Weather Records on 9 May 1966

994 weather records were set or tied worldwide on 9 May 1966. Highest significance: Nikolaevsk-Na-Amure, RU.

Key Facts for 9 May 1966

On 9 May 1966, 994 weather records were set or tied at long-record stations worldwide.
172 were record highs and 565 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 83 monthly and 911 daily.
Nikolaevsk-Na-Amure set a daily record precipitation of 29.6 mm (1.2 in) on 9 May 1966.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 429 records.

Record Map

994 stations

994 station records on 9 May 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nikolaevsk-Na-Amure	Russia	Record daily precipitation	29.6 mm (1.2 in)	62 of 100 (Major)
Catarina	Brazil	Record daily precipitation	115.6 mm (4.6 in)	58 of 100 (Notable)
Boise City 2 E	United States	Record daily precipitation	46.5 mm (1.8 in)	54 of 100 (Notable)
Arneiroz	Brazil	Record daily precipitation	45.3 mm (1.8 in)	53 of 100 (Notable)
Kyelong Obsy	India	Record daily precipitation	43.2 mm (1.7 in)	51 of 100 (Notable)
Middletown	United States	Record daily precipitation	42.9 mm (1.7 in)	51 of 100 (Notable)
Middle Dam	United States	Record daily snowfall	17.8 cm (7.0 in)	50 of 100 (Notable)
Bathurst	Canada	Record daily snowfall	6.4 cm (2.5 in)	48 of 100 (Notable)
Lawrenceville 2 S	United States	Record snow depth	10.2 cm (4.0 in)	45 of 100 (Notable)
Farmington	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)
Little Falls City Rsch	United States	Record daily snowfall	7.6 cm (3.0 in)	41 of 100 (Notable)
Cornwall	United States	Record daily snowfall	7.6 cm (3.0 in)	40 of 100 (Notable)
Neillsville 3ESE	United States	Record low minimum temperature	-6.7 C (19.9 F)	40 of 100 (Notable)
Carire	Brazil	Record daily precipitation	82.2 mm (3.2 in)	38 of 100 (Notable)
Lennoxville	Canada	Record daily snowfall	10.9 cm (4.3 in)	38 of 100 (Notable)
Mykland	Norway	Record snow depth	10.0 cm (3.9 in)	38 of 100 (Notable)
Bethlehem	United States	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Bend	United States	Record high minimum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Pagosa Springs 1SE	United States	Record high minimum temperature	8.9 C (48.0 F)	37 of 100 (Notable)
Dodgeville Wwtp	United States	Record low minimum temperature	-3.9 C (25.0 F)	37 of 100 (Notable)
Portage Wwtp	United States	Record low minimum temperature	-5.0 C (23.0 F)	37 of 100 (Notable)
Toronto	Canada	Record low maximum temperature	6.1 C (43.0 F)	36 of 100 (Notable)
Nogliki	Russia	Record daily precipitation	25.8 mm (1.0 in)	36 of 100 (Notable)
Albert Lea 3SE	United States	Record low minimum temperature	-6.1 C (21.0 F)	36 of 100 (Notable)
Dayton Mcd	United States	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Oshkosh	United States	Record low minimum temperature	-6.7 C (19.9 F)	36 of 100 (Notable)
