Weather Records on 12 July 1966

614 weather records were set or tied worldwide on 12 July 1966. Highest significance: Norwalk Wwtp, US.

Key Facts for 12 July 1966

On 12 July 1966, 614 weather records were set or tied at long-record stations worldwide.
385 were record highs and 91 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 10 monthly and 599 daily.
Norwalk Wwtp set an all-time record daily precipitation of 176.0 mm (6.9 in) on 12 July 1966.
Across 158 earlier years (1796 to 2026) the same calendar date averaged 451 records.

Record Map

614 stations

614 station records on 12 July 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 July 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Norwalk Wwtp	United States	Record daily precipitation	176.0 mm (6.9 in)	72 of 100 (Major)
Put-In-Bay	United States	Record daily precipitation	122.7 mm (4.8 in)	61 of 100 (Major)
Bucyrus	United States	Record daily precipitation	73.7 mm (2.9 in)	60 of 100 (Major)
Tambe (Itambe)	Brazil	Record daily precipitation	95.2 mm (3.7 in)	51 of 100 (Notable)
Leamington	Canada	Record daily precipitation	71.4 mm (2.8 in)	51 of 100 (Notable)
Ashland 2 SW	United States	Record daily precipitation	93.7 mm (3.7 in)	48 of 100 (Notable)
Findlay Wpcc	United States	Record daily precipitation	95.5 mm (3.8 in)	48 of 100 (Notable)
Harrow Cda	Canada	Record daily precipitation	71.6 mm (2.8 in)	47 of 100 (Notable)
Mott	United States	Record daily precipitation	41.4 mm (1.6 in)	46 of 100 (Notable)
Athens 5 NW	United States	Record daily precipitation	92.7 mm (3.6 in)	44 of 100 (Notable)
Fremont	United States	Record daily precipitation	112.8 mm (4.4 in)	43 of 100 (Notable)
Mt Clemens Ang Base	United States	Record daily precipitation	34.5 mm (1.4 in)	43 of 100 (Notable)
Cambridge	United States	Record daily precipitation	67.3 mm (2.6 in)	40 of 100 (Notable)
Sandusky	United States	Record daily precipitation	152.7 mm (6.0 in)	38 of 100 (Notable)
Scott	United States	Record high minimum temperature	27.2 C (81.0 F)	36 of 100 (Notable)
W Pt	United States	Record high maximum temperature	39.4 C (102.9 F)	36 of 100 (Notable)
Lemmon	United States	Record daily precipitation	72.9 mm (2.9 in)	36 of 100 (Notable)
Pelee Island	Canada	Record daily precipitation	66.0 mm (2.6 in)	34 of 100 (Routine)
Moscow U of I	United States	Record low minimum temperature	2.2 C (36.0 F)	34 of 100 (Routine)
Yates Ctr	United States	Record high minimum temperature	26.1 C (79.0 F)	34 of 100 (Routine)
Ukiah	United States	Record low maximum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Ness City	United States	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Charlotte	United States	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Amos	Canada	Record daily precipitation	39.1 mm (1.5 in)	32 of 100 (Routine)
Kropacevo	Russia	Record daily precipitation	48.6 mm (1.9 in)	32 of 100 (Routine)
Tuscola	United States	Record high minimum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Newkirk 5NE	United States	Record high minimum temperature	27.8 C (82.0 F)	32 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record daily precipitation	28.8 mm (1.1 in)	31 of 100 (Routine)
