Weather Records on 25 September 1917

138 weather records were set or tied worldwide on 25 September 1917. Highest significance: Belltrees Homestead, AU.

Key Facts for 25 September 1917

On 25 September 1917, 138 weather records were set or tied at long-record stations worldwide.
14 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 138 daily.
Belltrees Homestead set a daily record precipitation of 52.8 mm (2.1 in) on 25 September 1917.
Across 163 earlier years (1825 to 2026) the same calendar date averaged 428 records.

Record Map

138 stations

138 station records on 25 September 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 September 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Belltrees Homestead	Australia	Record daily precipitation	52.8 mm (2.1 in)	46 of 100 (Notable)
Maryborough	Australia	Record daily precipitation	58.9 mm (2.3 in)	44 of 100 (Notable)
Cataract River	Australia	Record daily precipitation	42.7 mm (1.7 in)	41 of 100 (Notable)
Bustard Head Lighthouse	Australia	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Derra	Australia	Record daily precipitation	40.6 mm (1.6 in)	35 of 100 (Notable)
Candelo Post Office	Australia	Record daily precipitation	46.2 mm (1.8 in)	35 of 100 (Notable)
Ellerston	Australia	Record daily precipitation	29.7 mm (1.2 in)	34 of 100 (Routine)
Menangle Jmai	Australia	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)
Bundaberg Post Office	Australia	Record daily precipitation	52.1 mm (2.1 in)	32 of 100 (Routine)
Eversleigh	Australia	Record daily precipitation	41.9 mm (1.6 in)	29 of 100 (Routine)
Woody Island	Australia	Record daily precipitation	36.6 mm (1.4 in)	28 of 100 (Routine)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	48.5 mm (1.9 in)	26 of 100 (Routine)
Goonal	Australia	Record daily precipitation	35.3 mm (1.4 in)	25 of 100 (Routine)
Armidale (Radio Station 2Ad)	Australia	Record daily precipitation	25.7 mm (1.0 in)	25 of 100 (Routine)
Maitland West	Australia	Record daily precipitation	27.2 mm (1.1 in)	25 of 100 (Routine)
Dungog (Cooreii)	Australia	Record daily precipitation	46.0 mm (1.8 in)	25 of 100 (Routine)
Berry Masonic Village	Australia	Record daily precipitation	55.9 mm (2.2 in)	24 of 100 (Routine)
Caboolture Post Office	Australia	Record daily precipitation	29.2 mm (1.1 in)	23 of 100 (Routine)
Morpeth Post Office	Australia	Record daily precipitation	44.5 mm (1.8 in)	22 of 100 (Routine)
Warialda Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Wollun	Australia	Record daily precipitation	31.8 mm (1.3 in)	21 of 100 (Routine)
Belltrees 1	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Goodooga (Brenda)	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Kew	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Enngonia (Morton Plains)	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Campbelltown 1	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Wingen (Murrulla)	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Waverley (Belltrees 2)	Australia	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Wanaaring Post Office	Australia	Record daily precipitation	12.4 mm (0.5 in)	20 of 100 (Routine)
Emmaville Post Office	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Scone (Philip Street)	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Ebor (Kotupna)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Jamberoo (Lorna)	Australia	Record daily precipitation	46.2 mm (1.8 in)	20 of 100 (Routine)
Bodalla Post Office	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Springsure Comet St	Australia	Record daily precipitation	11.4 mm (0.4 in)	19 of 100 (Routine)
Walgett (Dungalear)	Australia	Record daily precipitation	17.8 mm (0.7 in)	19 of 100 (Routine)
Branxton Post Office	Australia	Record daily precipitation	21.6 mm (0.9 in)	19 of 100 (Routine)
Camden Bowling Club	Australia	Record daily precipitation	23.4 mm (0.9 in)	19 of 100 (Routine)
St Helena Island	Australia	Record daily precipitation	34.5 mm (1.4 in)	18 of 100 (Routine)
Calga	Australia	Record daily precipitation	14.2 mm (0.6 in)	18 of 100 (Routine)
Pallal	Australia	Record daily precipitation	34.0 mm (1.3 in)	18 of 100 (Routine)
Murrurundi Post Office	Australia	Record daily precipitation	15.0 mm (0.6 in)	18 of 100 (Routine)
Newcastle Nobbys Signal Statio	Australia	Record daily precipitation	33.0 mm (1.3 in)	18 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record high minimum temperature	12.2 C (54.0 F)	18 of 100 (Routine)
Whitehead	Canada	Record daily precipitation	40.6 mm (1.6 in)	18 of 100 (Routine)
Weilmoringle	Australia	Record daily precipitation	6.6 mm (0.26 in)	17 of 100 (Routine)
Nocoleche	Australia	Record daily precipitation	6.9 mm (0.27 in)	17 of 100 (Routine)
Tenterden	Australia	Record daily precipitation	43.2 mm (1.7 in)	17 of 100 (Routine)
Wollongong Post Office	Australia	Record daily precipitation	33.0 mm (1.3 in)	17 of 100 (Routine)
Enngonia (Belalie)	Australia	Record daily precipitation	12.7 mm (0.5 in)	16 of 100 (Routine)
Walcha Post Office	Australia	Record daily precipitation	19.8 mm (0.8 in)	16 of 100 (Routine)
Gundy (Miller St)	Australia	Record daily precipitation	16.5 mm (0.6 in)	16 of 100 (Routine)
Nowra Council Offices	Australia	Record daily precipitation	26.7 mm (1.1 in)	16 of 100 (Routine)
Stony Mountain	Canada	Record high maximum temperature	26.7 C (80.1 F)	16 of 100 (Routine)
Dumble	Australia	Record daily precipitation	16.3 mm (0.6 in)	15 of 100 (Routine)
Cassilis Post Office	Australia	Record daily precipitation	14.5 mm (0.6 in)	15 of 100 (Routine)
Neilrex (Caigan)	Australia	Record daily precipitation	9.4 mm (0.37 in)	15 of 100 (Routine)
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	17.8 mm (0.7 in)	15 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	24.1 mm (0.9 in)	15 of 100 (Routine)
Bairnsdale 1	Australia	Record daily precipitation	27.4 mm (1.1 in)	15 of 100 (Routine)

