Weather Records on 11 October 1971

521 weather records were set or tied worldwide on 11 October 1971. Highest significance: Harrington Harbour, CA.

Key Facts for 11 October 1971

On 11 October 1971, 521 weather records were set or tied at long-record stations worldwide.
187 were record highs and 98 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 512 daily.
Harrington Harbour set a daily record precipitation of 59.2 mm (2.3 in) on 11 October 1971.
Across 165 earlier years (1793 to 2026) the same calendar date averaged 454 records.

Record Map

521 stations

521 station records on 11 October 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 October 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Harrington Harbour	Canada	Record daily precipitation	59.2 mm (2.3 in)	52 of 100 (Notable)
Mvenyane	South Africa	Record daily precipitation	68.0 mm (2.7 in)	49 of 100 (Notable)
Fazenda da Guarda (Parque)	Brazil	Record daily precipitation	104.4 mm (4.1 in)	48 of 100 (Notable)
Burlington	United States	Record daily precipitation	63.0 mm (2.5 in)	48 of 100 (Notable)
Holyoke	United States	Record daily precipitation	54.9 mm (2.2 in)	48 of 100 (Notable)
Usina Do Chicao	Brazil	Record daily precipitation	43.9 mm (1.7 in)	46 of 100 (Notable)
Moorestown 4 E	United States	Record daily precipitation	44.7 mm (1.8 in)	45 of 100 (Notable)
Sussex 1 NW	United States	Record daily precipitation	60.5 mm (2.4 in)	45 of 100 (Notable)
Campo Alegre	Brazil	Record daily precipitation	67.3 mm (2.6 in)	43 of 100 (Notable)
Pogranichnyj	Russia	Record daily precipitation	36.7 mm (1.4 in)	43 of 100 (Notable)
Newton	United States	Record daily precipitation	52.1 mm (2.1 in)	43 of 100 (Notable)
Vila Capivari	Brazil	Record daily precipitation	61.1 mm (2.4 in)	42 of 100 (Notable)
Amherst	United States	Record daily precipitation	45.5 mm (1.8 in)	41 of 100 (Notable)
Maclear (Mag)	South Africa	Record daily precipitation	35.0 mm (1.4 in)	40 of 100 (Notable)
Usina Do Fojo	Brazil	Record daily precipitation	92.7 mm (3.6 in)	39 of 100 (Notable)
Ciudad Hidalgo (Smn)	Mexico	Record daily precipitation	39.9 mm (1.6 in)	39 of 100 (Notable)
Lakeport 2	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Manchester	United States	Record daily precipitation	50.0 mm (2.0 in)	39 of 100 (Notable)
Lake Konomoc	United States	Record daily precipitation	67.6 mm (2.7 in)	38 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	39.1 mm (1.5 in)	38 of 100 (Notable)
Petersham 3 N	United States	Record daily precipitation	39.9 mm (1.6 in)	38 of 100 (Notable)
Pindamonhangaba (Pcd)	Brazil	Record daily precipitation	84.0 mm (3.3 in)	37 of 100 (Notable)
Bathurst	Canada	Record high minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Ellsworth	United States	Record daily precipitation	56.4 mm (2.2 in)	37 of 100 (Notable)
Phillipsburg	United States	Record daily precipitation	50.5 mm (2.0 in)	37 of 100 (Notable)
Vernon	United States	Record daily precipitation	62.5 mm (2.5 in)	37 of 100 (Notable)
