Weather Records on 27 December 1917

67 weather records were set or tied worldwide on 27 December 1917. Highest significance: Medicine Hat A, CA.

Key Facts for 27 December 1917

On 27 December 1917, 67 weather records were set or tied at long-record stations worldwide.
8 were record highs and 33 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 59 daily.
Medicine Hat A set a daily record snowfall of 12.7 cm (5.0 in) on 27 December 1917.
Across 150 earlier years (1793 to 2025) the same calendar date averaged 542 records.

Record Map

67 stations

67 station records on 27 December 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 December 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Medicine Hat A	Canada	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Portland Rfc City	United States	Record high minimum temperature	13.3 C (55.9 F)	30 of 100 (Routine)
Tempe Downs	Australia	Record daily precipitation	35.8 mm (1.4 in)	26 of 100 (Routine)
Yarmouth	Canada	Record low maximum temperature	-11.7 C (10.9 F)	23 of 100 (Routine)
Saentis	Switzerland	Record low minimum temperature	-25.2 C (-13.4 F)	23 of 100 (Routine)
Medicine Hat A	Canada	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Turkestan	Kazakhstan	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Cataract River	Australia	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Fort National	Algeria	Record low minimum temperature	-5.0 C (23.0 F)	20 of 100 (Routine)
St Albans	Canada	Record low maximum temperature	-31.1 C (-24.0 F)	20 of 100 (Routine)
Qu'appelle	Canada	Record low maximum temperature	-28.9 C (-20.0 F)	19 of 100 (Routine)
Halifax	Canada	Record low maximum temperature	-11.1 C (12.0 F)	19 of 100 (Routine)
Calgary Int'l A	Canada	Record low maximum temperature	-28.9 C (-20.0 F)	18 of 100 (Routine)
Minnedosa	Canada	Record low minimum temperature	-37.2 C (-35.0 F)	18 of 100 (Routine)
Freiburg	Germany	Record snow depth	11.0 cm (4.3 in)	18 of 100 (Routine)
Gogland	Russia	Record daily precipitation	4.6 mm (0.18 in)	18 of 100 (Routine)
Sacramento 5 ESE	United States	Record high maximum temperature	20.0 C (68.0 F)	18 of 100 (Routine)
Coronga Peak	Australia	Record daily precipitation	4.6 mm (0.18 in)	17 of 100 (Routine)
Gorki	Belarus	Record daily precipitation	12.0 mm (0.5 in)	17 of 100 (Routine)
Edmonton	Canada	Record low minimum temperature	-41.1 C (-42.0 F)	17 of 100 (Routine)
Yarmouth	Canada	Record low minimum temperature	-16.1 C (3.0 F)	17 of 100 (Routine)
Chatham	Canada	Record low maximum temperature	-16.7 C (1.9 F)	16 of 100 (Routine)
Philadelphia City	United States	Record low maximum temperature	-2.8 C (27.0 F)	16 of 100 (Routine)
Wingen (Murrulla)	Australia	Record daily precipitation	26.7 mm (1.1 in)	15 of 100 (Routine)
Ellerston	Australia	Record daily precipitation	19.6 mm (0.8 in)	15 of 100 (Routine)
Swift Current	Canada	Record low minimum temperature	-30.6 C (-23.1 F)	15 of 100 (Routine)
Anticosti SW Point	Canada	Record low maximum temperature	-15.0 C (5.0 F)	15 of 100 (Routine)
