Weather Records on 11 September 1971

464 weather records were set or tied worldwide on 11 September 1971. Highest significance: Les Cedres, CA.

Key Facts for 11 September 1971

On 11 September 1971, 464 weather records were set or tied at long-record stations worldwide.
230 were record highs and 54 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 13 monthly and 450 daily.
Les Cedres set a daily record precipitation of 57.2 mm (2.3 in) on 11 September 1971.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 423 records.

Record Map

464 stations

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

Weather records on 11 September 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Les Cedres	Canada	Record daily precipitation	57.2 mm (2.3 in)	59 of 100 (Notable)
Matagorda #2	United States	Record daily precipitation	139.7 mm (5.5 in)	59 of 100 (Notable)
Charlottesville 2W	United States	Record daily precipitation	85.3 mm (3.4 in)	59 of 100 (Notable)
Nurnberg	Germany	Record daily precipitation	26.6 mm (1.0 in)	58 of 100 (Notable)
Taraz	Kazakhstan	Record daily precipitation	30.1 mm (1.2 in)	53 of 100 (Notable)
Luling	United States	Record daily precipitation	131.1 mm (5.2 in)	52 of 100 (Notable)
Kingsville	United States	Record daily precipitation	87.4 mm (3.4 in)	50 of 100 (Notable)
Wilmington Porter Rsch	United States	Record daily precipitation	95.3 mm (3.8 in)	48 of 100 (Notable)
Jeffersonville	United States	Record daily precipitation	40.4 mm (1.6 in)	48 of 100 (Notable)
Koolau Dam 833	United States	Record daily precipitation	53.3 mm (2.1 in)	48 of 100 (Notable)
Baltimore Customs House	United States	Record daily precipitation	73.4 mm (2.9 in)	45 of 100 (Notable)
Owensboro 3ENE	United States	Record daily precipitation	58.4 mm (2.3 in)	44 of 100 (Notable)
Purcellville	United States	Record daily precipitation	66.3 mm (2.6 in)	43 of 100 (Notable)
Farnham	Canada	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Stewarts Brook Composite	Australia	Record daily precipitation	29.0 mm (1.1 in)	40 of 100 (Notable)
Hallettsville 2 N	United States	Record daily precipitation	101.6 mm (4.0 in)	39 of 100 (Notable)
Chokpak	Kazakhstan	Record daily precipitation	34.3 mm (1.4 in)	38 of 100 (Notable)
Rogersville 1 NE	United States	Record daily precipitation	36.3 mm (1.4 in)	38 of 100 (Notable)
Goliad	United States	Record daily precipitation	141.2 mm (5.6 in)	38 of 100 (Notable)
Pierce 1 E	United States	Record daily precipitation	71.1 mm (2.8 in)	38 of 100 (Notable)
Franca	Brazil	Record daily precipitation	116.0 mm (4.6 in)	37 of 100 (Notable)
Three Rivers	United States	Record daily precipitation	85.1 mm (3.4 in)	37 of 100 (Notable)
Yerevan	Armenia	Record high minimum temperature	19.8 C (67.6 F)	36 of 100 (Notable)
Moonan Flat (High St)	Australia	Record daily precipitation	26.4 mm (1.0 in)	36 of 100 (Notable)
Anderson	United States	Record daily precipitation	45.0 mm (1.8 in)	35 of 100 (Notable)
Lampazos (Smn)	Mexico	Record daily precipitation	64.8 mm (2.6 in)	34 of 100 (Routine)
