Weather Records on 19 September 1917

134 weather records were set or tied worldwide on 19 September 1917. Highest significance: Gunnedah Pool, AU.

Key Facts for 19 September 1917

On 19 September 1917, 134 weather records were set or tied at long-record stations worldwide.
34 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 123 daily.
Gunnedah Pool set a daily record precipitation of 39.9 mm (1.6 in) on 19 September 1917.
Across 166 earlier years (1805 to 2026) the same calendar date averaged 416 records.

Record Map

134 stations

134 station records on 19 September 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 19 September 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gunnedah Pool	Australia	Record daily precipitation	39.9 mm (1.6 in)	49 of 100 (Notable)
Dural Public School	Australia	Record daily precipitation	58.7 mm (2.3 in)	47 of 100 (Notable)
Morpeth Post Office	Australia	Record daily precipitation	92.5 mm (3.6 in)	46 of 100 (Notable)
Scone (Philip Street)	Australia	Record daily precipitation	61.7 mm (2.4 in)	45 of 100 (Notable)
Wingen (Murrulla)	Australia	Record daily precipitation	57.7 mm (2.3 in)	45 of 100 (Notable)
Belltrees 1	Australia	Record daily precipitation	62.2 mm (2.4 in)	44 of 100 (Notable)
Dartmouth	Australia	Record daily precipitation	53.8 mm (2.1 in)	44 of 100 (Notable)
Penshurst (Gresford)	Australia	Record daily precipitation	76.7 mm (3.0 in)	43 of 100 (Notable)
Maitland West	Australia	Record daily precipitation	77.2 mm (3.0 in)	42 of 100 (Notable)
Gladstone Post Office	Australia	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Ellerston	Australia	Record daily precipitation	32.8 mm (1.3 in)	41 of 100 (Notable)
Harrington (Oxley Anchorage Ca	Australia	Record daily precipitation	59.7 mm (2.4 in)	40 of 100 (Notable)
Muswellbrook (Lower Hill St)	Australia	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Blackville (Welton Dale)	Australia	Record daily precipitation	58.9 mm (2.3 in)	36 of 100 (Notable)
Burburgate	Australia	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Wyong (Wyong Golf Club)	Australia	Record daily precipitation	81.3 mm (3.2 in)	35 of 100 (Notable)
Port Macquarie (Bellevue Garde	Australia	Record daily precipitation	58.9 mm (2.3 in)	33 of 100 (Routine)
Tarriaro	Australia	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Gosford (Gertrude Place)	Australia	Record daily precipitation	90.2 mm (3.6 in)	32 of 100 (Routine)
Tamworth Airport	Australia	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Belltrees Homestead	Australia	Record daily precipitation	76.7 mm (3.0 in)	31 of 100 (Routine)
Tamworth West	Australia	Record daily precipitation	55.6 mm (2.2 in)	30 of 100 (Routine)
Blackville (Krui Vale)	Australia	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Dungog (Cooreii)	Australia	Record daily precipitation	55.9 mm (2.2 in)	29 of 100 (Routine)
Moorland (Denro-An)	Australia	Record daily precipitation	65.5 mm (2.6 in)	27 of 100 (Routine)
Gundy (Miller St)	Australia	Record daily precipitation	55.6 mm (2.2 in)	27 of 100 (Routine)
