Weather Records on 7 December 1939

780 weather records were set or tied worldwide on 7 December 1939. Highest significance: Chemnitz, DE.

Key Facts for 7 December 1939

On 7 December 1939, 780 weather records were set or tied at long-record stations worldwide.
727 were record highs and 11 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 46 monthly and 734 daily.
Chemnitz set a monthly record snow depth of 30.0 cm (11.8 in) on 7 December 1939.
Across 157 earlier years (1801 to 2025) the same calendar date averaged 492 records.

Record Map

780 stations

780 station records on 7 December 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 7 December 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chemnitz	Germany	Record snow depth	30.0 cm (11.8 in)	39 of 100 (Notable)
Glenelg	Australia	Record daily precipitation	83.8 mm (3.3 in)	36 of 100 (Notable)
Athens	United States	Record high maximum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record high maximum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record low minimum temperature	6.7 C (44.1 F)	33 of 100 (Routine)
Plauen	Germany	Record snow depth	15.0 cm (5.9 in)	29 of 100 (Routine)
Campbell	United States	Record high maximum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Centennial 1NE	United States	Record high maximum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
N Loup	United States	Record high maximum temperature	27.2 C (81.0 F)	27 of 100 (Routine)
Nanaimo	Canada	Record daily precipitation	42.4 mm (1.7 in)	26 of 100 (Routine)
Vancouver Pmo	Canada	Record daily precipitation	45.5 mm (1.8 in)	26 of 100 (Routine)
Revelstoke	Canada	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Condamine Plains	Australia	Record daily precipitation	45.7 mm (1.8 in)	25 of 100 (Routine)
Ft Bidwell	United States	Record high maximum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Ashton 1N	United States	Record high maximum temperature	12.8 C (55.0 F)	25 of 100 (Routine)
Bridgeport	United States	Record high maximum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Mena	United States	Record high maximum temperature	26.7 C (80.1 F)	24 of 100 (Routine)
New Ulm 2 SE	United States	Record high maximum temperature	20.6 C (69.1 F)	24 of 100 (Routine)
Langdon Exp Farm	United States	Record high maximum temperature	15.0 C (59.0 F)	24 of 100 (Routine)
Bremerton	United States	Record daily precipitation	39.6 mm (1.6 in)	24 of 100 (Routine)
Evanston 1 E	United States	Record high maximum temperature	14.4 C (57.9 F)	24 of 100 (Routine)
Texarkana Webb Fld	United States	Record high maximum temperature	28.9 C (84.0 F)	24 of 100 (Routine)
Corning	United States	Record high maximum temperature	25.6 C (78.1 F)	23 of 100 (Routine)
Ada	United States	Record high maximum temperature	12.2 C (54.0 F)	23 of 100 (Routine)
Bedford 2 SE	United States	Record high maximum temperature	12.8 C (55.0 F)	23 of 100 (Routine)
Border 3 N	United States	Record high maximum temperature	13.9 C (57.0 F)	23 of 100 (Routine)
Forbes (Camp Street)	Australia	Record low minimum temperature	7.2 C (45.0 F)	22 of 100 (Routine)
Alberni Beaver Creek	Canada	Record daily precipitation	52.8 mm (2.1 in)	22 of 100 (Routine)
Buena Vista 2S	United States	Record high maximum temperature	17.8 C (64.0 F)	22 of 100 (Routine)
Manistee 3SE	United States	Record high minimum temperature	3.9 C (39.0 F)	22 of 100 (Routine)
Fairmont	United States	Record high maximum temperature	25.6 C (78.1 F)	22 of 100 (Routine)
Tuscumbia	United States	Record high maximum temperature	25.6 C (78.1 F)	21 of 100 (Routine)
Brainerd	United States	Record high maximum temperature	11.7 C (53.1 F)	21 of 100 (Routine)
Poplar Bluff	United States	Record high maximum temperature	26.1 C (79.0 F)	21 of 100 (Routine)
Adel	United States	Record high maximum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Chama	United States	Record high maximum temperature	15.6 C (60.1 F)	21 of 100 (Routine)
Mott	United States	Record high maximum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Willow City	United States	Record high maximum temperature	11.7 C (53.1 F)	21 of 100 (Routine)
Woodruff	United States	Record high maximum temperature	13.9 C (57.0 F)	21 of 100 (Routine)
Rosalia	United States	Record high maximum temperature	13.9 C (57.0 F)	21 of 100 (Routine)
South Pass City	United States	Record high maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Praha-Klementinum	Czech Republic	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Hohenpeissenberg	Germany	Record daily precipitation	24.7 mm (1.0 in)	20 of 100 (Routine)
Gorlitz	Germany	Record daily precipitation	24.0 mm (0.9 in)	20 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Cottbus	Germany	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Weissenburg	Germany	Record daily precipitation	10.3 mm (0.4 in)	20 of 100 (Routine)
Princetown (Rivernook)	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Republic	United States	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Garsebach Bei Meissen	Germany	Record daily precipitation	20.9 mm (0.8 in)	20 of 100 (Routine)
Salzburg	Austria	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
New Westminster	Canada	Record daily precipitation	38.1 mm (1.5 in)	20 of 100 (Routine)
Stuttgart-Stadt	Germany	Record daily precipitation	14.1 mm (0.6 in)	20 of 100 (Routine)
Bamberg	Germany	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Jerome	United States	Record high minimum temperature	8.9 C (48.0 F)	20 of 100 (Routine)
Holly	United States	Record high minimum temperature	1.7 C (35.1 F)	20 of 100 (Routine)
Lake Moraine	United States	Record high maximum temperature	15.0 C (59.0 F)	20 of 100 (Routine)
Deer Park Sf	United States	Record high maximum temperature	6.7 C (44.1 F)	20 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record high maximum temperature	15.6 C (60.1 F)	20 of 100 (Routine)
Grand Meadow	United States	Record high maximum temperature	13.9 C (57.0 F)	20 of 100 (Routine)

