Weather Records on 11 October 1917

48 weather records were set or tied worldwide on 11 October 1917. Highest significance: Sydney (Observatory Hill), AU.

Key Facts for 11 October 1917

On 11 October 1917, 48 weather records were set or tied at long-record stations worldwide.
4 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 48 daily.
Sydney (Observatory Hill) set a daily record low minimum temperature of 8.3 C (46.9 F) on 11 October 1917.
Across 165 earlier years (1793 to 2026) the same calendar date averaged 457 records.

Record Map

48 stations

48 station records on 11 October 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 October 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sydney (Observatory Hill)	Australia	Record low minimum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Portland	United States	Record low maximum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Vineland	United States	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Concord	United States	Record low maximum temperature	6.7 C (44.1 F)	20 of 100 (Routine)
Umzimkulu (Tnk)	South Africa	Record daily precipitation	27.9 mm (1.1 in)	19 of 100 (Routine)
Nidingen A	Sweden	Record daily precipitation	13.3 mm (0.5 in)	18 of 100 (Routine)
London South	Canada	Record low minimum temperature	-5.0 C (23.0 F)	17 of 100 (Routine)
Quebec	Canada	Record low maximum temperature	4.4 C (39.9 F)	17 of 100 (Routine)
Wagga Wagga (Kooringal)	Australia	Record low minimum temperature	-0.6 C (30.9 F)	16 of 100 (Routine)
Melbourne Regional Office	Australia	Record low minimum temperature	2.0 C (35.6 F)	16 of 100 (Routine)
Stony Mountain	Canada	Record daily snowfall	0.8 cm (0.3 in)	16 of 100 (Routine)
Middletown 4 W	United States	Record low maximum temperature	7.8 C (46.0 F)	16 of 100 (Routine)
Blue Hill Coop	United States	Record low maximum temperature	6.7 C (44.1 F)	15 of 100 (Routine)
Hohenpeissenberg	Germany	Record daily precipitation	23.8 mm (0.9 in)	14 of 100 (Routine)
Zagreb-Gric	Croatia	Record high maximum temperature	24.4 C (75.9 F)	14 of 100 (Routine)
Quantambone	Australia	Record daily precipitation	8.9 mm (0.35 in)	13 of 100 (Routine)
Ooma	Australia	Record daily precipitation	10.9 mm (0.4 in)	13 of 100 (Routine)
Lucknow	Canada	Record low minimum temperature	-5.6 C (21.9 F)	13 of 100 (Routine)
Sacramento 5 ESE	United States	Record high maximum temperature	33.9 C (93.0 F)	13 of 100 (Routine)
Fredericton Unb	Canada	Record low maximum temperature	6.1 C (43.0 F)	12 of 100 (Routine)
Ft Bidwell	United States	Record high maximum temperature	27.2 C (81.0 F)	12 of 100 (Routine)
Altastenberg	Germany	Record low maximum temperature	4.7 C (40.5 F)	11 of 100 (Routine)
Swift Current	Canada	Record low minimum temperature	-11.1 C (12.0 F)	9 of 100 (Routine)
Anticosti West Point	Canada	Record daily precipitation	20.3 mm (0.8 in)	9 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record low maximum temperature	4.4 C (39.9 F)	9 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record daily snowfall	1.5 cm (0.6 in)	8 of 100 (Routine)
Cape May 2 NW	United States	Record daily precipitation	20.8 mm (0.8 in)	8 of 100 (Routine)
Winnemucca AP	United States	Record high maximum temperature	27.8 C (82.0 F)	8 of 100 (Routine)
Darwin Post Office	Australia	Record low minimum temperature	22.5 C (72.5 F)	7 of 100 (Routine)
Walgett Council Depot	Australia	Record low minimum temperature	3.9 C (39.0 F)	7 of 100 (Routine)
Stony Mountain	Canada	Record low minimum temperature	-6.7 C (19.9 F)	7 of 100 (Routine)
La Crosse Wb City	United States	Record low maximum temperature	4.4 C (39.9 F)	7 of 100 (Routine)
Brisbane Regional Office	Australia	Record low minimum temperature	10.0 C (50.0 F)	6 of 100 (Routine)
Huron Rgnl AP	United States	Record low minimum temperature	-5.6 C (21.9 F)	6 of 100 (Routine)
Oran-Hopital Militaire	Algeria	Record low maximum temperature	20.0 C (68.0 F)	5 of 100 (Routine)
Port Dover	Canada	Record low minimum temperature	-1.1 C (30.0 F)	4 of 100 (Routine)
Port Stanley	Canada	Record low minimum temperature	-2.8 C (27.0 F)	4 of 100 (Routine)
New Westminster	Canada	Record low maximum temperature	10.0 C (50.0 F)	3 of 100 (Routine)
Stratford	Canada	Record low minimum temperature	-4.4 C (24.1 F)	3 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record low maximum temperature	22.0 C (71.6 F)	2 of 100 (Routine)
Fort National	Algeria	Record low maximum temperature	15.0 C (59.0 F)	2 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record low maximum temperature	15.6 C (60.1 F)	2 of 100 (Routine)
Pointe Au Pere	Canada	Record low minimum temperature	-5.6 C (21.9 F)	2 of 100 (Routine)
Qu'appelle	Canada	Record low minimum temperature	-8.9 C (16.0 F)	1 of 100 (Routine)
St Albans	Canada	Record low maximum temperature	1.1 C (34.0 F)	1 of 100 (Routine)
Alton	Canada	Record low minimum temperature	-3.9 C (25.0 F)	1 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record low minimum temperature	-3.9 C (25.0 F)	1 of 100 (Routine)
Setauket Strong	United States	Record low maximum temperature	9.4 C (48.9 F)	1 of 100 (Routine)

