Weather Records on 31 December 1939

298 weather records were set or tied worldwide on 31 December 1939. Highest significance: Cadelga, AU.

Key Facts for 31 December 1939

On 31 December 1939, 298 weather records were set or tied at long-record stations worldwide.
96 were record highs and 113 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 294 daily.
Cadelga set a daily record precipitation of 36.3 mm (1.4 in) on 31 December 1939.
Across 157 earlier years (1797 to 2025) the same calendar date averaged 488 records.

Record Map

298 stations

298 station records on 31 December 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 December 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cadelga	Australia	Record daily precipitation	36.3 mm (1.4 in)	56 of 100 (Notable)
Grayling	United States	Record daily snowfall	22.9 cm (9.0 in)	47 of 100 (Notable)
Mt Vernon 3 NE	United States	Record snow depth	20.3 cm (8.0 in)	44 of 100 (Notable)
Mount Forest	Canada	Record daily snowfall	25.4 cm (10.0 in)	43 of 100 (Notable)
Winbar	Australia	Record daily precipitation	31.0 mm (1.2 in)	36 of 100 (Notable)
Stratford	Canada	Record daily snowfall	12.7 cm (5.0 in)	32 of 100 (Routine)
Delphi 2 N	United States	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Rolla Missouri S&T	United States	Record daily snowfall	5.1 cm (2.0 in)	29 of 100 (Routine)
Gudauri	Georgia	Record daily precipitation	28.4 mm (1.1 in)	27 of 100 (Routine)
Rolla Missouri S&T	United States	Record snow depth	20.3 cm (8.0 in)	27 of 100 (Routine)
Carandotta Station	Australia	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)
Ord River	Australia	Record daily precipitation	38.1 mm (1.5 in)	25 of 100 (Routine)
Hvar	Croatia	Record low minimum temperature	-2.4 C (27.7 F)	23 of 100 (Routine)
Griggsville	United States	Record snow depth	25.4 cm (10.0 in)	23 of 100 (Routine)
Ashland	United States	Record high minimum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Springfield	United States	Record snow depth	10.2 cm (4.0 in)	23 of 100 (Routine)
Greifswald	Germany	Record snow depth	17.0 cm (6.7 in)	22 of 100 (Routine)
China Flat	United States	Record high minimum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
Jacksonville	United States	Record high minimum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Prospect 2 SW	United States	Record high minimum temperature	7.2 C (45.0 F)	22 of 100 (Routine)
Hohenpeissenberg	Germany	Record low minimum temperature	-16.7 C (1.9 F)	21 of 100 (Routine)
Glenwood Spgs #2	United States	Record daily snowfall	15.2 cm (6.0 in)	21 of 100 (Routine)
Jacksonville 2E	United States	Record low minimum temperature	-22.2 C (-8.0 F)	21 of 100 (Routine)
Morrisonville 4 SE	United States	Record low minimum temperature	-22.2 C (-8.0 F)	21 of 100 (Routine)
Hillsboro	United States	Record snow depth	17.8 cm (7.0 in)	21 of 100 (Routine)
Niulii 179	United States	Record high minimum temperature	21.1 C (70.0 F)	21 of 100 (Routine)
