Weather Records on 11 September 2011

1,051 weather records were set or tied worldwide on 11 September 2011. Highest significance: Wittenberg, DE.

Key Facts for 11 September 2011

On 11 September 2011, 1,051 weather records were set or tied at long-record stations worldwide.
460 were record highs and 437 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 41 monthly and 1,008 daily.
Wittenberg set a daily record precipitation of 46.5 mm (1.8 in) on 11 September 2011.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 420 records.

Record Map

1,051 stations

1,051 station records on 11 September 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wittenberg	Germany	Record daily precipitation	46.5 mm (1.8 in)	62 of 100 (Major)
Palmdale	United States	Record daily precipitation	34.3 mm (1.4 in)	59 of 100 (Notable)
Ravenna 2 S	United States	Record daily precipitation	66.8 mm (2.6 in)	59 of 100 (Notable)
Gilserberg-Moischeid	Germany	Record daily precipitation	43.6 mm (1.7 in)	57 of 100 (Notable)
Melsungen-Burstoss	Germany	Record daily precipitation	45.7 mm (1.8 in)	55 of 100 (Notable)
Yuncheng	China	Record daily precipitation	62.5 mm (2.5 in)	53 of 100 (Notable)
Hat Yai	Thailand	Record daily precipitation	135.9 mm (5.4 in)	52 of 100 (Notable)
Muncheberg	Germany	Record daily precipitation	37.0 mm (1.5 in)	51 of 100 (Notable)
Giessen/Wettenberg	Germany	Record daily precipitation	33.9 mm (1.3 in)	49 of 100 (Notable)
Neukirchen-Hauptschwenda	Germany	Record daily precipitation	43.2 mm (1.7 in)	49 of 100 (Notable)
Philo 3 SW	United States	Record daily precipitation	42.9 mm (1.7 in)	47 of 100 (Notable)
Acatlan de Juarez	Mexico	Record low minimum temperature	10.0 C (50.0 F)	46 of 100 (Notable)
Mehringen	Germany	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Moroleon	Mexico	Record low minimum temperature	7.8 C (46.0 F)	45 of 100 (Notable)
Pereslavl-Zalesskij	Russia	Record daily precipitation	34.8 mm (1.4 in)	45 of 100 (Notable)
Buholmrasa Fyr	Norway	Record daily precipitation	29.6 mm (1.2 in)	44 of 100 (Notable)
Moscow	Russia	Record daily precipitation	34.6 mm (1.4 in)	44 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record high maximum temperature	30.2 C (86.4 F)	43 of 100 (Notable)
Healdsburg	United States	Record high minimum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
New Braunfels	United States	Record low minimum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record high minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Bad Sooden-Allendorf	Germany	Record daily precipitation	32.0 mm (1.3 in)	42 of 100 (Notable)
Leinefelde	Germany	Record daily precipitation	38.4 mm (1.5 in)	42 of 100 (Notable)
Hool	Mexico	Record daily precipitation	85.3 mm (3.4 in)	42 of 100 (Notable)
Catemaco	Mexico	Record low minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Trondheim - Voll	Norway	Record daily precipitation	38.0 mm (1.5 in)	42 of 100 (Notable)
Kremsmuenster	Austria	Record high maximum temperature	29.7 C (85.5 F)	41 of 100 (Notable)
Osijek	Croatia	Record high maximum temperature	34.2 C (93.6 F)	41 of 100 (Notable)
Centro Experimental W-75	Mexico	Record low maximum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Trang	Thailand	Record daily precipitation	75.4 mm (3.0 in)	41 of 100 (Notable)
Joseph	United States	Record high minimum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Waterville	United States	Record high maximum temperature	32.8 C (91.0 F)	41 of 100 (Notable)
Lufkin Angelina Co AP	United States	Record high maximum temperature	38.3 C (100.9 F)	41 of 100 (Notable)
Regensburg	Germany	Record high maximum temperature	29.0 C (84.2 F)	40 of 100 (Notable)
Bernburg/Saale (Nord)	Germany	Record high minimum temperature	16.6 C (61.9 F)	40 of 100 (Notable)
San Luis de la Paz	Mexico	Record low minimum temperature	5.6 C (42.1 F)	40 of 100 (Notable)
Presa la Esperanza	Mexico	Record low minimum temperature	0.6 C (33.1 F)	40 of 100 (Notable)
San Andres	Mexico	Record low maximum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Leinstrand	Norway	Record daily precipitation	42.3 mm (1.7 in)	40 of 100 (Notable)
Aspendell	United States	Record low maximum temperature	11.7 C (53.1 F)	40 of 100 (Notable)
Mosquito Creek Lake	United States	Record daily precipitation	50.5 mm (2.0 in)	40 of 100 (Notable)
Poteet	United States	Record high maximum temperature	43.3 C (109.9 F)	40 of 100 (Notable)
Ebbetts Pass	United States	Record daily precipitation	27.9 mm (1.1 in)	40 of 100 (Notable)
Geisenheim	Germany	Record daily precipitation	26.3 mm (1.0 in)	39 of 100 (Notable)
Teloloapan	Mexico	Record high maximum temperature	31.7 C (89.1 F)	39 of 100 (Notable)
Atzalan	Mexico	Record low minimum temperature	7.8 C (46.0 F)	39 of 100 (Notable)
Apaseo El Alto	Mexico	Record low minimum temperature	6.7 C (44.1 F)	37 of 100 (Notable)
San Agustin Metziquititlan	Mexico	Record low minimum temperature	5.6 C (42.1 F)	37 of 100 (Notable)
Jasso	Mexico	Record low minimum temperature	2.8 C (37.0 F)	37 of 100 (Notable)
Samaria	Mexico	Record low maximum temperature	25.0 C (77.0 F)	37 of 100 (Notable)
Atzalan	Mexico	Record low maximum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Songkhla	Thailand	Record low maximum temperature	25.5 C (77.9 F)	37 of 100 (Notable)
Centralia	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record daily precipitation	34.9 mm (1.4 in)	36 of 100 (Notable)
Guayameo	Mexico	Record high minimum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Santa Fe del Rio	Mexico	Record low minimum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
Oaxtepec	Mexico	Record low minimum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Poza Rica	Mexico	Record low maximum temperature	22.8 C (73.0 F)	36 of 100 (Notable)
Apuka	Russia	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
Aginskoe	Russia	Record daily precipitation	32.0 mm (1.3 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,051 records

