Weather Records on 15 October 1966

1,265 weather records were set or tied worldwide on 15 October 1966. Highest significance: Cresco 1 NE, US.

Key Facts for 15 October 1966

On 15 October 1966, 1,265 weather records were set or tied at long-record stations worldwide.
117 were record highs and 540 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 31 monthly and 1,233 daily.
Cresco 1 NE set a monthly record daily precipitation of 113.0 mm (4.4 in) on 15 October 1966.
Across 159 earlier years (1794 to 2025) the same calendar date averaged 455 records.

Record Map

1,265 stations

1,265 station records on 15 October 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 October 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cresco 1 NE	United States	Record daily precipitation	113.0 mm (4.4 in)	71 of 100 (Major)
Minocqua	United States	Record daily precipitation	86.4 mm (3.4 in)	71 of 100 (Major)
New Ulm 2 SE	United States	Record daily precipitation	70.9 mm (2.8 in)	67 of 100 (Major)
Ramnagaram	India	Record daily precipitation	113.8 mm (4.5 in)	65 of 100 (Major)
Chatham Exp Fa	United States	Record daily precipitation	57.2 mm (2.3 in)	64 of 100 (Major)
Stillwater 1 SE	United States	Record daily precipitation	64.3 mm (2.5 in)	64 of 100 (Major)
Merrill	United States	Record daily precipitation	55.1 mm (2.2 in)	64 of 100 (Major)
Tomahawk Spirit Rsvr	United States	Record daily precipitation	68.8 mm (2.7 in)	64 of 100 (Major)
Shawano 2SSW	United States	Record daily precipitation	50.0 mm (2.0 in)	62 of 100 (Major)
Brownsville	United States	Record daily precipitation	143.0 mm (5.6 in)	62 of 100 (Major)
Stratton	United States	Record daily snowfall	17.8 cm (7.0 in)	59 of 100 (Notable)
Tracy	United States	Record daily precipitation	65.5 mm (2.6 in)	58 of 100 (Notable)
Caledonia	United States	Record daily precipitation	55.9 mm (2.2 in)	57 of 100 (Notable)
Grand Meadow	United States	Record daily precipitation	66.0 mm (2.6 in)	57 of 100 (Notable)
Rhinelander	United States	Record daily precipitation	51.6 mm (2.0 in)	57 of 100 (Notable)
Whitefish Pt	United States	Record daily precipitation	50.0 mm (2.0 in)	56 of 100 (Notable)
Hastings Dam 2	United States	Record daily precipitation	56.4 mm (2.2 in)	56 of 100 (Notable)
Maple Plain	United States	Record daily precipitation	61.7 mm (2.4 in)	56 of 100 (Notable)
Wellston Tippy Dam	United States	Record daily precipitation	49.3 mm (1.9 in)	55 of 100 (Notable)
Flambeau Rsvr	United States	Record daily precipitation	50.5 mm (2.0 in)	55 of 100 (Notable)
Mondovi	United States	Record daily precipitation	79.2 mm (3.1 in)	55 of 100 (Notable)
Rest Lake	United States	Record daily precipitation	58.7 mm (2.3 in)	55 of 100 (Notable)
Leeukop	South Africa	Record daily precipitation	48.5 mm (1.9 in)	54 of 100 (Notable)
Chaska	United States	Record daily precipitation	56.6 mm (2.2 in)	54 of 100 (Notable)
Stanley Wwtp	United States	Record daily precipitation	59.4 mm (2.3 in)	54 of 100 (Notable)
Simlapal	India	Record daily precipitation	133.1 mm (5.2 in)	53 of 100 (Notable)
