Weather Records on 17 October 1939

424 weather records were set or tied worldwide on 17 October 1939. Highest significance: Oxford, GB.

Key Facts for 17 October 1939

On 17 October 1939, 424 weather records were set or tied at long-record stations worldwide.
38 were record highs and 297 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 422 daily.
Oxford set a daily record precipitation of 40.6 mm (1.6 in) on 17 October 1939.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 440 records.

Record Map

424 stations

424 station records on 17 October 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Oxford	United Kingdom	Record daily precipitation	40.6 mm (1.6 in)	72 of 100 (Major)
Kazan	Russia	Record daily precipitation	32.6 mm (1.3 in)	56 of 100 (Notable)
Tumkur	India	Record daily precipitation	105.4 mm (4.1 in)	45 of 100 (Notable)
Kolar	India	Record daily precipitation	66.5 mm (2.6 in)	40 of 100 (Notable)
St John's	Canada	Record daily precipitation	54.9 mm (2.2 in)	39 of 100 (Notable)
Old Halls Creek	Australia	Record low maximum temperature	25.3 C (77.5 F)	38 of 100 (Notable)
Chickballapur	India	Record daily precipitation	66.0 mm (2.6 in)	36 of 100 (Notable)
Mulbagal	India	Record daily precipitation	97.8 mm (3.9 in)	35 of 100 (Notable)
Bangalore	India	Record daily precipitation	48.5 mm (1.9 in)	34 of 100 (Routine)
Sheffield	United Kingdom	Record daily precipitation	36.3 mm (1.4 in)	33 of 100 (Routine)
Alur	India	Record daily precipitation	127.0 mm (5.0 in)	32 of 100 (Routine)
Venkatagirikota	India	Record daily precipitation	57.9 mm (2.3 in)	30 of 100 (Routine)
Represa	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Santhanpara	India	Record daily precipitation	95.3 mm (3.8 in)	29 of 100 (Routine)
Hay River	Canada	Record daily snowfall	10.2 cm (4.0 in)	27 of 100 (Routine)
Chatillon-Sur-Seine	France	Record daily precipitation	27.7 mm (1.1 in)	27 of 100 (Routine)
Woodstock	Canada	Record low maximum temperature	3.3 C (37.9 F)	25 of 100 (Routine)
Vellore	India	Record daily precipitation	58.4 mm (2.3 in)	25 of 100 (Routine)
Haskote	India	Record daily precipitation	43.2 mm (1.7 in)	24 of 100 (Routine)
Coldwater	Canada	Record low maximum temperature	1.7 C (35.1 F)	23 of 100 (Routine)
Sable Island	Canada	Record daily precipitation	49.3 mm (1.9 in)	23 of 100 (Routine)
Tiptur	India	Record daily precipitation	54.6 mm (2.1 in)	23 of 100 (Routine)
Ljubljana Bezigrad	Slovenia	Record high maximum temperature	24.8 C (76.6 F)	23 of 100 (Routine)
Newberry	United States	Record low minimum temperature	1.1 C (34.0 F)	23 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	25.0 C (77.0 F)	22 of 100 (Routine)
Palamner	India	Record daily precipitation	57.2 mm (2.3 in)	22 of 100 (Routine)
Talbotton	United States	Record low minimum temperature	2.8 C (37.0 F)	22 of 100 (Routine)