Welland	Canada	Record low maximum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Montreal McGill	Canada	Record low maximum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Bar Harbor 3 NW	United States	Record low maximum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Franklin	United States	Record daily precipitation	47.8 mm (1.9 in)	35 of 100 (Notable)
Xenia 6 SSE	United States	Record daily precipitation	38.1 mm (1.5 in)	35 of 100 (Notable)
Beloit	United States	Record low minimum temperature	-3.3 C (26.1 F)	35 of 100 (Notable)
Solon Springs	United States	Record low minimum temperature	-10.6 C (12.9 F)	35 of 100 (Notable)
Green Bay	United States	Record low minimum temperature	-6.1 C (21.0 F)	35 of 100 (Notable)
Coutinho	Brazil	Record daily precipitation	25.3 mm (1.0 in)	34 of 100 (Routine)
St Fereol	Canada	Record daily snowfall	7.6 cm (3.0 in)	34 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record daily precipitation	32.2 mm (1.3 in)	34 of 100 (Routine)
Galeton	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Lawrenceville 2 S	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Pine River 3 NE	United States	Record low minimum temperature	-6.1 C (21.0 F)	34 of 100 (Routine)
Brockton	United States	Record low maximum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Huron Rgnl AP	United States	Record low minimum temperature	-4.4 C (24.1 F)	33 of 100 (Routine)
Durham	Canada	Record low maximum temperature	2.8 C (37.0 F)	32 of 100 (Routine)
Kenogami	Canada	Record daily snowfall	15.2 cm (6.0 in)	32 of 100 (Routine)
Mistassini Post	Canada	Record daily snowfall	15.2 cm (6.0 in)	32 of 100 (Routine)
Paca-Ata	Kyrgyzstan	Record daily precipitation	37.0 mm (1.5 in)	32 of 100 (Routine)
Caldwell	United States	Record high minimum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Hailey 3 NNW	United States	Record high minimum temperature	10.0 C (50.0 F)	32 of 100 (Routine)
Sherburne	United States	Record daily snowfall	7.6 cm (3.0 in)	32 of 100 (Routine)
McKenzie Rvr Rs	United States	Record high minimum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Marcelino Vieira (Panatis)	Brazil	Record daily precipitation	73.1 mm (2.9 in)	31 of 100 (Routine)
Sherbrooke	Canada	Record daily snowfall	10.2 cm (4.0 in)	31 of 100 (Routine)
Nepisiguit Falls	Canada	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Wisconsin Rapids	United States	Record low minimum temperature	-5.0 C (23.0 F)	31 of 100 (Routine)
Disraeli	Canada	Record daily snowfall	9.1 cm (3.6 in)	30 of 100 (Routine)
Jaley	India	Record daily precipitation	88.6 mm (3.5 in)	30 of 100 (Routine)
Kiev	Ukraine	Record high maximum temperature	27.9 C (82.2 F)	30 of 100 (Routine)
Avon Park 2 W	United States	Record high minimum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Geneseo	United States	Record low minimum temperature	-1.7 C (28.9 F)	30 of 100 (Routine)
Hinckley	United States	Record low minimum temperature	-7.2 C (19.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

