Weather Records on 21 November 1986

815 weather records were set or tied worldwide on 21 November 1986. Highest significance: Idaho Falls 16 SE, US.

Key Facts for 21 November 1986

On 21 November 1986, 815 weather records were set or tied at long-record stations worldwide.
242 were record highs and 79 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 25 monthly and 789 daily.
Idaho Falls 16 SE set an all-time record daily precipitation of 53.3 mm (2.1 in) on 21 November 1986.
Across 159 earlier years (1803 to 2025) the same calendar date averaged 447 records.

Record Map

815 stations

815 station records on 21 November 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 November 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Idaho Falls 16 SE	United States	Record daily precipitation	53.3 mm (2.1 in)	68 of 100 (Major)
Kuilput	South Africa	Record daily precipitation	77.4 mm (3.0 in)	66 of 100 (Major)
Pedras de Abelhas (Dnocs)	Brazil	Record daily precipitation	30.2 mm (1.2 in)	59 of 100 (Notable)
Appleton	United States	Record snow depth	20.3 cm (8.0 in)	59 of 100 (Notable)
Ellenburg Depot	United States	Record daily snowfall	30.5 cm (12.0 in)	58 of 100 (Notable)
Allison	United States	Record snow depth	27.9 cm (11.0 in)	56 of 100 (Notable)
Mt Carmel	United States	Record daily precipitation	91.9 mm (3.6 in)	55 of 100 (Notable)
Givhans Ferry 2 ESE	United States	Record daily precipitation	68.6 mm (2.7 in)	54 of 100 (Notable)
Ogdensburg 4 NE	United States	Record snow depth	12.7 cm (5.0 in)	53 of 100 (Notable)
Rochester	United States	Record daily snowfall	30.5 cm (12.0 in)	52 of 100 (Notable)
Port Heiden	United States	Record daily precipitation	26.2 mm (1.0 in)	51 of 100 (Notable)
Albany 3 SE	United States	Record daily precipitation	54.9 mm (2.2 in)	50 of 100 (Notable)
Winburg (Pol)	South Africa	Record daily precipitation	30.0 mm (1.2 in)	49 of 100 (Notable)
Vinton	United States	Record snow depth	22.9 cm (9.0 in)	49 of 100 (Notable)
Peru 2 WSW	United States	Record daily snowfall	22.9 cm (9.0 in)	49 of 100 (Notable)
Tweespruit	South Africa	Record daily precipitation	90.5 mm (3.6 in)	47 of 100 (Notable)
Saint Johnsbury	United States	Record daily snowfall	23.4 cm (9.2 in)	47 of 100 (Notable)
Stevenson Dam	United States	Record daily precipitation	87.1 mm (3.4 in)	45 of 100 (Notable)
Cascade	United States	Record snow depth	17.8 cm (7.0 in)	45 of 100 (Notable)
Elizabethtown	United States	Record daily snowfall	25.4 cm (10.0 in)	45 of 100 (Notable)
Mt Morris 2W	United States	Record daily snowfall	5.1 cm (2.0 in)	45 of 100 (Notable)
Cascadia	United States	Record daily precipitation	50.8 mm (2.0 in)	45 of 100 (Notable)
Ebenezer (Weltevrede)	South Africa	Record daily precipitation	25.0 mm (1.0 in)	44 of 100 (Notable)
Dublin	United States	Record daily precipitation	26.9 mm (1.1 in)	44 of 100 (Notable)
Dubuque L&D 11	United States	Record snow depth	20.3 cm (8.0 in)	44 of 100 (Notable)
Petersham 3 N	United States	Record daily precipitation	52.1 mm (2.1 in)	44 of 100 (Notable)
