Weather Records on 23 October 1966

625 weather records were set or tied worldwide on 23 October 1966. Highest significance: Roermond, NL.

Key Facts for 23 October 1966

On 23 October 1966, 625 weather records were set or tied at long-record stations worldwide.
70 were record highs and 115 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 32 monthly and 593 daily.
Roermond set a daily record precipitation of 30.3 mm (1.2 in) on 23 October 1966.
Across 160 earlier years (1795 to 2025) the same calendar date averaged 462 records.

Record Map

625 stations

625 station records on 23 October 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 October 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Roermond	Netherlands	Record daily precipitation	30.3 mm (1.2 in)	73 of 100 (Major)
Pindathuna	Australia	Record daily precipitation	47.5 mm (1.9 in)	71 of 100 (Major)
Toodyay	Australia	Record daily precipitation	31.0 mm (1.2 in)	66 of 100 (Major)
Grass Valley	Australia	Record daily precipitation	30.0 mm (1.2 in)	64 of 100 (Major)
Thundelarra	Australia	Record daily precipitation	36.8 mm (1.4 in)	63 of 100 (Major)
Bryah	Australia	Record daily precipitation	37.1 mm (1.5 in)	62 of 100 (Major)
Gabyon	Australia	Record daily precipitation	47.0 mm (1.9 in)	61 of 100 (Major)
Wongan Hills	Australia	Record daily precipitation	26.9 mm (1.1 in)	61 of 100 (Major)
Chengannur	India	Record daily precipitation	137.2 mm (5.4 in)	61 of 100 (Major)
Berkshire Valley	Australia	Record daily precipitation	27.7 mm (1.1 in)	60 of 100 (Major)
Dalwallinu Comparison	Australia	Record daily precipitation	25.7 mm (1.0 in)	60 of 100 (Major)
Aldervale	Australia	Record daily precipitation	38.1 mm (1.5 in)	60 of 100 (Major)
Bonnie Rock	Australia	Record daily precipitation	35.6 mm (1.4 in)	60 of 100 (Major)
Northam	Australia	Record daily precipitation	37.6 mm (1.5 in)	59 of 100 (Notable)
Bonn-Friesdorf	Germany	Record daily precipitation	40.8 mm (1.6 in)	59 of 100 (Notable)
Bolgart	Australia	Record daily precipitation	30.7 mm (1.2 in)	58 of 100 (Notable)
Wialki North	Australia	Record daily precipitation	38.1 mm (1.5 in)	58 of 100 (Notable)
York Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	58 of 100 (Notable)
Arnsberg	Germany	Record daily precipitation	39.1 mm (1.5 in)	58 of 100 (Notable)
Aachen	Germany	Record daily precipitation	44.6 mm (1.8 in)	57 of 100 (Notable)
Cardonia	Australia	Record daily precipitation	27.9 mm (1.1 in)	56 of 100 (Notable)
Weilerswist-Lommersum	Germany	Record daily precipitation	41.7 mm (1.6 in)	56 of 100 (Notable)
Wurarga	Australia	Record daily precipitation	28.4 mm (1.1 in)	55 of 100 (Notable)
Casuarina Vale	Australia	Record daily precipitation	28.4 mm (1.1 in)	55 of 100 (Notable)
Wattening	Australia	Record daily precipitation	30.5 mm (1.2 in)	55 of 100 (Notable)
Altastenberg	Germany	Record daily precipitation	46.5 mm (1.8 in)	55 of 100 (Notable)
