Weather Records on 16 December 1939

1,014 weather records were set or tied worldwide on 16 December 1939. Highest significance: Bologna, IT.

Key Facts for 16 December 1939

On 16 December 1939, 1,014 weather records were set or tied at long-record stations worldwide.
949 were record highs and 4 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 32 monthly and 982 daily.
Bologna set a daily record precipitation of 39.7 mm (1.6 in) on 16 December 1939.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 479 records.

Record Map

1,014 stations

1,014 station records on 16 December 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 December 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bologna	Italy	Record daily precipitation	39.7 mm (1.6 in)	60 of 100 (Major)
Dunderlandsdalen	Norway	Record daily precipitation	65.3 mm (2.6 in)	54 of 100 (Notable)
Falls City 2 SSW	United States	Record daily precipitation	108.7 mm (4.3 in)	52 of 100 (Notable)
Jefferson	United States	Record daily precipitation	62.2 mm (2.4 in)	45 of 100 (Notable)
Salem AP (McNary Field)	United States	Record daily precipitation	55.4 mm (2.2 in)	40 of 100 (Notable)
Skjomen	Norway	Record daily precipitation	32.3 mm (1.3 in)	39 of 100 (Notable)
Krakmo	Norway	Record daily precipitation	59.6 mm (2.3 in)	37 of 100 (Notable)
Vancouver Interst Brg	United States	Record daily precipitation	40.6 mm (1.6 in)	35 of 100 (Notable)
Detroit	United States	Record daily precipitation	64.3 mm (2.5 in)	32 of 100 (Routine)
Willapa Harbor	United States	Record high maximum temperature	18.3 C (64.9 F)	32 of 100 (Routine)
Beiarn	Norway	Record daily precipitation	58.6 mm (2.3 in)	30 of 100 (Routine)
Austin #2	United States	Record high minimum temperature	5.6 C (42.1 F)	30 of 100 (Routine)
Bedford 2 SE	United States	Record high maximum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
Nord-Rana	Norway	Record daily precipitation	46.5 mm (1.8 in)	29 of 100 (Routine)
Manati 2 E	Puerto Rico [United States]	Record daily precipitation	71.4 mm (2.8 in)	29 of 100 (Routine)
Irwin	United States	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Passau-Maierhof	Germany	Record snow depth	19.0 cm (7.5 in)	28 of 100 (Routine)
Laketown	United States	Record high maximum temperature	16.7 C (62.1 F)	28 of 100 (Routine)
La Ctr	United States	Record high maximum temperature	17.8 C (64.0 F)	28 of 100 (Routine)
Dubuque River	United States	Record high maximum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Seattle Urban Site	United States	Record daily precipitation	37.3 mm (1.5 in)	28 of 100 (Routine)
Garsebach Bei Meissen	Germany	Record snow depth	12.0 cm (4.7 in)	27 of 100 (Routine)
Rock Rapids	United States	Record high maximum temperature	17.2 C (63.0 F)	27 of 100 (Routine)
Alma	United States	Record high maximum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Beaver City	United States	Record high maximum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Flandreau	United States	Record high maximum temperature	16.1 C (61.0 F)	26 of 100 (Routine)
