Weather Records on 21 September 1963

306 weather records were set or tied worldwide on 21 September 1963. Highest significance: Vladikavkaz, RU.

Key Facts for 21 September 1963

On 21 September 1963, 306 weather records were set or tied at long-record stations worldwide.
81 were record highs and 58 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 297 daily.
Vladikavkaz set a daily record precipitation of 46.0 mm (1.8 in) on 21 September 1963.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 452 records.

Record Map

306 stations

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

Weather records on 21 September 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Vladikavkaz	Russia	Record daily precipitation	46.0 mm (1.8 in)	64 of 100 (Major)
Healy	United States	Record daily precipitation	126.7 mm (5.0 in)	64 of 100 (Major)
Palisade	United States	Record daily precipitation	70.4 mm (2.8 in)	60 of 100 (Major)
Scott City	United States	Record daily precipitation	79.8 mm (3.1 in)	57 of 100 (Notable)
Cimarron 4 SW	United States	Record daily precipitation	61.2 mm (2.4 in)	52 of 100 (Notable)
Deerfield 10 NNW	United States	Record daily precipitation	76.2 mm (3.0 in)	50 of 100 (Notable)
Quinter	United States	Record daily precipitation	71.1 mm (2.8 in)	49 of 100 (Notable)
Wilsonville	United States	Record daily precipitation	87.6 mm (3.4 in)	49 of 100 (Notable)
Wakeeney	United States	Record daily precipitation	59.7 mm (2.4 in)	48 of 100 (Notable)
Motozintla (Smn)	Mexico	Record daily precipitation	74.9 mm (2.9 in)	47 of 100 (Notable)
Oberlin	United States	Record daily precipitation	57.2 mm (2.3 in)	47 of 100 (Notable)
Upland 2NE	United States	Record daily precipitation	103.6 mm (4.1 in)	47 of 100 (Notable)
Sholavandan	India	Record daily precipitation	97.0 mm (3.8 in)	45 of 100 (Notable)
Andenes	Norway	Record daily precipitation	34.9 mm (1.4 in)	44 of 100 (Notable)
Bird City 10S	United States	Record daily precipitation	48.3 mm (1.9 in)	44 of 100 (Notable)
Mysore	India	Record daily precipitation	80.2 mm (3.2 in)	43 of 100 (Notable)
Bertrand	United States	Record daily precipitation	59.2 mm (2.3 in)	43 of 100 (Notable)
Curtis	United States	Record daily precipitation	39.9 mm (1.6 in)	43 of 100 (Notable)
Lodgepole	United States	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Maxwell 3 NW	United States	Record daily precipitation	58.4 mm (2.3 in)	40 of 100 (Notable)
Hill City Muni AP	United States	Record daily precipitation	42.7 mm (1.7 in)	39 of 100 (Notable)
Cambridge	United States	Record daily precipitation	76.2 mm (3.0 in)	38 of 100 (Notable)
Madrid	United States	Record daily precipitation	27.7 mm (1.1 in)	38 of 100 (Notable)
Oshkosh	United States	Record daily precipitation	29.7 mm (1.2 in)	38 of 100 (Notable)
Leoti	United States	Record daily precipitation	39.1 mm (1.5 in)	37 of 100 (Notable)
Saint Paul	United States	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Naduvattam	India	Record daily precipitation	40.4 mm (1.6 in)	36 of 100 (Notable)
Krakmo	Norway	Record daily precipitation	56.7 mm (2.2 in)	36 of 100 (Notable)
Saint Francis	United States	Record daily precipitation	45.5 mm (1.8 in)	35 of 100 (Notable)
Haigler	United States	Record daily precipitation	60.7 mm (2.4 in)	35 of 100 (Notable)
Sterling	United States	Record daily precipitation	25.7 mm (1.0 in)	33 of 100 (Routine)
Miller	United States	Record daily precipitation	34.0 mm (1.3 in)	33 of 100 (Routine)
Holdrege	United States	Record daily precipitation	41.9 mm (1.6 in)	32 of 100 (Routine)
Stratton	United States	Record daily precipitation	59.9 mm (2.4 in)	32 of 100 (Routine)
Gove 4W	United States	Record daily precipitation	109.2 mm (4.3 in)	31 of 100 (Routine)
Franklin	United States	Record daily precipitation	33.8 mm (1.3 in)	31 of 100 (Routine)
Black Lake	United States	Record daily precipitation	29.5 mm (1.2 in)	31 of 100 (Routine)
Frazerpet	India	Record daily precipitation	57.4 mm (2.3 in)	30 of 100 (Routine)
Harur	India	Record daily precipitation	54.5 mm (2.1 in)	30 of 100 (Routine)
Lakin	United States	Record daily precipitation	36.6 mm (1.4 in)	30 of 100 (Routine)
Barkerville	Canada	Record high minimum temperature	7.2 C (45.0 F)	29 of 100 (Routine)
Barur	India	Record daily precipitation	62.0 mm (2.4 in)	29 of 100 (Routine)
Mudukulathur	India	Record daily precipitation	36.3 mm (1.4 in)	29 of 100 (Routine)
Syracuse 1NE	United States	Record daily precipitation	27.7 mm (1.1 in)	29 of 100 (Routine)
Anekal	India	Record daily precipitation	109.2 mm (4.3 in)	28 of 100 (Routine)
Ramos Arizpe (Smn)	Mexico	Record daily precipitation	48.8 mm (1.9 in)	28 of 100 (Routine)
Benkelman 1N	United States	Record daily precipitation	71.6 mm (2.8 in)	28 of 100 (Routine)
Chadron 3SW	United States	Record daily precipitation	26.2 mm (1.0 in)	28 of 100 (Routine)
Dolphin@S Nose Obsy	India	Record daily precipitation	58.0 mm (2.3 in)	27 of 100 (Routine)
Deadwood Dam	United States	Record high minimum temperature	8.3 C (46.9 F)	27 of 100 (Routine)
Atwood	United States	Record daily precipitation	72.9 mm (2.9 in)	27 of 100 (Routine)
Arthur	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Elwood 8 S	United States	Record daily precipitation	99.6 mm (3.9 in)	27 of 100 (Routine)
Orleans 2 W	United States	Record daily precipitation	42.2 mm (1.7 in)	27 of 100 (Routine)
Rio Grande City	United States	Record daily precipitation	45.5 mm (1.8 in)	27 of 100 (Routine)
Innsbruck	Austria	Record high minimum temperature	14.5 C (58.1 F)	26 of 100 (Routine)
Quatsino	Canada	Record daily precipitation	39.1 mm (1.5 in)	26 of 100 (Routine)
Palani	India	Record daily precipitation	27.0 mm (1.1 in)	26 of 100 (Routine)
Julesburg	United States	Record daily precipitation	27.9 mm (1.1 in)	26 of 100 (Routine)
Wray	United States	Record low maximum temperature	14.4 C (57.9 F)	26 of 100 (Routine)