Lake Hinds	Australia	Record daily precipitation	34.3 mm (1.4 in)	54 of 100 (Notable)
Arundel	Australia	Record daily precipitation	30.2 mm (1.2 in)	54 of 100 (Notable)
Muresk Agric.College	Australia	Record daily precipitation	28.2 mm (1.1 in)	54 of 100 (Notable)
Jingalup	Australia	Record daily precipitation	29.2 mm (1.1 in)	54 of 100 (Notable)
Noongall	Australia	Record daily precipitation	31.2 mm (1.2 in)	53 of 100 (Notable)
Lake Muir	Australia	Record daily precipitation	31.8 mm (1.3 in)	53 of 100 (Notable)
Gilserberg-Moischeid	Germany	Record daily precipitation	40.2 mm (1.6 in)	53 of 100 (Notable)
Mayen	Germany	Record daily precipitation	25.5 mm (1.0 in)	53 of 100 (Notable)
Neukirchen-Hauptschwenda	Germany	Record daily precipitation	47.5 mm (1.9 in)	53 of 100 (Notable)
Gottingen	Germany	Record daily precipitation	25.3 mm (1.0 in)	51 of 100 (Notable)
Iserlohn-Westig	Germany	Record daily precipitation	35.9 mm (1.4 in)	51 of 100 (Notable)
Perillup	Australia	Record daily precipitation	25.4 mm (1.0 in)	50 of 100 (Notable)
Cunderdin	Australia	Record daily precipitation	26.9 mm (1.1 in)	50 of 100 (Notable)
Codg Codgen	Australia	Record daily precipitation	29.5 mm (1.2 in)	50 of 100 (Notable)
Boolardy	Australia	Record daily precipitation	26.2 mm (1.0 in)	49 of 100 (Notable)
Newbicup	Australia	Record daily precipitation	27.4 mm (1.1 in)	49 of 100 (Notable)
Wonnenup	Australia	Record daily precipitation	33.3 mm (1.3 in)	49 of 100 (Notable)
Telkwa	Canada	Record daily precipitation	29.2 mm (1.1 in)	49 of 100 (Notable)
Lennestadt-Theten	Germany	Record daily precipitation	49.3 mm (1.9 in)	49 of 100 (Notable)
Three Rivers	Australia	Record daily precipitation	25.4 mm (1.0 in)	48 of 100 (Notable)
Tootra	Australia	Record daily precipitation	30.0 mm (1.2 in)	48 of 100 (Notable)
Hawthornden	Australia	Record daily precipitation	35.8 mm (1.4 in)	47 of 100 (Notable)
Wynrock	Australia	Record daily precipitation	27.2 mm (1.1 in)	46 of 100 (Notable)
Koln-Bonn	Germany	Record daily precipitation	38.3 mm (1.5 in)	46 of 100 (Notable)
Buntine East	Australia	Record daily precipitation	26.9 mm (1.1 in)	44 of 100 (Notable)
Bad Lauchstadt	Germany	Record daily precipitation	26.9 mm (1.1 in)	44 of 100 (Notable)
Dillenburg	Germany	Record daily precipitation	26.6 mm (1.0 in)	43 of 100 (Notable)
Milgun	Australia	Record daily precipitation	41.1 mm (1.6 in)	40 of 100 (Notable)
Moulyinning	Australia	Record daily precipitation	27.9 mm (1.1 in)	40 of 100 (Notable)
Artern	Germany	Record daily precipitation	30.1 mm (1.2 in)	40 of 100 (Notable)
Jurokine	Australia	Record daily precipitation	35.8 mm (1.4 in)	39 of 100 (Notable)
Remscheid-Lennep	Germany	Record daily precipitation	57.2 mm (2.3 in)	39 of 100 (Notable)
Solingen-Hohenscheid	Germany	Record daily precipitation	41.2 mm (1.6 in)	38 of 100 (Notable)
Huntingdon	Canada	Record high minimum temperature	11.1 C (52.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

