Weather Records on 23 September 1917

56 weather records were set or tied worldwide on 23 September 1917. Highest significance: Springsure Comet St, AU.

Key Facts for 23 September 1917

On 23 September 1917, 56 weather records were set or tied at long-record stations worldwide.
10 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 2 monthly and 53 daily.
Springsure Comet St set a daily record precipitation of 45.7 mm (1.8 in) on 23 September 1917.
Across 169 earlier years (1793 to 2026) the same calendar date averaged 434 records.

Record Map

56 stations

56 station records on 23 September 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 September 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Springsure Comet St	Australia	Record daily precipitation	45.7 mm (1.8 in)	44 of 100 (Notable)
Port Fairy (Griffiths Island)	Australia	Record daily precipitation	30.5 mm (1.2 in)	41 of 100 (Notable)
Camboon Station	Australia	Record daily precipitation	28.7 mm (1.1 in)	28 of 100 (Routine)
Port Campbell Post Office	Australia	Record daily precipitation	54.6 mm (2.1 in)	28 of 100 (Routine)
Miles Post Office	Australia	Record daily precipitation	50.8 mm (2.0 in)	24 of 100 (Routine)
Nanango Wills St	Australia	Record daily precipitation	29.0 mm (1.1 in)	23 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record daily precipitation	44.2 mm (1.7 in)	23 of 100 (Routine)
Yorketown	Australia	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Moonaree	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Edithburgh Post Office	Australia	Record daily precipitation	8.4 mm (0.33 in)	20 of 100 (Routine)
Blackall Township	Australia	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Orenburg	Russia	Record daily precipitation	8.2 mm (0.32 in)	20 of 100 (Routine)
Uniondale (Tnk)	South Africa	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Collarenebri (Albert St)	Australia	Record daily precipitation	38.4 mm (1.5 in)	19 of 100 (Routine)
Alpha Post Office	Australia	Record daily precipitation	10.2 mm (0.4 in)	18 of 100 (Routine)
Qu'appelle	Canada	Record high maximum temperature	32.2 C (90.0 F)	18 of 100 (Routine)
Sacramento 5 ESE	United States	Record low minimum temperature	8.3 C (46.9 F)	17 of 100 (Routine)
Inglewood Post Office	Australia	Record daily precipitation	17.8 mm (0.7 in)	16 of 100 (Routine)
Qu'appelle	Canada	Record high minimum temperature	13.3 C (55.9 F)	16 of 100 (Routine)
Calitzdorp Pol	South Africa	Record daily precipitation	14.0 mm (0.6 in)	16 of 100 (Routine)
Somerset East	South Africa	Record daily precipitation	11.7 mm (0.5 in)	16 of 100 (Routine)
Tarkastad (Pol)	South Africa	Record daily precipitation	3.8 mm (0.15 in)	16 of 100 (Routine)
Cowell	Australia	Record daily precipitation	9.9 mm (0.39 in)	15 of 100 (Routine)
Aberdeen (Tnk)	South Africa	Record daily precipitation	8.9 mm (0.35 in)	15 of 100 (Routine)
