Weather Records on 21 October 1931

217 weather records were set or tied worldwide on 21 October 1931. Highest significance: Hafslo, NO.

Key Facts for 21 October 1931

On 21 October 1931, 217 weather records were set or tied at long-record stations worldwide.
91 were record highs and 19 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 213 daily.
Hafslo set a daily record snow depth of 20.0 cm (7.9 in) on 21 October 1931.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 421 records.

Record Map

217 stations

217 station records on 21 October 1931 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1931: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hafslo	Norway	Record snow depth	20.0 cm (7.9 in)	37 of 100 (Notable)
Charters Towers Post Office	Australia	Record low maximum temperature	21.9 C (71.4 F)	36 of 100 (Notable)
Spearfish	United States	Record daily precipitation	34.3 mm (1.4 in)	36 of 100 (Notable)
Iguape	Brazil	Record daily precipitation	45.0 mm (1.8 in)	35 of 100 (Notable)
Marlow 1 WSW	United States	Record daily precipitation	61.0 mm (2.4 in)	34 of 100 (Routine)
Dewan	India	Record daily precipitation	60.7 mm (2.4 in)	33 of 100 (Routine)
Shiggaon	India	Record daily precipitation	57.7 mm (2.3 in)	32 of 100 (Routine)
Harapanahalli	India	Record daily precipitation	66.8 mm (2.6 in)	30 of 100 (Routine)
Kangayam	India	Record daily precipitation	63.5 mm (2.5 in)	30 of 100 (Routine)
Narsaraopet	India	Record daily precipitation	63.5 mm (2.5 in)	27 of 100 (Routine)
Balfes Creek Post Office	Australia	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Crosbyton	United States	Record daily precipitation	36.1 mm (1.4 in)	26 of 100 (Routine)
Newport	United States	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Galway	Ireland	Record low minimum temperature	-6.1 C (21.0 F)	25 of 100 (Routine)
Armour	United States	Record daily precipitation	40.1 mm (1.6 in)	25 of 100 (Routine)
Glenwood Spgs #2	United States	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Nandigama	India	Record daily precipitation	38.9 mm (1.5 in)	23 of 100 (Routine)
Norddal	Norway	Record daily precipitation	38.5 mm (1.5 in)	23 of 100 (Routine)
Jamestown State Hosp	United States	Record high minimum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Burdekin Shire Council	Australia	Record low maximum temperature	23.9 C (75.0 F)	22 of 100 (Routine)
Wahpeton 3 N	United States	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Aberdeen	United States	Record daily precipitation	41.7 mm (1.6 in)	22 of 100 (Routine)
Atlantic City Marina	United States	Record high maximum temperature	23.9 C (75.0 F)	22 of 100 (Routine)
Darwin Post Office	Australia	Record low maximum temperature	30.1 C (86.2 F)	21 of 100 (Routine)
Cobar Post Office	Australia	Record low minimum temperature	3.3 C (37.9 F)	21 of 100 (Routine)
Teriberka	Russia	Record daily precipitation	13.4 mm (0.5 in)	20 of 100 (Routine)
Treherne	Canada	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Sorve	Estonia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Holly	United States	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Kola-In-Murman	Russia	Record daily precipitation	13.9 mm (0.5 in)	20 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Mount McConnell	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Poretskoye	Russia	Record daily precipitation	10.0 mm (0.4 in)	20 of 100 (Routine)
Collbran	United States	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Old Halls Creek	Australia	Record low maximum temperature	28.3 C (82.9 F)	20 of 100 (Routine)
Townsville Pilot Station	Australia	Record daily precipitation	8.4 mm (0.33 in)	20 of 100 (Routine)
Kennebec	United States	Record high minimum temperature	13.9 C (57.0 F)	20 of 100 (Routine)
Levan	United States	Record high minimum temperature	7.8 C (46.0 F)	20 of 100 (Routine)
Mirani Post Office	Australia	Record daily precipitation	24.4 mm (1.0 in)	19 of 100 (Routine)
Kirensk	Russia	Record high minimum temperature	5.0 C (41.0 F)	19 of 100 (Routine)
Meeker 5 W	United States	Record daily precipitation	35.6 mm (1.4 in)	19 of 100 (Routine)
Asheville	United States	Record high maximum temperature	26.7 C (80.1 F)	19 of 100 (Routine)
Huron Rgnl AP	United States	Record daily precipitation	14.0 mm (0.6 in)	19 of 100 (Routine)
Scottsbluff W B Heilig Fld AP	United States	Record daily precipitation	8.6 mm (0.34 in)	19 of 100 (Routine)
Nebo	Australia	Record daily precipitation	8.9 mm (0.35 in)	18 of 100 (Routine)
Ravenswood Post Office	Australia	Record daily precipitation	1.5 mm (0.06 in)	18 of 100 (Routine)
Brandon Cda	Canada	Record high minimum temperature	7.2 C (45.0 F)	18 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record high minimum temperature	7.8 C (46.0 F)	18 of 100 (Routine)
Highlands	United States	Record high maximum temperature	26.7 C (80.1 F)	18 of 100 (Routine)
Grand Forks UNIV (NWS)	United States	Record high minimum temperature	8.3 C (46.9 F)	18 of 100 (Routine)
Norman 3SSE	United States	Record daily precipitation	35.6 mm (1.4 in)	18 of 100 (Routine)
Murfreesboro 5 N	United States	Record high maximum temperature	27.8 C (82.0 F)	18 of 100 (Routine)
Farmington	United States	Record high minimum temperature	8.9 C (48.0 F)	18 of 100 (Routine)
Frome Downs	Australia	Record daily precipitation	15.2 mm (0.6 in)	17 of 100 (Routine)
Inkerman Station	Australia	Record daily precipitation	20.6 mm (0.8 in)	17 of 100 (Routine)
Kampli	India	Record daily precipitation	38.1 mm (1.5 in)	17 of 100 (Routine)
Kalghatgi	India	Record daily precipitation	24.1 mm (0.9 in)	17 of 100 (Routine)
Shimoga	India	Record daily precipitation	15.2 mm (0.6 in)	17 of 100 (Routine)
Vashon Island	United States	Record daily precipitation	26.4 mm (1.0 in)	17 of 100 (Routine)
Willapa Harbor	United States	Record daily precipitation	50.8 mm (2.0 in)	17 of 100 (Routine)

