Weather Records on 11 April 1963

450 weather records were set or tied worldwide on 11 April 1963. Highest significance: Nappan Cda, CA.

Key Facts for 11 April 1963

On 11 April 1963, 450 weather records were set or tied at long-record stations worldwide.
153 were record highs and 39 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 15 monthly and 434 daily.
Nappan Cda set a daily record snowfall of 35.6 cm (14.0 in) on 11 April 1963.
Across 164 earlier years (1800 to 2026) the same calendar date averaged 481 records.

Record Map

450 stations

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

Weather records on 11 April 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nappan Cda	Canada	Record daily snowfall	35.6 cm (14.0 in)	59 of 100 (Notable)
Artern	Germany	Record daily precipitation	25.6 mm (1.0 in)	56 of 100 (Notable)
Batalha	Brazil	Record daily precipitation	155.4 mm (6.1 in)	54 of 100 (Notable)
Ladismith (Tnk)	South Africa	Record daily precipitation	38.5 mm (1.5 in)	50 of 100 (Notable)
Venterstad	South Africa	Record daily precipitation	58.5 mm (2.3 in)	48 of 100 (Notable)
Adelaide (Pol)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	46 of 100 (Notable)
Bokfontein	South Africa	Record daily precipitation	35.0 mm (1.4 in)	46 of 100 (Notable)
Kareekloof	South Africa	Record daily precipitation	42.0 mm (1.7 in)	46 of 100 (Notable)
Mundagod	India	Record daily precipitation	69.9 mm (2.8 in)	45 of 100 (Notable)
Goondiwindi Post Office	Australia	Record high minimum temperature	28.9 C (84.0 F)	44 of 100 (Notable)
Vondeling(Sar)"T...Kraal"	South Africa	Record daily precipitation	36.0 mm (1.4 in)	44 of 100 (Notable)
Moncton	Canada	Record daily snowfall	32.5 cm (12.8 in)	43 of 100 (Notable)
Nuguru(Venkitapu)	India	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Nappan Cda	Canada	Record daily precipitation	35.6 mm (1.4 in)	41 of 100 (Notable)
Tbilisi	Georgia	Record daily precipitation	25.2 mm (1.0 in)	41 of 100 (Notable)
Putbus	Germany	Record high minimum temperature	7.3 C (45.1 F)	40 of 100 (Notable)
Baker	United States	Record daily snowfall	30.5 cm (12.0 in)	39 of 100 (Notable)
Douglas	South Africa	Record daily precipitation	26.0 mm (1.0 in)	38 of 100 (Notable)
Baker	United States	Record daily precipitation	27.7 mm (1.1 in)	38 of 100 (Notable)
Prattville	United States	Record high maximum temperature	34.4 C (93.9 F)	36 of 100 (Notable)
Barkly West (Tnk)	South Africa	Record daily precipitation	32.0 mm (1.3 in)	35 of 100 (Notable)
Rio Grande City	United States	Record high maximum temperature	43.3 C (109.9 F)	35 of 100 (Notable)
Musgrave	Australia	Record daily precipitation	59.7 mm (2.4 in)	34 of 100 (Routine)
Forster - Tuncurry R.V.C.P.	Australia	Record daily precipitation	97.8 mm (3.9 in)	34 of 100 (Routine)
Moncton	Canada	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Steele 4N	United States	Record daily snowfall	20.3 cm (8.0 in)	34 of 100 (Routine)
