Weather Records on 12 September 2011

988 weather records were set or tied worldwide on 12 September 2011. Highest significance: Narpio Alamarkku, FI.

Key Facts for 12 September 2011

On 12 September 2011, 988 weather records were set or tied at long-record stations worldwide.
532 were record highs and 300 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 17 monthly and 970 daily.
Narpio Alamarkku set a daily record precipitation of 34.6 mm (1.4 in) on 12 September 2011.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 410 records.

Record Map

988 stations

988 station records on 12 September 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Narpio Alamarkku	Finland	Record daily precipitation	34.6 mm (1.4 in)	55 of 100 (Notable)
Talljarv_D	Sweden	Record daily precipitation	35.5 mm (1.4 in)	55 of 100 (Notable)
Szczecin	Poland	Record daily precipitation	28.4 mm (1.1 in)	53 of 100 (Notable)
Leusi	Russia	Record daily precipitation	30.4 mm (1.2 in)	50 of 100 (Notable)
Parkajoki	Sweden	Record daily precipitation	30.1 mm (1.2 in)	49 of 100 (Notable)
Kodiak AP	United States	Record daily precipitation	87.9 mm (3.5 in)	48 of 100 (Notable)
Mustasaari Riimala	Finland	Record daily precipitation	30.2 mm (1.2 in)	46 of 100 (Notable)
Tierra Morada	Mexico	Record daily precipitation	181.9 mm (7.2 in)	45 of 100 (Notable)
Tuba City	United States	Record low minimum temperature	0.6 C (33.1 F)	45 of 100 (Notable)
Tyler Pounds Fld	United States	Record high maximum temperature	38.9 C (102.0 F)	45 of 100 (Notable)
Havelund	Sweden	Record daily precipitation	41.5 mm (1.6 in)	44 of 100 (Notable)
Gatesville	United States	Record high maximum temperature	40.0 C (104.0 F)	44 of 100 (Notable)
Lufkin Angelina Co AP	United States	Record high maximum temperature	39.4 C (102.9 F)	44 of 100 (Notable)
Halden	Norway	Record daily precipitation	35.5 mm (1.4 in)	43 of 100 (Notable)
Falfurrias	United States	Record low minimum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Sugar Land	United States	Record high maximum temperature	38.9 C (102.0 F)	42 of 100 (Notable)
Arad	Romania	Record high minimum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Adjuntas 2 NW	Puerto Rico [United States]	Record daily precipitation	129.3 mm (5.1 in)	41 of 100 (Notable)
Gila Bend 2SE	United States	Record daily precipitation	35.6 mm (1.4 in)	41 of 100 (Notable)
Pendleton Dwtn	United States	Record high maximum temperature	35.6 C (96.1 F)	41 of 100 (Notable)
Iturbide	Mexico	Record daily precipitation	99.8 mm (3.9 in)	40 of 100 (Notable)
Rodkallen_A	Sweden	Record daily precipitation	27.6 mm (1.1 in)	40 of 100 (Notable)
Dengqen	China	Record daily precipitation	32.3 mm (1.3 in)	39 of 100 (Notable)
Xicatlacotla (Cfe)	Mexico	Record low minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Las Animas	Mexico	Record low maximum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Roosevelt Roads	Puerto Rico [United States]	Record daily precipitation	199.6 mm (7.9 in)	39 of 100 (Notable)
