Weather Records on 11 September 1947

611 weather records were set or tied worldwide on 11 September 1947. Highest significance: Sarila, IN.

Key Facts for 11 September 1947

On 11 September 1947, 611 weather records were set or tied at long-record stations worldwide.
388 were record highs and 51 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 19 monthly and 590 daily.
Sarila set a monthly record daily precipitation of 253.7 mm (10.0 in) on 11 September 1947.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 422 records.

Record Map

611 stations

611 station records on 11 September 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sarila	India	Record daily precipitation	253.7 mm (10.0 in)	56 of 100 (Notable)
Harrison 1 NNW	United States	Record daily precipitation	63.5 mm (2.5 in)	50 of 100 (Notable)
Purdum	United States	Record daily precipitation	50.8 mm (2.0 in)	49 of 100 (Notable)
Vaikom	India	Record daily precipitation	167.6 mm (6.6 in)	48 of 100 (Notable)
Ewa Plantation 741	United States	Record daily precipitation	34.8 mm (1.4 in)	47 of 100 (Notable)
Chadron 3SW	United States	Record daily precipitation	35.6 mm (1.4 in)	46 of 100 (Notable)
Ardmore 1 NW	United States	Record daily precipitation	39.4 mm (1.6 in)	46 of 100 (Notable)
Nevada Wtp	United States	Record daily precipitation	124.7 mm (4.9 in)	42 of 100 (Notable)
Lapeer 2 SE	United States	Record daily precipitation	67.1 mm (2.6 in)	40 of 100 (Notable)
Schuyler	United States	Record daily precipitation	62.5 mm (2.5 in)	39 of 100 (Notable)
Stewart	Canada	Record daily precipitation	53.6 mm (2.1 in)	38 of 100 (Notable)
Satna	India	Record daily precipitation	95.8 mm (3.8 in)	37 of 100 (Notable)
Tahlequah	United States	Record daily precipitation	69.9 mm (2.8 in)	36 of 100 (Notable)
Whiting	United States	Record daily precipitation	49.5 mm (1.9 in)	34 of 100 (Routine)
Dwight	United States	Record daily precipitation	52.6 mm (2.1 in)	33 of 100 (Routine)
Clinton	United States	Record daily precipitation	51.3 mm (2.0 in)	33 of 100 (Routine)
Hebron	United States	Record daily precipitation	42.9 mm (1.7 in)	33 of 100 (Routine)
Amiandos	Cyprus	Record daily precipitation	28.0 mm (1.1 in)	32 of 100 (Routine)
Kovvur	India	Record daily precipitation	58.4 mm (2.3 in)	32 of 100 (Routine)
Shikarpur	India	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)
Ajaigarh	India	Record daily precipitation	196.9 mm (7.8 in)	31 of 100 (Routine)
Greenfield	United States	Record daily precipitation	57.4 mm (2.3 in)	31 of 100 (Routine)
Dharamjaigarh	India	Record daily precipitation	88.9 mm (3.5 in)	30 of 100 (Routine)
Big St Germain Dam	United States	Record daily precipitation	43.9 mm (1.7 in)	30 of 100 (Routine)
Graz	Austria	Record high maximum temperature	30.2 C (86.4 F)	29 of 100 (Routine)
Howell Wwtp	United States	Record daily precipitation	36.1 mm (1.4 in)	29 of 100 (Routine)
Tower 2S	United States	Record daily precipitation	117.9 mm (4.6 in)	29 of 100 (Routine)
Claremore 2 ENE	United States	Record daily precipitation	77.0 mm (3.0 in)	29 of 100 (Routine)
Wawaitin	Canada	Record daily precipitation	70.9 mm (2.8 in)	28 of 100 (Routine)
Collingwood	Canada	Record high minimum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Moncton	Canada	Record high maximum temperature	31.7 C (89.1 F)	28 of 100 (Routine)
Fremont	United States	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Springfield	United States	Record daily precipitation	53.1 mm (2.1 in)	28 of 100 (Routine)
Chicoutimi	Canada	Record high maximum temperature	30.0 C (86.0 F)	27 of 100 (Routine)
Big Rapids Wtp	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Kohala Mis 175.1	United States	Record high minimum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Gladwin	United States	Record daily precipitation	48.3 mm (1.9 in)	27 of 100 (Routine)
Wallaceburg	Canada	Record daily precipitation	41.9 mm (1.6 in)	26 of 100 (Routine)
Dindori	India	Record daily precipitation	102.9 mm (4.1 in)	26 of 100 (Routine)
Soraon	India	Record daily precipitation	55.1 mm (2.2 in)	26 of 100 (Routine)
Kanpur	India	Record daily precipitation	106.4 mm (4.2 in)	26 of 100 (Routine)
Mackinaw City 2	United States	Record high minimum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Owen Sound	Canada	Record high minimum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Amos	Canada	Record high minimum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Baghpat Sr	India	Record daily precipitation	92.5 mm (3.6 in)	25 of 100 (Routine)
Dalmau	India	Record daily precipitation	49.3 mm (1.9 in)	25 of 100 (Routine)
Alma	United States	Record high minimum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Mio Hydro Plt	United States	Record daily precipitation	37.1 mm (1.5 in)	25 of 100 (Routine)
Albert Lea 3SE	United States	Record daily precipitation	48.8 mm (1.9 in)	25 of 100 (Routine)
State College	United States	Record high minimum temperature	22.2 C (72.0 F)	25 of 100 (Routine)
Hayes Center 1NW	United States	Record low maximum temperature	13.9 C (57.0 F)	25 of 100 (Routine)
N Bend SW Oregon Rgnl AP	United States	Record high maximum temperature	32.8 C (91.0 F)	25 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	30.6 C (87.1 F)	24 of 100 (Routine)
Antigonish	Canada	Record high maximum temperature	32.8 C (91.0 F)	24 of 100 (Routine)
Hohenpeissenberg	Germany	Record high maximum temperature	27.0 C (80.6 F)	24 of 100 (Routine)
Rockville	United States	Record daily precipitation	31.2 mm (1.2 in)	24 of 100 (Routine)
Ft Robinson	United States	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Hico	United States	Record daily precipitation	49.5 mm (1.9 in)	24 of 100 (Routine)
Meadow Valley Rs	United States	Record high minimum temperature	25.0 C (77.0 F)	24 of 100 (Routine)
Bathurst	Canada	Record high maximum temperature	31.1 C (88.0 F)	23 of 100 (Routine)