625 records

Records set or tied on 23 October 1966 by type: Highest daily maximum 29, Lowest daily maximum 45, Highest daily minimum 41, Lowest daily minimum 70, Heaviest daily rainfall 432, Heaviest daily snowfall 2, Deepest snow cover 6.

Records on 23 October 1966 by type
Record type	Records
Highest daily maximum	29
Lowest daily maximum	45
Highest daily minimum	41
Lowest daily minimum	70
Heaviest daily rainfall	432
Heaviest daily snowfall	2
Deepest snow cover	6

Records on 23 October 1966 by timescale: all-time 0, monthly 32, daily 593.

How Much Records Were Beaten By

580 broken records

Margins by which the 580 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 110.0. Ties are not counted.

Top 20 by Significance

23 October 1966

Top 20 records on 23 October 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 October 1966	Roermond, NL	daily rain	30.3 mm (1.2 in)	18.6 mm (0.7 in)	92 years	73 of 100 (Major)
23 October 1966	Pindathuna, AU	monthly rain	47.5 mm (1.9 in)	21.8 mm (0.9 in)	50 years	71 of 100 (Major)
23 October 1966	Toodyay, AU	daily rain	31.0 mm (1.2 in)	24.9 mm (1.0 in)	56 years	66 of 100 (Major)
23 October 1966	Grass Valley, AU	daily rain	30.0 mm (1.2 in)	23.1 mm (0.9 in)	56 years	64 of 100 (Major)
23 October 1966	Thundelarra, AU	daily rain	36.8 mm (1.4 in)	32.2 mm (1.3 in)	56 years	63 of 100 (Major)
23 October 1966	Bryah, AU	monthly rain	37.1 mm (1.5 in)	28.7 mm (1.1 in)	26 years	62 of 100 (Major)
23 October 1966	Gabyon, AU	monthly rain	47.0 mm (1.9 in)	16.5 mm (0.6 in)	50 years	61 of 100 (Major)
23 October 1966	Wongan Hills, AU	daily rain	26.9 mm (1.1 in)	16.7 mm (0.7 in)	52 years	61 of 100 (Major)
23 October 1966	Chengannur, IN	daily rain	137.2 mm (5.4 in)	83.1 mm (3.3 in)	64 years	61 of 100 (Major)
23 October 1966	Berkshire Valley, AU	daily rain	27.7 mm (1.1 in)	19.1 mm (0.8 in)	56 years	60 of 100 (Major)
23 October 1966	Dalwallinu Comparison, AU	daily rain	25.7 mm (1.0 in)	21.6 mm (0.9 in)	52 years	60 of 100 (Major)
23 October 1966	Aldervale, AU	daily rain	38.1 mm (1.5 in)	25.7 mm (1.0 in)	49 years	60 of 100 (Major)
23 October 1966	Bonnie Rock, AU	monthly rain	35.6 mm (1.4 in)	19.6 mm (0.8 in)	26 years	60 of 100 (Major)
23 October 1966	Northam, AU	daily rain	37.6 mm (1.5 in)	32.8 mm (1.3 in)	33 years	59 of 100 (Notable)
23 October 1966	Bonn-Friesdorf, DE	monthly rain	40.8 mm (1.6 in)	15.3 mm (0.6 in)	27 years	59 of 100 (Notable)
23 October 1966	Bolgart, AU	daily rain	30.7 mm (1.2 in)	26.4 mm (1.0 in)	40 years	58 of 100 (Notable)
23 October 1966	Wialki North, AU	monthly rain	38.1 mm (1.5 in)	15.5 mm (0.6 in)	18 years	58 of 100 (Notable)
23 October 1966	York Post Office, AU	daily rain	27.9 mm (1.1 in)	25.9 mm (1.0 in)	31 years	58 of 100 (Notable)
23 October 1966	Arnsberg, DE	daily rain	39.1 mm (1.5 in)	22.2 mm (0.9 in)	44 years	58 of 100 (Notable)
23 October 1966	Aachen, DE	daily rain	44.6 mm (1.8 in)	29.6 mm (1.2 in)	35 years	57 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 1966

Records set or tied on this calendar date in each year from 1795 to 1966. 1966 had 625 records.

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

Records on 10-23 in each year
Year	Records
1795	1
1802	2
1843	1
1845	1
1850	1
1851	2
1855	1
1859	2
1861	1
1863	1
1865	2
1866	1
1869	3
1871	2
1872	1
1873	2
1876	2
1878	1
1880	7
1881	2
1882	1
1883	1
1885	2
1888	1
1889	2
1890	2
1891	8
1892	3
1893	3
1894	5
1895	4
1896	2
1897	3
1898	5
1899	4
1900	8
1901	7
1902	7
1903	10
1904	7
1905	15
1906	17
1907	5
1908	19
1909	12
1910	6
1911	40
1912	50
1913	38
1914	9
1915	167
1916	290
1917	62
1918	12
1919	42
1920	262
1921	58
1922	38
1923	165
1924	160
1925	191
1926	131
1927	266
1928	120
1929	352
1930	310
1931	353
1932	310
1933	241
1934	333
1935	519
1936	490
1937	816
1938	403
1939	717
1940	304
1941	499
1942	306
1943	446
1944	283
1945	533
1946	258
1947	631
1948	251
1949	432
1950	507
1951	626
1952	432
1953	373
1954	317
1955	266
1956	587
1957	1,266
1958	255
1959	682
1960	341
1961	329
1962	141
1963	1,297
1964	264
1965	330
1966	625
1967	297
1968	175
1969	1,200
1970	617
1971	705
1972	601
1973	712
1974	653
1975	1,028
1976	879
1977	578
1978	570
1979	1,094
1980	584
1981	1,502
1982	1,071
1983	853
1984	1,261
1985	846
1986	968
1987	694
1988	619
1989	1,363
1990	954
1991	1,232
1992	1,176
1993	670
1994	558
1995	1,471
1996	1,396
1997	1,172
1998	1,221
1999	1,011
2000	1,275
2001	1,091
2002	1,868
2003	1,952
2004	1,224
2005	679
2006	1,976
2007	1,673
2008	993
2009	838
2010	683
2011	701
2012	1,017
2013	754
2014	755
2015	760
2016	460
2017	603
2018	322
2019	459
2020	1,777
2021	298
2022	1,342
2023	544
2024	674
2025	343

Download the Data

Data for records on 1966-10-23: 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	526
20 to 40	49
40 to 60	1
60 to 80	0
80 to 100	3
100 to 120	1