Weather Records on 30 June 1964

434 weather records were set or tied worldwide on 30 June 1964. Highest significance: Mason City, US.

Key Facts for 30 June 1964

On 30 June 1964, 434 weather records were set or tied at long-record stations worldwide.
174 were record highs and 83 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 26 monthly and 406 daily.
Mason City set an all-time record daily precipitation of 190.5 mm (7.5 in) on 30 June 1964.
Across 160 earlier years (1826 to 2026) the same calendar date averaged 450 records.

Record Map

434 stations

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

Weather records on 30 June 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mason City	United States	Record daily precipitation	190.5 mm (7.5 in)	68 of 100 (Major)
Moth	India	Record daily precipitation	111.8 mm (4.4 in)	62 of 100 (Major)
Cabrobo	Brazil	Record daily precipitation	30.3 mm (1.2 in)	57 of 100 (Notable)
Khamaria	India	Record daily precipitation	284.4 mm (11.2 in)	54 of 100 (Notable)
Tumby Bay (Hillview)	Australia	Record daily precipitation	29.0 mm (1.1 in)	50 of 100 (Notable)
Hatanga	Russia	Record daily precipitation	28.5 mm (1.1 in)	49 of 100 (Notable)
Macon 2 NE	United States	Record daily precipitation	67.3 mm (2.6 in)	49 of 100 (Notable)
Dharamjaigarh	India	Record daily precipitation	142.2 mm (5.6 in)	46 of 100 (Notable)
Chicholi	India	Record daily precipitation	97.2 mm (3.8 in)	45 of 100 (Notable)
Bezenchuk	Russia	Record daily precipitation	25.5 mm (1.0 in)	42 of 100 (Notable)
Arcadia	United States	Record daily precipitation	80.5 mm (3.2 in)	42 of 100 (Notable)
St Joseph 3 N	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Cygnet River	Australia	Record daily precipitation	28.2 mm (1.1 in)	40 of 100 (Notable)
Toronto	Canada	Record high maximum temperature	36.7 C (98.1 F)	40 of 100 (Notable)
Bradenton Exp STN	United States	Record daily precipitation	95.3 mm (3.8 in)	40 of 100 (Notable)
Lucknow	Canada	Record high maximum temperature	36.7 C (98.1 F)	39 of 100 (Notable)
Deori	India	Record daily precipitation	105.0 mm (4.1 in)	39 of 100 (Notable)
Mau	India	Record daily precipitation	114.5 mm (4.5 in)	39 of 100 (Notable)
Brockville	Canada	Record high maximum temperature	35.0 C (95.0 F)	38 of 100 (Notable)
Nowgong	India	Record daily precipitation	127.7 mm (5.0 in)	37 of 100 (Notable)
Cordova AP	United States	Record daily precipitation	52.3 mm (2.1 in)	37 of 100 (Notable)
Tamia	India	Record daily precipitation	121.0 mm (4.8 in)	36 of 100 (Notable)
Port Hastings	Canada	Record low minimum temperature	2.2 C (36.0 F)	35 of 100 (Notable)
Porbandar	India	Record daily precipitation	148.2 mm (5.8 in)	35 of 100 (Notable)
Badiraguato (Smn)	Mexico	Record daily precipitation	60.5 mm (2.4 in)	35 of 100 (Notable)
Cummins	Australia	Record daily precipitation	25.9 mm (1.0 in)	34 of 100 (Routine)
Olekminsk	Russia	Record high minimum temperature	20.4 C (68.7 F)	34 of 100 (Routine)
