Weather Records on 31 October 1973

581 weather records were set or tied worldwide on 31 October 1973. Highest significance: Arlington, US.

Key Facts for 31 October 1973

On 31 October 1973, 581 weather records were set or tied at long-record stations worldwide.
89 were record highs and 38 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 25 monthly and 553 daily.
Arlington set a daily record precipitation of 26.2 mm (1.0 in) on 31 October 1973.
Across 163 earlier years (1805 to 2025) the same calendar date averaged 471 records.

Record Map

581 stations

581 station records on 31 October 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 October 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Arlington	United States	Record daily precipitation	26.2 mm (1.0 in)	61 of 100 (Major)
Santa Rita Do Jacutinga	Brazil	Record daily precipitation	157.4 mm (6.2 in)	55 of 100 (Notable)
Kamiah	United States	Record daily precipitation	32.5 mm (1.3 in)	54 of 100 (Notable)
Crandall Creek	United States	Record daily snowfall	25.4 cm (10.0 in)	54 of 100 (Notable)
Terowie (Parnaroo Sect 50)	Australia	Record daily precipitation	38.1 mm (1.5 in)	52 of 100 (Notable)
Itamarati-SE	Brazil	Record daily precipitation	69.6 mm (2.7 in)	52 of 100 (Notable)
Bom Jardim de Minas	Brazil	Record daily precipitation	150.0 mm (5.9 in)	51 of 100 (Notable)
Wilcannia (Burndoo Estate)	Australia	Record daily precipitation	25.1 mm (1.0 in)	50 of 100 (Notable)
Conceicao Do Rio Verde	Brazil	Record daily precipitation	112.2 mm (4.4 in)	48 of 100 (Notable)
Areal (Granja Gabi)	Brazil	Record daily precipitation	74.0 mm (2.9 in)	48 of 100 (Notable)
Walla Walla WSO City	United States	Record daily precipitation	26.2 mm (1.0 in)	47 of 100 (Notable)
Baependi	Brazil	Record daily precipitation	104.4 mm (4.1 in)	46 of 100 (Notable)
Usina Do Chicao	Brazil	Record daily precipitation	66.2 mm (2.6 in)	46 of 100 (Notable)
Usina Amalia	Brazil	Record daily precipitation	80.2 mm (3.2 in)	46 of 100 (Notable)
Ungowa Forest Station	Australia	Record daily precipitation	50.3 mm (2.0 in)	44 of 100 (Notable)
Charqueada	Brazil	Record daily precipitation	64.2 mm (2.5 in)	44 of 100 (Notable)
Grapevine Dam	United States	Record daily precipitation	56.9 mm (2.2 in)	44 of 100 (Notable)
Kahuku 912	United States	Record daily precipitation	94.0 mm (3.7 in)	44 of 100 (Notable)
Indiana (Cima)	Brazil	Record daily precipitation	79.5 mm (3.1 in)	43 of 100 (Notable)
St Andrews	Canada	Record high minimum temperature	11.7 C (53.1 F)	43 of 100 (Notable)
Denton	United States	Record daily snowfall	8.9 cm (3.5 in)	42 of 100 (Notable)
Kooskia	United States	Record daily precipitation	33.5 mm (1.3 in)	41 of 100 (Notable)
Hobson	United States	Record daily snowfall	20.3 cm (8.0 in)	41 of 100 (Notable)
Butte Bert Mooney AP	United States	Record daily snowfall	32.5 cm (12.8 in)	41 of 100 (Notable)
Usina Esmeril (Cpfl) B4-005	Brazil	Record daily precipitation	68.0 mm (2.7 in)	40 of 100 (Notable)
Amvrosiivka	Ukraine	Record daily precipitation	30.2 mm (1.2 in)	39 of 100 (Notable)
Hagansport	United States	Record daily precipitation	74.2 mm (2.9 in)	39 of 100 (Notable)
