Weather Records on 12 October 1939

198 weather records were set or tied worldwide on 12 October 1939. Highest significance: Thornlea, ZA.

Key Facts for 12 October 1939

On 12 October 1939, 198 weather records were set or tied at long-record stations worldwide.
60 were record highs and 41 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 196 daily.
Thornlea set a daily record precipitation of 28.4 mm (1.1 in) on 12 October 1939.
Across 163 earlier years (1805 to 2026) the same calendar date averaged 453 records.

Record Map

198 stations

198 station records on 12 October 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 October 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Thornlea	South Africa	Record daily precipitation	28.4 mm (1.1 in)	52 of 100 (Notable)
Durham	United Kingdom	Record daily precipitation	36.0 mm (1.4 in)	49 of 100 (Notable)
Wetaskiwin	Canada	Record daily snowfall	12.7 cm (5.0 in)	43 of 100 (Notable)
Atlin	Canada	Record daily snowfall	15.2 cm (6.0 in)	36 of 100 (Notable)
Ai-Petri	Ukraine	Record daily precipitation	54.0 mm (2.1 in)	36 of 100 (Notable)
Cuttack	India	Record daily precipitation	88.1 mm (3.5 in)	33 of 100 (Routine)
Santhanpara	India	Record daily precipitation	72.4 mm (2.9 in)	31 of 100 (Routine)
Edmonton	Canada	Record daily snowfall	8.6 cm (3.4 in)	30 of 100 (Routine)
Chatillon-Sur-Seine	France	Record daily precipitation	39.0 mm (1.5 in)	26 of 100 (Routine)
Gudalur	India	Record daily precipitation	62.2 mm (2.4 in)	26 of 100 (Routine)
Hondo	United States	Record low maximum temperature	17.8 C (64.0 F)	26 of 100 (Routine)
Astrakan	Russia	Record low maximum temperature	2.2 C (36.0 F)	25 of 100 (Routine)
Hillsdown	Canada	Record daily snowfall	10.2 cm (4.0 in)	24 of 100 (Routine)
Poronajsk	Russia	Record daily precipitation	25.1 mm (1.0 in)	23 of 100 (Routine)
Richmond C/K (Tnk)	South Africa	Record daily precipitation	28.4 mm (1.1 in)	23 of 100 (Routine)
Sierra Madre Henszey	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Wandering Comparison	Australia	Record low maximum temperature	11.4 C (52.5 F)	21 of 100 (Routine)
Pointe Riche	Canada	Record daily precipitation	31.8 mm (1.3 in)	21 of 100 (Routine)
Thiruthuraipoond	India	Record daily precipitation	92.7 mm (3.6 in)	21 of 100 (Routine)
Mannargudi	India	Record daily precipitation	78.7 mm (3.1 in)	21 of 100 (Routine)
San Jacinto	United States	Record high minimum temperature	20.0 C (68.0 F)	21 of 100 (Routine)
Sabinal	United States	Record low maximum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Vastervik	Sweden	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Jena Sternwarte	Germany	Record daily precipitation	13.8 mm (0.5 in)	20 of 100 (Routine)
Wetaskiwin	Canada	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Oudtshoorn	South Africa	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Grass Patch	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Philipstown (Tnk)	South Africa	Record daily precipitation	4.3 mm (0.17 in)	20 of 100 (Routine)