Carlton Hill	Australia	Record daily precipitation	47.0 mm (1.9 in)	33 of 100 (Routine)
Corsicana	United States	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
Acude Tucunduba	Brazil	Record daily precipitation	66.0 mm (2.6 in)	32 of 100 (Routine)
Dublin 2SE	United States	Record high maximum temperature	38.3 C (100.9 F)	32 of 100 (Routine)
Springfield	Canada	Record daily snowfall	17.8 cm (7.0 in)	31 of 100 (Routine)
Thiruvalla	India	Record daily precipitation	48.3 mm (1.9 in)	31 of 100 (Routine)
Wanakena Rngr School	United States	Record daily snowfall	25.4 cm (10.0 in)	31 of 100 (Routine)
Hatteras	United States	Record low minimum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Gospic	Croatia	Record high minimum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Baloda Bazar	India	Record daily precipitation	25.4 mm (1.0 in)	30 of 100 (Routine)
Wanda (Pol)	South Africa	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
McCloud	United States	Record daily snowfall	17.8 cm (7.0 in)	30 of 100 (Routine)
Sugar Land	United States	Record high maximum temperature	33.9 C (93.0 F)	30 of 100 (Routine)
Springbok	South Africa	Record daily precipitation	44.0 mm (1.7 in)	29 of 100 (Routine)
Benfontein	South Africa	Record daily precipitation	40.3 mm (1.6 in)	29 of 100 (Routine)
Natchitoches	United States	Record high maximum temperature	34.4 C (93.9 F)	29 of 100 (Routine)
Holy Cross	United States	Record low minimum temperature	-26.7 C (-16.1 F)	29 of 100 (Routine)
Timber Creek Police	Australia	Record daily precipitation	36.3 mm (1.4 in)	28 of 100 (Routine)
Chipurupally	India	Record daily precipitation	56.0 mm (2.2 in)	28 of 100 (Routine)
Bajramaly	Turkmenistan	Record high minimum temperature	15.2 C (59.4 F)	28 of 100 (Routine)
Karwar	India	Record daily precipitation	41.4 mm (1.6 in)	27 of 100 (Routine)
Loxton (Pol)	South Africa	Record daily precipitation	42.5 mm (1.7 in)	27 of 100 (Routine)
Tweefontein	South Africa	Record daily precipitation	28.0 mm (1.1 in)	27 of 100 (Routine)
Haskell	United States	Record high maximum temperature	36.7 C (98.1 F)	27 of 100 (Routine)
Kaufman 3 SE	United States	Record high maximum temperature	37.8 C (100.0 F)	27 of 100 (Routine)
Mabuiag Island	Australia	Record daily precipitation	64.3 mm (2.5 in)	26 of 100 (Routine)
Porto	Brazil	Record daily precipitation	77.2 mm (3.0 in)	26 of 100 (Routine)
Cap Chat	Canada	Record daily precipitation	35.6 mm (1.4 in)	26 of 100 (Routine)
Szombathely	Hungary	Record high minimum temperature	9.3 C (48.7 F)	26 of 100 (Routine)
Ladania	India	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Strydenberg (Pol)	South Africa	Record daily precipitation	36.0 mm (1.4 in)	26 of 100 (Routine)
Cuero	United States	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
Eastland	United States	Record high maximum temperature	37.2 C (99.0 F)	26 of 100 (Routine)
Weatherford	United States	Record high maximum temperature	35.6 C (96.1 F)	26 of 100 (Routine)