Counts by Type and Timescale

217 records

Records set or tied on 21 October 1931 by type: Highest daily maximum 39, Lowest daily maximum 11, Highest daily minimum 52, Lowest daily minimum 8, Heaviest daily rainfall 102, Deepest snow cover 5.

Records on 21 October 1931 by type
Record type	Records
Highest daily maximum	39
Lowest daily maximum	11
Highest daily minimum	52
Lowest daily minimum	8
Heaviest daily rainfall	102
Heaviest daily snowfall	0
Deepest snow cover	5

Records on 21 October 1931 by timescale: all-time 0, monthly 4, daily 213.

How Much Records Were Beaten By

183 broken records

Margins by which the 183 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 180.0. Ties are not counted.

Top 20 by Significance

21 October 1931

Top 20 records on 21 October 1931 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1931	Hafslo, NO	daily snow depth	20.0 cm (7.9 in)	18.0 cm (7.1 in)	25 years	37 of 100 (Notable)
21 October 1931	Charters Towers Post Office, AU	daily low max	21.9 C (71.4 F)	7.8 C (14.0 F)	17 years	36 of 100 (Notable)
21 October 1931	Spearfish, US	daily rain	34.3 mm (1.4 in)	30.2 mm (1.2 in)	8 years	36 of 100 (Notable)
21 October 1931	Iguape, BR	daily rain	45.0 mm (1.8 in)	26.4 mm (1.0 in)	20 years	35 of 100 (Notable)
21 October 1931	Marlow 1 WSW, US	daily rain	61.0 mm (2.4 in)	42.5 mm (1.7 in)	30 years	34 of 100 (Routine)
21 October 1931	Dewan, IN	daily rain	60.7 mm (2.4 in)	50.5 mm (2.0 in)	25 years	33 of 100 (Routine)
21 October 1931	Shiggaon, IN	daily rain	57.7 mm (2.3 in)	43.0 mm (1.7 in)	2 years	32 of 100 (Routine)
21 October 1931	Harapanahalli, IN	daily rain	66.8 mm (2.6 in)	47.0 mm (1.9 in)	2 years	30 of 100 (Routine)
21 October 1931	Kangayam, IN	daily rain	63.5 mm (2.5 in)	36.8 mm (1.4 in)	29 years	30 of 100 (Routine)
21 October 1931	Narsaraopet, IN	daily rain	63.5 mm (2.5 in)	41.1 mm (1.6 in)	13 years	27 of 100 (Routine)
21 October 1931	Balfes Creek Post Office, AU	daily rain	26.7 mm (1.1 in)	18.6 mm (0.7 in)	26 years	26 of 100 (Routine)
21 October 1931	Crosbyton, US	daily rain	36.1 mm (1.4 in)	28.7 mm (1.1 in)	20 years	26 of 100 (Routine)
21 October 1931	Newport, US	daily rain	30.5 mm (1.2 in)	15.3 mm (0.6 in)	33 years	26 of 100 (Routine)
21 October 1931	Galway, IE	monthly low min	-6.1 C (21.0 F)	1.1 C (2.0 F)	17 years	25 of 100 (Routine)
21 October 1931	Armour, US	daily rain	40.1 mm (1.6 in)	14.7 mm (0.6 in)	30 years	25 of 100 (Routine)
