Weather Records on 20 April 1963

595 weather records were set or tied worldwide on 20 April 1963. Highest significance: Austin 3 S, US.

Key Facts for 20 April 1963

On 20 April 1963, 595 weather records were set or tied at long-record stations worldwide.
209 were record highs and 191 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 43 monthly and 549 daily.
Austin 3 S set an all-time record daily snowfall of 45.7 cm (18.0 in) on 20 April 1963.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 461 records.

Record Map

595 stations

595 station records on 20 April 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Austin 3 S	United States	Record daily snowfall	45.7 cm (18.0 in)	69 of 100 (Major)
Boca	United States	Record daily snowfall	38.1 cm (15.0 in)	58 of 100 (Notable)
Bathurst	Canada	Record daily snowfall	20.3 cm (8.0 in)	57 of 100 (Notable)
Dayville	United States	Record daily snowfall	30.5 cm (12.0 in)	56 of 100 (Notable)
Austin 3 S	United States	Record daily precipitation	41.1 mm (1.6 in)	55 of 100 (Notable)
Gaudan-In-Turkmen	Turkmenistan	Record daily precipitation	48.4 mm (1.9 in)	48 of 100 (Notable)
Alturas	United States	Record daily snowfall	35.6 cm (14.0 in)	46 of 100 (Notable)
Sao Jose Do Belmonte	Brazil	Record daily precipitation	80.0 mm (3.1 in)	45 of 100 (Notable)
Palermo	Italy	Record daily precipitation	50.5 mm (2.0 in)	44 of 100 (Notable)
Circleville	United States	Record daily precipitation	32.8 mm (1.3 in)	42 of 100 (Notable)
Prospect 2 SW	United States	Record daily snowfall	15.2 cm (6.0 in)	42 of 100 (Notable)
Big Timber	United States	Record daily snowfall	8.9 cm (3.5 in)	39 of 100 (Notable)
Rimrock Tieton Dam	United States	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Bridgeville 1 NW	United States	Record high minimum temperature	20.6 C (69.1 F)	38 of 100 (Notable)
Denton 2 E	United States	Record high minimum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Weldon	United States	Record high minimum temperature	21.1 C (70.0 F)	38 of 100 (Notable)
Bradford Cntrl Fs	United States	Record daily precipitation	32.8 mm (1.3 in)	37 of 100 (Notable)
Sta. Cruz de Tenerife	Spain	Record high maximum temperature	31.0 C (87.8 F)	35 of 100 (Notable)
Tahoe City	United States	Record daily snowfall	33.0 cm (13.0 in)	35 of 100 (Notable)
Twin Lakes	United States	Record daily snowfall	63.5 cm (25.0 in)	35 of 100 (Notable)
Mt Airy 2 W	United States	Record high minimum temperature	19.4 C (66.9 F)	35 of 100 (Notable)
Jackson	United States	Record daily snowfall	6.4 cm (2.5 in)	35 of 100 (Notable)
Montpelier Rs	United States	Record daily snowfall	7.6 cm (3.0 in)	34 of 100 (Routine)
McGill	United States	Record low minimum temperature	-8.3 C (17.1 F)	34 of 100 (Routine)
Pattikonda	India	Record daily precipitation	46.1 mm (1.8 in)	33 of 100 (Routine)
Wells	United States	Record low maximum temperature	1.1 C (34.0 F)	33 of 100 (Routine)
Beulah	United States	Record low maximum temperature	4.4 C (39.9 F)	33 of 100 (Routine)
Warsaw 2 NW	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Woodfords	United States	Record daily snowfall	12.7 cm (5.0 in)	32 of 100 (Routine)
Southern Pines 2 W	United States	Record high minimum temperature	20.0 C (68.0 F)	32 of 100 (Routine)
Eaton	United States	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Redmond 2 W	United States	Record low maximum temperature	3.3 C (37.9 F)	32 of 100 (Routine)
Zuur Anys	South Africa	Record daily precipitation	28.0 mm (1.1 in)	31 of 100 (Routine)
Calera	United States	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
Hetch Hetchy	United States	Record snow depth	10.2 cm (4.0 in)	31 of 100 (Routine)
Alexandria Bay 1 SW	United States	Record daily precipitation	31.2 mm (1.2 in)	31 of 100 (Routine)
Kent	United States	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Heber	United States	Record daily snowfall	15.2 cm (6.0 in)	31 of 100 (Routine)
Ashland	United States	Record high minimum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Sacramento 5 ESE	United States	Record low maximum temperature	9.4 C (48.9 F)	31 of 100 (Routine)
Baker Kbkr	United States	Record daily snowfall	15.2 cm (6.0 in)	31 of 100 (Routine)
Kentville Cda	Canada	Record daily precipitation	28.7 mm (1.1 in)	30 of 100 (Routine)
Russellville	United States	Record high maximum temperature	31.1 C (88.0 F)	30 of 100 (Routine)
Easton	United States	Record high minimum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Princess Anne	United States	Record high minimum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Fremont 5 NW	United States	Record low maximum temperature	-0.6 C (30.9 F)	30 of 100 (Routine)
Lodi	United States	Record low maximum temperature	10.6 C (51.1 F)	29 of 100 (Routine)
Truckee Rs	United States	Record daily precipitation	31.5 mm (1.2 in)	29 of 100 (Routine)
Truckee Rs	United States	Record daily snowfall	38.1 cm (15.0 in)	29 of 100 (Routine)
Tarboro 1 S	United States	Record high minimum temperature	20.0 C (68.0 F)	29 of 100 (Routine)
Rock Creek	United States	Record daily snowfall	11.4 cm (4.5 in)	29 of 100 (Routine)
Hot Springs	United States	Record high minimum temperature	13.9 C (57.0 F)	29 of 100 (Routine)
Laurel 3 W	United States	Record high minimum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Haskinville	United States	Record daily precipitation	29.7 mm (1.2 in)	28 of 100 (Routine)
Elizabeth City	United States	Record high minimum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Raleigh State UNIV	United States	Record high minimum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Snake Creek Powerhouse	United States	Record daily precipitation	27.9 mm (1.1 in)	28 of 100 (Routine)
Portland Rfc City	United States	Record low maximum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Newport	United States	Record low maximum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Mahbubabad	India	Record daily precipitation	76.2 mm (3.0 in)	27 of 100 (Routine)