Counts by Type and Timescale

138 records

Records set or tied on 25 September 1917 by type: Highest daily maximum 7, Lowest daily maximum 4, Highest daily minimum 7, Lowest daily minimum 3, Heaviest daily rainfall 117.

Records on 25 September 1917 by type
Record type	Records
Highest daily maximum	7
Lowest daily maximum	4
Highest daily minimum	7
Lowest daily minimum	3
Heaviest daily rainfall	117
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 25 September 1917 by timescale: all-time 0, monthly 0, daily 138.

How Much Records Were Beaten By

129 broken records

Margins by which the 129 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 54.8. Ties are not counted.

Top 20 by Significance

25 September 1917

Top 20 records on 25 September 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 September 1917	Belltrees Homestead, AU	daily rain	52.8 mm (2.1 in)	45.4 mm (1.8 in)	10 years	46 of 100 (Notable)
25 September 1917	Maryborough, AU	daily rain	58.9 mm (2.3 in)	54.8 mm (2.2 in)	0 years	44 of 100 (Notable)
25 September 1917	Cataract River, AU	daily rain	42.7 mm (1.7 in)	32.0 mm (1.3 in)	16 years	41 of 100 (Notable)
25 September 1917	Bustard Head Lighthouse, AU	daily rain	34.5 mm (1.4 in)	24.3 mm (1.0 in)	27 years	38 of 100 (Notable)
25 September 1917	Derra, AU	daily rain	40.6 mm (1.6 in)	25.4 mm (1.0 in)	0 years	35 of 100 (Notable)
25 September 1917	Candelo Post Office, AU	daily rain	46.2 mm (1.8 in)	37.3 mm (1.5 in)	24 years	35 of 100 (Notable)
25 September 1917	Ellerston, AU	daily rain	29.7 mm (1.2 in)	15.7 mm (0.6 in)	32 years	34 of 100 (Routine)
25 September 1917	Menangle Jmai, AU	daily rain	28.4 mm (1.1 in)	19.8 mm (0.8 in)	31 years	33 of 100 (Routine)
25 September 1917	Bundaberg Post Office, AU	daily rain	52.1 mm (2.1 in)	35.1 mm (1.4 in)	21 years	32 of 100 (Routine)
25 September 1917	Eversleigh, AU	daily rain	41.9 mm (1.6 in)	16.0 mm (0.6 in)	24 years	29 of 100 (Routine)
25 September 1917	Woody Island, AU	daily rain	36.6 mm (1.4 in)	24.4 mm (1.0 in)	16 years	28 of 100 (Routine)
25 September 1917	Mittagong (Beatrice Street), AU	daily rain	48.5 mm (1.9 in)	23.1 mm (0.9 in)	16 years	26 of 100 (Routine)
25 September 1917	Goonal, AU	daily rain	35.3 mm (1.4 in)	17.8 mm (0.7 in)	0 years	25 of 100 (Routine)
25 September 1917	Armidale (Radio Station 2Ad), AU	daily rain	25.7 mm (1.0 in)	10.2 mm (0.4 in)	26 years	25 of 100 (Routine)
25 September 1917	Maitland West, AU	daily rain	27.2 mm (1.1 in)	8.7 mm (0.34 in)	44 years	25 of 100 (Routine)
