Weather Records on 17 September 1947

680 weather records were set or tied worldwide on 17 September 1947. Highest significance: Ongole, IN.

Key Facts for 17 September 1947

On 17 September 1947, 680 weather records were set or tied at long-record stations worldwide.
266 were record highs and 172 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 663 daily.
Ongole set a monthly record daily precipitation of 147.6 mm (5.8 in) on 17 September 1947.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 421 records.

Record Map

680 stations

680 station records on 17 September 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ongole	India	Record daily precipitation	147.6 mm (5.8 in)	65 of 100 (Major)
Beaver Mines	Canada	Record daily snowfall	52.1 cm (20.5 in)	59 of 100 (Notable)
Park City G.C.	United States	Record daily precipitation	30.0 mm (1.2 in)	59 of 100 (Notable)
Waren	Germany	Record daily precipitation	75.0 mm (3.0 in)	58 of 100 (Notable)
Caldwell	Canada	Record daily snowfall	61.0 cm (24.0 in)	56 of 100 (Notable)
Babb 6 NE	United States	Record daily snowfall	35.6 cm (14.0 in)	54 of 100 (Notable)
Ft Myers Page Fld AP	United States	Record daily precipitation	152.9 mm (6.0 in)	52 of 100 (Notable)
Lundbreck	Canada	Record daily snowfall	45.7 cm (18.0 in)	46 of 100 (Notable)
Grace	United States	Record daily precipitation	41.7 mm (1.6 in)	45 of 100 (Notable)
Caldwell	Canada	Record daily precipitation	61.0 mm (2.4 in)	44 of 100 (Notable)
Lundbreck	Canada	Record daily precipitation	45.7 mm (1.8 in)	44 of 100 (Notable)
Tranebjerg	Denmark	Record high maximum temperature	26.0 C (78.8 F)	44 of 100 (Notable)
Kaithal	India	Record daily precipitation	88.9 mm (3.5 in)	41 of 100 (Notable)
Hosanagar	India	Record daily precipitation	77.5 mm (3.1 in)	41 of 100 (Notable)
Praha-Klementinum	Czech Republic	Record high maximum temperature	30.0 C (86.0 F)	40 of 100 (Notable)
Virginia City	United States	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Pincher Creek Town	Canada	Record daily snowfall	30.5 cm (12.0 in)	38 of 100 (Notable)
Cumbam	India	Record daily precipitation	88.9 mm (3.5 in)	38 of 100 (Notable)
Vastervik	Sweden	Record high maximum temperature	27.4 C (81.3 F)	38 of 100 (Notable)
Anchorage Merrill Fld	United States	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
High River	Canada	Record daily snowfall	10.2 cm (4.0 in)	37 of 100 (Notable)
Saundatti	India	Record daily precipitation	55.4 mm (2.2 in)	37 of 100 (Notable)
Heavitree, Estcourt	South Africa	Record daily precipitation	42.7 mm (1.7 in)	36 of 100 (Notable)
Goldbutte 7 N	United States	Record daily snowfall	10.2 cm (4.0 in)	36 of 100 (Notable)
Park Rch	United States	Record daily precipitation	27.9 mm (1.1 in)	36 of 100 (Notable)
Stockholm	Sweden	Record high minimum temperature	16.4 C (61.5 F)	35 of 100 (Notable)
Sandvig	Denmark	Record high minimum temperature	17.3 C (63.1 F)	34 of 100 (Routine)
Regensburg	Germany	Record high maximum temperature	30.7 C (87.3 F)	34 of 100 (Routine)
Jashpurnagar	India	Record daily precipitation	72.4 mm (2.9 in)	34 of 100 (Routine)
Brady Aznoe	United States	Record daily precipitation	27.9 mm (1.1 in)	34 of 100 (Routine)
Cascade 5 S	United States	Record daily snowfall	8.9 cm (3.5 in)	34 of 100 (Routine)
Jena Sternwarte	Germany	Record high maximum temperature	32.2 C (90.0 F)	33 of 100 (Routine)
Milan	Italy	Record high maximum temperature	30.0 C (86.0 F)	33 of 100 (Routine)
Aktobe	Kazakhstan	Record daily precipitation	25.4 mm (1.0 in)	33 of 100 (Routine)
Bjuraker	Sweden	Record high maximum temperature	23.8 C (74.8 F)	33 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record high maximum temperature	31.9 C (89.4 F)	32 of 100 (Routine)
Putbus	Germany	Record high maximum temperature	24.0 C (75.2 F)	31 of 100 (Routine)
Weissenburg	Germany	Record high maximum temperature	31.5 C (88.7 F)	31 of 100 (Routine)
Hirekerur	India	Record daily precipitation	41.1 mm (1.6 in)	31 of 100 (Routine)
Ankenes	Norway	Record daily precipitation	28.0 mm (1.1 in)	31 of 100 (Routine)
Karlshamn	Sweden	Record high maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Coeur D'Alene	United States	Record low maximum temperature	7.2 C (45.0 F)	31 of 100 (Routine)
Adel	United States	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Choteau	United States	Record daily snowfall	5.1 cm (2.0 in)	31 of 100 (Routine)
Norris Madison Pwr House	United States	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Medicine Hat A	Canada	Record daily snowfall	5.1 cm (2.0 in)	30 of 100 (Routine)
Lyndon	Canada	Record daily snowfall	15.2 cm (6.0 in)	30 of 100 (Routine)
Vestervig	Denmark	Record high minimum temperature	15.1 C (59.2 F)	30 of 100 (Routine)
Bamberg	Germany	Record high maximum temperature	31.8 C (89.2 F)	30 of 100 (Routine)
Gorlitz	Germany	Record high minimum temperature	18.8 C (65.8 F)	30 of 100 (Routine)
Andenes	Norway	Record daily precipitation	26.0 mm (1.0 in)	30 of 100 (Routine)
White Sulphur Springs	United States	Record low maximum temperature	0.6 C (33.1 F)	30 of 100 (Routine)
Innsbruck	Austria	Record high maximum temperature	30.0 C (86.0 F)	29 of 100 (Routine)
Gorlitz	Germany	Record high maximum temperature	30.3 C (86.5 F)	29 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record high maximum temperature	30.0 C (86.0 F)	29 of 100 (Routine)
Debrecen Airport	Hungary	Record high maximum temperature	33.8 C (92.8 F)	29 of 100 (Routine)
Kristianstad	Sweden	Record high maximum temperature	24.0 C (75.2 F)	29 of 100 (Routine)
Dillon U of Montana Western	United States	Record daily snowfall	5.1 cm (2.0 in)	29 of 100 (Routine)
Valier	United States	Record daily snowfall	22.9 cm (9.0 in)	29 of 100 (Routine)
Paragonah	United States	Record high minimum temperature	16.1 C (61.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

