Weather Records on 30 April 1964

339 weather records were set or tied worldwide on 30 April 1964. Highest significance: Lien I Selbu, NO.

Key Facts for 30 April 1964

On 30 April 1964, 339 weather records were set or tied at long-record stations worldwide.
48 were record highs and 162 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 333 daily.
Lien I Selbu set a monthly record daily precipitation of 40.4 mm (1.6 in) on 30 April 1964.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 447 records.

Record Map

339 stations

339 station records on 30 April 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lien I Selbu	Norway	Record daily precipitation	40.4 mm (1.6 in)	54 of 100 (Notable)
Binghamton Wb City	United States	Record daily precipitation	38.1 mm (1.5 in)	52 of 100 (Notable)
Coleman 3 WNW	United States	Record daily precipitation	51.6 mm (2.0 in)	50 of 100 (Notable)
Sao Luiz Do Curu	Brazil	Record daily precipitation	100.3 mm (3.9 in)	46 of 100 (Notable)
Easton	United States	Record daily precipitation	57.7 mm (2.3 in)	46 of 100 (Notable)
Auburn	United States	Record daily precipitation	27.9 mm (1.1 in)	46 of 100 (Notable)
Rock Hall	United States	Record daily precipitation	42.2 mm (1.7 in)	42 of 100 (Notable)
Mokpo	Korea, South	Record daily precipitation	85.0 mm (3.3 in)	37 of 100 (Notable)
Chestertown	United States	Record daily precipitation	32.5 mm (1.3 in)	32 of 100 (Routine)
T.Narsipur	India	Record daily precipitation	52.1 mm (2.1 in)	30 of 100 (Routine)
Derry 4 SW	United States	Record daily precipitation	32.8 mm (1.3 in)	30 of 100 (Routine)
Mombaca	Brazil	Record daily precipitation	45.0 mm (1.8 in)	29 of 100 (Routine)
Estevan Point	Canada	Record low maximum temperature	5.6 C (42.1 F)	29 of 100 (Routine)
Grafton	United States	Record low minimum temperature	-4.4 C (24.1 F)	29 of 100 (Routine)
Kearneysville	United States	Record daily precipitation	33.5 mm (1.3 in)	29 of 100 (Routine)
Forest Grove	United States	Record low maximum temperature	10.0 C (50.0 F)	28 of 100 (Routine)
Ephrata	United States	Record daily precipitation	38.1 mm (1.5 in)	28 of 100 (Routine)
Newport	United States	Record low maximum temperature	8.9 C (48.0 F)	28 of 100 (Routine)
Mc Minnville	United States	Record low minimum temperature	-2.8 C (27.0 F)	27 of 100 (Routine)
Fredericksburg Np	United States	Record daily precipitation	26.7 mm (1.1 in)	27 of 100 (Routine)
Centralia	United States	Record low minimum temperature	-1.7 C (28.9 F)	27 of 100 (Routine)
Vancouver 4 NNE	United States	Record low maximum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Toledo Lorenzana	Spain	Record high minimum temperature	16.3 C (61.3 F)	26 of 100 (Routine)
Lancaster 2 NE Pump St	United States	Record low maximum temperature	8.3 C (46.9 F)	25 of 100 (Routine)
Newport River	United States	Record daily precipitation	34.8 mm (1.4 in)	25 of 100 (Routine)
Emporia 1 WNW	United States	Record daily precipitation	30.7 mm (1.2 in)	25 of 100 (Routine)
Snoqualmie Pass	United States	Record low minimum temperature	-8.9 C (16.0 F)	25 of 100 (Routine)
Kula Sanatorium 267	United States	Record high minimum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Dover	United States	Record low maximum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Ft Lauderdale	United States	Record daily precipitation	77.5 mm (3.1 in)	24 of 100 (Routine)
Drain	United States	Record low maximum temperature	8.9 C (48.0 F)	24 of 100 (Routine)
Altoona Horseshoe Curv	United States	Record low maximum temperature	6.1 C (43.0 F)	24 of 100 (Routine)
Dickson	United States	Record low minimum temperature	-0.6 C (30.9 F)	24 of 100 (Routine)
Hopewell	United States	Record daily precipitation	53.8 mm (2.1 in)	24 of 100 (Routine)
Riverton	United States	Record daily precipitation	25.1 mm (1.0 in)	24 of 100 (Routine)
Boulia Airport	Australia	Record high maximum temperature	36.2 C (97.2 F)	23 of 100 (Routine)
Ostas I Hegra	Norway	Record daily precipitation	41.1 mm (1.6 in)	23 of 100 (Routine)
Grants Pass	United States	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Winchester 7 SE	United States	Record low maximum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Romney 1 SW	United States	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Koloa 936	United States	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Hagerstown 1E	United States	Record daily precipitation	26.9 mm (1.1 in)	22 of 100 (Routine)
College Park	United States	Record low maximum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Cumberland	United States	Record low maximum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Bethlehem Lehigh UNIV	United States	Record low maximum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Coatesville 1 SW	United States	Record low maximum temperature	7.2 C (45.0 F)	22 of 100 (Routine)
Santo Antonio	Brazil	Record daily precipitation	26.1 mm (1.0 in)	21 of 100 (Routine)
George School	United States	Record low maximum temperature	7.2 C (45.0 F)	21 of 100 (Routine)
Sunbury	United States	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
York 3 SSW Pump STN	United States	Record low maximum temperature	8.9 C (48.0 F)	21 of 100 (Routine)
York 3 SSW Pump STN	United States	Record daily precipitation	28.4 mm (1.1 in)	21 of 100 (Routine)
Lynnville 4 SSW	United States	Record low minimum temperature	0.6 C (33.1 F)	21 of 100 (Routine)
Trondheim - Voll	Norway	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Coulta	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Port Lincoln	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Aunet	Norway	Record daily precipitation	16.4 mm (0.6 in)	20 of 100 (Routine)
Cummins	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Stokes	Australia	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Tumby Bay	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Saittarova_D	Sweden	Record daily precipitation	10.0 mm (0.4 in)	20 of 100 (Routine)

