Weather Records on 15 September 2021

467 weather records were set or tied worldwide on 15 September 2021. Highest significance: Ville Platte, US.

Key Facts for 15 September 2021

On 15 September 2021, 467 weather records were set or tied at long-record stations worldwide.
260 were record highs and 64 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 11 monthly and 454 daily.
Ville Platte set a daily record precipitation of 152.4 mm (6.0 in) on 15 September 2021.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 413 records.

Record Map

467 stations

467 station records on 15 September 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ville Platte	United States	Record daily precipitation	152.4 mm (6.0 in)	72 of 100 (Major)
Calcutta/Alipore	India	Record daily precipitation	102.1 mm (4.0 in)	65 of 100 (Major)
Hagerstown 1E	United States	Record daily precipitation	62.5 mm (2.5 in)	62 of 100 (Major)
Poplarville Exp STN	United States	Record daily precipitation	79.2 mm (3.1 in)	62 of 100 (Major)
Donaldsonville 4 SW	United States	Record daily precipitation	148.3 mm (5.8 in)	61 of 100 (Major)
Cheraw 1 N	United States	Record daily precipitation	38.1 mm (1.5 in)	59 of 100 (Notable)
Bardstown 5E	United States	Record daily precipitation	95.0 mm (3.7 in)	58 of 100 (Notable)
Natchez	United States	Record daily precipitation	114.3 mm (4.5 in)	58 of 100 (Notable)
Thibodaux 4 SE	United States	Record daily precipitation	87.9 mm (3.5 in)	57 of 100 (Notable)
Kristianstad	Sweden	Record daily precipitation	67.0 mm (2.6 in)	56 of 100 (Notable)
Cooperstown	United States	Record daily precipitation	76.2 mm (3.0 in)	56 of 100 (Notable)
Trier-Zewen	Germany	Record daily precipitation	56.2 mm (2.2 in)	55 of 100 (Notable)
Trier-Petrisberg	Germany	Record daily precipitation	62.7 mm (2.5 in)	54 of 100 (Notable)
Pendra Road	India	Record daily precipitation	182.9 mm (7.2 in)	54 of 100 (Notable)
San Sebastian - Igueldo	Spain	Record daily precipitation	84.2 mm (3.3 in)	53 of 100 (Notable)
Gonzales	United States	Record daily precipitation	119.4 mm (4.7 in)	53 of 100 (Notable)
Biloxi	United States	Record daily precipitation	147.6 mm (5.8 in)	50 of 100 (Notable)
Brookville	United States	Record daily precipitation	52.3 mm (2.1 in)	49 of 100 (Notable)
Marksville	United States	Record daily precipitation	167.6 mm (6.6 in)	48 of 100 (Notable)
Beaver Fire Twr	United States	Record daily precipitation	101.6 mm (4.0 in)	47 of 100 (Notable)
Jeanerette 5 NW	United States	Record daily precipitation	73.4 mm (2.9 in)	46 of 100 (Notable)
Beaumont City	United States	Record low maximum temperature	25.0 C (77.0 F)	45 of 100 (Notable)
Bartow 1SE	United States	Record daily precipitation	95.0 mm (3.7 in)	44 of 100 (Notable)
Wauchula	United States	Record daily precipitation	50.8 mm (2.0 in)	44 of 100 (Notable)
Walnut 4S	United States	Record daily precipitation	59.2 mm (2.3 in)	44 of 100 (Notable)
Ponchatoula 4 E	United States	Record daily precipitation	109.7 mm (4.3 in)	44 of 100 (Notable)
Napoleonville	United States	Record daily precipitation	93.2 mm (3.7 in)	43 of 100 (Notable)
Bowling Green Warren Co AP	United States	Record daily precipitation	65.8 mm (2.6 in)	43 of 100 (Notable)
Homburg/Saar	Germany	Record daily precipitation	29.3 mm (1.2 in)	42 of 100 (Notable)
Baton Rouge Sherwood	United States	Record daily precipitation	104.4 mm (4.1 in)	42 of 100 (Notable)
Bunkie	United States	Record daily precipitation	269.2 mm (10.6 in)	42 of 100 (Notable)
Livingston	United States	Record daily precipitation	114.6 mm (4.5 in)	42 of 100 (Notable)
Kane 1NNE	United States	Record high minimum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Carencro	United States	Record daily precipitation	108.0 mm (4.3 in)	41 of 100 (Notable)
Grand Coteau	United States	Record daily precipitation	49.5 mm (1.9 in)	41 of 100 (Notable)
Crystal Springs Exp STN	United States	Record low maximum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Crystal Springs Exp STN	United States	Record daily precipitation	33.0 mm (1.3 in)	41 of 100 (Notable)
Liberty	United States	Record daily precipitation	84.6 mm (3.3 in)	41 of 100 (Notable)
Macon Middle Ga Rgnl AP	United States	Record daily precipitation	63.8 mm (2.5 in)	41 of 100 (Notable)
New Orleans Audubon	United States	Record daily precipitation	104.9 mm (4.1 in)	41 of 100 (Notable)
Schluchtern-Herolz	Germany	Record daily precipitation	27.0 mm (1.1 in)	40 of 100 (Notable)
Nouakchott	Mauritania	Record high minimum temperature	30.7 C (87.3 F)	40 of 100 (Notable)
St Joseph 3 N	United States	Record daily precipitation	37.3 mm (1.5 in)	40 of 100 (Notable)
St Francisville	United States	Record daily precipitation	95.0 mm (3.7 in)	39 of 100 (Notable)
Jakutsk	Russia	Record high minimum temperature	8.6 C (47.5 F)	38 of 100 (Notable)
Nurnberg	Germany	Record high minimum temperature	16.7 C (62.1 F)	37 of 100 (Notable)
Dauphin Is #2	United States	Record daily precipitation	91.9 mm (3.6 in)	37 of 100 (Notable)
Wupatki Nm	United States	Record high minimum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Bayou Sorrel Lock	United States	Record daily precipitation	76.2 mm (3.0 in)	37 of 100 (Notable)
Savannah 6 SW	United States	Record daily precipitation	91.9 mm (3.6 in)	37 of 100 (Notable)
McComb AP	United States	Record daily precipitation	62.2 mm (2.4 in)	37 of 100 (Notable)
Olands Sodra Udde	Sweden	Record daily precipitation	29.7 mm (1.2 in)	36 of 100 (Notable)
Columbia	United States	Record daily precipitation	67.6 mm (2.7 in)	36 of 100 (Notable)
Hattiesburg 5SW	United States	Record daily precipitation	51.3 mm (2.0 in)	36 of 100 (Notable)
Union Church	United States	Record daily precipitation	87.6 mm (3.4 in)	36 of 100 (Notable)
Pomme de Terre Dam	United States	Record daily precipitation	65.0 mm (2.6 in)	36 of 100 (Notable)
Yibin	China	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Plauen	Germany	Record high minimum temperature	17.1 C (62.8 F)	34 of 100 (Routine)
Zagreb-Gric	Croatia	Record high maximum temperature	32.5 C (90.5 F)	34 of 100 (Routine)
Barcelona/Aeropuerto	Spain	Record high minimum temperature	23.8 C (74.8 F)	34 of 100 (Routine)

