Weather Records on 9 December 1917

106 weather records were set or tied worldwide on 9 December 1917. Highest significance: Parry Sound, CA.

Key Facts for 9 December 1917

On 9 December 1917, 106 weather records were set or tied at long-record stations worldwide.
2 were record highs and 46 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 104 daily.
Parry Sound set a daily record snowfall of 45.7 cm (18.0 in) on 9 December 1917.
Across 157 earlier years (1796 to 2025) the same calendar date averaged 478 records.

Record Map

106 stations

106 station records on 9 December 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 December 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Parry Sound	Canada	Record daily snowfall	45.7 cm (18.0 in)	48 of 100 (Notable)
Parry Sound	Canada	Record daily precipitation	45.7 mm (1.8 in)	45 of 100 (Notable)
Buffalo	United States	Record daily snowfall	25.4 cm (10.0 in)	42 of 100 (Notable)
Glen Innes Post Office	Australia	Record daily precipitation	45.7 mm (1.8 in)	37 of 100 (Notable)
Quebec	Canada	Record daily snowfall	25.4 cm (10.0 in)	37 of 100 (Notable)
Normanton Post Office	Australia	Record daily precipitation	105.4 mm (4.1 in)	34 of 100 (Routine)
Port Dover	Canada	Record daily snowfall	18.5 cm (7.3 in)	29 of 100 (Routine)
Stratford	Canada	Record daily snowfall	20.3 cm (8.0 in)	26 of 100 (Routine)
Hamilton	Canada	Record low maximum temperature	-12.8 C (9.0 F)	26 of 100 (Routine)
Montgomery Wb City	United States	Record low minimum temperature	-9.4 C (15.1 F)	25 of 100 (Routine)
Little Rock St Capitol	United States	Record low minimum temperature	-15.0 C (5.0 F)	25 of 100 (Routine)
Welland	Canada	Record daily snowfall	22.9 cm (9.0 in)	24 of 100 (Routine)
Chattanooga Wb City	United States	Record low minimum temperature	-13.9 C (7.0 F)	24 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low minimum temperature	-20.6 C (-5.1 F)	22 of 100 (Routine)
Port Douglas - Warner St	Australia	Record daily precipitation	114.6 mm (4.5 in)	21 of 100 (Routine)
Brewarrina (Talawanta)	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Tapio	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Goondiwindi Post Office	Australia	Record daily precipitation	26.7 mm (1.1 in)	20 of 100 (Routine)
Wilcannia (Culpaulin)	Australia	Record daily precipitation	6.1 mm (0.24 in)	20 of 100 (Routine)
Broken Hill (Glen Lyon)	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Glenfield (Macquarie)	Australia	Record daily precipitation	27.9 mm (1.1 in)	20 of 100 (Routine)
Swan Hill (Murray Downs)	Australia	Record daily precipitation	5.8 mm (0.23 in)	20 of 100 (Routine)
Port Dover	Canada	Record low maximum temperature	-13.3 C (8.1 F)	20 of 100 (Routine)
Welland	Canada	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
La Crosse Wb City	United States	Record low maximum temperature	-18.3 C (-0.9 F)	20 of 100 (Routine)
Quebec	Canada	Record daily precipitation	25.4 mm (1.0 in)	19 of 100 (Routine)