Counts by Type and Timescale

306 records

Records set or tied on 21 September 1963 by type: Highest daily maximum 11, Lowest daily maximum 46, Highest daily minimum 70, Lowest daily minimum 12, Heaviest daily rainfall 167.

Records on 21 September 1963 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	46
Highest daily minimum	70
Lowest daily minimum	12
Heaviest daily rainfall	167
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1963 by timescale: all-time 0, monthly 9, daily 297.

How Much Records Were Beaten By

250 broken records

Margins by which the 250 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 88.1. Ties are not counted.

Top 20 by Significance

21 September 1963

Top 20 records on 21 September 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1963	Vladikavkaz, RU	daily rain	46.0 mm (1.8 in)	34.9 mm (1.4 in)	80 years	64 of 100 (Major)
21 September 1963	Healy, US	daily rain	126.7 mm (5.0 in)	88.1 mm (3.5 in)	60 years	64 of 100 (Major)
21 September 1963	Palisade, US	daily rain	70.4 mm (2.8 in)	63.5 mm (2.5 in)	52 years	60 of 100 (Major)
21 September 1963	Scott City, US	daily rain	79.8 mm (3.1 in)	75.5 mm (3.0 in)	37 years	57 of 100 (Notable)
21 September 1963	Cimarron 4 SW, US	daily rain	61.2 mm (2.4 in)	50.8 mm (2.0 in)	21 years	52 of 100 (Notable)
21 September 1963	Deerfield 10 NNW, US	daily rain	76.2 mm (3.0 in)	58.4 mm (2.3 in)	21 years	50 of 100 (Notable)
21 September 1963	Quinter, US	daily rain	71.1 mm (2.8 in)	63.2 mm (2.5 in)	8 years	49 of 100 (Notable)
21 September 1963	Wilsonville, US	monthly rain	87.6 mm (3.4 in)	19.0 mm (0.7 in)	62 years	49 of 100 (Notable)
21 September 1963	Wakeeney, US	daily rain	59.7 mm (2.4 in)	36.3 mm (1.4 in)	52 years	48 of 100 (Notable)
21 September 1963	Motozintla (Smn), MX	daily rain	74.9 mm (2.9 in)	48.0 mm (1.9 in)	12 years	47 of 100 (Notable)
21 September 1963	Oberlin, US	daily rain	57.2 mm (2.3 in)	22.9 mm (0.9 in)	67 years	47 of 100 (Notable)
21 September 1963	Upland 2NE, US	daily rain	103.6 mm (4.1 in)	81.2 mm (3.2 in)	8 years	47 of 100 (Notable)
21 September 1963	Sholavandan, IN	daily rain	97.0 mm (3.8 in)	65.0 mm (2.6 in)	18 years	45 of 100 (Notable)
21 September 1963	Andenes, NO	daily rain	34.9 mm (1.4 in)	18.9 mm (0.7 in)	12 years	44 of 100 (Notable)
21 September 1963	Bird City 10S, US	daily rain	48.3 mm (1.9 in)	42.5 mm (1.7 in)	1 year	44 of 100 (Notable)
21 September 1963	Mysore, IN	daily rain	80.2 mm (3.2 in)	53.0 mm (2.1 in)	4 years	43 of 100 (Notable)
21 September 1963	Bertrand, US	daily rain	59.2 mm (2.3 in)	44.7 mm (1.8 in)	1 year	43 of 100 (Notable)
21 September 1963	Curtis, US	daily rain	39.9 mm (1.6 in)	29.7 mm (1.2 in)	52 years	43 of 100 (Notable)
21 September 1963	Lodgepole, US	daily rain	33.0 mm (1.3 in)	20.8 mm (0.8 in)	38 years	40 of 100 (Notable)
21 September 1963	Maxwell 3 NW, US	monthly rain	58.4 mm (2.3 in)	12.7 mm (0.5 in)	37 years	40 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

1805 to 1963

Records set or tied on this calendar date in each year from 1805 to 1963. 1963 had 306 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	588
2026	469

Download the Data

Data for records on 1963-09-21: 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 20	214
20 to 40	22
40 to 60	8
60 to 80	4
80 to 100	2