Weather Records on 18 December 1939

900 weather records were set or tied worldwide on 18 December 1939. Highest significance: Chemnitz, DE.

Key Facts for 18 December 1939

On 18 December 1939, 900 weather records were set or tied at long-record stations worldwide.
836 were record highs and 9 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 20 monthly and 880 daily.
Chemnitz set a daily record snow depth of 22.0 cm (8.7 in) on 18 December 1939.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 477 records.

Record Map

900 stations

900 station records on 18 December 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chemnitz	Germany	Record snow depth	22.0 cm (8.7 in)	50 of 100 (Notable)
Bundaberg Post Office	Australia	Record daily precipitation	107.2 mm (4.2 in)	40 of 100 (Notable)
Millaquin Sugar	Australia	Record daily precipitation	101.6 mm (4.0 in)	35 of 100 (Notable)
Sedan	United States	Record high maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Gravette	United States	Record high maximum temperature	22.2 C (72.0 F)	27 of 100 (Routine)
Colby	United States	Record high minimum temperature	5.0 C (41.0 F)	27 of 100 (Routine)
Albion	United States	Record high minimum temperature	8.3 C (46.9 F)	27 of 100 (Routine)
Gothenburg	United States	Record high minimum temperature	4.4 C (39.9 F)	27 of 100 (Routine)
Las Vegas 2 NW	United States	Record high maximum temperature	23.3 C (73.9 F)	27 of 100 (Routine)
Tabulam Post Office	Australia	Record daily precipitation	59.7 mm (2.4 in)	26 of 100 (Routine)
Bronkhorstspruit (Mun)	South Africa	Record daily precipitation	47.5 mm (1.9 in)	26 of 100 (Routine)
Independence	United States	Record high maximum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Oregon	United States	Record high minimum temperature	7.2 C (45.0 F)	26 of 100 (Routine)
Alva 1W	United States	Record high maximum temperature	23.3 C (73.9 F)	26 of 100 (Routine)
Oakland	United States	Record high maximum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
Harrisonville	United States	Record high maximum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Genoa 2 W	United States	Record high minimum temperature	4.4 C (39.9 F)	25 of 100 (Routine)
Ravenna	United States	Record high minimum temperature	3.3 C (37.9 F)	25 of 100 (Routine)
Muskegon Co AP	United States	Record high minimum temperature	6.1 C (43.0 F)	25 of 100 (Routine)
Ebor (Kotupna)	Australia	Record daily precipitation	32.8 mm (1.3 in)	24 of 100 (Routine)
Ottawa	United States	Record high minimum temperature	6.1 C (43.0 F)	24 of 100 (Routine)
Appleton City	United States	Record high maximum temperature	21.7 C (71.1 F)	24 of 100 (Routine)
Vinita 2 N	United States	Record high maximum temperature	21.7 C (71.1 F)	24 of 100 (Routine)
Springfield	United States	Record high maximum temperature	21.1 C (70.0 F)	24 of 100 (Routine)
Wilgerivier (Sar)	South Africa	Record daily precipitation	42.2 mm (1.7 in)	23 of 100 (Routine)
Ft Collins	United States	Record high minimum temperature	2.8 C (37.0 F)	23 of 100 (Routine)
Grayling	United States	Record high maximum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Pipestone	United States	Record high minimum temperature	1.7 C (35.1 F)	23 of 100 (Routine)
Nevada Wtp	United States	Record high maximum temperature	21.7 C (71.1 F)	23 of 100 (Routine)
Stanton	United States	Record high minimum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
Montpelier	United States	Record high maximum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Biggenden Post Office	Australia	Record daily precipitation	42.7 mm (1.7 in)	22 of 100 (Routine)
Miva	Australia	Record daily precipitation	71.1 mm (2.8 in)	22 of 100 (Routine)
St Albans	Canada	Record high minimum temperature	-5.0 C (23.0 F)	22 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record high minimum temperature	1.7 C (35.1 F)	22 of 100 (Routine)
Wray	United States	Record high minimum temperature	2.8 C (37.0 F)	22 of 100 (Routine)
Sparta 1 W	United States	Record high maximum temperature	18.9 C (66.0 F)	22 of 100 (Routine)
Sibley	United States	Record high minimum temperature	1.1 C (34.0 F)	22 of 100 (Routine)
Leavenworth	United States	Record high maximum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high maximum temperature	16.7 C (62.1 F)	22 of 100 (Routine)
Waxahachie	United States	Record high minimum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Green Rvr	United States	Record high maximum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Murphys Creek Post Office	Australia	Record daily precipitation	43.2 mm (1.7 in)	21 of 100 (Routine)
Pelee Island	Canada	Record high maximum temperature	12.2 C (54.0 F)	21 of 100 (Routine)
Ridgetown	Canada	Record high maximum temperature	11.7 C (53.1 F)	21 of 100 (Routine)
Oracle	United States	Record high maximum temperature	22.2 C (72.0 F)	21 of 100 (Routine)
Burlington	United States	Record high maximum temperature	17.8 C (64.0 F)	21 of 100 (Routine)
Columbus	United States	Record high maximum temperature	21.1 C (70.0 F)	21 of 100 (Routine)
Council Grove	United States	Record high maximum temperature	17.2 C (63.0 F)	21 of 100 (Routine)
Kalamazoo State Hospital	United States	Record high maximum temperature	13.3 C (55.9 F)	21 of 100 (Routine)
St Joseph	United States	Record high minimum temperature	4.4 C (39.9 F)	21 of 100 (Routine)
Mexico	United States	Record high minimum temperature	5.6 C (42.1 F)	21 of 100 (Routine)
Neosho	United States	Record high maximum temperature	21.7 C (71.1 F)	21 of 100 (Routine)
Fairmont	United States	Record high maximum temperature	21.1 C (70.0 F)	21 of 100 (Routine)
Los Lunas	United States	Record high maximum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	13.3 C (55.9 F)	21 of 100 (Routine)
Weatherford	United States	Record high maximum temperature	23.9 C (75.0 F)	21 of 100 (Routine)
Bajramaly	Turkmenistan	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Ada	United States	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Chardzhev	Turkmenistan	Record daily precipitation	12.5 mm (0.5 in)	20 of 100 (Routine)

