Weather Records on 21 October 1971

498 weather records were set or tied worldwide on 21 October 1971. Highest significance: Midland, AU.

Key Facts for 21 October 1971

On 21 October 1971, 498 weather records were set or tied at long-record stations worldwide.
216 were record highs and 37 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 492 daily.
Midland set a daily record precipitation of 44.7 mm (1.8 in) on 21 October 1971.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 419 records.

Record Map

498 stations

498 station records on 21 October 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Midland	Australia	Record daily precipitation	44.7 mm (1.8 in)	64 of 100 (Major)
Luis Gomes	Brazil	Record daily precipitation	65.2 mm (2.6 in)	60 of 100 (Major)
Acude Nova Floresta	Brazil	Record daily precipitation	39.0 mm (1.5 in)	58 of 100 (Notable)
Marcelino Vieira (Panatis)	Brazil	Record daily precipitation	41.0 mm (1.6 in)	54 of 100 (Notable)
Alexandria	Brazil	Record daily precipitation	54.3 mm (2.1 in)	54 of 100 (Notable)
Santo Antonio	Brazil	Record daily precipitation	41.0 mm (1.6 in)	47 of 100 (Notable)
Sao Jose de Piranhas	Brazil	Record daily precipitation	26.0 mm (1.0 in)	45 of 100 (Notable)
Aguiar	Brazil	Record daily precipitation	55.3 mm (2.2 in)	43 of 100 (Notable)
Quatsino	Canada	Record daily precipitation	75.7 mm (3.0 in)	42 of 100 (Notable)
Oxford	United Kingdom	Record high maximum temperature	19.4 C (66.9 F)	42 of 100 (Notable)
Bristow	United States	Record daily precipitation	74.9 mm (2.9 in)	42 of 100 (Notable)
Feiticeiro	Brazil	Record daily precipitation	27.4 mm (1.1 in)	41 of 100 (Notable)
Morrisonville 4 SE	United States	Record daily precipitation	42.2 mm (1.7 in)	41 of 100 (Notable)
Huntingdon	Canada	Record high maximum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Bethany	United States	Record daily precipitation	72.9 mm (2.9 in)	38 of 100 (Notable)
Stornoway Airport	United Kingdom	Record daily precipitation	29.0 mm (1.1 in)	37 of 100 (Notable)
Skegness	United Kingdom	Record high maximum temperature	20.5 C (68.9 F)	37 of 100 (Notable)
Ovre Sirdal	Norway	Record daily precipitation	50.4 mm (2.0 in)	36 of 100 (Notable)
Parry Sound	Canada	Record high maximum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Bakke	Norway	Record daily precipitation	48.6 mm (1.9 in)	33 of 100 (Routine)
Shawano 2SSW	United States	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
Doodlakine	Australia	Record daily precipitation	28.4 mm (1.1 in)	32 of 100 (Routine)
White River	Canada	Record high minimum temperature	10.0 C (50.0 F)	32 of 100 (Routine)
Beatrice	Canada	Record high maximum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
Joliet	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Peppermint Grove	Australia	Record daily precipitation	40.1 mm (1.6 in)	31 of 100 (Routine)
Pedro Avelino	Brazil	Record daily precipitation	30.0 mm (1.2 in)	31 of 100 (Routine)
Sparta 1 W	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Iowa City	United States	Record high minimum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Risnes I Fjotland	Norway	Record daily precipitation	42.8 mm (1.7 in)	30 of 100 (Routine)
Cet Central England	United Kingdom	Record high maximum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high maximum temperature	15.5 C (59.9 F)	30 of 100 (Routine)
Sheffield	United Kingdom	Record high maximum temperature	19.1 C (66.4 F)	30 of 100 (Routine)
Mattoon	United States	Record high minimum temperature	16.7 C (62.1 F)	30 of 100 (Routine)
New Bern 3 NW	United States	Record high minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Pinjarra	Australia	Record daily precipitation	26.9 mm (1.1 in)	29 of 100 (Routine)
Sauda	Norway	Record daily precipitation	66.3 mm (2.6 in)	29 of 100 (Routine)
Verhojansk	Russia	Record high minimum temperature	-6.1 C (21.0 F)	29 of 100 (Routine)
Brandwag	South Africa	Record daily precipitation	32.5 mm (1.3 in)	29 of 100 (Routine)
Hull	United Kingdom	Record high maximum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Amity 4 NE	United States	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
Arcadia	United States	Record high minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Grant City	United States	Record daily precipitation	46.0 mm (1.8 in)	29 of 100 (Routine)
Marble Hill	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Lancaster 4 WSW	United States	Record high minimum temperature	15.0 C (59.0 F)	29 of 100 (Routine)
Chamingup	Australia	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Union 3 SSE	United States	Record high minimum temperature	12.8 C (55.0 F)	28 of 100 (Routine)
Lysebotn	Norway	Record daily precipitation	76.1 mm (3.0 in)	27 of 100 (Routine)
Bradford	United Kingdom	Record high maximum temperature	18.8 C (65.8 F)	27 of 100 (Routine)
Mt Pulaski	United States	Record daily precipitation	38.1 mm (1.5 in)	27 of 100 (Routine)
Nevada Wtp	United States	Record daily precipitation	60.5 mm (2.4 in)	27 of 100 (Routine)
Sloan 3 S	United States	Record high minimum temperature	18.9 C (66.0 F)	27 of 100 (Routine)
Bartlesville Muni AP	United States	Record daily precipitation	44.5 mm (1.8 in)	27 of 100 (Routine)
Wisley	United Kingdom	Record high maximum temperature	19.4 C (66.9 F)	26 of 100 (Routine)
Mt Ayr	United States	Record daily precipitation	32.5 mm (1.3 in)	26 of 100 (Routine)
Muskogee	United States	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Cotija	Mexico	Record low minimum temperature	1.1 C (34.0 F)	25 of 100 (Routine)
Aledo	United States	Record high minimum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
Jefferson City Wtp	United States	Record high minimum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
Cheraw	United States	Record high minimum temperature	19.4 C (66.9 F)	25 of 100 (Routine)