Richfield	United States	Record low minimum temperature	-3.9 C (25.0 F)	22 of 100 (Routine)
State UNIV	United States	Record low minimum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Walhalla	United States	Record low minimum temperature	-1.1 C (30.0 F)	22 of 100 (Routine)
Waimanalo 794	United States	Record low minimum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Alice Springs Post Office	Australia	Record low maximum temperature	13.8 C (56.8 F)	21 of 100 (Routine)
Lakefield	Canada	Record low maximum temperature	2.8 C (37.0 F)	21 of 100 (Routine)
Kanakapura	India	Record daily precipitation	80.0 mm (3.1 in)	21 of 100 (Routine)
Irikkur	India	Record daily precipitation	106.7 mm (4.2 in)	21 of 100 (Routine)
Waterbury	United States	Record low maximum temperature	8.9 C (48.0 F)	21 of 100 (Routine)
Williamstown	United States	Record low maximum temperature	6.7 C (44.1 F)	21 of 100 (Routine)
Leech Lake	United States	Record low minimum temperature	-11.7 C (10.9 F)	21 of 100 (Routine)
Kosciusko	United States	Record low minimum temperature	2.8 C (37.0 F)	21 of 100 (Routine)
Georgetown 2 E	United States	Record low minimum temperature	1.7 C (35.1 F)	21 of 100 (Routine)
Kingstree	United States	Record low minimum temperature	0.6 C (33.1 F)	21 of 100 (Routine)
Point Escuminac	Canada	Record daily snowfall	4.6 cm (1.8 in)	20 of 100 (Routine)
Wolfville	Canada	Record daily snowfall	1.3 cm (0.5 in)	20 of 100 (Routine)
Kaiserslautern	Germany	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Saint John	Canada	Record daily snowfall	0.8 cm (0.3 in)	20 of 100 (Routine)
Woodstock	Canada	Record daily snowfall	3.8 cm (1.5 in)	20 of 100 (Routine)
Hay River	Canada	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Irkutsk	Russia	Record daily precipitation	4.6 mm (0.18 in)	20 of 100 (Routine)
Vardoe	Norway	Record daily precipitation	12.0 mm (0.5 in)	20 of 100 (Routine)
Mount Edgar	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Kjahta	Russia	Record daily precipitation	2.4 mm (0.09 in)	20 of 100 (Routine)
Sussex	Canada	Record daily snowfall	2.3 cm (0.9 in)	20 of 100 (Routine)
Gollhofen	Germany	Record daily precipitation	18.7 mm (0.7 in)	20 of 100 (Routine)
Badvel	India	Record daily precipitation	53.6 mm (2.1 in)	20 of 100 (Routine)
Ramnagaram	India	Record daily precipitation	58.7 mm (2.3 in)	20 of 100 (Routine)
Gauribidanur	India	Record daily precipitation	39.6 mm (1.6 in)	20 of 100 (Routine)
Nilambur	India	Record daily precipitation	91.9 mm (3.6 in)	20 of 100 (Routine)
Lares	Puerto Rico [United States]	Record high minimum temperature	23.3 C (73.9 F)	20 of 100 (Routine)
Lugano	Switzerland	Record high minimum temperature	14.8 C (58.6 F)	20 of 100 (Routine)
Talladega	United States	Record low minimum temperature	0.6 C (33.1 F)	20 of 100 (Routine)

