Weather Records on 15 April 1964

382 weather records were set or tied worldwide on 15 April 1964. Highest significance: Middleboro, US.

Key Facts for 15 April 1964

On 15 April 1964, 382 weather records were set or tied at long-record stations worldwide.
134 were record highs and 40 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 6 monthly and 375 daily.
Middleboro set a daily record precipitation of 83.3 mm (3.3 in) on 15 April 1964.
Across 159 earlier years (1801 to 2026) the same calendar date averaged 494 records.

Record Map

382 stations

382 station records on 15 April 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 April 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Middleboro	United States	Record daily precipitation	83.3 mm (3.3 in)	65 of 100 (Major)
Annapolis Royal	Canada	Record daily precipitation	38.9 mm (1.5 in)	52 of 100 (Notable)
Cerro Cora	Brazil	Record daily precipitation	162.0 mm (6.4 in)	51 of 100 (Notable)
Newburyport	United States	Record daily precipitation	42.7 mm (1.7 in)	50 of 100 (Notable)
Lake Konomoc	United States	Record daily precipitation	72.4 mm (2.9 in)	49 of 100 (Notable)
Santa Maria da Boa Vista	Brazil	Record daily precipitation	97.3 mm (3.8 in)	48 of 100 (Notable)
Rio Grande City	United States	Record daily precipitation	43.2 mm (1.7 in)	47 of 100 (Notable)
Bridgehampton	United States	Record daily precipitation	49.3 mm (1.9 in)	46 of 100 (Notable)
Monsenhor Tabosa	Brazil	Record daily precipitation	99.1 mm (3.9 in)	45 of 100 (Notable)
Pacatuba (Pacatiba)	Brazil	Record daily precipitation	65.2 mm (2.6 in)	45 of 100 (Notable)
Bull Harbour	Canada	Record daily snowfall	11.4 cm (4.5 in)	45 of 100 (Notable)
Pembroke	United States	Record daily precipitation	74.7 mm (2.9 in)	45 of 100 (Notable)
Aguas Belas	Brazil	Record daily precipitation	54.2 mm (2.1 in)	43 of 100 (Notable)
Esplanada	Brazil	Record daily precipitation	61.8 mm (2.4 in)	43 of 100 (Notable)
Lydenburg	South Africa	Record daily precipitation	35.5 mm (1.4 in)	43 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	50.3 mm (2.0 in)	43 of 100 (Notable)
Kingston	United States	Record daily precipitation	87.9 mm (3.5 in)	42 of 100 (Notable)
Sao Bento Do Una	Brazil	Record daily precipitation	52.6 mm (2.1 in)	41 of 100 (Notable)
Belfast	United States	Record daily precipitation	37.1 mm (1.5 in)	39 of 100 (Notable)
Ellsworth	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Machias	United States	Record daily precipitation	54.1 mm (2.1 in)	39 of 100 (Notable)
Juazeiro (Pcd)	Brazil	Record daily precipitation	72.3 mm (2.8 in)	38 of 100 (Notable)
Vlakplaats	South Africa	Record daily precipitation	54.0 mm (2.1 in)	38 of 100 (Notable)
Weston	United States	Record daily precipitation	42.4 mm (1.7 in)	38 of 100 (Notable)
Spooner Ag Rsch STN	United States	Record daily precipitation	30.7 mm (1.2 in)	38 of 100 (Notable)