Counts by Type and Timescale

611 records

Records set or tied on 11 September 1947 by type: Highest daily maximum 67, Lowest daily maximum 28, Highest daily minimum 321, Lowest daily minimum 23, Heaviest daily rainfall 172.

Records on 11 September 1947 by type
Record type	Records
Highest daily maximum	67
Lowest daily maximum	28
Highest daily minimum	321
Lowest daily minimum	23
Heaviest daily rainfall	172
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 September 1947 by timescale: all-time 2, monthly 19, daily 590.

How Much Records Were Beaten By

458 broken records

Margins by which the 458 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.5. Ties are not counted.

Top 20 by Significance

11 September 1947

Top 20 records on 11 September 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1947	Sarila, IN	monthly rain	253.7 mm (10.0 in)	127.5 mm (5.0 in)	7 years	56 of 100 (Notable)
11 September 1947	Harrison 1 NNW, US	daily rain	63.5 mm (2.5 in)	35.6 mm (1.4 in)	40 years	50 of 100 (Notable)
11 September 1947	Purdum, US	daily rain	50.8 mm (2.0 in)	38.9 mm (1.5 in)	18 years	49 of 100 (Notable)
11 September 1947	Vaikom, IN	daily rain	167.6 mm (6.6 in)	111.7 mm (4.4 in)	16 years	48 of 100 (Notable)
11 September 1947	Ewa Plantation 741, US	daily rain	34.8 mm (1.4 in)	29.0 mm (1.1 in)	29 years	47 of 100 (Notable)
11 September 1947	Chadron 3SW, US	daily rain	35.6 mm (1.4 in)	27.0 mm (1.1 in)	32 years	46 of 100 (Notable)
11 September 1947	Ardmore 1 NW, US	daily rain	39.4 mm (1.6 in)	30.0 mm (1.2 in)	8 years	46 of 100 (Notable)
11 September 1947	Nevada Wtp, US	daily rain	124.7 mm (4.9 in)	45.5 mm (1.8 in)	48 years	42 of 100 (Notable)
11 September 1947	Lapeer 2 SE, US	monthly rain	67.1 mm (2.6 in)	11.2 mm (0.4 in)	48 years	40 of 100 (Notable)
11 September 1947	Schuyler, US	daily rain	62.5 mm (2.5 in)	46.8 mm (1.8 in)	14 years	39 of 100 (Notable)
11 September 1947	Stewart, CA	daily rain	53.6 mm (2.1 in)	30.2 mm (1.2 in)	26 years	38 of 100 (Notable)
11 September 1947	Satna, IN	daily rain	95.8 mm (3.8 in)	43.5 mm (1.7 in)	40 years	37 of 100 (Notable)
11 September 1947	Tahlequah, US	daily rain	69.9 mm (2.8 in)	33.1 mm (1.3 in)	46 years	36 of 100 (Notable)
11 September 1947	Whiting, US	daily rain	49.5 mm (1.9 in)	29.2 mm (1.1 in)	28 years	34 of 100 (Routine)
11 September 1947	Dwight, US	daily rain	52.6 mm (2.1 in)	25.9 mm (1.0 in)	25 years	33 of 100 (Routine)
11 September 1947	Clinton, US	daily rain	51.3 mm (2.0 in)	33.5 mm (1.3 in)	33 years	33 of 100 (Routine)
11 September 1947	Hebron, US	daily rain	42.9 mm (1.7 in)	25.6 mm (1.0 in)	48 years	33 of 100 (Routine)
11 September 1947	Amiandos, CY	daily rain	28.0 mm (1.1 in)	23.0 mm (0.9 in)	4 years	32 of 100 (Routine)
11 September 1947	Kovvur, IN	daily rain	58.4 mm (2.3 in)	37.3 mm (1.5 in)	34 years	32 of 100 (Routine)
11 September 1947	Shikarpur, IN	daily rain	30.5 mm (1.2 in)	16.3 mm (0.6 in)	44 years	32 of 100 (Routine)

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 1947

Records set or tied on this calendar date in each year from 1809 to 1947. 1947 had 611 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 1947-09-11: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	419
20 to 40	31
40 to 60	6
60 to 80	0
80 to 100	0
100 to 120	1
120 to 140	1