Anticosti SW Point	Canada	Record low minimum temperature	-20.0 C (-4.0 F)	15 of 100 (Routine)
Winnemucca AP	United States	Record high minimum temperature	3.3 C (37.9 F)	15 of 100 (Routine)
Warren (Eenaweena)	Australia	Record daily precipitation	5.6 mm (0.22 in)	14 of 100 (Routine)
Ellerslie 2	Australia	Record daily precipitation	7.9 mm (0.31 in)	14 of 100 (Routine)
Dartmouth	Australia	Record daily precipitation	10.9 mm (0.4 in)	14 of 100 (Routine)
Stony Mountain	Canada	Record low maximum temperature	-27.8 C (-18.0 F)	14 of 100 (Routine)
Stony Mountain	Canada	Record low minimum temperature	-37.2 C (-35.0 F)	14 of 100 (Routine)
Winnemucca AP	United States	Record high maximum temperature	14.4 C (57.9 F)	14 of 100 (Routine)
Prince Albert	Canada	Record low maximum temperature	-31.7 C (-25.1 F)	13 of 100 (Routine)
Beeac (Eurack)	Australia	Record daily precipitation	14.7 mm (0.6 in)	12 of 100 (Routine)
Portland Rfc City	United States	Record high maximum temperature	16.1 C (61.0 F)	12 of 100 (Routine)
Nowra Council Offices	Australia	Record daily precipitation	5.1 mm (0.20 in)	11 of 100 (Routine)
Zagreb-Gric	Croatia	Record daily precipitation	13.9 mm (0.5 in)	11 of 100 (Routine)
Portland	United States	Record low maximum temperature	-13.9 C (7.0 F)	11 of 100 (Routine)
Coonamble (Wingadee)	Australia	Record daily precipitation	18.5 mm (0.7 in)	10 of 100 (Routine)
Pointe Au Pere	Canada	Record low maximum temperature	-19.4 C (-2.9 F)	10 of 100 (Routine)
Olympia Priest Pt Park	United States	Record high maximum temperature	13.9 C (57.0 F)	10 of 100 (Routine)
Swift Current	Canada	Record low maximum temperature	-27.8 C (-18.0 F)	9 of 100 (Routine)
Blue Hill Coop	United States	Record low maximum temperature	-10.0 C (14.0 F)	8 of 100 (Routine)
Victoria River Downs	Australia	Record daily precipitation	17.3 mm (0.7 in)	7 of 100 (Routine)
Sussex	Australia	Record daily precipitation	2.0 mm (0.08 in)	7 of 100 (Routine)
Altastenberg	Germany	Record low maximum temperature	-8.3 C (17.1 F)	7 of 100 (Routine)
Burlington	United States	Record low maximum temperature	-11.1 C (12.0 F)	7 of 100 (Routine)
Goonal	Australia	Record daily precipitation	6.9 mm (0.27 in)	6 of 100 (Routine)
Edmonton	Canada	Record low maximum temperature	-30.0 C (-22.0 F)	6 of 100 (Routine)
Nemours (Ghazaouet)	Algeria	Record low maximum temperature	10.0 C (50.0 F)	5 of 100 (Routine)
Collarenebri (Albert St)	Australia	Record daily precipitation	0.8 mm (0.03 in)	5 of 100 (Routine)
Bad Muskau	Germany	Record snow depth	13.0 cm (5.1 in)	5 of 100 (Routine)
Ottawa	Canada	Record low maximum temperature	-18.3 C (-0.9 F)	4 of 100 (Routine)
Peterborough	Canada	Record daily snowfall	10.2 cm (4.0 in)	4 of 100 (Routine)
Tbilisi	Georgia	Record daily precipitation	4.0 mm (0.16 in)	4 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record low minimum temperature	2.0 C (35.6 F)	3 of 100 (Routine)
Derra	Australia	Record daily precipitation	5.3 mm (0.21 in)	3 of 100 (Routine)