Ponte Do Costa	Brazil	Record daily precipitation	60.2 mm (2.4 in)	38 of 100 (Notable)
Angatuba	Brazil	Record daily precipitation	73.3 mm (2.9 in)	38 of 100 (Notable)
Deloraine	Canada	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Hamilton	United States	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Wells	United States	Record high minimum temperature	7.8 C (46.0 F)	38 of 100 (Notable)
Clarksville 2NE	United States	Record daily precipitation	82.8 mm (3.3 in)	38 of 100 (Notable)
Edenville (Mun)	South Africa	Record daily precipitation	61.5 mm (2.4 in)	37 of 100 (Notable)
Waxahachie	United States	Record daily precipitation	55.9 mm (2.2 in)	37 of 100 (Notable)
Strasbourg	Canada	Record daily snowfall	15.2 cm (6.0 in)	36 of 100 (Notable)
Calvillo (Smn)	Mexico	Record daily precipitation	74.7 mm (2.9 in)	36 of 100 (Notable)
Grangeville	United States	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Terrell	United States	Record daily precipitation	91.4 mm (3.6 in)	36 of 100 (Notable)
Piracicaba	Brazil	Record daily precipitation	50.0 mm (2.0 in)	35 of 100 (Notable)
Igarapava	Brazil	Record daily precipitation	63.3 mm (2.5 in)	35 of 100 (Notable)
Ourinhos	Brazil	Record daily precipitation	82.3 mm (3.2 in)	35 of 100 (Notable)
Wesselsbron (Mun)	South Africa	Record daily precipitation	39.5 mm (1.6 in)	35 of 100 (Notable)
Pullman 2 NW	United States	Record daily snowfall	15.2 cm (6.0 in)	35 of 100 (Notable)
Arkadelphia 2 N	United States	Record daily precipitation	72.1 mm (2.8 in)	34 of 100 (Routine)
Deland 1 SSE	United States	Record low minimum temperature	2.2 C (36.0 F)	34 of 100 (Routine)
Beulah	United States	Record high minimum temperature	8.9 C (48.0 F)	34 of 100 (Routine)
Lake Keechelus	United States	Record daily snowfall	17.8 cm (7.0 in)	34 of 100 (Routine)
Lake Keechelus	United States	Record snow depth	17.8 cm (7.0 in)	34 of 100 (Routine)
Alta 1 NNW	United States	Record daily snowfall	15.2 cm (6.0 in)	34 of 100 (Routine)
Olimpia	Brazil	Record daily precipitation	71.3 mm (2.8 in)	33 of 100 (Routine)
Leavenworth 3 S	United States	Record daily snowfall	5.1 cm (2.0 in)	33 of 100 (Routine)
Eagle FAA AP	United States	Record high minimum temperature	2.8 C (37.0 F)	33 of 100 (Routine)
Taldra	Australia	Record daily precipitation	38.9 mm (1.5 in)	32 of 100 (Routine)
Breona	Australia	Record daily precipitation	68.1 mm (2.7 in)	31 of 100 (Routine)
Caxambu	Brazil	Record daily precipitation	63.0 mm (2.5 in)	31 of 100 (Routine)
Gravelbourg	Canada	Record daily snowfall	7.1 cm (2.8 in)	31 of 100 (Routine)
Hollowaysrust	South Africa	Record daily precipitation	53.0 mm (2.1 in)	31 of 100 (Routine)
Snoqualmie Falls	United States	Record low maximum temperature	6.1 C (43.0 F)	31 of 100 (Routine)
Ribeirao de Sao Joaquim	Brazil	Record daily precipitation	88.6 mm (3.5 in)	30 of 100 (Routine)

Counts by Type and Timescale

581 records

Records set or tied on 31 October 1973 by type: Highest daily maximum 18, Lowest daily maximum 10, Highest daily minimum 71, Lowest daily minimum 28, Heaviest daily rainfall 405, Heaviest daily snowfall 45, Deepest snow cover 4.