Quirindi Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)
Broke (Harrowby)	Australia	Record daily precipitation	36.8 mm (1.4 in)	25 of 100 (Routine)
Milan	Italy	Record high maximum temperature	28.3 C (82.9 F)	25 of 100 (Routine)
Somerton (Bective Estate)	Australia	Record daily precipitation	50.0 mm (2.0 in)	24 of 100 (Routine)
Bomera	Australia	Record daily precipitation	54.6 mm (2.1 in)	23 of 100 (Routine)
Branxton Post Office	Australia	Record daily precipitation	62.2 mm (2.4 in)	22 of 100 (Routine)
Murrurundi Post Office	Australia	Record daily precipitation	52.8 mm (2.1 in)	22 of 100 (Routine)
Pitt Town (the Manse)	Australia	Record daily precipitation	74.9 mm (2.9 in)	22 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	26.7 C (80.1 F)	22 of 100 (Routine)
Gulgong Post Office	Australia	Record daily precipitation	39.9 mm (1.6 in)	21 of 100 (Routine)
Wien	Austria	Record high maximum temperature	29.1 C (84.4 F)	21 of 100 (Routine)
Chatham	Canada	Record high maximum temperature	28.3 C (82.9 F)	21 of 100 (Routine)
Boggabri Post Office	Australia	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Holmogadd A	Sweden	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Barraba Post Office	Australia	Record daily precipitation	34.5 mm (1.4 in)	20 of 100 (Routine)
Kickerbell	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Manilla Post Office	Australia	Record daily precipitation	33.5 mm (1.3 in)	20 of 100 (Routine)
Waverley (Belltrees 2)	Australia	Record daily precipitation	48.5 mm (1.9 in)	20 of 100 (Routine)
Rotherwood	Australia	Record daily precipitation	38.1 mm (1.5 in)	20 of 100 (Routine)
Glenfield (Macquarie)	Australia	Record daily precipitation	26.7 mm (1.1 in)	20 of 100 (Routine)
Melbourne Regional Office	Australia	Record low minimum temperature	2.7 C (36.9 F)	20 of 100 (Routine)
Freiburg	Germany	Record high maximum temperature	28.7 C (83.7 F)	20 of 100 (Routine)
Taree (Radio Station 2Re)	Australia	Record daily precipitation	38.1 mm (1.5 in)	19 of 100 (Routine)
Epping Chester Street	Australia	Record daily precipitation	39.9 mm (1.6 in)	19 of 100 (Routine)
Innsbruck	Austria	Record high maximum temperature	27.2 C (81.0 F)	19 of 100 (Routine)
Berlin-Dahlem	Germany	Record high maximum temperature	27.8 C (82.0 F)	19 of 100 (Routine)
Saentis	Switzerland	Record high minimum temperature	9.7 C (49.5 F)	19 of 100 (Routine)
Gunnedah Pool	Australia	Record low maximum temperature	11.7 C (53.1 F)	18 of 100 (Routine)
Walcha Post Office	Australia	Record daily precipitation	43.7 mm (1.7 in)	18 of 100 (Routine)
Singleton Post Office	Australia	Record daily precipitation	35.6 mm (1.4 in)	18 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	27.8 C (82.0 F)	18 of 100 (Routine)
Wallabadah	Australia	Record daily precipitation	30.2 mm (1.2 in)	17 of 100 (Routine)
Armidale (Radio Station 2Ad)	Australia	Record daily precipitation	29.2 mm (1.1 in)	17 of 100 (Routine)
Ebor (Kotupna)	Australia	Record daily precipitation	22.9 mm (0.9 in)	17 of 100 (Routine)

