Weather Records on 20 October 1937

189 weather records were set or tied worldwide on 20 October 1937. Highest significance: Portage Wwtp, US.

Key Facts for 20 October 1937

On 20 October 1937, 189 weather records were set or tied at long-record stations worldwide.
83 were record highs and 10 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 181 daily.
Portage Wwtp set a monthly record daily precipitation of 81.0 mm (3.2 in) on 20 October 1937.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 459 records.

Record Map

189 stations

189 station records on 20 October 1937 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 1937: highest significance records shown on the map
Station	Country	Type	Value	Significance
Portage Wwtp	United States	Record daily precipitation	81.0 mm (3.2 in)	56 of 100 (Notable)
Concord	United States	Record daily precipitation	59.4 mm (2.3 in)	52 of 100 (Notable)
Cream Hill	United States	Record daily precipitation	84.3 mm (3.3 in)	48 of 100 (Notable)
Chelsea	United States	Record daily precipitation	64.5 mm (2.5 in)	48 of 100 (Notable)
Ishpeming	United States	Record daily precipitation	54.4 mm (2.1 in)	44 of 100 (Notable)
Sherbrooke	Canada	Record daily precipitation	89.7 mm (3.5 in)	43 of 100 (Notable)
Grand River Lock	United States	Record daily precipitation	68.6 mm (2.7 in)	43 of 100 (Notable)
Cavendish	United States	Record daily precipitation	76.7 mm (3.0 in)	41 of 100 (Notable)
Scarsdale	United States	Record daily precipitation	81.3 mm (3.2 in)	40 of 100 (Notable)
Mather 3 NW	United States	Record daily precipitation	57.9 mm (2.3 in)	39 of 100 (Notable)
Hanover	United States	Record daily precipitation	57.7 mm (2.3 in)	38 of 100 (Notable)
Woodstock	United States	Record daily precipitation	69.3 mm (2.7 in)	37 of 100 (Notable)
Winston Salem Reynolds AP	United States	Record daily precipitation	61.5 mm (2.4 in)	32 of 100 (Routine)
Lowell	United States	Record daily precipitation	57.7 mm (2.3 in)	31 of 100 (Routine)
Lexington	United States	Record daily precipitation	48.0 mm (1.9 in)	31 of 100 (Routine)
Georgetown Post Office	Australia	Record low minimum temperature	9.2 C (48.6 F)	30 of 100 (Routine)
Storrs	United States	Record daily precipitation	66.0 mm (2.6 in)	30 of 100 (Routine)
Northfield	United States	Record daily precipitation	42.4 mm (1.7 in)	29 of 100 (Routine)
Quebec	Canada	Record high maximum temperature	21.7 C (71.1 F)	28 of 100 (Routine)
Brome	Canada	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Bridgeport	United States	Record daily precipitation	70.4 mm (2.8 in)	28 of 100 (Routine)
Rocky Mt	United States	Record daily precipitation	65.0 mm (2.6 in)	28 of 100 (Routine)
Portage Wwtp	United States	Record daily snowfall	6.4 cm (2.5 in)	28 of 100 (Routine)
Quebec	Canada	Record daily precipitation	41.4 mm (1.6 in)	27 of 100 (Routine)
Concord	United States	Record daily precipitation	42.7 mm (1.7 in)	27 of 100 (Routine)
Ironwood	United States	Record daily precipitation	52.1 mm (2.1 in)	27 of 100 (Routine)