Jaora	India	Record daily precipitation	122.7 mm (4.8 in)	33 of 100 (Routine)
Sturgeon Bay Exp Farm	United States	Record high minimum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Wynne	United States	Record daily precipitation	40.6 mm (1.6 in)	32 of 100 (Routine)
Scott	United States	Record daily precipitation	60.2 mm (2.4 in)	32 of 100 (Routine)
Taipu	Brazil	Record daily precipitation	51.9 mm (2.0 in)	31 of 100 (Routine)
Towanda 1 S	United States	Record high maximum temperature	35.6 C (96.1 F)	31 of 100 (Routine)
Yakutat AP	United States	Record daily precipitation	68.3 mm (2.7 in)	31 of 100 (Routine)
Cambridge Galt Moe	Canada	Record high maximum temperature	33.9 C (93.0 F)	30 of 100 (Routine)
Cambridge Galt Moe	Canada	Record high minimum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Wai	India	Record daily precipitation	50.0 mm (2.0 in)	30 of 100 (Routine)
Neshaminy Falls	United States	Record high maximum temperature	38.9 C (102.0 F)	30 of 100 (Routine)
Hatteras	United States	Record low minimum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
University of Queensland Gatto	Australia	Record daily precipitation	33.5 mm (1.3 in)	29 of 100 (Routine)
Belleville	Canada	Record high maximum temperature	35.6 C (96.1 F)	29 of 100 (Routine)
Kotaghat	India	Record daily precipitation	77.2 mm (3.0 in)	29 of 100 (Routine)
Soledad de Doblado	Mexico	Record low maximum temperature	25.0 C (77.0 F)	29 of 100 (Routine)
Saint Leo	United States	Record daily precipitation	119.9 mm (4.7 in)	29 of 100 (Routine)
Macon 2 NE	United States	Record high minimum temperature	25.6 C (78.1 F)	29 of 100 (Routine)
Water Valley	United States	Record low maximum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Plattsburgh AFB	United States	Record high maximum temperature	35.6 C (96.1 F)	29 of 100 (Routine)
Myrtle Bank (Lanoma)	Australia	Record daily precipitation	86.4 mm (3.4 in)	28 of 100 (Routine)
Orono	Canada	Record high maximum temperature	35.0 C (95.0 F)	28 of 100 (Routine)
Toronto Agincourt	Canada	Record high minimum temperature	22.2 C (72.0 F)	28 of 100 (Routine)
Sable Island	Canada	Record low minimum temperature	3.3 C (37.9 F)	28 of 100 (Routine)
Jalalpur	India	Record daily precipitation	166.5 mm (6.6 in)	28 of 100 (Routine)
Santa Paula	United States	Record low minimum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Vevay	United States	Record daily precipitation	32.5 mm (1.3 in)	28 of 100 (Routine)
Franklin 3 NW	United States	Record daily precipitation	48.8 mm (1.9 in)	28 of 100 (Routine)
Collingwood	Canada	Record high minimum temperature	24.4 C (75.9 F)	27 of 100 (Routine)
Toronto Agincourt	Canada	Record high maximum temperature	36.1 C (97.0 F)	27 of 100 (Routine)
Sakti	India	Record daily precipitation	107.4 mm (4.2 in)	27 of 100 (Routine)
Mazanovo	Russia	Record daily precipitation	57.4 mm (2.3 in)	27 of 100 (Routine)
Batesville	United States	Record daily precipitation	33.0 mm (1.3 in)	27 of 100 (Routine)