Caribou WFO	United States	Record daily snowfall	53.1 cm (20.9 in)	44 of 100 (Notable)
Pot-the-Red	South Africa	Record daily precipitation	38.0 mm (1.5 in)	43 of 100 (Notable)
Beaver Falls	United States	Record daily snowfall	25.4 cm (10.0 in)	43 of 100 (Notable)
Rowlesburg 1	United States	Record daily precipitation	27.7 mm (1.1 in)	43 of 100 (Notable)
Portage Wwtp	United States	Record snow depth	15.2 cm (6.0 in)	43 of 100 (Notable)
Farmington	United States	Record daily snowfall	15.2 cm (6.0 in)	42 of 100 (Notable)
N Creek 5 SE	United States	Record daily snowfall	19.1 cm (7.5 in)	41 of 100 (Notable)
Wauseon Wtp	United States	Record daily snowfall	6.4 cm (2.5 in)	41 of 100 (Notable)
Cornwall	United States	Record snow depth	15.2 cm (6.0 in)	41 of 100 (Notable)
Springvalley	South Africa	Record daily precipitation	38.5 mm (1.5 in)	40 of 100 (Notable)
Mansfield Hollow Lake	United States	Record daily precipitation	57.7 mm (2.3 in)	40 of 100 (Notable)
Madera 2 SE	United States	Record daily precipitation	32.0 mm (1.3 in)	40 of 100 (Notable)
Cornwall	United States	Record daily snowfall	15.2 cm (6.0 in)	40 of 100 (Notable)
Middletown 4 W	United States	Record daily precipitation	71.6 mm (2.8 in)	39 of 100 (Notable)
Storrs	United States	Record daily precipitation	58.4 mm (2.3 in)	39 of 100 (Notable)
Lawrence	United States	Record daily precipitation	56.1 mm (2.2 in)	38 of 100 (Notable)
Ogdensburg 4 NE	United States	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Charters Towers Post Office	Australia	Record low minimum temperature	14.0 C (57.2 F)	37 of 100 (Notable)
Airi (Rochedo)	Brazil	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Green Bay	United States	Record snow depth	15.2 cm (6.0 in)	37 of 100 (Notable)
Waterford	South Africa	Record daily precipitation	44.5 mm (1.8 in)	36 of 100 (Notable)
Lowell	United States	Record low minimum temperature	-11.1 C (12.0 F)	36 of 100 (Notable)
Caribou WFO	United States	Record daily precipitation	51.1 mm (2.0 in)	36 of 100 (Notable)
Berlin 91	South Africa	Record daily precipitation	34.0 mm (1.3 in)	35 of 100 (Notable)
Madrid	South Africa	Record daily precipitation	48.8 mm (1.9 in)	35 of 100 (Notable)
Britt 3E	United States	Record snow depth	22.9 cm (9.0 in)	35 of 100 (Notable)
Forest City 2 NNE	United States	Record snow depth	27.9 cm (11.0 in)	35 of 100 (Notable)
Summerville 4W	United States	Record daily precipitation	52.8 mm (2.1 in)	35 of 100 (Notable)
Cavendish	United States	Record daily snowfall	20.3 cm (8.0 in)	35 of 100 (Notable)
Albright	United States	Record daily precipitation	25.4 mm (1.0 in)	35 of 100 (Notable)
Mauston 1 SE	United States	Record snow depth	15.2 cm (6.0 in)	35 of 100 (Notable)
New London	United States	Record snow depth	17.8 cm (7.0 in)	35 of 100 (Notable)
Eagle	United States	Record low minimum temperature	-44.4 C (-47.9 F)	35 of 100 (Notable)
Kainaliu 73.2	United States	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)

