Weather Records on 18 April 1965

363 weather records were set or tied worldwide on 18 April 1965. Highest significance: Ai-Petri, UA.

Key Facts for 18 April 1965

On 18 April 1965, 363 weather records were set or tied at long-record stations worldwide.
52 were record highs and 70 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 357 daily.
Ai-Petri set a daily record precipitation of 55.3 mm (2.2 in) on 18 April 1965.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 468 records.

Record Map

363 stations

363 station records on 18 April 1965 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1965: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ai-Petri	Ukraine	Record daily precipitation	55.3 mm (2.2 in)	61 of 100 (Major)
Binghamton Wb City	United States	Record snow depth	12.7 cm (5.0 in)	55 of 100 (Notable)
Binghamton Wb City	United States	Record daily snowfall	15.0 cm (5.9 in)	49 of 100 (Notable)
Johanna Glen	Australia	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
Angelica	United States	Record snow depth	10.2 cm (4.0 in)	46 of 100 (Notable)
Villa Ahumada	Mexico	Record daily precipitation	31.8 mm (1.3 in)	44 of 100 (Notable)
Angelica	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Oswego	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Skaneateles	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Grafton	United States	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Roxbury	United States	Record daily snowfall	20.3 cm (8.0 in)	39 of 100 (Notable)
Blackbutte 1 N	United States	Record daily precipitation	34.3 mm (1.4 in)	38 of 100 (Notable)
Valdez WSO	United States	Record high maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Tirupoondi	India	Record daily precipitation	74.0 mm (2.9 in)	37 of 100 (Notable)
Jaicos	Brazil	Record daily precipitation	63.0 mm (2.5 in)	36 of 100 (Notable)
Moosehorn	Canada	Record daily snowfall	12.7 cm (5.0 in)	36 of 100 (Notable)
Durham	Canada	Record low minimum temperature	-8.9 C (16.0 F)	35 of 100 (Notable)
Hanover	United States	Record daily snowfall	11.4 cm (4.5 in)	35 of 100 (Notable)
Oran-Hopital Militaire	Algeria	Record high maximum temperature	25.0 C (77.0 F)	34 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
Guelph Oac	Canada	Record low minimum temperature	-9.4 C (15.1 F)	34 of 100 (Routine)
Happy Camp Rs	United States	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Clear Lake	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Cavendish	United States	Record daily snowfall	6.4 cm (2.5 in)	34 of 100 (Routine)
Stockbridge	United States	Record daily snowfall	10.2 cm (4.0 in)	33 of 100 (Routine)
Gloversville	United States	Record daily snowfall	7.6 cm (3.0 in)	32 of 100 (Routine)
Leola	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Nokomis	Canada	Record daily snowfall	5.1 cm (2.0 in)	31 of 100 (Routine)
