Weather Records on 11 September 1963

359 weather records were set or tied worldwide on 11 September 1963. Highest significance: Denison, US.

Key Facts for 11 September 1963

On 11 September 1963, 359 weather records were set or tied at long-record stations worldwide.
200 were record highs and 28 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 355 daily.
Denison set a daily record precipitation of 83.8 mm (3.3 in) on 11 September 1963.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 424 records.

Record Map

359 stations

359 station records on 11 September 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Denison	United States	Record daily precipitation	83.8 mm (3.3 in)	65 of 100 (Major)
Southampton	Canada	Record daily precipitation	54.1 mm (2.1 in)	57 of 100 (Notable)
Douglas	Australia	Record daily precipitation	33.0 mm (1.3 in)	55 of 100 (Notable)
Lamesa 1 SSE	United States	Record daily precipitation	64.8 mm (2.6 in)	54 of 100 (Notable)
Yorketown	Australia	Record daily precipitation	26.2 mm (1.0 in)	49 of 100 (Notable)
Korsakov	Russia	Record daily precipitation	43.7 mm (1.7 in)	49 of 100 (Notable)
Barcelona/Aeropuerto	Spain	Record daily precipitation	107.5 mm (4.2 in)	46 of 100 (Notable)
David City 4E	United States	Record daily precipitation	68.8 mm (2.7 in)	43 of 100 (Notable)
Puri	India	Record daily precipitation	116.7 mm (4.6 in)	40 of 100 (Notable)
Santander Centro	Spain	Record daily precipitation	67.4 mm (2.7 in)	39 of 100 (Notable)
Bowelling	Australia	Record daily precipitation	29.7 mm (1.2 in)	36 of 100 (Notable)
Bella Coola	Canada	Record high minimum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Ashland #2	United States	Record daily precipitation	55.9 mm (2.2 in)	35 of 100 (Notable)
Wahoo	United States	Record daily precipitation	52.1 mm (2.1 in)	35 of 100 (Notable)
Carlinville	United States	Record daily precipitation	66.8 mm (2.6 in)	34 of 100 (Routine)
Troy	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Konni	India	Record daily precipitation	61.0 mm (2.4 in)	32 of 100 (Routine)
Indpur	India	Record daily precipitation	48.2 mm (1.9 in)	32 of 100 (Routine)
Norwood	United States	Record daily precipitation	29.2 mm (1.1 in)	32 of 100 (Routine)
Harrow (Post Office)	Australia	Record daily precipitation	25.4 mm (1.0 in)	31 of 100 (Routine)
Chatillon-Sur-Seine	France	Record daily precipitation	32.5 mm (1.3 in)	31 of 100 (Routine)
Sonamukhi	India	Record daily precipitation	55.3 mm (2.2 in)	30 of 100 (Routine)
Zinapecuaro	Mexico	Record daily precipitation	31.5 mm (1.2 in)	30 of 100 (Routine)
Girona (Antic Institut)	Spain	Record daily precipitation	48.3 mm (1.9 in)	30 of 100 (Routine)
Vagra	India	Record daily precipitation	71.0 mm (2.8 in)	29 of 100 (Routine)
Vinton	United States	Record daily precipitation	30.0 mm (1.2 in)	29 of 100 (Routine)
Mavelikara	India	Record daily precipitation	92.2 mm (3.6 in)	28 of 100 (Routine)