Bedford Hills	United States	Record daily precipitation	74.9 mm (2.9 in)	27 of 100 (Routine)
Enosburg Falls	United States	Record daily precipitation	46.2 mm (1.8 in)	27 of 100 (Routine)
Clayoquot	Canada	Record high minimum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Greensboro	United States	Record daily precipitation	55.6 mm (2.2 in)	26 of 100 (Routine)
Randolph 5 NNE	United States	Record daily precipitation	47.5 mm (1.9 in)	26 of 100 (Routine)
Darlington Wwtp	United States	Record daily precipitation	53.3 mm (2.1 in)	25 of 100 (Routine)
Stevens Pt	United States	Record daily precipitation	30.2 mm (1.2 in)	25 of 100 (Routine)
Viroqua	United States	Record daily precipitation	38.6 mm (1.5 in)	25 of 100 (Routine)
Kohala 179.1	United States	Record high maximum temperature	31.7 C (89.1 F)	25 of 100 (Routine)
Portland	United States	Record daily precipitation	36.3 mm (1.4 in)	24 of 100 (Routine)
Iron Mtn-Kingsford Wwtp	United States	Record daily precipitation	38.1 mm (1.5 in)	24 of 100 (Routine)
Columbia 2SSE	United States	Record daily precipitation	47.0 mm (1.9 in)	24 of 100 (Routine)
Calumet	United States	Record daily precipitation	45.7 mm (1.8 in)	23 of 100 (Routine)
Keene	United States	Record daily precipitation	49.3 mm (1.9 in)	23 of 100 (Routine)
Eastman 1 W	United States	Record daily precipitation	38.6 mm (1.5 in)	22 of 100 (Routine)
Rumford	United States	Record daily precipitation	66.3 mm (2.6 in)	22 of 100 (Routine)
Hancock Exp Farm	United States	Record daily precipitation	63.5 mm (2.5 in)	22 of 100 (Routine)
Staunton Wtp	United States	Record daily precipitation	37.3 mm (1.5 in)	21 of 100 (Routine)
Hatton 9 SE	United States	Record high minimum temperature	11.7 C (53.1 F)	21 of 100 (Routine)
Chicoutimi	Canada	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Mackinac Island	United States	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Medford	United States	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Spot Pond	United States	Record daily precipitation	47.5 mm (1.9 in)	20 of 100 (Routine)
Williamstown	United States	Record daily precipitation	47.0 mm (1.9 in)	20 of 100 (Routine)
Winchendon	United States	Record daily precipitation	35.1 mm (1.4 in)	20 of 100 (Routine)
Nashua 2 NNW	United States	Record daily precipitation	49.3 mm (1.9 in)	20 of 100 (Routine)
Boonton 1 SE	United States	Record daily precipitation	44.5 mm (1.8 in)	20 of 100 (Routine)
Charlotteburg Rsvr	United States	Record daily precipitation	45.5 mm (1.8 in)	20 of 100 (Routine)
Buchanan	United States	Record daily precipitation	48.8 mm (1.9 in)	20 of 100 (Routine)
Portage Wwtp	United States	Record snow depth	2.5 cm (1.0 in)	20 of 100 (Routine)
Bancroft	Canada	Record daily precipitation	20.8 mm (0.8 in)	19 of 100 (Routine)
Nalia	India	Record daily precipitation	6.4 mm (0.25 in)	19 of 100 (Routine)
Plymouth	United States	Record daily precipitation	42.9 mm (1.7 in)	19 of 100 (Routine)
Ringarooma (Charles Street)	Australia	Record daily precipitation	39.4 mm (1.6 in)	18 of 100 (Routine)

