Weather Records on 27 October 2021

536 weather records were set or tied worldwide on 27 October 2021. Highest significance: Hemlock, US.

Key Facts for 27 October 2021

On 27 October 2021, 536 weather records were set or tied at long-record stations worldwide.
215 were record highs and 30 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 4 monthly and 531 daily.
Hemlock set a daily record precipitation of 51.6 mm (2.0 in) on 27 October 2021.
Across 159 earlier years (1802 to 2025) the same calendar date averaged 478 records.

Record Map

536 stations

536 station records on 27 October 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 October 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hemlock	United States	Record daily precipitation	51.6 mm (2.0 in)	71 of 100 (Major)
Pulaski	United States	Record daily precipitation	51.6 mm (2.0 in)	65 of 100 (Major)
Putnam Lake	United States	Record daily precipitation	144.3 mm (5.7 in)	64 of 100 (Major)
Woodruff	United States	Record daily precipitation	35.6 mm (1.4 in)	64 of 100 (Major)
Newark	United States	Record daily precipitation	75.4 mm (3.0 in)	63 of 100 (Major)
Mt Hope	United States	Record daily precipitation	48.8 mm (1.9 in)	57 of 100 (Notable)
Columbus 3 NE	United States	Record daily precipitation	37.3 mm (1.5 in)	57 of 100 (Notable)
Bridgehampton	United States	Record daily precipitation	73.2 mm (2.9 in)	57 of 100 (Notable)
Geneva Rsch Farm	United States	Record daily precipitation	59.9 mm (2.4 in)	57 of 100 (Notable)
Valley	United Kingdom	Record daily precipitation	54.0 mm (2.1 in)	56 of 100 (Notable)
Brockport	United States	Record daily precipitation	40.6 mm (1.6 in)	54 of 100 (Notable)
Jandakot Aero	Australia	Record daily precipitation	37.2 mm (1.5 in)	53 of 100 (Notable)
Fulton	United States	Record daily precipitation	57.2 mm (2.3 in)	53 of 100 (Notable)
Middleboro	United States	Record daily precipitation	54.1 mm (2.1 in)	52 of 100 (Notable)
Brewerton Lock 23	United States	Record daily precipitation	57.2 mm (2.3 in)	52 of 100 (Notable)
Liberty 1 NE	United States	Record daily precipitation	55.4 mm (2.2 in)	52 of 100 (Notable)
Eskdalemuir	United Kingdom	Record daily precipitation	89.8 mm (3.5 in)	51 of 100 (Notable)
Belleville	United States	Record daily precipitation	68.6 mm (2.7 in)	51 of 100 (Notable)
Canandaigua 3 S	United States	Record daily precipitation	54.6 mm (2.1 in)	50 of 100 (Notable)
Wooroloo	Australia	Record daily precipitation	27.6 mm (1.1 in)	49 of 100 (Notable)
Pearce Raaf	Australia	Record daily precipitation	32.4 mm (1.3 in)	48 of 100 (Notable)
Irkutsk	Russia	Record high maximum temperature	17.3 C (63.1 F)	48 of 100 (Notable)
Harrison	United States	Record daily precipitation	42.2 mm (1.7 in)	48 of 100 (Notable)
Geneva	United States	Record daily precipitation	47.0 mm (1.9 in)	48 of 100 (Notable)
Vermillion 2 SE	United States	Record daily precipitation	29.5 mm (1.2 in)	48 of 100 (Notable)
E Wareham	United States	Record daily precipitation	67.3 mm (2.6 in)	47 of 100 (Notable)
