Weather Records on 20 October 2017

602 weather records were set or tied worldwide on 20 October 2017. Highest significance: Wanaaring Post Office, AU.

Key Facts for 20 October 2017

On 20 October 2017, 602 weather records were set or tied at long-record stations worldwide.
303 were record highs and 64 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 16 monthly and 585 daily.
Wanaaring Post Office set a daily record precipitation of 70.1 mm (2.8 in) on 20 October 2017.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 456 records.

Record Map

602 stations

602 station records on 20 October 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wanaaring Post Office	Australia	Record daily precipitation	70.1 mm (2.8 in)	80 of 100 (Exceptional)
Nevertire (Beverley)	Australia	Record daily precipitation	55.6 mm (2.2 in)	70 of 100 (Major)
Hungerford	Australia	Record daily precipitation	43.0 mm (1.7 in)	65 of 100 (Major)
Cjulbju	Russia	Record daily precipitation	27.9 mm (1.1 in)	62 of 100 (Major)
Dandaloo (Kelvin)	Australia	Record daily precipitation	55.0 mm (2.2 in)	60 of 100 (Major)
Bambaroo	Australia	Record daily precipitation	65.0 mm (2.6 in)	56 of 100 (Notable)
Mount Margaret	Australia	Record daily precipitation	32.0 mm (1.3 in)	55 of 100 (Notable)
Trangie (Old Bundemar)	Australia	Record daily precipitation	40.0 mm (1.6 in)	55 of 100 (Notable)
Nyngan (Mudall)	Australia	Record daily precipitation	59.6 mm (2.3 in)	54 of 100 (Notable)
Lansdown Csiro	Australia	Record daily precipitation	79.4 mm (3.1 in)	51 of 100 (Notable)
Corowa Airport	Australia	Record daily precipitation	47.6 mm (1.9 in)	51 of 100 (Notable)
Eromanga - Webber St	Australia	Record daily precipitation	65.0 mm (2.6 in)	50 of 100 (Notable)
Lemmer (Gemaal Buma)	Netherlands	Record daily precipitation	33.1 mm (1.3 in)	50 of 100 (Notable)
Lands End Station	Australia	Record daily precipitation	56.2 mm (2.2 in)	48 of 100 (Notable)
Majors Creek	Australia	Record daily precipitation	77.2 mm (3.0 in)	48 of 100 (Notable)
Yabulu Qld Nickel	Australia	Record daily precipitation	51.4 mm (2.0 in)	47 of 100 (Notable)
Hazelmere	Australia	Record daily precipitation	68.5 mm (2.7 in)	45 of 100 (Notable)
Torungen Fyr	Norway	Record daily precipitation	47.2 mm (1.9 in)	45 of 100 (Notable)
McCall	United States	Record daily snowfall	5.1 cm (2.0 in)	45 of 100 (Notable)
Tizi Ouzou	Algeria	Record daily precipitation	30.0 mm (1.2 in)	44 of 100 (Notable)
Rollingstone	Australia	Record daily precipitation	76.0 mm (3.0 in)	44 of 100 (Notable)
Nevertire (Clyde St)	Australia	Record daily precipitation	50.2 mm (2.0 in)	44 of 100 (Notable)
Trangie Research Station AWS	Australia	Record daily precipitation	41.4 mm (1.6 in)	44 of 100 (Notable)
Coolamon Post Office	Australia	Record daily precipitation	34.0 mm (1.3 in)	44 of 100 (Notable)
Lindesnes Fyr	Norway	Record daily precipitation	63.8 mm (2.5 in)	44 of 100 (Notable)
Mecca Fire STN	United States	Record high minimum temperature	22.2 C (72.0 F)	44 of 100 (Notable)