Iron Mtn-Kingsford Wwtp	United States	Record daily precipitation	46.0 mm (1.8 in)	53 of 100 (Notable)
Amery	United States	Record daily precipitation	46.5 mm (1.8 in)	53 of 100 (Notable)
Laona 6 SW	United States	Record daily precipitation	41.7 mm (1.6 in)	53 of 100 (Notable)
Kapuskasing Cda	Canada	Record daily snowfall	20.8 cm (8.2 in)	52 of 100 (Notable)
Detour Village	United States	Record daily precipitation	29.2 mm (1.1 in)	52 of 100 (Notable)
Wakefield 3NW	United States	Record daily snowfall	12.2 cm (4.8 in)	52 of 100 (Notable)
Antigo	United States	Record daily precipitation	37.3 mm (1.5 in)	52 of 100 (Notable)
Cumberland	United States	Record daily precipitation	62.0 mm (2.4 in)	52 of 100 (Notable)
Chintamani	India	Record daily precipitation	134.6 mm (5.3 in)	51 of 100 (Notable)
Tiruppattur	India	Record daily precipitation	113.0 mm (4.4 in)	51 of 100 (Notable)
Salem	India	Record daily precipitation	135.6 mm (5.3 in)	51 of 100 (Notable)
Atwood	United States	Record daily snowfall	17.8 cm (7.0 in)	51 of 100 (Notable)
Munising	United States	Record daily precipitation	51.3 mm (2.0 in)	51 of 100 (Notable)
Mission 4 W	United States	Record daily precipitation	133.1 mm (5.2 in)	51 of 100 (Notable)
Davenport L&D 15	United States	Record daily precipitation	47.0 mm (1.9 in)	51 of 100 (Notable)
Alton	United States	Record daily precipitation	62.5 mm (2.5 in)	50 of 100 (Notable)
Mistassini Post	Canada	Record daily precipitation	42.7 mm (1.7 in)	49 of 100 (Notable)
Bhongir	India	Record daily precipitation	86.2 mm (3.4 in)	49 of 100 (Notable)
Fife Lake 4 SW	United States	Record daily precipitation	47.8 mm (1.9 in)	49 of 100 (Notable)
Meadowlands 9 S	United States	Record daily snowfall	15.2 cm (6.0 in)	49 of 100 (Notable)
Bloomfield	United States	Record daily precipitation	34.5 mm (1.4 in)	49 of 100 (Notable)
Weslaco	United States	Record daily precipitation	92.7 mm (3.6 in)	49 of 100 (Notable)
Willow Rsvr	United States	Record daily precipitation	70.4 mm (2.8 in)	49 of 100 (Notable)
Watersmeet	United States	Record daily precipitation	47.0 mm (1.9 in)	48 of 100 (Notable)
Winter	United States	Record daily precipitation	55.9 mm (2.2 in)	48 of 100 (Notable)
Sharon Springs	United States	Record daily snowfall	10.2 cm (4.0 in)	47 of 100 (Notable)
Hart 3 WSW	United States	Record daily precipitation	50.3 mm (2.0 in)	47 of 100 (Notable)
Fairmont	United States	Record daily precipitation	44.7 mm (1.8 in)	47 of 100 (Notable)
Maple Plain	United States	Record daily snowfall	5.1 cm (2.0 in)	47 of 100 (Notable)
Big St Germain Dam	United States	Record daily precipitation	65.3 mm (2.6 in)	47 of 100 (Notable)
Blair	United States	Record daily precipitation	87.4 mm (3.4 in)	47 of 100 (Notable)
Hatfield	United States	Record daily precipitation	52.8 mm (2.1 in)	47 of 100 (Notable)
Holcombe	United States	Record daily precipitation	71.9 mm (2.8 in)	47 of 100 (Notable)
Sparta	United States	Record daily precipitation	46.2 mm (1.8 in)	47 of 100 (Notable)

