Weather Records on 15 September 2011

1,170 weather records were set or tied worldwide on 15 September 2011. Highest significance: Balasore, IN.

Key Facts for 15 September 2011

On 15 September 2011, 1,170 weather records were set or tied at long-record stations worldwide.
503 were record highs and 491 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 26 monthly and 1,143 daily.
Balasore set a daily record precipitation of 124.0 mm (4.9 in) on 15 September 2011.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 408 records.

Record Map

1,170 stations

1,170 station records on 15 September 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Balasore	India	Record daily precipitation	124.0 mm (4.9 in)	64 of 100 (Major)
Tucson Intl AP	United States	Record daily precipitation	72.1 mm (2.8 in)	58 of 100 (Notable)
Potosi 4 SW	United States	Record daily precipitation	62.0 mm (2.4 in)	56 of 100 (Notable)
Signal Peak	United States	Record daily precipitation	76.2 mm (3.0 in)	51 of 100 (Notable)
Prairie du Rocher 3 WNW	United States	Record daily precipitation	66.0 mm (2.6 in)	49 of 100 (Notable)
Agate 3 E	United States	Record low maximum temperature	5.6 C (42.1 F)	48 of 100 (Notable)
Boulder	United States	Record daily precipitation	35.6 mm (1.4 in)	47 of 100 (Notable)
Tucumcari 4 NE	United States	Record daily precipitation	45.0 mm (1.8 in)	47 of 100 (Notable)
Vale	United States	Record high minimum temperature	17.8 C (64.0 F)	46 of 100 (Notable)
Paris 3 ESE	United States	Record daily precipitation	40.4 mm (1.6 in)	46 of 100 (Notable)
Hill City Muni AP	United States	Record low maximum temperature	10.0 C (50.0 F)	46 of 100 (Notable)
Waterdale	United States	Record daily precipitation	39.9 mm (1.6 in)	45 of 100 (Notable)
Hoxie	United States	Record low maximum temperature	8.9 C (48.0 F)	45 of 100 (Notable)
Ocate 2 NW	United States	Record daily precipitation	58.7 mm (2.3 in)	45 of 100 (Notable)
Goodland	United States	Record low maximum temperature	7.8 C (46.0 F)	45 of 100 (Notable)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	38.9 C (102.0 F)	44 of 100 (Notable)
Red Bud 2 S	United States	Record daily precipitation	86.1 mm (3.4 in)	44 of 100 (Notable)
Monroe City	United States	Record low minimum temperature	1.7 C (35.1 F)	44 of 100 (Notable)
Sugar Land	United States	Record high maximum temperature	38.3 C (100.9 F)	44 of 100 (Notable)
Waxahachie	United States	Record high maximum temperature	40.6 C (105.1 F)	44 of 100 (Notable)
Winfield 3NE	United States	Record low maximum temperature	13.9 C (57.0 F)	43 of 100 (Notable)
Cuero	United States	Record high maximum temperature	39.4 C (102.9 F)	43 of 100 (Notable)
Bridgeport	United States	Record low maximum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Gothenburg	United States	Record low maximum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Pierce 1 E	United States	Record high maximum temperature	39.4 C (102.9 F)	41 of 100 (Notable)
Prairie du Chien	United States	Record low minimum temperature	-2.8 C (27.0 F)	41 of 100 (Notable)
Cheyenne Wells 2NE	United States	Record low maximum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Julesburg	United States	Record low maximum temperature	10.6 C (51.1 F)	40 of 100 (Notable)
Ottawa 4SW	United States	Record low maximum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Watseka Public Works	United States	Record low minimum temperature	2.8 C (37.0 F)	40 of 100 (Notable)
Onawa 3NW	United States	Record low minimum temperature	-1.1 C (30.0 F)	40 of 100 (Notable)
S Haven	United States	Record low maximum temperature	14.4 C (57.9 F)	40 of 100 (Notable)
Madrid	United States	Record low maximum temperature	12.2 C (54.0 F)	40 of 100 (Notable)
Elk	United States	Record daily precipitation	42.4 mm (1.7 in)	40 of 100 (Notable)
Raton Fltr Plt	United States	Record daily precipitation	31.8 mm (1.3 in)	40 of 100 (Notable)
Yoongarillup	Australia	Record daily precipitation	43.0 mm (1.7 in)	39 of 100 (Notable)
Canon City	United States	Record daily precipitation	28.2 mm (1.1 in)	39 of 100 (Notable)
Wray	United States	Record low maximum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Ft Dodge 5NNW	United States	Record low minimum temperature	0.0 C (32.0 F)	39 of 100 (Notable)
Munising	United States	Record low maximum temperature	9.4 C (48.9 F)	39 of 100 (Notable)
Linjiang	China	Record daily precipitation	37.3 mm (1.5 in)	38 of 100 (Notable)
Forest City 2 NNE	United States	Record low minimum temperature	-1.1 C (30.0 F)	38 of 100 (Notable)
Tekamah	United States	Record low minimum temperature	0.6 C (33.1 F)	38 of 100 (Notable)
Valmora	United States	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Brownwood 2NE	United States	Record high maximum temperature	40.0 C (104.0 F)	38 of 100 (Notable)
Vega 2NW	United States	Record daily precipitation	27.9 mm (1.1 in)	38 of 100 (Notable)
Maradi	Niger	Record daily precipitation	41.9 mm (1.6 in)	37 of 100 (Notable)
Howell Wwtp	United States	Record low minimum temperature	2.8 C (37.0 F)	37 of 100 (Notable)
Cleburne	United States	Record high maximum temperature	41.1 C (106.0 F)	37 of 100 (Notable)
Intl Falls Intl AP	United States	Record low minimum temperature	-7.2 C (19.0 F)	37 of 100 (Notable)
La Yerbabuena	Mexico	Record low minimum temperature	8.3 C (46.9 F)	36 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	92.7 mm (3.6 in)	36 of 100 (Notable)
Doniphan	United States	Record daily precipitation	42.9 mm (1.7 in)	36 of 100 (Notable)
N Las Vegas	United States	Record low maximum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Fredonia	United States	Record low maximum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Dalian	China	Record daily precipitation	36.2 mm (1.4 in)	35 of 100 (Notable)
La Huasteca	Mexico	Record daily precipitation	106.4 mm (4.2 in)	35 of 100 (Notable)
Rush 1N	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Timpanogos Cave	United States	Record daily precipitation	26.2 mm (1.0 in)	35 of 100 (Notable)
El Manantial	Mexico	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)