Ft Pierce	United States	Record daily precipitation	76.7 mm (3.0 in)	28 of 100 (Routine)
Punta Gorda	United States	Record low minimum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Deobhog	India	Record daily precipitation	75.0 mm (3.0 in)	27 of 100 (Routine)
Santa Paula	United States	Record high maximum temperature	36.7 C (98.1 F)	27 of 100 (Routine)
High River	Canada	Record high minimum temperature	11.7 C (53.1 F)	26 of 100 (Routine)
Kisinev	Moldova	Record high minimum temperature	16.1 C (61.0 F)	26 of 100 (Routine)
Caldwell	United States	Record high maximum temperature	36.1 C (97.0 F)	26 of 100 (Routine)
Elsberry 1 S	United States	Record daily precipitation	32.5 mm (1.3 in)	26 of 100 (Routine)
Frederick	United States	Record high maximum temperature	40.6 C (105.1 F)	26 of 100 (Routine)
Ellerslie Post Office	Australia	Record daily precipitation	25.1 mm (1.0 in)	25 of 100 (Routine)
Fort Macleod	Canada	Record high minimum temperature	12.8 C (55.0 F)	25 of 100 (Routine)
Virden	Canada	Record high minimum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Rio Grande (Smn)	Mexico	Record low minimum temperature	2.8 C (37.0 F)	25 of 100 (Routine)
Louisiana Starks Nurse	United States	Record daily precipitation	52.3 mm (2.1 in)	25 of 100 (Routine)
Cape Sorell	Australia	Record daily precipitation	26.7 mm (1.1 in)	24 of 100 (Routine)
Carcross	Canada	Record high minimum temperature	8.9 C (48.0 F)	24 of 100 (Routine)
Gleichen	Canada	Record high minimum temperature	12.8 C (55.0 F)	24 of 100 (Routine)
Hyannis	United States	Record low minimum temperature	4.4 C (39.9 F)	24 of 100 (Routine)
Ocean Falls	Canada	Record high minimum temperature	16.7 C (62.1 F)	23 of 100 (Routine)
Klintonel	Canada	Record high minimum temperature	11.7 C (53.1 F)	23 of 100 (Routine)
Willow Creek	Canada	Record high minimum temperature	12.8 C (55.0 F)	23 of 100 (Routine)
Tamluk	India	Record daily precipitation	106.2 mm (4.2 in)	23 of 100 (Routine)
Kurgan-Tyube	Tajikistan	Record high minimum temperature	18.7 C (65.7 F)	23 of 100 (Routine)
Grenora	United States	Record high minimum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Chickasha	United States	Record high maximum temperature	40.6 C (105.1 F)	23 of 100 (Routine)
Walters	United States	Record high maximum temperature	40.0 C (104.0 F)	23 of 100 (Routine)
Brooks 1	Canada	Record high minimum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Cochrane	Canada	Record daily precipitation	37.6 mm (1.5 in)	22 of 100 (Routine)
Barcelona -Fabra Observatory	Spain	Record daily precipitation	32.8 mm (1.3 in)	22 of 100 (Routine)
Pasadena	United States	Record high maximum temperature	40.0 C (104.0 F)	22 of 100 (Routine)
Kalispell Glacier AP	United States	Record high minimum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Valier	United States	Record high minimum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
McKinney Muni AP	United States	Record high maximum temperature	38.3 C (100.9 F)	22 of 100 (Routine)

