Weather Records on 21 November 1984

525 weather records were set or tied worldwide on 21 November 1984. Highest significance: Dyer 5S, US.

Key Facts for 21 November 1984

On 21 November 1984, 525 weather records were set or tied at long-record stations worldwide.
39 were record highs and 277 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 16 monthly and 508 daily.
Dyer 5S set a daily record precipitation of 33.3 mm (1.3 in) on 21 November 1984.
Across 159 earlier years (1803 to 2025) the same calendar date averaged 449 records.

Record Map

525 stations

525 station records on 21 November 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 November 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dyer 5S	United States	Record daily precipitation	33.3 mm (1.3 in)	70 of 100 (Major)
Iliamna AP	United States	Record daily snowfall	26.2 cm (10.3 in)	57 of 100 (Notable)
Arcadia	United States	Record daily precipitation	51.3 mm (2.0 in)	55 of 100 (Notable)
Ft Pierce	United States	Record daily precipitation	93.0 mm (3.7 in)	55 of 100 (Notable)
Porto Firme	Brazil	Record daily precipitation	100.5 mm (4.0 in)	47 of 100 (Notable)
Puntilla	United States	Record daily snowfall	25.4 cm (10.0 in)	47 of 100 (Notable)
Congonhas-Montante	Brazil	Record daily precipitation	97.2 mm (3.8 in)	45 of 100 (Notable)
Ponte Nova Do Paraopeba	Brazil	Record daily precipitation	133.0 mm (5.2 in)	44 of 100 (Notable)
Bom Jesus Do Galho	Brazil	Record daily precipitation	74.0 mm (2.9 in)	43 of 100 (Notable)
Villahermosa (Dge)	Mexico	Record daily precipitation	158.8 mm (6.3 in)	43 of 100 (Notable)
Canal Pt USDA	United States	Record daily precipitation	101.6 mm (4.0 in)	41 of 100 (Notable)
Gulkana AP	United States	Record daily snowfall	16.3 cm (6.4 in)	41 of 100 (Notable)
Santana Do Jacare	Brazil	Record daily precipitation	78.0 mm (3.1 in)	40 of 100 (Notable)
San Lucas Ojitlan	Mexico	Record daily precipitation	79.8 mm (3.1 in)	40 of 100 (Notable)
Freehold-Marlboro	United States	Record low maximum temperature	1.1 C (34.0 F)	39 of 100 (Notable)
Bedford	United States	Record low maximum temperature	2.2 C (36.0 F)	38 of 100 (Notable)
Chapeu Duvas	Brazil	Record daily precipitation	65.3 mm (2.6 in)	34 of 100 (Routine)
Melbourne WFO	United States	Record daily precipitation	77.2 mm (3.0 in)	34 of 100 (Routine)
Somerville 4 NW	United States	Record low maximum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Canton	Mexico	Record daily precipitation	99.3 mm (3.9 in)	33 of 100 (Routine)
Liberty 1 NE	United States	Record low maximum temperature	-1.7 C (28.9 F)	33 of 100 (Routine)
Pormpuraaw Township	Australia	Record daily precipitation	62.0 mm (2.4 in)	32 of 100 (Routine)
Misantla	Mexico	Record daily precipitation	99.8 mm (3.9 in)	31 of 100 (Routine)
Masindi	Uganda	Record daily precipitation	31.5 mm (1.2 in)	31 of 100 (Routine)
Live Oak	United States	Record low maximum temperature	12.8 C (55.0 F)	31 of 100 (Routine)
Santa Cruz	United States	Record low maximum temperature	11.7 C (53.1 F)	30 of 100 (Routine)
