Weather Records on 31 October 1939

415 weather records were set or tied worldwide on 31 October 1939. Highest significance: Fredericton Unb, CA.

Key Facts for 31 October 1939

On 31 October 1939, 415 weather records were set or tied at long-record stations worldwide.
65 were record highs and 22 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 408 daily.
Fredericton Unb set a daily record precipitation of 74.7 mm (2.9 in) on 31 October 1939.
Across 163 earlier years (1805 to 2025) the same calendar date averaged 472 records.

Record Map

415 stations

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

Weather records on 31 October 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fredericton Unb	Canada	Record daily precipitation	74.7 mm (2.9 in)	58 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	90.9 mm (3.6 in)	57 of 100 (Notable)
Concord	United States	Record daily precipitation	82.0 mm (3.2 in)	57 of 100 (Notable)
Kingston	United States	Record daily precipitation	101.6 mm (4.0 in)	55 of 100 (Notable)
New London	United States	Record daily precipitation	76.7 mm (3.0 in)	53 of 100 (Notable)
Brockton	United States	Record daily precipitation	77.5 mm (3.1 in)	53 of 100 (Notable)
Storrs	United States	Record daily precipitation	80.8 mm (3.2 in)	52 of 100 (Notable)
Worcester	United States	Record daily precipitation	74.2 mm (2.9 in)	51 of 100 (Notable)
Bathurst	Canada	Record daily precipitation	57.2 mm (2.3 in)	50 of 100 (Notable)
Durham	United States	Record daily precipitation	79.5 mm (3.1 in)	50 of 100 (Notable)
Chatham	Canada	Record daily precipitation	53.8 mm (2.1 in)	49 of 100 (Notable)
Sterling	United States	Record daily precipitation	77.5 mm (3.1 in)	49 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	50.8 mm (2.0 in)	49 of 100 (Notable)
Cape Borda Comparison	Australia	Record daily precipitation	25.7 mm (1.0 in)	48 of 100 (Notable)
Boylston	United States	Record daily precipitation	83.6 mm (3.3 in)	47 of 100 (Notable)
Houlton	United States	Record daily precipitation	70.4 mm (2.8 in)	46 of 100 (Notable)
Millinocket	United States	Record daily precipitation	61.2 mm (2.4 in)	46 of 100 (Notable)
Spot Pond	United States	Record daily precipitation	63.8 mm (2.5 in)	46 of 100 (Notable)
Athani	India	Record daily precipitation	100.3 mm (3.9 in)	44 of 100 (Notable)
Jath	India	Record daily precipitation	103.4 mm (4.1 in)	44 of 100 (Notable)
Sheringa (Lake Hamilton)	Australia	Record daily precipitation	47.2 mm (1.9 in)	43 of 100 (Notable)
Orono	United States	Record daily precipitation	67.6 mm (2.7 in)	43 of 100 (Notable)
Princeton	United States	Record daily precipitation	73.9 mm (2.9 in)	43 of 100 (Notable)
Palamner	India	Record daily precipitation	69.9 mm (2.8 in)	42 of 100 (Notable)
Lowell	United States	Record daily precipitation	56.4 mm (2.2 in)	41 of 100 (Notable)
Altastenberg	Germany	Record snow depth	22.0 cm (8.7 in)	40 of 100 (Notable)