Counts by Type and Timescale

189 records

Records set or tied on 20 October 1937 by type: Highest daily maximum 21, Lowest daily maximum 2, Highest daily minimum 62, Lowest daily minimum 8, Heaviest daily rainfall 93, Heaviest daily snowfall 2, Deepest snow cover 1.

Records on 20 October 1937 by type
Record type	Records
Highest daily maximum	21
Lowest daily maximum	2
Highest daily minimum	62
Lowest daily minimum	8
Heaviest daily rainfall	93
Heaviest daily snowfall	2
Deepest snow cover	1

Records on 20 October 1937 by timescale: all-time 1, monthly 7, daily 181.

How Much Records Were Beaten By

161 broken records

Margins by which the 161 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 64.0. Ties are not counted.

Top 20 by Significance

20 October 1937

Top 20 records on 20 October 1937 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 1937	Portage Wwtp, US	monthly rain	81.0 mm (3.2 in)	33.8 mm (1.3 in)	16 years	56 of 100 (Notable)
20 October 1937	Concord, US	daily rain	59.4 mm (2.3 in)	30.7 mm (1.2 in)	66 years	52 of 100 (Notable)
20 October 1937	Cream Hill, US	daily rain	84.3 mm (3.3 in)	57.6 mm (2.3 in)	16 years	48 of 100 (Notable)
20 October 1937	Chelsea, US	daily rain	64.5 mm (2.5 in)	37.3 mm (1.5 in)	31 years	48 of 100 (Notable)
20 October 1937	Ishpeming, US	daily rain	54.4 mm (2.1 in)	44.2 mm (1.7 in)	3 years	44 of 100 (Notable)
20 October 1937	Sherbrooke, CA	all-time rain	89.7 mm (3.5 in)	9.7 mm (0.38 in)	25 years	43 of 100 (Notable)
20 October 1937	Grand River Lock, US	monthly rain	68.6 mm (2.7 in)	17.8 mm (0.7 in)	33 years	43 of 100 (Notable)
20 October 1937	Cavendish, US	daily rain	76.7 mm (3.0 in)	39.1 mm (1.5 in)	24 years	41 of 100 (Notable)
20 October 1937	Scarsdale, US	daily rain	81.3 mm (3.2 in)	43.2 mm (1.7 in)	32 years	40 of 100 (Notable)
20 October 1937	Mather 3 NW, US	daily rain	57.9 mm (2.3 in)	32.8 mm (1.3 in)	3 years	39 of 100 (Notable)
20 October 1937	Hanover, US	daily rain	57.7 mm (2.3 in)	28.2 mm (1.1 in)	10 years	38 of 100 (Notable)
20 October 1937	Woodstock, US	daily rain	69.3 mm (2.7 in)	38.3 mm (1.5 in)	10 years	37 of 100 (Notable)
20 October 1937	Winston Salem Reynolds AP, US	daily rain	61.5 mm (2.4 in)	39.9 mm (1.6 in)	24 years	32 of 100 (Routine)
20 October 1937	Lowell, US	daily rain	57.7 mm (2.3 in)	33.1 mm (1.3 in)	24 years	31 of 100 (Routine)
20 October 1937	Lexington, US	daily rain	48.0 mm (1.9 in)	26.9 mm (1.1 in)	39 years	31 of 100 (Routine)
20 October 1937	Georgetown Post Office, AU	daily low min	9.2 C (48.6 F)	5.3 C (9.5 F)	32 years	30 of 100 (Routine)
20 October 1937	Storrs, US	daily rain	66.0 mm (2.6 in)	27.9 mm (1.1 in)	24 years	30 of 100 (Routine)
20 October 1937	Northfield, US	daily rain	42.4 mm (1.7 in)	12.9 mm (0.5 in)	31 years	29 of 100 (Routine)
20 October 1937	Quebec, CA	daily high max	21.7 C (71.1 F)	3.4 C (6.1 F)	52 years	28 of 100 (Routine)
20 October 1937	Brome, CA	daily rain	35.8 mm (1.4 in)	17.0 mm (0.7 in)	16 years	28 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

1806 to 1937

Records set or tied on this calendar date in each year from 1806 to 1937. 1937 had 189 records.

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

Records on 10-20 in each year
Year	Records
1806	1
1835	1
1844	1
1846	1
1847	2
1851	1
1852	1
1858	1
1863	2
1864	2
1866	3
1867	1
1868	2
1872	2
1874	2
1875	3
1876	2
1877	1
1878	1
1880	3
1881	2
1884	1
1885	1
1886	1
1887	1
1888	6
1891	4
1892	4
1893	1
1894	3
1895	4
1896	9
1897	2
1898	7
1899	1
1900	8
1901	7
1902	5
1903	9
1904	13
1905	22
1906	28
1907	32
1908	26
1909	17
1910	31
1911	16
1912	6
1913	38
1914	16
1915	20
1916	72
1917	201
1918	34
1919	19
1920	81
1921	68
1922	83
1923	96
1924	182
1925	247
1926	147
1927	283
1928	92
1929	129
1930	672
1931	125
1932	331
1933	675
1934	422
1935	390
1936	370
1937	189
1938	231
1939	367
1940	757
1941	459
1942	152
1943	501
1944	288
1945	363
1946	310
1947	1,494
1948	320
1949	1,084
1950	619
1951	279
1952	520
1953	1,057
1954	262
1955	529
1956	283
1957	440
1958	461
1959	451
1960	671
1961	479
1962	733
1963	765
1964	598
1965	340
1966	857
1967	511
1968	244
1969	607
1970	710
1971	606
1972	1,724
1973	878
1974	1,122
1975	587
1976	1,304
1977	467
1978	508
1979	1,647
1980	350
1981	1,083
1982	1,191
1983	944
1984	1,562
1985	835
1986	823
1987	590
1988	737
1989	2,092
1990	609
1991	971
1992	1,174
1993	1,238
1994	650
1995	703
1996	1,417
1997	949
1998	683
1999	603
2000	737
2001	589
2002	985
2003	1,761
2004	1,861
2005	1,092
2006	1,170
2007	923
2008	477
2009	786
2010	539
2011	785
2012	945
2013	592
2014	851
2015	523
2016	947
2017	602
2018	394
2019	744
2020	1,010
2021	900
2022	834
2023	1,468
2024	707
2025	326

Download the Data

Data for records on 1937-10-20: 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	113
10 to 20	24
20 to 30	11
30 to 40	9
40 to 50	2
50 to 60	1
60 to 70	1