Weather Records on 21 October 1984

1,872 weather records were set or tied worldwide on 21 October 1984. Highest significance: Alexandria, US.

Key Facts for 21 October 1984

On 21 October 1984, 1,872 weather records were set or tied at long-record stations worldwide.
566 were record highs and 561 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 41 monthly and 1,829 daily.
Alexandria set a daily record precipitation of 141.0 mm (5.6 in) on 21 October 1984.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 411 records.

Record Map

1,872 stations

1,872 station records on 21 October 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Alexandria	United States	Record daily precipitation	141.0 mm (5.6 in)	75 of 100 (Major)
Grand Cane Fire Twr	United States	Record daily precipitation	66.5 mm (2.6 in)	67 of 100 (Major)
Doniphan	United States	Record daily precipitation	78.0 mm (3.1 in)	65 of 100 (Major)
Williamsville	United States	Record daily precipitation	67.1 mm (2.6 in)	58 of 100 (Notable)
Angleton 2 W	United States	Record daily precipitation	270.5 mm (10.6 in)	58 of 100 (Notable)
Fletcher Vale Station	Australia	Record daily precipitation	43.2 mm (1.7 in)	57 of 100 (Notable)
Valmora	United States	Record daily snowfall	15.2 cm (6.0 in)	56 of 100 (Notable)
Saint Francis	United States	Record daily precipitation	71.1 mm (2.8 in)	55 of 100 (Notable)
Zalma 4 E	United States	Record daily precipitation	71.6 mm (2.8 in)	55 of 100 (Notable)
Chama	United States	Record snow depth	33.0 cm (13.0 in)	55 of 100 (Notable)
Groveton	United States	Record daily precipitation	116.3 mm (4.6 in)	54 of 100 (Notable)
Taylor	United States	Record daily precipitation	104.1 mm (4.1 in)	54 of 100 (Notable)
Guffey 10 SE	United States	Record snow depth	20.3 cm (8.0 in)	53 of 100 (Notable)
Calhoun 2 N	United States	Record daily precipitation	61.7 mm (2.4 in)	53 of 100 (Notable)
Greenville 6 N	United States	Record daily precipitation	65.0 mm (2.6 in)	53 of 100 (Notable)
Elizabeth	United States	Record daily precipitation	186.7 mm (7.4 in)	52 of 100 (Notable)
Leesville	United States	Record daily precipitation	119.1 mm (4.7 in)	52 of 100 (Notable)
Rolling Fk	United States	Record daily precipitation	91.4 mm (3.6 in)	52 of 100 (Notable)
Monticello	United States	Record daily precipitation	41.1 mm (1.6 in)	51 of 100 (Notable)
Three Rivers	United States	Record daily precipitation	40.1 mm (1.6 in)	51 of 100 (Notable)
Madisonville	United States	Record daily precipitation	91.4 mm (3.6 in)	51 of 100 (Notable)
Koosharem	United States	Record daily snowfall	7.6 cm (3.0 in)	51 of 100 (Notable)
Dexter	United States	Record daily precipitation	70.6 mm (2.8 in)	50 of 100 (Notable)
Los Alamos	United States	Record daily snowfall	15.2 cm (6.0 in)	50 of 100 (Notable)
Huntsville	United States	Record daily precipitation	81.8 mm (3.2 in)	50 of 100 (Notable)
Galveston	United States	Record daily precipitation	96.8 mm (3.8 in)	50 of 100 (Notable)