Jefferson	United States	Record daily precipitation	80.3 mm (3.2 in)	40 of 100 (Notable)
Lawrence	United States	Record daily precipitation	61.7 mm (2.4 in)	40 of 100 (Notable)
Waterville Wwtp	United States	Record daily precipitation	49.0 mm (1.9 in)	39 of 100 (Notable)
Haverhill	United States	Record daily precipitation	46.5 mm (1.8 in)	39 of 100 (Notable)
Lake Cochituate	United States	Record daily precipitation	108.7 mm (4.3 in)	38 of 100 (Notable)
Taunton	United States	Record daily precipitation	75.7 mm (3.0 in)	38 of 100 (Notable)
Northfield	United States	Record daily precipitation	29.5 mm (1.2 in)	38 of 100 (Notable)
Woodstock	United States	Record daily precipitation	43.2 mm (1.7 in)	38 of 100 (Notable)
Kalghatgi	India	Record daily precipitation	66.0 mm (2.6 in)	37 of 100 (Notable)
Keene	United States	Record daily precipitation	46.2 mm (1.8 in)	37 of 100 (Notable)
Chestnut Hill	United States	Record daily precipitation	66.0 mm (2.6 in)	36 of 100 (Notable)
Fall River	United States	Record daily precipitation	73.2 mm (2.9 in)	36 of 100 (Notable)
Turners Falls	United States	Record daily precipitation	40.6 mm (1.6 in)	36 of 100 (Notable)
Ashland	United States	Record daily precipitation	93.2 mm (3.7 in)	35 of 100 (Notable)
Belair (Kalyra)	Australia	Record daily precipitation	27.7 mm (1.1 in)	34 of 100 (Routine)
Groton	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Franklin	United States	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
Hanover	United States	Record daily precipitation	44.7 mm (1.8 in)	34 of 100 (Routine)
Vernon	United States	Record daily precipitation	48.8 mm (1.9 in)	34 of 100 (Routine)
Framingham	United States	Record daily precipitation	92.7 mm (3.6 in)	33 of 100 (Routine)
Nebo	Australia	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Sydney	Canada	Record daily precipitation	33.8 mm (1.3 in)	32 of 100 (Routine)
Provincetown 3 NW	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Plymouth	United States	Record daily precipitation	38.4 mm (1.5 in)	32 of 100 (Routine)
Cream Hill	United States	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
North Bridgton	United States	Record daily precipitation	51.3 mm (2.0 in)	31 of 100 (Routine)
Hyannis	United States	Record daily precipitation	41.9 mm (1.6 in)	31 of 100 (Routine)
Hanover	United States	Record daily precipitation	31.8 mm (1.3 in)	31 of 100 (Routine)
Harrogate	Australia	Record daily precipitation	46.0 mm (1.8 in)	30 of 100 (Routine)
Cap Madeleine	Canada	Record daily precipitation	34.3 mm (1.4 in)	30 of 100 (Routine)
Saint John	Canada	Record daily precipitation	47.2 mm (1.9 in)	30 of 100 (Routine)
Digby	Canada	Record daily precipitation	54.6 mm (2.1 in)	30 of 100 (Routine)
Lewiston	United States	Record daily precipitation	59.2 mm (2.3 in)	30 of 100 (Routine)
Concord	United States	Record daily precipitation	42.9 mm (1.7 in)	30 of 100 (Routine)