Genoa 2 W	United States	Record daily precipitation	33.8 mm (1.3 in)	46 of 100 (Notable)
Long Branch-Oakhurst	United States	Record daily precipitation	35.1 mm (1.4 in)	46 of 100 (Notable)
Sioux City AP	United States	Record daily precipitation	43.2 mm (1.7 in)	46 of 100 (Notable)
Freeville 1 NE	United States	Record daily precipitation	55.9 mm (2.2 in)	45 of 100 (Notable)
Port Jervis	United States	Record daily precipitation	54.6 mm (2.1 in)	45 of 100 (Notable)
Susquehanna	United States	Record daily precipitation	65.5 mm (2.6 in)	44 of 100 (Notable)
Nha Trang	Vietnam	Record daily precipitation	165.1 mm (6.5 in)	44 of 100 (Notable)
Maida Vale	Australia	Record daily precipitation	28.6 mm (1.1 in)	43 of 100 (Notable)
Hesston	United States	Record daily precipitation	54.9 mm (2.2 in)	43 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	51.1 mm (2.0 in)	43 of 100 (Notable)
Avon	United States	Record daily precipitation	42.4 mm (1.7 in)	43 of 100 (Notable)
Hyannis	United States	Record daily precipitation	61.2 mm (2.4 in)	42 of 100 (Notable)
Auburn	United States	Record daily precipitation	53.1 mm (2.1 in)	42 of 100 (Notable)
Dansville	United States	Record daily precipitation	31.2 mm (1.2 in)	42 of 100 (Notable)
Norfolk Karl Stefan Mem AP	United States	Record daily precipitation	33.5 mm (1.3 in)	42 of 100 (Notable)
Forrestdale	Australia	Record daily precipitation	35.6 mm (1.4 in)	41 of 100 (Notable)
Wallace	United States	Record high maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Virginia City	United States	Record snow depth	10.2 cm (4.0 in)	41 of 100 (Notable)
Towanda 1 S	United States	Record daily precipitation	30.0 mm (1.2 in)	41 of 100 (Notable)
Brownsville	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Abisko	Sweden	Record snow depth	37.0 cm (14.6 in)	40 of 100 (Notable)
Holly	United States	Record high maximum temperature	31.7 C (89.1 F)	40 of 100 (Notable)
Alva 1W	United States	Record daily precipitation	27.2 mm (1.1 in)	40 of 100 (Notable)
Falls City Brenner Fld	United States	Record daily precipitation	26.7 mm (1.1 in)	40 of 100 (Notable)
Threave	United Kingdom	Record daily precipitation	67.2 mm (2.6 in)	39 of 100 (Notable)
Holyoke	United States	Record high maximum temperature	29.4 C (84.9 F)	39 of 100 (Notable)
Mt Carmel	United States	Record daily precipitation	57.9 mm (2.3 in)	39 of 100 (Notable)
Newton	United States	Record daily precipitation	46.0 mm (1.8 in)	39 of 100 (Notable)
Bakersville	United States	Record daily precipitation	41.7 mm (1.6 in)	38 of 100 (Notable)
Ithaca Cornell UNIV	United States	Record daily precipitation	56.1 mm (2.2 in)	38 of 100 (Notable)
Edinburgh: Royal Botanic Garde	United Kingdom	Record daily precipitation	26.2 mm (1.0 in)	37 of 100 (Notable)
Fruita	United States	Record high maximum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Elmira	United States	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
Fayetteville Drake Fld	United States	Record daily precipitation	54.9 mm (2.2 in)	37 of 100 (Notable)