25 September 1917	Dungog (Cooreii), AU	daily rain	46.0 mm (1.8 in)	26.9 mm (1.1 in)	16 years	25 of 100 (Routine)
25 September 1917	Berry Masonic Village, AU	daily rain	55.9 mm (2.2 in)	32.3 mm (1.3 in)	16 years	24 of 100 (Routine)
25 September 1917	Caboolture Post Office, AU	daily rain	29.2 mm (1.1 in)	11.7 mm (0.5 in)	21 years	23 of 100 (Routine)
25 September 1917	Morpeth Post Office, AU	daily rain	44.5 mm (1.8 in)	28.0 mm (1.1 in)	0 years	22 of 100 (Routine)
25 September 1917	Warialda Post Office, AU	daily rain	27.9 mm (1.1 in)	6.8 mm (0.27 in)	37 years	21 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

1825 to 1917

Records set or tied on this calendar date in each year from 1825 to 1917. 1917 had 138 records.

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

Records on 09-25 in each year
Year	Records
1825	1
1834	1
1836	1
1842	1
1843	1
1847	1
1851	1
1852	1
1855	1
1857	2
1859	1
1860	1
1863	1
1865	1
1866	2
1867	2
1868	1
1871	2
1872	1
1874	1
1875	1
1877	3
1879	2
1881	3
1884	3
1885	6
1886	1
1887	3
1889	7
1891	3
1893	7
1894	3
1895	5
1896	5
1897	2
1898	1
1899	2
1900	7
1901	6
1902	11
1903	4
1904	10
1905	16
1906	7
1907	35
1908	20
1909	22
1910	5
1911	9
1912	63
1913	13
1914	15
1915	43
1916	139
1917	138
1918	16
1919	20
1920	75
1921	32
1922	47
1923	68
1924	157
1925	141
1926	740
1927	166
1928	480
1929	158
1930	489
1931	500
1932	260
1933	542
1934	394
1935	258
1936	274
1937	190
1938	335
1939	454
1940	517
1941	269
1942	970
1943	488
1944	246
1945	514
1946	292
1947	666
1948	501
1949	479
1950	1,163
1951	639
1952	515
1953	242
1954	292
1955	546
1956	503
1957	231
1958	454
1959	396
1960	694
1961	530
1962	305
1963	602
1964	403
1965	690
1966	334
1967	428
1968	300
1969	196
1970	783
1971	323
1972	706
1973	650
1974	995
1975	1,166
1976	541
1977	875
1978	462
1979	719
1980	687
1981	669
1982	759
1983	647
1984	1,305
1985	446
1986	1,766
1987	560
1988	571
1989	1,367
1990	875
1991	1,243
1992	1,346
1993	1,015
1994	666
1995	1,013
1996	648
1997	1,278
1998	1,346
1999	804
2000	1,536
2001	1,536
2002	876
2003	758
2004	519
2005	1,484
2006	767
2007	1,284
2008	766
2009	854
2010	1,125
2011	763
2012	505
2013	615
2014	800
2015	868
2016	781
2017	1,253
2018	648
2019	530
2020	1,089
2021	355
2022	301
2023	580
2024	1,120
2025	569
2026	473

Download the Data

Data for records on 1917-09-25: 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).

Histogram of margins by which records were beaten on 25 September 1917
Margin	Records
0 to 10	90
10 to 20	27
20 to 30	6
30 to 40	4
40 to 50	1
50 to 60	1