Pavillion	United States	Record high minimum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Angermunde	Germany	Record high minimum temperature	15.5 C (59.9 F)	38 of 100 (Notable)
Condon	United States	Record high maximum temperature	34.4 C (93.9 F)	38 of 100 (Notable)
Prineville	United States	Record high minimum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
San Marcos	United States	Record high maximum temperature	38.9 C (102.0 F)	38 of 100 (Notable)
El Tejocote	Mexico	Record low minimum temperature	2.2 C (36.0 F)	37 of 100 (Notable)
Aldama (Dge)	Mexico	Record low minimum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Salzburg	Austria	Record high minimum temperature	16.7 C (62.1 F)	36 of 100 (Notable)
Tapijulapa	Mexico	Record low minimum temperature	20.0 C (68.0 F)	36 of 100 (Notable)
Vero Beach Intl AP	United States	Record daily precipitation	34.5 mm (1.4 in)	36 of 100 (Notable)
Houston William P Hobby AP	United States	Record high maximum temperature	37.2 C (99.0 F)	36 of 100 (Notable)
Sarajevo	Bosnia and Herzegovina	Record high maximum temperature	34.1 C (93.4 F)	35 of 100 (Notable)
Henan	Sweden	Record daily precipitation	35.2 mm (1.4 in)	35 of 100 (Notable)
Pine Rvr Dam	United States	Record high maximum temperature	31.7 C (89.1 F)	35 of 100 (Notable)
Mt Adams Rs	United States	Record high maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)
Winthrop 1 WSW	United States	Record high maximum temperature	35.0 C (95.0 F)	35 of 100 (Notable)
Independence Creek	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Pello Konttajarvi	Finland	Record daily precipitation	26.2 mm (1.0 in)	34 of 100 (Routine)
Poza Rica	Mexico	Record low minimum temperature	17.8 C (64.0 F)	34 of 100 (Routine)
Waterville	United States	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Nilchi	Mexico	Record daily precipitation	69.9 mm (2.8 in)	33 of 100 (Routine)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Pueblo Nuevo	Mexico	Record low minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
A Coruna	Spain	Record high minimum temperature	19.5 C (67.1 F)	33 of 100 (Routine)
Sandpoint Exp STN	United States	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Moro	United States	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Elma	United States	Record high maximum temperature	33.3 C (91.9 F)	33 of 100 (Routine)
Longview	United States	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Prosser	United States	Record high minimum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Wanyuan	China	Record daily precipitation	85.6 mm (3.4 in)	32 of 100 (Routine)
Ocozocoautla	Mexico	Record low maximum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
El Cantil	Mexico	Record high maximum temperature	28.9 C (84.0 F)	32 of 100 (Routine)
Valle de Santiago	Mexico	Record low minimum temperature	6.7 C (44.1 F)	32 of 100 (Routine)
Chiconautla	Mexico	Record high maximum temperature	32.8 C (91.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