Records on 31 October 1973 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	10
Highest daily minimum	71
Lowest daily minimum	28
Heaviest daily rainfall	405
Heaviest daily snowfall	45
Deepest snow cover	4

Records on 31 October 1973 by timescale: all-time 3, monthly 25, daily 553.

How Much Records Were Beaten By

540 broken records

Margins by which the 540 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

31 October 1973

Top 20 records on 31 October 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 October 1973	Arlington, US	daily rain	26.2 mm (1.0 in)	20.6 mm (0.8 in)	44 years	61 of 100 (Major)
31 October 1973	Santa Rita Do Jacutinga, BR	all-time rain	157.4 mm (6.2 in)	28.6 mm (1.1 in)	27 years	55 of 100 (Notable)
31 October 1973	Kamiah, US	daily rain	32.5 mm (1.3 in)	24.9 mm (1.0 in)	28 years	54 of 100 (Notable)
31 October 1973	Crandall Creek, US	daily snowfall	25.4 cm (10.0 in)	20.3 cm (8.0 in)	52 years	54 of 100 (Notable)
31 October 1973	Terowie (Parnaroo Sect 50), AU	daily rain	38.1 mm (1.5 in)	27.7 mm (1.1 in)	26 years	52 of 100 (Notable)
31 October 1973	Itamarati-SE, BR	daily rain	69.6 mm (2.7 in)	51.6 mm (2.0 in)	32 years	52 of 100 (Notable)
31 October 1973	Bom Jardim de Minas, BR	all-time rain	150.0 mm (5.9 in)	25.0 mm (1.0 in)	27 years	51 of 100 (Notable)
31 October 1973	Wilcannia (Burndoo Estate), AU	daily rain	25.1 mm (1.0 in)	22.6 mm (0.9 in)	62 years	50 of 100 (Notable)
31 October 1973	Conceicao Do Rio Verde, BR	daily rain	112.2 mm (4.4 in)	77.2 mm (3.0 in)	18 years	48 of 100 (Notable)
31 October 1973	Areal (Granja Gabi), BR	daily rain	74.0 mm (2.9 in)	59.0 mm (2.3 in)	16 years	48 of 100 (Notable)
31 October 1973	Walla Walla WSO City, US	daily rain	26.2 mm (1.0 in)	16.3 mm (0.6 in)	44 years	47 of 100 (Notable)
31 October 1973	Baependi, BR	monthly rain	104.4 mm (4.1 in)	33.1 mm (1.3 in)	16 years	46 of 100 (Notable)
31 October 1973	Usina Do Chicao, BR	daily rain	66.2 mm (2.6 in)	41.0 mm (1.6 in)	11 years	46 of 100 (Notable)
31 October 1973	Usina Amalia, BR	daily rain	80.2 mm (3.2 in)	53.8 mm (2.1 in)	28 years	46 of 100 (Notable)
31 October 1973	Ungowa Forest Station, AU	daily rain	50.3 mm (2.0 in)	35.6 mm (1.4 in)	43 years	44 of 100 (Notable)
31 October 1973	Charqueada, BR	daily rain	64.2 mm (2.5 in)	48.7 mm (1.9 in)	23 years	44 of 100 (Notable)
31 October 1973	Grapevine Dam, US	daily rain	56.9 mm (2.2 in)	35.1 mm (1.4 in)	70 years	44 of 100 (Notable)
31 October 1973	Kahuku 912, US	daily rain	94.0 mm (3.7 in)	39.1 mm (1.5 in)	22 years	44 of 100 (Notable)
31 October 1973	Indiana (Cima), BR	daily rain	79.5 mm (3.1 in)	59.5 mm (2.3 in)	24 years	43 of 100 (Notable)
31 October 1973	St Andrews, CA	daily high min	11.7 C (53.1 F)	2.8 C (5.0 F)	91 years	43 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 1973

Records set or tied on this calendar date in each year from 1805 to 1973. 1973 had 581 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 1973-10-31: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	513
50 to 100	21
100 to 150	4
150 to 200	1
200 to 250	1