Counts by Type and Timescale

815 records

Records set or tied on 21 November 1986 by type: Highest daily maximum 123, Lowest daily maximum 37, Highest daily minimum 119, Lowest daily minimum 42, Heaviest daily rainfall 290, Heaviest daily snowfall 61, Deepest snow cover 143.

Records on 21 November 1986 by type
Record type	Records
Highest daily maximum	123
Lowest daily maximum	37
Highest daily minimum	119
Lowest daily minimum	42
Heaviest daily rainfall	290
Heaviest daily snowfall	61
Deepest snow cover	143

Records on 21 November 1986 by timescale: all-time 1, monthly 25, daily 789.

How Much Records Were Beaten By

621 broken records

Margins by which the 621 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

21 November 1986

Top 20 records on 21 November 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 November 1986	Idaho Falls 16 SE, US	all-time rain	53.3 mm (2.1 in)	17.7 mm (0.7 in)	17 years	68 of 100 (Major)
21 November 1986	Kuilput, ZA	daily rain	77.4 mm (3.0 in)	43.9 mm (1.7 in)	64 years	66 of 100 (Major)
21 November 1986	Pedras de Abelhas (Dnocs), BR	daily rain	30.2 mm (1.2 in)	30.2 mm (1.2 in)	75 years	59 of 100 (Notable)
21 November 1986	Appleton, US	daily snow depth	20.3 cm (8.0 in)	15.2 cm (6.0 in)	57 years	59 of 100 (Notable)
21 November 1986	Ellenburg Depot, US	daily snowfall	30.5 cm (12.0 in)	22.9 cm (9.0 in)	36 years	58 of 100 (Notable)
21 November 1986	Allison, US	daily snow depth	27.9 cm (11.0 in)	17.7 cm (7.0 in)	48 years	56 of 100 (Notable)
21 November 1986	Mt Carmel, US	daily rain	91.9 mm (3.6 in)	56.8 mm (2.2 in)	36 years	55 of 100 (Notable)
21 November 1986	Givhans Ferry 2 ESE, US	daily rain	68.6 mm (2.7 in)	59.5 mm (2.3 in)	36 years	54 of 100 (Notable)
21 November 1986	Ogdensburg 4 NE, US	daily snow depth	12.7 cm (5.0 in)	7.6 cm (3.0 in)	84 years	53 of 100 (Notable)
21 November 1986	Rochester, US	daily snowfall	30.5 cm (12.0 in)	22.9 cm (9.0 in)	24 years	52 of 100 (Notable)
21 November 1986	Port Heiden, US	daily rain	26.2 mm (1.0 in)	15.0 mm (0.6 in)	36 years	51 of 100 (Notable)
21 November 1986	Albany 3 SE, US	daily rain	54.9 mm (2.2 in)	28.2 mm (1.1 in)	79 years	50 of 100 (Notable)
21 November 1986	Winburg (Pol), ZA	daily rain	30.0 mm (1.2 in)	12.2 mm (0.5 in)	96 years	49 of 100 (Notable)
21 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)
21 November 1986	Peru 2 WSW, US	daily snowfall	22.9 cm (9.0 in)	17.8 cm (7.0 in)	31 years	49 of 100 (Notable)
21 November 1986	Tweespruit, ZA	monthly rain	90.5 mm (3.6 in)	20.4 mm (0.8 in)	41 years	47 of 100 (Notable)
21 November 1986	Saint Johnsbury, US	daily snowfall	23.4 cm (9.2 in)	6.9 cm (2.7 in)	89 years	47 of 100 (Notable)
21 November 1986	Stevenson Dam, US	daily rain	87.1 mm (3.4 in)	39.6 mm (1.6 in)	36 years	45 of 100 (Notable)
21 November 1986	Cascade, US	daily snow depth	17.8 cm (7.0 in)	15.3 cm (6.0 in)	21 years	45 of 100 (Notable)
21 November 1986	Elizabethtown, US	daily snowfall	25.4 cm (10.0 in)	17.8 cm (7.0 in)	31 years	45 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

1803 to 1986

Records set or tied on this calendar date in each year from 1803 to 1986. 1986 had 815 records.

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

Records on 11-21 in each year
Year	Records
1803	1
1816	2
1821	2
1829	1
1835	1
1839	1
1844	1
1847	1
1855	1
1856	1
1857	1
1858	4
1866	1
1868	1
1870	2
1871	2
1872	1
1873	2
1874	1
1876	2
1879	4
1880	4
1881	1
1882	1
1883	3
1887	3
1889	1
1890	7
1893	1
1894	4
1896	1
1897	4
1898	3
1899	4
1900	7
1901	5
1902	7
1903	5
1904	9
1905	3
1906	14
1907	7
1908	9
1909	18
1910	23
1911	19
1912	14
1913	79
1914	51
1915	21
1916	66
1917	248
1918	12
1919	22
1920	36
1921	96
1922	42
1923	27
1924	104
1925	73
1926	420
1927	108
1928	109
1929	467
1930	243
1931	682
1932	162
1933	381
1934	578
1935	62
1936	192
1937	1,309
1938	119
1939	303
1940	337
1941	329
1942	662
1943	212
1944	250
1945	308
1946	604
1947	540
1948	414
1949	588
1950	904
1951	605
1952	424
1953	408
1954	927
1955	419
1956	624
1957	442
1958	407
1959	460
1960	691
1961	738
1962	524
1963	601
1964	1,014
1965	448
1966	589
1967	336
1968	358
1969	611
1970	400
1971	514
1972	735
1973	1,100
1974	809
1975	548
1976	315
1977	1,313
1978	1,034
1979	1,409
1980	805
1981	939
1982	807
1983	1,066
1984	525
1985	1,808
1986	815
1987	949
1988	928
1989	797
1990	1,337
1991	944
1992	1,375
1993	1,413
1994	1,179
1995	1,084
1996	1,882
1997	449
1998	1,312
1999	920
2000	1,191
2001	811
2002	847
2003	1,007
2004	873
2005	491
2006	1,181
2007	936
2008	1,079
2009	1,131
2010	894
2011	944
2012	792
2013	543
2014	815
2015	785
2016	1,000
2017	687
2018	391
2019	653
2020	421
2021	296
2022	824
2023	584
2024	519
2025	745

Download the Data

Data for records on 1986-11-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 50	539
50 to 100	54
100 to 150	14
150 to 200	11
200 to 250	3