Weather Records on 17 October 2021

294 weather records were set or tied worldwide on 17 October 2021. Highest significance: Timboon, AU.

Key Facts for 17 October 2021

On 17 October 2021, 294 weather records were set or tied at long-record stations worldwide.
145 were record highs and 104 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 291 daily.
Timboon set a daily record precipitation of 40.8 mm (1.6 in) on 17 October 2021.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 440 records.

Record Map

294 stations

294 station records on 17 October 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Timboon	Australia	Record daily precipitation	40.8 mm (1.6 in)	54 of 100 (Notable)
Balasore	India	Record daily precipitation	95.0 mm (3.7 in)	51 of 100 (Notable)
Ekalaka	United States	Record snow depth	10.2 cm (4.0 in)	49 of 100 (Notable)
Skagway	United States	Record low minimum temperature	-5.6 C (21.9 F)	44 of 100 (Notable)
Akola	India	Record daily precipitation	36.1 mm (1.4 in)	41 of 100 (Notable)
Hatanga	Russia	Record high maximum temperature	10.5 C (50.9 F)	41 of 100 (Notable)
Crosbyton	United States	Record low minimum temperature	0.6 C (33.1 F)	41 of 100 (Notable)
Calarasi	Romania	Record daily precipitation	25.0 mm (1.0 in)	38 of 100 (Notable)
Willis Island	Australia	Record high minimum temperature	25.7 C (78.3 F)	35 of 100 (Notable)
Cimarron 4 SW	United States	Record low minimum temperature	-11.7 C (10.9 F)	34 of 100 (Routine)
Novy-Port	Russia	Record high maximum temperature	4.5 C (40.1 F)	33 of 100 (Routine)
San Joaquin	Bolivia	Record low minimum temperature	16.0 C (60.8 F)	32 of 100 (Routine)
Tianjin	China	Record low minimum temperature	-0.1 C (31.8 F)	32 of 100 (Routine)
Hierro/Aeropuerto	Spain	Record high maximum temperature	31.5 C (88.7 F)	32 of 100 (Routine)
Martinsville Fltr Plt	United States	Record high maximum temperature	30.0 C (86.0 F)	32 of 100 (Routine)
Jinan	China	Record low minimum temperature	1.4 C (34.5 F)	31 of 100 (Routine)
Willis Island	Australia	Record high maximum temperature	30.9 C (87.6 F)	30 of 100 (Routine)
Datong	China	Record low minimum temperature	-10.2 C (13.6 F)	30 of 100 (Routine)
Takada	Japan	Record daily precipitation	54.1 mm (2.1 in)	30 of 100 (Routine)
Alpine	United States	Record high minimum temperature	7.2 C (45.0 F)	30 of 100 (Routine)
Harding 3 SE	United States	Record snow depth	20.3 cm (8.0 in)	30 of 100 (Routine)
Tuotuohe	China	Record high maximum temperature	14.5 C (58.1 F)	29 of 100 (Routine)
Takada	Japan	Record low maximum temperature	13.6 C (56.5 F)	29 of 100 (Routine)
Tete	Mozambique	Record high minimum temperature	26.2 C (79.2 F)	29 of 100 (Routine)
Surin	Thailand	Record low maximum temperature	23.0 C (73.4 F)	29 of 100 (Routine)
Abadan	Iran	Record high maximum temperature	40.7 C (105.3 F)	28 of 100 (Routine)
Camp Crook	United States	Record snow depth	15.2 cm (6.0 in)	28 of 100 (Routine)