Marcus Hook	United States	Record daily precipitation	87.4 mm (3.4 in)	34 of 100 (Routine)
Baltimore-Washington Intl AP	United States	Record daily precipitation	86.9 mm (3.4 in)	34 of 100 (Routine)
Warthausen-Birkenhard	Germany	Record daily precipitation	25.7 mm (1.0 in)	33 of 100 (Routine)
Neshaminy Falls	United States	Record daily precipitation	93.5 mm (3.7 in)	33 of 100 (Routine)
Columbus	United States	Record daily precipitation	97.8 mm (3.9 in)	33 of 100 (Routine)
Verhojansk	Russia	Record high minimum temperature	6.2 C (43.2 F)	32 of 100 (Routine)
Chestertown	United States	Record daily precipitation	63.5 mm (2.5 in)	32 of 100 (Routine)
Sullivan	United States	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Owensboro Trtmt Plt E	United States	Record daily precipitation	46.2 mm (1.8 in)	31 of 100 (Routine)
Flatonia 4SE	United States	Record daily precipitation	97.3 mm (3.8 in)	31 of 100 (Routine)
Redlands	United States	Record high maximum temperature	43.3 C (109.9 F)	30 of 100 (Routine)
Tuckerton 2 NE	United States	Record daily precipitation	63.8 mm (2.5 in)	30 of 100 (Routine)
Sitka Magnetic Obsy	United States	Record low maximum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Morrisburg	Canada	Record daily precipitation	63.5 mm (2.5 in)	29 of 100 (Routine)
Parker	United States	Record high maximum temperature	46.1 C (115.0 F)	29 of 100 (Routine)
Elsinore	United States	Record high maximum temperature	45.0 C (113.0 F)	29 of 100 (Routine)
Edwardsville 2 W	United States	Record daily precipitation	28.4 mm (1.1 in)	29 of 100 (Routine)
Fowlerton	United States	Record daily precipitation	44.5 mm (1.8 in)	29 of 100 (Routine)
George W 2 SSW	United States	Record daily precipitation	82.6 mm (3.3 in)	29 of 100 (Routine)
Pommelsbrunn	Germany	Record daily precipitation	25.3 mm (1.0 in)	28 of 100 (Routine)
Rainbow Lake	United States	Record daily precipitation	62.0 mm (2.4 in)	28 of 100 (Routine)
Zuerich/Fluntern	Switzerland	Record daily precipitation	34.9 mm (1.4 in)	27 of 100 (Routine)
Yuma Citrus STN	United States	Record high minimum temperature	30.6 C (87.1 F)	27 of 100 (Routine)
Tombstone	United States	Record high minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Browning	United States	Record high minimum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Poplar 2 E	United States	Record high maximum temperature	36.1 C (97.0 F)	26 of 100 (Routine)
Ft Meade	United States	Record high maximum temperature	35.0 C (95.0 F)	26 of 100 (Routine)
Gonzales 2S	United States	Record daily precipitation	54.9 mm (2.2 in)	26 of 100 (Routine)
Deer Park AP	United States	Record high minimum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Northport	United States	Record high minimum temperature	15.6 C (60.1 F)	26 of 100 (Routine)
Arteaga (Smn)	Mexico	Record daily precipitation	45.0 mm (1.8 in)	25 of 100 (Routine)
Kenton	United States	Record daily precipitation	35.1 mm (1.4 in)	25 of 100 (Routine)
Ricardo	United States	Record daily precipitation	62.0 mm (2.4 in)	25 of 100 (Routine)
Yoakum	United States	Record daily precipitation	62.2 mm (2.4 in)	25 of 100 (Routine)