Counts by Type and Timescale

1,170 records

Records set or tied on 15 September 2011 by type: Highest daily maximum 286, Lowest daily maximum 243, Highest daily minimum 217, Lowest daily minimum 248, Heaviest daily rainfall 176.

Records on 15 September 2011 by type
Record type	Records
Highest daily maximum	286
Lowest daily maximum	243
Highest daily minimum	217
Lowest daily minimum	248
Heaviest daily rainfall	176
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 September 2011 by timescale: all-time 1, monthly 26, daily 1,143.

How Much Records Were Beaten By

812 broken records

Margins by which the 812 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 57.4. Ties are not counted.

Top 20 by Significance

15 September 2011

Top 20 records on 15 September 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 2011	Balasore, IN	daily rain	124.0 mm (4.9 in)	56.2 mm (2.2 in)	96 years	64 of 100 (Major)
15 September 2011	Tucson Intl AP, US	daily rain	72.1 mm (2.8 in)	56.4 mm (2.2 in)	41 years	58 of 100 (Notable)
15 September 2011	Potosi 4 SW, US	daily rain	62.0 mm (2.4 in)	27.7 mm (1.1 in)	116 years	56 of 100 (Notable)
15 September 2011	Signal Peak, US	monthly rain	76.2 mm (3.0 in)	25.4 mm (1.0 in)	24 years	51 of 100 (Notable)
15 September 2011	Prairie du Rocher 3 WNW, US	daily rain	66.0 mm (2.6 in)	40.6 mm (1.6 in)	58 years	49 of 100 (Notable)
15 September 2011	Agate 3 E, US	daily low max	5.6 C (42.1 F)	5.0 C (9.0 F)	108 years	48 of 100 (Notable)
15 September 2011	Boulder, US	daily rain	35.6 mm (1.4 in)	8.9 mm (0.35 in)	92 years	47 of 100 (Notable)
15 September 2011	Tucumcari 4 NE, US	daily rain	45.0 mm (1.8 in)	11.5 mm (0.5 in)	92 years	47 of 100 (Notable)
15 September 2011	Vale, US	daily high min	17.8 C (64.0 F)	2.8 C (5.0 F)	100 years	46 of 100 (Notable)
15 September 2011	Paris 3 ESE, US	daily rain	40.4 mm (1.6 in)	20.6 mm (0.8 in)	85 years	46 of 100 (Notable)
15 September 2011	Hill City Muni AP, US	daily low max	10.0 C (50.0 F)	4.4 C (7.9 F)	98 years	46 of 100 (Notable)
15 September 2011	Waterdale, US	daily rain	39.9 mm (1.6 in)	9.2 mm (0.36 in)	92 years	45 of 100 (Notable)
15 September 2011	Hoxie, US	daily low max	8.9 C (48.0 F)	3.3 C (5.9 F)	108 years	45 of 100 (Notable)
15 September 2011	Ocate 2 NW, US	daily rain	58.7 mm (2.3 in)	37.1 mm (1.5 in)	12 years	45 of 100 (Notable)
15 September 2011	Goodland, US	daily low max	7.8 C (46.0 F)	3.9 C (7.0 F)	98 years	45 of 100 (Notable)
15 September 2011	Ramos Arizpe (Smn), MX	monthly high max	38.9 C (102.0 F)	1.1 C (2.0 F)	80 years	44 of 100 (Notable)
15 September 2011	Red Bud 2 S, US	daily rain	86.1 mm (3.4 in)	57.4 mm (2.3 in)	5 years	44 of 100 (Notable)
15 September 2011	Monroe City, US	daily low min	1.7 C (35.1 F)	2.2 C (4.0 F)	106 years	44 of 100 (Notable)
15 September 2011	Sugar Land, US	daily high max	38.3 C (100.9 F)	1.6 C (2.9 F)	98 years	44 of 100 (Notable)
15 September 2011	Waxahachie, US	daily high max	40.6 C (105.1 F)	1.7 C (3.1 F)	100 years	44 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

1797 to 2011

Records set or tied on this calendar date in each year from 1797 to 2011. 2011 had 1,170 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 2011-09-15: 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 10	762
10 to 20	24
20 to 30	15
30 to 40	5
40 to 50	3
50 to 60	3