21 October 1931	Glenwood Spgs #2, US	monthly rain	30.5 mm (1.2 in)	5.1 mm (0.20 in)	2 years	24 of 100 (Routine)
21 October 1931	Nandigama, IN	daily rain	38.9 mm (1.5 in)	31.8 mm (1.3 in)	20 years	23 of 100 (Routine)
21 October 1931	Norddal, NO	daily rain	38.5 mm (1.5 in)	15.5 mm (0.6 in)	9 years	23 of 100 (Routine)
21 October 1931	Jamestown State Hosp, US	daily high min	8.9 C (48.0 F)	5.6 C (10.1 F)	29 years	23 of 100 (Routine)
21 October 1931	Burdekin Shire Council, AU	monthly low max	23.9 C (75.0 F)	0.5 C (0.9 F)	21 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

1795 to 1931

Records set or tied on this calendar date in each year from 1795 to 1931. 1931 had 217 records.

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

Records on 10-21 in each year
Year	Records
1795	1
1802	2
1805	1
1808	1
1810	1
1834	1
1835	1
1840	1
1845	1
1847	1
1850	1
1851	2
1854	1
1859	1
1863	1
1864	1
1866	3
1867	1
1868	3
1869	2
1871	1
1872	1
1873	1
1874	1
1876	4
1877	2
1878	1
1880	3
1881	1
1883	1
1886	1
1888	2
1889	2
1890	3
1891	6
1892	6
1893	1
1894	1
1895	2
1896	5
1898	6
1899	3
1900	2
1901	9
1902	2
1903	3
1904	30
1905	15
1906	11
1907	35
1908	35
1909	19
1910	21
1911	10
1912	18
1913	59
1914	35
1915	43
1916	70
1917	208
1918	18
1919	102
1920	149
1921	58
1922	78
1923	81
1924	389
1925	150
1926	77
1927	187
1928	78
1929	200
1930	492
1931	217
1932	165
1933	733
1934	407
1935	707
1936	407
1937	132
1938	121
1939	491
1940	537
1941	644
1942	258
1943	421
1944	367
1945	538
1946	297
1947	977
1948	266
1949	1,015
1950	438
1951	382
1952	848
1953	1,579
1954	279
1955	481
1956	276
1957	511
1958	322
1959	410
1960	408
1961	553
1962	359
1963	725
1964	457
1965	465
1966	425
1967	472
1968	174
1969	881
1970	548
1971	498
1972	813
1973	464
1974	866
1975	509
1976	1,467
1977	451
1978	616
1979	1,958
1980	378
1981	667
1982	870
1983	786
1984	1,872
1985	776
1986	814
1987	852
1988	696
1989	1,668
1990	807
1991	877
1992	1,095
1993	845
1994	670
1995	1,120
1996	1,581
1997	915
1998	711
1999	688
2000	771
2001	610
2002	1,241
2003	2,066
2004	1,674
2005	949
2006	1,057
2007	916
2008	610
2009	713
2010	710
2011	662
2012	703
2013	440
2014	716
2015	493
2016	734
2017	750
2018	440
2019	757
2020	1,135
2021	574
2022	629
2023	890
2024	1,138
2025	364

Download the Data

Data for records on 1931-10-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 25	171
25 to 50	10
50 to 75	1
75 to 100	0
100 to 125	0
125 to 150	0
150 to 175	0
175 to 200	1