Grimsby	Canada	Record low minimum temperature	-6.1 C (21.0 F)	31 of 100 (Routine)
Port Dover	Canada	Record low minimum temperature	-6.7 C (19.9 F)	31 of 100 (Routine)
Geelkop	South Africa	Record daily precipitation	29.0 mm (1.1 in)	31 of 100 (Routine)
Steamboat Springs	United States	Record daily snowfall	17.0 cm (6.7 in)	31 of 100 (Routine)
Sherburne	United States	Record daily snowfall	5.1 cm (2.0 in)	31 of 100 (Routine)
Brookings	United States	Record daily precipitation	77.5 mm (3.1 in)	31 of 100 (Routine)
Drain	United States	Record daily precipitation	35.6 mm (1.4 in)	31 of 100 (Routine)
Seward AP	United States	Record high maximum temperature	17.8 C (64.0 F)	30 of 100 (Routine)
Piacabucu	Brazil	Record daily precipitation	75.0 mm (3.0 in)	29 of 100 (Routine)
Bloomfield 3 SE	United States	Record high minimum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Rutland	United States	Record daily snowfall	6.4 cm (2.5 in)	29 of 100 (Routine)
Toronto Agincourt	Canada	Record low minimum temperature	-9.4 C (15.1 F)	27 of 100 (Routine)
Lindsay	Canada	Record low minimum temperature	-11.1 C (12.0 F)	27 of 100 (Routine)
Homer AP	United States	Record high maximum temperature	16.1 C (61.0 F)	27 of 100 (Routine)
St Catharines	Canada	Record low minimum temperature	-7.2 C (19.0 F)	26 of 100 (Routine)
Lillhamra	Sweden	Record daily precipitation	27.2 mm (1.1 in)	26 of 100 (Routine)
Cordova AP	United States	Record high maximum temperature	14.4 C (57.9 F)	26 of 100 (Routine)
Polis	Cyprus	Record daily precipitation	29.0 mm (1.1 in)	24 of 100 (Routine)
Redding Fire STN 2	United States	Record daily precipitation	39.4 mm (1.6 in)	24 of 100 (Routine)
Lockport 2SE	United States	Record low minimum temperature	-7.8 C (18.0 F)	24 of 100 (Routine)
Seward AP	United States	Record high minimum temperature	6.1 C (43.0 F)	24 of 100 (Routine)
Santa Cruz (Cruz de Malta)	Brazil	Record daily precipitation	35.3 mm (1.4 in)	23 of 100 (Routine)
Currais Novos	Brazil	Record daily precipitation	33.3 mm (1.3 in)	23 of 100 (Routine)
Palmeiro Dos Indios	Brazil	Record daily precipitation	68.5 mm (2.7 in)	23 of 100 (Routine)
Listowel	Canada	Record low minimum temperature	-8.9 C (16.0 F)	23 of 100 (Routine)
Georgetown	Canada	Record low minimum temperature	-10.0 C (14.0 F)	23 of 100 (Routine)
Garden Valley	United States	Record low maximum temperature	3.9 C (39.0 F)	23 of 100 (Routine)
Watertown	United States	Record daily snowfall	5.8 cm (2.3 in)	23 of 100 (Routine)
Gumri	Armenia	Record daily precipitation	29.5 mm (1.2 in)	22 of 100 (Routine)
Brisbane Regional Office	Australia	Record high maximum temperature	30.6 C (87.1 F)	22 of 100 (Routine)
Acude Varzea da Volta	Brazil	Record daily precipitation	70.0 mm (2.8 in)	22 of 100 (Routine)
Farias Brito	Brazil	Record daily precipitation	68.2 mm (2.7 in)	22 of 100 (Routine)

