Weather Records on 21 October 2021

574 weather records were set or tied worldwide on 21 October 2021. Highest significance: Malacca, MY.

Key Facts for 21 October 2021

On 21 October 2021, 574 weather records were set or tied at long-record stations worldwide.
286 were record highs and 54 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 567 daily.
Malacca set a daily record precipitation of 135.9 mm (5.4 in) on 21 October 2021.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 419 records.

Record Map

574 stations

574 station records on 21 October 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Malacca	Malaysia	Record daily precipitation	135.9 mm (5.4 in)	64 of 100 (Major)
Waseca S Rsch & Outreach Ctr	United States	Record daily precipitation	44.2 mm (1.7 in)	64 of 100 (Major)
Brushgrove Post Office	Australia	Record daily precipitation	67.8 mm (2.7 in)	61 of 100 (Major)
Kristianstad	Sweden	Record daily precipitation	29.1 mm (1.1 in)	59 of 100 (Notable)
De Kooy	Netherlands	Record daily precipitation	37.4 mm (1.5 in)	58 of 100 (Notable)
Kentfield	United States	Record daily precipitation	69.1 mm (2.7 in)	56 of 100 (Notable)
Raoul Isl/Kermadec	New Zealand	Record high maximum temperature	27.1 C (80.8 F)	54 of 100 (Notable)
Tullinge A	Sweden	Record daily precipitation	25.7 mm (1.0 in)	53 of 100 (Notable)
Cairns Post Office	Australia	Record high minimum temperature	26.0 C (78.8 F)	52 of 100 (Notable)
Lund	Sweden	Record daily precipitation	28.5 mm (1.1 in)	52 of 100 (Notable)
Manistee 3SE	United States	Record daily precipitation	37.8 mm (1.5 in)	52 of 100 (Notable)
Mt Alford	Australia	Record daily precipitation	68.0 mm (2.7 in)	51 of 100 (Notable)
Akron	United States	Record daily precipitation	40.4 mm (1.6 in)	47 of 100 (Notable)
Medford	United States	Record daily precipitation	25.9 mm (1.0 in)	47 of 100 (Notable)
Mombetsu	Japan	Record daily precipitation	55.9 mm (2.2 in)	46 of 100 (Notable)
Sheldon	United States	Record daily precipitation	27.9 mm (1.1 in)	46 of 100 (Notable)
Otaru	Japan	Record daily precipitation	55.1 mm (2.2 in)	45 of 100 (Notable)
Chuxiong	China	Record daily precipitation	35.3 mm (1.4 in)	44 of 100 (Notable)
Trujillo Alto 2 SSW	Puerto Rico [United States]	Record daily precipitation	104.1 mm (4.1 in)	44 of 100 (Notable)
Tartu-Toravere	Estonia	Record high minimum temperature	11.5 C (52.7 F)	43 of 100 (Notable)
Klaipeda	Lithuania	Record high maximum temperature	21.4 C (70.5 F)	43 of 100 (Notable)
Boulia Airport	Australia	Record high minimum temperature	27.8 C (82.0 F)	42 of 100 (Notable)
Pet Jorhat	India	Record daily precipitation	32.0 mm (1.3 in)	42 of 100 (Notable)
Bromolla	Sweden	Record daily precipitation	37.0 mm (1.5 in)	42 of 100 (Notable)
St Peter	United States	Record daily precipitation	38.9 mm (1.5 in)	42 of 100 (Notable)
Tasiilaq	Greenland [Denmark]	Record high maximum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Oneonta	United States	Record daily precipitation	25.7 mm (1.0 in)	41 of 100 (Notable)
Uusikaupunki Nervanderinpuisto	Finland	Record daily precipitation	32.8 mm (1.3 in)	40 of 100 (Notable)
Oksendal	Norway	Record daily precipitation	43.6 mm (1.7 in)	40 of 100 (Notable)
Muir Woods	United States	Record daily precipitation	50.3 mm (2.0 in)	40 of 100 (Notable)
Kitamiesashi	Japan	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Boca	United States	Record high minimum temperature	5.0 C (41.0 F)	39 of 100 (Notable)
Omu	Japan	Record daily precipitation	53.1 mm (2.1 in)	37 of 100 (Notable)
Makurazaki	Japan	Record low maximum temperature	15.8 C (60.4 F)	37 of 100 (Notable)
Semjachik	Russia	Record low maximum temperature	0.3 C (32.5 F)	37 of 100 (Notable)
Nobeoka	Japan	Record low maximum temperature	15.9 C (60.6 F)	36 of 100 (Notable)
Leksvik - Myran	Norway	Record daily precipitation	50.3 mm (2.0 in)	36 of 100 (Notable)
Rock Rapids	United States	Record daily precipitation	26.2 mm (1.0 in)	36 of 100 (Notable)
Voru	Estonia	Record high minimum temperature	11.9 C (53.4 F)	35 of 100 (Notable)
Kokemaki Peipohja Hyrkola	Finland	Record daily precipitation	26.5 mm (1.0 in)	35 of 100 (Notable)
Staraja_Russa	Russia	Record high maximum temperature	16.2 C (61.2 F)	35 of 100 (Notable)
Dawson	United States	Record daily precipitation	39.6 mm (1.6 in)	35 of 100 (Notable)
Narva	Estonia	Record high minimum temperature	10.9 C (51.6 F)	34 of 100 (Routine)
Penang Intl	Malaysia	Record daily precipitation	122.9 mm (4.8 in)	34 of 100 (Routine)
Ica	Russia	Record low maximum temperature	-1.7 C (28.9 F)	34 of 100 (Routine)
Winnebago	United States	Record daily precipitation	51.3 mm (2.0 in)	34 of 100 (Routine)
Valga	Estonia	Record high minimum temperature	11.8 C (53.2 F)	33 of 100 (Routine)
Abashiri	Japan	Record daily precipitation	36.1 mm (1.4 in)	33 of 100 (Routine)
Leeuwarden	Netherlands	Record daily precipitation	29.5 mm (1.2 in)	33 of 100 (Routine)
Vanavara	Russia	Record high maximum temperature	11.3 C (52.3 F)	33 of 100 (Routine)
Ust-Hairyuzovo	Russia	Record low maximum temperature	-2.5 C (27.5 F)	33 of 100 (Routine)
Graton	United States	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Blue Canyon Nyack AP	United States	Record daily precipitation	40.4 mm (1.6 in)	33 of 100 (Routine)
Miami Beach	United States	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Pinnacle	Australia	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Narva	Estonia	Record high maximum temperature	13.3 C (55.9 F)	32 of 100 (Routine)
Oripaa Teinikivi	Finland	Record daily precipitation	26.3 mm (1.0 in)	32 of 100 (Routine)
Marknesse	Netherlands	Record daily precipitation	30.4 mm (1.2 in)	32 of 100 (Routine)
Magueyes Is	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Amga	Russia	Record high minimum temperature	-3.6 C (25.5 F)	32 of 100 (Routine)