988 records

Records set or tied on 12 September 2011 by type: Highest daily maximum 310, Lowest daily maximum 67, Highest daily minimum 222, Lowest daily minimum 233, Heaviest daily rainfall 156.

Records on 12 September 2011 by type
Record type	Records
Highest daily maximum	310
Lowest daily maximum	67
Highest daily minimum	222
Lowest daily minimum	233
Heaviest daily rainfall	156
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 2011 by timescale: all-time 1, monthly 17, daily 970.

How Much Records Were Beaten By

698 broken records

Margins by which the 698 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 111.8. Ties are not counted.

Top 20 by Significance

12 September 2011

Top 20 records on 12 September 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 2011	Narpio Alamarkku, FI	daily rain	34.6 mm (1.4 in)	22.6 mm (0.9 in)	41 years	55 of 100 (Notable)
12 September 2011	Talljarv_D, SE	daily rain	35.5 mm (1.4 in)	27.8 mm (1.1 in)	36 years	55 of 100 (Notable)
12 September 2011	Szczecin, PL	daily rain	28.4 mm (1.1 in)	12.4 mm (0.5 in)	73 years	53 of 100 (Notable)
12 September 2011	Leusi, RU	daily rain	30.4 mm (1.2 in)	13.4 mm (0.5 in)	60 years	50 of 100 (Notable)
12 September 2011	Parkajoki, SE	daily rain	30.1 mm (1.2 in)	14.5 mm (0.6 in)	46 years	49 of 100 (Notable)
12 September 2011	Kodiak AP, US	daily rain	87.9 mm (3.5 in)	44.7 mm (1.8 in)	32 years	48 of 100 (Notable)
12 September 2011	Mustasaari Riimala, FI	daily rain	30.2 mm (1.2 in)	15.8 mm (0.6 in)	36 years	46 of 100 (Notable)
12 September 2011	Tierra Morada, MX	daily rain	181.9 mm (7.2 in)	111.8 mm (4.4 in)	8 years	45 of 100 (Notable)
12 September 2011	Tuba City, US	daily low min	0.6 C (33.1 F)	2.7 C (4.9 F)	94 years	45 of 100 (Notable)
12 September 2011	Tyler Pounds Fld, US	daily high max	38.9 C (102.0 F)	2.2 C (4.0 F)	115 years	45 of 100 (Notable)
12 September 2011	Havelund, SE	daily rain	41.5 mm (1.6 in)	16.4 mm (0.6 in)	53 years	44 of 100 (Notable)
12 September 2011	Gatesville, US	daily high max	40.0 C (104.0 F)	1.7 C (3.1 F)	100 years	44 of 100 (Notable)
12 September 2011	Lufkin Angelina Co AP, US	daily high max	39.4 C (102.9 F)	1.6 C (2.9 F)	101 years	44 of 100 (Notable)
12 September 2011	Halden, NO	daily rain	35.5 mm (1.4 in)	12.0 mm (0.5 in)	53 years	43 of 100 (Notable)
12 September 2011	Falfurrias, US	daily low min	16.1 C (61.0 F)	0.6 C (1.1 F)	104 years	42 of 100 (Notable)
12 September 2011	Sugar Land, US	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	98 years	42 of 100 (Notable)
12 September 2011	Arad, RO	daily high min	18.9 C (66.0 F)	0.7 C (1.3 F)	108 years	41 of 100 (Notable)
12 September 2011	Adjuntas 2 NW, PR	daily rain	129.3 mm (5.1 in)	76.0 mm (3.0 in)	36 years	41 of 100 (Notable)
12 September 2011	Gila Bend 2SE, US	daily rain	35.6 mm (1.4 in)	31.8 mm (1.3 in)	2 years	41 of 100 (Notable)
12 September 2011	Pendleton Dwtn, US	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	118 years	41 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 2011

Records set or tied on this calendar date in each year from 1793 to 2011. 2011 had 988 records.

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

Records on 09-12 in each year
Year	Records
1793	2
1809	1
1813	1
1814	2
1834	1
1837	2
1839	1
1847	1
1848	1
1854	4
1859	2
1860	2
1865	2
1866	1
1867	1
1868	2
1869	1
1872	2
1876	1
1878	1
1880	1
1881	1
1882	1
1884	2
1885	2
1886	1
1887	2
1888	2
1889	1
1891	4
1892	1
1893	4
1894	1
1895	5
1896	2
1897	3
1898	3
1899	4
1900	1
1901	5
1902	11
1903	18
1904	7
1905	8
1906	24
1907	11
1908	12
1909	11
1910	4
1911	15
1912	20
1913	12
1914	49
1915	71
1916	21
1917	231
1918	42
1919	69
1920	49
1921	60
1922	136
1923	33
1924	177
1925	443
1926	89
1927	339
1928	155
1929	118
1930	198
1931	648
1932	199
1933	360
1934	176
1935	441
1936	515
1937	318
1938	332
1939	702
1940	891
1941	172
1942	337
1943	544
1944	393
1945	414
1946	302
1947	596
1948	292
1949	512
1950	578
1951	399
1952	575
1953	515
1954	313
1955	457
1956	389
1957	727
1958	783
1959	536
1960	772
1961	750
1962	407
1963	466
1964	836
1965	459
1966	416
1967	510
1968	428
1969	558
1970	619
1971	593
1972	430
1973	588
1974	575
1975	1,102
1976	539
1977	524
1978	952
1979	765
1980	511
1981	424
1982	993
1983	915
1984	700
1985	876
1986	787
1987	686
1988	997
1989	1,313
1990	1,001
1991	672
1992	767
1993	798
1994	550
1995	532
1996	1,014
1997	737
1998	1,770
1999	938
2000	1,188
2001	797
2002	883
2003	830
2004	653
2005	1,032
2006	963
2007	776
2008	1,213
2009	876
2010	939
2011	988
2012	639
2013	1,066
2014	1,374
2015	704
2016	748
2017	1,114
2018	595
2019	884
2020	566
2021	513
2022	739
2023	844
2024	1,009
2025	433
2026	627

Download the Data

Data for records on 2011-09-12: 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	680
20 to 40	13
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	1