Counts by Type and Timescale

1,265 records

Records set or tied on 15 October 1966 by type: Highest daily maximum 11, Lowest daily maximum 130, Highest daily minimum 106, Lowest daily minimum 410, Heaviest daily rainfall 529, Heaviest daily snowfall 60, Deepest snow cover 19.

Records on 15 October 1966 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	130
Highest daily minimum	106
Lowest daily minimum	410
Heaviest daily rainfall	529
Heaviest daily snowfall	60
Deepest snow cover	19

Records on 15 October 1966 by timescale: all-time 1, monthly 31, daily 1,233.

How Much Records Were Beaten By

1,083 broken records

Margins by which the 1,083 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 220.0. Ties are not counted.

Top 20 by Significance

15 October 1966

Top 20 records on 15 October 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 October 1966	Cresco 1 NE, US	monthly rain	113.0 mm (4.4 in)	34.8 mm (1.4 in)	73 years	71 of 100 (Major)
15 October 1966	Minocqua, US	monthly rain	86.4 mm (3.4 in)	33.1 mm (1.3 in)	55 years	71 of 100 (Major)
15 October 1966	New Ulm 2 SE, US	daily rain	70.9 mm (2.8 in)	46.3 mm (1.8 in)	68 years	67 of 100 (Major)
15 October 1966	Ramnagaram, IN	daily rain	113.8 mm (4.5 in)	69.9 mm (2.8 in)	64 years	65 of 100 (Major)
15 October 1966	Chatham Exp Fa, US	daily rain	57.2 mm (2.3 in)	44.5 mm (1.8 in)	60 years	64 of 100 (Major)
15 October 1966	Stillwater 1 SE, US	daily rain	64.3 mm (2.5 in)	41.9 mm (1.6 in)	60 years	64 of 100 (Major)
15 October 1966	Merrill, US	daily rain	55.1 mm (2.2 in)	37.1 mm (1.5 in)	60 years	64 of 100 (Major)
15 October 1966	Tomahawk Spirit Rsvr, US	daily rain	68.8 mm (2.7 in)	45.9 mm (1.8 in)	60 years	64 of 100 (Major)
15 October 1966	Shawano 2SSW, US	daily rain	50.0 mm (2.0 in)	38.3 mm (1.5 in)	65 years	62 of 100 (Major)
15 October 1966	Brownsville, US	daily rain	143.0 mm (5.6 in)	94.2 mm (3.7 in)	53 years	62 of 100 (Major)
15 October 1966	Stratton, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	60 years	59 of 100 (Notable)
15 October 1966	Tracy, US	daily rain	65.5 mm (2.6 in)	50.0 mm (2.0 in)	45 years	58 of 100 (Notable)
15 October 1966	Caledonia, US	daily rain	55.9 mm (2.2 in)	36.1 mm (1.4 in)	63 years	57 of 100 (Notable)
15 October 1966	Grand Meadow, US	monthly rain	66.0 mm (2.6 in)	18.5 mm (0.7 in)	71 years	57 of 100 (Notable)
15 October 1966	Rhinelander, US	daily rain	51.6 mm (2.0 in)	43.5 mm (1.7 in)	33 years	57 of 100 (Notable)
15 October 1966	Whitefish Pt, US	daily rain	50.0 mm (2.0 in)	34.8 mm (1.4 in)	37 years	56 of 100 (Notable)
15 October 1966	Hastings Dam 2, US	daily rain	56.4 mm (2.2 in)	49.3 mm (1.9 in)	32 years	56 of 100 (Notable)
15 October 1966	Maple Plain, US	daily rain	61.7 mm (2.4 in)	35.0 mm (1.4 in)	45 years	56 of 100 (Notable)
15 October 1966	Wellston Tippy Dam, US	daily rain	49.3 mm (1.9 in)	37.1 mm (1.5 in)	35 years	55 of 100 (Notable)
15 October 1966	Flambeau Rsvr, US	daily rain	50.5 mm (2.0 in)	39.8 mm (1.6 in)	37 years	55 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

1794 to 1966

Records set or tied on this calendar date in each year from 1794 to 1966. 1966 had 1,265 records.

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

Records on 10-15 in each year
Year	Records
1794	1
1795	1
1796	1
1807	1
1808	2
1836	1
1838	1
1839	1
1849	1
1859	2
1862	1
1870	2
1871	4
1873	1
1875	1
1876	3
1877	1
1878	3
1879	3
1881	3
1882	4
1885	2
1886	1
1887	8
1889	2
1891	4
1892	1
1893	5
1894	9
1895	3
1896	8
1897	2
1898	3
1899	4
1900	3
1901	4
1902	7
1903	13
1904	10
1905	13
1906	7
1907	11
1908	13
1909	17
1910	14
1911	18
1912	17
1913	70
1914	28
1915	48
1916	21
1917	29
1918	21
1919	65
1920	38
1921	160
1922	43
1923	66
1924	118
1925	221
1926	125
1927	94
1928	385
1929	200
1930	282
1931	461
1932	213
1933	255
1934	434
1935	303
1936	126
1937	1,444
1938	598
1939	461
1940	458
1941	330
1942	494
1943	704
1944	246
1945	487
1946	354
1947	963
1948	224
1949	546
1950	321
1951	341
1952	662
1953	374
1954	945
1955	444
1956	555
1957	461
1958	606
1959	411
1960	600
1961	834
1962	1,009
1963	522
1964	488
1965	299
1966	1,265
1967	464
1968	1,111
1969	1,074
1970	642
1971	744
1972	584
1973	525
1974	768
1975	808
1976	791
1977	543
1978	886
1979	720
1980	1,006
1981	965
1982	297
1983	653
1984	1,236
1985	1,068
1986	768
1987	900
1988	896
1989	560
1990	1,134
1991	1,139
1992	1,530
1993	1,066
1994	1,103
1995	1,008
1996	458
1997	964
1998	806
1999	766
2000	625
2001	705
2002	965
2003	737
2004	716
2005	610
2006	1,305
2007	702
2008	959
2009	2,365
2010	1,095
2011	906
2012	909
2013	632
2014	901
2015	1,139
2016	674
2017	1,091
2018	2,682
2019	479
2020	499
2021	983
2022	633
2023	319
2024	748
2025	697

Download the Data

Data for records on 1966-10-15: 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 50	1,026
50 to 100	38
100 to 150	14
150 to 200	4
200 to 250	1