Weather Records on 20 October 1984

1,562 weather records were set or tied worldwide on 20 October 1984. Highest significance: Poplar 2 E, US.

Key Facts for 20 October 1984

On 20 October 1984, 1,562 weather records were set or tied at long-record stations worldwide.
530 were record highs and 421 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 22 monthly and 1,540 daily.
Poplar 2 E set a daily record snowfall of 15.2 cm (6.0 in) on 20 October 1984.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 450 records.

Record Map

1,562 stations

1,562 station records on 20 October 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Poplar 2 E	United States	Record daily snowfall	15.2 cm (6.0 in)	71 of 100 (Major)
Poteau	United States	Record daily precipitation	98.3 mm (3.9 in)	61 of 100 (Major)
Port O'Connor	United States	Record daily precipitation	309.9 mm (12.2 in)	60 of 100 (Major)
Fletcher Vale Station	Australia	Record daily precipitation	44.8 mm (1.8 in)	58 of 100 (Notable)
Killdeer 8 NW	United States	Record daily snowfall	7.6 cm (3.0 in)	58 of 100 (Notable)
Sao Joao de Petropolis	Brazil	Record daily precipitation	133.0 mm (5.2 in)	54 of 100 (Notable)
Guffey 10 SE	United States	Record snow depth	22.9 cm (9.0 in)	53 of 100 (Notable)
Placerville 3SE	United States	Record snow depth	50.8 cm (20.0 in)	53 of 100 (Notable)
Anna 4 N	United States	Record daily precipitation	52.1 mm (2.1 in)	52 of 100 (Notable)
Assarai-Montante	Brazil	Record daily precipitation	69.8 mm (2.7 in)	51 of 100 (Notable)
Mudanjiang	China	Record daily precipitation	26.7 mm (1.1 in)	51 of 100 (Notable)
Jackson	United States	Record daily precipitation	50.3 mm (2.0 in)	51 of 100 (Notable)
Fredericksburg	United States	Record daily precipitation	74.7 mm (2.9 in)	51 of 100 (Notable)
McAlester Rgnl AP	United States	Record daily precipitation	105.2 mm (4.1 in)	51 of 100 (Notable)
Bailey	United States	Record snow depth	25.4 cm (10.0 in)	50 of 100 (Notable)
Bay City Wtr Wks	United States	Record daily precipitation	101.6 mm (4.0 in)	49 of 100 (Notable)
Kassler	United States	Record snow depth	17.8 cm (7.0 in)	48 of 100 (Notable)
Ofahoma	United States	Record daily precipitation	100.3 mm (3.9 in)	48 of 100 (Notable)
Wells	United States	Record daily snowfall	5.3 cm (2.1 in)	48 of 100 (Notable)
Hart Mtn Refuge	United States	Record snow depth	10.2 cm (4.0 in)	48 of 100 (Notable)
Carthage	United States	Record daily precipitation	57.9 mm (2.3 in)	48 of 100 (Notable)
Sinton	United States	Record daily precipitation	233.7 mm (9.2 in)	48 of 100 (Notable)
Snake Creek Powerhouse	United States	Record snow depth	48.3 cm (19.0 in)	48 of 100 (Notable)
Waurika	United States	Record daily precipitation	52.6 mm (2.1 in)	47 of 100 (Notable)
Santa Leopoldina (Dnos)	Brazil	Record daily precipitation	99.0 mm (3.9 in)	46 of 100 (Notable)
Sarna	Sweden	Record daily precipitation	28.5 mm (1.1 in)	46 of 100 (Notable)
Jonesboro 3 SSE	United States	Record daily precipitation	60.5 mm (2.4 in)	46 of 100 (Notable)
