Weather Records on 20 September 1915

239 weather records were set or tied worldwide on 20 September 1915. Highest significance: Avoca (Post Office), AU.

Key Facts for 20 September 1915

On 20 September 1915, 239 weather records were set or tied at long-record stations worldwide.
4 were record highs and 17 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 233 daily.
Avoca (Post Office) set a monthly record daily precipitation of 68.1 mm (2.7 in) on 20 September 1915.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 443 records.

Record Map

239 stations

239 station records on 20 September 1915 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1915: highest significance records shown on the map
Station	Country	Type	Value	Significance
Avoca (Post Office)	Australia	Record daily precipitation	68.1 mm (2.7 in)	52 of 100 (Notable)
Daylesford	Australia	Record daily precipitation	54.6 mm (2.1 in)	52 of 100 (Notable)
Castlemaine	Australia	Record daily precipitation	45.7 mm (1.8 in)	50 of 100 (Notable)
Walcha Post Office	Australia	Record daily precipitation	45.7 mm (1.8 in)	49 of 100 (Notable)
Queanbeyan 2	Australia	Record daily precipitation	45.2 mm (1.8 in)	49 of 100 (Notable)
Marsden (Merungle)	Australia	Record daily precipitation	40.4 mm (1.6 in)	49 of 100 (Notable)
Tulcumbah	Australia	Record daily precipitation	43.7 mm (1.7 in)	46 of 100 (Notable)
Woods Point	Australia	Record daily precipitation	87.6 mm (3.4 in)	46 of 100 (Notable)
Cavendish (Post Office)	Australia	Record daily precipitation	42.4 mm (1.7 in)	46 of 100 (Notable)
Bowral Post Office	Australia	Record daily precipitation	39.9 mm (1.6 in)	45 of 100 (Notable)
Cavan	Australia	Record daily precipitation	45.2 mm (1.8 in)	45 of 100 (Notable)
Goulburn	Australia	Record daily precipitation	30.7 mm (1.2 in)	45 of 100 (Notable)
Bingara (Keera)	Australia	Record daily precipitation	55.9 mm (2.2 in)	44 of 100 (Notable)
Goonoo Goonoo Station	Australia	Record daily precipitation	47.2 mm (1.9 in)	44 of 100 (Notable)
Wollun	Australia	Record daily precipitation	41.1 mm (1.6 in)	43 of 100 (Notable)
Maldon (Derby Hill)	Australia	Record daily precipitation	35.8 mm (1.4 in)	43 of 100 (Notable)
Somerton (Bective Estate)	Australia	Record daily precipitation	41.1 mm (1.6 in)	42 of 100 (Notable)
Murrumburrah Old Post Office	Australia	Record daily precipitation	39.4 mm (1.6 in)	42 of 100 (Notable)
Milliwindi	Australia	Record daily precipitation	32.5 mm (1.3 in)	39 of 100 (Notable)
Armidale (Radio Station 2Ad)	Australia	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Queanbeyan Bowling Club	Australia	Record daily precipitation	41.9 mm (1.6 in)	39 of 100 (Notable)
Picton Council Depot	Australia	Record daily precipitation	36.6 mm (1.4 in)	38 of 100 (Notable)
Talyealye	Australia	Record daily precipitation	27.2 mm (1.1 in)	37 of 100 (Notable)
Mount Barker	Australia	Record daily precipitation	28.7 mm (1.1 in)	36 of 100 (Notable)
Mount Pleasant	Australia	Record daily precipitation	30.7 mm (1.2 in)	36 of 100 (Notable)
Fryerstown	Australia	Record daily precipitation	28.4 mm (1.1 in)	36 of 100 (Notable)
Heathcote	Australia	Record daily precipitation	33.3 mm (1.3 in)	36 of 100 (Notable)
Lobethal	Australia	Record daily precipitation	40.4 mm (1.6 in)	35 of 100 (Notable)
Bendemeer (Caroline St)	Australia	Record daily precipitation	47.0 mm (1.9 in)	35 of 100 (Notable)
Manilla Post Office	Australia	Record daily precipitation	37.6 mm (1.5 in)	35 of 100 (Notable)
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	34.0 mm (1.3 in)	35 of 100 (Notable)
Bungonia (Inverary Park)	Australia	Record daily precipitation	29.5 mm (1.2 in)	35 of 100 (Notable)
Mundoora	Australia	Record daily precipitation	25.1 mm (1.0 in)	34 of 100 (Routine)
Tamworth West	Australia	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Boorolong	Australia	Record daily precipitation	44.5 mm (1.8 in)	33 of 100 (Routine)
Condobolin Retirement Village	Australia	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Muswellbrook (Lower Hill St)	Australia	Record daily precipitation	29.2 mm (1.1 in)	31 of 100 (Routine)
Ellerston	Australia	Record daily precipitation	31.0 mm (1.2 in)	30 of 100 (Routine)
Bungaree (Kirks Reservoir)	Australia	Record daily precipitation	28.7 mm (1.1 in)	30 of 100 (Routine)
Newlyn Reservoir	Australia	Record daily precipitation	31.8 mm (1.3 in)	30 of 100 (Routine)
Woodside	Australia	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Gundaroo (Bairnsdale)	Australia	Record daily precipitation	25.9 mm (1.0 in)	29 of 100 (Routine)
Murchison	Australia	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Omeo Comparison	Australia	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Wickliffe	Australia	Record daily precipitation	29.2 mm (1.1 in)	29 of 100 (Routine)
Bodalla Post Office	Australia	Record daily precipitation	57.7 mm (2.3 in)	28 of 100 (Routine)
Bingara Post Office	Australia	Record daily precipitation	41.4 mm (1.6 in)	27 of 100 (Routine)
Breeza (Main Street)	Australia	Record daily precipitation	26.2 mm (1.0 in)	27 of 100 (Routine)
Murtoa	Australia	Record daily precipitation	44.7 mm (1.8 in)	27 of 100 (Routine)
Ballan	Australia	Record daily precipitation	33.5 mm (1.3 in)	27 of 100 (Routine)
Eversleigh	Australia	Record daily precipitation	35.8 mm (1.4 in)	26 of 100 (Routine)
Wallaloo	Australia	Record daily precipitation	26.9 mm (1.1 in)	26 of 100 (Routine)
Bundarra Post Office	Australia	Record daily precipitation	34.8 mm (1.4 in)	25 of 100 (Routine)
Lancefield	Australia	Record daily precipitation	26.9 mm (1.1 in)	25 of 100 (Routine)
Crookwell Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	24 of 100 (Routine)
Inverell Comparison	Australia	Record daily precipitation	32.5 mm (1.3 in)	23 of 100 (Routine)
Nowra Council Offices	Australia	Record daily precipitation	29.2 mm (1.1 in)	22 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	27.2 mm (1.1 in)	22 of 100 (Routine)
Hahndorf	Australia	Record daily precipitation	25.9 mm (1.0 in)	21 of 100 (Routine)
Mount Torrens	Australia	Record daily precipitation	26.7 mm (1.1 in)	21 of 100 (Routine)