Counts by Type and Timescale

780 records

Records set or tied on 7 December 1939 by type: Highest daily maximum 508, Lowest daily maximum 2, Highest daily minimum 219, Lowest daily minimum 9, Heaviest daily rainfall 39, Deepest snow cover 3.

Records on 7 December 1939 by type
Record type	Records
Highest daily maximum	508
Lowest daily maximum	2
Highest daily minimum	219
Lowest daily minimum	9
Heaviest daily rainfall	39
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 7 December 1939 by timescale: all-time 0, monthly 46, daily 734.

How Much Records Were Beaten By

604 broken records

Margins by which the 604 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 110.0. Ties are not counted.

Top 20 by Significance

7 December 1939

Top 20 records on 7 December 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 December 1939	Chemnitz, DE	monthly snow depth	30.0 cm (11.8 in)	11.0 cm (4.3 in)	3 years	39 of 100 (Notable)
7 December 1939	Glenelg, AU	monthly rain	83.8 mm (3.3 in)	22.8 mm (0.9 in)	4 years	36 of 100 (Notable)
7 December 1939	Athens, US	daily high max	23.3 C (73.9 F)	2.2 C (4.0 F)	81 years	36 of 100 (Notable)
7 December 1939	Morris W Cntrl Rsch & Outreach, US	daily high max	20.0 C (68.0 F)	12.2 C (22.0 F)	44 years	34 of 100 (Routine)
7 December 1939	Cape Otway Lighthouse, AU	daily low min	6.7 C (44.1 F)	1.1 C (2.0 F)	73 years	33 of 100 (Routine)
7 December 1939	Plauen, DE	daily snow depth	15.0 cm (5.9 in)	7.0 cm (2.8 in)	36 years	29 of 100 (Routine)
7 December 1939	Campbell, US	monthly high max	21.1 C (70.0 F)	7.2 C (13.0 F)	23 years	29 of 100 (Routine)
7 December 1939	Centennial 1NE, US	daily high max	14.4 C (57.9 F)	7.2 C (13.0 F)	38 years	29 of 100 (Routine)
7 December 1939	N Loup, US	monthly high max	27.2 C (81.0 F)	2.8 C (5.0 F)	34 years	27 of 100 (Routine)
7 December 1939	Nanaimo, CA	daily rain	42.4 mm (1.7 in)	10.6 mm (0.4 in)	37 years	26 of 100 (Routine)
7 December 1939	Vancouver Pmo, CA	daily rain	45.5 mm (1.8 in)	17.1 mm (0.7 in)	28 years	26 of 100 (Routine)
7 December 1939	Revelstoke, CA	daily rain	30.5 mm (1.2 in)	17.3 mm (0.7 in)	0 years	26 of 100 (Routine)
7 December 1939	Condamine Plains, AU	daily rain	45.7 mm (1.8 in)	24.4 mm (1.0 in)	4 years	25 of 100 (Routine)
7 December 1939	Ft Bidwell, US	daily high max	15.0 C (59.0 F)	0.6 C (1.1 F)	57 years	25 of 100 (Routine)
