Weather Records on 19 December 1939

390 weather records were set or tied worldwide on 19 December 1939. Highest significance: Hayward Rs, US.

Key Facts for 19 December 1939

On 19 December 1939, 390 weather records were set or tied at long-record stations worldwide.
251 were record highs and 9 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 387 daily.
Hayward Rs set a daily record precipitation of 25.9 mm (1.0 in) on 19 December 1939.
Across 152 earlier years (1793 to 2025) the same calendar date averaged 503 records.

Record Map

390 stations

390 station records on 19 December 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 19 December 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hayward Rs	United States	Record daily precipitation	25.9 mm (1.0 in)	56 of 100 (Notable)
Medford	United States	Record daily precipitation	31.8 mm (1.3 in)	51 of 100 (Notable)
Chemnitz	Germany	Record snow depth	22.0 cm (8.7 in)	48 of 100 (Notable)
Maple Plain	United States	Record daily snowfall	15.2 cm (6.0 in)	46 of 100 (Notable)
Spooner Ag Rsch STN	United States	Record daily snowfall	15.2 cm (6.0 in)	44 of 100 (Notable)
Medford	United States	Record daily snowfall	20.3 cm (8.0 in)	42 of 100 (Notable)
White River	Canada	Record daily snowfall	24.1 cm (9.5 in)	37 of 100 (Notable)
Macon	United States	Record daily precipitation	46.2 mm (1.8 in)	35 of 100 (Notable)
Long Lake Dam	United States	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Pine Rvr Dam	United States	Record daily snowfall	10.2 cm (4.0 in)	30 of 100 (Routine)
Stanley Wwtp	United States	Record daily snowfall	10.2 cm (4.0 in)	29 of 100 (Routine)
Garsebach Bei Meissen	Germany	Record snow depth	12.0 cm (4.7 in)	28 of 100 (Routine)
Simcoe	Canada	Record high minimum temperature	1.1 C (34.0 F)	26 of 100 (Routine)
Iron Mtn-Kingsford Wwtp	United States	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Greensburg	United States	Record high minimum temperature	7.2 C (45.0 F)	24 of 100 (Routine)
Bird Island	United States	Record daily snowfall	5.1 cm (2.0 in)	24 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high maximum temperature	16.1 C (61.0 F)	24 of 100 (Routine)
Gravette	United States	Record high maximum temperature	21.1 C (70.0 F)	23 of 100 (Routine)
Alma	United States	Record high minimum temperature	3.9 C (39.0 F)	23 of 100 (Routine)
Lafayette Rgnl AP	United States	Record daily precipitation	44.7 mm (1.8 in)	23 of 100 (Routine)
Bay City	United States	Record high minimum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Park Rapids Muni AP	United States	Record daily snowfall	6.4 cm (2.5 in)	22 of 100 (Routine)
Avoca (Railway House)	Australia	Record daily precipitation	28.4 mm (1.1 in)	21 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record daily snowfall	10.2 cm (4.0 in)	21 of 100 (Routine)
Henderson 2 NNW	United States	Record high maximum temperature	22.2 C (72.0 F)	21 of 100 (Routine)
Eau Claire	United States	Record daily snowfall	6.6 cm (2.6 in)	21 of 100 (Routine)
Traverse Cy Cherry Capital AP	United States	Record high minimum temperature	3.3 C (37.9 F)	21 of 100 (Routine)
Ishpeming	United States	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Minneapolis Wb Dwtn	United States	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Minocqua	United States	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Maple Plain	United States	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
White River	Canada	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Newberry-Luce Co Rd Commission	United States	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Pine Rvr Dam	United States	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Napoleon	United States	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Antigo	United States	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Tobolsk	Russia	Record daily precipitation	6.3 mm (0.25 in)	20 of 100 (Routine)
Taylors Falls 1 NE	United States	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Merrill	United States	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Farmington 3NW	United States	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Spooner Ag Rsch STN	United States	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Bowen Downs	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Prentice #2	United States	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Mackinaw City 2	United States	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Zumbrota	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Sturgeon Bay Exp Farm	United States	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Launceston (Pumping Station)	Australia	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Deer Park Sf	United States	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Faribault	United States	Record daily precipitation	7.9 mm (0.31 in)	20 of 100 (Routine)
Park Rapids Muni AP	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Campbell	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Pokegama Dam	United States	Record daily precipitation	7.1 mm (0.28 in)	20 of 100 (Routine)
Sandy Lake Dam Libby	United States	Record daily precipitation	6.1 mm (0.24 in)	20 of 100 (Routine)
Quesnel	Canada	Record daily precipitation	9.1 mm (0.36 in)	20 of 100 (Routine)
Lemon Cove	United States	Record high maximum temperature	20.6 C (69.1 F)	20 of 100 (Routine)
Vincennes 4 E	United States	Record high maximum temperature	17.2 C (63.0 F)	20 of 100 (Routine)
Stanley Wwtp	United States	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Wyndham Port	Australia	Record daily precipitation	36.8 mm (1.4 in)	19 of 100 (Routine)
Ivanhoe Station	Australia	Record daily precipitation	40.6 mm (1.6 in)	19 of 100 (Routine)

Counts by Type and Timescale

390 records

Records set or tied on 19 December 1939 by type: Highest daily maximum 159, Lowest daily maximum 6, Highest daily minimum 92, Lowest daily minimum 3, Heaviest daily rainfall 102, Heaviest daily snowfall 25, Deepest snow cover 3.

Records on 19 December 1939 by type
Record type	Records
Highest daily maximum	159
Lowest daily maximum	6
Highest daily minimum	92
Lowest daily minimum	3
Heaviest daily rainfall	102
Heaviest daily snowfall	25
Deepest snow cover	3

Records on 19 December 1939 by timescale: all-time 0, monthly 3, daily 387.