Counts by Type and Timescale

339 records

Records set or tied on 30 April 1964 by type: Highest daily maximum 15, Lowest daily maximum 122, Highest daily minimum 33, Lowest daily minimum 40, Heaviest daily rainfall 126, Heaviest daily snowfall 3.

Records on 30 April 1964 by type
Record type	Records
Highest daily maximum	15
Lowest daily maximum	122
Highest daily minimum	33
Lowest daily minimum	40
Heaviest daily rainfall	126
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 30 April 1964 by timescale: all-time 0, monthly 6, daily 333.

How Much Records Were Beaten By

266 broken records

Margins by which the 266 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 52.3. Ties are not counted.

Top 20 by Significance

30 April 1964

Top 20 records on 30 April 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 1964	Lien I Selbu, NO	monthly rain	40.4 mm (1.6 in)	12.9 mm (0.5 in)	4 years	54 of 100 (Notable)
30 April 1964	Binghamton Wb City, US	daily rain	38.1 mm (1.5 in)	27.4 mm (1.1 in)	21 years	52 of 100 (Notable)
30 April 1964	Coleman 3 WNW, US	daily rain	51.6 mm (2.0 in)	31.3 mm (1.2 in)	56 years	50 of 100 (Notable)
30 April 1964	Sao Luiz Do Curu, BR	daily rain	100.3 mm (3.9 in)	52.3 mm (2.1 in)	43 years	46 of 100 (Notable)
30 April 1964	Easton, US	daily rain	57.7 mm (2.3 in)	23.9 mm (0.9 in)	56 years	46 of 100 (Notable)
30 April 1964	Auburn, US	daily rain	27.9 mm (1.1 in)	14.2 mm (0.6 in)	56 years	46 of 100 (Notable)
30 April 1964	Rock Hall, US	daily rain	42.2 mm (1.7 in)	29.5 mm (1.2 in)	29 years	42 of 100 (Notable)
30 April 1964	Mokpo, KR	daily rain	85.0 mm (3.3 in)	34.0 mm (1.3 in)	36 years	37 of 100 (Notable)
30 April 1964	Chestertown, US	daily rain	32.5 mm (1.3 in)	10.4 mm (0.4 in)	56 years	32 of 100 (Routine)
30 April 1964	T.Narsipur, IN	daily rain	52.1 mm (2.1 in)	19.1 mm (0.8 in)	35 years	30 of 100 (Routine)
30 April 1964	Derry 4 SW, US	daily rain	32.8 mm (1.3 in)	6.6 mm (0.26 in)	56 years	30 of 100 (Routine)
30 April 1964	Mombaca, BR	daily rain	45.0 mm (1.8 in)	15.2 mm (0.6 in)	53 years	29 of 100 (Routine)
30 April 1964	Estevan Point, CA	daily low max	5.6 C (42.1 F)	3.3 C (5.9 F)	31 years	29 of 100 (Routine)
30 April 1964	Grafton, US	daily low min	-4.4 C (24.1 F)	1.1 C (2.0 F)	67 years	29 of 100 (Routine)
30 April 1964	Kearneysville, US	daily rain	33.5 mm (1.3 in)	23.8 mm (0.9 in)	1 year	29 of 100 (Routine)
30 April 1964	Forest Grove, US	daily low max	10.0 C (50.0 F)	1.1 C (2.0 F)	64 years	28 of 100 (Routine)
30 April 1964	Ephrata, US	daily rain	38.1 mm (1.5 in)	17.5 mm (0.7 in)	17 years	28 of 100 (Routine)
30 April 1964	Newport, US	daily low max	8.9 C (48.0 F)	0.5 C (0.9 F)	67 years	28 of 100 (Routine)
30 April 1964	Mc Minnville, US	daily low min	-2.8 C (27.0 F)	1.7 C (3.1 F)	51 years	27 of 100 (Routine)
30 April 1964	Fredericksburg Np, US	daily rain	26.7 mm (1.1 in)	2.6 mm (0.10 in)	62 years	27 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

1795 to 1964

Records set or tied on this calendar date in each year from 1795 to 1964. 1964 had 339 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 1964-04-30: 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 10	237
10 to 20	21
20 to 30	4
30 to 40	3
40 to 50	0
50 to 60	1