Weather Records on 27 April 1964

711 weather records were set or tied worldwide on 27 April 1964. Highest significance: Onida 4 NW, US.

Key Facts for 27 April 1964

On 27 April 1964, 711 weather records were set or tied at long-record stations worldwide.
83 were record highs and 79 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 25 monthly and 685 daily.
Onida 4 NW set a monthly record daily precipitation of 81.3 mm (3.2 in) on 27 April 1964.
Across 158 earlier years (1795 to 2026) the same calendar date averaged 474 records.

Record Map

711 stations

711 station records on 27 April 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 April 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Onida 4 NW	United States	Record daily precipitation	81.3 mm (3.2 in)	68 of 100 (Major)
Wydgee	Australia	Record daily precipitation	32.8 mm (1.3 in)	63 of 100 (Major)
Algona	United States	Record daily precipitation	54.9 mm (2.2 in)	61 of 100 (Major)
Estherville 4E	United States	Record daily precipitation	50.8 mm (2.0 in)	61 of 100 (Major)
Val (Sar)	South Africa	Record daily precipitation	100.7 mm (4.0 in)	58 of 100 (Notable)
Highmore	United States	Record daily precipitation	65.5 mm (2.6 in)	58 of 100 (Notable)
Mandan Exp STN	United States	Record daily precipitation	39.1 mm (1.5 in)	57 of 100 (Notable)
Geneva	United States	Record daily precipitation	144.8 mm (5.7 in)	56 of 100 (Notable)
Pocahontas	United States	Record daily precipitation	49.5 mm (1.9 in)	56 of 100 (Notable)
Yandil	Australia	Record daily precipitation	37.6 mm (1.5 in)	55 of 100 (Notable)
Greenville	United States	Record daily precipitation	212.9 mm (8.4 in)	55 of 100 (Notable)
Youanmi Downs	Australia	Record daily precipitation	81.3 mm (3.2 in)	54 of 100 (Notable)
Pierre Rgnl AP	United States	Record daily precipitation	50.8 mm (2.0 in)	53 of 100 (Notable)
Nangetty	Australia	Record daily precipitation	73.7 mm (2.9 in)	52 of 100 (Notable)
Highland Home	United States	Record daily precipitation	192.3 mm (7.6 in)	52 of 100 (Notable)
Apalachicola AP	United States	Record daily precipitation	139.2 mm (5.5 in)	52 of 100 (Notable)
Tamluk	India	Record daily precipitation	80.2 mm (3.2 in)	51 of 100 (Notable)
Hopewell 1 SE	United States	Record daily precipitation	61.7 mm (2.4 in)	51 of 100 (Notable)
Chandbali	India	Record daily precipitation	89.4 mm (3.5 in)	50 of 100 (Notable)
Kalkfontein	South Africa	Record daily precipitation	59.0 mm (2.3 in)	50 of 100 (Notable)
Humboldt 3 W	United States	Record daily precipitation	41.4 mm (1.6 in)	50 of 100 (Notable)
Iowa Falls	United States	Record daily precipitation	45.2 mm (1.8 in)	50 of 100 (Notable)
Max	United States	Record daily precipitation	31.2 mm (1.2 in)	50 of 100 (Notable)
Dupree	United States	Record daily precipitation	56.6 mm (2.2 in)	50 of 100 (Notable)
River Falls	United States	Record daily precipitation	133.6 mm (5.3 in)	49 of 100 (Notable)
Mason City	United States	Record daily precipitation	34.3 mm (1.4 in)	49 of 100 (Notable)