Counts by Type and Timescale

363 records

Records set or tied on 18 April 1965 by type: Highest daily maximum 21, Lowest daily maximum 33, Highest daily minimum 31, Lowest daily minimum 37, Heaviest daily rainfall 159, Heaviest daily snowfall 66, Deepest snow cover 16.

Records on 18 April 1965 by type
Record type	Records
Highest daily maximum	21
Lowest daily maximum	33
Highest daily minimum	31
Lowest daily minimum	37
Heaviest daily rainfall	159
Heaviest daily snowfall	66
Deepest snow cover	16

Records on 18 April 1965 by timescale: all-time 0, monthly 6, daily 357.

How Much Records Were Beaten By

308 broken records

Margins by which the 308 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 145.0. Ties are not counted.

Top 20 by Significance

18 April 1965

Top 20 records on 18 April 1965 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1965	Ai-Petri, UA	daily rain	55.3 mm (2.2 in)	35.3 mm (1.4 in)	47 years	61 of 100 (Major)
18 April 1965	Binghamton Wb City, US	daily snow depth	12.7 cm (5.0 in)	12.7 cm (5.0 in)	39 years	55 of 100 (Notable)
18 April 1965	Binghamton Wb City, US	daily snowfall	15.0 cm (5.9 in)	14.5 cm (5.7 in)	12 years	49 of 100 (Notable)
18 April 1965	Johanna Glen, AU	daily rain	36.3 mm (1.4 in)	15.7 mm (0.6 in)	66 years	47 of 100 (Notable)
18 April 1965	Angelica, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	58 years	46 of 100 (Notable)
18 April 1965	Villa Ahumada, MX	daily rain	31.8 mm (1.3 in)	31.8 mm (1.3 in)	60 years	44 of 100 (Notable)
18 April 1965	Angelica, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	71 years	42 of 100 (Notable)
18 April 1965	Oswego, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	39 years	42 of 100 (Notable)
18 April 1965	Skaneateles, US	daily snowfall	10.2 cm (4.0 in)	9.4 cm (3.7 in)	42 years	42 of 100 (Notable)
18 April 1965	Grafton, US	daily snowfall	10.2 cm (4.0 in)	5.1 cm (2.0 in)	77 years	39 of 100 (Notable)
18 April 1965	Roxbury, US	daily snowfall	20.3 cm (8.0 in)	12.7 cm (5.0 in)	44 years	39 of 100 (Notable)
18 April 1965	Blackbutte 1 N, US	daily rain	34.3 mm (1.4 in)	11.4 mm (0.4 in)	52 years	38 of 100 (Notable)
18 April 1965	Valdez WSO, US	daily high max	20.0 C (68.0 F)	8.9 C (16.0 F)	28 years	38 of 100 (Notable)
18 April 1965	Tirupoondi, IN	daily rain	74.0 mm (2.9 in)	53.2 mm (2.1 in)	28 years	37 of 100 (Notable)
18 April 1965	Jaicos, BR	daily rain	63.0 mm (2.5 in)	26.8 mm (1.1 in)	40 years	36 of 100 (Notable)
18 April 1965	Moosehorn, CA	daily snowfall	12.7 cm (5.0 in)	9.9 cm (3.9 in)	24 years	36 of 100 (Notable)
18 April 1965	Durham, CA	daily low min	-8.9 C (16.0 F)	3.3 C (5.9 F)	72 years	35 of 100 (Notable)
18 April 1965	Hanover, US	daily snowfall	11.4 cm (4.5 in)	11.1 cm (4.4 in)	42 years	35 of 100 (Notable)
18 April 1965	Oran-Hopital Militaire, DZ	daily high max	25.0 C (77.0 F)	1.0 C (1.8 F)	71 years	34 of 100 (Routine)
18 April 1965	Cape Otway Lighthouse, AU	daily rain	29.5 mm (1.2 in)	10.4 mm (0.4 in)	32 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

1793 to 1965

Records set or tied on this calendar date in each year from 1793 to 1965. 1965 had 363 records.

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

Records on 04-18 in each year
Year	Records
1793	1
1807	2
1815	1
1838	1
1847	1
1849	1
1851	1
1852	3
1854	3
1855	1
1865	4
1867	1
1870	1
1871	1
1875	4
1877	2
1878	1
1879	3
1880	2
1884	2
1886	2
1887	3
1888	1
1889	1
1890	2
1891	1
1892	3
1893	5
1894	7
1895	2
1896	3
1897	5
1898	8
1899	2
1900	2
1901	6
1902	5
1903	11
1904	9
1905	12
1906	18
1907	17
1908	37
1909	19
1910	19
1911	25
1912	21
1913	26
1914	38
1915	31
1916	22
1917	40
1918	76
1919	16
1920	64
1921	58
1922	85
1923	107
1924	101
1925	154
1926	322
1927	391
1928	323
1929	126
1930	113
1931	173
1932	326
1933	211
1934	391
1935	264
1936	483
1937	477
1938	711
1939	525
1940	322
1941	496
1942	287
1943	298
1944	259
1945	371
1946	357
1947	444
1948	932
1949	345
1950	244
1951	658
1952	536
1953	1,322
1954	442
1955	817
1956	467
1957	629
1958	370
1959	468
1960	320
1961	520
1962	484
1963	662
1964	449
1965	363
1966	776
1967	882
1968	867
1969	795
1970	771
1971	1,106
1972	470
1973	953
1974	326
1975	751
1976	1,309
1977	717
1978	803
1979	841
1980	842
1981	708
1982	616
1983	2,082
1984	625
1985	1,119
1986	622
1987	1,068
1988	936
1989	625
1990	1,368
1991	780
1992	702
1993	730
1994	1,218
1995	1,601
1996	826
1997	1,256
1998	1,011
1999	1,428
2000	912
2001	1,487
2002	2,084
2003	969
2004	846
2005	622
2006	1,262
2007	675
2008	913
2009	624
2010	478
2011	1,122
2012	744
2013	2,509
2014	534
2015	519
2016	973
2017	588
2018	1,202
2019	601
2020	770
2021	592
2022	1,013
2023	739
2024	641
2025	997
2026	498

Download the Data

Data for records on 1965-04-18: 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	255
20 to 40	23
40 to 60	12
60 to 80	6
80 to 100	4
100 to 120	5
120 to 140	2
140 to 160	1