Milford Gm Proving Ground	United States	Record daily precipitation	44.2 mm (1.7 in)	31 of 100 (Routine)
Monroe	United States	Record daily precipitation	52.8 mm (2.1 in)	31 of 100 (Routine)
Verhojansk	Russia	Record low minimum temperature	0.8 C (33.4 F)	30 of 100 (Routine)
Minneapolis	United States	Record high minimum temperature	26.7 C (80.1 F)	30 of 100 (Routine)
Wellston Tippy Dam	United States	Record daily precipitation	33.5 mm (1.3 in)	30 of 100 (Routine)
Kenton	United States	Record daily precipitation	56.6 mm (2.2 in)	30 of 100 (Routine)
Cloud Chief 2 SE	United States	Record high minimum temperature	26.1 C (79.0 F)	30 of 100 (Routine)
Fond du Lac Wwtp	United States	Record high minimum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Ny City Cntrl Park	United States	Record high maximum temperature	37.2 C (99.0 F)	30 of 100 (Routine)
De Funiak Springs 1 E	United States	Record low minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Geneseo	United States	Record high maximum temperature	36.7 C (98.1 F)	29 of 100 (Routine)
Collegeville St John's	United States	Record daily precipitation	32.0 mm (1.3 in)	29 of 100 (Routine)
Beatrice	United States	Record high minimum temperature	27.2 C (81.0 F)	29 of 100 (Routine)
N Loup	United States	Record high minimum temperature	23.3 C (73.9 F)	29 of 100 (Routine)
Bedford Hills	United States	Record high maximum temperature	37.8 C (100.0 F)	29 of 100 (Routine)
Plymouth 2 WSW	United States	Record daily precipitation	40.6 mm (1.6 in)	29 of 100 (Routine)
Newport News Press Bld	United States	Record high minimum temperature	25.6 C (78.1 F)	29 of 100 (Routine)
Rantoul	United States	Record high minimum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Hebron	United States	Record high minimum temperature	26.7 C (80.1 F)	28 of 100 (Routine)
Tuckerton 2 NE	United States	Record high maximum temperature	36.7 C (98.1 F)	28 of 100 (Routine)
Trois Rivieres	Canada	Record daily precipitation	31.8 mm (1.3 in)	27 of 100 (Routine)
Akhty	Russia	Record high minimum temperature	20.2 C (68.4 F)	27 of 100 (Routine)
Albion	United States	Record high minimum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
High Brg Lock 7	United States	Record daily precipitation	43.4 mm (1.7 in)	27 of 100 (Routine)
State UNIV	United States	Record daily precipitation	35.1 mm (1.4 in)	27 of 100 (Routine)
Coshocton Wpc Plt	United States	Record daily precipitation	36.6 mm (1.4 in)	27 of 100 (Routine)
Mather 3 NW	United States	Record high minimum temperature	22.2 C (72.0 F)	27 of 100 (Routine)
Huntingdon	Canada	Record high minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Petrun	Russia	Record high minimum temperature	17.7 C (63.9 F)	26 of 100 (Routine)
Centerville Ph	United States	Record low maximum temperature	24.4 C (75.9 F)	26 of 100 (Routine)
Du Quoin 4 SE	United States	Record high minimum temperature	25.6 C (78.1 F)	26 of 100 (Routine)
Hoopeston	United States	Record high minimum temperature	25.0 C (77.0 F)	26 of 100 (Routine)