Fort National	Algeria	Record high maximum temperature	31.0 C (87.8 F)	14 of 100 (Routine)
Clarendon	Australia	Record daily precipitation	7.6 mm (0.30 in)	14 of 100 (Routine)
Isisford Post Office	Australia	Record daily precipitation	3.3 mm (0.13 in)	14 of 100 (Routine)
Boulia Airport	Australia	Record daily precipitation	4.6 mm (0.18 in)	14 of 100 (Routine)
Macarthur (Glenhuntly)	Australia	Record daily precipitation	12.7 mm (0.5 in)	14 of 100 (Routine)
Swift Current	Canada	Record high maximum temperature	32.2 C (90.0 F)	14 of 100 (Routine)
Adelaide (Thorndon Park)	Australia	Record daily precipitation	9.7 mm (0.38 in)	13 of 100 (Routine)
Tambo Post Office	Australia	Record daily precipitation	3.6 mm (0.14 in)	13 of 100 (Routine)
Surat	Australia	Record daily precipitation	6.4 mm (0.25 in)	13 of 100 (Routine)
Chicoutimi	Canada	Record low minimum temperature	-5.0 C (23.0 F)	13 of 100 (Routine)
Blue Hill Coop	United States	Record low maximum temperature	10.6 C (51.1 F)	13 of 100 (Routine)
Toowoomba	Australia	Record daily precipitation	11.7 mm (0.5 in)	12 of 100 (Routine)
Beechal	Australia	Record daily precipitation	7.4 mm (0.29 in)	12 of 100 (Routine)
Swift Current	Canada	Record high minimum temperature	13.3 C (55.9 F)	11 of 100 (Routine)
St Albans	Canada	Record high maximum temperature	33.3 C (91.9 F)	11 of 100 (Routine)
Hambantota	Sri Lanka	Record low maximum temperature	27.5 C (81.5 F)	11 of 100 (Routine)
Clermont Sirius St	Australia	Record daily precipitation	8.4 mm (0.33 in)	10 of 100 (Routine)
Wunnamurra	Australia	Record daily precipitation	2.5 mm (0.10 in)	10 of 100 (Routine)
Minnedosa	Canada	Record high maximum temperature	30.0 C (86.0 F)	10 of 100 (Routine)
Yalata	Australia	Record daily precipitation	4.1 mm (0.16 in)	9 of 100 (Routine)
Taree (Radio Station 2Re)	Australia	Record daily precipitation	7.9 mm (0.31 in)	8 of 100 (Routine)
Alice Springs Post Office	Australia	Record high minimum temperature	19.4 C (66.9 F)	7 of 100 (Routine)
Virginia Sheedy Road	Australia	Record daily precipitation	7.4 mm (0.29 in)	7 of 100 (Routine)
Dalby Post Office	Australia	Record daily precipitation	10.2 mm (0.4 in)	7 of 100 (Routine)
Hohenpeissenberg	Germany	Record high maximum temperature	20.9 C (69.6 F)	7 of 100 (Routine)
Port Augusta (Carriewerloo STN	Australia	Record daily precipitation	7.1 mm (0.28 in)	6 of 100 (Routine)
Tanunda	Australia	Record daily precipitation	10.7 mm (0.4 in)	6 of 100 (Routine)
Innsbruck	Austria	Record high maximum temperature	24.2 C (75.6 F)	6 of 100 (Routine)
Dartmouth	Australia	Record daily precipitation	6.6 mm (0.26 in)	5 of 100 (Routine)
Pointe Au Pere	Canada	Record low minimum temperature	-1.1 C (30.0 F)	3 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	24.4 C (75.9 F)	2 of 100 (Routine)
Quebec	Canada	Record low minimum temperature	-1.1 C (30.0 F)	1 of 100 (Routine)