Counts by Type and Timescale

134 records

Records set or tied on 19 September 1917 by type: Highest daily maximum 25, Lowest daily maximum 5, Highest daily minimum 9, Lowest daily minimum 2, Heaviest daily rainfall 93.

Records on 19 September 1917 by type
Record type	Records
Highest daily maximum	25
Lowest daily maximum	5
Highest daily minimum	9
Lowest daily minimum	2
Heaviest daily rainfall	93
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 19 September 1917 by timescale: all-time 0, monthly 11, daily 123.

How Much Records Were Beaten By

124 broken records

Margins by which the 124 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 66.1. Ties are not counted.

Top 20 by Significance

19 September 1917

Top 20 records on 19 September 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 September 1917	Gunnedah Pool, AU	daily rain	39.9 mm (1.6 in)	28.5 mm (1.1 in)	39 years	49 of 100 (Notable)
19 September 1917	Dural Public School, AU	daily rain	58.7 mm (2.3 in)	25.7 mm (1.0 in)	73 years	47 of 100 (Notable)
19 September 1917	Morpeth Post Office, AU	daily rain	92.5 mm (3.6 in)	66.1 mm (2.6 in)	12 years	46 of 100 (Notable)
19 September 1917	Scone (Philip Street), AU	daily rain	61.7 mm (2.4 in)	43.9 mm (1.7 in)	4 years	45 of 100 (Notable)
19 September 1917	Wingen (Murrulla), AU	daily rain	57.7 mm (2.3 in)	42.0 mm (1.7 in)	4 years	45 of 100 (Notable)
19 September 1917	Belltrees 1, AU	daily rain	62.2 mm (2.4 in)	39.3 mm (1.5 in)	4 years	44 of 100 (Notable)
19 September 1917	Dartmouth, AU	daily rain	53.8 mm (2.1 in)	35.0 mm (1.4 in)	4 years	44 of 100 (Notable)
19 September 1917	Penshurst (Gresford), AU	daily rain	76.7 mm (3.0 in)	54.6 mm (2.1 in)	2 years	43 of 100 (Notable)
19 September 1917	Maitland West, AU	daily rain	77.2 mm (3.0 in)	48.0 mm (1.9 in)	12 years	42 of 100 (Notable)
19 September 1917	Gladstone Post Office, AU	daily rain	39.6 mm (1.6 in)	34.5 mm (1.4 in)	16 years	41 of 100 (Notable)
19 September 1917	Ellerston, AU	daily rain	32.8 mm (1.3 in)	21.4 mm (0.8 in)	27 years	41 of 100 (Notable)
19 September 1917	Harrington (Oxley Anchorage Ca, AU	daily rain	59.7 mm (2.4 in)	50.3 mm (2.0 in)	27 years	40 of 100 (Notable)
19 September 1917	Muswellbrook (Lower Hill St), AU	daily rain	50.8 mm (2.0 in)	30.5 mm (1.2 in)	4 years	39 of 100 (Notable)
19 September 1917	Blackville (Welton Dale), AU	daily rain	58.9 mm (2.3 in)	40.9 mm (1.6 in)	4 years	36 of 100 (Notable)
19 September 1917	Burburgate, AU	daily rain	31.8 mm (1.3 in)	19.6 mm (0.8 in)	21 years	35 of 100 (Notable)
19 September 1917	Wyong (Wyong Golf Club), AU	daily rain	81.3 mm (3.2 in)	41.7 mm (1.6 in)	12 years	35 of 100 (Notable)
19 September 1917	Port Macquarie (Bellevue Garde, AU	daily rain	58.9 mm (2.3 in)	52.3 mm (2.1 in)	4 years	33 of 100 (Routine)
19 September 1917	Tarriaro, AU	daily rain	35.6 mm (1.4 in)	25.2 mm (1.0 in)	21 years	32 of 100 (Routine)
19 September 1917	Gosford (Gertrude Place), AU	daily rain	90.2 mm (3.6 in)	54.4 mm (2.1 in)	12 years	32 of 100 (Routine)
19 September 1917	Tamworth Airport, AU	monthly rain	63.5 mm (2.5 in)	15.7 mm (0.6 in)	1 year	31 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

1805 to 1917

Records set or tied on this calendar date in each year from 1805 to 1917. 1917 had 134 records.

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

Records on 09-19 in each year
Year	Records
1805	1
1818	1
1820	1
1825	1
1830	1
1833	1
1834	1
1837	1
1847	1
1848	1
1849	3
1851	2
1854	1
1855	1
1856	1
1859	1
1862	1
1865	2
1866	1
1869	1
1872	1
1874	1
1875	3
1877	2
1881	2
1882	4
1884	2
1885	1
1886	3
1887	2
1888	1
1889	7
1890	1
1893	3
1894	2
1895	5
1896	2
1897	4
1898	2
1899	2
1900	2
1901	17
1902	6
1903	16
1904	9
1905	18
1906	33
1907	9
1908	5
1909	16
1910	16
1911	4
1912	39
1913	200
1914	48
1915	174
1916	38
1917	134
1918	62
1919	52
1920	53
1921	109
1922	81
1923	83
1924	90
1925	356
1926	171
1927	152
1928	211
1929	435
1930	154
1931	400
1932	292
1933	343
1934	171
1935	240
1936	152
1937	331
1938	519
1939	292
1940	459
1941	430
1942	830
1943	540
1944	406
1945	417
1946	802
1947	694
1948	457
1949	303
1950	474
1951	240
1952	545
1953	467
1954	557
1955	578
1956	661
1957	638
1958	354
1959	774
1960	344
1961	445
1962	387
1963	403
1964	350
1965	1,080
1966	529
1967	417
1968	433
1969	493
1970	437
1971	1,127
1972	629
1973	438
1974	637
1975	570
1976	390
1977	719
1978	1,139
1979	727
1980	591
1981	1,462
1982	594
1983	1,630
1984	970
1985	926
1986	737
1987	1,113
1988	973
1989	911
1990	874
1991	2,027
1992	752
1993	885
1994	736
1995	1,096
1996	1,069
1997	1,107
1998	1,039
1999	611
2000	947
2001	1,188
2002	866
2003	1,094
2004	964
2005	814
2006	851
2007	633
2008	647
2009	700
2010	1,414
2011	848
2012	775
2013	578
2014	715
2015	520
2016	999
2017	703
2018	871
2019	584
2020	668
2021	511
2022	666
2023	622
2024	707
2025	554
2026	711

Download the Data

Data for records on 1917-09-19: 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 10	82
10 to 20	18
20 to 30	8
30 to 40	5
40 to 50	5
50 to 60	5
60 to 70	1