Stensele	Sweden	Record snow depth	28.0 cm (11.0 in)	49 of 100 (Notable)
Corning	United States	Record daily precipitation	65.5 mm (2.6 in)	49 of 100 (Notable)
Jasper	United States	Record daily precipitation	90.2 mm (3.6 in)	49 of 100 (Notable)
Placerville 3SE	United States	Record snow depth	35.6 cm (14.0 in)	49 of 100 (Notable)
Fredericktown	United States	Record daily precipitation	65.0 mm (2.6 in)	49 of 100 (Notable)
Advance 1 S	United States	Record daily precipitation	71.9 mm (2.8 in)	49 of 100 (Notable)
Natchitoches	United States	Record daily precipitation	77.7 mm (3.1 in)	48 of 100 (Notable)
Port Gibson 1 NE	United States	Record daily precipitation	105.4 mm (4.1 in)	48 of 100 (Notable)
Parma	United States	Record daily precipitation	56.1 mm (2.2 in)	48 of 100 (Notable)
Hart Mtn Refuge	United States	Record snow depth	10.2 cm (4.0 in)	48 of 100 (Notable)
Snake Creek Powerhouse	United States	Record snow depth	45.7 cm (18.0 in)	48 of 100 (Notable)
Conroe	United States	Record daily precipitation	54.1 mm (2.1 in)	47 of 100 (Notable)
Grapevine Dam	United States	Record daily precipitation	46.7 mm (1.8 in)	47 of 100 (Notable)
Habarovsk	Russia	Record daily precipitation	35.9 mm (1.4 in)	46 of 100 (Notable)
Evening Shade 1 NNE	United States	Record daily precipitation	61.5 mm (2.4 in)	46 of 100 (Notable)
Stamps	United States	Record daily precipitation	55.9 mm (2.2 in)	46 of 100 (Notable)
1 N McLeansboro	United States	Record daily precipitation	75.7 mm (3.0 in)	46 of 100 (Notable)
Snake Rvr	United States	Record low minimum temperature	-21.7 C (-7.1 F)	46 of 100 (Notable)
Vestmannaeyjar	Iceland	Record daily precipitation	67.9 mm (2.7 in)	45 of 100 (Notable)
Mtn View	United States	Record daily precipitation	69.1 mm (2.7 in)	45 of 100 (Notable)
De Ridder	United States	Record daily precipitation	121.4 mm (4.8 in)	45 of 100 (Notable)
Natchez	United States	Record daily precipitation	215.4 mm (8.5 in)	45 of 100 (Notable)
Nitta Yuma	United States	Record daily precipitation	88.9 mm (3.5 in)	45 of 100 (Notable)
Rockport	United States	Record daily precipitation	78.2 mm (3.1 in)	45 of 100 (Notable)
Marble Hill	United States	Record daily precipitation	80.3 mm (3.2 in)	45 of 100 (Notable)
Benbrook Dam	United States	Record daily precipitation	75.2 mm (3.0 in)	45 of 100 (Notable)
Burleson 2 SSW	United States	Record daily precipitation	83.1 mm (3.3 in)	45 of 100 (Notable)
Burnet	United States	Record daily precipitation	50.8 mm (2.0 in)	45 of 100 (Notable)
Lipan 4NW	United States	Record daily precipitation	83.6 mm (3.3 in)	45 of 100 (Notable)
Mena	United States	Record daily precipitation	111.0 mm (4.4 in)	44 of 100 (Notable)
Marion 4 NNE	United States	Record daily precipitation	61.2 mm (2.4 in)	44 of 100 (Notable)
Canton 4N	United States	Record daily precipitation	69.9 mm (2.8 in)	44 of 100 (Notable)
Kosciusko	United States	Record daily precipitation	55.9 mm (2.2 in)	44 of 100 (Notable)
Puxico 1 SE	United States	Record daily precipitation	65.3 mm (2.6 in)	44 of 100 (Notable)