Counts by Type and Timescale

900 records

Records set or tied on 18 December 1939 by type: Highest daily maximum 409, Lowest daily maximum 4, Highest daily minimum 427, Lowest daily minimum 5, Heaviest daily rainfall 51, Heaviest daily snowfall 1, Deepest snow cover 3.

Records on 18 December 1939 by type
Record type	Records
Highest daily maximum	409
Lowest daily maximum	4
Highest daily minimum	427
Lowest daily minimum	5
Heaviest daily rainfall	51
Heaviest daily snowfall	1
Deepest snow cover	3

Records on 18 December 1939 by timescale: all-time 0, monthly 20, daily 880.

How Much Records Were Beaten By

734 broken records

Margins by which the 734 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 160.0. Ties are not counted.

Top 20 by Significance

18 December 1939

Top 20 records on 18 December 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1939	Chemnitz, DE	daily snow depth	22.0 cm (8.7 in)	16.0 cm (6.3 in)	36 years	50 of 100 (Notable)
18 December 1939	Bundaberg Post Office, AU	daily rain	107.2 mm (4.2 in)	58.9 mm (2.3 in)	34 years	40 of 100 (Notable)
18 December 1939	Millaquin Sugar, AU	daily rain	101.6 mm (4.0 in)	73.2 mm (2.9 in)	12 years	35 of 100 (Notable)
18 December 1939	Sedan, US	daily high max	25.0 C (77.0 F)	9.4 C (16.9 F)	45 years	31 of 100 (Routine)
18 December 1939	Gravette, US	daily high max	22.2 C (72.0 F)	7.8 C (14.0 F)	39 years	27 of 100 (Routine)
18 December 1939	Colby, US	daily high min	5.0 C (41.0 F)	6.1 C (11.0 F)	45 years	27 of 100 (Routine)
18 December 1939	Albion, US	daily high min	8.3 C (46.9 F)	8.9 C (16.0 F)	38 years	27 of 100 (Routine)
18 December 1939	Gothenburg, US	daily high min	4.4 C (39.9 F)	6.6 C (11.9 F)	43 years	27 of 100 (Routine)
18 December 1939	Las Vegas 2 NW, US	daily high max	23.3 C (73.9 F)	7.2 C (13.0 F)	37 years	27 of 100 (Routine)
18 December 1939	Tabulam Post Office, AU	daily rain	59.7 mm (2.4 in)	24.1 mm (0.9 in)	16 years	26 of 100 (Routine)
18 December 1939	Bronkhorstspruit (Mun), ZA	daily rain	47.5 mm (1.9 in)	19.1 mm (0.8 in)	24 years	26 of 100 (Routine)
18 December 1939	Independence, US	daily high max	21.7 C (71.1 F)	6.1 C (11.0 F)	45 years	26 of 100 (Routine)
18 December 1939	Oregon, US	daily high min	7.2 C (45.0 F)	6.6 C (11.9 F)	44 years	26 of 100 (Routine)
18 December 1939	Alva 1W, US	daily high max	23.3 C (73.9 F)	6.6 C (11.9 F)	44 years	26 of 100 (Routine)