Counts by Type and Timescale

359 records

Records set or tied on 11 September 1963 by type: Highest daily maximum 75, Lowest daily maximum 8, Highest daily minimum 125, Lowest daily minimum 20, Heaviest daily rainfall 131.

Records on 11 September 1963 by type
Record type	Records
Highest daily maximum	75
Lowest daily maximum	8
Highest daily minimum	125
Lowest daily minimum	20
Heaviest daily rainfall	131
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 September 1963 by timescale: all-time 0, monthly 4, daily 355.

How Much Records Were Beaten By

273 broken records

Margins by which the 273 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.5. Ties are not counted.

Top 20 by Significance

11 September 1963

Top 20 records on 11 September 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1963	Denison, US	daily rain	83.8 mm (3.3 in)	53.1 mm (2.1 in)	61 years	65 of 100 (Major)
11 September 1963	Southampton, CA	daily rain	54.1 mm (2.1 in)	37.8 mm (1.5 in)	26 years	57 of 100 (Notable)
11 September 1963	Douglas, AU	daily rain	33.0 mm (1.3 in)	20.8 mm (0.8 in)	48 years	55 of 100 (Notable)
11 September 1963	Lamesa 1 SSE, US	daily rain	64.8 mm (2.6 in)	53.9 mm (2.1 in)	46 years	54 of 100 (Notable)
11 September 1963	Yorketown, AU	daily rain	26.2 mm (1.0 in)	10.2 mm (0.4 in)	63 years	49 of 100 (Notable)
11 September 1963	Korsakov, RU	daily rain	43.7 mm (1.7 in)	23.5 mm (0.9 in)	65 years	49 of 100 (Notable)
11 September 1963	Barcelona/Aeropuerto, ES	daily rain	107.5 mm (4.2 in)	78.5 mm (3.1 in)	28 years	46 of 100 (Notable)
11 September 1963	David City 4E, US	daily rain	68.8 mm (2.7 in)	37.3 mm (1.5 in)	24 years	43 of 100 (Notable)
11 September 1963	Puri, IN	daily rain	116.7 mm (4.6 in)	39.5 mm (1.6 in)	53 years	40 of 100 (Notable)
11 September 1963	Santander Centro, ES	daily rain	67.4 mm (2.7 in)	37.8 mm (1.5 in)	10 years	39 of 100 (Notable)
11 September 1963	Bowelling, AU	daily rain	29.7 mm (1.2 in)	20.0 mm (0.8 in)	16 years	36 of 100 (Notable)
11 September 1963	Bella Coola, CA	daily high min	15.6 C (60.1 F)	3.4 C (6.1 F)	63 years	35 of 100 (Notable)
11 September 1963	Ashland #2, US	daily rain	55.9 mm (2.2 in)	14.5 mm (0.6 in)	62 years	35 of 100 (Notable)
11 September 1963	Wahoo, US	daily rain	52.1 mm (2.1 in)	32.0 mm (1.3 in)	29 years	35 of 100 (Notable)
11 September 1963	Carlinville, US	daily rain	66.8 mm (2.6 in)	22.1 mm (0.9 in)	34 years	34 of 100 (Routine)
11 September 1963	Troy, US	daily rain	50.8 mm (2.0 in)	42.7 mm (1.7 in)	16 years	34 of 100 (Routine)
11 September 1963	Konni, IN	daily rain	61.0 mm (2.4 in)	26.7 mm (1.1 in)	48 years	32 of 100 (Routine)
11 September 1963	Indpur, IN	daily rain	48.2 mm (1.9 in)	32.7 mm (1.3 in)	41 years	32 of 100 (Routine)
11 September 1963	Norwood, US	daily rain	29.2 mm (1.1 in)	16.0 mm (0.6 in)	20 years	32 of 100 (Routine)
11 September 1963	Harrow (Post Office), AU	daily rain	25.4 mm (1.0 in)	8.1 mm (0.32 in)	48 years	31 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

1809 to 1963

Records set or tied on this calendar date in each year from 1809 to 1963. 1963 had 359 records.

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

Records on 09-11 in each year
Year	Records
1809	1
1814	3
1818	1
1830	1
1836	1
1838	3
1839	1
1848	1
1850	1
1851	1
1854	2
1858	1
1860	2
1861	1
1863	2
1865	3
1866	1
1874	2
1876	1
1877	1
1879	1
1880	1
1882	4
1883	2
1884	1
1886	1
1888	2
1889	4
1890	2
1891	2
1892	1
1893	4
1894	2
1895	4
1896	1
1897	3
1898	3
1899	5
1900	1
1901	3
1902	15
1903	13
1904	4
1905	5
1906	10
1907	9
1908	20
1909	12
1910	19
1911	9
1912	25
1913	22
1914	52
1915	160
1916	17
1917	88
1918	62
1919	52
1920	158
1921	52
1922	78
1923	44
1924	290
1925	260
1926	137
1927	300
1928	127
1929	206
1930	136
1931	868
1932	210
1933	276
1934	144
1935	410
1936	567
1937	324
1938	288
1939	561
1940	891
1941	210
1942	234
1943	335
1944	446
1945	341
1946	262
1947	611
1948	424
1949	450
1950	462
1951	247
1952	549
1953	392
1954	363
1955	479
1956	539
1957	470
1958	748
1959	488
1960	423
1961	524
1962	480
1963	359
1964	1,195
1965	414
1966	392
1967	478
1968	835
1969	685
1970	474
1971	464
1972	507
1973	612
1974	430
1975	644
1976	920
1977	406
1978	911
1979	596
1980	474
1981	347
1982	862
1983	1,243
1984	888
1985	844
1986	1,221
1987	595
1988	1,019
1989	1,301
1990	840
1991	843
1992	672
1993	809
1994	713
1995	619
1996	1,030
1997	808
1998	1,821
1999	1,073
2000	1,469
2001	826
2002	1,059
2003	1,022
2004	740
2005	1,163
2006	1,132
2007	947
2008	916
2009	774
2010	965
2011	1,051
2012	687
2013	1,207
2014	1,100
2015	683
2016	677
2017	916
2018	763
2019	806
2020	1,235
2021	851
2022	617
2023	1,034
2024	889
2025	917
2026	615

Download the Data

Data for records on 1963-09-11: 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	232
10 to 20	18
20 to 30	11
30 to 40	8
40 to 50	1
50 to 60	2
60 to 70	0
70 to 80	1