Counts by Type and Timescale

574 records

Records set or tied on 21 October 2021 by type: Highest daily maximum 127, Lowest daily maximum 37, Highest daily minimum 159, Lowest daily minimum 17, Heaviest daily rainfall 231, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 21 October 2021 by type
Record type	Records
Highest daily maximum	127
Lowest daily maximum	37
Highest daily minimum	159
Lowest daily minimum	17
Heaviest daily rainfall	231
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 21 October 2021 by timescale: all-time 0, monthly 7, daily 567.

How Much Records Were Beaten By

500 broken records

Margins by which the 500 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 89.9. Ties are not counted.

Top 20 by Significance

21 October 2021

Top 20 records on 21 October 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 2021	Malacca, MY	daily rain	135.9 mm (5.4 in)	89.9 mm (3.5 in)	58 years	64 of 100 (Major)
21 October 2021	Waseca S Rsch & Outreach Ctr, US	daily rain	44.2 mm (1.7 in)	26.9 mm (1.1 in)	86 years	64 of 100 (Major)
21 October 2021	Brushgrove Post Office, AU	daily rain	67.8 mm (2.7 in)	29.4 mm (1.2 in)	111 years	61 of 100 (Major)
21 October 2021	Kristianstad, SE	daily rain	29.1 mm (1.1 in)	8.9 mm (0.35 in)	129 years	59 of 100 (Notable)
21 October 2021	De Kooy, NL	daily rain	37.4 mm (1.5 in)	23.2 mm (0.9 in)	60 years	58 of 100 (Notable)
21 October 2021	Kentfield, US	daily rain	69.1 mm (2.7 in)	35.6 mm (1.4 in)	119 years	56 of 100 (Notable)
21 October 2021	Raoul Isl/Kermadec, NZ	monthly high max	27.1 C (80.8 F)	2.1 C (3.8 F)	67 years	54 of 100 (Notable)
21 October 2021	Tullinge A, SE	daily rain	25.7 mm (1.0 in)	14.3 mm (0.6 in)	66 years	53 of 100 (Notable)
21 October 2021	Cairns Post Office, AU	monthly high min	26.0 C (78.8 F)	0.6 C (1.1 F)	114 years	52 of 100 (Notable)
21 October 2021	Lund, SE	daily rain	28.5 mm (1.1 in)	6.3 mm (0.25 in)	129 years	52 of 100 (Notable)
21 October 2021	Manistee 3SE, US	daily rain	37.8 mm (1.5 in)	14.9 mm (0.6 in)	88 years	52 of 100 (Notable)
21 October 2021	Mt Alford, AU	daily rain	68.0 mm (2.7 in)	35.0 mm (1.4 in)	54 years	51 of 100 (Notable)
21 October 2021	Akron, US	daily rain	40.4 mm (1.6 in)	22.1 mm (0.9 in)	64 years	47 of 100 (Notable)
21 October 2021	Medford, US	daily rain	25.9 mm (1.0 in)	8.1 mm (0.32 in)	111 years	47 of 100 (Notable)
21 October 2021	Mombetsu, JP	daily rain	55.9 mm (2.2 in)	28.9 mm (1.1 in)	44 years	46 of 100 (Notable)
21 October 2021	Sheldon, US	daily rain	27.9 mm (1.1 in)	7.6 mm (0.30 in)	110 years	46 of 100 (Notable)
21 October 2021	Otaru, JP	daily rain	55.1 mm (2.2 in)	26.6 mm (1.0 in)	40 years	45 of 100 (Notable)
21 October 2021	Chuxiong, CN	daily rain	35.3 mm (1.4 in)	25.0 mm (1.0 in)	36 years	44 of 100 (Notable)
21 October 2021	Trujillo Alto 2 SSW, PR	daily rain	104.1 mm (4.1 in)	53.3 mm (2.1 in)	31 years	44 of 100 (Notable)
21 October 2021	Tartu-Toravere, EE	daily high min	11.5 C (52.7 F)	1.6 C (2.9 F)	112 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

1795 to 2021

Records set or tied on this calendar date in each year from 1795 to 2021. 2021 had 574 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 2021-10-21: 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 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Margin	Records
0 to 20	476
20 to 40	20
40 to 60	3
60 to 80	0
80 to 100	1