Douglas	South Africa	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Kareekloof	South Africa	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
De Aar	South Africa	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Southern Pines 2 W	United States	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Alix	Canada	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Kalmar_D	Sweden	Record daily precipitation	9.2 mm (0.36 in)	20 of 100 (Routine)
Touws River	South Africa	Record daily precipitation	2.0 mm (0.08 in)	20 of 100 (Routine)
Bunkin	Australia	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Portage la Prairie	Canada	Record daily snowfall	4.8 cm (1.9 in)	20 of 100 (Routine)
Stuttgart	Germany	Record daily precipitation	20.0 mm (0.8 in)	20 of 100 (Routine)
Cowcowing	Australia	Record daily precipitation	6.1 mm (0.24 in)	20 of 100 (Routine)
Fort St James	Canada	Record high minimum temperature	6.7 C (44.1 F)	20 of 100 (Routine)
Tartu	Estonia	Record low minimum temperature	-4.9 C (23.2 F)	20 of 100 (Routine)
Dharmapuri	India	Record daily precipitation	74.2 mm (2.9 in)	20 of 100 (Routine)
Represa	United States	Record high minimum temperature	18.3 C (64.9 F)	20 of 100 (Routine)
Princess Anne	United States	Record daily precipitation	30.5 mm (1.2 in)	20 of 100 (Routine)
Eagle Pass 3N	United States	Record low maximum temperature	16.7 C (62.1 F)	20 of 100 (Routine)
Falfurrias	United States	Record low maximum temperature	18.9 C (66.0 F)	20 of 100 (Routine)
Fort Simpson	Canada	Record low minimum temperature	-17.8 C (0.0 F)	19 of 100 (Routine)
Bolpur	India	Record daily precipitation	38.1 mm (1.5 in)	19 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record low minimum temperature	-7.0 C (19.4 F)	19 of 100 (Routine)
Astoria	United States	Record high maximum temperature	26.1 C (79.0 F)	19 of 100 (Routine)
Higginsville	Australia	Record daily precipitation	15.2 mm (0.6 in)	18 of 100 (Routine)
Hambantota	Sri Lanka	Record high minimum temperature	25.7 C (78.3 F)	18 of 100 (Routine)
Tartu-Toravere	Estonia	Record low minimum temperature	-4.9 C (23.2 F)	18 of 100 (Routine)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	30.5 mm (1.2 in)	18 of 100 (Routine)
Jaggiayapet	India	Record daily precipitation	38.9 mm (1.5 in)	18 of 100 (Routine)
Vallam	India	Record daily precipitation	50.8 mm (2.0 in)	18 of 100 (Routine)
Sonamukhi	India	Record daily precipitation	17.3 mm (0.7 in)	18 of 100 (Routine)
Nuwejaarskraal	South Africa	Record daily precipitation	7.6 mm (0.30 in)	18 of 100 (Routine)
Dunmurray	South Africa	Record daily precipitation	0.8 mm (0.03 in)	18 of 100 (Routine)
Dawson	Canada	Record low minimum temperature	-22.8 C (-9.0 F)	17 of 100 (Routine)