Counts by Type and Timescale

434 records

Records set or tied on 30 June 1964 by type: Highest daily maximum 122, Lowest daily maximum 31, Highest daily minimum 52, Lowest daily minimum 52, Heaviest daily rainfall 176, Heaviest daily snowfall 1.

Records on 30 June 1964 by type
Record type	Records
Highest daily maximum	122
Lowest daily maximum	31
Highest daily minimum	52
Lowest daily minimum	52
Heaviest daily rainfall	176
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 30 June 1964 by timescale: all-time 2, monthly 26, daily 406.

How Much Records Were Beaten By

343 broken records

Margins by which the 343 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.5. Ties are not counted.

Top 20 by Significance

30 June 1964

Top 20 records on 30 June 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 June 1964	Mason City, US	all-time rain	190.5 mm (7.5 in)	32.3 mm (1.3 in)	59 years	68 of 100 (Major)
30 June 1964	Moth, IN	daily rain	111.8 mm (4.4 in)	78.3 mm (3.1 in)	58 years	62 of 100 (Major)
30 June 1964	Cabrobo, BR	daily rain	30.3 mm (1.2 in)	22.9 mm (0.9 in)	43 years	57 of 100 (Notable)
30 June 1964	Khamaria, IN	all-time rain	284.4 mm (11.2 in)	55.6 mm (2.2 in)	0 years	54 of 100 (Notable)
30 June 1964	Tumby Bay (Hillview), AU	daily rain	29.0 mm (1.1 in)	16.3 mm (0.6 in)	44 years	50 of 100 (Notable)
30 June 1964	Hatanga, RU	daily rain	28.5 mm (1.1 in)	19.5 mm (0.8 in)	22 years	49 of 100 (Notable)
30 June 1964	Macon 2 NE, US	daily rain	67.3 mm (2.6 in)	36.8 mm (1.4 in)	52 years	49 of 100 (Notable)
30 June 1964	Dharamjaigarh, IN	daily rain	142.2 mm (5.6 in)	83.5 mm (3.3 in)	13 years	46 of 100 (Notable)
30 June 1964	Chicholi, IN	daily rain	97.2 mm (3.8 in)	42.1 mm (1.7 in)	56 years	45 of 100 (Notable)
30 June 1964	Bezenchuk, RU	daily rain	25.5 mm (1.0 in)	13.5 mm (0.5 in)	44 years	42 of 100 (Notable)
30 June 1964	Arcadia, US	daily rain	80.5 mm (3.2 in)	23.3 mm (0.9 in)	66 years	42 of 100 (Notable)
30 June 1964	St Joseph 3 N, US	daily rain	50.8 mm (2.0 in)	31.5 mm (1.2 in)	51 years	41 of 100 (Notable)
30 June 1964	Cygnet River, AU	daily rain	28.2 mm (1.1 in)	19.8 mm (0.8 in)	11 years	40 of 100 (Notable)
30 June 1964	Toronto, CA	monthly high max	36.7 C (98.1 F)	1.1 C (2.0 F)	63 years	40 of 100 (Notable)
30 June 1964	Bradenton Exp STN, US	daily rain	95.3 mm (3.8 in)	50.8 mm (2.0 in)	47 years	40 of 100 (Notable)
30 June 1964	Lucknow, CA	monthly high max	36.7 C (98.1 F)	1.1 C (2.0 F)	69 years	39 of 100 (Notable)
30 June 1964	Deori, IN	daily rain	105.0 mm (4.1 in)	59.4 mm (2.3 in)	1 year	39 of 100 (Notable)
30 June 1964	Mau, IN	monthly rain	114.5 mm (4.5 in)	23.6 mm (0.9 in)	23 years	39 of 100 (Notable)
30 June 1964	Brockville, CA	daily high max	35.0 C (95.0 F)	1.7 C (3.1 F)	85 years	38 of 100 (Notable)
30 June 1964	Nowgong, IN	daily rain	127.7 mm (5.0 in)	52.5 mm (2.1 in)	9 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

1826 to 1964

Records set or tied on this calendar date in each year from 1826 to 1964. 1964 had 434 records.

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

Records on 06-30 in each year
Year	Records
1826	1
1832	1
1835	2
1843	2
1846	1
1848	2
1849	1
1853	1
1855	1
1857	1
1860	1
1863	1
1865	1
1869	1
1871	1
1873	1
1876	1
1879	2
1882	2
1883	3
1885	4
1886	1
1887	2
1888	2
1889	1
1890	3
1891	2
1892	1
1894	1
1895	1
1896	2
1897	6
1898	3
1899	4
1900	5
1901	9
1902	10
1903	8
1904	20
1905	23
1906	20
1907	12
1908	17
1909	39
1910	57
1911	12
1912	32
1913	99
1914	97
1915	40
1916	66
1917	39
1918	54
1919	72
1920	319
1921	121
1922	133
1923	309
1924	194
1925	113
1926	65
1927	240
1928	137
1929	213
1930	168
1931	774
1932	154
1933	571
1934	331
1935	347
1936	620
1937	458
1938	330
1939	438
1940	346
1941	341
1942	408
1943	790
1944	272
1945	671
1946	631
1947	487
1948	340
1949	403
1950	494
1951	517
1952	533
1953	404
1954	426
1955	432
1956	409
1957	592
1958	423
1959	948
1960	270
1961	351
1962	375
1963	560
1964	434
1965	240
1966	379
1967	414
1968	752
1969	459
1970	730
1971	459
1972	558
1973	623
1974	643
1975	414
1976	607
1977	662
1978	721
1979	601
1980	935
1981	838
1982	1,230
1983	752
1984	722
1985	829
1986	745
1987	1,044
1988	1,216
1989	953
1990	1,191
1991	1,129
1992	1,670
1993	711
1994	951
1995	1,354
1996	889
1997	938
1998	1,714
1999	910
2000	861
2001	778
2002	904
2003	896
2004	998
2005	1,526
2006	723
2007	736
2008	852
2009	1,052
2010	1,069
2011	1,057
2012	1,416
2013	963
2014	496
2015	1,018
2016	371
2017	642
2018	625
2019	1,042
2020	1,151
2021	1,442
2022	709
2023	531
2024	1,004
2025	858
2026	999

Download the Data

Data for records on 1964-06-30: 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 20	314
20 to 40	19
40 to 60	7
60 to 80	2
80 to 100	1