How Much Records Were Beaten By

311 broken records

Margins by which the 311 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

19 December 1939

Top 20 records on 19 December 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 December 1939	Hayward Rs, US	daily rain	25.9 mm (1.0 in)	23.4 mm (0.9 in)	42 years	56 of 100 (Notable)
19 December 1939	Medford, US	daily rain	31.8 mm (1.3 in)	29.3 mm (1.2 in)	24 years	51 of 100 (Notable)
19 December 1939	Chemnitz, DE	daily snow depth	22.0 cm (8.7 in)	15.0 cm (5.9 in)	36 years	48 of 100 (Notable)
19 December 1939	Maple Plain, US	daily snowfall	15.2 cm (6.0 in)	12.9 cm (5.1 in)	45 years	46 of 100 (Notable)
19 December 1939	Spooner Ag Rsch STN, US	daily snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	24 years	44 of 100 (Notable)
19 December 1939	Medford, US	daily snowfall	20.3 cm (8.0 in)	17.8 cm (7.0 in)	24 years	42 of 100 (Notable)
19 December 1939	White River, CA	daily snowfall	24.1 cm (9.5 in)	8.9 cm (3.5 in)	30 years	37 of 100 (Notable)
19 December 1939	Macon, US	daily rain	46.2 mm (1.8 in)	28.4 mm (1.1 in)	26 years	35 of 100 (Notable)
19 December 1939	Long Lake Dam, US	monthly rain	31.8 mm (1.3 in)	5.4 mm (0.21 in)	19 years	32 of 100 (Routine)
19 December 1939	Pine Rvr Dam, US	daily snowfall	10.2 cm (4.0 in)	6.4 cm (2.5 in)	34 years	30 of 100 (Routine)
19 December 1939	Stanley Wwtp, US	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	12 years	29 of 100 (Routine)
19 December 1939	Garsebach Bei Meissen, DE	daily snow depth	12.0 cm (4.7 in)	9.0 cm (3.5 in)	12 years	28 of 100 (Routine)
19 December 1939	Simcoe, CA	daily high min	1.1 C (34.0 F)	0.5 C (0.9 F)	65 years	26 of 100 (Routine)
19 December 1939	Iron Mtn-Kingsford Wwtp, US	daily rain	26.7 mm (1.1 in)	9.7 mm (0.38 in)	14 years	26 of 100 (Routine)
19 December 1939	Greensburg, US	daily high min	7.2 C (45.0 F)	5.5 C (9.9 F)	40 years	24 of 100 (Routine)
19 December 1939	Bird Island, US	daily snowfall	5.1 cm (2.0 in)	4.8 cm (1.9 in)	26 years	24 of 100 (Routine)
19 December 1939	Cleveland 2717 Euclid, US	daily high max	16.1 C (61.0 F)	0.5 C (0.9 F)	61 years	24 of 100 (Routine)
19 December 1939	Gravette, US	daily high max	21.1 C (70.0 F)	5.5 C (9.9 F)	36 years	23 of 100 (Routine)
19 December 1939	Alma, US	daily high min	3.9 C (39.0 F)	2.8 C (5.0 F)	49 years	23 of 100 (Routine)
19 December 1939	Lafayette Rgnl AP, US	daily rain	44.7 mm (1.8 in)	14.5 mm (0.6 in)	40 years	23 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 390 records.

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

Records on 12-19 in each year
Year	Records
1793	2
1795	1
1805	1
1835	1
1846	2
1849	1
1852	3
1855	3
1859	3
1860	1
1861	2
1869	2
1870	1
1875	2
1877	2
1880	1
1884	2
1885	1
1888	1
1889	3
1890	4
1892	4
1894	1
1895	4
1896	1
1898	3
1899	2
1900	1
1901	3
1902	16
1903	2
1904	19
1905	5
1906	9
1907	12
1908	12
1909	18
1910	22
1911	17
1912	41
1913	50
1914	23
1915	31
1916	38
1917	36
1918	24
1919	53
1920	30
1921	60
1922	155
1923	180
1924	492
1925	79
1926	152
1927	222
1928	45
1929	386
1930	76
1931	650
1932	239
1933	459
1934	455
1935	110
1936	689
1937	211
1938	237
1939	390
1940	392
1941	588
1942	654
1943	364
1944	241
1945	700
1946	182
1947	283
1948	397
1949	632
1950	545
1951	622
1952	469
1953	517
1954	443
1955	906
1956	287
1957	984
1958	386
1959	249
1960	432
1961	595
1962	670
1963	966
1964	753
1965	392
1966	851
1967	1,063
1968	900
1969	381
1970	485
1971	288
1972	325
1973	1,014
1974	252
1975	843
1976	398
1977	569
1978	1,191
1979	829
1980	456
1981	1,515
1982	768
1983	2,804
1984	1,066
1985	1,179
1986	609
1987	1,095
1988	1,001
1989	1,740
1990	1,463
1991	1,236
1992	1,176
1993	1,153
1994	692
1995	1,459
1996	2,108
1997	830
1998	855
1999	609
2000	1,154
2001	627
2002	1,467
2003	996
2004	664
2005	697
2006	1,061
2007	689
2008	1,545
2009	1,937
2010	1,610
2011	832
2012	774
2013	636
2014	537
2015	1,109
2016	1,080
2017	783
2018	397
2019	541
2020	327
2021	603
2022	494
2023	1,224
2024	864
2025	1,542

Download the Data

Data for records on 1939-12-19: 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 25	293
25 to 50	7
50 to 75	4
75 to 100	3
100 to 125	0
125 to 150	2
150 to 175	1
175 to 200	1