Weather Records on 23 September 1966

528 weather records were set or tied worldwide on 23 September 1966. Highest significance: Portage des Roches, CA.

Key Facts for 23 September 1966

On 23 September 1966, 528 weather records were set or tied at long-record stations worldwide.
357 were record highs and 33 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 526 daily.
Portage des Roches set a daily record precipitation of 69.6 mm (2.7 in) on 23 September 1966.
Across 169 earlier years (1793 to 2026) the same calendar date averaged 431 records.

Record Map

528 stations

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

Weather records on 23 September 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Portage des Roches	Canada	Record daily precipitation	69.6 mm (2.7 in)	54 of 100 (Notable)
Chicoutimi	Canada	Record daily precipitation	44.7 mm (1.8 in)	53 of 100 (Notable)
El Carmen (Smn)	Mexico	Record daily precipitation	142.7 mm (5.6 in)	52 of 100 (Notable)
Arvida	Canada	Record daily precipitation	48.0 mm (1.9 in)	46 of 100 (Notable)
Suolovuopmi	Norway	Record snow depth	12.0 cm (4.7 in)	45 of 100 (Notable)
Mount Burr Forest Reserve	Australia	Record daily precipitation	29.0 mm (1.1 in)	44 of 100 (Notable)
Albanel	Canada	Record daily precipitation	31.5 mm (1.2 in)	43 of 100 (Notable)
Ben Lomond	South Africa	Record daily precipitation	26.0 mm (1.0 in)	35 of 100 (Notable)
Rolfontein	South Africa	Record daily precipitation	25.5 mm (1.0 in)	34 of 100 (Routine)
Enisejsk	Russia	Record high minimum temperature	11.5 C (52.7 F)	33 of 100 (Routine)
Normandin Cda	Canada	Record daily precipitation	29.2 mm (1.1 in)	31 of 100 (Routine)
Roberval Nord	Canada	Record daily precipitation	36.8 mm (1.4 in)	31 of 100 (Routine)
Taos	United States	Record high maximum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
Elberta	United States	Record high minimum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
Stuart	United States	Record low minimum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
Levan	United States	Record high maximum temperature	32.2 C (90.0 F)	30 of 100 (Routine)
Glacier Rs	United States	Record high minimum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Rosalia	United States	Record high maximum temperature	34.4 C (93.9 F)	29 of 100 (Routine)
Waterville	United States	Record high maximum temperature	31.7 C (89.1 F)	29 of 100 (Routine)
Mount McIntyre	Australia	Record daily precipitation	29.0 mm (1.1 in)	28 of 100 (Routine)
Goldfield	United States	Record high minimum temperature	16.7 C (62.1 F)	28 of 100 (Routine)
Castle Dale	United States	Record high maximum temperature	32.2 C (90.0 F)	28 of 100 (Routine)
Ft Duchesne	United States	Record high maximum temperature	32.2 C (90.0 F)	28 of 100 (Routine)
La Sal	United States	Record high minimum temperature	12.8 C (55.0 F)	28 of 100 (Routine)
Paragonah	United States	Record high maximum temperature	31.7 C (89.1 F)	28 of 100 (Routine)
Adaven	United States	Record high maximum temperature	33.9 C (93.0 F)	27 of 100 (Routine)
Richland	United States	Record high maximum temperature	35.0 C (95.0 F)	27 of 100 (Routine)