Records set or tied on 11 September 2011 by type: Highest daily maximum 285, Lowest daily maximum 123, Highest daily minimum 175, Lowest daily minimum 314, Heaviest daily rainfall 154.

Records on 11 September 2011 by type
Record type	Records
Highest daily maximum	285
Lowest daily maximum	123
Highest daily minimum	175
Lowest daily minimum	314
Heaviest daily rainfall	154
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 September 2011 by timescale: all-time 2, monthly 41, daily 1,008.

How Much Records Were Beaten By

800 broken records

Margins by which the 800 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 117.9. Ties are not counted.

Top 20 by Significance

11 September 2011

Top 20 records on 11 September 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 2011	Wittenberg, DE	daily rain	46.5 mm (1.8 in)	30.4 mm (1.2 in)	40 years	62 of 100 (Major)
11 September 2011	Palmdale, US	daily rain	34.3 mm (1.4 in)	28.5 mm (1.1 in)	34 years	59 of 100 (Notable)
11 September 2011	Ravenna 2 S, US	daily rain	66.8 mm (2.6 in)	51.1 mm (2.0 in)	52 years	59 of 100 (Notable)
11 September 2011	Gilserberg-Moischeid, DE	daily rain	43.6 mm (1.7 in)	28.1 mm (1.1 in)	32 years	57 of 100 (Notable)
11 September 2011	Melsungen-Burstoss, DE	daily rain	45.7 mm (1.8 in)	27.0 mm (1.1 in)	32 years	55 of 100 (Notable)
11 September 2011	Yuncheng, CN	daily rain	62.5 mm (2.5 in)	42.7 mm (1.7 in)	48 years	53 of 100 (Notable)
11 September 2011	Hat Yai, TH	daily rain	135.9 mm (5.4 in)	117.9 mm (4.6 in)	32 years	52 of 100 (Notable)
11 September 2011	Muncheberg, DE	daily rain	37.0 mm (1.5 in)	15.1 mm (0.6 in)	36 years	51 of 100 (Notable)
11 September 2011	Giessen/Wettenberg, DE	daily rain	33.9 mm (1.3 in)	19.0 mm (0.7 in)	17 years	49 of 100 (Notable)
11 September 2011	Neukirchen-Hauptschwenda, DE	daily rain	43.2 mm (1.7 in)	26.1 mm (1.0 in)	5 years	49 of 100 (Notable)
11 September 2011	Philo 3 SW, US	daily rain	42.9 mm (1.7 in)	9.1 mm (0.36 in)	100 years	47 of 100 (Notable)
11 September 2011	Acatlan de Juarez, MX	daily low min	10.0 C (50.0 F)	3.9 C (7.0 F)	48 years	46 of 100 (Notable)
11 September 2011	Mehringen, DE	daily rain	25.4 mm (1.0 in)	14.0 mm (0.6 in)	40 years	45 of 100 (Notable)
11 September 2011	Moroleon, MX	daily low min	7.8 C (46.0 F)	2.2 C (4.0 F)	80 years	45 of 100 (Notable)
11 September 2011	Pereslavl-Zalesskij, RU	daily rain	34.8 mm (1.4 in)	17.3 mm (0.7 in)	33 years	45 of 100 (Notable)
11 September 2011	Buholmrasa Fyr, NO	daily rain	29.6 mm (1.2 in)	15.9 mm (0.6 in)	26 years	44 of 100 (Notable)
11 September 2011	Moscow, RU	daily rain	34.6 mm (1.4 in)	16.9 mm (0.7 in)	32 years	44 of 100 (Notable)
11 September 2011	Munchen-Nymphenburg, DE	daily high max	30.2 C (86.4 F)	1.7 C (3.1 F)	112 years	43 of 100 (Notable)
11 September 2011	Healdsburg, US	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	102 years	43 of 100 (Notable)
11 September 2011	New Braunfels, US	daily low min	12.8 C (55.0 F)	2.2 C (4.0 F)	92 years	43 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 2011

Records set or tied on this calendar date in each year from 1809 to 2011. 2011 had 1,051 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 2011-09-11: 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).

Margin	Records
0 to 20	782
20 to 40	12
40 to 60	4
60 to 80	1
80 to 100	0
100 to 120	1