Morgantown 1	United States	Record low minimum temperature	-20.6 C (-5.1 F)	19 of 100 (Routine)
Kongal	Australia	Record daily precipitation	7.1 mm (0.28 in)	18 of 100 (Routine)
Burketown Post Office	Australia	Record daily precipitation	41.9 mm (1.6 in)	18 of 100 (Routine)
Cairns Post Office	Australia	Record daily precipitation	83.8 mm (3.3 in)	18 of 100 (Routine)
Gunnedah Pool	Australia	Record high minimum temperature	23.3 C (73.9 F)	18 of 100 (Routine)
Kingston Queens U	Canada	Record daily snowfall	10.7 cm (4.2 in)	18 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	-15.0 C (5.0 F)	18 of 100 (Routine)
Dubuque River	United States	Record low maximum temperature	-18.3 C (-0.9 F)	18 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low minimum temperature	-22.8 C (-9.0 F)	18 of 100 (Routine)
Bungonia (Inverary Park)	Australia	Record daily precipitation	21.3 mm (0.8 in)	17 of 100 (Routine)
Port Arthur	Canada	Record low maximum temperature	-17.8 C (0.0 F)	17 of 100 (Routine)
Toledo Blade	United States	Record low minimum temperature	-20.6 C (-5.1 F)	17 of 100 (Routine)
Madison Wb City	United States	Record low maximum temperature	-18.9 C (-2.0 F)	17 of 100 (Routine)
Cardwell Marine Pde	Australia	Record daily precipitation	84.3 mm (3.3 in)	16 of 100 (Routine)
Goodooga (Brenda)	Australia	Record daily precipitation	22.4 mm (0.9 in)	16 of 100 (Routine)
Tyntynder Station	Australia	Record daily precipitation	14.5 mm (0.6 in)	16 of 100 (Routine)
Stoney Creek	Canada	Record daily snowfall	10.2 cm (4.0 in)	16 of 100 (Routine)
Weldon	United States	Record daily precipitation	16.0 mm (0.6 in)	16 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low maximum temperature	-12.2 C (10.0 F)	16 of 100 (Routine)
Barellan Post Office	Australia	Record daily precipitation	8.1 mm (0.32 in)	15 of 100 (Routine)
Swift Current	Canada	Record low minimum temperature	-33.3 C (-27.9 F)	15 of 100 (Routine)
Yallook	Australia	Record daily precipitation	4.8 mm (0.19 in)	14 of 100 (Routine)
Stratford	Canada	Record low maximum temperature	-11.1 C (12.0 F)	14 of 100 (Routine)
Simferopol	Ukraine	Record daily precipitation	19.8 mm (0.8 in)	14 of 100 (Routine)
Portland	United States	Record daily snowfall	5.1 cm (2.0 in)	14 of 100 (Routine)
State College	United States	Record low minimum temperature	-18.3 C (-0.9 F)	14 of 100 (Routine)
Campbelltown 1	Australia	Record daily precipitation	10.9 mm (0.4 in)	13 of 100 (Routine)
Edmonton	Canada	Record low minimum temperature	-31.7 C (-25.1 F)	13 of 100 (Routine)
Guelph Oac	Canada	Record daily snowfall	7.6 cm (3.0 in)	13 of 100 (Routine)
Montgomery Wb City	United States	Record low maximum temperature	2.8 C (37.0 F)	13 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	7.2 C (45.0 F)	13 of 100 (Routine)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	35.1 mm (1.4 in)	12 of 100 (Routine)
Edmonton	Canada	Record low maximum temperature	-24.4 C (-11.9 F)	12 of 100 (Routine)
Middletown 4 W	United States	Record daily precipitation	22.1 mm (0.9 in)	12 of 100 (Routine)

