Weather Records on 12 September 1947

596 weather records were set or tied worldwide on 12 September 1947. Highest significance: Niznij Novgorod, RU.

Key Facts for 12 September 1947

On 12 September 1947, 596 weather records were set or tied at long-record stations worldwide.
418 were record highs and 41 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 42 monthly and 554 daily.
Niznij Novgorod set a daily record precipitation of 31.9 mm (1.3 in) on 12 September 1947.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 412 records.

Record Map

596 stations

596 station records on 12 September 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Niznij Novgorod	Russia	Record daily precipitation	31.9 mm (1.3 in)	55 of 100 (Notable)
Mt Sterling	United States	Record daily precipitation	100.6 mm (4.0 in)	53 of 100 (Notable)
Amos	Canada	Record daily precipitation	52.3 mm (2.1 in)	49 of 100 (Notable)
Crescent City	United States	Record daily precipitation	108.7 mm (4.3 in)	47 of 100 (Notable)
Mc Connellsville Lk 7	United States	Record daily precipitation	57.2 mm (2.3 in)	46 of 100 (Notable)
Putbus	Germany	Record high maximum temperature	29.0 C (84.2 F)	44 of 100 (Notable)
Kodavasal	India	Record daily precipitation	85.9 mm (3.4 in)	43 of 100 (Notable)
Mauston 1 SE	United States	Record daily precipitation	72.1 mm (2.8 in)	43 of 100 (Notable)
Toronto	Canada	Record high minimum temperature	21.1 C (70.0 F)	39 of 100 (Notable)
Webbers Falls 5 WSW	United States	Record daily precipitation	80.3 mm (3.2 in)	39 of 100 (Notable)
Atlantic City Marina	United States	Record high minimum temperature	24.4 C (75.9 F)	38 of 100 (Notable)
Regensburg	Germany	Record high maximum temperature	31.6 C (88.9 F)	37 of 100 (Notable)
Porto Novo	India	Record daily precipitation	81.0 mm (3.2 in)	37 of 100 (Notable)
Circleville	United States	Record daily precipitation	64.8 mm (2.6 in)	37 of 100 (Notable)
Columbus Ohio St UNIV	United States	Record daily precipitation	46.2 mm (1.8 in)	37 of 100 (Notable)
Sandvig	Denmark	Record high maximum temperature	27.5 C (81.5 F)	35 of 100 (Notable)
Kristianstad	Sweden	Record high maximum temperature	27.5 C (81.5 F)	35 of 100 (Notable)
Elizabeth	United States	Record high minimum temperature	27.2 C (81.0 F)	35 of 100 (Notable)
Barkerville	Canada	Record daily snowfall	5.1 cm (2.0 in)	33 of 100 (Routine)
Goderich	Canada	Record high minimum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
La Pocatiere Cda	Canada	Record high minimum temperature	21.7 C (71.1 F)	33 of 100 (Routine)
Churu	India	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Gorlitz	Germany	Record high maximum temperature	30.4 C (86.7 F)	32 of 100 (Routine)
Visby_Flygplats	Sweden	Record high maximum temperature	22.2 C (72.0 F)	32 of 100 (Routine)
Eastport	United States	Record high minimum temperature	18.3 C (64.9 F)	32 of 100 (Routine)
Mt Healthy Exp Farm	United States	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Tranebjerg	Denmark	Record high maximum temperature	23.0 C (73.4 F)	31 of 100 (Routine)
Altastenberg	Germany	Record high minimum temperature	18.4 C (65.1 F)	31 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record high maximum temperature	32.4 C (90.3 F)	31 of 100 (Routine)
Alipurduar	India	Record daily precipitation	173.7 mm (6.8 in)	31 of 100 (Routine)
Penn Yan	United States	Record high minimum temperature	23.9 C (75.0 F)	31 of 100 (Routine)
Ottawa Cda	Canada	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
Gainesville UNIV of Fl	United States	Record daily precipitation	50.3 mm (2.0 in)	30 of 100 (Routine)
W Pt	United States	Record daily precipitation	73.2 mm (2.9 in)	30 of 100 (Routine)
Makapuu Point 724	United States	Record daily precipitation	45.7 mm (1.8 in)	30 of 100 (Routine)
Bethlehem	United States	Record high minimum temperature	21.7 C (71.1 F)	29 of 100 (Routine)
Moncton	Canada	Record high maximum temperature	31.7 C (89.1 F)	28 of 100 (Routine)
Valangiman	India	Record daily precipitation	51.6 mm (2.0 in)	28 of 100 (Routine)
Elatma	Russia	Record daily precipitation	36.7 mm (1.4 in)	28 of 100 (Routine)
Hope 3 NE	United States	Record daily precipitation	48.3 mm (1.9 in)	28 of 100 (Routine)
Humboldt	Canada	Record daily precipitation	25.9 mm (1.0 in)	27 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	32.2 C (90.0 F)	27 of 100 (Routine)
Sussex	Canada	Record high maximum temperature	31.7 C (89.1 F)	27 of 100 (Routine)
Chandragiri	India	Record daily precipitation	31.5 mm (1.2 in)	27 of 100 (Routine)
Tiruvarur	India	Record daily precipitation	77.5 mm (3.1 in)	27 of 100 (Routine)
Maastricht	Netherlands	Record high minimum temperature	19.7 C (67.5 F)	27 of 100 (Routine)
Dunderlandsdalen	Norway	Record daily precipitation	25.0 mm (1.0 in)	27 of 100 (Routine)
Bella Coola	Canada	Record daily precipitation	31.0 mm (1.2 in)	26 of 100 (Routine)
Wolfville	Canada	Record high maximum temperature	29.4 C (84.9 F)	26 of 100 (Routine)
Wrixum/Fohr	Germany	Record high minimum temperature	17.0 C (62.6 F)	26 of 100 (Routine)
Ariyalur	India	Record daily precipitation	58.4 mm (2.3 in)	26 of 100 (Routine)
Den Helder	Netherlands	Record high minimum temperature	19.1 C (66.4 F)	26 of 100 (Routine)
Skara 1	Sweden	Record high minimum temperature	12.6 C (54.7 F)	26 of 100 (Routine)
Berne Wwtp	United States	Record daily precipitation	50.0 mm (2.0 in)	26 of 100 (Routine)
Little Sioux	United States	Record daily precipitation	46.0 mm (1.8 in)	26 of 100 (Routine)
Spencer 1 N	United States	Record daily precipitation	49.5 mm (1.9 in)	26 of 100 (Routine)
Garnett 1 E	United States	Record daily precipitation	62.0 mm (2.4 in)	26 of 100 (Routine)
Pontiac Wwtp	United States	Record daily precipitation	47.5 mm (1.9 in)	26 of 100 (Routine)
Ogdensburg 4 NE	United States	Record high minimum temperature	22.8 C (73.0 F)	26 of 100 (Routine)
Tulsa	United States	Record daily precipitation	56.1 mm (2.2 in)	26 of 100 (Routine)