Harlingen	United States	Record low maximum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Cachoeira Escura	Brazil	Record daily precipitation	77.1 mm (3.0 in)	29 of 100 (Routine)
Santa Maria Do Jetiba (Dnos)	Brazil	Record daily precipitation	69.2 mm (2.7 in)	29 of 100 (Routine)
Catalua	Mexico	Record daily precipitation	90.7 mm (3.6 in)	29 of 100 (Routine)
South Lake	United States	Record daily precipitation	31.5 mm (1.2 in)	29 of 100 (Routine)
Paoli	United States	Record low minimum temperature	-10.0 C (14.0 F)	29 of 100 (Routine)
Greenville	United States	Record low minimum temperature	-7.2 C (19.0 F)	29 of 100 (Routine)
New Holland	United States	Record low maximum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Brackettville	United States	Record low maximum temperature	11.7 C (53.1 F)	29 of 100 (Routine)
Marathon	United States	Record low maximum temperature	5.6 C (42.1 F)	29 of 100 (Routine)
Rio Grande City	United States	Record low maximum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Santa Maria Jacatepec	Mexico	Record daily precipitation	104.4 mm (4.1 in)	28 of 100 (Routine)
La Estrella	Mexico	Record daily precipitation	97.5 mm (3.8 in)	27 of 100 (Routine)
Fazenda Paraiso	Brazil	Record daily precipitation	60.4 mm (2.4 in)	26 of 100 (Routine)
Torreoes	Brazil	Record daily precipitation	42.4 mm (1.7 in)	26 of 100 (Routine)
Tancochapa	Mexico	Record daily precipitation	115.1 mm (4.5 in)	26 of 100 (Routine)
Marion	United States	Record low maximum temperature	7.8 C (46.0 F)	26 of 100 (Routine)
Carrizo Springs 3S	United States	Record low maximum temperature	8.3 C (46.9 F)	26 of 100 (Routine)
Sydney Airport AMO	Australia	Record high maximum temperature	35.1 C (95.2 F)	25 of 100 (Routine)
Careacu	Brazil	Record daily precipitation	45.3 mm (1.8 in)	25 of 100 (Routine)
Huautla de Jimenez	Mexico	Record daily precipitation	49.8 mm (2.0 in)	25 of 100 (Routine)
Xochiapa	Mexico	Record low maximum temperature	20.6 C (69.1 F)	25 of 100 (Routine)
Sanderson	United States	Record low maximum temperature	5.0 C (41.0 F)	25 of 100 (Routine)
Mt Wx	United States	Record low maximum temperature	-1.7 C (28.9 F)	25 of 100 (Routine)
Carlos Chagas	Brazil	Record daily precipitation	48.2 mm (1.9 in)	24 of 100 (Routine)
Zinapecuaro	Mexico	Record low minimum temperature	1.7 C (35.1 F)	24 of 100 (Routine)
Jess Valley	United States	Record snow depth	20.3 cm (8.0 in)	24 of 100 (Routine)
Falfurrias	United States	Record low maximum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
La Pryor	United States	Record low maximum temperature	8.3 C (46.9 F)	24 of 100 (Routine)
Garrafao (Dnos)	Brazil	Record daily precipitation	95.1 mm (3.7 in)	23 of 100 (Routine)
Iuna	Brazil	Record daily precipitation	69.6 mm (2.7 in)	23 of 100 (Routine)
Iguatama	Brazil	Record daily precipitation	48.4 mm (1.9 in)	23 of 100 (Routine)
Patrocinio Do Muriae	Brazil	Record daily precipitation	65.0 mm (2.6 in)	23 of 100 (Routine)
Colina	Brazil	Record daily precipitation	118.8 mm (4.7 in)	23 of 100 (Routine)