Counts by Type and Timescale

450 records

Records set or tied on 11 April 1963 by type: Highest daily maximum 106, Lowest daily maximum 21, Highest daily minimum 47, Lowest daily minimum 18, Heaviest daily rainfall 235, Heaviest daily snowfall 21, Deepest snow cover 2.

Records on 11 April 1963 by type
Record type	Records
Highest daily maximum	106
Lowest daily maximum	21
Highest daily minimum	47
Lowest daily minimum	18
Heaviest daily rainfall	235
Heaviest daily snowfall	21
Deepest snow cover	2

Records on 11 April 1963 by timescale: all-time 1, monthly 15, daily 434.

How Much Records Were Beaten By

385 broken records

Margins by which the 385 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

11 April 1963

Top 20 records on 11 April 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 April 1963	Nappan Cda, CA	daily snowfall	35.6 cm (14.0 in)	25.4 cm (10.0 in)	41 years	59 of 100 (Notable)
11 April 1963	Artern, DE	daily rain	25.6 mm (1.0 in)	21.7 mm (0.9 in)	32 years	56 of 100 (Notable)
11 April 1963	Batalha, BR	all-time rain	155.4 mm (6.1 in)	47.4 mm (1.9 in)	0 years	54 of 100 (Notable)
11 April 1963	Ladismith (Tnk), ZA	daily rain	38.5 mm (1.5 in)	15.1 mm (0.6 in)	84 years	50 of 100 (Notable)
11 April 1963	Venterstad, ZA	monthly rain	58.5 mm (2.3 in)	15.6 mm (0.6 in)	31 years	48 of 100 (Notable)
11 April 1963	Adelaide (Pol), ZA	daily rain	33.0 mm (1.3 in)	16.2 mm (0.6 in)	69 years	46 of 100 (Notable)
11 April 1963	Bokfontein, ZA	daily rain	35.0 mm (1.4 in)	24.6 mm (1.0 in)	40 years	46 of 100 (Notable)
11 April 1963	Kareekloof, ZA	daily rain	42.0 mm (1.7 in)	26.8 mm (1.1 in)	34 years	46 of 100 (Notable)
11 April 1963	Mundagod, IN	daily rain	69.9 mm (2.8 in)	53.1 mm (2.1 in)	9 years	45 of 100 (Notable)
11 April 1963	Goondiwindi Post Office, AU	monthly high min	28.9 C (84.0 F)	5.9 C (10.6 F)	36 years	44 of 100 (Notable)
11 April 1963	Vondeling(Sar)"T...Kraal", ZA	daily rain	36.0 mm (1.4 in)	25.8 mm (1.0 in)	42 years	44 of 100 (Notable)
11 April 1963	Moncton, CA	daily snowfall	32.5 cm (12.8 in)	17.3 cm (6.8 in)	16 years	43 of 100 (Notable)
11 April 1963	Nuguru(Venkitapu), IN	daily rain	34.0 mm (1.3 in)	25.9 mm (1.0 in)	48 years	43 of 100 (Notable)
11 April 1963	Nappan Cda, CA	daily rain	35.6 mm (1.4 in)	22.9 mm (0.9 in)	20 years	41 of 100 (Notable)
11 April 1963	Tbilisi, GE	daily rain	25.2 mm (1.0 in)	6.6 mm (0.26 in)	75 years	41 of 100 (Notable)
11 April 1963	Putbus, DE	daily high min	7.3 C (45.1 F)	0.2 C (0.4 F)	103 years	40 of 100 (Notable)
11 April 1963	Baker, US	monthly snowfall	30.5 cm (12.0 in)	10.2 cm (4.0 in)	0 years	39 of 100 (Notable)
11 April 1963	Douglas, ZA	daily rain	26.0 mm (1.0 in)	14.6 mm (0.6 in)	40 years	38 of 100 (Notable)
11 April 1963	Baker, US	daily rain	27.7 mm (1.1 in)	18.0 mm (0.7 in)	0 years	38 of 100 (Notable)
11 April 1963	Prattville, US	monthly high max	34.4 C (93.9 F)	1.6 C (2.9 F)	56 years	36 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

1800 to 1963

Records set or tied on this calendar date in each year from 1800 to 1963. 1963 had 450 records.

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

Records on 04-11 in each year
Year	Records
1800	1
1803	1
1808	1
1809	1
1812	3
1818	1
1831	1
1832	1
1834	1
1837	1
1845	1
1854	1
1857	1
1863	2
1865	2
1866	1
1868	1
1869	3
1871	1
1874	1
1876	2
1879	2
1880	2
1881	1
1882	2
1885	1
1886	1
1887	2
1888	4
1889	2
1890	2
1891	2
1892	3
1894	7
1895	5
1896	3
1898	7
1899	11
1900	6
1901	4
1902	6
1903	13
1904	12
1905	20
1906	19
1907	7
1908	12
1909	30
1910	19
1911	19
1912	47
1913	48
1914	38
1915	127
1916	64
1917	62
1918	43
1919	42
1920	73
1921	32
1922	140
1923	89
1924	169
1925	197
1926	198
1927	156
1928	220
1929	214
1930	761
1931	185
1932	497
1933	481
1934	246
1935	261
1936	175
1937	245
1938	289
1939	611
1940	932
1941	579
1942	301
1943	546
1944	626
1945	890
1946	383
1947	478
1948	921
1949	402
1950	322
1951	623
1952	502
1953	594
1954	392
1955	610
1956	420
1957	508
1958	473
1959	582
1960	469
1961	532
1962	384
1963	450
1964	255
1965	763
1966	599
1967	757
1968	663
1969	353
1970	522
1971	495
1972	792
1973	1,479
1974	982
1975	851
1976	478
1977	1,231
1978	854
1979	977
1980	399
1981	1,036
1982	1,132
1983	1,040
1984	623
1985	952
1986	1,062
1987	440
1988	1,162
1989	1,931
1990	1,347
1991	1,287
1992	978
1993	722
1994	952
1995	2,134
1996	1,182
1997	3,077
1998	916
1999	1,318
2000	667
2001	1,865
2002	568
2003	1,156
2004	888
2005	930
2006	666
2007	962
2008	1,373
2009	1,102
2010	623
2011	1,664
2012	806
2013	1,482
2014	633
2015	399
2016	534
2017	489
2018	795
2019	812
2020	625
2021	892
2022	1,179
2023	1,036
2024	782
2025	1,177
2026	604

Download the Data

Data for records on 1963-04-11: 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 50	373
50 to 100	7
100 to 150	2
150 to 200	2
200 to 250	0
250 to 300	1