Weather Records on 21 June 1963

667 weather records were set or tied worldwide on 21 June 1963. Highest significance: Fort Macleod, CA.

Key Facts for 21 June 1963

On 21 June 1963, 667 weather records were set or tied at long-record stations worldwide.
72 were record highs and 340 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 6 monthly and 660 daily.
Fort Macleod set a daily record precipitation of 76.7 mm (3.0 in) on 21 June 1963.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 430 records.

Record Map

667 stations

667 station records on 21 June 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fort Macleod	Canada	Record daily precipitation	76.7 mm (3.0 in)	59 of 100 (Notable)
Lethbridge Cda	Canada	Record daily precipitation	92.7 mm (3.6 in)	56 of 100 (Notable)
Lyndon	Canada	Record daily precipitation	72.1 mm (2.8 in)	56 of 100 (Notable)
Tugaske	Canada	Record daily precipitation	72.6 mm (2.9 in)	56 of 100 (Notable)
Paintsville 1E	United States	Record daily precipitation	102.1 mm (4.0 in)	56 of 100 (Notable)
Wastina Hemaruka	Canada	Record daily precipitation	55.1 mm (2.2 in)	54 of 100 (Notable)
Gagetown 2	Canada	Record daily precipitation	38.1 mm (1.5 in)	53 of 100 (Notable)
Fremont	United States	Record daily precipitation	74.4 mm (2.9 in)	53 of 100 (Notable)
Logan	United States	Record daily precipitation	50.0 mm (2.0 in)	53 of 100 (Notable)
Grand Manan	Canada	Record daily precipitation	34.5 mm (1.4 in)	50 of 100 (Notable)
Bagalkot	India	Record daily precipitation	109.2 mm (4.3 in)	50 of 100 (Notable)
Easton	United States	Record daily precipitation	54.1 mm (2.1 in)	47 of 100 (Notable)
Hanna	Canada	Record daily precipitation	53.3 mm (2.1 in)	46 of 100 (Notable)
Weimar	Germany	Record daily precipitation	26.3 mm (1.0 in)	46 of 100 (Notable)
Brooks Ahrc	Canada	Record daily precipitation	56.1 mm (2.2 in)	43 of 100 (Notable)
Heidelberg	United States	Record daily precipitation	56.1 mm (2.2 in)	43 of 100 (Notable)
Syracuse	United States	Record daily precipitation	74.9 mm (2.9 in)	43 of 100 (Notable)
Lingasugur	India	Record daily precipitation	37.8 mm (1.5 in)	41 of 100 (Notable)
Cap Chat	Canada	Record daily precipitation	30.2 mm (1.2 in)	40 of 100 (Notable)
Naco	Canada	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Claresholm Meadow Creek	Canada	Record daily precipitation	48.0 mm (1.9 in)	39 of 100 (Notable)
Elko	Canada	Record daily precipitation	45.7 mm (1.8 in)	38 of 100 (Notable)
Edinburg	United States	Record low maximum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Brooks 1	Canada	Record daily precipitation	52.1 mm (2.1 in)	36 of 100 (Notable)
High River	Canada	Record daily precipitation	67.3 mm (2.6 in)	36 of 100 (Notable)
Mountain View	Canada	Record daily precipitation	54.1 mm (2.1 in)	36 of 100 (Notable)
Port Daniel	Canada	Record daily precipitation	43.2 mm (1.7 in)	35 of 100 (Notable)
McKenzie Rvr Rs	United States	Record daily precipitation	25.4 mm (1.0 in)	35 of 100 (Notable)