Hohhot	China	Record low minimum temperature	-7.0 C (19.4 F)	27 of 100 (Routine)
Sosunovo	Russia	Record low minimum temperature	-6.3 C (20.7 F)	27 of 100 (Routine)
Moloaa 1145	United States	Record daily precipitation	46.0 mm (1.8 in)	27 of 100 (Routine)
Dalian	China	Record low minimum temperature	3.7 C (38.7 F)	26 of 100 (Routine)
Tazovskoe	Russia	Record high maximum temperature	4.4 C (39.9 F)	26 of 100 (Routine)
Tarko-Sale	Russia	Record high minimum temperature	3.5 C (38.3 F)	26 of 100 (Routine)
Monte Vista 2W	United States	Record low minimum temperature	-9.4 C (15.1 F)	26 of 100 (Routine)
Ayr Dpi Research STN	Australia	Record high maximum temperature	34.4 C (93.9 F)	25 of 100 (Routine)
Darlag	China	Record high maximum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Niigata	Japan	Record daily precipitation	36.1 mm (1.4 in)	25 of 100 (Routine)
Preobrazhenie	Russia	Record low minimum temperature	-3.3 C (26.1 F)	25 of 100 (Routine)
Mackay M.O	Australia	Record high maximum temperature	33.6 C (92.5 F)	24 of 100 (Routine)
Kimberley	South Africa	Record low minimum temperature	0.9 C (33.6 F)	24 of 100 (Routine)
Tempe Asu	United States	Record high minimum temperature	26.1 C (79.0 F)	24 of 100 (Routine)
Wellsville	United States	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Andrews	United States	Record high maximum temperature	31.7 C (89.1 F)	24 of 100 (Routine)
El Campo	United States	Record daily precipitation	38.1 mm (1.5 in)	24 of 100 (Routine)
Kula Hospital 267	United States	Record low minimum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Siping	China	Record low minimum temperature	-7.3 C (18.9 F)	23 of 100 (Routine)
Ust-Umalta	Russia	Record low maximum temperature	-3.4 C (25.9 F)	23 of 100 (Routine)
Sofijskij Priisk	Russia	Record low maximum temperature	-6.9 C (19.6 F)	23 of 100 (Routine)
Tupper Lake Sunmount	United States	Record daily precipitation	53.3 mm (2.1 in)	23 of 100 (Routine)
Corrientes	Argentina	Record low minimum temperature	4.7 C (40.5 F)	22 of 100 (Routine)
Jabiru Airport	Australia	Record high minimum temperature	27.4 C (81.3 F)	22 of 100 (Routine)
Deqen	China	Record high minimum temperature	8.6 C (47.5 F)	22 of 100 (Routine)
Ghadames East	Libya	Record low minimum temperature	10.2 C (50.4 F)	22 of 100 (Routine)
Tahoua	Niger	Record high minimum temperature	27.9 C (82.2 F)	22 of 100 (Routine)
Kamishli	Syria	Record low minimum temperature	9.8 C (49.6 F)	22 of 100 (Routine)
Van Buren 2	United States	Record high minimum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Amistad 5 SSW	United States	Record low minimum temperature	-2.8 C (27.0 F)	22 of 100 (Routine)
Pedernal 9 E	United States	Record low minimum temperature	-5.6 C (21.9 F)	22 of 100 (Routine)
Kodiak AP	United States	Record daily precipitation	56.4 mm (2.2 in)	22 of 100 (Routine)
Magdalena	Bolivia	Record low minimum temperature	17.0 C (62.6 F)	21 of 100 (Routine)