Counts by Type and Timescale

464 records

Records set or tied on 11 September 1971 by type: Highest daily maximum 135, Lowest daily maximum 36, Highest daily minimum 95, Lowest daily minimum 18, Heaviest daily rainfall 180.

Records on 11 September 1971 by type
Record type	Records
Highest daily maximum	135
Lowest daily maximum	36
Highest daily minimum	95
Lowest daily minimum	18
Heaviest daily rainfall	180
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 September 1971 by timescale: all-time 1, monthly 13, daily 450.

How Much Records Were Beaten By

346 broken records

Margins by which the 346 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 99.1. Ties are not counted.

Top 20 by Significance

11 September 1971

Top 20 records on 11 September 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1971	Les Cedres, CA	daily rain	57.2 mm (2.3 in)	39.7 mm (1.6 in)	49 years	59 of 100 (Notable)
11 September 1971	Matagorda #2, US	daily rain	139.7 mm (5.5 in)	96.5 mm (3.8 in)	57 years	59 of 100 (Notable)
11 September 1971	Charlottesville 2W, US	daily rain	85.3 mm (3.4 in)	60.4 mm (2.4 in)	60 years	59 of 100 (Notable)
11 September 1971	Nurnberg, DE	daily rain	26.6 mm (1.0 in)	16.4 mm (0.6 in)	56 years	58 of 100 (Notable)
11 September 1971	Taraz, KZ	monthly rain	30.1 mm (1.2 in)	12.5 mm (0.5 in)	1 year	53 of 100 (Notable)
11 September 1971	Luling, US	daily rain	131.1 mm (5.2 in)	99.1 mm (3.9 in)	18 years	52 of 100 (Notable)
11 September 1971	Kingsville, US	daily rain	87.4 mm (3.4 in)	55.6 mm (2.2 in)	57 years	50 of 100 (Notable)
11 September 1971	Wilmington Porter Rsch, US	daily rain	95.3 mm (3.8 in)	64.8 mm (2.6 in)	20 years	48 of 100 (Notable)
11 September 1971	Jeffersonville, US	daily rain	40.4 mm (1.6 in)	24.4 mm (1.0 in)	65 years	48 of 100 (Notable)
11 September 1971	Koolau Dam 833, US	daily rain	53.3 mm (2.1 in)	34.0 mm (1.3 in)	40 years	48 of 100 (Notable)
11 September 1971	Baltimore Customs House, US	daily rain	73.4 mm (2.9 in)	15.5 mm (0.6 in)	88 years	45 of 100 (Notable)
11 September 1971	Owensboro 3ENE, US	daily rain	58.4 mm (2.3 in)	34.3 mm (1.4 in)	36 years	44 of 100 (Notable)
11 September 1971	Purcellville, US	daily rain	66.3 mm (2.6 in)	41.7 mm (1.6 in)	20 years	43 of 100 (Notable)
11 September 1971	Farnham, CA	daily rain	50.8 mm (2.0 in)	25.4 mm (1.0 in)	34 years	42 of 100 (Notable)
11 September 1971	Stewarts Brook Composite, AU	daily rain	29.0 mm (1.1 in)	16.0 mm (0.6 in)	64 years	40 of 100 (Notable)
11 September 1971	Hallettsville 2 N, US	daily rain	101.6 mm (4.0 in)	50.8 mm (2.0 in)	9 years	39 of 100 (Notable)
11 September 1971	Chokpak, KZ	monthly rain	34.3 mm (1.4 in)	12.4 mm (0.5 in)	1 year	38 of 100 (Notable)
11 September 1971	Rogersville 1 NE, US	daily rain	36.3 mm (1.4 in)	11.9 mm (0.5 in)	64 years	38 of 100 (Notable)
11 September 1971	Goliad, US	daily rain	141.2 mm (5.6 in)	68.3 mm (2.7 in)	18 years	38 of 100 (Notable)
11 September 1971	Pierce 1 E, US	daily rain	71.1 mm (2.8 in)	38.1 mm (1.5 in)	21 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

1809 to 1971

Records set or tied on this calendar date in each year from 1809 to 1971. 1971 had 464 records.

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

Records on 09-11 in each year
Year	Records
1809	1
1814	3
1818	1
1830	1
1836	1
1838	3
1839	1
1848	1
1850	1
1851	1
1854	2
1858	1
1860	2
1861	1
1863	2
1865	3
1866	1
1874	2
1876	1
1877	1
1879	1
1880	1
1882	4
1883	2
1884	1
1886	1
1888	2
1889	4
1890	2
1891	2
1892	1
1893	4
1894	2
1895	4
1896	1
1897	3
1898	3
1899	5
1900	1
1901	3
1902	15
1903	13
1904	4
1905	5
1906	10
1907	9
1908	20
1909	12
1910	19
1911	9
1912	25
1913	22
1914	52
1915	160
1916	17
1917	88
1918	62
1919	52
1920	158
1921	52
1922	78
1923	44
1924	290
1925	260
1926	137
1927	300
1928	127
1929	206
1930	136
1931	868
1932	210
1933	276
1934	144
1935	410
1936	567
1937	324
1938	288
1939	561
1940	891
1941	210
1942	234
1943	335
1944	446
1945	341
1946	262
1947	611
1948	424
1949	450
1950	462
1951	247
1952	549
1953	392
1954	363
1955	479
1956	539
1957	470
1958	748
1959	488
1960	423
1961	524
1962	480
1963	359
1964	1,195
1965	414
1966	392
1967	478
1968	835
1969	685
1970	474
1971	464
1972	507
1973	612
1974	430
1975	644
1976	920
1977	406
1978	911
1979	596
1980	474
1981	347
1982	862
1983	1,243
1984	888
1985	844
1986	1,221
1987	595
1988	1,019
1989	1,301
1990	840
1991	843
1992	672
1993	809
1994	713
1995	619
1996	1,030
1997	808
1998	1,821
1999	1,073
2000	1,469
2001	826
2002	1,059
2003	1,022
2004	740
2005	1,163
2006	1,132
2007	947
2008	916
2009	774
2010	965
2011	1,051
2012	687
2013	1,207
2014	1,100
2015	683
2016	677
2017	916
2018	763
2019	806
2020	1,235
2021	851
2022	617
2023	1,034
2024	889
2025	917
2026	615

Download the Data

Data for records on 1971-09-11: 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).

Histogram of margins by which records were beaten on 11 September 1971
Margin	Records
0 to 20	301
20 to 40	29
40 to 60	10
60 to 80	4
80 to 100	2