Counts by Type and Timescale

467 records

Records set or tied on 15 September 2021 by type: Highest daily maximum 78, Lowest daily maximum 45, Highest daily minimum 182, Lowest daily minimum 19, Heaviest daily rainfall 143.

Records on 15 September 2021 by type
Record type	Records
Highest daily maximum	78
Lowest daily maximum	45
Highest daily minimum	182
Lowest daily minimum	19
Heaviest daily rainfall	143
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 September 2021 by timescale: all-time 2, monthly 11, daily 454.

How Much Records Were Beaten By

381 broken records

Margins by which the 381 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 130.8. Ties are not counted.

Top 20 by Significance

15 September 2021

Top 20 records on 15 September 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 2021	Ville Platte, US	daily rain	152.4 mm (6.0 in)	94.7 mm (3.7 in)	79 years	72 of 100 (Major)
15 September 2021	Calcutta/Alipore, IN	daily rain	102.1 mm (4.0 in)	54.3 mm (2.1 in)	110 years	65 of 100 (Major)
15 September 2021	Hagerstown 1E, US	daily rain	62.5 mm (2.5 in)	32.3 mm (1.3 in)	104 years	62 of 100 (Major)
15 September 2021	Poplarville Exp STN, US	daily rain	79.2 mm (3.1 in)	41.1 mm (1.6 in)	100 years	62 of 100 (Major)
15 September 2021	Donaldsonville 4 SW, US	daily rain	148.3 mm (5.8 in)	108.7 mm (4.3 in)	39 years	61 of 100 (Major)
15 September 2021	Cheraw 1 N, US	daily rain	38.1 mm (1.5 in)	23.1 mm (0.9 in)	71 years	59 of 100 (Notable)
15 September 2021	Bardstown 5E, US	daily rain	95.0 mm (3.7 in)	59.9 mm (2.4 in)	56 years	58 of 100 (Notable)
15 September 2021	Natchez, US	daily rain	114.3 mm (4.5 in)	63.0 mm (2.5 in)	50 years	58 of 100 (Notable)
15 September 2021	Thibodaux 4 SE, US	daily rain	87.9 mm (3.5 in)	76.2 mm (3.0 in)	27 years	57 of 100 (Notable)
15 September 2021	Kristianstad, SE	monthly rain	67.0 mm (2.6 in)	10.6 mm (0.4 in)	56 years	56 of 100 (Notable)
15 September 2021	Cooperstown, US	daily rain	76.2 mm (3.0 in)	18.8 mm (0.7 in)	108 years	56 of 100 (Notable)
15 September 2021	Trier-Zewen, DE	monthly rain	56.2 mm (2.2 in)	11.4 mm (0.4 in)	53 years	55 of 100 (Notable)
15 September 2021	Trier-Petrisberg, DE	monthly rain	62.7 mm (2.5 in)	12.7 mm (0.5 in)	53 years	54 of 100 (Notable)
15 September 2021	Pendra Road, IN	daily rain	182.9 mm (7.2 in)	130.8 mm (5.1 in)	16 years	54 of 100 (Notable)
15 September 2021	San Sebastian - Igueldo, ES	daily rain	84.2 mm (3.3 in)	45.5 mm (1.8 in)	35 years	53 of 100 (Notable)
15 September 2021	Gonzales, US	daily rain	119.4 mm (4.7 in)	86.4 mm (3.4 in)	32 years	53 of 100 (Notable)
15 September 2021	Biloxi, US	daily rain	147.6 mm (5.8 in)	86.1 mm (3.4 in)	27 years	50 of 100 (Notable)
15 September 2021	Brookville, US	daily rain	52.3 mm (2.1 in)	21.6 mm (0.9 in)	83 years	49 of 100 (Notable)
15 September 2021	Marksville, US	daily rain	167.6 mm (6.6 in)	128.5 mm (5.1 in)	12 years	48 of 100 (Notable)
15 September 2021	Beaver Fire Twr, US	daily rain	101.6 mm (4.0 in)	96.8 mm (3.8 in)	24 years	47 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 2021

Records set or tied on this calendar date in each year from 1797 to 2021. 2021 had 467 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 2021-09-15: 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 20	333
20 to 40	19
40 to 60	13
60 to 80	8
80 to 100	5
100 to 120	1
120 to 140	2