Grand Lake 1 NW	United States	Record snow depth	15.2 cm (6.0 in)	46 of 100 (Notable)
Bedias	United States	Record daily precipitation	127.0 mm (5.0 in)	46 of 100 (Notable)
Charters Towers Post Office	Australia	Record daily precipitation	44.6 mm (1.8 in)	45 of 100 (Notable)
Epping	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Yanji	China	Record daily precipitation	34.5 mm (1.4 in)	44 of 100 (Notable)
Parker 6 E	United States	Record snow depth	20.3 cm (8.0 in)	44 of 100 (Notable)
Batesville Lvstk	United States	Record daily precipitation	67.3 mm (2.6 in)	43 of 100 (Notable)
Lead Hill	United States	Record daily precipitation	56.9 mm (2.2 in)	43 of 100 (Notable)
Rockport	United States	Record daily precipitation	108.2 mm (4.3 in)	43 of 100 (Notable)
W Plains	United States	Record daily precipitation	55.9 mm (2.2 in)	43 of 100 (Notable)
Carangola	Brazil	Record daily precipitation	62.4 mm (2.5 in)	42 of 100 (Notable)
Alicia 2 NNE	United States	Record daily precipitation	62.5 mm (2.5 in)	42 of 100 (Notable)
Fayetteville Exp STN	United States	Record daily precipitation	50.5 mm (2.0 in)	42 of 100 (Notable)
Yellville 4 N	United States	Record daily precipitation	71.1 mm (2.8 in)	42 of 100 (Notable)
Castle Rock	United States	Record low maximum temperature	1.7 C (35.1 F)	42 of 100 (Notable)
Texarkana Webb Fld	United States	Record daily precipitation	56.4 mm (2.2 in)	42 of 100 (Notable)
Atilio Vivacqua	Brazil	Record daily precipitation	75.0 mm (3.0 in)	41 of 100 (Notable)
Pocahontas 1	United States	Record daily precipitation	61.7 mm (2.4 in)	41 of 100 (Notable)
Du Quoin 4 SE	United States	Record daily precipitation	76.2 mm (3.0 in)	41 of 100 (Notable)
Mtn Dell Dam	United States	Record snow depth	25.4 cm (10.0 in)	41 of 100 (Notable)
Mc Henry 3W	United States	Record daily snowfall	7.6 cm (3.0 in)	40 of 100 (Notable)
Allardt	United States	Record daily precipitation	58.9 mm (2.3 in)	40 of 100 (Notable)
Cairo 3N	United States	Record daily precipitation	27.4 mm (1.1 in)	40 of 100 (Notable)
Van Buren 1 NE	United States	Record daily precipitation	71.1 mm (2.8 in)	39 of 100 (Notable)
Mc Minnville	United States	Record low maximum temperature	8.9 C (48.0 F)	39 of 100 (Notable)
Van	Turkey	Record low minimum temperature	-7.5 C (18.5 F)	38 of 100 (Notable)
Jessieville	United States	Record daily precipitation	94.0 mm (3.7 in)	38 of 100 (Notable)
Wilton	United States	Record daily snowfall	7.6 cm (3.0 in)	38 of 100 (Notable)
Crossville Ed & Rsch STN	United States	Record daily precipitation	40.1 mm (1.6 in)	38 of 100 (Notable)
Shreveport	United States	Record daily precipitation	66.5 mm (2.6 in)	38 of 100 (Notable)
Guacui	Brazil	Record daily precipitation	87.8 mm (3.5 in)	37 of 100 (Notable)
Sao Jose Do Calcado	Brazil	Record daily precipitation	68.8 mm (2.7 in)	37 of 100 (Notable)
Storbron	Sweden	Record daily precipitation	32.1 mm (1.3 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,562 records