Counts by Type and Timescale

415 records

Records set or tied on 31 October 1939 by type: Highest daily maximum 47, Lowest daily maximum 18, Highest daily minimum 18, Lowest daily minimum 4, Heaviest daily rainfall 323, Heaviest daily snowfall 4, Deepest snow cover 1.

Records on 31 October 1939 by type
Record type	Records
Highest daily maximum	47
Lowest daily maximum	18
Highest daily minimum	18
Lowest daily minimum	4
Heaviest daily rainfall	323
Heaviest daily snowfall	4
Deepest snow cover	1

Records on 31 October 1939 by timescale: all-time 0, monthly 7, daily 408.

How Much Records Were Beaten By

362 broken records

Margins by which the 362 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 120.0. Ties are not counted.

Top 20 by Significance

31 October 1939

Top 20 records on 31 October 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 October 1939	Fredericton Unb, CA	daily rain	74.7 mm (2.9 in)	46.3 mm (1.8 in)	58 years	58 of 100 (Notable)
31 October 1939	Blue Hill Coop, US	daily rain	90.9 mm (3.6 in)	55.6 mm (2.2 in)	43 years	57 of 100 (Notable)
31 October 1939	Concord, US	daily rain	82.0 mm (3.2 in)	66.0 mm (2.6 in)	44 years	57 of 100 (Notable)
31 October 1939	Kingston, US	daily rain	101.6 mm (4.0 in)	75.4 mm (3.0 in)	39 years	55 of 100 (Notable)
31 October 1939	New London, US	daily rain	76.7 mm (3.0 in)	62.7 mm (2.5 in)	32 years	53 of 100 (Notable)
31 October 1939	Brockton, US	daily rain	77.5 mm (3.1 in)	65.1 mm (2.6 in)	32 years	53 of 100 (Notable)
31 October 1939	Storrs, US	daily rain	80.8 mm (3.2 in)	53.6 mm (2.1 in)	43 years	52 of 100 (Notable)
31 October 1939	Worcester, US	daily rain	74.2 mm (2.9 in)	52.9 mm (2.1 in)	44 years	51 of 100 (Notable)
31 October 1939	Bathurst, CA	daily rain	57.2 mm (2.3 in)	30.3 mm (1.2 in)	58 years	50 of 100 (Notable)
31 October 1939	Durham, US	daily rain	79.5 mm (3.1 in)	65.8 mm (2.6 in)	20 years	50 of 100 (Notable)
31 October 1939	Chatham, CA	daily rain	53.8 mm (2.1 in)	29.2 mm (1.1 in)	58 years	49 of 100 (Notable)
31 October 1939	Sterling, US	daily rain	77.5 mm (3.1 in)	60.0 mm (2.4 in)	39 years	49 of 100 (Notable)
31 October 1939	Nashua 2 NNW, US	daily rain	50.8 mm (2.0 in)	38.4 mm (1.5 in)	39 years	49 of 100 (Notable)
31 October 1939	Cape Borda Comparison, AU	daily rain	25.7 mm (1.0 in)	15.3 mm (0.6 in)	24 years	48 of 100 (Notable)
31 October 1939	Boylston, US	daily rain	83.6 mm (3.3 in)	57.7 mm (2.3 in)	39 years	47 of 100 (Notable)
31 October 1939	Houlton, US	daily rain	70.4 mm (2.8 in)	44.2 mm (1.7 in)	20 years	46 of 100 (Notable)
31 October 1939	Millinocket, US	daily rain	61.2 mm (2.4 in)	45.7 mm (1.8 in)	20 years	46 of 100 (Notable)
31 October 1939	Spot Pond, US	daily rain	63.8 mm (2.5 in)	51.6 mm (2.0 in)	12 years	46 of 100 (Notable)
31 October 1939	Athani, IN	daily rain	100.3 mm (3.9 in)	66.5 mm (2.6 in)	4 years	44 of 100 (Notable)
31 October 1939	Jath, IN	daily rain	103.4 mm (4.1 in)	67.3 mm (2.6 in)	4 years	44 of 100 (Notable)

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 415 records.

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

Records on 10-31 in each year
Year	Records
1805	1
1811	2
1828	1
1836	1
1838	1
1839	1
1841	1
1845	1
1847	2
1848	1
1852	2
1856	1
1865	1
1868	1
1869	3
1873	2
1875	2
1876	1
1877	1
1878	1
1879	1
1880	1
1881	6
1883	1
1884	3
1886	1
1887	2
1888	3
1889	5
1891	3
1892	4
1893	3
1894	5
1895	4
1896	10
1897	1
1898	5
1899	4
1900	5
1901	4
1902	5
1903	5
1904	7
1905	21
1906	38
1907	22
1908	13
1909	15
1910	18
1911	32
1912	14
1913	39
1914	33
1915	11
1916	72
1917	67
1918	72
1919	112
1920	63
1921	22
1922	72
1923	359
1924	244
1925	405
1926	153
1927	183
1928	120
1929	234
1930	240
1931	178
1932	260
1933	796
1934	410
1935	981
1936	307
1937	335
1938	399
1939	415
1940	248
1941	536
1942	578
1943	213
1944	611
1945	287
1946	530
1947	371
1948	695
1949	831
1950	1,237
1951	527
1952	393
1953	303
1954	460
1955	427
1956	1,086
1957	392
1958	314
1959	484
1960	296
1961	511
1962	344
1963	631
1964	538
1965	340
1966	630
1967	748
1968	605
1969	531
1970	412
1971	992
1972	1,234
1973	581
1974	1,192
1975	827
1976	655
1977	616
1978	538
1979	1,130
1980	657
1981	497
1982	560
1983	782
1984	1,054
1985	632
1986	396
1987	1,002
1988	1,058
1989	857
1990	990
1991	3,294
1992	1,324
1993	2,926
1994	1,004
1995	1,051
1996	1,074
1997	1,553
1998	1,410
1999	997
2000	1,114
2001	1,218
2002	1,613
2003	1,167
2004	870
2005	1,048
2006	842
2007	613
2008	1,256
2009	1,030
2010	931
2011	746
2012	884
2013	623
2014	547
2015	691
2016	1,012
2017	437
2018	414
2019	2,501
2020	542
2021	469
2022	497
2023	960
2024	1,133
2025	314

Download the Data

Data for records on 1939-10-31: 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	293
20 to 40	44
40 to 60	15
60 to 80	9
80 to 100	0
100 to 120	1