Weather Records on 15 May 1966

389 weather records were set or tied worldwide on 15 May 1966. Highest significance: Culbertson, US.

Key Facts for 15 May 1966

On 15 May 1966, 389 weather records were set or tied at long-record stations worldwide.
95 were record highs and 202 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 385 daily.
Culbertson set a daily record precipitation of 29.7 mm (1.2 in) on 15 May 1966.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 431 records.

Record Map

389 stations

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

Weather records on 15 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Culbertson	United States	Record daily precipitation	29.7 mm (1.2 in)	42 of 100 (Notable)
Schreiber	Canada	Record daily precipitation	39.9 mm (1.6 in)	41 of 100 (Notable)
Goat Rock	United States	Record daily precipitation	47.2 mm (1.9 in)	41 of 100 (Notable)
Frazer	United States	Record daily precipitation	32.3 mm (1.3 in)	39 of 100 (Notable)
Mohall	United States	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
Watford City	United States	Record daily precipitation	27.4 mm (1.1 in)	37 of 100 (Notable)
Fairfield	United States	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Velva	United States	Record daily precipitation	27.4 mm (1.1 in)	34 of 100 (Routine)
Akhty	Russia	Record daily precipitation	37.1 mm (1.5 in)	32 of 100 (Routine)
Weldon	United States	Record low maximum temperature	15.0 C (59.0 F)	32 of 100 (Routine)
Bowbells	United States	Record daily precipitation	29.0 mm (1.1 in)	32 of 100 (Routine)
Minot Exp STN	United States	Record daily precipitation	31.5 mm (1.2 in)	32 of 100 (Routine)
Rolla 1NE	United States	Record daily precipitation	26.7 mm (1.1 in)	31 of 100 (Routine)
Suassurana	Brazil	Record daily precipitation	53.2 mm (2.1 in)	30 of 100 (Routine)
Astana	Kazakhstan	Record low minimum temperature	-4.3 C (24.3 F)	30 of 100 (Routine)
Bliss 4 NW	United States	Record low minimum temperature	-3.9 C (25.0 F)	30 of 100 (Routine)
Hansboro 4 NNE	United States	Record daily precipitation	32.5 mm (1.3 in)	30 of 100 (Routine)
Willow City	United States	Record daily precipitation	27.4 mm (1.1 in)	30 of 100 (Routine)
Carthage	United States	Record low maximum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
El-Golea	Algeria	Record low minimum temperature	9.8 C (49.6 F)	29 of 100 (Routine)
Newark Ag Farm	United States	Record low minimum temperature	3.9 C (39.0 F)	29 of 100 (Routine)
Foxholm 7 N	United States	Record daily precipitation	28.4 mm (1.1 in)	29 of 100 (Routine)
Parshall	United States	Record daily precipitation	28.7 mm (1.1 in)	29 of 100 (Routine)
Bella Coola	Canada	Record low maximum temperature	8.9 C (48.0 F)	28 of 100 (Routine)
Zugspitze	Germany	Record high maximum temperature	9.9 C (49.8 F)	28 of 100 (Routine)
Cambridge	United States	Record low minimum temperature	-3.3 C (26.1 F)	28 of 100 (Routine)
Tioga 1E	United States	Record daily precipitation	31.2 mm (1.2 in)	28 of 100 (Routine)
Stehekin 4 NW	United States	Record low maximum temperature	10.0 C (50.0 F)	28 of 100 (Routine)
Vida 6 NE	United States	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Jefferson 3SE	United States	Record high maximum temperature	34.4 C (93.9 F)	27 of 100 (Routine)
Warner Springs	United States	Record low minimum temperature	-0.6 C (30.9 F)	26 of 100 (Routine)
Weiser	United States	Record low minimum temperature	-1.7 C (28.9 F)	26 of 100 (Routine)
Cle Elum	United States	Record low maximum temperature	10.0 C (50.0 F)	26 of 100 (Routine)
Northport	United States	Record low maximum temperature	12.2 C (54.0 F)	26 of 100 (Routine)
Britannia Beach Furry Cr	Canada	Record low maximum temperature	8.3 C (46.9 F)	25 of 100 (Routine)
Atbasar	Kazakhstan	Record low maximum temperature	2.0 C (35.6 F)	25 of 100 (Routine)
Turgaj	Kazakhstan	Record low minimum temperature	-3.0 C (26.6 F)	25 of 100 (Routine)
Creston 2 SW	United States	Record daily precipitation	47.8 mm (1.9 in)	25 of 100 (Routine)
Jackson Exp STN	United States	Record low maximum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Kotzebue AP	United States	Record low minimum temperature	-15.6 C (3.9 F)	25 of 100 (Routine)
Fort McPherson	Canada	Record low maximum temperature	-6.1 C (21.0 F)	24 of 100 (Routine)
Shoshone 1 WNW	United States	Record low minimum temperature	-3.3 C (26.1 F)	24 of 100 (Routine)
Beach	United States	Record daily precipitation	32.8 mm (1.3 in)	24 of 100 (Routine)
Tagus	United States	Record daily precipitation	31.0 mm (1.2 in)	24 of 100 (Routine)
Perry	United States	Record high maximum temperature	33.9 C (93.0 F)	24 of 100 (Routine)
Naselle 2 ENE	United States	Record daily precipitation	32.5 mm (1.3 in)	24 of 100 (Routine)
Fauquier	Canada	Record low maximum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Aralskoe More	Kazakhstan	Record low maximum temperature	13.4 C (56.1 F)	23 of 100 (Routine)
Shelbyville Sewage Plt	United States	Record low minimum temperature	2.2 C (36.0 F)	23 of 100 (Routine)
Catawba	United States	Record daily precipitation	30.0 mm (1.2 in)	23 of 100 (Routine)
Anatone	United States	Record low minimum temperature	-3.3 C (26.1 F)	23 of 100 (Routine)
N Bend SW Oregon Rgnl AP	United States	Record low maximum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Newport	United States	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Kustanai	Kazakhstan	Record low minimum temperature	-4.5 C (23.9 F)	22 of 100 (Routine)
Verkhneuralsk	Russia	Record low minimum temperature	-7.2 C (19.0 F)	22 of 100 (Routine)
Barabinsk	Russia	Record low minimum temperature	-5.6 C (21.9 F)	22 of 100 (Routine)
Ulan-Ude	Russia	Record high maximum temperature	28.5 C (83.3 F)	22 of 100 (Routine)
Glenns Ferry	United States	Record low minimum temperature	-2.2 C (28.0 F)	22 of 100 (Routine)
Grand View 4 NW	United States	Record low minimum temperature	-0.6 C (30.9 F)	22 of 100 (Routine)
Bottineau	United States	Record daily precipitation	30.0 mm (1.2 in)	22 of 100 (Routine)

