Weather Records on 4 October 2021

644 weather records were set or tied worldwide on 4 October 2021. Highest significance: Auburn, US.

Key Facts for 4 October 2021

On 4 October 2021, 644 weather records were set or tied at long-record stations worldwide.
450 were record highs and 43 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 56 monthly and 586 daily.
Auburn set a daily record precipitation of 49.8 mm (2.0 in) on 4 October 2021.
Across 160 earlier years (1795 to 2026) the same calendar date averaged 464 records.

Record Map

644 stations

644 station records on 4 October 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 October 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Auburn	United States	Record daily precipitation	49.8 mm (2.0 in)	73 of 100 (Major)
Goychay	Azerbaijan	Record daily precipitation	99.8 mm (3.9 in)	69 of 100 (Major)
Brockport	United States	Record daily precipitation	37.3 mm (1.5 in)	64 of 100 (Major)
Great Western (Seppelt)	Australia	Record daily precipitation	29.5 mm (1.2 in)	63 of 100 (Major)
Haboro	Japan	Record daily precipitation	74.9 mm (2.9 in)	61 of 100 (Major)
Yuanping	China	Record daily precipitation	39.9 mm (1.6 in)	60 of 100 (Major)
Hanzhong	China	Record daily precipitation	80.8 mm (3.2 in)	60 of 100 (Major)
Lake Mills Wwtp	United States	Record daily precipitation	63.0 mm (2.5 in)	59 of 100 (Notable)
Yan An	China	Record daily precipitation	78.5 mm (3.1 in)	58 of 100 (Notable)
Skaneateles	United States	Record daily precipitation	43.2 mm (1.7 in)	58 of 100 (Notable)
Saint Exupery	France	Record daily precipitation	79.2 mm (3.1 in)	56 of 100 (Notable)
Canandaigua 3 S	United States	Record daily precipitation	63.0 mm (2.5 in)	54 of 100 (Notable)
Taiyuan	China	Record daily precipitation	85.6 mm (3.4 in)	53 of 100 (Notable)
Nausori	Fiji	Record daily precipitation	198.8 mm (7.8 in)	53 of 100 (Notable)
Morpeth: Cockle Park	United Kingdom	Record daily precipitation	29.2 mm (1.1 in)	53 of 100 (Notable)
Geneva Rsch Farm	United States	Record daily precipitation	67.3 mm (2.6 in)	51 of 100 (Notable)
Wisley	United Kingdom	Record daily precipitation	25.4 mm (1.0 in)	50 of 100 (Notable)
Pittsfield Muni AP	United States	Record daily precipitation	79.0 mm (3.1 in)	49 of 100 (Notable)
Talbotton	United States	Record daily precipitation	101.6 mm (4.0 in)	47 of 100 (Notable)
Avon	United States	Record daily precipitation	53.3 mm (2.1 in)	44 of 100 (Notable)
Renovo	United States	Record daily precipitation	36.3 mm (1.4 in)	44 of 100 (Notable)
Ashland	United States	Record daily precipitation	38.1 mm (1.5 in)	44 of 100 (Notable)
Zagreb-Gric	Croatia	Record high maximum temperature	26.9 C (80.4 F)	43 of 100 (Notable)
Hemlock	United States	Record daily precipitation	35.8 mm (1.4 in)	43 of 100 (Notable)
Kent City 2 SW	United States	Record daily precipitation	60.5 mm (2.4 in)	42 of 100 (Notable)
Sherburne	United States	Record daily precipitation	36.8 mm (1.4 in)	42 of 100 (Notable)