Counts by Type and Timescale

56 records

Records set or tied on 23 September 1917 by type: Highest daily maximum 7, Lowest daily maximum 3, Highest daily minimum 3, Lowest daily minimum 4, Heaviest daily rainfall 39.

Records on 23 September 1917 by type
Record type	Records
Highest daily maximum	7
Lowest daily maximum	3
Highest daily minimum	3
Lowest daily minimum	4
Heaviest daily rainfall	39
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 23 September 1917 by timescale: all-time 1, monthly 2, daily 53.

How Much Records Were Beaten By

53 broken records

Margins by which the 53 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 35.5. Ties are not counted.

Top 20 by Significance

23 September 1917

Top 20 records on 23 September 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 1917	Springsure Comet St, AU	daily rain	45.7 mm (1.8 in)	35.5 mm (1.4 in)	6 years	44 of 100 (Notable)
23 September 1917	Port Fairy (Griffiths Island), AU	daily rain	30.5 mm (1.2 in)	18.1 mm (0.7 in)	22 years	41 of 100 (Notable)
23 September 1917	Camboon Station, AU	daily rain	28.7 mm (1.1 in)	25.4 mm (1.0 in)	6 years	28 of 100 (Routine)
23 September 1917	Port Campbell Post Office, AU	all-time rain	54.6 mm (2.1 in)	2.0 mm (0.08 in)	7 years	28 of 100 (Routine)
23 September 1917	Miles Post Office, AU	monthly rain	50.8 mm (2.0 in)	2.5 mm (0.10 in)	28 years	24 of 100 (Routine)
23 September 1917	Nanango Wills St, AU	daily rain	29.0 mm (1.1 in)	13.3 mm (0.5 in)	27 years	23 of 100 (Routine)
23 September 1917	Cape Otway Lighthouse, AU	monthly rain	44.2 mm (1.7 in)	3.6 mm (0.14 in)	9 years	23 of 100 (Routine)
23 September 1917	Yorketown, AU	daily rain	21.3 mm (0.8 in)	13.2 mm (0.5 in)	24 years	20 of 100 (Routine)
23 September 1917	Moonaree, AU	daily rain	16.5 mm (0.6 in)	13.2 mm (0.5 in)	10 years	20 of 100 (Routine)
23 September 1917	Edithburgh Post Office, AU	daily rain	8.4 mm (0.33 in)	5.4 mm (0.21 in)	26 years	20 of 100 (Routine)
23 September 1917	Blackall Township, AU	daily rain	10.4 mm (0.4 in)	10.4 mm (0.4 in)	36 years	20 of 100 (Routine)
23 September 1917	Orenburg, RU	daily rain	8.2 mm (0.32 in)	6.4 mm (0.25 in)	4 years	20 of 100 (Routine)
23 September 1917	Uniondale (Tnk), ZA	daily rain	21.1 mm (0.8 in)	13.0 mm (0.5 in)	20 years	20 of 100 (Routine)
23 September 1917	Collarenebri (Albert St), AU	daily rain	38.4 mm (1.5 in)	11.7 mm (0.5 in)	19 years	19 of 100 (Routine)
23 September 1917	Alpha Post Office, AU	daily rain	10.2 mm (0.4 in)	8.7 mm (0.34 in)	27 years	18 of 100 (Routine)
23 September 1917	Qu'appelle, CA	daily high max	32.2 C (90.0 F)	5.0 C (9.0 F)	20 years	18 of 100 (Routine)
23 September 1917	Sacramento 5 ESE, US	daily low min	8.3 C (46.9 F)	0.6 C (1.1 F)	36 years	17 of 100 (Routine)
23 September 1917	Inglewood Post Office, AU	daily rain	17.8 mm (0.7 in)	8.4 mm (0.33 in)	20 years	16 of 100 (Routine)
23 September 1917	Qu'appelle, CA	daily high min	13.3 C (55.9 F)	3.3 C (5.9 F)	19 years	16 of 100 (Routine)
23 September 1917	Calitzdorp Pol, ZA	daily rain	14.0 mm (0.6 in)	5.6 mm (0.22 in)	23 years	16 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 1917

Records set or tied on this calendar date in each year from 1793 to 1917. 1917 had 56 records.

Counts for years before the ledger starts come from the same station rules.

Records on 09-23 in each year
Year	Records
1793	1
1796	1
1799	1
1804	1
1832	1
1835	1
1838	1
1842	3
1843	1
1845	2
1848	1
1849	1
1850	1
1851	2
1854	3
1855	1
1859	2
1864	1
1865	1
1866	1
1868	1
1871	1
1872	1
1874	1
1875	1
1876	1
1877	1
1881	4
1882	2
1885	1
1886	1
1887	1
1888	1
1889	3
1890	2
1891	1
1892	2
1893	4
1895	9
1896	5
1897	1
1898	2
1899	4
1900	4
1901	2
1902	6
1903	7
1904	19
1905	6
1906	6
1907	19
1908	19
1909	15
1910	8
1911	11
1912	15
1913	22
1914	29
1915	25
1916	324
1917	56
1918	34
1919	40
1920	44
1921	47
1922	34
1923	74
1924	194
1925	223
1926	459
1927	247
1928	382
1929	198
1930	472
1931	600
1932	383
1933	281
1934	361
1935	239
1936	377
1937	557
1938	389
1939	279
1940	374
1941	490
1942	557
1943	322
1944	381
1945	652
1946	623
1947	803
1948	259
1949	496
1950	267
1951	462
1952	432
1953	271
1954	324
1955	852
1956	299
1957	539
1958	641
1959	307
1960	470
1961	670
1962	344
1963	568
1964	322
1965	783
1966	528
1967	341
1968	481
1969	450
1970	1,457
1971	578
1972	461
1973	674
1974	1,543
1975	1,038
1976	463
1977	616
1978	500
1979	586
1980	1,037
1981	717
1982	775
1983	1,744
1984	1,121
1985	924
1986	740
1987	1,077
1988	653
1989	1,376
1990	702
1991	519
1992	976
1993	983
1994	1,140
1995	1,868
1996	809
1997	1,060
1998	1,326
1999	1,207
2000	2,026
2001	790
2002	930
2003	1,243
2004	986
2005	1,207
2006	1,509
2007	1,153
2008	835
2009	1,201
2010	1,360
2011	666
2012	785
2013	573
2014	595
2015	587
2016	774
2017	1,371
2018	693
2019	565
2020	618
2021	602
2022	551
2023	812
2024	499
2025	449
2026	384

Download the Data

Data for records on 1917-09-23: 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 5	36
5 to 10	8
10 to 15	6
15 to 20	1
20 to 25	0
25 to 30	1
30 to 35	0
35 to 40	1