Bunnawarra	Australia	Record daily precipitation	35.3 mm (1.4 in)	48 of 100 (Notable)
Nalbarra	Australia	Record daily precipitation	48.8 mm (1.9 in)	48 of 100 (Notable)
Amarpara	India	Record daily precipitation	49.5 mm (1.9 in)	48 of 100 (Notable)
Houd Constant	South Africa	Record daily precipitation	58.0 mm (2.3 in)	48 of 100 (Notable)
Caryville	United States	Record daily precipitation	103.6 mm (4.1 in)	48 of 100 (Notable)
Ft Yates 4 SW	United States	Record daily precipitation	49.0 mm (1.9 in)	48 of 100 (Notable)
Brewton 3 SSE	United States	Record daily precipitation	156.7 mm (6.2 in)	47 of 100 (Notable)
Mobile	United States	Record daily precipitation	123.2 mm (4.9 in)	47 of 100 (Notable)
Clayton 1 SSW	United States	Record daily precipitation	64.5 mm (2.5 in)	47 of 100 (Notable)
Yalgoo	Australia	Record daily precipitation	28.7 mm (1.1 in)	46 of 100 (Notable)
Oliphantspoort	South Africa	Record daily precipitation	50.0 mm (2.0 in)	46 of 100 (Notable)
Marshalltown	United States	Record daily precipitation	40.6 mm (1.6 in)	46 of 100 (Notable)
Bogalusa	United States	Record daily precipitation	128.5 mm (5.1 in)	46 of 100 (Notable)
Atkinson 3SW	United States	Record daily precipitation	57.9 mm (2.3 in)	46 of 100 (Notable)
Cordova 2 ENE	United States	Record daily precipitation	66.3 mm (2.6 in)	45 of 100 (Notable)
Linton	United States	Record daily precipitation	48.8 mm (1.9 in)	45 of 100 (Notable)
Yandal	Australia	Record daily precipitation	29.7 mm (1.2 in)	44 of 100 (Notable)
Gingindlovu	South Africa	Record daily precipitation	77.5 mm (3.1 in)	44 of 100 (Notable)
Winfield 2 SW	United States	Record daily precipitation	83.6 mm (3.3 in)	44 of 100 (Notable)
Poplarville Exp STN	United States	Record daily precipitation	76.5 mm (3.0 in)	44 of 100 (Notable)
Yuinmery	Australia	Record daily precipitation	47.2 mm (1.9 in)	43 of 100 (Notable)
Coffee Springs 2 NW	United States	Record daily precipitation	86.9 mm (3.4 in)	43 of 100 (Notable)
Fairhope 2 NE	United States	Record daily precipitation	105.9 mm (4.2 in)	43 of 100 (Notable)
Hampton	United States	Record daily precipitation	38.1 mm (1.5 in)	43 of 100 (Notable)
Monticello	United States	Record daily precipitation	105.9 mm (4.2 in)	43 of 100 (Notable)
Narndee	Australia	Record daily precipitation	38.4 mm (1.5 in)	42 of 100 (Notable)
Decatur	United States	Record daily precipitation	56.6 mm (2.2 in)	42 of 100 (Notable)
Valdosta 2 S	United States	Record daily precipitation	112.3 mm (4.4 in)	42 of 100 (Notable)
Wanarie	Australia	Record daily precipitation	29.7 mm (1.2 in)	41 of 100 (Notable)
Experiment	United States	Record daily precipitation	88.9 mm (3.5 in)	41 of 100 (Notable)
St Joseph 3 N	United States	Record daily precipitation	82.3 mm (3.2 in)	41 of 100 (Notable)
Timber Lake	United States	Record daily precipitation	39.9 mm (1.6 in)	41 of 100 (Notable)
Weebo	Australia	Record daily precipitation	31.0 mm (1.2 in)	40 of 100 (Notable)
Madison	United States	Record daily precipitation	67.6 mm (2.7 in)	40 of 100 (Notable)

