Weather Records on 21 October 1997

915 weather records were set or tied worldwide on 21 October 1997. Highest significance: Cekunda, RU.

Key Facts for 21 October 1997

On 21 October 1997, 915 weather records were set or tied at long-record stations worldwide.
330 were record highs and 336 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 28 monthly and 886 daily.
Cekunda set a daily record precipitation of 25.6 mm (1.0 in) on 21 October 1997.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 417 records.

Record Map

915 stations

915 station records on 21 October 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cekunda	Russia	Record daily precipitation	25.6 mm (1.0 in)	59 of 100 (Notable)
Santa Juliana	Brazil	Record daily precipitation	85.3 mm (3.4 in)	58 of 100 (Notable)
Bambui	Brazil	Record daily precipitation	89.6 mm (3.5 in)	56 of 100 (Notable)
Formiga	Brazil	Record daily precipitation	76.2 mm (3.0 in)	53 of 100 (Notable)
Barra Do Funchal	Brazil	Record daily precipitation	70.6 mm (2.8 in)	52 of 100 (Notable)
Mandera	Kenya	Record daily precipitation	51.6 mm (2.0 in)	52 of 100 (Notable)
Dores Do Indaia (Cvsf)	Brazil	Record daily precipitation	68.4 mm (2.7 in)	47 of 100 (Notable)
Avai	Brazil	Record daily precipitation	65.8 mm (2.6 in)	46 of 100 (Notable)
Ibia	Brazil	Record daily precipitation	58.4 mm (2.3 in)	45 of 100 (Notable)
Yurecuaro	Mexico	Record low minimum temperature	2.2 C (36.0 F)	45 of 100 (Notable)
Gagnoa	Cote D'Ivoire	Record daily precipitation	78.0 mm (3.1 in)	44 of 100 (Notable)
Vivero la Paz	Mexico	Record low maximum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Mount Wittenoom	Australia	Record daily precipitation	28.0 mm (1.1 in)	43 of 100 (Notable)
Cape Leeuwin	Australia	Record high maximum temperature	27.1 C (80.8 F)	43 of 100 (Notable)
Fazenda Ajudas	Brazil	Record daily precipitation	90.2 mm (3.6 in)	43 of 100 (Notable)
Motozintla (Smn)	Mexico	Record daily precipitation	42.9 mm (1.7 in)	43 of 100 (Notable)
Aunet	Norway	Record snow depth	43.0 cm (16.9 in)	43 of 100 (Notable)
Bauru (Pdv)	Brazil	Record daily precipitation	76.0 mm (3.0 in)	42 of 100 (Notable)
Iguatama	Brazil	Record daily precipitation	65.6 mm (2.6 in)	41 of 100 (Notable)
Represa Bariri	Brazil	Record daily precipitation	50.7 mm (2.0 in)	41 of 100 (Notable)
Tapirai-Jusante	Brazil	Record daily precipitation	95.4 mm (3.8 in)	40 of 100 (Notable)
Valentim Gentil	Brazil	Record daily precipitation	127.1 mm (5.0 in)	40 of 100 (Notable)
Tapalpa (Smn)	Mexico	Record low minimum temperature	2.8 C (37.0 F)	39 of 100 (Notable)
Salitre	Brazil	Record daily precipitation	61.3 mm (2.4 in)	38 of 100 (Notable)
Reginopolis	Brazil	Record daily precipitation	98.4 mm (3.9 in)	38 of 100 (Notable)
Barcelona -Fabra Observatory	Spain	Record high maximum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Coroata	Brazil	Record daily precipitation	45.9 mm (1.8 in)	37 of 100 (Notable)