Lake Leake (Kooeeyong)	Australia	Record daily precipitation	26.2 mm (1.0 in)	41 of 100 (Notable)
Yanzhou	China	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Miyako	Japan	Record high maximum temperature	30.5 C (86.9 F)	41 of 100 (Notable)
Ulleungdo	Korea, South	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Karungi	Sweden	Record daily precipitation	30.5 mm (1.2 in)	41 of 100 (Notable)
Wattisham	United Kingdom	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
Alma	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Kingston	United States	Record daily precipitation	26.7 mm (1.1 in)	41 of 100 (Notable)
Mahackala	Russia	Record daily precipitation	32.0 mm (1.3 in)	40 of 100 (Notable)
Peebles	United States	Record daily precipitation	32.5 mm (1.3 in)	40 of 100 (Notable)
Racine Wwtp	United States	Record high minimum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Batavia	United States	Record daily precipitation	28.7 mm (1.1 in)	39 of 100 (Notable)
Shijiazhuang	China	Record daily precipitation	46.0 mm (1.8 in)	38 of 100 (Notable)
Anqing	China	Record high maximum temperature	34.7 C (94.5 F)	38 of 100 (Notable)
Laurel	United States	Record daily precipitation	73.2 mm (2.9 in)	37 of 100 (Notable)
Cody	United States	Record high minimum temperature	13.3 C (55.9 F)	37 of 100 (Notable)
Columbus Metro AP	United States	Record daily precipitation	133.1 mm (5.2 in)	37 of 100 (Notable)
Bridgewater (Post Office)	Australia	Record daily precipitation	31.2 mm (1.2 in)	36 of 100 (Notable)
Jiexiu	China	Record daily precipitation	66.5 mm (2.6 in)	36 of 100 (Notable)
Daly Waters AWS	Australia	Record high maximum temperature	41.5 C (106.7 F)	35 of 100 (Notable)
Winfield 2 SW	United States	Record daily precipitation	89.2 mm (3.5 in)	35 of 100 (Notable)
Newark	United States	Record daily precipitation	35.3 mm (1.4 in)	35 of 100 (Notable)
Oneida	United States	Record daily precipitation	79.8 mm (3.1 in)	35 of 100 (Notable)
Mercedes	Uruguay	Record low minimum temperature	1.4 C (34.5 F)	35 of 100 (Notable)
Aliceville	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Bijie	China	Record high minimum temperature	21.0 C (69.8 F)	33 of 100 (Routine)
Xisha Dao	China	Record high maximum temperature	32.9 C (91.2 F)	33 of 100 (Routine)
Vardo	Norway	Record high maximum temperature	13.1 C (55.6 F)	33 of 100 (Routine)
Mierkenis_A	Sweden	Record high maximum temperature	12.4 C (54.3 F)	33 of 100 (Routine)
Cayuga Lock #1	United States	Record daily precipitation	45.5 mm (1.8 in)	33 of 100 (Routine)
Newcomb	United States	Record daily precipitation	52.1 mm (2.1 in)	33 of 100 (Routine)
Mt Clemens Ang Base	United States	Record high minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Alonnah Area School	Australia	Record daily precipitation	26.0 mm (1.0 in)	32 of 100 (Routine)
Sarh	Chad	Record high minimum temperature	24.0 C (75.2 F)	32 of 100 (Routine)