Counts by Type and Timescale

48 records

Records set or tied on 11 October 1917 by type: Highest daily maximum 4, Lowest daily maximum 16, Lowest daily minimum 18, Heaviest daily rainfall 8, Heaviest daily snowfall 2.

Records on 11 October 1917 by type
Record type	Records
Highest daily maximum	4
Lowest daily maximum	16
Highest daily minimum	0
Lowest daily minimum	18
Heaviest daily rainfall	8
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 11 October 1917 by timescale: all-time 0, monthly 0, daily 48.

How Much Records Were Beaten By

34 broken records

Margins by which the 34 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 12.0. Ties are not counted.

Top 20 by Significance

11 October 1917

Top 20 records on 11 October 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 October 1917	Sydney (Observatory Hill), AU	daily low min	8.3 C (46.9 F)	0.5 C (0.9 F)	54 years	22 of 100 (Routine)
11 October 1917	Portland, US	daily low max	4.4 C (39.9 F)	5.6 C (10.1 F)	20 years	22 of 100 (Routine)
11 October 1917	Vineland, US	daily rain	17.3 mm (0.7 in)	8.4 mm (0.33 in)	49 years	20 of 100 (Routine)
11 October 1917	Concord, US	daily low max	6.7 C (44.1 F)	1.1 C (2.0 F)	44 years	20 of 100 (Routine)
11 October 1917	Umzimkulu (Tnk), ZA	daily rain	27.9 mm (1.1 in)	10.9 mm (0.4 in)	16 years	19 of 100 (Routine)
11 October 1917	Nidingen A, SE	daily rain	13.3 mm (0.5 in)	6.0 mm (0.24 in)	19 years	18 of 100 (Routine)
11 October 1917	London South, CA	daily low min	-5.0 C (23.0 F)	3.3 C (5.9 F)	28 years	17 of 100 (Routine)
11 October 1917	Quebec, CA	daily low max	4.4 C (39.9 F)	1.7 C (3.1 F)	35 years	17 of 100 (Routine)
11 October 1917	Wagga Wagga (Kooringal), AU	daily low min	-0.6 C (30.9 F)	1.2 C (2.2 F)	33 years	16 of 100 (Routine)
11 October 1917	Melbourne Regional Office, AU	daily low min	2.0 C (35.6 F)	0.3 C (0.5 F)	34 years	16 of 100 (Routine)
11 October 1917	Stony Mountain, CA	daily snowfall	0.8 cm (0.3 in)	0.8 cm (0.3 in)	38 years	16 of 100 (Routine)
11 October 1917	Middletown 4 W, US	daily low max	7.8 C (46.0 F)	0.3 C (0.5 F)	41 years	16 of 100 (Routine)
11 October 1917	Blue Hill Coop, US	daily low max	6.7 C (44.1 F)	3.3 C (5.9 F)	20 years	15 of 100 (Routine)
11 October 1917	Hohenpeissenberg, DE	daily rain	23.8 mm (0.9 in)	0.6 mm (0.02 in)	12 years	14 of 100 (Routine)
11 October 1917	Zagreb-Gric, HR	daily high max	24.4 C (75.9 F)	1.5 C (2.7 F)	27 years	14 of 100 (Routine)
11 October 1917	Quantambone, AU	daily rain	8.9 mm (0.35 in)	5.9 mm (0.23 in)	19 years	13 of 100 (Routine)
11 October 1917	Ooma, AU	daily rain	10.9 mm (0.4 in)	6.8 mm (0.27 in)	8 years	13 of 100 (Routine)
11 October 1917	Lucknow, CA	daily low min	-5.6 C (21.9 F)	3.4 C (6.1 F)	11 years	13 of 100 (Routine)
11 October 1917	Sacramento 5 ESE, US	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	28 years	13 of 100 (Routine)
11 October 1917	Fredericton Unb, CA	daily low max	6.1 C (43.0 F)	0.6 C (1.1 F)	25 years	12 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