Counts by Type and Timescale

106 records

Records set or tied on 9 December 1917 by type: Lowest daily maximum 22, Highest daily minimum 2, Lowest daily minimum 24, Heaviest daily rainfall 44, Heaviest daily snowfall 14.

Records on 9 December 1917 by type
Record type	Records
Highest daily maximum	0
Lowest daily maximum	22
Highest daily minimum	2
Lowest daily minimum	24
Heaviest daily rainfall	44
Heaviest daily snowfall	14
Deepest snow cover	0

Records on 9 December 1917 by timescale: all-time 0, monthly 2, daily 104.

How Much Records Were Beaten By

99 broken records

Margins by which the 99 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

9 December 1917

Top 20 records on 9 December 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 December 1917	Parry Sound, CA	daily snowfall	45.7 cm (18.0 in)	20.3 cm (8.0 in)	34 years	48 of 100 (Notable)
9 December 1917	Parry Sound, CA	daily rain	45.7 mm (1.8 in)	20.3 mm (0.8 in)	34 years	45 of 100 (Notable)
9 December 1917	Buffalo, US	daily snowfall	25.4 cm (10.0 in)	16.8 cm (6.6 in)	14 years	42 of 100 (Notable)
9 December 1917	Glen Innes Post Office, AU	daily rain	45.7 mm (1.8 in)	35.3 mm (1.4 in)	19 years	37 of 100 (Notable)
9 December 1917	Quebec, CA	daily snowfall	25.4 cm (10.0 in)	12.7 cm (5.0 in)	40 years	37 of 100 (Notable)
9 December 1917	Normanton Post Office, AU	daily rain	105.4 mm (4.1 in)	72.6 mm (2.9 in)	10 years	34 of 100 (Routine)
9 December 1917	Port Dover, CA	daily snowfall	18.5 cm (7.3 in)	9.6 cm (3.8 in)	3 years	29 of 100 (Routine)
9 December 1917	Stratford, CA	daily snowfall	20.3 cm (8.0 in)	5.1 cm (2.0 in)	38 years	26 of 100 (Routine)
9 December 1917	Hamilton, CA	daily low max	-12.8 C (9.0 F)	5.0 C (9.0 F)	40 years	26 of 100 (Routine)
9 December 1917	Montgomery Wb City, US	daily low min	-9.4 C (15.1 F)	6.6 C (11.9 F)	34 years	25 of 100 (Routine)
9 December 1917	Little Rock St Capitol, US	monthly low min	-15.0 C (5.0 F)	0.6 C (1.1 F)	36 years	25 of 100 (Routine)
9 December 1917	Welland, CA	daily snowfall	22.9 cm (9.0 in)	12.7 cm (5.0 in)	14 years	24 of 100 (Routine)
9 December 1917	Chattanooga Wb City, US	daily low min	-13.9 C (7.0 F)	5.6 C (10.1 F)	36 years	24 of 100 (Routine)
9 December 1917	Cleveland 2717 Euclid, US	daily low min	-20.6 C (-5.1 F)	5.0 C (9.0 F)	34 years	22 of 100 (Routine)
9 December 1917	Port Douglas - Warner St, AU	daily rain	114.6 mm (4.5 in)	35.1 mm (1.4 in)	29 years	21 of 100 (Routine)
9 December 1917	Brewarrina (Talawanta), AU	daily rain	22.1 mm (0.9 in)	22.1 mm (0.9 in)	34 years	20 of 100 (Routine)
9 December 1917	Tapio, AU	daily rain	6.4 mm (0.25 in)	6.4 mm (0.25 in)	45 years	20 of 100 (Routine)
9 December 1917	Goondiwindi Post Office, AU	daily rain	26.7 mm (1.1 in)	11.5 mm (0.5 in)	27 years	20 of 100 (Routine)
9 December 1917	Wilcannia (Culpaulin), AU	daily rain	6.1 mm (0.24 in)	6.1 mm (0.24 in)	29 years	20 of 100 (Routine)
9 December 1917	Broken Hill (Glen Lyon), AU	daily rain	8.9 mm (0.35 in)	8.9 mm (0.35 in)	33 years	20 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

1796 to 1917

Records set or tied on this calendar date in each year from 1796 to 1917. 1917 had 106 records.

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

Records on 12-09 in each year
Year	Records
1796	1
1820	1
1825	3
1831	1
1844	1
1856	1
1860	1
1862	1
1867	2
1868	1
1869	1
1871	3
1872	1
1873	2
1876	2
1878	4
1879	9
1880	1
1882	3
1883	1
1885	2
1886	2
1887	1
1889	1
1891	3
1893	1
1894	1
1895	3
1896	1
1897	4
1898	3
1899	5
1900	1
1901	4
1902	18
1903	7
1904	2
1905	9
1906	15
1907	28
1908	5
1909	18
1910	36
1911	31
1912	18
1913	37
1914	57
1915	139
1916	366
1917	106
1918	40
1919	58
1920	221
1921	58
1922	311
1923	203
1924	164
1925	93
1926	113
1927	356
1928	110
1929	192
1930	211
1931	434
1932	339
1933	250
1934	364
1935	263
1936	143
1937	348
1938	329
1939	1,030
1940	251
1941	144
1942	370
1943	496
1944	327
1945	178
1946	1,308
1947	303
1948	278
1949	299
1950	382
1951	849
1952	553
1953	347
1954	226
1955	352
1956	672
1957	565
1958	678
1959	217
1960	426
1961	818
1962	377
1963	642
1964	547
1965	706
1966	968
1967	639
1968	482
1969	347
1970	987
1971	655
1972	1,776
1973	679
1974	629
1975	668
1976	868
1977	1,548
1978	2,060
1979	693
1980	760
1981	748
1982	589
1983	664
1984	588
1985	1,074
1986	658
1987	1,007
1988	939
1989	1,270
1990	844
1991	878
1992	791
1993	912
1994	1,071
1995	1,247
1996	946
1997	1,214
1998	769
1999	774
2000	920
2001	505
2002	1,052
2003	824
2004	1,108
2005	1,714
2006	1,718
2007	1,124
2008	1,052
2009	2,442
2010	1,726
2011	496
2012	753
2013	1,018
2014	510
2015	1,054
2016	679
2017	715
2018	626
2019	614
2020	571
2021	674
2022	666
2023	907
2024	422
2025	1,602

Download the Data

Data for records on 1917-12-09: 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 50	91
50 to 100	4
100 to 150	2
150 to 200	1
200 to 250	1