Barkhamsted	United States	Record daily precipitation	56.4 mm (2.2 in)	36 of 100 (Notable)
Bar Harbor 3 NW	United States	Record daily precipitation	64.3 mm (2.5 in)	36 of 100 (Notable)
Westfield	United States	Record daily precipitation	59.9 mm (2.4 in)	36 of 100 (Notable)
Tatui	Brazil	Record daily precipitation	60.0 mm (2.4 in)	35 of 100 (Notable)
Warwick	United States	Record daily precipitation	53.3 mm (2.1 in)	35 of 100 (Notable)
Madison	United States	Record daily precipitation	43.2 mm (1.7 in)	34 of 100 (Routine)
Woodstock	United States	Record daily precipitation	37.1 mm (1.5 in)	34 of 100 (Routine)
Mairipora	Brazil	Record daily precipitation	55.3 mm (2.2 in)	33 of 100 (Routine)
Barkerville	Canada	Record high maximum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Farmington	United States	Record daily precipitation	40.9 mm (1.6 in)	33 of 100 (Routine)
Jackman	United States	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)
E Wareham	United States	Record daily precipitation	39.9 mm (1.6 in)	33 of 100 (Routine)
Southport 5 N	United States	Record daily precipitation	90.9 mm (3.6 in)	33 of 100 (Routine)
Alto Alegre	Brazil	Record daily precipitation	62.9 mm (2.5 in)	32 of 100 (Routine)
Piacaguera (Efsj)	Brazil	Record daily precipitation	139.7 mm (5.5 in)	32 of 100 (Routine)
Enisejsk	Russia	Record high minimum temperature	6.2 C (43.2 F)	32 of 100 (Routine)
Timiryazevskij	Russia	Record daily precipitation	54.3 mm (2.1 in)	32 of 100 (Routine)
Clinton 2 S	United States	Record daily precipitation	50.3 mm (2.0 in)	32 of 100 (Routine)
Holbrook	United States	Record low minimum temperature	-4.4 C (24.1 F)	31 of 100 (Routine)
Woodland	United States	Record daily precipitation	53.3 mm (2.1 in)	31 of 100 (Routine)
Keene	United States	Record daily precipitation	42.2 mm (1.7 in)	31 of 100 (Routine)
Fort Huachuca	United States	Record low maximum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Millinocket	United States	Record daily precipitation	41.9 mm (1.6 in)	30 of 100 (Routine)
Squa Pan Dam	United States	Record daily precipitation	36.1 mm (1.4 in)	30 of 100 (Routine)
Hardwick	United States	Record daily precipitation	52.1 mm (2.1 in)	30 of 100 (Routine)
Fazenda Guaxupe	Brazil	Record daily precipitation	60.2 mm (2.4 in)	29 of 100 (Routine)
Fitzwilliam 2 W	United States	Record daily precipitation	39.6 mm (1.6 in)	29 of 100 (Routine)
Launceston (Kings Meadows)	Australia	Record daily precipitation	30.2 mm (1.2 in)	28 of 100 (Routine)
Poset	Russia	Record daily precipitation	59.4 mm (2.3 in)	28 of 100 (Routine)
San Carlos	United States	Record low maximum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Storrs	United States	Record daily precipitation	51.3 mm (2.0 in)	28 of 100 (Routine)
Newnan 7 WNW	United States	Record low minimum temperature	2.2 C (36.0 F)	28 of 100 (Routine)
Hatchville	United States	Record daily precipitation	38.1 mm (1.5 in)	28 of 100 (Routine)
Pembroke	United States	Record daily precipitation	47.0 mm (1.9 in)	28 of 100 (Routine)