Nevelsk	Russia	Record daily precipitation	44.9 mm (1.8 in)	43 of 100 (Notable)
Prospect 2 SW	United States	Record daily precipitation	41.1 mm (1.6 in)	43 of 100 (Notable)
Kangaroo Hills Station	Australia	Record daily precipitation	39.5 mm (1.6 in)	42 of 100 (Notable)
Kota Kinabalu Intl	Malaysia	Record daily precipitation	113.0 mm (4.4 in)	42 of 100 (Notable)
Pahoa 65	United States	Record daily precipitation	98.3 mm (3.9 in)	42 of 100 (Notable)
Chandbali	India	Record daily precipitation	119.9 mm (4.7 in)	41 of 100 (Notable)
Williston Sloulin Fld	United States	Record high maximum temperature	26.7 C (80.1 F)	41 of 100 (Notable)
Puri	India	Record daily precipitation	157.0 mm (6.2 in)	40 of 100 (Notable)
Eurobin	Australia	Record daily precipitation	72.0 mm (2.8 in)	39 of 100 (Notable)
Cedarville	United States	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Mount Leonard Station	Australia	Record daily precipitation	32.0 mm (1.3 in)	38 of 100 (Notable)
Tullamore (Old Post Office)	Australia	Record daily precipitation	32.0 mm (1.3 in)	38 of 100 (Notable)
Wilmatha (Wanganui)	Australia	Record daily precipitation	36.6 mm (1.4 in)	38 of 100 (Notable)
Myrtleford (Ovens Research Sta	Australia	Record daily precipitation	66.8 mm (2.6 in)	38 of 100 (Notable)
Riddle	United States	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Mutarnee Store	Australia	Record daily precipitation	58.0 mm (2.3 in)	36 of 100 (Notable)
Forbes (Muddy Water)	Australia	Record daily precipitation	37.0 mm (1.5 in)	36 of 100 (Notable)
Powers	United States	Record daily precipitation	47.5 mm (1.9 in)	36 of 100 (Notable)
Bison	United States	Record high maximum temperature	28.9 C (84.0 F)	36 of 100 (Notable)
Philip AP	United States	Record high minimum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Condobolin Ag Research STN	Australia	Record daily precipitation	36.5 mm (1.4 in)	35 of 100 (Notable)
Trinidad	United States	Record high minimum temperature	16.1 C (61.0 F)	35 of 100 (Notable)
Mc Intosh 6 SE	United States	Record high maximum temperature	27.2 C (81.0 F)	35 of 100 (Notable)
Marra Creek (Womboin)	Australia	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Cuguevka	Russia	Record high minimum temperature	5.3 C (41.5 F)	34 of 100 (Routine)
Bison	United States	Record high minimum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Nome AP	United States	Record daily snowfall	6.4 cm (2.5 in)	34 of 100 (Routine)
Horse Shoe Bend	Australia	Record daily precipitation	88.6 mm (3.5 in)	33 of 100 (Routine)
Tawonga	Australia	Record daily precipitation	70.0 mm (2.8 in)	33 of 100 (Routine)
Veenhuizen (D)	Netherlands	Record daily precipitation	26.0 mm (1.0 in)	33 of 100 (Routine)
Lemmon	United States	Record high maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Louth (Bloxham Street)	Australia	Record daily precipitation	27.4 mm (1.1 in)	32 of 100 (Routine)
Bhubaneswar	India	Record daily precipitation	82.0 mm (3.2 in)	32 of 100 (Routine)
Drobeta Turnu Severin	Romania	Record high maximum temperature	29.1 C (84.4 F)	32 of 100 (Routine)