Snoqualmie Falls	United States	Record high minimum temperature	13.9 C (57.0 F)	27 of 100 (Routine)
Buffalo	United States	Record high maximum temperature	32.8 C (91.0 F)	27 of 100 (Routine)
Eagle FAA AP	United States	Record high maximum temperature	31.7 C (89.1 F)	27 of 100 (Routine)
Ely AP	United States	Record high minimum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Lewistown AP	United States	Record high maximum temperature	32.2 C (90.0 F)	27 of 100 (Routine)
Butte Bert Mooney AP	United States	Record high maximum temperature	29.4 C (84.9 F)	27 of 100 (Routine)
Seattle Urban Site	United States	Record high minimum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Burketown Post Office	Australia	Record high maximum temperature	37.2 C (99.0 F)	26 of 100 (Routine)
Ksara	Lebanon	Record high minimum temperature	19.0 C (66.2 F)	26 of 100 (Routine)
De Emigratie	South Africa	Record daily precipitation	26.1 mm (1.0 in)	26 of 100 (Routine)
Collbran	United States	Record high maximum temperature	31.1 C (88.0 F)	26 of 100 (Routine)
Bozeman Montana State UNIV	United States	Record high maximum temperature	30.0 C (86.0 F)	26 of 100 (Routine)
Lame Deer	United States	Record high maximum temperature	32.8 C (91.0 F)	26 of 100 (Routine)
Livingston	United States	Record high maximum temperature	30.0 C (86.0 F)	26 of 100 (Routine)
Virginia City	United States	Record high maximum temperature	28.9 C (84.0 F)	26 of 100 (Routine)
Hermiston 1 SE	United States	Record high maximum temperature	33.3 C (91.9 F)	26 of 100 (Routine)
Monticello 2E	United States	Record high maximum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Tooele	United States	Record high maximum temperature	30.6 C (87.1 F)	26 of 100 (Routine)
Ellensburg	United States	Record high minimum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Evanston 1 E	United States	Record high maximum temperature	28.3 C (82.9 F)	26 of 100 (Routine)
Colachel Salt Fa	India	Record daily precipitation	28.5 mm (1.1 in)	25 of 100 (Routine)
Onega	Russia	Record daily precipitation	29.6 mm (1.2 in)	25 of 100 (Routine)
Achinsk	Russia	Record high maximum temperature	23.0 C (73.4 F)	25 of 100 (Routine)
Bratsk	Russia	Record high minimum temperature	9.7 C (49.5 F)	25 of 100 (Routine)
Paonia 1SW	United States	Record high maximum temperature	31.1 C (88.0 F)	25 of 100 (Routine)
Idaho City	United States	Record high minimum temperature	8.3 C (46.9 F)	25 of 100 (Routine)
New Meadows Rs	United States	Record high maximum temperature	34.4 C (93.9 F)	25 of 100 (Routine)
Saint Maries	United States	Record high maximum temperature	34.4 C (93.9 F)	25 of 100 (Routine)
Twin Falls 2 NNE	United States	Record high maximum temperature	35.6 C (96.1 F)	25 of 100 (Routine)
Woodland	United States	Record daily precipitation	33.0 mm (1.3 in)	25 of 100 (Routine)
Wallowa	United States	Record high minimum temperature	10.0 C (50.0 F)	25 of 100 (Routine)
Elberta	United States	Record high maximum temperature	32.8 C (91.0 F)	25 of 100 (Routine)
Newport	United States	Record high minimum temperature	12.8 C (55.0 F)	25 of 100 (Routine)