Counts by Type and Timescale

596 records

Records set or tied on 12 September 1947 by type: Highest daily maximum 123, Lowest daily maximum 14, Highest daily minimum 295, Lowest daily minimum 27, Heaviest daily rainfall 136, Heaviest daily snowfall 1.

Records on 12 September 1947 by type
Record type	Records
Highest daily maximum	123
Lowest daily maximum	14
Highest daily minimum	295
Lowest daily minimum	27
Heaviest daily rainfall	136
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 12 September 1947 by timescale: all-time 0, monthly 42, daily 554.

How Much Records Were Beaten By

462 broken records

Margins by which the 462 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.3. Ties are not counted.

Top 20 by Significance

12 September 1947

Top 20 records on 12 September 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 1947	Niznij Novgorod, RU	daily rain	31.9 mm (1.3 in)	22.9 mm (0.9 in)	32 years	55 of 100 (Notable)
12 September 1947	Mt Sterling, US	daily rain	100.6 mm (4.0 in)	78.0 mm (3.1 in)	26 years	53 of 100 (Notable)
12 September 1947	Amos, CA	daily rain	52.3 mm (2.1 in)	31.0 mm (1.2 in)	21 years	49 of 100 (Notable)
12 September 1947	Crescent City, US	daily rain	108.7 mm (4.3 in)	83.3 mm (3.3 in)	16 years	47 of 100 (Notable)
12 September 1947	Mc Connellsville Lk 7, US	daily rain	57.2 mm (2.3 in)	29.5 mm (1.2 in)	51 years	46 of 100 (Notable)
12 September 1947	Putbus, DE	daily high max	29.0 C (84.2 F)	4.7 C (8.5 F)	71 years	44 of 100 (Notable)
12 September 1947	Kodavasal, IN	daily rain	85.9 mm (3.4 in)	50.6 mm (2.0 in)	45 years	43 of 100 (Notable)
12 September 1947	Mauston 1 SE, US	daily rain	72.1 mm (2.8 in)	37.8 mm (1.5 in)	36 years	43 of 100 (Notable)
12 September 1947	Toronto, CA	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	95 years	39 of 100 (Notable)
12 September 1947	Webbers Falls 5 WSW, US	daily rain	80.3 mm (3.2 in)	48.5 mm (1.9 in)	33 years	39 of 100 (Notable)
12 September 1947	Atlantic City Marina, US	monthly high min	24.4 C (75.9 F)	0.5 C (0.9 F)	67 years	38 of 100 (Notable)
12 September 1947	Regensburg, DE	monthly high max	31.6 C (88.9 F)	1.3 C (2.3 F)	61 years	37 of 100 (Notable)
12 September 1947	Porto Novo, IN	daily rain	81.0 mm (3.2 in)	45.4 mm (1.8 in)	33 years	37 of 100 (Notable)
12 September 1947	Circleville, US	daily rain	64.8 mm (2.6 in)	25.2 mm (1.0 in)	26 years	37 of 100 (Notable)
12 September 1947	Columbus Ohio St UNIV, US	daily rain	46.2 mm (1.8 in)	30.2 mm (1.2 in)	8 years	37 of 100 (Notable)
12 September 1947	Sandvig, DK	daily high max	27.5 C (81.5 F)	6.4 C (11.5 F)	13 years	35 of 100 (Notable)
12 September 1947	Kristianstad, SE	monthly high max	27.5 C (81.5 F)	0.5 C (0.9 F)	61 years	35 of 100 (Notable)
12 September 1947	Elizabeth, US	monthly high min	27.2 C (81.0 F)	3.3 C (5.9 F)	49 years	35 of 100 (Notable)
12 September 1947	Barkerville, CA	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	58 years	33 of 100 (Routine)
12 September 1947	Goderich, CA	daily high min	20.0 C (68.0 F)	1.1 C (2.0 F)	78 years	33 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

1793 to 1947

Records set or tied on this calendar date in each year from 1793 to 1947. 1947 had 596 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 1947-09-12: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	434
20 to 40	21
40 to 60	5
60 to 80	1
80 to 100	1