Counts by Type and Timescale

498 records

Records set or tied on 21 October 1971 by type: Highest daily maximum 56, Lowest daily maximum 13, Highest daily minimum 160, Lowest daily minimum 24, Heaviest daily rainfall 244, Deepest snow cover 1.

Records on 21 October 1971 by type
Record type	Records
Highest daily maximum	56
Lowest daily maximum	13
Highest daily minimum	160
Lowest daily minimum	24
Heaviest daily rainfall	244
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 21 October 1971 by timescale: all-time 0, monthly 6, daily 492.

How Much Records Were Beaten By

407 broken records

Margins by which the 407 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.0. Ties are not counted.

Top 20 by Significance

21 October 1971

Top 20 records on 21 October 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1971	Midland, AU	daily rain	44.7 mm (1.8 in)	29.2 mm (1.1 in)	56 years	64 of 100 (Major)
21 October 1971	Luis Gomes, BR	daily rain	65.2 mm (2.6 in)	65.1 mm (2.6 in)	48 years	60 of 100 (Major)
21 October 1971	Acude Nova Floresta, BR	daily rain	39.0 mm (1.5 in)	39.0 mm (1.5 in)	49 years	58 of 100 (Notable)
21 October 1971	Marcelino Vieira (Panatis), BR	daily rain	41.0 mm (1.6 in)	41.0 mm (1.6 in)	36 years	54 of 100 (Notable)
21 October 1971	Alexandria, BR	daily rain	54.3 mm (2.1 in)	54.3 mm (2.1 in)	34 years	54 of 100 (Notable)
21 October 1971	Santo Antonio, BR	monthly rain	41.0 mm (1.6 in)	28.3 mm (1.1 in)	19 years	47 of 100 (Notable)
21 October 1971	Sao Jose de Piranhas, BR	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	60 years	45 of 100 (Notable)
21 October 1971	Aguiar, BR	monthly rain	55.3 mm (2.2 in)	17.7 mm (0.7 in)	32 years	43 of 100 (Notable)
21 October 1971	Quatsino, CA	daily rain	75.7 mm (3.0 in)	25.9 mm (1.0 in)	64 years	42 of 100 (Notable)
21 October 1971	Oxford, GB	daily high max	19.4 C (66.9 F)	0.7 C (1.3 F)	103 years	42 of 100 (Notable)
21 October 1971	Bristow, US	daily rain	74.9 mm (2.9 in)	55.1 mm (2.2 in)	21 years	42 of 100 (Notable)
21 October 1971	Feiticeiro, BR	daily rain	27.4 mm (1.1 in)	27.4 mm (1.1 in)	37 years	41 of 100 (Notable)
21 October 1971	Morrisonville 4 SE, US	daily rain	42.2 mm (1.7 in)	30.3 mm (1.2 in)	34 years	41 of 100 (Notable)
21 October 1971	Huntingdon, CA	daily high max	20.0 C (68.0 F)	0.6 C (1.1 F)	97 years	39 of 100 (Notable)
21 October 1971	Bethany, US	daily rain	72.9 mm (2.9 in)	18.5 mm (0.7 in)	62 years	38 of 100 (Notable)
21 October 1971	Stornoway Airport, GB	daily rain	29.0 mm (1.1 in)	15.0 mm (0.6 in)	14 years	37 of 100 (Notable)
21 October 1971	Skegness, GB	daily high max	20.5 C (68.9 F)	3.3 C (5.9 F)	64 years	37 of 100 (Notable)
21 October 1971	Ovre Sirdal, NO	daily rain	50.4 mm (2.0 in)	20.5 mm (0.8 in)	40 years	36 of 100 (Notable)
21 October 1971	Parry Sound, CA	daily high max	23.3 C (73.9 F)	1.6 C (2.9 F)	76 years	34 of 100 (Routine)
21 October 1971	Bakke, NO	daily rain	48.6 mm (1.9 in)	7.6 mm (0.30 in)	72 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

1795 to 1971

Records set or tied on this calendar date in each year from 1795 to 1971. 1971 had 498 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 1971-10-21: 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 2026-10-13 (13 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 20	383
20 to 40	19
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	1