Winnemucca AP	United States	Record high maximum temperature	19.4 C (66.9 F)	26 of 100 (Routine)
Qu'appelle	Canada	Record high minimum temperature	0.0 C (32.0 F)	25 of 100 (Routine)
St Albans	Canada	Record high maximum temperature	7.2 C (45.0 F)	25 of 100 (Routine)
Idaho Springs	United States	Record high minimum temperature	6.1 C (43.0 F)	25 of 100 (Routine)
Knoxville	United States	Record high maximum temperature	19.4 C (66.9 F)	25 of 100 (Routine)
Franklin	United States	Record high maximum temperature	20.6 C (69.1 F)	25 of 100 (Routine)
Qu'appelle	Canada	Record high maximum temperature	6.1 C (43.0 F)	24 of 100 (Routine)
Kapskarmo	Norway	Record daily precipitation	30.1 mm (1.2 in)	24 of 100 (Routine)
Soldier Creek Adm Site	United States	Record high maximum temperature	11.7 C (53.1 F)	24 of 100 (Routine)
Ames 3 SW	United States	Record high maximum temperature	17.2 C (63.0 F)	24 of 100 (Routine)
Coldwater	United States	Record high maximum temperature	22.2 C (72.0 F)	24 of 100 (Routine)
Norton 9SSE	United States	Record high maximum temperature	21.1 C (70.0 F)	24 of 100 (Routine)
Farmington 3NW	United States	Record high maximum temperature	15.6 C (60.1 F)	24 of 100 (Routine)
Woodruff	United States	Record high maximum temperature	15.0 C (59.0 F)	24 of 100 (Routine)
Milwaukee Wb City	United States	Record high maximum temperature	10.6 C (51.1 F)	24 of 100 (Routine)
Drevja	Norway	Record daily precipitation	40.6 mm (1.6 in)	23 of 100 (Routine)
Kilmashogue,Lowlands	South Africa	Record daily precipitation	34.3 mm (1.4 in)	23 of 100 (Routine)
Elkader 6 SSW	United States	Record high maximum temperature	14.4 C (57.9 F)	23 of 100 (Routine)
Hampton	United States	Record high maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Millerton	United States	Record high maximum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Olin	United States	Record high maximum temperature	14.4 C (57.9 F)	23 of 100 (Routine)
Osage	United States	Record high maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Sibley	United States	Record high maximum temperature	16.1 C (61.0 F)	23 of 100 (Routine)
New London	United States	Record high maximum temperature	13.9 C (57.0 F)	23 of 100 (Routine)
St Peter	United States	Record high maximum temperature	18.3 C (64.9 F)	23 of 100 (Routine)
Big Timber	United States	Record high minimum temperature	9.4 C (48.9 F)	23 of 100 (Routine)
Billings Wtp	United States	Record high minimum temperature	5.6 C (42.1 F)	23 of 100 (Routine)
O'Neill	United States	Record high maximum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Hilland 2 NW	United States	Record high maximum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Tyndall	United States	Record high maximum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Republic	United States	Record high maximum temperature	8.3 C (46.9 F)	23 of 100 (Routine)
Lincoln UNIV Pwr Plt	United States	Record high maximum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Brandon Cda	Canada	Record high maximum temperature	7.8 C (46.0 F)	22 of 100 (Routine)
Afton	United States	Record high maximum temperature	16.1 C (61.0 F)	22 of 100 (Routine)