Counts by Type and Timescale

614 records

Records set or tied on 12 July 1966 by type: Highest daily maximum 102, Lowest daily maximum 51, Highest daily minimum 283, Lowest daily minimum 40, Heaviest daily rainfall 138.

Records on 12 July 1966 by type
Record type	Records
Highest daily maximum	102
Lowest daily maximum	51
Highest daily minimum	283
Lowest daily minimum	40
Heaviest daily rainfall	138
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 July 1966 by timescale: all-time 5, monthly 10, daily 599.

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 69.8. Ties are not counted.

Top 20 by Significance

12 July 1966

Top 20 records on 12 July 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 July 1966	Norwalk Wwtp, US	all-time rain	176.0 mm (6.9 in)	64.7 mm (2.5 in)	17 years	72 of 100 (Major)
12 July 1966	Put-In-Bay, US	monthly rain	122.7 mm (4.8 in)	69.6 mm (2.7 in)	23 years	61 of 100 (Major)
12 July 1966	Bucyrus, US	daily rain	73.7 mm (2.9 in)	49.6 mm (2.0 in)	45 years	60 of 100 (Major)
12 July 1966	Tambe (Itambe), BR	daily rain	95.2 mm (3.7 in)	39.2 mm (1.5 in)	49 years	51 of 100 (Notable)
12 July 1966	Leamington, CA	daily rain	71.4 mm (2.8 in)	51.8 mm (2.0 in)	23 years	51 of 100 (Notable)
12 July 1966	Ashland 2 SW, US	daily rain	93.7 mm (3.7 in)	69.8 mm (2.7 in)	17 years	48 of 100 (Notable)
12 July 1966	Findlay Wpcc, US	daily rain	95.5 mm (3.8 in)	45.7 mm (1.8 in)	17 years	48 of 100 (Notable)
12 July 1966	Harrow Cda, CA	daily rain	71.6 mm (2.8 in)	59.2 mm (2.3 in)	8 years	47 of 100 (Notable)
12 July 1966	Mott, US	daily rain	41.4 mm (1.6 in)	30.2 mm (1.2 in)	23 years	46 of 100 (Notable)
12 July 1966	Athens 5 NW, US	monthly rain	92.7 mm (3.6 in)	25.9 mm (1.0 in)	18 years	44 of 100 (Notable)
12 July 1966	Fremont, US	all-time rain	112.8 mm (4.4 in)	5.6 mm (0.22 in)	46 years	43 of 100 (Notable)
12 July 1966	Mt Clemens Ang Base, US	daily rain	34.5 mm (1.4 in)	21.8 mm (0.9 in)	56 years	43 of 100 (Notable)
12 July 1966	Cambridge, US	daily rain	67.3 mm (2.6 in)	39.6 mm (1.6 in)	8 years	40 of 100 (Notable)
12 July 1966	Sandusky, US	all-time rain	152.7 mm (6.0 in)	9.7 mm (0.38 in)	29 years	38 of 100 (Notable)
12 July 1966	Scott, US	all-time high min	27.2 C (81.0 F)	0.5 C (0.9 F)	33 years	36 of 100 (Notable)
12 July 1966	W Pt, US	daily high max	39.4 C (102.9 F)	2.7 C (4.9 F)	73 years	36 of 100 (Notable)
12 July 1966	Lemmon, US	monthly rain	72.9 mm (2.9 in)	12.2 mm (0.5 in)	25 years	36 of 100 (Notable)
12 July 1966	Pelee Island, CA	daily rain	66.0 mm (2.6 in)	15.2 mm (0.6 in)	56 years	34 of 100 (Routine)
12 July 1966	Moscow U of I, US	daily low min	2.2 C (36.0 F)	3.9 C (7.0 F)	56 years	34 of 100 (Routine)
12 July 1966	Yates Ctr, US	daily high min	26.1 C (79.0 F)	3.9 C (7.0 F)	47 years	34 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

1796 to 1966

Records set or tied on this calendar date in each year from 1796 to 1966. 1966 had 614 records.

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

Records on 07-12 in each year
Year	Records
1796	1
1816	1
1821	2
1841	1
1847	2
1848	2
1850	3
1851	1
1858	1
1860	2
1866	1
1870	2
1873	1
1874	2
1875	1
1876	2
1879	1
1880	2
1882	1
1886	4
1887	1
1888	4
1889	1
1890	4
1891	3
1892	2
1893	1
1894	4
1895	7
1896	3
1897	2
1898	1
1900	2
1901	5
1902	2
1903	11
1904	13
1905	28
1906	22
1907	19
1908	46
1909	24
1910	12
1911	93
1912	19
1913	20
1914	57
1915	16
1916	39
1917	163
1918	99
1919	56
1920	37
1921	94
1922	42
1923	85
1924	68
1925	231
1926	272
1927	84
1928	79
1929	137
1930	561
1931	309
1932	305
1933	609
1934	348
1935	379
1936	1,082
1937	353
1938	257
1939	509
1940	623
1941	796
1942	363
1943	421
1944	446
1945	1,118
1946	234
1947	319
1948	379
1949	357
1950	485
1951	765
1952	680
1953	688
1954	907
1955	263
1956	474
1957	381
1958	434
1959	459
1960	466
1961	606
1962	447
1963	418
1964	898
1965	457
1966	614
1967	502
1968	466
1969	745
1970	298
1971	538
1972	716
1973	633
1974	617
1975	1,321
1976	812
1977	377
1978	635
1979	555
1980	998
1981	645
1982	526
1983	955
1984	871
1985	558
1986	1,015
1987	1,189
1988	961
1989	559
1990	1,489
1991	1,028
1992	1,167
1993	1,443
1994	904
1995	1,070
1996	964
1997	800
1998	1,244
1999	1,397
2000	796
2001	856
2002	1,537
2003	910
2004	799
2005	1,068
2006	1,038
2007	749
2008	719
2009	707
2010	1,450
2011	1,468
2012	979
2013	570
2014	437
2015	618
2016	740
2017	586
2018	398
2019	598
2020	875
2021	830
2022	507
2023	839
2024	968
2025	567
2026	1,100

Download the Data

Data for records on 1966-07-12: 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 10	377
10 to 20	25
20 to 30	8
30 to 40	3
40 to 50	2
50 to 60	2
60 to 70	3