Records set or tied on 20 October 1984 by type: Highest daily maximum 194, Lowest daily maximum 291, Highest daily minimum 336, Lowest daily minimum 130, Heaviest daily rainfall 439, Heaviest daily snowfall 73, Deepest snow cover 99.

Records on 20 October 1984 by type
Record type	Records
Highest daily maximum	194
Lowest daily maximum	291
Highest daily minimum	336
Lowest daily minimum	130
Heaviest daily rainfall	439
Heaviest daily snowfall	73
Deepest snow cover	99

Records on 20 October 1984 by timescale: all-time 0, monthly 22, daily 1,540.

How Much Records Were Beaten By

1,245 broken records

Margins by which the 1,245 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 508.0. Ties are not counted.

Top 20 by Significance

20 October 1984

Top 20 records on 20 October 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 1984	Poplar 2 E, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	87 years	71 of 100 (Major)
20 October 1984	Poteau, US	daily rain	98.3 mm (3.9 in)	75.4 mm (3.0 in)	51 years	61 of 100 (Major)
20 October 1984	Port O'Connor, US	monthly rain	309.9 mm (12.2 in)	132.9 mm (5.2 in)	25 years	60 of 100 (Major)
20 October 1984	Fletcher Vale Station, AU	daily rain	44.8 mm (1.8 in)	44.8 mm (1.8 in)	44 years	58 of 100 (Notable)
20 October 1984	Killdeer 8 NW, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	87 years	58 of 100 (Notable)
20 October 1984	Sao Joao de Petropolis, BR	monthly rain	133.0 mm (5.2 in)	70.2 mm (2.8 in)	5 years	54 of 100 (Notable)
20 October 1984	Guffey 10 SE, US	daily snow depth	22.9 cm (9.0 in)	22.9 cm (9.0 in)	34 years	53 of 100 (Notable)
20 October 1984	Placerville 3SE, US	daily snow depth	50.8 cm (20.0 in)	50.8 cm (20.0 in)	36 years	53 of 100 (Notable)
20 October 1984	Anna 4 N, US	daily rain	52.1 mm (2.1 in)	29.7 mm (1.2 in)	85 years	52 of 100 (Notable)
20 October 1984	Assarai-Montante, BR	daily rain	69.8 mm (2.7 in)	47.3 mm (1.9 in)	38 years	51 of 100 (Notable)
20 October 1984	Mudanjiang, CN	daily rain	26.7 mm (1.1 in)	21.2 mm (0.8 in)	29 years	51 of 100 (Notable)
20 October 1984	Jackson, US	daily rain	50.3 mm (2.0 in)	30.5 mm (1.2 in)	75 years	51 of 100 (Notable)
20 October 1984	Fredericksburg, US	daily rain	74.7 mm (2.9 in)	43.5 mm (1.7 in)	74 years	51 of 100 (Notable)
20 October 1984	McAlester Rgnl AP, US	daily rain	105.2 mm (4.1 in)	51.6 mm (2.0 in)	76 years	51 of 100 (Notable)
20 October 1984	Bailey, US	daily snow depth	25.4 cm (10.0 in)	25.4 cm (10.0 in)	44 years	50 of 100 (Notable)
20 October 1984	Bay City Wtr Wks, US	daily rain	101.6 mm (4.0 in)	89.9 mm (3.5 in)	8 years	49 of 100 (Notable)
20 October 1984	Kassler, US	daily snow depth	17.8 cm (7.0 in)	17.8 cm (7.0 in)	57 years	48 of 100 (Notable)
20 October 1984	Ofahoma, US	daily rain	100.3 mm (3.9 in)	88.1 mm (3.5 in)	14 years	48 of 100 (Notable)
20 October 1984	Wells, US	daily snowfall	5.3 cm (2.1 in)	5.3 cm (2.1 in)	87 years	48 of 100 (Notable)
20 October 1984	Hart Mtn Refuge, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	45 years	48 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

1806 to 1984

Records set or tied on this calendar date in each year from 1806 to 1984. 1984 had 1,562 records.

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

Records on 10-20 in each year
Year	Records
1806	1
1835	1
1844	1
1846	1
1847	2
1851	1
1852	1
1858	1
1863	2
1864	2
1866	3
1867	1
1868	2
1872	2
1874	2
1875	3
1876	2
1877	1
1878	1
1880	3
1881	2
1884	1
1885	1
1886	1
1887	1
1888	6
1891	4
1892	4
1893	1
1894	3
1895	4
1896	9
1897	2
1898	7
1899	1
1900	8
1901	7
1902	5
1903	9
1904	13
1905	22
1906	28
1907	32
1908	26
1909	17
1910	31
1911	16
1912	6
1913	38
1914	16
1915	20
1916	72
1917	201
1918	34
1919	19
1920	81
1921	68
1922	83
1923	96
1924	182
1925	247
1926	147
1927	283
1928	92
1929	129
1930	672
1931	125
1932	331
1933	675
1934	422
1935	390
1936	370
1937	189
1938	231
1939	367
1940	757
1941	459
1942	152
1943	501
1944	288
1945	363
1946	310
1947	1,494
1948	320
1949	1,084
1950	619
1951	279
1952	520
1953	1,057
1954	262
1955	529
1956	283
1957	440
1958	461
1959	451
1960	671
1961	479
1962	733
1963	765
1964	598
1965	340
1966	857
1967	511
1968	244
1969	607
1970	710
1971	606
1972	1,724
1973	878
1974	1,122
1975	587
1976	1,304
1977	467
1978	508
1979	1,647
1980	350
1981	1,083
1982	1,191
1983	944
1984	1,562
1985	835
1986	823
1987	590
1988	737
1989	2,092
1990	609
1991	971
1992	1,174
1993	1,238
1994	650
1995	703
1996	1,417
1997	949
1998	683
1999	603
2000	737
2001	589
2002	985
2003	1,761
2004	1,861
2005	1,092
2006	1,170
2007	923
2008	477
2009	786
2010	539
2011	785
2012	945
2013	592
2014	851
2015	523
2016	947
2017	602
2018	394
2019	744
2020	1,010
2021	900
2022	834
2023	1,468
2024	707
2025	326

Download the Data

Data for records on 1984-10-20: 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 100	1,223
100 to 200	15
200 to 300	5
300 to 400	1
400 to 500	0
500 to 600	1