1793 to 1917

Records set or tied on this calendar date in each year from 1793 to 1917. 1917 had 48 records.

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

Records on 10-11 in each year
Year	Records
1793	1
1801	1
1802	2
1803	1
1805	1
1807	1
1811	1
1814	2
1839	1
1845	1
1849	1
1851	1
1852	1
1854	1
1859	1
1860	4
1861	1
1864	2
1867	2
1869	1
1870	1
1872	2
1873	2
1875	1
1876	4
1877	3
1879	2
1880	2
1884	2
1885	5
1887	4
1888	2
1889	3
1890	1
1891	2
1892	2
1896	2
1897	4
1898	4
1900	1
1901	8
1902	14
1903	10
1904	20
1905	17
1906	52
1907	10
1908	11
1909	17
1910	31
1911	14
1912	21
1913	48
1914	40
1915	14
1916	25
1917	48
1918	32
1919	76
1920	140
1921	92
1922	35
1923	231
1924	149
1925	196
1926	137
1927	176
1928	713
1929	259
1930	656
1931	396
1932	235
1933	200
1934	862
1935	245
1936	243
1937	242
1938	438
1939	249
1940	201
1941	190
1942	537
1943	414
1944	247
1945	284
1946	770
1947	405
1948	736
1949	835
1950	450
1951	538
1952	472
1953	408
1954	672
1955	434
1956	894
1957	258
1958	795
1959	1,027
1960	333
1961	610
1962	857
1963	570
1964	927
1965	202
1966	279
1967	643
1968	312
1969	1,032
1970	859
1971	521
1972	708
1973	1,325
1974	356
1975	559
1976	565
1977	655
1978	426
1979	1,260
1980	478
1981	776
1982	1,141
1983	542
1984	552
1985	977
1986	961
1987	1,603
1988	621
1989	571
1990	1,617
1991	1,055
1992	527
1993	883
1994	726
1995	975
1996	842
1997	1,809
1998	750
1999	996
2000	1,782
2001	962
2002	1,000
2003	1,191
2004	593
2005	1,044
2006	840
2007	610
2008	1,369
2009	2,594
2010	964
2011	1,176
2012	696
2013	666
2014	620
2015	1,032
2016	378
2017	1,101
2018	1,517
2019	1,760
2020	680
2021	873
2022	244
2023	858
2024	842
2025	711
2026	864

Download the Data

Data for records on 1917-10-11: 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	20
2 to 4	5
4 to 6	3
6 to 8	2
8 to 10	2
10 to 12	2