7 December 1939	Ashton 1N, US	daily high max	12.8 C (55.0 F)	5.6 C (10.1 F)	34 years	25 of 100 (Routine)
7 December 1939	Bridgeport, US	daily high max	22.8 C (73.0 F)	7.2 C (13.0 F)	38 years	25 of 100 (Routine)
7 December 1939	Mena, US	monthly high max	26.7 C (80.1 F)	1.1 C (2.0 F)	33 years	24 of 100 (Routine)
7 December 1939	New Ulm 2 SE, US	monthly high max	20.6 C (69.1 F)	4.5 C (8.1 F)	15 years	24 of 100 (Routine)
7 December 1939	Langdon Exp Farm, US	daily high max	15.0 C (59.0 F)	11.1 C (20.0 F)	20 years	24 of 100 (Routine)
7 December 1939	Bremerton, US	daily rain	39.6 mm (1.6 in)	20.3 mm (0.8 in)	22 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

1801 to 1939

Records set or tied on this calendar date in each year from 1801 to 1939. 1939 had 780 records.

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

Records on 12-07 in each year
Year	Records
1801	1
1805	1
1812	2
1815	1
1825	2
1832	1
1836	1
1839	1
1844	4
1848	3
1852	1
1856	3
1863	1
1866	1
1868	5
1871	5
1875	6
1879	5
1881	1
1884	2
1885	1
1889	1
1890	2
1891	3
1892	1
1893	5
1894	1
1895	1
1896	8
1897	4
1898	10
1899	3
1900	2
1901	9
1902	16
1903	9
1904	7
1905	3
1906	21
1907	4
1908	24
1909	21
1910	26
1911	7
1912	21
1913	19
1914	32
1915	53
1916	36
1917	52
1918	30
1919	38
1920	81
1921	39
1922	272
1923	128
1924	374
1925	119
1926	372
1927	404
1928	105
1929	146
1930	534
1931	180
1932	555
1933	130
1934	274
1935	270
1936	602
1937	890
1938	279
1939	780
1940	145
1941	139
1942	526
1943	199
1944	357
1945	240
1946	855
1947	240
1948	320
1949	187
1950	1,472
1951	1,751
1952	447
1953	673
1954	445
1955	195
1956	1,358
1957	589
1958	831
1959	539
1960	561
1961	206
1962	642
1963	436
1964	467
1965	476
1966	1,047
1967	386
1968	461
1969	952
1970	724
1971	854
1972	2,239
1973	448
1974	508
1975	404
1976	1,037
1977	1,369
1978	1,882
1979	827
1980	1,314
1981	896
1982	542
1983	957
1984	957
1985	922
1986	1,126
1987	866
1988	582
1989	675
1990	744
1991	698
1992	906
1993	544
1994	1,772
1995	912
1996	1,152
1997	818
1998	2,384
1999	674
2000	1,085
2001	743
2002	917
2003	1,184
2004	1,096
2005	1,433
2006	1,246
2007	1,402
2008	833
2009	972
2010	1,405
2011	1,507
2012	643
2013	2,119
2014	479
2015	1,079
2016	389
2017	508
2018	558
2019	447
2020	597
2021	547
2022	579
2023	952
2024	712
2025	665

Download the Data

Data for records on 1939-12-07: 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	598
20 to 40	3
40 to 60	1
60 to 80	1
80 to 100	0
100 to 120	1