Weather Records on 10 September 1917

79 weather records were set or tied worldwide on 10 September 1917. Highest significance: Munchen-Nymphenburg, DE.

Key Facts for 10 September 1917

On 10 September 1917, 79 weather records were set or tied at long-record stations worldwide.
8 were record highs and 59 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 78 daily.
Munchen-Nymphenburg set a daily record precipitation of 74.3 mm (2.9 in) on 10 September 1917.
Across 166 earlier years (1812 to 2026) the same calendar date averaged 431 records.

Record Map

79 stations

79 station records on 10 September 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 September 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Munchen-Nymphenburg	Germany	Record daily precipitation	74.3 mm (2.9 in)	44 of 100 (Notable)
Oran-Hopital Militaire	Algeria	Record high minimum temperature	25.0 C (77.0 F)	34 of 100 (Routine)
Owen Sound	Canada	Record low maximum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
Buffalo	United States	Record low maximum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Port Dover	Canada	Record low maximum temperature	12.2 C (54.0 F)	22 of 100 (Routine)
Port Stanley	Canada	Record low maximum temperature	13.3 C (55.9 F)	22 of 100 (Routine)
Stratford	Canada	Record low maximum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Woodstock	Canada	Record low maximum temperature	11.1 C (52.0 F)	22 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low maximum temperature	11.1 C (52.0 F)	22 of 100 (Routine)
Camden 3 W	United States	Record daily precipitation	50.3 mm (2.0 in)	21 of 100 (Routine)
World Trade Ctr	United States	Record low maximum temperature	16.1 C (61.0 F)	20 of 100 (Routine)
Lucknow	Canada	Record low maximum temperature	10.6 C (51.1 F)	19 of 100 (Routine)
Ft Bidwell	United States	Record daily precipitation	0.5 mm (0.02 in)	19 of 100 (Routine)
Holbrook (Rsl)	Australia	Record daily precipitation	19.8 mm (0.8 in)	18 of 100 (Routine)
Vasilevici	Belarus	Record daily precipitation	14.0 mm (0.6 in)	18 of 100 (Routine)
Beatrice	Canada	Record low maximum temperature	10.6 C (51.1 F)	18 of 100 (Routine)
Southampton	Canada	Record low maximum temperature	10.6 C (51.1 F)	18 of 100 (Routine)
Welland	Canada	Record low maximum temperature	11.7 C (53.1 F)	18 of 100 (Routine)
Quebec	Canada	Record low maximum temperature	11.7 C (53.1 F)	18 of 100 (Routine)
Montreal McGill	Canada	Record low maximum temperature	11.1 C (52.0 F)	18 of 100 (Routine)
La Crosse Wb City	United States	Record low maximum temperature	13.3 C (55.9 F)	18 of 100 (Routine)
Philadelphia City	United States	Record low maximum temperature	17.2 C (63.0 F)	18 of 100 (Routine)
Stony Mountain	Canada	Record low minimum temperature	-5.6 C (21.9 F)	17 of 100 (Routine)
Ottawa	Canada	Record low maximum temperature	11.7 C (53.1 F)	17 of 100 (Routine)
Pirie (Bos)	South Africa	Record daily precipitation	26.4 mm (1.0 in)	17 of 100 (Routine)
Portland	United States	Record low minimum temperature	4.4 C (39.9 F)	17 of 100 (Routine)
Baltimore Customs House	United States	Record low maximum temperature	16.7 C (62.1 F)	17 of 100 (Routine)
Washington	United States	Record low maximum temperature	17.2 C (63.0 F)	17 of 100 (Routine)
Hughenden Post Office	Australia	Record daily precipitation	4.8 mm (0.19 in)	16 of 100 (Routine)
St Albans	Canada	Record low minimum temperature	-3.9 C (25.0 F)	16 of 100 (Routine)
Guelph Oac	Canada	Record low maximum temperature	9.4 C (48.9 F)	16 of 100 (Routine)
Milwaukee Wb City	United States	Record low maximum temperature	11.7 C (53.1 F)	16 of 100 (Routine)
Kingston Queens U	Canada	Record low minimum temperature	2.2 C (36.0 F)	15 of 100 (Routine)
Stonecliffe	Canada	Record low maximum temperature	10.0 C (50.0 F)	15 of 100 (Routine)
London South	Canada	Record low maximum temperature	12.8 C (55.0 F)	15 of 100 (Routine)
Fredericton Unb	Canada	Record low maximum temperature	13.3 C (55.9 F)	15 of 100 (Routine)
Yarmouth	Canada	Record low maximum temperature	12.8 C (55.0 F)	15 of 100 (Routine)
Toledo Blade	United States	Record low minimum temperature	4.4 C (39.9 F)	15 of 100 (Routine)
La Crosse Wb City	United States	Record low minimum temperature	1.1 C (34.0 F)	15 of 100 (Routine)
Madison Wb City	United States	Record low minimum temperature	3.3 C (37.9 F)	15 of 100 (Routine)
Green Bay	United States	Record low minimum temperature	2.2 C (36.0 F)	15 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low maximum temperature	17.2 C (63.0 F)	15 of 100 (Routine)
Parry Sound	Canada	Record low maximum temperature	12.2 C (54.0 F)	14 of 100 (Routine)
Vineland	United States	Record low maximum temperature	17.2 C (63.0 F)	14 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	13.9 C (57.0 F)	14 of 100 (Routine)
Hamilton	Canada	Record low maximum temperature	12.2 C (54.0 F)	13 of 100 (Routine)
Minnedosa	Canada	Record low minimum temperature	-5.0 C (23.0 F)	12 of 100 (Routine)
Moose Factory	Canada	Record low maximum temperature	11.7 C (53.1 F)	12 of 100 (Routine)
Lindsay	Canada	Record low maximum temperature	12.2 C (54.0 F)	12 of 100 (Routine)
Halifax	Canada	Record low maximum temperature	12.2 C (54.0 F)	11 of 100 (Routine)
Gladstone Post Office	Australia	Record daily precipitation	1.8 mm (0.07 in)	10 of 100 (Routine)
Pointe Au Pere	Canada	Record low maximum temperature	8.3 C (46.9 F)	10 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record low maximum temperature	7.8 C (46.0 F)	10 of 100 (Routine)
Burlington	United States	Record low maximum temperature	9.4 C (48.9 F)	10 of 100 (Routine)
Chaplin	Canada	Record daily precipitation	6.6 mm (0.26 in)	9 of 100 (Routine)
Kingston Queens U	Canada	Record low maximum temperature	12.2 C (54.0 F)	9 of 100 (Routine)
Fort National	Algeria	Record high minimum temperature	24.0 C (75.2 F)	8 of 100 (Routine)
Powell Creek	Australia	Record daily precipitation	2.8 mm (0.11 in)	8 of 100 (Routine)
Houston Wb City	United States	Record daily precipitation	35.3 mm (1.4 in)	8 of 100 (Routine)
McKinlay Roadhouse	Australia	Record daily precipitation	6.1 mm (0.24 in)	6 of 100 (Routine)