Counts by Type and Timescale

294 records

Records set or tied on 17 October 2021 by type: Highest daily maximum 94, Lowest daily maximum 20, Highest daily minimum 51, Lowest daily minimum 84, Heaviest daily rainfall 41, Deepest snow cover 4.

Records on 17 October 2021 by type
Record type	Records
Highest daily maximum	94
Lowest daily maximum	20
Highest daily minimum	51
Lowest daily minimum	84
Heaviest daily rainfall	41
Heaviest daily snowfall	0
Deepest snow cover	4

Records on 17 October 2021 by timescale: all-time 0, monthly 3, daily 291.

How Much Records Were Beaten By

240 broken records

Margins by which the 240 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.0. Ties are not counted.

Top 20 by Significance

17 October 2021

Top 20 records on 17 October 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 2021	Timboon, AU	daily rain	40.8 mm (1.6 in)	13.4 mm (0.5 in)	84 years	54 of 100 (Notable)
17 October 2021	Balasore, IN	daily rain	95.0 mm (3.7 in)	34.8 mm (1.4 in)	114 years	51 of 100 (Notable)
17 October 2021	Ekalaka, US	daily snow depth	10.2 cm (4.0 in)	5.1 cm (2.0 in)	121 years	49 of 100 (Notable)
17 October 2021	Skagway, US	daily low min	-5.6 C (21.9 F)	1.7 C (3.1 F)	116 years	44 of 100 (Notable)
17 October 2021	Akola, IN	daily rain	36.1 mm (1.4 in)	10.7 mm (0.4 in)	80 years	41 of 100 (Notable)
17 October 2021	Hatanga, RU	daily high max	10.5 C (50.9 F)	7.8 C (14.0 F)	75 years	41 of 100 (Notable)
17 October 2021	Crosbyton, US	daily low min	0.6 C (33.1 F)	0.5 C (0.9 F)	122 years	41 of 100 (Notable)
17 October 2021	Calarasi, RO	daily rain	25.0 mm (1.0 in)	11.1 mm (0.4 in)	59 years	38 of 100 (Notable)
17 October 2021	Willis Island, AU	daily high min	25.7 C (78.3 F)	0.7 C (1.3 F)	72 years	35 of 100 (Notable)
17 October 2021	Cimarron 4 SW, US	daily low min	-11.7 C (10.9 F)	5.6 C (10.1 F)	36 years	34 of 100 (Routine)
17 October 2021	Novy-Port, RU	daily high max	4.5 C (40.1 F)	1.3 C (2.3 F)	78 years	33 of 100 (Routine)
17 October 2021	San Joaquin, BO	daily low min	16.0 C (60.8 F)	3.8 C (6.8 F)	24 years	32 of 100 (Routine)
17 October 2021	Tianjin, CN	daily low min	-0.1 C (31.8 F)	2.9 C (5.2 F)	64 years	32 of 100 (Routine)
17 October 2021	Hierro/Aeropuerto, ES	daily high max	31.5 C (88.7 F)	2.9 C (5.2 F)	38 years	32 of 100 (Routine)
17 October 2021	Martinsville Fltr Plt, US	daily high max	30.0 C (86.0 F)	1.7 C (3.1 F)	72 years	32 of 100 (Routine)
17 October 2021	Jinan, CN	daily low min	1.4 C (34.5 F)	2.2 C (4.0 F)	64 years	31 of 100 (Routine)
17 October 2021	Willis Island, AU	daily high max	30.9 C (87.6 F)	0.3 C (0.5 F)	72 years	30 of 100 (Routine)
17 October 2021	Datong, CN	daily low min	-10.2 C (13.6 F)	2.3 C (4.1 F)	64 years	30 of 100 (Routine)
17 October 2021	Takada, JP	daily rain	54.1 mm (2.1 in)	7.3 mm (0.29 in)	64 years	30 of 100 (Routine)
17 October 2021	Alpine, US	daily high min	7.2 C (45.0 F)	1.1 C (2.0 F)	63 years	30 of 100 (Routine)

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

1793 to 2021

Records set or tied on this calendar date in each year from 1793 to 2021. 2021 had 294 records.

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

Records on 10-17 in each year
Year	Records
1793	1
1796	2
1808	2
1810	1
1811	1
1817	1
1820	1
1830	1
1836	1
1844	1
1845	1
1868	1
1869	2
1870	1
1872	1
1874	1
1875	1
1876	3
1877	1
1878	1
1879	7
1881	1
1882	1
1883	1
1884	2
1885	2
1886	1
1889	1
1890	3
1891	2
1892	6
1893	5
1894	2
1895	1
1897	3
1898	6
1899	3
1900	3
1901	3
1902	4
1903	9
1904	17
1905	12
1906	3
1907	16
1908	46
1909	18
1910	13
1911	24
1912	12
1913	26
1914	72
1915	7
1916	81
1917	29
1918	20
1919	34
1920	82
1921	64
1922	60
1923	149
1924	81
1925	324
1926	153
1927	163
1928	530
1929	119
1930	441
1931	431
1932	345
1933	190
1934	262
1935	337
1936	338
1937	865
1938	710
1939	424
1940	580
1941	194
1942	349
1943	1,173
1944	415
1945	289
1946	437
1947	744
1948	724
1949	442
1950	809
1951	274
1952	474
1953	463
1954	579
1955	562
1956	353
1957	245
1958	415
1959	403
1960	432
1961	525
1962	350
1963	513
1964	492
1965	920
1966	551
1967	576
1968	929
1969	714
1970	815
1971	1,053
1972	866
1973	542
1974	1,055
1975	605
1976	1,381
1977	1,060
1978	583
1979	468
1980	1,366
1981	555
1982	575
1983	526
1984	1,551
1985	585
1986	354
1987	828
1988	827
1989	1,163
1990	1,109
1991	1,352
1992	1,384
1993	1,001
1994	1,306
1995	1,076
1996	987
1997	1,114
1998	1,455
1999	815
2000	461
2001	878
2002	992
2003	764
2004	935
2005	643
2006	1,506
2007	690
2008	467
2009	1,606
2010	625
2011	734
2012	550
2013	516
2014	530
2015	843
2016	1,559
2017	743
2018	1,163
2019	504
2020	889
2021	294
2022	964
2023	544
2024	994
2025	363

Download the Data

Data for records on 2021-10-17: 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	234
20 to 40	2
40 to 60	2
60 to 80	0
80 to 100	0
100 to 120	2