Weather Records on 17 September 2011

1,116 weather records were set or tied worldwide on 17 September 2011. Highest significance: Cottbus, DE.

Key Facts for 17 September 2011

On 17 September 2011, 1,116 weather records were set or tied at long-record stations worldwide.
318 were record highs and 614 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 24 monthly and 1,092 daily.
Cottbus set a daily record precipitation of 38.9 mm (1.5 in) on 17 September 2011.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 419 records.

Record Map

1,116 stations

1,116 station records on 17 September 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cottbus	Germany	Record daily precipitation	38.9 mm (1.5 in)	72 of 100 (Major)
Garsebach Bei Meissen	Germany	Record daily precipitation	39.6 mm (1.6 in)	65 of 100 (Major)
Lindesnes Fyr	Norway	Record daily precipitation	49.1 mm (1.9 in)	60 of 100 (Major)
Aksakovo	Russia	Record daily precipitation	40.0 mm (1.6 in)	56 of 100 (Notable)
Bad-Sohl Elster	Germany	Record daily precipitation	51.0 mm (2.0 in)	54 of 100 (Notable)
Hof	Germany	Record daily precipitation	40.0 mm (1.6 in)	53 of 100 (Notable)
Oschatz	Germany	Record daily precipitation	33.0 mm (1.3 in)	53 of 100 (Notable)
Smithfield	United States	Record low maximum temperature	15.0 C (59.0 F)	52 of 100 (Notable)
Tarimoro	Mexico	Record daily precipitation	68.8 mm (2.7 in)	51 of 100 (Notable)
Waldron	United States	Record low maximum temperature	13.9 C (57.0 F)	51 of 100 (Notable)
Deer Creek Dam	United States	Record daily precipitation	40.6 mm (1.6 in)	51 of 100 (Notable)
Conway	United States	Record low maximum temperature	17.2 C (63.0 F)	50 of 100 (Notable)
Jacksonville Beach	United States	Record daily precipitation	275.3 mm (10.8 in)	50 of 100 (Notable)
Selb/Oberfranken-Lauterbach	Germany	Record daily precipitation	57.9 mm (2.3 in)	48 of 100 (Notable)
Warrenton 1 N	United States	Record low maximum temperature	11.1 C (52.0 F)	48 of 100 (Notable)
Rocky Mt	United States	Record low maximum temperature	13.9 C (57.0 F)	48 of 100 (Notable)
Burr Oak 4S	United States	Record low maximum temperature	12.2 C (54.0 F)	47 of 100 (Notable)
Chapman	United States	Record low maximum temperature	15.0 C (59.0 F)	47 of 100 (Notable)
Himeji	Japan	Record daily precipitation	113.0 mm (4.4 in)	46 of 100 (Notable)
Presa la Codorniz	Mexico	Record daily precipitation	50.3 mm (2.0 in)	46 of 100 (Notable)
Sumter	United States	Record low maximum temperature	16.1 C (61.0 F)	46 of 100 (Notable)
Gatesville	United States	Record high minimum temperature	29.4 C (84.9 F)	46 of 100 (Notable)
El Barril	Mexico	Record low minimum temperature	11.7 C (53.1 F)	45 of 100 (Notable)
Pocahontas 1	United States	Record low maximum temperature	18.3 C (64.9 F)	45 of 100 (Notable)
Houston	United States	Record low maximum temperature	14.4 C (57.9 F)	45 of 100 (Notable)
Banner Elk	United States	Record low maximum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Farmville	United States	Record low maximum temperature	17.2 C (63.0 F)	45 of 100 (Notable)
Schmieritz-Weltwitz	Germany	Record daily precipitation	27.4 mm (1.1 in)	44 of 100 (Notable)
Hardy	United States	Record low maximum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Elkader 6 SSW	United States	Record low maximum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Brunswick	United States	Record low maximum temperature	12.8 C (55.0 F)	44 of 100 (Notable)
Lynch	United States	Record low maximum temperature	11.7 C (53.1 F)	44 of 100 (Notable)
Marshall	United States	Record low maximum temperature	12.8 C (55.0 F)	44 of 100 (Notable)
Allerton	United States	Record low maximum temperature	12.2 C (54.0 F)	43 of 100 (Notable)
Newton	United States	Record low maximum temperature	12.2 C (54.0 F)	43 of 100 (Notable)
Sedan	United States	Record low maximum temperature	13.9 C (57.0 F)	43 of 100 (Notable)
Marshall	United States	Record low maximum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Richmond	United States	Record daily precipitation	26.2 mm (1.0 in)	43 of 100 (Notable)
Aue	Germany	Record daily precipitation	31.5 mm (1.2 in)	42 of 100 (Notable)
Lista Fyr	Norway	Record daily precipitation	36.9 mm (1.5 in)	42 of 100 (Notable)
Calico Rock 2 WSW	United States	Record low maximum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Marshalltown	United States	Record low maximum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Toledo 3N	United States	Record low maximum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Doniphan	United States	Record low maximum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Tarboro 1 S	United States	Record low maximum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Prairie du Chien	United States	Record low maximum temperature	12.2 C (54.0 F)	42 of 100 (Notable)
Ebrach	Germany	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Washington	United States	Record low maximum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Conception	United States	Record low maximum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Eldon	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Princeton	United States	Record low maximum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Pioche	United States	Record daily precipitation	25.1 mm (1.0 in)	41 of 100 (Notable)
Durham	United States	Record low maximum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Edenton	United States	Record low maximum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Elizabethtown	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Molino Chumpan	Mexico	Record daily precipitation	84.8 mm (3.3 in)	40 of 100 (Notable)
Aledo	United States	Record low maximum temperature	11.7 C (53.1 F)	40 of 100 (Notable)
Grundy Ctr	United States	Record low maximum temperature	11.7 C (53.1 F)	40 of 100 (Notable)
Cassville 1 NE	United States	Record low maximum temperature	15.6 C (60.1 F)	40 of 100 (Notable)