Cape May 2 NW	United States	Record daily precipitation	29.0 mm (1.1 in)	37 of 100 (Notable)
Lethbridge Cda	Canada	Record daily snowfall	11.4 cm (4.5 in)	36 of 100 (Notable)
Shikarpur	India	Record daily precipitation	48.3 mm (1.9 in)	36 of 100 (Notable)
Nongoma	South Africa	Record daily precipitation	41.0 mm (1.6 in)	36 of 100 (Notable)
Middleton	United States	Record daily precipitation	46.2 mm (1.8 in)	36 of 100 (Notable)
High Point	Canada	Record daily snowfall	7.6 cm (3.0 in)	35 of 100 (Notable)
Hyannis	United States	Record daily precipitation	33.8 mm (1.3 in)	34 of 100 (Routine)
Milford	United States	Record daily precipitation	42.7 mm (1.7 in)	34 of 100 (Routine)
Sackville	Canada	Record high maximum temperature	12.8 C (55.0 F)	33 of 100 (Routine)
Digby	Canada	Record daily precipitation	43.2 mm (1.7 in)	33 of 100 (Routine)
Eastport	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Tamboril	Brazil	Record daily precipitation	72.0 mm (2.8 in)	32 of 100 (Routine)
Recanto	Brazil	Record daily precipitation	78.4 mm (3.1 in)	32 of 100 (Routine)
Brooks Ahrc	Canada	Record daily snowfall	10.2 cm (4.0 in)	32 of 100 (Routine)
Santa Cruz	United States	Record high maximum temperature	30.0 C (86.0 F)	32 of 100 (Routine)
Franklin	United States	Record daily precipitation	47.0 mm (1.9 in)	32 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Ubajara	Brazil	Record daily precipitation	117.4 mm (4.6 in)	30 of 100 (Routine)
Lyndon	Canada	Record daily snowfall	12.7 cm (5.0 in)	30 of 100 (Routine)
Bloukrans (Bos)	South Africa	Record daily precipitation	37.5 mm (1.5 in)	30 of 100 (Routine)
Pocomoke City	United States	Record daily precipitation	35.1 mm (1.4 in)	30 of 100 (Routine)
Ouro Branco (Manairama)	Brazil	Record daily precipitation	46.0 mm (1.8 in)	29 of 100 (Routine)
Kamloops	Canada	Record low maximum temperature	8.3 C (46.9 F)	29 of 100 (Routine)
Hanna	Canada	Record daily snowfall	6.4 cm (2.5 in)	29 of 100 (Routine)
Port Hastings	Canada	Record high maximum temperature	15.0 C (59.0 F)	29 of 100 (Routine)
Roberval Nord	Canada	Record high minimum temperature	7.8 C (46.0 F)	28 of 100 (Routine)
Dushanbe	Tajikistan	Record daily precipitation	42.3 mm (1.7 in)	28 of 100 (Routine)
Charlotteburg Rsvr	United States	Record daily precipitation	34.3 mm (1.4 in)	28 of 100 (Routine)
Florania	Brazil	Record daily precipitation	65.6 mm (2.6 in)	27 of 100 (Routine)
Fort McPherson	Canada	Record low minimum temperature	-33.3 C (-27.9 F)	27 of 100 (Routine)
Brooks 1	Canada	Record daily snowfall	7.6 cm (3.0 in)	27 of 100 (Routine)
Santa Paula	United States	Record high maximum temperature	33.9 C (93.0 F)	27 of 100 (Routine)
Ipswich	United States	Record daily precipitation	45.2 mm (1.8 in)	27 of 100 (Routine)
Petrolina	Brazil	Record daily precipitation	156.5 mm (6.2 in)	26 of 100 (Routine)
Fort Macleod	Canada	Record daily snowfall	5.3 cm (2.1 in)	26 of 100 (Routine)