Counts by Type and Timescale

389 records

Records set or tied on 15 May 1966 by type: Highest daily maximum 57, Lowest daily maximum 112, Highest daily minimum 38, Lowest daily minimum 90, Heaviest daily rainfall 88, Heaviest daily snowfall 4.

Records on 15 May 1966 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	112
Highest daily minimum	38
Lowest daily minimum	90
Heaviest daily rainfall	88
Heaviest daily snowfall	4
Deepest snow cover	0

Records on 15 May 1966 by timescale: all-time 0, monthly 4, daily 385.

How Much Records Were Beaten By

302 broken records

Margins by which the 302 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 32.2. Ties are not counted.

Top 20 by Significance

15 May 1966

Top 20 records on 15 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1966	Culbertson, US	daily rain	29.7 mm (1.2 in)	17.0 mm (0.7 in)	56 years	42 of 100 (Notable)
15 May 1966	Schreiber, CA	daily rain	39.9 mm (1.6 in)	21.9 mm (0.9 in)	25 years	41 of 100 (Notable)
15 May 1966	Goat Rock, US	daily rain	47.2 mm (1.9 in)	31.2 mm (1.2 in)	44 years	41 of 100 (Notable)
15 May 1966	Frazer, US	daily rain	32.3 mm (1.3 in)	27.2 mm (1.1 in)	4 years	39 of 100 (Notable)
15 May 1966	Mohall, US	daily rain	35.6 mm (1.4 in)	24.9 mm (1.0 in)	24 years	38 of 100 (Notable)
15 May 1966	Watford City, US	daily rain	27.4 mm (1.1 in)	19.8 mm (0.8 in)	37 years	37 of 100 (Notable)
15 May 1966	Fairfield, US	daily rain	35.6 mm (1.4 in)	23.2 mm (0.9 in)	21 years	34 of 100 (Routine)
15 May 1966	Velva, US	daily rain	27.4 mm (1.1 in)	17.0 mm (0.7 in)	37 years	34 of 100 (Routine)
15 May 1966	Akhty, RU	monthly rain	37.1 mm (1.5 in)	7.2 mm (0.28 in)	11 years	32 of 100 (Routine)
15 May 1966	Weldon, US	daily low max	15.0 C (59.0 F)	1.1 C (2.0 F)	74 years	32 of 100 (Routine)
15 May 1966	Bowbells, US	daily rain	29.0 mm (1.1 in)	10.5 mm (0.4 in)	51 years	32 of 100 (Routine)
15 May 1966	Minot Exp STN, US	daily rain	31.5 mm (1.2 in)	9.9 mm (0.39 in)	51 years	32 of 100 (Routine)
15 May 1966	Rolla 1NE, US	daily rain	26.7 mm (1.1 in)	15.8 mm (0.6 in)	23 years	31 of 100 (Routine)
15 May 1966	Suassurana, BR	daily rain	53.2 mm (2.1 in)	32.2 mm (1.3 in)	16 years	30 of 100 (Routine)
15 May 1966	Astana, KZ	daily low min	-4.3 C (24.3 F)	0.5 C (0.9 F)	71 years	30 of 100 (Routine)
15 May 1966	Bliss 4 NW, US	daily low min	-3.9 C (25.0 F)	1.7 C (3.1 F)	69 years	30 of 100 (Routine)
15 May 1966	Hansboro 4 NNE, US	daily rain	32.5 mm (1.3 in)	9.6 mm (0.38 in)	51 years	30 of 100 (Routine)
15 May 1966	Willow City, US	daily rain	27.4 mm (1.1 in)	10.9 mm (0.4 in)	37 years	30 of 100 (Routine)
15 May 1966	Carthage, US	daily low max	14.4 C (57.9 F)	2.3 C (4.1 F)	61 years	30 of 100 (Routine)
15 May 1966	El-Golea, DZ	daily low min	9.8 C (49.6 F)	0.4 C (0.7 F)	70 years	29 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

1820 to 1966

Records set or tied on this calendar date in each year from 1820 to 1966. 1966 had 389 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1966-05-15: 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 5	239
5 to 10	30
10 to 15	14
15 to 20	11
20 to 25	4
25 to 30	2
30 to 35	2