Weather Records on 17 September 1956

437 weather records were set or tied worldwide on 17 September 1956. Highest significance: Koele 693, US.

Key Facts for 17 September 1956

On 17 September 1956, 437 weather records were set or tied at long-record stations worldwide.
184 were record highs and 93 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 431 daily.
Koele 693 set a daily record precipitation of 85.3 mm (3.4 in) on 17 September 1956.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 423 records.

Record Map

437 stations

437 station records on 17 September 1956 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1956: highest significance records shown on the map
Station	Country	Type	Value	Significance
Koele 693	United States	Record daily precipitation	85.3 mm (3.4 in)	55 of 100 (Notable)
Dinokana	South Africa	Record daily precipitation	41.0 mm (1.6 in)	53 of 100 (Notable)
Inverness 3 SE	United States	Record low minimum temperature	14.4 C (57.9 F)	52 of 100 (Notable)
Boyup Brook	Australia	Record daily precipitation	26.7 mm (1.1 in)	50 of 100 (Notable)
Jayamkondam	India	Record daily precipitation	71.9 mm (2.8 in)	48 of 100 (Notable)
De Hoek (Bos)	South Africa	Record daily precipitation	46.0 mm (1.8 in)	48 of 100 (Notable)
Greenbushes	Australia	Record daily precipitation	44.7 mm (1.8 in)	45 of 100 (Notable)
Dinninup	Australia	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Nellore	India	Record daily precipitation	57.7 mm (2.3 in)	39 of 100 (Notable)
Harapanahalli	India	Record daily precipitation	88.4 mm (3.5 in)	39 of 100 (Notable)
Avon	United States	Record daily precipitation	36.6 mm (1.4 in)	39 of 100 (Notable)
Neidavasal	India	Record daily precipitation	66.5 mm (2.6 in)	38 of 100 (Notable)
Sterkfontein	South Africa	Record daily precipitation	29.0 mm (1.1 in)	38 of 100 (Notable)
Alur	India	Record daily precipitation	63.5 mm (2.5 in)	36 of 100 (Notable)
Middlekop (Bos)	South Africa	Record daily precipitation	33.5 mm (1.3 in)	36 of 100 (Notable)
Valley View Lock 9	United States	Record daily precipitation	36.8 mm (1.4 in)	35 of 100 (Notable)
Adams	United States	Record low maximum temperature	9.4 C (48.9 F)	35 of 100 (Notable)
Broederstroom (Bos)	South Africa	Record daily precipitation	61.0 mm (2.4 in)	34 of 100 (Routine)
Balingup	Australia	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
High Brg Lock 7	United States	Record daily precipitation	43.7 mm (1.7 in)	32 of 100 (Routine)
Bridgetown Comparison	Australia	Record daily precipitation	30.2 mm (1.2 in)	30 of 100 (Routine)
Crows Nest	Australia	Record daily precipitation	36.1 mm (1.4 in)	30 of 100 (Routine)
Ismailia	Egypt	Record high minimum temperature	24.0 C (75.2 F)	29 of 100 (Routine)
Tucson WFO	United States	Record high maximum temperature	41.1 C (106.0 F)	29 of 100 (Routine)
Saidapet	India	Record daily precipitation	88.9 mm (3.5 in)	28 of 100 (Routine)
Brunswick Junction	Australia	Record daily precipitation	31.2 mm (1.2 in)	27 of 100 (Routine)
Pinjarra	Australia	Record daily precipitation	29.0 mm (1.1 in)	27 of 100 (Routine)
Kalkfontein	South Africa	Record daily precipitation	34.5 mm (1.4 in)	27 of 100 (Routine)
Farmington	United States	Record low maximum temperature	10.6 C (51.1 F)	27 of 100 (Routine)
Purcell 2 SW	United States	Record high maximum temperature	39.4 C (102.9 F)	27 of 100 (Routine)
Nueva Rosita	Mexico	Record low minimum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Jerome	United States	Record high minimum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Lake Alfred Exp STN	United States	Record low minimum temperature	16.1 C (61.0 F)	26 of 100 (Routine)
Bar Harbor 3 NW	United States	Record low maximum temperature	12.2 C (54.0 F)	26 of 100 (Routine)
Hadagalli	India	Record daily precipitation	50.3 mm (2.0 in)	25 of 100 (Routine)
Tshakhuma	South Africa	Record daily precipitation	30.0 mm (1.2 in)	25 of 100 (Routine)
Gunnison 3SW	United States	Record high maximum temperature	28.9 C (84.0 F)	25 of 100 (Routine)
Yates Ctr	United States	Record high maximum temperature	36.7 C (98.1 F)	25 of 100 (Routine)
Gage	United States	Record high maximum temperature	37.8 C (100.0 F)	25 of 100 (Routine)
Kula Sanatorium 267	United States	Record daily precipitation	32.0 mm (1.3 in)	25 of 100 (Routine)
Florence	United States	Record high maximum temperature	43.9 C (111.0 F)	24 of 100 (Routine)
Indio Fire STN	United States	Record high maximum temperature	45.6 C (114.1 F)	24 of 100 (Routine)
Leavenworth Dam 44	United States	Record daily precipitation	32.8 mm (1.3 in)	24 of 100 (Routine)
Eastport	United States	Record low maximum temperature	11.1 C (52.0 F)	24 of 100 (Routine)
Madison	United States	Record low maximum temperature	11.7 C (53.1 F)	24 of 100 (Routine)
Trenton Falls	United States	Record daily precipitation	30.2 mm (1.2 in)	24 of 100 (Routine)
Capel	Australia	Record daily precipitation	58.2 mm (2.3 in)	23 of 100 (Routine)
Zerbst	Germany	Record low maximum temperature	13.7 C (56.7 F)	23 of 100 (Routine)
Sirkali	India	Record daily precipitation	69.6 mm (2.7 in)	23 of 100 (Routine)
Douglas Smelter	United States	Record high maximum temperature	37.8 C (100.0 F)	23 of 100 (Routine)
Framingham	United States	Record low maximum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Armadale	Australia	Record daily precipitation	28.2 mm (1.1 in)	22 of 100 (Routine)
Wandering Comparison	Australia	Record high minimum temperature	13.3 C (55.9 F)	22 of 100 (Routine)
Warragai	Australia	Record daily precipitation	32.5 mm (1.3 in)	22 of 100 (Routine)
Bremen-Seefahrtschule	Germany	Record low maximum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Hull	United Kingdom	Record low minimum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Narkatiyaganj	India	Record daily precipitation	187.5 mm (7.4 in)	21 of 100 (Routine)
Longvale	South Africa	Record daily precipitation	51.5 mm (2.0 in)	21 of 100 (Routine)
The Mills	South Africa	Record daily precipitation	30.6 mm (1.2 in)	21 of 100 (Routine)
Reddersburg (Pol)	South Africa	Record daily precipitation	31.5 mm (1.2 in)	21 of 100 (Routine)