Counts by Type and Timescale

536 records

Records set or tied on 27 October 2021 by type: Highest daily maximum 107, Lowest daily maximum 22, Highest daily minimum 108, Lowest daily minimum 8, Heaviest daily rainfall 284, Heaviest daily snowfall 3, Deepest snow cover 4.

Records on 27 October 2021 by type
Record type	Records
Highest daily maximum	107
Lowest daily maximum	22
Highest daily minimum	108
Lowest daily minimum	8
Heaviest daily rainfall	284
Heaviest daily snowfall	3
Deepest snow cover	4

Records on 27 October 2021 by timescale: all-time 1, monthly 4, daily 531.

How Much Records Were Beaten By

461 broken records

Margins by which the 461 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 120.2. Ties are not counted.

Top 20 by Significance

27 October 2021

Top 20 records on 27 October 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 October 2021	Hemlock, US	daily rain	51.6 mm (2.0 in)	33.1 mm (1.3 in)	78 years	71 of 100 (Major)
27 October 2021	Pulaski, US	daily rain	51.6 mm (2.0 in)	41.7 mm (1.6 in)	63 years	65 of 100 (Major)
27 October 2021	Putnam Lake, US	daily rain	144.3 mm (5.7 in)	120.2 mm (4.7 in)	59 years	64 of 100 (Major)
27 October 2021	Woodruff, US	daily rain	35.6 mm (1.4 in)	19.1 mm (0.8 in)	75 years	64 of 100 (Major)
27 October 2021	Newark, US	daily rain	75.4 mm (3.0 in)	28.2 mm (1.1 in)	78 years	63 of 100 (Major)
27 October 2021	Mt Hope, US	daily rain	48.8 mm (1.9 in)	28.0 mm (1.1 in)	103 years	57 of 100 (Notable)
27 October 2021	Columbus 3 NE, US	daily rain	37.3 mm (1.5 in)	20.5 mm (0.8 in)	103 years	57 of 100 (Notable)
27 October 2021	Bridgehampton, US	daily rain	73.2 mm (2.9 in)	35.6 mm (1.4 in)	88 years	57 of 100 (Notable)
27 October 2021	Geneva Rsch Farm, US	daily rain	59.9 mm (2.4 in)	37.5 mm (1.5 in)	40 years	57 of 100 (Notable)
27 October 2021	Valley, GB	daily rain	54.0 mm (2.1 in)	27.1 mm (1.1 in)	40 years	56 of 100 (Notable)
27 October 2021	Brockport, US	daily rain	40.6 mm (1.6 in)	24.9 mm (1.0 in)	40 years	54 of 100 (Notable)
27 October 2021	Jandakot Aero, AU	daily rain	37.2 mm (1.5 in)	26.3 mm (1.0 in)	48 years	53 of 100 (Notable)
27 October 2021	Fulton, US	daily rain	57.2 mm (2.3 in)	20.4 mm (0.8 in)	78 years	53 of 100 (Notable)
27 October 2021	Middleboro, US	daily rain	54.1 mm (2.1 in)	19.3 mm (0.8 in)	122 years	52 of 100 (Notable)
27 October 2021	Brewerton Lock 23, US	daily rain	57.2 mm (2.3 in)	19.4 mm (0.8 in)	78 years	52 of 100 (Notable)
27 October 2021	Liberty 1 NE, US	daily rain	55.4 mm (2.2 in)	17.3 mm (0.7 in)	114 years	52 of 100 (Notable)
27 October 2021	Eskdalemuir, GB	daily rain	89.8 mm (3.5 in)	55.2 mm (2.2 in)	7 years	51 of 100 (Notable)
27 October 2021	Belleville, US	daily rain	68.6 mm (2.7 in)	40.7 mm (1.6 in)	50 years	51 of 100 (Notable)
27 October 2021	Canandaigua 3 S, US	daily rain	54.6 mm (2.1 in)	17.8 mm (0.7 in)	78 years	50 of 100 (Notable)
27 October 2021	Wooroloo, AU	daily rain	27.6 mm (1.1 in)	9.8 mm (0.39 in)	86 years	49 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

1802 to 2021

Records set or tied on this calendar date in each year from 1802 to 2021. 2021 had 536 records.

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

Records on 10-27 in each year
Year	Records
1802	1
1807	1
1816	1
1831	1
1838	1
1840	1
1841	2
1847	2
1849	2
1856	2
1861	1
1866	4
1869	4
1870	2
1871	2
1873	1
1874	2
1876	1
1878	1
1880	2
1881	2
1885	2
1886	2
1887	5
1888	3
1889	1
1890	2
1892	3
1893	2
1894	2
1895	3
1896	2
1898	4
1899	14
1900	9
1901	5
1902	8
1903	23
1904	6
1905	11
1906	11
1907	9
1908	16
1909	13
1910	14
1911	20
1912	42
1913	91
1914	54
1915	65
1916	28
1917	45
1918	77
1919	74
1920	98
1921	37
1922	97
1923	63
1924	104
1925	383
1926	176
1927	521
1928	162
1929	92
1930	158
1931	241
1932	319
1933	313
1934	173
1935	266
1936	725
1937	477
1938	160
1939	836
1940	605
1941	409
1942	629
1943	479
1944	519
1945	674
1946	450
1947	551
1948	160
1949	182
1950	603
1951	269
1952	640
1953	285
1954	493
1955	578
1956	339
1957	1,116
1958	163
1959	376
1960	180
1961	428
1962	704
1963	798
1964	294
1965	284
1966	256
1967	485
1968	436
1969	532
1970	1,071
1971	1,157
1972	694
1973	719
1974	384
1975	424
1976	1,387
1977	608
1978	593
1979	553
1980	1,148
1981	1,076
1982	793
1983	707
1984	1,183
1985	592
1986	531
1987	863
1988	829
1989	1,506
1990	441
1991	1,722
1992	703
1993	667
1994	894
1995	1,238
1996	1,651
1997	2,783
1998	1,696
1999	991
2000	832
2001	1,100
2002	1,040
2003	1,669
2004	1,546
2005	897
2006	1,442
2007	950
2008	650
2009	954
2010	1,676
2011	690
2012	991
2013	706
2014	973
2015	395
2016	761
2017	582
2018	701
2019	1,364
2020	2,886
2021	536
2022	657
2023	1,668
2024	694
2025	524

Download the Data

Data for records on 2021-10-27: 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	421
20 to 40	32
40 to 60	4
60 to 80	0
80 to 100	0
100 to 120	3
120 to 140	1