Counts by Type and Timescale

521 records

Records set or tied on 11 October 1971 by type: Highest daily maximum 101, Lowest daily maximum 47, Highest daily minimum 86, Lowest daily minimum 51, Heaviest daily rainfall 231, Deepest snow cover 5.

Records on 11 October 1971 by type
Record type	Records
Highest daily maximum	101
Lowest daily maximum	47
Highest daily minimum	86
Lowest daily minimum	51
Heaviest daily rainfall	231
Heaviest daily snowfall	0
Deepest snow cover	5

Records on 11 October 1971 by timescale: all-time 0, monthly 9, daily 512.

How Much Records Were Beaten By

426 broken records

Margins by which the 426 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

11 October 1971

Top 20 records on 11 October 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 October 1971	Harrington Harbour, CA	daily rain	59.2 mm (2.3 in)	35.8 mm (1.4 in)	29 years	52 of 100 (Notable)
11 October 1971	Mvenyane, ZA	daily rain	68.0 mm (2.7 in)	52.0 mm (2.0 in)	13 years	49 of 100 (Notable)
11 October 1971	Fazenda da Guarda (Parque), BR	monthly rain	104.4 mm (4.1 in)	38.2 mm (1.5 in)	7 years	48 of 100 (Notable)
11 October 1971	Burlington, US	daily rain	63.0 mm (2.5 in)	48.8 mm (1.9 in)	29 years	48 of 100 (Notable)
11 October 1971	Holyoke, US	daily rain	54.9 mm (2.2 in)	36.6 mm (1.4 in)	48 years	48 of 100 (Notable)
11 October 1971	Usina Do Chicao, BR	daily rain	43.9 mm (1.7 in)	35.5 mm (1.4 in)	12 years	46 of 100 (Notable)
11 October 1971	Moorestown 4 E, US	daily rain	44.7 mm (1.8 in)	21.8 mm (0.9 in)	68 years	45 of 100 (Notable)
11 October 1971	Sussex 1 NW, US	daily rain	60.5 mm (2.4 in)	28.0 mm (1.1 in)	57 years	45 of 100 (Notable)
11 October 1971	Campo Alegre, BR	daily rain	67.3 mm (2.6 in)	48.8 mm (1.9 in)	18 years	43 of 100 (Notable)
11 October 1971	Pogranichnyj, RU	daily rain	36.7 mm (1.4 in)	23.7 mm (0.9 in)	12 years	43 of 100 (Notable)
11 October 1971	Newton, US	daily rain	52.1 mm (2.1 in)	24.2 mm (1.0 in)	68 years	43 of 100 (Notable)
11 October 1971	Vila Capivari, BR	daily rain	61.1 mm (2.4 in)	38.9 mm (1.5 in)	20 years	42 of 100 (Notable)
11 October 1971	Amherst, US	daily rain	45.5 mm (1.8 in)	14.0 mm (0.6 in)	76 years	41 of 100 (Notable)
11 October 1971	Maclear (Mag), ZA	daily rain	35.0 mm (1.4 in)	21.0 mm (0.8 in)	22 years	40 of 100 (Notable)
11 October 1971	Usina Do Fojo, BR	monthly rain	92.7 mm (3.6 in)	22.4 mm (0.9 in)	34 years	39 of 100 (Notable)
11 October 1971	Ciudad Hidalgo (Smn), MX	daily rain	39.9 mm (1.6 in)	26.7 mm (1.1 in)	8 years	39 of 100 (Notable)
11 October 1971	Lakeport 2, US	daily rain	43.2 mm (1.7 in)	30.8 mm (1.2 in)	34 years	39 of 100 (Notable)
11 October 1971	Manchester, US	daily rain	50.0 mm (2.0 in)	29.2 mm (1.1 in)	20 years	39 of 100 (Notable)
11 October 1971	Lake Konomoc, US	daily rain	67.6 mm (2.7 in)	37.1 mm (1.5 in)	37 years	38 of 100 (Notable)
11 October 1971	Blue Hill Coop, US	daily rain	39.1 mm (1.5 in)	14.7 mm (0.6 in)	68 years	38 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

1793 to 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 521 records.

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

Records on 10-11 in each year
Year	Records
1793	1
1801	1
1802	2
1803	1
1805	1
1807	1
1811	1
1814	2
1839	1
1845	1
1849	1
1851	1
1852	1
1854	1
1859	1
1860	4
1861	1
1864	2
1867	2
1869	1
1870	1
1872	2
1873	2
1875	1
1876	4
1877	3
1879	2
1880	2
1884	2
1885	5
1887	4
1888	2
1889	3
1890	1
1891	2
1892	2
1896	2
1897	4
1898	4
1900	1
1901	8
1902	14
1903	10
1904	20
1905	17
1906	52
1907	10
1908	11
1909	17
1910	31
1911	14
1912	21
1913	48
1914	40
1915	14
1916	25
1917	48
1918	32
1919	76
1920	140
1921	92
1922	35
1923	231
1924	149
1925	196
1926	137
1927	176
1928	713
1929	259
1930	656
1931	396
1932	235
1933	200
1934	862
1935	245
1936	243
1937	242
1938	438
1939	249
1940	201
1941	190
1942	537
1943	414
1944	247
1945	284
1946	770
1947	405
1948	736
1949	835
1950	450
1951	538
1952	472
1953	408
1954	672
1955	434
1956	894
1957	258
1958	795
1959	1,027
1960	333
1961	610
1962	857
1963	570
1964	927
1965	202
1966	279
1967	643
1968	312
1969	1,032
1970	859
1971	521
1972	708
1973	1,325
1974	356
1975	559
1976	565
1977	655
1978	426
1979	1,260
1980	478
1981	776
1982	1,141
1983	542
1984	552
1985	977
1986	961
1987	1,603
1988	621
1989	571
1990	1,617
1991	1,055
1992	527
1993	883
1994	726
1995	975
1996	842
1997	1,809
1998	750
1999	996
2000	1,782
2001	962
2002	1,000
2003	1,191
2004	593
2005	1,044
2006	840
2007	610
2008	1,369
2009	2,594
2010	964
2011	1,176
2012	696
2013	666
2014	620
2015	1,032
2016	378
2017	1,101
2018	1,517
2019	1,760
2020	680
2021	873
2022	244
2023	858
2024	842
2025	711
2026	897

Download the Data

Data for records on 1971-10-11: 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 20	363
20 to 40	55
40 to 60	6
60 to 80	1
80 to 100	0
100 to 120	1