Counts by Type and Timescale

424 records

Records set or tied on 17 October 1939 by type: Highest daily maximum 17, Lowest daily maximum 49, Highest daily minimum 21, Lowest daily minimum 248, Heaviest daily rainfall 81, Heaviest daily snowfall 8.

Records on 17 October 1939 by type
Record type	Records
Highest daily maximum	17
Lowest daily maximum	49
Highest daily minimum	21
Lowest daily minimum	248
Heaviest daily rainfall	81
Heaviest daily snowfall	8
Deepest snow cover	0

Records on 17 October 1939 by timescale: all-time 0, monthly 2, daily 422.

How Much Records Were Beaten By

336 broken records

Margins by which the 336 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.0. Ties are not counted.

Top 20 by Significance

17 October 1939

Top 20 records on 17 October 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 1939	Oxford, GB	daily rain	40.6 mm (1.6 in)	21.3 mm (0.8 in)	83 years	72 of 100 (Major)
17 October 1939	Kazan, RU	daily rain	32.6 mm (1.3 in)	25.3 mm (1.0 in)	39 years	56 of 100 (Notable)
17 October 1939	Tumkur, IN	daily rain	105.4 mm (4.1 in)	78.0 mm (3.1 in)	6 years	45 of 100 (Notable)
17 October 1939	Kolar, IN	daily rain	66.5 mm (2.6 in)	53.0 mm (2.1 in)	14 years	40 of 100 (Notable)
17 October 1939	St John's, CA	daily rain	54.9 mm (2.2 in)	33.6 mm (1.3 in)	0 years	39 of 100 (Notable)
17 October 1939	Old Halls Creek, AU	daily low max	25.3 C (77.5 F)	7.0 C (12.6 F)	24 years	38 of 100 (Notable)
17 October 1939	Chickballapur, IN	daily rain	66.0 mm (2.6 in)	41.9 mm (1.6 in)	28 years	36 of 100 (Notable)
17 October 1939	Mulbagal, IN	daily rain	97.8 mm (3.9 in)	45.2 mm (1.8 in)	20 years	35 of 100 (Notable)
17 October 1939	Bangalore, IN	daily rain	48.5 mm (1.9 in)	38.1 mm (1.5 in)	28 years	34 of 100 (Routine)
17 October 1939	Sheffield, GB	daily rain	36.3 mm (1.4 in)	11.7 mm (0.5 in)	32 years	33 of 100 (Routine)
17 October 1939	Alur, IN	daily rain	127.0 mm (5.0 in)	39.4 mm (1.6 in)	28 years	32 of 100 (Routine)
17 October 1939	Venkatagirikota, IN	daily rain	57.9 mm (2.3 in)	34.5 mm (1.4 in)	22 years	30 of 100 (Routine)
17 October 1939	Represa, US	daily high min	17.2 C (63.0 F)	3.9 C (7.0 F)	43 years	30 of 100 (Routine)
17 October 1939	Santhanpara, IN	daily rain	95.3 mm (3.8 in)	34.3 mm (1.4 in)	29 years	29 of 100 (Routine)
17 October 1939	Hay River, CA	daily snowfall	10.2 cm (4.0 in)	6.4 cm (2.5 in)	29 years	27 of 100 (Routine)
17 October 1939	Chatillon-Sur-Seine, FR	daily rain	27.7 mm (1.1 in)	10.9 mm (0.4 in)	24 years	27 of 100 (Routine)
17 October 1939	Woodstock, CA	daily low max	3.3 C (37.9 F)	3.4 C (6.1 F)	48 years	25 of 100 (Routine)
17 October 1939	Vellore, IN	daily rain	58.4 mm (2.3 in)	32.7 mm (1.3 in)	22 years	25 of 100 (Routine)
17 October 1939	Haskote, IN	daily rain	43.2 mm (1.7 in)	29.2 mm (1.1 in)	28 years	24 of 100 (Routine)
17 October 1939	Coldwater, CA	daily low max	1.7 C (35.1 F)	2.2 C (4.0 F)	52 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 424 records.

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

Records on 10-17 in each year
Year	Records
1793	1
1796	2
1808	2
1810	1
1811	1
1817	1
1820	1
1830	1
1836	1
1844	1
1845	1
1868	1
1869	2
1870	1
1872	1
1874	1
1875	1
1876	3
1877	1
1878	1
1879	7
1881	1
1882	1
1883	1
1884	2
1885	2
1886	1
1889	1
1890	3
1891	2
1892	6
1893	5
1894	2
1895	1
1897	3
1898	6
1899	3
1900	3
1901	3
1902	4
1903	9
1904	17
1905	12
1906	3
1907	16
1908	46
1909	18
1910	13
1911	24
1912	12
1913	26
1914	72
1915	7
1916	81
1917	29
1918	20
1919	34
1920	82
1921	64
1922	60
1923	149
1924	81
1925	324
1926	153
1927	163
1928	530
1929	119
1930	441
1931	431
1932	345
1933	190
1934	262
1935	337
1936	338
1937	865
1938	710
1939	424
1940	580
1941	194
1942	349
1943	1,173
1944	415
1945	289
1946	437
1947	744
1948	724
1949	442
1950	809
1951	274
1952	474
1953	463
1954	579
1955	562
1956	353
1957	245
1958	415
1959	403
1960	432
1961	525
1962	350
1963	513
1964	492
1965	920
1966	551
1967	576
1968	929
1969	714
1970	815
1971	1,053
1972	866
1973	542
1974	1,055
1975	605
1976	1,381
1977	1,060
1978	583
1979	468
1980	1,366
1981	555
1982	575
1983	526
1984	1,551
1985	585
1986	354
1987	828
1988	827
1989	1,163
1990	1,109
1991	1,352
1992	1,384
1993	1,001
1994	1,306
1995	1,076
1996	987
1997	1,114
1998	1,455
1999	815
2000	461
2001	878
2002	992
2003	764
2004	935
2005	643
2006	1,506
2007	690
2008	467
2009	1,606
2010	625
2011	734
2012	550
2013	516
2014	530
2015	843
2016	1,559
2017	743
2018	1,163
2019	504
2020	889
2021	294
2022	964
2023	544
2024	994
2025	363

Download the Data

Data for records on 1939-10-17: 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	291
10 to 20	19
20 to 30	13
30 to 40	7
40 to 50	3
50 to 60	1
60 to 70	1
70 to 80	1