Torrevieja	Spain	Record high minimum temperature	21.0 C (69.8 F)	37 of 100 (Notable)
Fazenda Sao Joao	Brazil	Record daily precipitation	61.6 mm (2.4 in)	36 of 100 (Notable)
Botafogo (Cpef)	Brazil	Record daily precipitation	63.6 mm (2.5 in)	36 of 100 (Notable)
Guaianas	Brazil	Record daily precipitation	52.3 mm (2.1 in)	36 of 100 (Notable)
Ohotsk	Russia	Record high minimum temperature	2.3 C (36.1 F)	36 of 100 (Notable)
Lamounier	Brazil	Record daily precipitation	65.1 mm (2.6 in)	35 of 100 (Notable)
Vestervig	Denmark	Record low minimum temperature	-1.9 C (28.6 F)	35 of 100 (Notable)
Santa Fe	Mexico	Record high maximum temperature	32.8 C (91.0 F)	35 of 100 (Notable)
Ust-Maja	Russia	Record high minimum temperature	-1.8 C (28.8 F)	35 of 100 (Notable)
Torrevieja	Spain	Record high maximum temperature	29.0 C (84.2 F)	35 of 100 (Notable)
Dunderlandsdalen	Norway	Record snow depth	48.0 cm (18.9 in)	34 of 100 (Routine)
Hastings 4N	United States	Record low maximum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Marathon	United States	Record high minimum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Tottori	Japan	Record high maximum temperature	30.1 C (86.2 F)	33 of 100 (Routine)
San Miguel El Alto	Mexico	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)
Lisboa Geofisica	Portugal	Record high minimum temperature	19.2 C (66.6 F)	33 of 100 (Routine)
Halmstad	Sweden	Record low minimum temperature	-6.0 C (21.2 F)	33 of 100 (Routine)
Whitefish Pt	United States	Record low maximum temperature	2.2 C (36.0 F)	33 of 100 (Routine)
Agudos	Brazil	Record daily precipitation	58.7 mm (2.3 in)	32 of 100 (Routine)
Tapirai	Brazil	Record daily precipitation	49.9 mm (2.0 in)	32 of 100 (Routine)
Barcelona/Aeropuerto	Spain	Record high minimum temperature	18.8 C (65.8 F)	32 of 100 (Routine)
Ljungby	Sweden	Record low minimum temperature	-6.0 C (21.2 F)	32 of 100 (Routine)
Hettinger	United States	Record low minimum temperature	-11.7 C (10.9 F)	32 of 100 (Routine)
Divinopolis	Brazil	Record daily precipitation	112.0 mm (4.4 in)	31 of 100 (Routine)
Fazenda Santa Cecilia	Brazil	Record daily precipitation	48.0 mm (1.9 in)	31 of 100 (Routine)
Votuporanga	Brazil	Record daily precipitation	87.7 mm (3.5 in)	31 of 100 (Routine)
Bento Quirino	Brazil	Record daily precipitation	67.6 mm (2.7 in)	31 of 100 (Routine)
Cachoeira da Graca	Brazil	Record daily precipitation	37.2 mm (1.5 in)	31 of 100 (Routine)
Guanhanha	Brazil	Record daily precipitation	69.8 mm (2.7 in)	31 of 100 (Routine)
Yonago	Japan	Record high maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Dinosaur Nm-Quarry Area	United States	Record high maximum temperature	27.8 C (82.0 F)	31 of 100 (Routine)
Usina Barbacena	Brazil	Record daily precipitation	42.8 mm (1.7 in)	30 of 100 (Routine)
Itariri	Brazil	Record daily precipitation	56.0 mm (2.2 in)	30 of 100 (Routine)