Counts by Type and Timescale

525 records

Records set or tied on 21 November 1984 by type: Highest daily maximum 19, Lowest daily maximum 189, Highest daily minimum 20, Lowest daily minimum 88, Heaviest daily rainfall 185, Heaviest daily snowfall 11, Deepest snow cover 13.

Records on 21 November 1984 by type
Record type	Records
Highest daily maximum	19
Lowest daily maximum	189
Highest daily minimum	20
Lowest daily minimum	88
Heaviest daily rainfall	185
Heaviest daily snowfall	11
Deepest snow cover	13

Records on 21 November 1984 by timescale: all-time 1, monthly 16, daily 508.

How Much Records Were Beaten By

397 broken records

Margins by which the 397 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 305.0. Ties are not counted.

Top 20 by Significance

21 November 1984

Top 20 records on 21 November 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 November 1984	Dyer 5S, US	daily rain	33.3 mm (1.3 in)	28.2 mm (1.1 in)	78 years	70 of 100 (Major)
21 November 1984	Iliamna AP, US	daily snowfall	26.2 cm (10.3 in)	19.1 cm (7.5 in)	39 years	57 of 100 (Notable)
21 November 1984	Arcadia, US	daily rain	51.3 mm (2.0 in)	37.8 mm (1.5 in)	72 years	55 of 100 (Notable)
21 November 1984	Ft Pierce, US	daily rain	93.0 mm (3.7 in)	65.1 mm (2.6 in)	25 years	55 of 100 (Notable)
21 November 1984	Porto Firme, BR	daily rain	100.5 mm (4.0 in)	60.3 mm (2.4 in)	18 years	47 of 100 (Notable)
21 November 1984	Puntilla, US	daily snowfall	25.4 cm (10.0 in)	14.0 cm (5.5 in)	41 years	47 of 100 (Notable)
21 November 1984	Congonhas-Montante, BR	daily rain	97.2 mm (3.8 in)	68.8 mm (2.7 in)	5 years	45 of 100 (Notable)
21 November 1984	Ponte Nova Do Paraopeba, BR	monthly rain	133.0 mm (5.2 in)	41.7 mm (1.6 in)	8 years	44 of 100 (Notable)
21 November 1984	Bom Jesus Do Galho, BR	daily rain	74.0 mm (2.9 in)	47.6 mm (1.9 in)	22 years	43 of 100 (Notable)
21 November 1984	Villahermosa (Dge), MX	daily rain	158.8 mm (6.3 in)	96.3 mm (3.8 in)	8 years	43 of 100 (Notable)
21 November 1984	Canal Pt USDA, US	monthly rain	101.6 mm (4.0 in)	25.9 mm (1.0 in)	6 years	41 of 100 (Notable)
21 November 1984	Gulkana AP, US	daily snowfall	16.3 cm (6.4 in)	10.5 cm (4.1 in)	27 years	41 of 100 (Notable)
21 November 1984	Santana Do Jacare, BR	daily rain	78.0 mm (3.1 in)	43.5 mm (1.7 in)	12 years	40 of 100 (Notable)
21 November 1984	San Lucas Ojitlan, MX	daily rain	79.8 mm (3.1 in)	46.5 mm (1.8 in)	26 years	40 of 100 (Notable)
21 November 1984	Freehold-Marlboro, US	daily low max	1.1 C (34.0 F)	1.7 C (3.1 F)	88 years	39 of 100 (Notable)
21 November 1984	Bedford, US	daily low max	2.2 C (36.0 F)	3.4 C (6.1 F)	81 years	38 of 100 (Notable)
21 November 1984	Chapeu Duvas, BR	daily rain	65.3 mm (2.6 in)	37.0 mm (1.5 in)	31 years	34 of 100 (Routine)
21 November 1984	Melbourne WFO, US	daily rain	77.2 mm (3.0 in)	42.4 mm (1.7 in)	25 years	34 of 100 (Routine)
21 November 1984	Somerville 4 NW, US	daily low max	1.7 C (35.1 F)	0.5 C (0.9 F)	81 years	34 of 100 (Routine)
21 November 1984	Canton, MX	daily rain	99.3 mm (3.9 in)	53.1 mm (2.1 in)	7 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

1803 to 1984

Records set or tied on this calendar date in each year from 1803 to 1984. 1984 had 525 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 1984-11-21: 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	381
50 to 100	11
100 to 150	3
150 to 200	1
200 to 250	0
250 to 300	0
300 to 350	1