Counts by Type and Timescale

239 records

Records set or tied on 20 September 1915 by type: Highest daily maximum 2, Lowest daily maximum 11, Highest daily minimum 2, Lowest daily minimum 6, Heaviest daily rainfall 218.

Records on 20 September 1915 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	11
Highest daily minimum	2
Lowest daily minimum	6
Heaviest daily rainfall	218
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 September 1915 by timescale: all-time 0, monthly 6, daily 233.

How Much Records Were Beaten By

226 broken records

Margins by which the 226 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 68.5. Ties are not counted.

Top 20 by Significance

20 September 1915

Top 20 records on 20 September 1915 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1915	Avoca (Post Office), AU	monthly rain	68.1 mm (2.7 in)	24.4 mm (1.0 in)	12 years	52 of 100 (Notable)
20 September 1915	Daylesford, AU	daily rain	54.6 mm (2.1 in)	37.8 mm (1.5 in)	28 years	52 of 100 (Notable)
20 September 1915	Castlemaine, AU	daily rain	45.7 mm (1.8 in)	31.7 mm (1.2 in)	23 years	50 of 100 (Notable)
20 September 1915	Walcha Post Office, AU	daily rain	45.7 mm (1.8 in)	32.2 mm (1.3 in)	31 years	49 of 100 (Notable)
20 September 1915	Queanbeyan 2, AU	daily rain	45.2 mm (1.8 in)	27.2 mm (1.1 in)	22 years	49 of 100 (Notable)
20 September 1915	Marsden (Merungle), AU	daily rain	40.4 mm (1.6 in)	39.6 mm (1.6 in)	22 years	49 of 100 (Notable)
20 September 1915	Tulcumbah, AU	daily rain	43.7 mm (1.7 in)	30.2 mm (1.2 in)	31 years	46 of 100 (Notable)
20 September 1915	Woods Point, AU	daily rain	87.6 mm (3.4 in)	68.5 mm (2.7 in)	10 years	46 of 100 (Notable)
20 September 1915	Cavendish (Post Office), AU	daily rain	42.4 mm (1.7 in)	32.2 mm (1.3 in)	10 years	46 of 100 (Notable)
20 September 1915	Bowral Post Office, AU	daily rain	39.9 mm (1.6 in)	33.0 mm (1.3 in)	22 years	45 of 100 (Notable)
20 September 1915	Cavan, AU	daily rain	45.2 mm (1.8 in)	31.7 mm (1.2 in)	6 years	45 of 100 (Notable)
20 September 1915	Goulburn, AU	daily rain	30.7 mm (1.2 in)	21.6 mm (0.9 in)	44 years	45 of 100 (Notable)
20 September 1915	Bingara (Keera), AU	daily rain	55.9 mm (2.2 in)	46.2 mm (1.8 in)	4 years	44 of 100 (Notable)
20 September 1915	Goonoo Goonoo Station, AU	daily rain	47.2 mm (1.9 in)	28.9 mm (1.1 in)	31 years	44 of 100 (Notable)
20 September 1915	Wollun, AU	daily rain	41.1 mm (1.6 in)	29.7 mm (1.2 in)	15 years	43 of 100 (Notable)
20 September 1915	Maldon (Derby Hill), AU	daily rain	35.8 mm (1.4 in)	28.7 mm (1.1 in)	5 years	43 of 100 (Notable)
20 September 1915	Somerton (Bective Estate), AU	daily rain	41.1 mm (1.6 in)	28.4 mm (1.1 in)	22 years	42 of 100 (Notable)
20 September 1915	Murrumburrah Old Post Office, AU	daily rain	39.4 mm (1.6 in)	25.4 mm (1.0 in)	9 years	42 of 100 (Notable)
20 September 1915	Milliwindi, AU	daily rain	32.5 mm (1.3 in)	22.8 mm (0.9 in)	22 years	39 of 100 (Notable)
20 September 1915	Armidale (Radio Station 2Ad), AU	daily rain	35.6 mm (1.4 in)	18.1 mm (0.7 in)	51 years	39 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

1812 to 1915

Records set or tied on this calendar date in each year from 1812 to 1915. 1915 had 239 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 1915-09-20: 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	140
10 to 20	53
20 to 30	22
30 to 40	9
40 to 50	1
50 to 60	0
60 to 70	1