Counts by Type and Timescale

915 records

Records set or tied on 21 October 1997 by type: Highest daily maximum 197, Lowest daily maximum 79, Highest daily minimum 133, Lowest daily minimum 257, Heaviest daily rainfall 230, Heaviest daily snowfall 6, Deepest snow cover 13.

Records on 21 October 1997 by type
Record type	Records
Highest daily maximum	197
Lowest daily maximum	79
Highest daily minimum	133
Lowest daily minimum	257
Heaviest daily rainfall	230
Heaviest daily snowfall	6
Deepest snow cover	13

Records on 21 October 1997 by timescale: all-time 1, monthly 28, daily 886.

How Much Records Were Beaten By

792 broken records

Margins by which the 792 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 210.0. Ties are not counted.

Top 20 by Significance

21 October 1997

Top 20 records on 21 October 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1997	Cekunda, RU	daily rain	25.6 mm (1.0 in)	18.5 mm (0.7 in)	44 years	59 of 100 (Notable)
21 October 1997	Santa Juliana, BR	daily rain	85.3 mm (3.4 in)	67.3 mm (2.6 in)	44 years	58 of 100 (Notable)
21 October 1997	Bambui, BR	daily rain	89.6 mm (3.5 in)	70.4 mm (2.8 in)	38 years	56 of 100 (Notable)
21 October 1997	Formiga, BR	daily rain	76.2 mm (3.0 in)	55.8 mm (2.2 in)	20 years	53 of 100 (Notable)
21 October 1997	Barra Do Funchal, BR	daily rain	70.6 mm (2.8 in)	44.6 mm (1.8 in)	44 years	52 of 100 (Notable)
21 October 1997	Mandera, KE	daily rain	51.6 mm (2.0 in)	45.2 mm (1.8 in)	28 years	52 of 100 (Notable)
21 October 1997	Dores Do Indaia (Cvsf), BR	daily rain	68.4 mm (2.7 in)	45.2 mm (1.8 in)	20 years	47 of 100 (Notable)
21 October 1997	Avai, BR	daily rain	65.8 mm (2.6 in)	54.9 mm (2.2 in)	30 years	46 of 100 (Notable)
21 October 1997	Ibia, BR	daily rain	58.4 mm (2.3 in)	36.2 mm (1.4 in)	52 years	45 of 100 (Notable)
21 October 1997	Yurecuaro, MX	daily low min	2.2 C (36.0 F)	5.6 C (10.1 F)	52 years	45 of 100 (Notable)
21 October 1997	Gagnoa, CI	daily rain	78.0 mm (3.1 in)	48.0 mm (1.9 in)	8 years	44 of 100 (Notable)
21 October 1997	Vivero la Paz, MX	daily low max	15.0 C (59.0 F)	6.1 C (11.0 F)	32 years	44 of 100 (Notable)
21 October 1997	Mount Wittenoom, AU	daily rain	28.0 mm (1.1 in)	22.2 mm (0.9 in)	26 years	43 of 100 (Notable)
21 October 1997	Cape Leeuwin, AU	daily high max	27.1 C (80.8 F)	1.9 C (3.4 F)	88 years	43 of 100 (Notable)
21 October 1997	Fazenda Ajudas, BR	monthly rain	90.2 mm (3.6 in)	17.4 mm (0.7 in)	50 years	43 of 100 (Notable)
21 October 1997	Motozintla (Smn), MX	daily rain	42.9 mm (1.7 in)	23.1 mm (0.9 in)	32 years	43 of 100 (Notable)
21 October 1997	Aunet, NO	daily snow depth	43.0 cm (16.9 in)	8.0 cm (3.1 in)	92 years	43 of 100 (Notable)
21 October 1997	Bauru (Pdv), BR	daily rain	76.0 mm (3.0 in)	40.5 mm (1.6 in)	38 years	42 of 100 (Notable)
21 October 1997	Iguatama, BR	daily rain	65.6 mm (2.6 in)	27.6 mm (1.1 in)	51 years	41 of 100 (Notable)
21 October 1997	Represa Bariri, BR	daily rain	50.7 mm (2.0 in)	43.1 mm (1.7 in)	30 years	41 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

1795 to 1997

Records set or tied on this calendar date in each year from 1795 to 1997. 1997 had 915 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 1997-10-21: 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 50	782
50 to 100	7
100 to 150	2
150 to 200	0
200 to 250	1