Counts by Type and Timescale

1,014 records

Records set or tied on 16 December 1939 by type: Highest daily maximum 634, Lowest daily maximum 3, Highest daily minimum 315, Lowest daily minimum 1, Heaviest daily rainfall 59, Deepest snow cover 2.

Records on 16 December 1939 by type
Record type	Records
Highest daily maximum	634
Lowest daily maximum	3
Highest daily minimum	315
Lowest daily minimum	1
Heaviest daily rainfall	59
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 16 December 1939 by timescale: all-time 0, monthly 32, daily 982.

How Much Records Were Beaten By

874 broken records

Margins by which the 874 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.0. Ties are not counted.

Top 20 by Significance

16 December 1939

Top 20 records on 16 December 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 December 1939	Bologna, IT	daily rain	39.7 mm (1.6 in)	22.7 mm (0.9 in)	86 years	60 of 100 (Major)
16 December 1939	Dunderlandsdalen, NO	daily rain	65.3 mm (2.6 in)	45.5 mm (1.8 in)	34 years	54 of 100 (Notable)
16 December 1939	Falls City 2 SSW, US	daily rain	108.7 mm (4.3 in)	75.9 mm (3.0 in)	33 years	52 of 100 (Notable)
16 December 1939	Jefferson, US	daily rain	62.2 mm (2.4 in)	40.6 mm (1.6 in)	14 years	45 of 100 (Notable)
16 December 1939	Salem AP (McNary Field), US	daily rain	55.4 mm (2.2 in)	37.1 mm (1.5 in)	9 years	40 of 100 (Notable)
16 December 1939	Skjomen, NO	daily rain	32.3 mm (1.3 in)	18.1 mm (0.7 in)	18 years	39 of 100 (Notable)
16 December 1939	Krakmo, NO	daily rain	59.6 mm (2.3 in)	32.9 mm (1.3 in)	18 years	37 of 100 (Notable)
16 December 1939	Vancouver Interst Brg, US	daily rain	40.6 mm (1.6 in)	26.4 mm (1.0 in)	36 years	35 of 100 (Notable)
16 December 1939	Detroit, US	daily rain	64.3 mm (2.5 in)	32.5 mm (1.3 in)	26 years	32 of 100 (Routine)
16 December 1939	Willapa Harbor, US	daily high max	18.3 C (64.9 F)	6.1 C (11.0 F)	34 years	32 of 100 (Routine)
16 December 1939	Beiarn, NO	daily rain	58.6 mm (2.3 in)	29.9 mm (1.2 in)	5 years	30 of 100 (Routine)
16 December 1939	Austin #2, US	monthly high min	5.6 C (42.1 F)	1.2 C (2.2 F)	46 years	30 of 100 (Routine)
16 December 1939	Bedford 2 SE, US	daily high max	14.4 C (57.9 F)	8.8 C (15.8 F)	33 years	30 of 100 (Routine)
16 December 1939	Nord-Rana, NO	daily rain	46.5 mm (1.8 in)	28.6 mm (1.1 in)	6 years	29 of 100 (Routine)
16 December 1939	Manati 2 E, PR	daily rain	71.4 mm (2.8 in)	25.7 mm (1.0 in)	30 years	29 of 100 (Routine)
16 December 1939	Irwin, US	daily rain	25.4 mm (1.0 in)	10.2 mm (0.4 in)	36 years	29 of 100 (Routine)
16 December 1939	Passau-Maierhof, DE	daily snow depth	19.0 cm (7.5 in)	6.0 cm (2.4 in)	49 years	28 of 100 (Routine)
16 December 1939	Laketown, US	daily high max	16.7 C (62.1 F)	8.4 C (15.1 F)	21 years	28 of 100 (Routine)
16 December 1939	La Ctr, US	daily high max	17.8 C (64.0 F)	6.7 C (12.1 F)	21 years	28 of 100 (Routine)
16 December 1939	Dubuque River, US	daily high max	14.4 C (57.9 F)	2.7 C (4.9 F)	61 years	28 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 1,014 records.

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

Records on 12-16 in each year
Year	Records
1793	2
1798	2
1808	1
1810	1
1814	2
1815	2
1835	1
1839	1
1840	1
1846	3
1852	1
1853	1
1859	3
1864	1
1869	1
1870	1
1872	1
1876	1
1877	1
1878	2
1879	1
1885	2
1886	2
1888	2
1889	1
1890	4
1891	2
1892	3
1893	1
1894	1
1895	1
1896	7
1897	4
1898	1
1899	2
1900	2
1901	4
1902	17
1903	6
1904	8
1905	4
1906	5
1907	30
1908	11
1909	5
1910	38
1911	26
1912	31
1913	12
1914	26
1915	55
1916	31
1917	60
1918	33
1919	52
1920	61
1921	35
1922	62
1923	205
1924	347
1925	93
1926	130
1927	218
1928	338
1929	383
1930	398
1931	168
1932	880
1933	716
1934	163
1935	71
1936	429
1937	351
1938	142
1939	1,014
1940	633
1941	348
1942	550
1943	491
1944	189
1945	478
1946	357
1947	506
1948	775
1949	132
1950	272
1951	987
1952	349
1953	265
1954	305
1955	325
1956	650
1957	478
1958	497
1959	605
1960	393
1961	858
1962	859
1963	484
1964	639
1965	576
1966	417
1967	886
1968	557
1969	205
1970	726
1971	1,540
1972	1,020
1973	823
1974	546
1975	493
1976	526
1977	950
1978	532
1979	528
1980	1,322
1981	1,498
1982	1,208
1983	1,156
1984	1,944
1985	983
1986	485
1987	1,377
1988	605
1989	3,181
1990	753
1991	659
1992	1,408
1993	676
1994	698
1995	714
1996	797
1997	1,260
1998	698
1999	821
2000	1,160
2001	1,197
2002	990
2003	679
2004	510
2005	1,073
2006	1,020
2007	1,301
2008	2,049
2009	1,032
2010	1,585
2011	777
2012	912
2013	762
2014	465
2015	925
2016	1,588
2017	349
2018	624
2019	786
2020	415
2021	1,485
2022	836
2023	841
2024	755
2025	1,820

Download the Data

Data for records on 1939-12-16: 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	848
10 to 20	10
20 to 30	8
30 to 40	3
40 to 50	2
50 to 60	0
60 to 70	1
70 to 80	2