Counts by Type and Timescale

711 records

Records set or tied on 27 April 1964 by type: Highest daily maximum 30, Lowest daily maximum 45, Highest daily minimum 53, Lowest daily minimum 34, Heaviest daily rainfall 537, Heaviest daily snowfall 11, Deepest snow cover 1.

Records on 27 April 1964 by type
Record type	Records
Highest daily maximum	30
Lowest daily maximum	45
Highest daily minimum	53
Lowest daily minimum	34
Heaviest daily rainfall	537
Heaviest daily snowfall	11
Deepest snow cover	1

Records on 27 April 1964 by timescale: all-time 1, monthly 25, daily 685.

How Much Records Were Beaten By

644 broken records

Margins by which the 644 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 142.0. Ties are not counted.

Top 20 by Significance

27 April 1964

Top 20 records on 27 April 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 April 1964	Onida 4 NW, US	monthly rain	81.3 mm (3.2 in)	41.9 mm (1.6 in)	45 years	68 of 100 (Major)
27 April 1964	Wydgee, AU	daily rain	32.8 mm (1.3 in)	32.8 mm (1.3 in)	58 years	63 of 100 (Major)
27 April 1964	Algona, US	daily rain	54.9 mm (2.2 in)	37.1 mm (1.5 in)	64 years	61 of 100 (Major)
27 April 1964	Estherville 4E, US	daily rain	50.8 mm (2.0 in)	30.5 mm (1.2 in)	70 years	61 of 100 (Major)
27 April 1964	Val (Sar), ZA	monthly rain	100.7 mm (4.0 in)	30.6 mm (1.2 in)	33 years	58 of 100 (Notable)
27 April 1964	Highmore, US	monthly rain	65.5 mm (2.6 in)	19.8 mm (0.8 in)	52 years	58 of 100 (Notable)
27 April 1964	Mandan Exp STN, US	daily rain	39.1 mm (1.5 in)	28.2 mm (1.1 in)	40 years	57 of 100 (Notable)
27 April 1964	Geneva, US	daily rain	144.8 mm (5.7 in)	142.0 mm (5.6 in)	31 years	56 of 100 (Notable)
27 April 1964	Pocahontas, US	daily rain	49.5 mm (1.9 in)	36.8 mm (1.4 in)	35 years	56 of 100 (Notable)
27 April 1964	Yandil, AU	daily rain	37.6 mm (1.5 in)	37.6 mm (1.5 in)	58 years	55 of 100 (Notable)
27 April 1964	Greenville, US	monthly rain	212.9 mm (8.4 in)	48.6 mm (1.9 in)	54 years	55 of 100 (Notable)
27 April 1964	Youanmi Downs, AU	monthly rain	81.3 mm (3.2 in)	53.4 mm (2.1 in)	3 years	54 of 100 (Notable)
27 April 1964	Pierre Rgnl AP, US	daily rain	50.8 mm (2.0 in)	34.0 mm (1.3 in)	22 years	53 of 100 (Notable)
27 April 1964	Nangetty, AU	daily rain	73.7 mm (2.9 in)	63.0 mm (2.5 in)	23 years	52 of 100 (Notable)
27 April 1964	Highland Home, US	monthly rain	192.3 mm (7.6 in)	57.4 mm (2.3 in)	20 years	52 of 100 (Notable)
27 April 1964	Apalachicola AP, US	daily rain	139.2 mm (5.5 in)	131.3 mm (5.2 in)	31 years	52 of 100 (Notable)
27 April 1964	Tamluk, IN	daily rain	80.2 mm (3.2 in)	59.6 mm (2.3 in)	19 years	51 of 100 (Notable)
27 April 1964	Hopewell 1 SE, US	daily rain	61.7 mm (2.4 in)	46.7 mm (1.8 in)	22 years	51 of 100 (Notable)
27 April 1964	Chandbali, IN	monthly rain	89.4 mm (3.5 in)	37.1 mm (1.5 in)	20 years	50 of 100 (Notable)
27 April 1964	Kalkfontein, ZA	daily rain	59.0 mm (2.3 in)	50.9 mm (2.0 in)	19 years	50 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

1795 to 1964

Records set or tied on this calendar date in each year from 1795 to 1964. 1964 had 711 records.

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

Records on 04-27 in each year
Year	Records
1795	1
1801	1
1802	2
1812	1
1814	1
1817	3
1828	1
1838	1
1841	1
1843	1
1852	1
1853	1
1855	1
1856	1
1857	1
1862	2
1873	2
1874	4
1879	1
1882	2
1884	2
1885	5
1887	1
1888	4
1890	3
1891	1
1892	3
1893	3
1894	7
1895	2
1896	3
1897	4
1899	5
1900	4
1901	3
1903	5
1904	11
1905	16
1906	13
1907	31
1908	27
1909	51
1910	8
1911	37
1912	5
1913	73
1914	19
1915	77
1916	36
1917	47
1918	55
1919	69
1920	44
1921	71
1922	151
1923	110
1924	103
1925	113
1926	287
1927	114
1928	404
1929	71
1930	80
1931	454
1932	331
1933	328
1934	275
1935	227
1936	97
1937	377
1938	467
1939	212
1940	268
1941	361
1942	569
1943	374
1944	214
1945	476
1946	512
1947	373
1948	535
1949	516
1950	617
1951	409
1952	722
1953	651
1954	875
1955	937
1956	685
1957	552
1958	461
1959	470
1960	684
1961	313
1962	741
1963	768
1964	711
1965	568
1966	1,282
1967	733
1968	372
1969	543
1970	1,142
1971	758
1972	645
1973	1,188
1974	926
1975	820
1976	810
1977	801
1978	694
1979	758
1980	706
1981	1,148
1982	685
1983	921
1984	1,754
1985	1,141
1986	1,225
1987	1,482
1988	893
1989	1,320
1990	1,321
1991	1,028
1992	2,163
1993	1,285
1994	1,614
1995	806
1996	1,034
1997	1,588
1998	872
1999	544
2000	1,171
2001	1,138
2002	1,024
2003	840
2004	937
2005	675
2006	705
2007	1,055
2008	1,032
2009	1,299
2010	751
2011	1,291
2012	1,015
2013	568
2014	656
2015	608
2016	755
2017	918
2018	407
2019	626
2020	497
2021	450
2022	567
2023	536
2024	574
2025	659
2026	450

Download the Data

Data for records on 1964-04-27: 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	513
20 to 40	87
40 to 60	30
60 to 80	7
80 to 100	3
100 to 120	1
120 to 140	2
140 to 160	1