Weather Records on 10 September 1915

53 weather records were set or tied worldwide on 10 September 1915. Highest significance: Chatham, CA.

Key Facts for 10 September 1915

On 10 September 1915, 53 weather records were set or tied at long-record stations worldwide.
32 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 50 daily.
Chatham set a daily record high minimum temperature of 18.3 C (64.9 F) on 10 September 1915.
Across 166 earlier years (1812 to 2026) the same calendar date averaged 431 records.

Record Map

53 stations

53 station records on 10 September 1915 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 September 1915: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chatham	Canada	Record high minimum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Charlottetown	Canada	Record high minimum temperature	19.4 C (66.9 F)	21 of 100 (Routine)
Haparanda	Sweden	Record high maximum temperature	20.5 C (68.9 F)	21 of 100 (Routine)
Oran-Hopital Militaire	Algeria	Record daily precipitation	7.0 mm (0.28 in)	20 of 100 (Routine)
Yielima Post Office	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Yanco Glen (Corona Homestead)	Australia	Record daily precipitation	12.4 mm (0.5 in)	20 of 100 (Routine)
Chicoutimi	Canada	Record high minimum temperature	16.1 C (61.0 F)	19 of 100 (Routine)
Fredericton Unb	Canada	Record high minimum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Milwaukee Wb City	United States	Record daily precipitation	24.9 mm (1.0 in)	19 of 100 (Routine)
Hillston (Cowl Cowl)	Australia	Record daily precipitation	12.4 mm (0.5 in)	18 of 100 (Routine)
Philadelphia City	United States	Record high minimum temperature	24.4 C (75.9 F)	17 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record low minimum temperature	2.4 C (36.3 F)	16 of 100 (Routine)
Springbok	South Africa	Record daily precipitation	7.6 mm (0.30 in)	15 of 100 (Routine)
Umea	Sweden	Record high maximum temperature	21.0 C (69.8 F)	15 of 100 (Routine)
Alice Springs Post Office	Australia	Record high minimum temperature	16.1 C (61.0 F)	14 of 100 (Routine)
Nicola Lake	Canada	Record daily precipitation	5.8 mm (0.23 in)	14 of 100 (Routine)
Baltimore Customs House	United States	Record high minimum temperature	24.4 C (75.9 F)	14 of 100 (Routine)
Ekaterinburg	Russia	Record daily precipitation	10.3 mm (0.4 in)	13 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	29.2 mm (1.1 in)	13 of 100 (Routine)
Harnosand	Sweden	Record high maximum temperature	21.5 C (70.7 F)	13 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	11.5 C (52.7 F)	13 of 100 (Routine)
Hallett	Australia	Record daily precipitation	16.8 mm (0.7 in)	11 of 100 (Routine)
Halifax	Canada	Record high minimum temperature	17.2 C (63.0 F)	11 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	20.6 mm (0.8 in)	11 of 100 (Routine)
Knysna (Tnk)	South Africa	Record daily precipitation	23.1 mm (0.9 in)	11 of 100 (Routine)
Prince Albert	Canada	Record low maximum temperature	6.7 C (44.1 F)	10 of 100 (Routine)
Harnosand	Sweden	Record high minimum temperature	11.0 C (51.8 F)	10 of 100 (Routine)
Umea	Sweden	Record high minimum temperature	11.5 C (52.7 F)	10 of 100 (Routine)
Karesuando	Sweden	Record high minimum temperature	8.0 C (46.4 F)	10 of 100 (Routine)
Arnsberg	Germany	Record low minimum temperature	3.9 C (39.0 F)	9 of 100 (Routine)
Blue Hill Coop	United States	Record high minimum temperature	20.6 C (69.1 F)	9 of 100 (Routine)
Sydney	Canada	Record high maximum temperature	26.7 C (80.1 F)	8 of 100 (Routine)
Orebro	Sweden	Record high maximum temperature	23.0 C (73.4 F)	8 of 100 (Routine)
Charlottetown	Canada	Record high maximum temperature	25.6 C (78.1 F)	7 of 100 (Routine)
Tranebjerg	Denmark	Record low minimum temperature	5.8 C (42.4 F)	6 of 100 (Routine)
Cape May 2 NW	United States	Record high maximum temperature	31.1 C (88.0 F)	6 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record daily precipitation	7.8 mm (0.31 in)	5 of 100 (Routine)
Sydney	Canada	Record high minimum temperature	18.9 C (66.0 F)	5 of 100 (Routine)
Bamberg	Germany	Record low minimum temperature	4.4 C (39.9 F)	5 of 100 (Routine)
Yalta	Ukraine	Record daily precipitation	0.8 mm (0.03 in)	5 of 100 (Routine)
Wilmington Wb City	United States	Record high maximum temperature	35.6 C (96.1 F)	4 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record high maximum temperature	23.5 C (74.3 F)	3 of 100 (Routine)
Bjuraker	Sweden	Record high maximum temperature	21.5 C (70.7 F)	3 of 100 (Routine)
Cape May 2 NW	United States	Record high minimum temperature	23.3 C (73.9 F)	3 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high minimum temperature	22.8 C (73.0 F)	3 of 100 (Routine)
Walgett Council Depot	Australia	Record low minimum temperature	1.7 C (35.1 F)	2 of 100 (Routine)
Wagga Wagga (Kooringal)	Australia	Record low minimum temperature	0.0 C (32.0 F)	2 of 100 (Routine)
Dalhousie	Canada	Record high maximum temperature	23.9 C (75.0 F)	2 of 100 (Routine)
Gavle	Sweden	Record high maximum temperature	21.5 C (70.7 F)	2 of 100 (Routine)
Houston Wb City	United States	Record high minimum temperature	24.4 C (75.9 F)	1 of 100 (Routine)
Atlantic City Marina	United States	Record high maximum temperature	32.8 C (91.0 F)	1 of 100 (Routine)
Vanersborg	Sweden	Record high maximum temperature	22.5 C (72.5 F)	0 of 100 (Routine)
Skara 1	Sweden	Record high maximum temperature	23.0 C (73.4 F)	0 of 100 (Routine)