994 records

Records set or tied on 9 May 1966 by type: Highest daily maximum 34, Lowest daily maximum 241, Highest daily minimum 138, Lowest daily minimum 324, Heaviest daily rainfall 159, Heaviest daily snowfall 77, Deepest snow cover 21.

Records on 9 May 1966 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	241
Highest daily minimum	138
Lowest daily minimum	324
Heaviest daily rainfall	159
Heaviest daily snowfall	77
Deepest snow cover	21

Records on 9 May 1966 by timescale: all-time 0, monthly 83, daily 911.

How Much Records Were Beaten By

750 broken records

Margins by which the 750 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

9 May 1966

Top 20 records on 9 May 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1966	Nikolaevsk-Na-Amure, RU	daily rain	29.6 mm (1.2 in)	18.7 mm (0.7 in)	49 years	62 of 100 (Major)
9 May 1966	Catarina, BR	monthly rain	115.6 mm (4.6 in)	60.2 mm (2.4 in)	19 years	58 of 100 (Notable)
9 May 1966	Boise City 2 E, US	daily rain	46.5 mm (1.8 in)	43.2 mm (1.7 in)	45 years	54 of 100 (Notable)
9 May 1966	Arneiroz, BR	daily rain	45.3 mm (1.8 in)	36.0 mm (1.4 in)	48 years	53 of 100 (Notable)
9 May 1966	Kyelong Obsy, IN	daily rain	43.2 mm (1.7 in)	31.5 mm (1.2 in)	32 years	51 of 100 (Notable)
9 May 1966	Middletown, US	daily rain	42.9 mm (1.7 in)	36.3 mm (1.4 in)	41 years	51 of 100 (Notable)
9 May 1966	Middle Dam, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	39 years	50 of 100 (Notable)
9 May 1966	Bathurst, CA	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	92 years	48 of 100 (Notable)
9 May 1966	Lawrenceville 2 S, US	monthly snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	61 years	45 of 100 (Notable)
9 May 1966	Farmington, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	72 years	43 of 100 (Notable)
9 May 1966	Little Falls City Rsch, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	65 years	41 of 100 (Notable)
9 May 1966	Cornwall, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	60 years	40 of 100 (Notable)
9 May 1966	Neillsville 3ESE, US	monthly low min	-6.7 C (19.9 F)	1.1 C (2.0 F)	70 years	40 of 100 (Notable)
9 May 1966	Carire, BR	daily rain	82.2 mm (3.2 in)	40.8 mm (1.6 in)	20 years	38 of 100 (Notable)
9 May 1966	Lennoxville, CA	daily snowfall	10.9 cm (4.3 in)	9.6 cm (3.8 in)	40 years	38 of 100 (Notable)
9 May 1966	Mykland, NO	daily snow depth	10.0 cm (3.9 in)	10.0 cm (3.9 in)	70 years	38 of 100 (Notable)
9 May 1966	Bethlehem, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	70 years	38 of 100 (Notable)
9 May 1966	Bend, US	daily high min	12.2 C (54.0 F)	5.5 C (9.9 F)	64 years	38 of 100 (Notable)
9 May 1966	Pagosa Springs 1SE, US	daily high min	8.9 C (48.0 F)	5.6 C (10.1 F)	53 years	37 of 100 (Notable)
9 May 1966	Dodgeville Wwtp, US	monthly low min	-3.9 C (25.0 F)	0.6 C (1.1 F)	66 years	37 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

1793 to 1966

Records set or tied on this calendar date in each year from 1793 to 1966. 1966 had 994 records.

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

Records on 05-09 in each year
Year	Records
1793	1
1795	1
1806	1
1810	1
1823	1
1834	1
1838	1
1843	1
1845	2
1846	1
1848	1
1850	2
1855	2
1857	1
1858	1
1861	1
1862	1
1864	2
1865	2
1867	2
1872	1
1873	2
1874	1
1875	2
1879	4
1880	3
1882	1
1883	2
1884	3
1885	3
1889	3
1890	3
1891	3
1892	1
1893	1
1895	2
1896	4
1897	3
1898	3
1899	2
1900	2
1901	9
1902	8
1903	9
1904	14
1905	34
1906	41
1907	11
1908	16
1909	34
1910	45
1911	23
1912	23
1913	15
1914	43
1915	27
1916	26
1917	50
1918	49
1919	47
1920	56
1921	102
1922	45
1923	461
1924	262
1925	123
1926	196
1927	343
1928	302
1929	166
1930	526
1931	411
1932	132
1933	482
1934	750
1935	111
1936	622
1937	128
1938	171
1939	345
1940	237
1941	335
1942	180
1943	524
1944	412
1945	538
1946	278
1947	1,145
1948	379
1949	417
1950	660
1951	188
1952	348
1953	507
1954	489
1955	288
1956	722
1957	505
1958	355
1959	252
1960	748
1961	516
1962	435
1963	1,103
1964	503
1965	730
1966	994
1967	681
1968	545
1969	653
1970	372
1971	338
1972	587
1973	386
1974	699
1975	465
1976	714
1977	931
1978	649
1979	1,605
1980	1,030
1981	639
1982	523
1983	872
1984	892
1985	829
1986	1,253
1987	1,481
1988	594
1989	1,347
1990	850
1991	759
1992	1,476
1993	967
1994	573
1995	960
1996	1,260
1997	1,088
1998	1,182
1999	970
2000	1,114
2001	969
2002	1,489
2003	1,802
2004	926
2005	851
2006	738
2007	765
2008	693
2009	816
2010	764
2011	1,104
2012	686
2013	684
2014	754
2015	689
2016	917
2017	539
2018	879
2019	1,043
2020	1,673
2021	501
2022	1,308
2023	474
2024	792
2025	622
2026	309

Download the Data

Data for records on 1966-05-09: 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 25	689
25 to 50	33
50 to 75	13
75 to 100	9
100 to 125	4
125 to 150	1
150 to 175	0
175 to 200	1