Counts by Type and Timescale

437 records

Records set or tied on 17 September 1956 by type: Highest daily maximum 160, Lowest daily maximum 67, Highest daily minimum 24, Lowest daily minimum 26, Heaviest daily rainfall 160.

Records on 17 September 1956 by type
Record type	Records
Highest daily maximum	160
Lowest daily maximum	67
Highest daily minimum	24
Lowest daily minimum	26
Heaviest daily rainfall	160
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 September 1956 by timescale: all-time 0, monthly 6, daily 431.

How Much Records Were Beaten By

356 broken records

Margins by which the 356 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.4. Ties are not counted.

Top 20 by Significance

17 September 1956

Top 20 records on 17 September 1956 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1956	Koele 693, US	daily rain	85.3 mm (3.4 in)	62.4 mm (2.5 in)	39 years	55 of 100 (Notable)
17 September 1956	Dinokana, ZA	daily rain	41.0 mm (1.6 in)	39.5 mm (1.6 in)	39 years	53 of 100 (Notable)
17 September 1956	Inverness 3 SE, US	daily low min	14.4 C (57.9 F)	5.6 C (10.1 F)	48 years	52 of 100 (Notable)
17 September 1956	Boyup Brook, AU	daily rain	26.7 mm (1.1 in)	18.6 mm (0.7 in)	41 years	50 of 100 (Notable)
17 September 1956	Jayamkondam, IN	daily rain	71.9 mm (2.8 in)	51.6 mm (2.0 in)	47 years	48 of 100 (Notable)
17 September 1956	De Hoek (Bos), ZA	daily rain	46.0 mm (1.8 in)	37.9 mm (1.5 in)	18 years	48 of 100 (Notable)
17 September 1956	Greenbushes, AU	daily rain	44.7 mm (1.8 in)	20.3 mm (0.8 in)	35 years	45 of 100 (Notable)
17 September 1956	Dinninup, AU	daily rain	25.4 mm (1.0 in)	15.7 mm (0.6 in)	33 years	39 of 100 (Notable)
17 September 1956	Nellore, IN	daily rain	57.7 mm (2.3 in)	39.2 mm (1.5 in)	46 years	39 of 100 (Notable)
17 September 1956	Harapanahalli, IN	daily rain	88.4 mm (3.5 in)	35.8 mm (1.4 in)	38 years	39 of 100 (Notable)
17 September 1956	Avon, US	daily rain	36.6 mm (1.4 in)	16.3 mm (0.6 in)	53 years	39 of 100 (Notable)
17 September 1956	Neidavasal, IN	daily rain	66.5 mm (2.6 in)	37.0 mm (1.5 in)	32 years	38 of 100 (Notable)
17 September 1956	Sterkfontein, ZA	daily rain	29.0 mm (1.1 in)	26.0 mm (1.0 in)	28 years	38 of 100 (Notable)
17 September 1956	Alur, IN	daily rain	63.5 mm (2.5 in)	35.1 mm (1.4 in)	40 years	36 of 100 (Notable)
17 September 1956	Middlekop (Bos), ZA	daily rain	33.5 mm (1.3 in)	20.8 mm (0.8 in)	18 years	36 of 100 (Notable)
17 September 1956	Valley View Lock 9, US	daily rain	36.8 mm (1.4 in)	33.0 mm (1.3 in)	32 years	35 of 100 (Notable)
17 September 1956	Adams, US	monthly low max	9.4 C (48.9 F)	0.6 C (1.1 F)	62 years	35 of 100 (Notable)
17 September 1956	Broederstroom (Bos), ZA	daily rain	61.0 mm (2.4 in)	31.0 mm (1.2 in)	18 years	34 of 100 (Routine)
17 September 1956	Balingup, AU	daily rain	27.9 mm (1.1 in)	17.2 mm (0.7 in)	23 years	32 of 100 (Routine)
17 September 1956	High Brg Lock 7, US	daily rain	43.7 mm (1.7 in)	23.1 mm (0.9 in)	27 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

1796 to 1956

Records set or tied on this calendar date in each year from 1796 to 1956. 1956 had 437 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 1956-09-17: 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	304
10 to 20	34
20 to 30	7
30 to 40	9
40 to 50	0
50 to 60	1
60 to 70	1