Counts by Type and Timescale

53 records

Records set or tied on 10 September 1915 by type: Highest daily maximum 15, Lowest daily maximum 1, Highest daily minimum 17, Lowest daily minimum 6, Heaviest daily rainfall 14.

Records on 10 September 1915 by type
Record type	Records
Highest daily maximum	15
Lowest daily maximum	1
Highest daily minimum	17
Lowest daily minimum	6
Heaviest daily rainfall	14
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 10 September 1915 by timescale: all-time 0, monthly 3, daily 50.

How Much Records Were Beaten By

39 broken records

Margins by which the 39 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 12.9. Ties are not counted.

Top 20 by Significance

10 September 1915

Top 20 records on 10 September 1915 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 September 1915	Chatham, CA	daily high min	18.3 C (64.9 F)	3.9 C (7.0 F)	26 years	21 of 100 (Routine)
10 September 1915	Charlottetown, CA	daily high min	19.4 C (66.9 F)	3.3 C (5.9 F)	26 years	21 of 100 (Routine)
10 September 1915	Haparanda, SE	monthly high max	20.5 C (68.9 F)	0.5 C (0.9 F)	26 years	21 of 100 (Routine)
10 September 1915	Oran-Hopital Militaire, DZ	daily rain	7.0 mm (0.28 in)	7.0 mm (0.28 in)	62 years	20 of 100 (Routine)
10 September 1915	Yielima Post Office, AU	daily rain	21.8 mm (0.9 in)	12.9 mm (0.5 in)	5 years	20 of 100 (Routine)
10 September 1915	Yanco Glen (Corona Homestead), AU	daily rain	12.4 mm (0.5 in)	11.4 mm (0.4 in)	20 years	20 of 100 (Routine)
10 September 1915	Chicoutimi, CA	daily high min	16.1 C (61.0 F)	4.4 C (7.9 F)	25 years	19 of 100 (Routine)
10 September 1915	Fredericton Unb, CA	daily high min	17.8 C (64.0 F)	3.4 C (6.1 F)	26 years	19 of 100 (Routine)
10 September 1915	Milwaukee Wb City, US	daily rain	24.9 mm (1.0 in)	5.3 mm (0.21 in)	38 years	19 of 100 (Routine)
10 September 1915	Hillston (Cowl Cowl), AU	daily rain	12.4 mm (0.5 in)	5.3 mm (0.21 in)	29 years	18 of 100 (Routine)
10 September 1915	Philadelphia City, US	daily high min	24.4 C (75.9 F)	1.6 C (2.9 F)	30 years	17 of 100 (Routine)
10 September 1915	Heinersreuth-Vollhof, DE	daily low min	2.4 C (36.3 F)	1.5 C (2.7 F)	32 years	16 of 100 (Routine)
10 September 1915	Springbok, ZA	daily rain	7.6 mm (0.30 in)	4.6 mm (0.18 in)	21 years	15 of 100 (Routine)
10 September 1915	Umea, SE	daily high max	21.0 C (69.8 F)	1.0 C (1.8 F)	30 years	15 of 100 (Routine)
10 September 1915	Alice Springs Post Office, AU	daily high min	16.1 C (61.0 F)	0.5 C (0.9 F)	33 years	14 of 100 (Routine)