18 December 1939	Oakland, US	daily high max	18.3 C (64.9 F)	2.7 C (4.9 F)	37 years	25 of 100 (Routine)
18 December 1939	Harrisonville, US	daily high max	20.0 C (68.0 F)	7.2 C (13.0 F)	38 years	25 of 100 (Routine)
18 December 1939	Genoa 2 W, US	daily high min	4.4 C (39.9 F)	5.5 C (9.9 F)	45 years	25 of 100 (Routine)
18 December 1939	Ravenna, US	daily high min	3.3 C (37.9 F)	5.5 C (9.9 F)	43 years	25 of 100 (Routine)
18 December 1939	Muskegon Co AP, US	daily high min	6.1 C (43.0 F)	5.5 C (9.9 F)	33 years	25 of 100 (Routine)
18 December 1939	Ebor (Kotupna), AU	daily rain	32.8 mm (1.3 in)	8.4 mm (0.33 in)	43 years	24 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 1939

Records set or tied on this calendar date in each year from 1793 to 1939. 1939 had 900 records.

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

Records on 12-18 in each year
Year	Records
1793	1
1796	1
1805	1
1814	1
1825	1
1846	1
1849	1
1852	2
1858	1
1859	4
1862	2
1864	1
1868	1
1873	1
1875	1
1876	2
1878	1
1881	2
1882	1
1884	2
1886	1
1887	1
1888	1
1889	4
1890	5
1892	4
1894	8
1895	1
1897	4
1898	9
1899	3
1900	2
1901	6
1902	33
1903	11
1904	25
1905	3
1906	21
1907	15
1908	16
1909	18
1910	19
1911	9
1912	33
1913	38
1914	20
1915	28
1916	57
1917	62
1918	21
1919	117
1920	77
1921	123
1922	108
1923	378
1924	480
1925	74
1926	173
1927	151
1928	165
1929	366
1930	230
1931	360
1932	353
1933	506
1934	209
1935	138
1936	466
1937	459
1938	185
1939	900
1940	242
1941	213
1942	281
1943	419
1944	191
1945	598
1946	199
1947	266
1948	354
1949	561
1950	289
1951	867
1952	450
1953	373
1954	507
1955	611
1956	333
1957	901
1958	524
1959	477
1960	477
1961	885
1962	759
1963	571
1964	840
1965	402
1966	644
1967	1,105
1968	488
1969	376
1970	502
1971	387
1972	375
1973	1,008
1974	229
1975	625
1976	459
1977	992
1978	946
1979	1,087
1980	772
1981	1,362
1982	537
1983	2,014
1984	1,439
1985	1,384
1986	875
1987	1,505
1988	1,061
1989	1,818
1990	1,367
1991	756
1992	1,045
1993	697
1994	643
1995	1,065
1996	1,833
1997	1,195
1998	863
1999	923
2000	1,572
2001	906
2002	1,437
2003	987
2004	506
2005	987
2006	1,167
2007	746
2008	1,014
2009	1,253
2010	1,322
2011	697
2012	729
2013	513
2014	556
2015	1,254
2016	1,821
2017	516
2018	464
2019	679
2020	326
2021	762
2022	536
2023	1,293
2024	780
2025	994

Download the Data

Data for records on 1939-12-18: 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 20	724
20 to 40	6
40 to 60	2
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1