Counts by Type and Timescale

602 records

Records set or tied on 20 October 2017 by type: Highest daily maximum 154, Lowest daily maximum 46, Highest daily minimum 149, Lowest daily minimum 18, Heaviest daily rainfall 219, Heaviest daily snowfall 12, Deepest snow cover 4.

Records on 20 October 2017 by type
Record type	Records
Highest daily maximum	154
Lowest daily maximum	46
Highest daily minimum	149
Lowest daily minimum	18
Heaviest daily rainfall	219
Heaviest daily snowfall	12
Deepest snow cover	4

Records on 20 October 2017 by timescale: all-time 1, monthly 16, daily 585.

How Much Records Were Beaten By

484 broken records

Margins by which the 484 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 114.0. Ties are not counted.

Top 20 by Significance

20 October 2017

Top 20 records on 20 October 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 2017	Wanaaring Post Office, AU	daily rain	70.1 mm (2.8 in)	50.5 mm (2.0 in)	126 years	80 of 100 (Exceptional)
20 October 2017	Nevertire (Beverley), AU	daily rain	55.6 mm (2.2 in)	32.7 mm (1.3 in)	82 years	70 of 100 (Major)
20 October 2017	Hungerford, AU	daily rain	43.0 mm (1.7 in)	23.7 mm (0.9 in)	111 years	65 of 100 (Major)
20 October 2017	Cjulbju, RU	daily rain	27.9 mm (1.1 in)	23.8 mm (0.9 in)	54 years	62 of 100 (Major)
20 October 2017	Dandaloo (Kelvin), AU	daily rain	55.0 mm (2.2 in)	29.9 mm (1.2 in)	55 years	60 of 100 (Major)
20 October 2017	Bambaroo, AU	daily rain	65.0 mm (2.6 in)	43.9 mm (1.7 in)	48 years	56 of 100 (Notable)
20 October 2017	Mount Margaret, AU	daily rain	32.0 mm (1.3 in)	18.8 mm (0.7 in)	92 years	55 of 100 (Notable)
20 October 2017	Trangie (Old Bundemar), AU	daily rain	40.0 mm (1.6 in)	15.1 mm (0.6 in)	118 years	55 of 100 (Notable)
20 October 2017	Nyngan (Mudall), AU	monthly rain	59.6 mm (2.3 in)	3.7 mm (0.15 in)	122 years	54 of 100 (Notable)
20 October 2017	Lansdown Csiro, AU	monthly rain	79.4 mm (3.1 in)	26.0 mm (1.0 in)	41 years	51 of 100 (Notable)
20 October 2017	Corowa Airport, AU	daily rain	47.6 mm (1.9 in)	18.9 mm (0.7 in)	58 years	51 of 100 (Notable)
20 October 2017	Eromanga - Webber St, AU	monthly rain	65.0 mm (2.6 in)	16.0 mm (0.6 in)	41 years	50 of 100 (Notable)
20 October 2017	Lemmer (Gemaal Buma), NL	daily rain	33.1 mm (1.3 in)	16.8 mm (0.7 in)	36 years	50 of 100 (Notable)
20 October 2017	Lands End Station, AU	daily rain	56.2 mm (2.2 in)	32.6 mm (1.3 in)	42 years	48 of 100 (Notable)
20 October 2017	Majors Creek, AU	daily rain	77.2 mm (3.0 in)	67.2 mm (2.6 in)	2 years	48 of 100 (Notable)
20 October 2017	Yabulu Qld Nickel, AU	daily rain	51.4 mm (2.0 in)	29.8 mm (1.2 in)	72 years	47 of 100 (Notable)
20 October 2017	Hazelmere, AU	daily rain	68.5 mm (2.7 in)	48.5 mm (1.9 in)	4 years	45 of 100 (Notable)
20 October 2017	Torungen Fyr, NO	daily rain	47.2 mm (1.9 in)	19.0 mm (0.7 in)	51 years	45 of 100 (Notable)
20 October 2017	McCall, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	108 years	45 of 100 (Notable)
20 October 2017	Tizi Ouzou, DZ	daily rain	30.0 mm (1.2 in)	6.0 mm (0.24 in)	123 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

1806 to 2017

Records set or tied on this calendar date in each year from 1806 to 2017. 2017 had 602 records.

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

Records on 10-20 in each year
Year	Records
1806	1
1835	1
1844	1
1846	1
1847	2
1851	1
1852	1
1858	1
1863	2
1864	2
1866	3
1867	1
1868	2
1872	2
1874	2
1875	3
1876	2
1877	1
1878	1
1880	3
1881	2
1884	1
1885	1
1886	1
1887	1
1888	6
1891	4
1892	4
1893	1
1894	3
1895	4
1896	9
1897	2
1898	7
1899	1
1900	8
1901	7
1902	5
1903	9
1904	13
1905	22
1906	28
1907	32
1908	26
1909	17
1910	31
1911	16
1912	6
1913	38
1914	16
1915	20
1916	72
1917	201
1918	34
1919	19
1920	81
1921	68
1922	83
1923	96
1924	182
1925	247
1926	147
1927	283
1928	92
1929	129
1930	672
1931	125
1932	331
1933	675
1934	422
1935	390
1936	370
1937	189
1938	231
1939	367
1940	757
1941	459
1942	152
1943	501
1944	288
1945	363
1946	310
1947	1,494
1948	320
1949	1,084
1950	619
1951	279
1952	520
1953	1,057
1954	262
1955	529
1956	283
1957	440
1958	461
1959	451
1960	671
1961	479
1962	733
1963	765
1964	598
1965	340
1966	857
1967	511
1968	244
1969	607
1970	710
1971	606
1972	1,724
1973	878
1974	1,122
1975	587
1976	1,304
1977	467
1978	508
1979	1,647
1980	350
1981	1,083
1982	1,191
1983	944
1984	1,562
1985	835
1986	823
1987	590
1988	737
1989	2,092
1990	609
1991	971
1992	1,174
1993	1,238
1994	650
1995	703
1996	1,417
1997	949
1998	683
1999	603
2000	737
2001	589
2002	985
2003	1,761
2004	1,861
2005	1,092
2006	1,170
2007	923
2008	477
2009	786
2010	539
2011	785
2012	945
2013	592
2014	851
2015	523
2016	947
2017	602
2018	394
2019	744
2020	1,010
2021	900
2022	834
2023	1,468
2024	707
2025	326

Download the Data

Data for records on 2017-10-20: 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 2026-10-16 (16 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	452
20 to 40	22
40 to 60	7
60 to 80	2
80 to 100	0
100 to 120	1