10 September 1915	Nicola Lake, CA	daily rain	5.8 mm (0.23 in)	1.0 mm (0.04 in)	30 years	14 of 100 (Routine)
10 September 1915	Baltimore Customs House, US	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	30 years	14 of 100 (Routine)
10 September 1915	Ekaterinburg, RU	daily rain	10.3 mm (0.4 in)	1.1 mm (0.04 in)	26 years	13 of 100 (Routine)
10 September 1915	Ladismith (Tnk), ZA	daily rain	29.2 mm (1.1 in)	7.6 mm (0.30 in)	9 years	13 of 100 (Routine)
10 September 1915	Harnosand, SE	daily high max	21.5 C (70.7 F)	0.5 C (0.9 F)	30 years	13 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

1812 to 1915

Records set or tied on this calendar date in each year from 1812 to 1915. 1915 had 53 records.

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

Records on 09-10 in each year
Year	Records
1812	1
1813	1
1814	2
1818	1
1838	2
1841	1
1846	1
1847	1
1848	1
1850	2
1854	3
1857	1
1858	1
1865	5
1868	1
1869	2
1871	1
1874	2
1875	1
1876	2
1878	1
1879	2
1880	3
1881	2
1883	3
1884	4
1885	2
1886	1
1887	1
1888	2
1889	3
1890	1
1891	3
1892	3
1893	2
1894	4
1895	3
1896	1
1897	7
1898	4
1899	10
1901	1
1902	10
1903	13
1904	5
1905	7
1906	23
1907	15
1908	15
1909	25
1910	26
1911	8
1912	62
1913	24
1914	43
1915	53
1916	15
1917	79
1918	33
1919	42
1920	132
1921	207
1922	78
1923	38
1924	335
1925	197
1926	68
1927	262
1928	109
1929	282
1930	161
1931	724
1932	258
1933	333
1934	247
1935	478
1936	336
1937	376
1938	369
1939	386
1940	410
1941	389
1942	271
1943	352
1944	470
1945	334
1946	295
1947	534
1948	432
1949	793
1950	394
1951	344
1952	476
1953	250
1954	271
1955	376
1956	834
1957	332
1958	435
1959	670
1960	376
1961	459
1962	798
1963	384
1964	710
1965	355
1966	330
1967	512
1968	846
1969	635
1970	582
1971	400
1972	477
1973	559
1974	522
1975	528
1976	1,041
1977	391
1978	883
1979	563
1980	716
1981	629
1982	687
1983	1,329
1984	824
1985	1,140
1986	960
1987	574
1988	783
1989	1,098
1990	782
1991	827
1992	745
1993	936
1994	816
1995	643
1996	1,003
1997	829
1998	1,832
1999	1,068
2000	1,088
2001	1,129
2002	1,298
2003	1,149
2004	652
2005	1,173
2006	1,110
2007	866
2008	975
2009	636
2010	1,273
2011	1,235
2012	793
2013	1,198
2014	894
2015	789
2016	1,085
2017	674
2018	1,030
2019	816
2020	2,105
2021	1,311
2022	633
2023	1,114
2024	933
2025	583
2026	832

Download the Data

Data for records on 1915-09-10: 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 2	27
2 to 4	3
4 to 6	5
6 to 8	2
8 to 10	0
10 to 12	1
12 to 14	1