Counts by Type and Timescale

528 records

Records set or tied on 23 September 1966 by type: Highest daily maximum 224, Lowest daily maximum 11, Highest daily minimum 133, Lowest daily minimum 22, Heaviest daily rainfall 136, Deepest snow cover 2.

Records on 23 September 1966 by type
Record type	Records
Highest daily maximum	224
Lowest daily maximum	11
Highest daily minimum	133
Lowest daily minimum	22
Heaviest daily rainfall	136
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 23 September 1966 by timescale: all-time 0, monthly 2, daily 526.

How Much Records Were Beaten By

420 broken records

Margins by which the 420 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.8. Ties are not counted.

Top 20 by Significance

23 September 1966

Top 20 records on 23 September 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 1966	Portage des Roches, CA	daily rain	69.6 mm (2.7 in)	40.4 mm (1.6 in)	35 years	54 of 100 (Notable)
23 September 1966	Chicoutimi, CA	daily rain	44.7 mm (1.8 in)	22.9 mm (0.9 in)	52 years	53 of 100 (Notable)
23 September 1966	El Carmen (Smn), MX	daily rain	142.7 mm (5.6 in)	83.8 mm (3.3 in)	35 years	52 of 100 (Notable)
23 September 1966	Arvida, CA	daily rain	48.0 mm (1.9 in)	33.5 mm (1.3 in)	16 years	46 of 100 (Notable)
23 September 1966	Suolovuopmi, NO	daily snow depth	12.0 cm (4.7 in)	8.0 cm (3.1 in)	59 years	45 of 100 (Notable)
23 September 1966	Mount Burr Forest Reserve, AU	daily rain	29.0 mm (1.1 in)	18.3 mm (0.7 in)	24 years	44 of 100 (Notable)
23 September 1966	Albanel, CA	daily rain	31.5 mm (1.2 in)	24.9 mm (1.0 in)	39 years	43 of 100 (Notable)
23 September 1966	Ben Lomond, ZA	daily rain	26.0 mm (1.0 in)	13.8 mm (0.5 in)	40 years	35 of 100 (Notable)
23 September 1966	Rolfontein, ZA	daily rain	25.5 mm (1.0 in)	10.0 mm (0.4 in)	60 years	34 of 100 (Routine)
23 September 1966	Enisejsk, RU	daily high min	11.5 C (52.7 F)	1.7 C (3.1 F)	71 years	33 of 100 (Routine)
23 September 1966	Normandin Cda, CA	daily rain	29.2 mm (1.1 in)	23.6 mm (0.9 in)	0 years	31 of 100 (Routine)
23 September 1966	Roberval Nord, CA	daily rain	36.8 mm (1.4 in)	8.9 mm (0.35 in)	49 years	31 of 100 (Routine)
23 September 1966	Taos, US	daily high max	30.0 C (86.0 F)	1.1 C (2.0 F)	72 years	31 of 100 (Routine)
23 September 1966	Elberta, US	daily high min	17.2 C (63.0 F)	3.3 C (5.9 F)	60 years	31 of 100 (Routine)
23 September 1966	Stuart, US	daily low min	18.9 C (66.0 F)	2.8 C (5.0 F)	29 years	30 of 100 (Routine)
23 September 1966	Levan, US	daily high max	32.2 C (90.0 F)	2.8 C (5.0 F)	60 years	30 of 100 (Routine)
23 September 1966	Glacier Rs, US	daily high min	13.9 C (57.0 F)	3.3 C (5.9 F)	51 years	30 of 100 (Routine)
23 September 1966	Rosalia, US	daily high max	34.4 C (93.9 F)	2.7 C (4.9 F)	60 years	29 of 100 (Routine)
23 September 1966	Waterville, US	daily high max	31.7 C (89.1 F)	2.3 C (4.1 F)	60 years	29 of 100 (Routine)
23 September 1966	Mount McIntyre, AU	daily rain	29.0 mm (1.1 in)	11.2 mm (0.4 in)	24 years	28 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 1966

Records set or tied on this calendar date in each year from 1793 to 1966. 1966 had 528 records.

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

Records on 09-23 in each year
Year	Records
1793	1
1796	1
1799	1
1804	1
1832	1
1835	1
1838	1
1842	3
1843	1
1845	2
1848	1
1849	1
1850	1
1851	2
1854	3
1855	1
1859	2
1864	1
1865	1
1866	1
1868	1
1871	1
1872	1
1874	1
1875	1
1876	1
1877	1
1881	4
1882	2
1885	1
1886	1
1887	1
1888	1
1889	3
1890	2
1891	1
1892	2
1893	4
1895	9
1896	5
1897	1
1898	2
1899	4
1900	4
1901	2
1902	6
1903	7
1904	19
1905	6
1906	6
1907	19
1908	19
1909	15
1910	8
1911	11
1912	15
1913	22
1914	29
1915	25
1916	324
1917	56
1918	34
1919	40
1920	44
1921	47
1922	34
1923	74
1924	194
1925	223
1926	459
1927	247
1928	382
1929	198
1930	472
1931	600
1932	383
1933	281
1934	361
1935	239
1936	377
1937	557
1938	389
1939	279
1940	374
1941	490
1942	557
1943	322
1944	381
1945	652
1946	623
1947	803
1948	259
1949	496
1950	267
1951	462
1952	432
1953	271
1954	324
1955	852
1956	299
1957	539
1958	641
1959	307
1960	470
1961	670
1962	344
1963	568
1964	322
1965	783
1966	528
1967	341
1968	481
1969	450
1970	1,457
1971	578
1972	461
1973	674
1974	1,543
1975	1,038
1976	463
1977	616
1978	500
1979	586
1980	1,037
1981	717
1982	775
1983	1,744
1984	1,121
1985	924
1986	740
1987	1,077
1988	653
1989	1,376
1990	702
1991	519
1992	976
1993	983
1994	1,140
1995	1,868
1996	809
1997	1,060
1998	1,326
1999	1,207
2000	2,026
2001	790
2002	930
2003	1,243
2004	986
2005	1,207
2006	1,509
2007	1,153
2008	835
2009	1,201
2010	1,360
2011	666
2012	785
2013	573
2014	595
2015	587
2016	774
2017	1,371
2018	693
2019	565
2020	618
2021	602
2022	551
2023	812
2024	499
2025	449
2026	384

Download the Data

Data for records on 1966-09-23: 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	412
20 to 40	5
40 to 60	1
60 to 80	0
80 to 100	2