Counts by Type and Timescale

644 records

Records set or tied on 4 October 2021 by type: Highest daily maximum 234, Lowest daily maximum 16, Highest daily minimum 216, Lowest daily minimum 27, Heaviest daily rainfall 149, Deepest snow cover 2.

Records on 4 October 2021 by type
Record type	Records
Highest daily maximum	234
Lowest daily maximum	16
Highest daily minimum	216
Lowest daily minimum	27
Heaviest daily rainfall	149
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 4 October 2021 by timescale: all-time 2, monthly 56, daily 586.

How Much Records Were Beaten By

529 broken records

Margins by which the 529 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 139.9. Ties are not counted.

Top 20 by Significance

4 October 2021

Top 20 records on 4 October 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 October 2021	Auburn, US	daily rain	49.8 mm (2.0 in)	30.7 mm (1.2 in)	114 years	73 of 100 (Major)
4 October 2021	Goychay, AZ	daily rain	99.8 mm (3.9 in)	54.4 mm (2.1 in)	84 years	69 of 100 (Major)
4 October 2021	Brockport, US	daily rain	37.3 mm (1.5 in)	19.0 mm (0.7 in)	114 years	64 of 100 (Major)
4 October 2021	Great Western (Seppelt), AU	daily rain	29.5 mm (1.2 in)	17.3 mm (0.7 in)	112 years	63 of 100 (Major)
4 October 2021	Haboro, JP	daily rain	74.9 mm (2.9 in)	45.4 mm (1.8 in)	48 years	61 of 100 (Major)
4 October 2021	Yuanping, CN	daily rain	39.9 mm (1.6 in)	26.1 mm (1.0 in)	48 years	60 of 100 (Major)
4 October 2021	Hanzhong, CN	daily rain	80.8 mm (3.2 in)	49.0 mm (1.9 in)	44 years	60 of 100 (Major)
4 October 2021	Lake Mills Wwtp, US	daily rain	63.0 mm (2.5 in)	19.6 mm (0.8 in)	120 years	59 of 100 (Notable)
4 October 2021	Yan An, CN	monthly rain	78.5 mm (3.1 in)	31.5 mm (1.2 in)	3 years	58 of 100 (Notable)
4 October 2021	Skaneateles, US	daily rain	43.2 mm (1.7 in)	19.3 mm (0.8 in)	94 years	58 of 100 (Notable)
4 October 2021	Saint Exupery, FR	daily rain	79.2 mm (3.1 in)	54.3 mm (2.1 in)	43 years	56 of 100 (Notable)
4 October 2021	Canandaigua 3 S, US	daily rain	63.0 mm (2.5 in)	44.2 mm (1.7 in)	22 years	54 of 100 (Notable)
4 October 2021	Taiyuan, CN	monthly rain	85.6 mm (3.4 in)	25.4 mm (1.0 in)	3 years	53 of 100 (Notable)
4 October 2021	Nausori, FJ	daily rain	198.8 mm (7.8 in)	139.9 mm (5.5 in)	31 years	53 of 100 (Notable)
4 October 2021	Morpeth: Cockle Park, GB	daily rain	29.2 mm (1.1 in)	17.5 mm (0.7 in)	42 years	53 of 100 (Notable)
4 October 2021	Geneva Rsch Farm, US	daily rain	67.3 mm (2.6 in)	46.7 mm (1.8 in)	22 years	51 of 100 (Notable)
4 October 2021	Wisley, GB	daily rain	25.4 mm (1.0 in)	17.1 mm (0.7 in)	39 years	50 of 100 (Notable)
4 October 2021	Pittsfield Muni AP, US	daily rain	79.0 mm (3.1 in)	16.5 mm (0.6 in)	94 years	49 of 100 (Notable)
4 October 2021	Talbotton, US	daily rain	101.6 mm (4.0 in)	52.3 mm (2.1 in)	26 years	47 of 100 (Notable)
4 October 2021	Avon, US	daily rain	53.3 mm (2.1 in)	20.3 mm (0.8 in)	35 years	44 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 644 records.

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

Records on 10-04 in each year
Year	Records
1795	1
1802	1
1841	2
1843	1
1844	2
1847	2
1853	1
1859	1
1864	8
1865	2
1867	1
1868	1
1873	1
1875	1
1876	1
1878	1
1880	1
1881	3
1882	1
1883	3
1884	4
1885	2
1886	3
1888	5
1889	2
1890	1
1891	3
1892	2
1893	2
1894	3
1895	3
1896	3
1898	4
1899	1
1900	3
1901	9
1902	5
1903	8
1904	5
1905	11
1906	29
1907	10
1908	18
1909	13
1910	21
1911	23
1912	101
1913	12
1914	18
1915	13
1916	137
1917	157
1918	127
1919	30
1920	31
1921	46
1922	44
1923	21
1924	63
1925	130
1926	255
1927	172
1928	131
1929	339
1930	244
1931	361
1932	413
1933	299
1934	121
1935	833
1936	161
1937	483
1938	440
1939	345
1940	220
1941	850
1942	198
1943	426
1944	328
1945	543
1946	314
1947	592
1948	449
1949	491
1950	565
1951	617
1952	717
1953	358
1954	999
1955	630
1956	467
1957	533
1958	704
1959	812
1960	246
1961	758
1962	313
1963	528
1964	389
1965	760
1966	464
1967	440
1968	587
1969	628
1970	539
1971	361
1972	712
1973	604
1974	1,846
1975	681
1976	869
1977	517
1978	488
1979	733
1980	975
1981	994
1982	415
1983	762
1984	864
1985	863
1986	1,265
1987	1,502
1988	713
1989	742
1990	845
1991	813
1992	866
1993	956
1994	1,341
1995	1,192
1996	1,012
1997	928
1998	1,487
1999	1,596
2000	917
2001	547
2002	1,465
2003	610
2004	562
2005	1,973
2006	987
2007	997
2008	935
2009	1,431
2010	1,230
2011	919
2012	864
2013	1,130
2014	611
2015	741
2016	680
2017	780
2018	979
2019	1,131
2020	897
2021	644
2022	561
2023	936
2024	1,197
2025	979
2026	942

Download the Data

Data for records on 2021-10-04: 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 20	505
20 to 40	15
40 to 60	7
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1