	6.4 cm (2.5 in)	41 of 100 (Notable)
Milford Gm Proving Ground	United States	Record daily snowfall	10.9 cm (4.3 in)	41 of 100 (Notable)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	42.0 mm (1.7 in)	40 of 100 (Notable)
Britt 3E	United States	Record snow depth	22.9 cm (9.0 in)	40 of 100 (Notable)
Darlington Wwtp	United States	Record daily snowfall	6.4 cm (2.5 in)	40 of 100 (Notable)
Fond du Lac Wwtp	United States	Record daily snowfall	8.9 cm (3.5 in)	40 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record low minimum temperature	9.1 C (48.4 F)	39 of 100 (Notable)
Tsabong	Botswana	Record daily precipitation	25.2 mm (1.0 in)	39 of 100 (Notable)
Steeunmekaar (Pol)	South Africa	Record daily precipitation	38.0 mm (1.5 in)	39 of 100 (Notable)
The Cliff	South Africa	Record daily precipitation	39.0 mm (1.5 in)	39 of 100 (Notable)
Cockaponset Rs	United States	Record daily precipitation	102.1 mm (4.0 in)	39 of 100 (Notable)

Counts by Type and Timescale

1,142 records

Records set or tied on 20 November 1986 by type: Highest daily maximum 177, Lowest daily maximum 90, Highest daily minimum 163, Lowest daily minimum 145, Heaviest daily rainfall 227, Heaviest daily snowfall 160, Deepest snow cover 180.

Records on 20 November 1986 by type
Record type	Records
Highest daily maximum	177
Lowest daily maximum	90
Highest daily minimum	163
Lowest daily minimum	145
Heaviest daily rainfall	227
Heaviest daily snowfall	160
Deepest snow cover	180

Records on 20 November 1986 by timescale: all-time 0, monthly 50, daily 1,092.

How Much Records Were Beaten By

883 broken records

Margins by which the 883 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 229.0. Ties are not counted.

Top 20 by Significance

20 November 1986

Top 20 records on 20 November 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 November 1986	Dwtn Charleston, US	daily rain	50.0 mm (2.0 in)	36.0 mm (1.4 in)	84 years	62 of 100 (Major)
20 November 1986	Grundy Ctr, US	daily snowfall	16.5 cm (6.5 in)	11.4 cm (4.5 in)	90 years	59 of 100 (Notable)
20 November 1986	Taunton, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	92 years	57 of 100 (Notable)
20 November 1986	Darlington Wwtp, US	daily snow depth	17.8 cm (7.0 in)	12.7 cm (5.0 in)	56 years	56 of 100 (Notable)
20 November 1986	Corozal Substn, PR	daily rain	86.1 mm (3.4 in)	58.2 mm (2.3 in)	55 years	55 of 100 (Notable)
20 November 1986	Toledo 3N, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	90 years	55 of 100 (Notable)
20 November 1986	Johnstown, US	daily rain	53.3 mm (2.1 in)	33.2 mm (1.3 in)	21 years	55 of 100 (Notable)
20 November 1986	Mather 3 NW, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	75 years	55 of 100 (Notable)
20 November 1986	Prairie du Chien, US	daily snowfall	12.7 cm (5.0 in)	10.2 cm (4.0 in)	59 years	55 of 100 (Notable)
20 November 1986	Bindi, AU	daily rain	40.6 mm (1.6 in)	19.0 mm (0.7 in)	85 years	54 of 100 (Notable)
20 November 1986	Excelsior (Mun), ZA	daily rain	51.0 mm (2.0 in)	33.2 mm (1.3 in)	60 years	53 of 100 (Notable)
20 November 1986	Green Bay, US	daily snow depth	22.9 cm (9.0 in)	12.7 cm (5.0 in)	69 years	53 of 100 (Notable)
20 November 1986	Buxton (Bos), ZA	daily rain	90.5 mm (3.6 in)	45.5 mm (1.8 in)	16 years	51 of 100 (Notable)
20 November 1986	Allison, US	daily snow depth	27.9 cm (11.0 in)	15.2 cm (6.0 in)	48 years	51 of 100 (Notable)
20 November 1986	Anamosa 1 WNW, US	daily snow depth	12.7 cm (5.0 in)	10.2 cm (4.0 in)	27 years	51 of 100 (Notable)
20 November 1986	Moss Vale (Hoskins Street), AU	daily rain	67.4 mm (2.7 in)	27.8 mm (1.1 in)	52 years	50 of 100 (Notable)
20 November 1986	Newton, US	daily snowfall	10.2 cm (4.0 in)	6.4 cm (2.5 in)	90 years	50 of 100 (Notable)
20 November 1986	Forbes (Camp Street), AU	daily rain	33.6 mm (1.3 in)	10.5 mm (0.4 in)	94 years	49 of 100 (Notable)
20 November 1986	Mangochi, MW	daily rain	52.3 mm (2.1 in)	37.1 mm (1.5 in)	29 years	49 of 100 (Notable)
20 November 1986	Vinton, US	daily snow depth	22.9 cm (9.0 in)	17.8 cm (7.0 in)	13 years	49 of 100 (Notable)

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 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 1,142 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 1986-11-20: 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	739
50 to 100	96
100 to 150	32
150 to 200	14
200 to 250	2