Counts by Type and Timescale

79 records

Records set or tied on 10 September 1917 by type: Highest daily maximum 1, Lowest daily maximum 46, Highest daily minimum 7, Lowest daily minimum 13, Heaviest daily rainfall 12.

Records on 10 September 1917 by type
Record type	Records
Highest daily maximum	1
Lowest daily maximum	46
Highest daily minimum	7
Lowest daily minimum	13
Heaviest daily rainfall	12
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 10 September 1917 by timescale: all-time 0, monthly 1, daily 78.

How Much Records Were Beaten By

66 broken records

Margins by which the 66 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 43.8. Ties are not counted.

Top 20 by Significance

10 September 1917

Top 20 records on 10 September 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 September 1917	Munchen-Nymphenburg, DE	daily rain	74.3 mm (2.9 in)	43.8 mm (1.7 in)	4 years	44 of 100 (Notable)
10 September 1917	Oran-Hopital Militaire, DZ	monthly high min	25.0 C (77.0 F)	0.3 C (0.5 F)	58 years	34 of 100 (Routine)
10 September 1917	Owen Sound, CA	daily low max	10.0 C (50.0 F)	5.6 C (10.1 F)	33 years	24 of 100 (Routine)
10 September 1917	Buffalo, US	daily low max	9.4 C (48.9 F)	5.0 C (9.0 F)	31 years	24 of 100 (Routine)
10 September 1917	Port Dover, CA	daily low max	12.2 C (54.0 F)	2.8 C (5.0 F)	40 years	22 of 100 (Routine)
10 September 1917	Port Stanley, CA	daily low max	13.3 C (55.9 F)	2.3 C (4.1 F)	40 years	22 of 100 (Routine)
10 September 1917	Stratford, CA	daily low max	12.8 C (55.0 F)	1.6 C (2.9 F)	49 years	22 of 100 (Routine)
10 September 1917	Woodstock, CA	daily low max	11.1 C (52.0 F)	3.3 C (5.9 F)	40 years	22 of 100 (Routine)
10 September 1917	Cleveland 2717 Euclid, US	daily low max	11.1 C (52.0 F)	3.9 C (7.0 F)	33 years	22 of 100 (Routine)
10 September 1917	Camden 3 W, US	daily rain	50.3 mm (2.0 in)	14.7 mm (0.6 in)	28 years	21 of 100 (Routine)
10 September 1917	World Trade Ctr, US	daily low max	16.1 C (61.0 F)	2.8 C (5.0 F)	33 years	20 of 100 (Routine)
10 September 1917	Lucknow, CA	daily low max	10.6 C (51.1 F)	6.1 C (11.0 F)	18 years	19 of 100 (Routine)
10 September 1917	Ft Bidwell, US	daily rain	0.5 mm (0.02 in)	0.5 mm (0.02 in)	49 years	19 of 100 (Routine)
10 September 1917	Holbrook (Rsl), AU	daily rain	19.8 mm (0.8 in)	4.1 mm (0.16 in)	31 years	18 of 100 (Routine)
10 September 1917	Vasilevici, BY	daily rain	14.0 mm (0.6 in)	4.0 mm (0.16 in)	31 years	18 of 100 (Routine)
10 September 1917	Beatrice, CA	daily low max	10.6 C (51.1 F)	3.3 C (5.9 F)	29 years	18 of 100 (Routine)
10 September 1917	Southampton, CA	daily low max	10.6 C (51.1 F)	3.3 C (5.9 F)	29 years	18 of 100 (Routine)
10 September 1917	Welland, CA	daily low max	11.7 C (53.1 F)	2.2 C (4.0 F)	33 years	18 of 100 (Routine)
10 September 1917	Quebec, CA	daily low max	11.7 C (53.1 F)	2.2 C (4.0 F)	33 years	18 of 100 (Routine)
10 September 1917	Montreal McGill, CA	daily low max	11.1 C (52.0 F)	2.2 C (4.0 F)	33 years	18 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 1917

Records set or tied on this calendar date in each year from 1812 to 1917. 1917 had 79 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 1917-09-10: 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).

Histogram of margins by which records were beaten on 10 September 1917
Margin	Records
0 to 10	63
10 to 20	2
20 to 30	0
30 to 40	0
40 to 50	1