Orlando Executive AP	United States	Record low maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Coorabulka	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Ironton	United States	Record snow depth	2.5 cm (1.0 in)	20 of 100 (Routine)
Republic	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Urandangi	Australia	Record daily precipitation	25.7 mm (1.0 in)	20 of 100 (Routine)
Husum	Germany	Record snow depth	17.0 cm (6.7 in)	20 of 100 (Routine)
Cape Town Fire Station	South Africa	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Ft Collins	United States	Record high minimum temperature	0.0 C (32.0 F)	20 of 100 (Routine)
Fulton	United States	Record low maximum temperature	-11.7 C (10.9 F)	20 of 100 (Routine)
Nashua 2 NNW	United States	Record low minimum temperature	-19.4 C (-2.9 F)	20 of 100 (Routine)
Lakeview 2 NNW	United States	Record high minimum temperature	1.7 C (35.1 F)	20 of 100 (Routine)
Spokane Intl AP	United States	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Osijek	Croatia	Record low maximum temperature	-8.4 C (16.9 F)	19 of 100 (Routine)
Riksgransen	Sweden	Record low minimum temperature	-28.0 C (-18.4 F)	19 of 100 (Routine)
Redding Fire STN 2	United States	Record high minimum temperature	8.9 C (48.0 F)	19 of 100 (Routine)
Carlinville	United States	Record snow depth	20.3 cm (8.0 in)	19 of 100 (Routine)
Princeton	United States	Record low minimum temperature	-14.4 C (6.1 F)	19 of 100 (Routine)
Harrisonville	United States	Record low maximum temperature	-9.4 C (15.1 F)	19 of 100 (Routine)
Jefferson City Wtp	United States	Record low maximum temperature	-9.4 C (15.1 F)	19 of 100 (Routine)
Louisiana Starks Nurse	United States	Record low maximum temperature	-10.6 C (12.9 F)	19 of 100 (Routine)
St Charles Elm Pt	United States	Record low maximum temperature	-9.4 C (15.1 F)	19 of 100 (Routine)
Austin #2	United States	Record high minimum temperature	0.0 C (32.0 F)	19 of 100 (Routine)
Adrian	United States	Record daily precipitation	6.9 mm (0.27 in)	19 of 100 (Routine)
Grants Pass	United States	Record high minimum temperature	10.0 C (50.0 F)	19 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record high minimum temperature	4.4 C (39.9 F)	19 of 100 (Routine)
Dalhart Exp STN	United States	Record snow depth	12.7 cm (5.0 in)	19 of 100 (Routine)
Salem AP (McNary Field)	United States	Record high maximum temperature	13.9 C (57.0 F)	19 of 100 (Routine)
Port Lincoln	Australia	Record low minimum temperature	10.0 C (50.0 F)	18 of 100 (Routine)
Kremsmuenster	Austria	Record low minimum temperature	-20.8 C (-5.4 F)	18 of 100 (Routine)
Upper Shillong	India	Record daily precipitation	2.0 mm (0.08 in)	18 of 100 (Routine)
Norddal	Norway	Record snow depth	70.0 cm (27.6 in)	18 of 100 (Routine)
1 WSW Princeton	United States	Record low minimum temperature	-18.3 C (-0.9 F)	18 of 100 (Routine)
Winamac 2SSE	United States	Record low maximum temperature	-8.9 C (16.0 F)	18 of 100 (Routine)
Millerton	United States	Record low maximum temperature	-11.7 C (10.9 F)	18 of 100 (Routine)