Counts by Type and Timescale

382 records

Records set or tied on 15 April 1964 by type: Highest daily maximum 57, Lowest daily maximum 24, Highest daily minimum 77, Lowest daily minimum 16, Heaviest daily rainfall 180, Heaviest daily snowfall 25, Deepest snow cover 3.

Records on 15 April 1964 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	24
Highest daily minimum	77
Lowest daily minimum	16
Heaviest daily rainfall	180
Heaviest daily snowfall	25
Deepest snow cover	3

Records on 15 April 1964 by timescale: all-time 1, monthly 6, daily 375.

How Much Records Were Beaten By

317 broken records

Margins by which the 317 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

15 April 1964

Top 20 records on 15 April 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1964	Middleboro, US	daily rain	83.3 mm (3.3 in)	58.4 mm (2.3 in)	61 years	65 of 100 (Major)
15 April 1964	Annapolis Royal, CA	daily rain	38.9 mm (1.5 in)	26.2 mm (1.0 in)	44 years	52 of 100 (Notable)
15 April 1964	Cerro Cora, BR	daily rain	162.0 mm (6.4 in)	145.5 mm (5.7 in)	29 years	51 of 100 (Notable)
15 April 1964	Newburyport, US	daily rain	42.7 mm (1.7 in)	21.4 mm (0.8 in)	70 years	50 of 100 (Notable)
15 April 1964	Lake Konomoc, US	daily rain	72.4 mm (2.9 in)	47.0 mm (1.9 in)	39 years	49 of 100 (Notable)
15 April 1964	Santa Maria da Boa Vista, BR	daily rain	97.3 mm (3.8 in)	53.3 mm (2.1 in)	43 years	48 of 100 (Notable)
15 April 1964	Rio Grande City, US	daily rain	43.2 mm (1.7 in)	35.6 mm (1.4 in)	49 years	47 of 100 (Notable)
15 April 1964	Bridgehampton, US	daily rain	49.3 mm (1.9 in)	38.4 mm (1.5 in)	20 years	46 of 100 (Notable)
15 April 1964	Monsenhor Tabosa, BR	daily rain	99.1 mm (3.9 in)	58.6 mm (2.3 in)	3 years	45 of 100 (Notable)
15 April 1964	Pacatuba (Pacatiba), BR	daily rain	65.2 mm (2.6 in)	44.5 mm (1.8 in)	40 years	45 of 100 (Notable)
15 April 1964	Bull Harbour, CA	monthly snowfall	11.4 cm (4.5 in)	10.1 cm (4.0 in)	37 years	45 of 100 (Notable)
15 April 1964	Pembroke, US	daily rain	74.7 mm (2.9 in)	50.6 mm (2.0 in)	12 years	45 of 100 (Notable)
15 April 1964	Aguas Belas, BR	daily rain	54.2 mm (2.1 in)	34.6 mm (1.4 in)	17 years	43 of 100 (Notable)
15 April 1964	Esplanada, BR	daily rain	61.8 mm (2.4 in)	25.5 mm (1.0 in)	44 years	43 of 100 (Notable)
15 April 1964	Lydenburg, ZA	daily rain	35.5 mm (1.4 in)	26.6 mm (1.0 in)	35 years	43 of 100 (Notable)
15 April 1964	Blue Hill Coop, US	daily rain	50.3 mm (2.0 in)	20.1 mm (0.8 in)	55 years	43 of 100 (Notable)
15 April 1964	Kingston, US	daily rain	87.9 mm (3.5 in)	24.4 mm (1.0 in)	61 years	42 of 100 (Notable)
15 April 1964	Sao Bento Do Una, BR	daily rain	52.6 mm (2.1 in)	26.9 mm (1.1 in)	41 years	41 of 100 (Notable)
15 April 1964	Belfast, US	daily rain	37.1 mm (1.5 in)	14.2 mm (0.6 in)	68 years	39 of 100 (Notable)
15 April 1964	Ellsworth, US	daily rain	43.2 mm (1.7 in)	29.5 mm (1.2 in)	15 years	39 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

1801 to 1964

Records set or tied on this calendar date in each year from 1801 to 1964. 1964 had 382 records.

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

Records on 04-15 in each year
Year	Records
1801	1
1817	1
1820	1
1844	1
1845	1
1847	1
1849	1
1853	2
1855	2
1858	1
1862	3
1865	3
1866	1
1868	1
1869	2
1873	1
1874	1
1876	1
1880	1
1882	1
1885	3
1886	1
1887	3
1889	2
1890	3
1891	2
1892	8
1893	2
1894	1
1896	2
1897	1
1898	2
1899	4
1900	9
1901	2
1902	4
1903	8
1904	39
1905	11
1906	20
1907	18
1908	15
1909	18
1910	16
1911	20
1912	24
1913	39
1914	17
1915	13
1916	15
1917	35
1918	40
1919	22
1920	50
1921	59
1922	94
1923	178
1924	172
1925	168
1926	453
1927	321
1928	631
1929	91
1930	289
1931	388
1932	150
1933	300
1934	339
1935	515
1936	439
1937	277
1938	596
1939	789
1940	581
1941	628
1942	525
1943	1,037
1944	313
1945	783
1946	245
1947	532
1948	306
1949	419
1950	568
1951	504
1952	357
1953	475
1954	896
1955	484
1956	750
1957	378
1958	458
1959	314
1960	319
1961	877
1962	733
1963	714
1964	382
1965	504
1966	464
1967	599
1968	476
1969	555
1970	841
1971	640
1972	896
1973	667
1974	385
1975	780
1976	1,566
1977	649
1978	426
1979	370
1980	1,066
1981	724
1982	955
1983	1,343
1984	612
1985	788
1986	1,140
1987	579
1988	839
1989	836
1990	837
1991	769
1992	783
1993	1,156
1994	835
1995	805
1996	1,173
1997	1,031
1998	1,752
1999	1,249
2000	1,163
2001	1,043
2002	1,866
2003	1,760
2004	761
2005	583
2006	1,637
2007	1,776
2008	1,157
2009	853
2010	804
2011	1,162
2012	1,007
2013	1,146
2014	1,721
2015	739
2016	602
2017	474
2018	1,913
2019	610
2020	1,068
2021	494
2022	1,145
2023	912
2024	1,096
2025	860
2026	1,118

Download the Data

Data for records on 1964-04-15: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 25	270
25 to 50	30
50 to 75	11
75 to 100	3
100 to 125	1
125 to 150	1
150 to 175	0
175 to 200	1