Viking	Canada	Record daily precipitation	58.4 mm (2.3 in)	34 of 100 (Routine)
Chipman	Canada	Record daily precipitation	45.2 mm (1.8 in)	34 of 100 (Routine)
Guntersville	United States	Record daily precipitation	48.8 mm (1.9 in)	34 of 100 (Routine)
Dumas	United States	Record daily precipitation	60.5 mm (2.4 in)	34 of 100 (Routine)
Ashland #2	United States	Record daily precipitation	62.7 mm (2.5 in)	34 of 100 (Routine)
Connellsville	United States	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Williamson	United States	Record daily precipitation	48.3 mm (1.9 in)	34 of 100 (Routine)
Levan	United States	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Albion	United States	Record low minimum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
Oberlin	United States	Record low minimum temperature	3.3 C (37.9 F)	32 of 100 (Routine)
Stevens Pt	United States	Record low minimum temperature	2.8 C (37.0 F)	32 of 100 (Routine)
Watertown Wwtp	United States	Record low minimum temperature	3.3 C (37.9 F)	32 of 100 (Routine)
Gleichen	Canada	Record daily precipitation	64.3 mm (2.5 in)	31 of 100 (Routine)
Astana	Kazakhstan	Record high minimum temperature	20.9 C (69.6 F)	31 of 100 (Routine)
Lake Arthur 7 SW	United States	Record daily precipitation	90.2 mm (3.6 in)	31 of 100 (Routine)
Orovada 3 W	United States	Record daily precipitation	25.1 mm (1.0 in)	31 of 100 (Routine)
Kingsport	United States	Record daily precipitation	38.4 mm (1.5 in)	31 of 100 (Routine)
Oshkosh	United States	Record low minimum temperature	3.9 C (39.0 F)	31 of 100 (Routine)
Beaver Mines	Canada	Record daily precipitation	73.9 mm (2.9 in)	30 of 100 (Routine)
Boonville 2 N	United States	Record daily precipitation	36.6 mm (1.4 in)	30 of 100 (Routine)
San Sebastian - Igueldo	Spain	Record high maximum temperature	35.0 C (95.0 F)	29 of 100 (Routine)
Milford 2 SE	United States	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)
Watseka Public Works	United States	Record low minimum temperature	5.6 C (42.1 F)	29 of 100 (Routine)
Donaldsonville 4 SW	United States	Record low maximum temperature	27.2 C (81.0 F)	29 of 100 (Routine)
New Iberia AP - Acadiana Rgnl	United States	Record low maximum temperature	26.7 C (80.1 F)	29 of 100 (Routine)
Reserve	United States	Record daily precipitation	41.1 mm (1.6 in)	29 of 100 (Routine)
Brodhead Wwtp	United States	Record low minimum temperature	3.9 C (39.0 F)	29 of 100 (Routine)
Chilton	United States	Record low minimum temperature	1.1 C (34.0 F)	29 of 100 (Routine)
Manitowoc	United States	Record low minimum temperature	3.9 C (39.0 F)	29 of 100 (Routine)
Waupaca	United States	Record low minimum temperature	2.8 C (37.0 F)	29 of 100 (Routine)
Traverse Cy Cherry Capital AP	United States	Record low minimum temperature	2.2 C (36.0 F)	29 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record low maximum temperature	29.4 C (84.9 F)	28 of 100 (Routine)