Counts by Type and Timescale

298 records

Records set or tied on 31 December 1939 by type: Highest daily maximum 31, Lowest daily maximum 50, Highest daily minimum 65, Lowest daily minimum 63, Heaviest daily rainfall 31, Heaviest daily snowfall 18, Deepest snow cover 40.

Records on 31 December 1939 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	50
Highest daily minimum	65
Lowest daily minimum	63
Heaviest daily rainfall	31
Heaviest daily snowfall	18
Deepest snow cover	40

Records on 31 December 1939 by timescale: all-time 0, monthly 4, daily 294.

How Much Records Were Beaten By

223 broken records

Margins by which the 223 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 140.0. Ties are not counted.

Top 20 by Significance

31 December 1939

Top 20 records on 31 December 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 December 1939	Cadelga, AU	daily rain	36.3 mm (1.4 in)	36.3 mm (1.4 in)	51 years	56 of 100 (Notable)
31 December 1939	Grayling, US	daily snowfall	22.9 cm (9.0 in)	12.7 cm (5.0 in)	36 years	47 of 100 (Notable)
31 December 1939	Mt Vernon 3 NE, US	daily snow depth	20.3 cm (8.0 in)	10.1 cm (4.0 in)	43 years	44 of 100 (Notable)
31 December 1939	Mount Forest, CA	daily snowfall	25.4 cm (10.0 in)	10.2 cm (4.0 in)	43 years	43 of 100 (Notable)
31 December 1939	Winbar, AU	daily rain	31.0 mm (1.2 in)	21.1 mm (0.8 in)	41 years	36 of 100 (Notable)
31 December 1939	Stratford, CA	daily snowfall	12.7 cm (5.0 in)	5.1 cm (2.0 in)	51 years	32 of 100 (Routine)
31 December 1939	Delphi 2 N, US	daily rain	34.3 mm (1.4 in)	24.1 mm (0.9 in)	12 years	32 of 100 (Routine)
31 December 1939	Rolla Missouri S&T, US	daily snowfall	5.1 cm (2.0 in)	4.6 cm (1.8 in)	41 years	29 of 100 (Routine)
31 December 1939	Gudauri, GE	daily rain	28.4 mm (1.1 in)	6.4 mm (0.25 in)	51 years	27 of 100 (Routine)
31 December 1939	Rolla Missouri S&T, US	monthly snow depth	20.3 cm (8.0 in)	2.5 cm (1.0 in)	22 years	27 of 100 (Routine)
31 December 1939	Carandotta Station, AU	daily rain	32.0 mm (1.3 in)	17.8 mm (0.7 in)	22 years	26 of 100 (Routine)
31 December 1939	Ord River, AU	daily rain	38.1 mm (1.5 in)	28.7 mm (1.1 in)	5 years	25 of 100 (Routine)
31 December 1939	Hvar, HR	daily low min	-2.4 C (27.7 F)	1.0 C (1.8 F)	51 years	23 of 100 (Routine)
31 December 1939	Griggsville, US	daily snow depth	25.4 cm (10.0 in)	10.2 cm (4.0 in)	12 years	23 of 100 (Routine)
31 December 1939	Ashland, US	monthly high min	11.1 C (52.0 F)	0.5 C (0.9 F)	28 years	23 of 100 (Routine)
31 December 1939	Springfield, US	daily snow depth	10.2 cm (4.0 in)	7.7 cm (3.0 in)	25 years	23 of 100 (Routine)
31 December 1939	Greifswald, DE	daily snow depth	17.0 cm (6.7 in)	4.0 cm (1.6 in)	30 years	22 of 100 (Routine)
31 December 1939	China Flat, US	daily high min	10.0 C (50.0 F)	4.4 C (7.9 F)	25 years	22 of 100 (Routine)
31 December 1939	Jacksonville, US	daily high min	8.3 C (46.9 F)	3.9 C (7.0 F)	25 years	22 of 100 (Routine)
31 December 1939	Prospect 2 SW, US	daily high min	7.2 C (45.0 F)	5.0 C (9.0 F)	25 years	22 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

1797 to 1939

Records set or tied on this calendar date in each year from 1797 to 1939. 1939 had 298 records.

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

Records on 12-31 in each year
Year	Records
1797	1
1799	2
1826	1
1836	1
1842	2
1850	3
1853	1
1854	1
1859	1
1860	1
1867	1
1870	2
1872	2
1874	4
1875	2
1876	2
1878	2
1879	2
1880	2
1882	1
1884	2
1885	1
1886	3
1887	1
1888	2
1890	2
1891	8
1892	4
1895	4
1897	6
1898	5
1899	4
1900	3
1901	16
1902	3
1903	3
1904	11
1905	9
1906	31
1907	11
1908	7
1909	5
1910	25
1911	14
1912	17
1913	46
1914	34
1915	32
1916	25
1917	239
1918	24
1919	38
1920	64
1921	130
1922	83
1923	280
1924	113
1925	183
1926	77
1927	491
1928	53
1929	224
1930	58
1931	543
1932	394
1933	409
1934	181
1935	309
1936	567
1937	500
1938	247
1939	298
1940	467
1941	159
1942	352
1943	159
1944	259
1945	210
1946	707
1947	461
1948	591
1949	384
1950	310
1951	1,421
1952	377
1953	410
1954	286
1955	429
1956	216
1957	724
1958	584
1959	414
1960	389
1961	309
1962	810
1963	1,015
1964	388
1965	1,371
1966	326
1967	1,023
1968	1,371
1969	825
1970	579
1971	568
1972	836
1973	1,370
1974	590
1975	791
1976	1,306
1977	641
1978	2,791
1979	448
1980	1,448
1981	786
1982	639
1983	2,220
1984	942
1985	593
1986	616
1987	845
1988	600
1989	506
1990	1,379
1991	703
1992	1,062
1993	718
1994	878
1995	1,151
1996	2,202
1997	988
1998	739
1999	524
2000	1,575
2001	748
2002	1,232
2003	523
2004	1,278
2005	959
2006	2,089
2007	652
2008	656
2009	867
2010	1,544
2011	739
2012	803
2013	606
2014	903
2015	748
2016	678
2017	1,589
2018	620
2019	593
2020	489
2021	1,739
2022	1,497
2023	474
2024	460
2025	760

Download the Data

Data for records on 1939-12-31: 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	187
20 to 40	18
40 to 60	9
60 to 80	2
80 to 100	0
100 to 120	5
120 to 140	2