680 records

Records set or tied on 17 September 1947 by type: Highest daily maximum 157, Lowest daily maximum 134, Highest daily minimum 109, Lowest daily minimum 38, Heaviest daily rainfall 213, Heaviest daily snowfall 27, Deepest snow cover 2.

Records on 17 September 1947 by type
Record type	Records
Highest daily maximum	157
Lowest daily maximum	134
Highest daily minimum	109
Lowest daily minimum	38
Heaviest daily rainfall	213
Heaviest daily snowfall	27
Deepest snow cover	2

Records on 17 September 1947 by timescale: all-time 0, monthly 17, daily 663.

How Much Records Were Beaten By

578 broken records

Margins by which the 578 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

17 September 1947

Top 20 records on 17 September 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1947	Ongole, IN	monthly rain	147.6 mm (5.8 in)	64.8 mm (2.6 in)	38 years	65 of 100 (Major)
17 September 1947	Beaver Mines, CA	monthly snowfall	52.1 cm (20.5 in)	19.1 cm (7.5 in)	27 years	59 of 100 (Notable)
17 September 1947	Park City G.C., US	daily rain	30.0 mm (1.2 in)	29.2 mm (1.1 in)	46 years	59 of 100 (Notable)
17 September 1947	Waren, DE	monthly rain	75.0 mm (3.0 in)	40.1 mm (1.6 in)	13 years	58 of 100 (Notable)
17 September 1947	Caldwell, CA	monthly snowfall	61.0 cm (24.0 in)	30.5 cm (12.0 in)	12 years	56 of 100 (Notable)
17 September 1947	Babb 6 NE, US	daily snowfall	35.6 cm (14.0 in)	35.6 cm (14.0 in)	40 years	54 of 100 (Notable)
17 September 1947	Ft Myers Page Fld AP, US	daily rain	152.9 mm (6.0 in)	89.9 mm (3.5 in)	24 years	52 of 100 (Notable)
17 September 1947	Lundbreck, CA	monthly snowfall	45.7 cm (18.0 in)	15.2 cm (6.0 in)	27 years	46 of 100 (Notable)
17 September 1947	Grace, US	monthly rain	41.7 mm (1.6 in)	14.8 mm (0.6 in)	17 years	45 of 100 (Notable)
17 September 1947	Caldwell, CA	daily rain	61.0 mm (2.4 in)	43.2 mm (1.7 in)	4 years	44 of 100 (Notable)
17 September 1947	Lundbreck, CA	daily rain	45.7 mm (1.8 in)	38.1 mm (1.5 in)	4 years	44 of 100 (Notable)
17 September 1947	Tranebjerg, DK	daily high max	26.0 C (78.8 F)	4.9 C (8.8 F)	64 years	44 of 100 (Notable)
17 September 1947	Kaithal, IN	daily rain	88.9 mm (3.5 in)	57.4 mm (2.3 in)	44 years	41 of 100 (Notable)
17 September 1947	Hosanagar, IN	daily rain	77.5 mm (3.1 in)	39.4 mm (1.6 in)	32 years	41 of 100 (Notable)
17 September 1947	Praha-Klementinum, CZ	daily high max	30.0 C (86.0 F)	1.6 C (2.9 F)	92 years	40 of 100 (Notable)
17 September 1947	Virginia City, US	daily rain	25.4 mm (1.0 in)	10.4 mm (0.4 in)	53 years	39 of 100 (Notable)
17 September 1947	Pincher Creek Town, CA	daily snowfall	30.5 cm (12.0 in)	22.9 cm (9.0 in)	1 year	38 of 100 (Notable)
17 September 1947	Cumbam, IN	daily rain	88.9 mm (3.5 in)	42.4 mm (1.7 in)	24 years	38 of 100 (Notable)
17 September 1947	Vastervik, SE	daily high max	27.4 C (81.3 F)	4.4 C (7.9 F)	62 years	38 of 100 (Notable)
17 September 1947	Anchorage Merrill Fld, US	daily rain	30.5 mm (1.2 in)	19.8 mm (0.8 in)	2 years	38 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 1947

Records set or tied on this calendar date in each year from 1796 to 1947. 1947 had 680 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 1947-09-17: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 50	558
50 to 100	11
100 to 150	4
150 to 200	2
200 to 250	1
250 to 300	0
300 to 350	1
350 to 400	1