Counts by Type and Timescale

67 records

Records set or tied on 27 December 1917 by type: Highest daily maximum 5, Lowest daily maximum 22, Highest daily minimum 3, Lowest daily minimum 11, Heaviest daily rainfall 22, Heaviest daily snowfall 2, Deepest snow cover 2.

Records on 27 December 1917 by type
Record type	Records
Highest daily maximum	5
Lowest daily maximum	22
Highest daily minimum	3
Lowest daily minimum	11
Heaviest daily rainfall	22
Heaviest daily snowfall	2
Deepest snow cover	2

Records on 27 December 1917 by timescale: all-time 1, monthly 7, daily 59.

How Much Records Were Beaten By

55 broken records

Margins by which the 55 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

27 December 1917

Top 20 records on 27 December 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 December 1917	Medicine Hat A, CA	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	27 years	37 of 100 (Notable)
27 December 1917	Portland Rfc City, US	monthly high min	13.3 C (55.9 F)	1.6 C (2.9 F)	42 years	30 of 100 (Routine)
27 December 1917	Tempe Downs, AU	daily rain	35.8 mm (1.4 in)	17.5 mm (0.7 in)	23 years	26 of 100 (Routine)
27 December 1917	Yarmouth, CA	daily low max	-11.7 C (10.9 F)	3.9 C (7.0 F)	37 years	23 of 100 (Routine)
27 December 1917	Saentis, CH	monthly low min	-25.2 C (-13.4 F)	1.0 C (1.8 F)	29 years	23 of 100 (Routine)
27 December 1917	Medicine Hat A, CA	daily rain	12.7 mm (0.5 in)	7.6 mm (0.30 in)	27 years	20 of 100 (Routine)
27 December 1917	Turkestan, KZ	monthly rain	24.1 mm (0.9 in)	5.1 mm (0.20 in)	12 years	20 of 100 (Routine)
27 December 1917	Cataract River, AU	daily rain	21.3 mm (0.8 in)	12.4 mm (0.5 in)	29 years	20 of 100 (Routine)
27 December 1917	Fort National, DZ	monthly low min	-5.0 C (23.0 F)	1.0 C (1.8 F)	16 years	20 of 100 (Routine)
27 December 1917	St Albans, CA	monthly low max	-31.1 C (-24.0 F)	0.5 C (0.9 F)	25 years	20 of 100 (Routine)
27 December 1917	Qu'appelle, CA	daily low max	-28.9 C (-20.0 F)	5.6 C (10.1 F)	32 years	19 of 100 (Routine)
27 December 1917	Halifax, CA	daily low max	-11.1 C (12.0 F)	2.2 C (4.0 F)	37 years	19 of 100 (Routine)
27 December 1917	Calgary Int'l A, CA	daily low max	-28.9 C (-20.0 F)	6.7 C (12.1 F)	29 years	18 of 100 (Routine)
27 December 1917	Minnedosa, CA	daily low min	-37.2 C (-35.0 F)	4.4 C (7.9 F)	33 years	18 of 100 (Routine)
27 December 1917	Freiburg, DE	daily snow depth	11.0 cm (4.3 in)	5.0 cm (2.0 in)	11 years	18 of 100 (Routine)
27 December 1917	Gogland, RU	daily rain	4.6 mm (0.18 in)	1.6 mm (0.06 in)	32 years	18 of 100 (Routine)
27 December 1917	Sacramento 5 ESE, US	daily high max	20.0 C (68.0 F)	2.8 C (5.0 F)	20 years	18 of 100 (Routine)
27 December 1917	Coronga Peak, AU	daily rain	4.6 mm (0.18 in)	4.6 mm (0.18 in)	34 years	17 of 100 (Routine)
27 December 1917	Gorki, BY	daily rain	12.0 mm (0.5 in)	3.0 mm (0.12 in)	16 years	17 of 100 (Routine)
27 December 1917	Edmonton, CA	daily low min	-41.1 C (-42.0 F)	3.3 C (5.9 F)	36 years	17 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 67 records.

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

Records on 12-27 in each year
Year	Records
1793	2
1798	2
1810	1
1839	2
1845	1
1849	1
1860	2
1862	1
1868	1
1869	1
1872	3
1875	1
1876	2
1881	1
1882	2
1886	1
1889	3
1890	1
1891	2
1892	4
1894	6
1896	5
1897	6
1898	5
1899	3
1900	4
1901	4
1902	6
1903	12
1904	21
1905	9
1906	8
1907	38
1908	3
1909	25
1910	13
1911	12
1912	51
1913	24
1914	44
1915	42
1916	43
1917	67
1918	42
1919	188
1920	148
1921	336
1922	37
1923	292
1924	340
1925	509
1926	208
1927	175
1928	282
1929	394
1930	142
1931	314
1932	219
1933	474
1934	199
1935	706
1936	972
1937	241
1938	396
1939	429
1940	526
1941	204
1942	880
1943	246
1944	274
1945	406
1946	878
1947	356
1948	445
1949	730
1950	481
1951	266
1952	118
1953	241
1954	511
1955	533
1956	628
1957	316
1958	425
1959	1,114
1960	385
1961	217
1962	490
1963	243
1964	897
1965	473
1966	715
1967	817
1968	993
1969	778
1970	352
1971	1,207
1972	401
1973	819
1974	782
1975	622
1976	613
1977	815
1978	775
1979	578
1980	1,778
1981	832
1982	1,449
1983	2,382
1984	814
1985	821
1986	484
1987	2,166
1988	1,855
1989	925
1990	880
1991	477
1992	500
1993	1,329
1994	1,122
1995	1,317
1996	1,758
1997	850
1998	924
1999	867
2000	1,392
2001	642
2002	944
2003	1,242
2004	853
2005	913
2006	965
2007	838
2008	1,708
2009	1,005
2010	1,851
2011	1,094
2012	1,118
2013	506
2014	482
2015	2,877
2016	884
2017	1,415
2018	1,039
2019	558
2020	402
2021	1,532
2022	1,025
2023	750
2024	680
2025	1,100

Download the Data

Data for records on 1917-12-27: 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 10	51
10 to 20	2
20 to 30	0
30 to 40	0
40 to 50	0
50 to 60	1
60 to 70	0
70 to 80	1