Counts by Type and Timescale

198 records

Records set or tied on 12 October 1939 by type: Highest daily maximum 39, Lowest daily maximum 27, Highest daily minimum 21, Lowest daily minimum 14, Heaviest daily rainfall 89, Heaviest daily snowfall 8.

Records on 12 October 1939 by type
Record type	Records
Highest daily maximum	39
Lowest daily maximum	27
Highest daily minimum	21
Lowest daily minimum	14
Heaviest daily rainfall	89
Heaviest daily snowfall	8
Deepest snow cover	0

Records on 12 October 1939 by timescale: all-time 0, monthly 2, daily 196.

How Much Records Were Beaten By

170 broken records

Margins by which the 170 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.0. Ties are not counted.

Top 20 by Significance

12 October 1939

Top 20 records on 12 October 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 October 1939	Thornlea, ZA	daily rain	28.4 mm (1.1 in)	28.4 mm (1.1 in)	39 years	52 of 100 (Notable)
12 October 1939	Durham, GB	daily rain	36.0 mm (1.4 in)	26.0 mm (1.0 in)	12 years	49 of 100 (Notable)
12 October 1939	Wetaskiwin, CA	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	36 years	43 of 100 (Notable)
12 October 1939	Atlin, CA	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	30 years	36 of 100 (Notable)
12 October 1939	Ai-Petri, UA	daily rain	54.0 mm (2.1 in)	26.9 mm (1.1 in)	32 years	36 of 100 (Notable)
12 October 1939	Cuttack, IN	daily rain	88.1 mm (3.5 in)	52.0 mm (2.0 in)	25 years	33 of 100 (Routine)
12 October 1939	Santhanpara, IN	daily rain	72.4 mm (2.9 in)	43.4 mm (1.7 in)	16 years	31 of 100 (Routine)
12 October 1939	Edmonton, CA	daily snowfall	8.6 cm (3.4 in)	7.3 cm (2.9 in)	39 years	30 of 100 (Routine)
12 October 1939	Chatillon-Sur-Seine, FR	daily rain	39.0 mm (1.5 in)	11.3 mm (0.4 in)	21 years	26 of 100 (Routine)
12 October 1939	Gudalur, IN	daily rain	62.2 mm (2.4 in)	21.3 mm (0.8 in)	32 years	26 of 100 (Routine)
12 October 1939	Hondo, US	daily low max	17.8 C (64.0 F)	6.1 C (11.0 F)	36 years	26 of 100 (Routine)
12 October 1939	Astrakan, RU	daily low max	2.2 C (36.0 F)	6.2 C (11.2 F)	28 years	25 of 100 (Routine)
12 October 1939	Hillsdown, CA	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	12 years	24 of 100 (Routine)
12 October 1939	Poronajsk, RU	daily rain	25.1 mm (1.0 in)	13.0 mm (0.5 in)	29 years	23 of 100 (Routine)
12 October 1939	Richmond C/K (Tnk), ZA	daily rain	28.4 mm (1.1 in)	8.1 mm (0.32 in)	32 years	23 of 100 (Routine)
12 October 1939	Sierra Madre Henszey, US	daily high min	21.1 C (70.0 F)	2.8 C (5.0 F)	36 years	22 of 100 (Routine)
12 October 1939	Wandering Comparison, AU	daily low max	11.4 C (52.5 F)	3.4 C (6.1 F)	36 years	21 of 100 (Routine)
12 October 1939	Pointe Riche, CA	daily rain	31.8 mm (1.3 in)	1.3 mm (0.05 in)	52 years	21 of 100 (Routine)
12 October 1939	Thiruthuraipoond, IN	daily rain	92.7 mm (3.6 in)	17.3 mm (0.7 in)	33 years	21 of 100 (Routine)
12 October 1939	Mannargudi, IN	daily rain	78.7 mm (3.1 in)	17.2 mm (0.7 in)	33 years	21 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

1805 to 1939

Records set or tied on this calendar date in each year from 1805 to 1939. 1939 had 198 records.

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

Records on 10-12 in each year
Year	Records
1805	2
1809	1
1810	1
1814	3
1822	1
1839	1
1841	1
1843	1
1850	1
1852	1
1854	1
1859	1
1860	2
1861	1
1867	1
1871	3
1873	2
1875	2
1876	5
1879	2
1881	2
1884	1
1885	2
1886	1
1887	2
1888	1
1889	1
1890	3
1891	1
1892	1
1893	2
1894	2
1895	2
1896	3
1897	3
1898	2
1899	3
1900	2
1901	6
1902	14
1903	16
1904	30
1905	13
1906	16
1907	10
1908	13
1909	30
1910	13
1911	10
1912	30
1913	33
1914	17
1915	34
1916	29
1917	53
1918	29
1919	53
1920	79
1921	102
1922	21
1923	200
1924	129
1925	107
1926	201
1927	195
1928	714
1929	165
1930	606
1931	283
1932	398
1933	155
1934	477
1935	209
1936	301
1937	185
1938	470
1939	198
1940	235
1941	226
1942	540
1943	418
1944	274
1945	321
1946	554
1947	358
1948	311
1949	725
1950	594
1951	391
1952	352
1953	252
1954	911
1955	383
1956	899
1957	473
1958	448
1959	501
1960	449
1961	436
1962	971
1963	459
1964	636
1965	157
1966	423
1967	623
1968	443
1969	1,828
1970	763
1971	382
1972	412
1973	673
1974	369
1975	830
1976	582
1977	832
1978	525
1979	898
1980	741
1981	1,201
1982	777
1983	992
1984	636
1985	872
1986	1,510
1987	1,530
1988	1,015
1989	543
1990	1,325
1991	948
1992	865
1993	1,145
1994	934
1995	1,238
1996	816
1997	1,851
1998	741
1999	641
2000	1,095
2001	1,194
2002	1,139
2003	1,043
2004	750
2005	872
2006	1,357
2007	566
2008	1,669
2009	2,300
2010	797
2011	906
2012	921
2013	558
2014	514
2015	964
2016	374
2017	1,068
2018	1,195
2019	1,321
2020	655
2021	1,294
2022	439
2023	904
2024	958
2025	624
2026	710

Download the Data

Data for records on 1939-10-12: 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	154
20 to 40	8
40 to 60	4
60 to 80	2
80 to 100	0
100 to 120	1
120 to 140	1