Counts by Type and Timescale

667 records

Records set or tied on 21 June 1963 by type: Highest daily maximum 18, Lowest daily maximum 127, Highest daily minimum 54, Lowest daily minimum 213, Heaviest daily rainfall 254, Heaviest daily snowfall 1.

Records on 21 June 1963 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	127
Highest daily minimum	54
Lowest daily minimum	213
Heaviest daily rainfall	254
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 21 June 1963 by timescale: all-time 1, monthly 6, daily 660.

How Much Records Were Beaten By

524 broken records

Margins by which the 524 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.7. Ties are not counted.

Top 20 by Significance

21 June 1963

Top 20 records on 21 June 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1963	Fort Macleod, CA	daily rain	76.7 mm (3.0 in)	50.3 mm (2.0 in)	38 years	59 of 100 (Notable)
21 June 1963	Lethbridge Cda, CA	all-time rain	92.7 mm (3.6 in)	17.0 mm (0.7 in)	46 years	56 of 100 (Notable)
21 June 1963	Lyndon, CA	daily rain	72.1 mm (2.8 in)	62.7 mm (2.5 in)	37 years	56 of 100 (Notable)
21 June 1963	Tugaske, CA	daily rain	72.6 mm (2.9 in)	47.2 mm (1.9 in)	40 years	56 of 100 (Notable)
21 June 1963	Paintsville 1E, US	monthly rain	102.1 mm (4.0 in)	51.0 mm (2.0 in)	13 years	56 of 100 (Notable)
21 June 1963	Wastina Hemaruka, CA	daily rain	55.1 mm (2.2 in)	32.0 mm (1.3 in)	32 years	54 of 100 (Notable)
21 June 1963	Gagetown 2, CA	daily rain	38.1 mm (1.5 in)	29.2 mm (1.1 in)	65 years	53 of 100 (Notable)
21 June 1963	Fremont, US	daily rain	74.4 mm (2.9 in)	46.5 mm (1.8 in)	53 years	53 of 100 (Notable)
21 June 1963	Logan, US	daily rain	50.0 mm (2.0 in)	36.8 mm (1.4 in)	50 years	53 of 100 (Notable)
21 June 1963	Grand Manan, CA	daily rain	34.5 mm (1.4 in)	28.9 mm (1.1 in)	63 years	50 of 100 (Notable)
21 June 1963	Bagalkot, IN	monthly rain	109.2 mm (4.3 in)	20.8 mm (0.8 in)	60 years	50 of 100 (Notable)
21 June 1963	Easton, US	daily rain	54.1 mm (2.1 in)	30.0 mm (1.2 in)	60 years	47 of 100 (Notable)
21 June 1963	Hanna, CA	daily rain	53.3 mm (2.1 in)	39.1 mm (1.5 in)	8 years	46 of 100 (Notable)
21 June 1963	Weimar, DE	daily rain	26.3 mm (1.0 in)	12.5 mm (0.5 in)	71 years	46 of 100 (Notable)
21 June 1963	Brooks Ahrc, CA	daily rain	56.1 mm (2.2 in)	21.8 mm (0.9 in)	40 years	43 of 100 (Notable)
21 June 1963	Heidelberg, US	daily rain	56.1 mm (2.2 in)	39.3 mm (1.5 in)	28 years	43 of 100 (Notable)
21 June 1963	Syracuse, US	daily rain	74.9 mm (2.9 in)	43.1 mm (1.7 in)	24 years	43 of 100 (Notable)
21 June 1963	Lingasugur, IN	daily rain	37.8 mm (1.5 in)	22.6 mm (0.9 in)	53 years	41 of 100 (Notable)
21 June 1963	Cap Chat, CA	daily rain	30.2 mm (1.2 in)	11.7 mm (0.5 in)	67 years	40 of 100 (Notable)
21 June 1963	Naco, CA	monthly rain	63.5 mm (2.5 in)	16.5 mm (0.6 in)	12 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

1802 to 1963

Records set or tied on this calendar date in each year from 1802 to 1963. 1963 had 667 records.

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

Records on 06-21 in each year
Year	Records
1802	1
1803	2
1805	1
1814	1
1821	3
1828	1
1831	1
1839	2
1846	1
1853	1
1855	1
1861	3
1865	1
1868	1
1869	4
1870	3
1871	1
1873	1
1874	1
1875	2
1879	1
1880	1
1881	1
1882	1
1883	1
1884	2
1885	1
1886	3
1887	1
1888	3
1889	1
1891	1
1892	2
1893	7
1895	6
1896	3
1897	3
1898	6
1899	6
1900	6
1901	5
1902	20
1903	15
1904	7
1905	14
1906	19
1907	15
1908	20
1909	19
1910	36
1911	12
1912	14
1913	34
1914	24
1915	40
1916	80
1917	97
1918	77
1919	32
1920	42
1921	85
1922	43
1923	229
1924	124
1925	333
1926	162
1927	146
1928	139
1929	84
1930	177
1931	340
1932	180
1933	645
1934	223
1935	247
1936	642
1937	475
1938	396
1939	250
1940	674
1941	401
1942	340
1943	439
1944	426
1945	709
1946	386
1947	637
1948	392
1949	391
1950	329
1951	347
1952	502
1953	761
1954	501
1955	271
1956	534
1957	932
1958	627
1959	356
1960	471
1961	956
1962	176
1963	667
1964	458
1965	400
1966	467
1967	789
1968	654
1969	687
1970	614
1971	394
1972	934
1973	683
1974	598
1975	996
1976	746
1977	476
1978	368
1979	857
1980	677
1981	889
1982	658
1983	752
1984	913
1985	516
1986	601
1987	940
1988	1,834
1989	856
1990	847
1991	1,067
1992	1,679
1993	939
1994	777
1995	978
1996	1,075
1997	1,037
1998	1,746
1999	994
2000	1,212
2001	658
2002	828
2003	1,034
2004	697
2005	1,090
2006	774
2007	1,085
2008	580
2009	1,060
2010	852
2011	1,340
2012	1,151
2013	571
2014	434
2015	707
2016	877
2017	954
2018	577
2019	969
2020	519
2021	1,132
2022	774
2023	987
2024	679
2025	1,536
2026	736

Download the Data

Data for records on 1963-06-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	441
10 to 20	49
20 to 30	19
30 to 40	8
40 to 50	4
50 to 60	2
60 to 70	1