Counts by Type and Timescale

1,872 records

Records set or tied on 21 October 1984 by type: Highest daily maximum 220, Lowest daily maximum 393, Highest daily minimum 346, Lowest daily minimum 168, Heaviest daily rainfall 609, Heaviest daily snowfall 59, Deepest snow cover 77.

Records on 21 October 1984 by type
Record type	Records
Highest daily maximum	220
Lowest daily maximum	393
Highest daily minimum	346
Lowest daily minimum	168
Heaviest daily rainfall	609
Heaviest daily snowfall	59
Deepest snow cover	77

Records on 21 October 1984 by timescale: all-time 2, monthly 41, daily 1,829.

How Much Records Were Beaten By

1,518 broken records

Margins by which the 1,518 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

21 October 1984

Top 20 records on 21 October 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1984	Alexandria, US	daily rain	141.0 mm (5.6 in)	118.9 mm (4.7 in)	87 years	75 of 100 (Major)
21 October 1984	Grand Cane Fire Twr, US	daily rain	66.5 mm (2.6 in)	65.2 mm (2.6 in)	74 years	67 of 100 (Major)
21 October 1984	Doniphan, US	daily rain	78.0 mm (3.1 in)	55.1 mm (2.2 in)	65 years	65 of 100 (Major)
21 October 1984	Williamsville, US	daily rain	67.1 mm (2.6 in)	59.2 mm (2.3 in)	55 years	58 of 100 (Notable)
21 October 1984	Angleton 2 W, US	monthly rain	270.5 mm (10.6 in)	41.9 mm (1.6 in)	70 years	58 of 100 (Notable)
21 October 1984	Fletcher Vale Station, AU	daily rain	43.2 mm (1.7 in)	43.2 mm (1.7 in)	44 years	57 of 100 (Notable)
21 October 1984	Valmora, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	67 years	56 of 100 (Notable)
21 October 1984	Saint Francis, US	daily rain	71.1 mm (2.8 in)	55.4 mm (2.2 in)	39 years	55 of 100 (Notable)
21 October 1984	Zalma 4 E, US	daily rain	71.6 mm (2.8 in)	63.5 mm (2.5 in)	39 years	55 of 100 (Notable)
21 October 1984	Chama, US	daily snow depth	33.0 cm (13.0 in)	20.3 cm (8.0 in)	64 years	55 of 100 (Notable)
21 October 1984	Groveton, US	daily rain	116.3 mm (4.6 in)	106.1 mm (4.2 in)	27 years	54 of 100 (Notable)
21 October 1984	Taylor, US	daily rain	104.1 mm (4.1 in)	74.6 mm (2.9 in)	36 years	54 of 100 (Notable)
21 October 1984	Guffey 10 SE, US	daily snow depth	20.3 cm (8.0 in)	20.3 cm (8.0 in)	34 years	53 of 100 (Notable)
21 October 1984	Calhoun 2 N, US	daily rain	61.7 mm (2.4 in)	42.1 mm (1.7 in)	84 years	53 of 100 (Notable)
21 October 1984	Greenville 6 N, US	daily rain	65.0 mm (2.6 in)	54.3 mm (2.1 in)	35 years	53 of 100 (Notable)
21 October 1984	Elizabeth, US	daily rain	186.7 mm (7.4 in)	160.0 mm (6.3 in)	22 years	52 of 100 (Notable)
21 October 1984	Leesville, US	daily rain	119.1 mm (4.7 in)	88.9 mm (3.5 in)	15 years	52 of 100 (Notable)
21 October 1984	Rolling Fk, US	daily rain	91.4 mm (3.6 in)	71.3 mm (2.8 in)	28 years	52 of 100 (Notable)
21 October 1984	Monticello, US	daily rain	41.1 mm (1.6 in)	26.1 mm (1.0 in)	74 years	51 of 100 (Notable)
21 October 1984	Three Rivers, US	daily rain	40.1 mm (1.6 in)	26.4 mm (1.0 in)	48 years	51 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

1795 to 1984

Records set or tied on this calendar date in each year from 1795 to 1984. 1984 had 1,872 records.

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

Records on 10-21 in each year
Year	Records
1795	1
1802	2
1805	1
1808	1
1810	1
1834	1
1835	1
1840	1
1845	1
1847	1
1850	1
1851	2
1854	1
1859	1
1863	1
1864	1
1866	3
1867	1
1868	3
1869	2
1871	1
1872	1
1873	1
1874	1
1876	4
1877	2
1878	1
1880	3
1881	1
1883	1
1886	1
1888	2
1889	2
1890	3
1891	6
1892	6
1893	1
1894	1
1895	2
1896	5
1898	6
1899	3
1900	2
1901	9
1902	2
1903	3
1904	30
1905	15
1906	11
1907	35
1908	35
1909	19
1910	21
1911	10
1912	18
1913	59
1914	35
1915	43
1916	70
1917	208
1918	18
1919	102
1920	149
1921	58
1922	78
1923	81
1924	389
1925	150
1926	77
1927	187
1928	78
1929	200
1930	492
1931	217
1932	165
1933	733
1934	407
1935	707
1936	407
1937	132
1938	121
1939	491
1940	537
1941	644
1942	258
1943	421
1944	367
1945	538
1946	297
1947	977
1948	266
1949	1,015
1950	438
1951	382
1952	848
1953	1,579
1954	279
1955	481
1956	276
1957	511
1958	322
1959	410
1960	408
1961	553
1962	359
1963	725
1964	457
1965	465
1966	425
1967	472
1968	174
1969	881
1970	548
1971	498
1972	813
1973	464
1974	866
1975	509
1976	1,467
1977	451
1978	616
1979	1,958
1980	378
1981	667
1982	870
1983	786
1984	1,872
1985	776
1986	814
1987	852
1988	696
1989	1,668
1990	807
1991	877
1992	1,095
1993	845
1994	670
1995	1,120
1996	1,581
1997	915
1998	711
1999	688
2000	771
2001	610
2002	1,241
2003	2,066
2004	1,674
2005	949
2006	1,057
2007	916
2008	610
2009	713
2010	710
2011	662
2012	703
2013	440
2014	716
2015	493
2016	734
2017	750
2018	440
2019	757
2020	1,135
2021	574
2022	629
2023	890
2024	1,138
2025	364

Download the Data

Data for records on 1984-10-21: 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	1,423
50 to 100	67
100 to 150	15
150 to 200	8
200 to 250	2
250 to 300	1
300 to 350	1
350 to 400	1