Counts by Type and Timescale

1,116 records

Records set or tied on 17 September 2011 by type: Highest daily maximum 161, Lowest daily maximum 514, Highest daily minimum 157, Lowest daily minimum 100, Heaviest daily rainfall 184.

Records on 17 September 2011 by type
Record type	Records
Highest daily maximum	161
Lowest daily maximum	514
Highest daily minimum	157
Lowest daily minimum	100
Heaviest daily rainfall	184
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 September 2011 by timescale: all-time 0, monthly 24, daily 1,092.

How Much Records Were Beaten By

858 broken records

Margins by which the 858 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 71.8. Ties are not counted.

Top 20 by Significance

17 September 2011

Top 20 records on 17 September 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 2011	Cottbus, DE	daily rain	38.9 mm (1.5 in)	17.6 mm (0.7 in)	101 years	72 of 100 (Major)
17 September 2011	Garsebach Bei Meissen, DE	daily rain	39.6 mm (1.6 in)	19.6 mm (0.8 in)	84 years	65 of 100 (Major)
17 September 2011	Lindesnes Fyr, NO	daily rain	49.1 mm (1.9 in)	32.7 mm (1.3 in)	50 years	60 of 100 (Major)
17 September 2011	Aksakovo, RU	daily rain	40.0 mm (1.6 in)	22.1 mm (0.9 in)	33 years	56 of 100 (Notable)
17 September 2011	Bad-Sohl Elster, DE	monthly rain	51.0 mm (2.0 in)	12.1 mm (0.5 in)	59 years	54 of 100 (Notable)
17 September 2011	Hof, DE	daily rain	40.0 mm (1.6 in)	14.1 mm (0.6 in)	72 years	53 of 100 (Notable)
17 September 2011	Oschatz, DE	daily rain	33.0 mm (1.3 in)	20.4 mm (0.8 in)	24 years	53 of 100 (Notable)
17 September 2011	Smithfield, US	daily low max	15.0 C (59.0 F)	5.6 C (10.1 F)	93 years	52 of 100 (Notable)
17 September 2011	Tarimoro, MX	daily rain	68.8 mm (2.7 in)	42.9 mm (1.7 in)	40 years	51 of 100 (Notable)
17 September 2011	Waldron, US	daily low max	13.9 C (57.0 F)	7.2 C (13.0 F)	88 years	51 of 100 (Notable)
17 September 2011	Deer Creek Dam, US	daily rain	40.6 mm (1.6 in)	27.6 mm (1.1 in)	14 years	51 of 100 (Notable)
17 September 2011	Conway, US	daily low max	17.2 C (63.0 F)	4.5 C (8.1 F)	108 years	50 of 100 (Notable)
17 September 2011	Jacksonville Beach, US	monthly rain	275.3 mm (10.8 in)	71.8 mm (2.8 in)	4 years	50 of 100 (Notable)
17 September 2011	Selb/Oberfranken-Lauterbach, DE	monthly rain	57.9 mm (2.3 in)	15.6 mm (0.6 in)	8 years	48 of 100 (Notable)
17 September 2011	Warrenton 1 N, US	daily low max	11.1 C (52.0 F)	4.5 C (8.1 F)	109 years	48 of 100 (Notable)
17 September 2011	Rocky Mt, US	daily low max	13.9 C (57.0 F)	3.9 C (7.0 F)	108 years	48 of 100 (Notable)
17 September 2011	Burr Oak 4S, US	daily low max	12.2 C (54.0 F)	4.5 C (8.1 F)	109 years	47 of 100 (Notable)
17 September 2011	Chapman, US	daily low max	15.0 C (59.0 F)	6.1 C (11.0 F)	86 years	47 of 100 (Notable)
17 September 2011	Himeji, JP	daily rain	113.0 mm (4.4 in)	65.1 mm (2.6 in)	45 years	46 of 100 (Notable)
17 September 2011	Presa la Codorniz, MX	daily rain	50.3 mm (2.0 in)	29.5 mm (1.2 in)	44 years	46 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

1796 to 2011

Records set or tied on this calendar date in each year from 1796 to 2011. 2011 had 1,116 records.

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

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 2011-09-17: 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	798
10 to 20	37
20 to 30	12
30 to 40	4
40 to 50	2
50 to 60	3
60 to 70	1
70 to 80	1