Counts by Type and Timescale

595 records

Records set or tied on 20 April 1963 by type: Highest daily maximum 55, Lowest daily maximum 139, Highest daily minimum 154, Lowest daily minimum 52, Heaviest daily rainfall 130, Heaviest daily snowfall 51, Deepest snow cover 14.

Records on 20 April 1963 by type
Record type	Records
Highest daily maximum	55
Lowest daily maximum	139
Highest daily minimum	154
Lowest daily minimum	52
Heaviest daily rainfall	130
Heaviest daily snowfall	51
Deepest snow cover	14

Records on 20 April 1963 by timescale: all-time 3, monthly 43, daily 549.

How Much Records Were Beaten By

464 broken records

Margins by which the 464 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 381.0. Ties are not counted.

Top 20 by Significance

20 April 1963

Top 20 records on 20 April 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1963	Austin 3 S, US	all-time snowfall	45.7 cm (18.0 in)	10.1 cm (4.0 in)	47 years	69 of 100 (Major)
20 April 1963	Boca, US	daily snowfall	38.1 cm (15.0 in)	35.6 cm (14.0 in)	50 years	58 of 100 (Notable)
20 April 1963	Bathurst, CA	daily snowfall	20.3 cm (8.0 in)	12.7 cm (5.0 in)	85 years	57 of 100 (Notable)
20 April 1963	Dayville, US	all-time snowfall	30.5 cm (12.0 in)	8.9 cm (3.5 in)	46 years	56 of 100 (Notable)
20 April 1963	Austin 3 S, US	monthly rain	41.1 mm (1.6 in)	19.0 mm (0.7 in)	0 years	55 of 100 (Notable)
20 April 1963	Gaudan-In-Turkmen, TM	daily rain	48.4 mm (1.9 in)	18.4 mm (0.7 in)	54 years	48 of 100 (Notable)
20 April 1963	Alturas, US	all-time snowfall	35.6 cm (14.0 in)	7.7 cm (3.0 in)	25 years	46 of 100 (Notable)
20 April 1963	Sao Jose Do Belmonte, BR	daily rain	80.0 mm (3.1 in)	49.1 mm (1.9 in)	26 years	45 of 100 (Notable)
20 April 1963	Palermo, IT	daily rain	50.5 mm (2.0 in)	23.8 mm (0.9 in)	14 years	44 of 100 (Notable)
20 April 1963	Circleville, US	daily rain	32.8 mm (1.3 in)	13.7 mm (0.5 in)	66 years	42 of 100 (Notable)
20 April 1963	Prospect 2 SW, US	daily snowfall	15.2 cm (6.0 in)	11.9 cm (4.7 in)	30 years	42 of 100 (Notable)
20 April 1963	Big Timber, US	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	68 years	39 of 100 (Notable)
20 April 1963	Rimrock Tieton Dam, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	44 years	39 of 100 (Notable)
20 April 1963	Bridgeville 1 NW, US	monthly high min	20.6 C (69.1 F)	0.6 C (1.1 F)	66 years	38 of 100 (Notable)
20 April 1963	Denton 2 E, US	monthly high min	20.0 C (68.0 F)	0.6 C (1.1 F)	67 years	38 of 100 (Notable)
20 April 1963	Weldon, US	monthly high min	21.1 C (70.0 F)	0.5 C (0.9 F)	66 years	38 of 100 (Notable)
20 April 1963	Bradford Cntrl Fs, US	daily rain	32.8 mm (1.3 in)	15.5 mm (0.6 in)	33 years	37 of 100 (Notable)
20 April 1963	Sta. Cruz de Tenerife, ES	daily high max	31.0 C (87.8 F)	4.8 C (8.6 F)	29 years	35 of 100 (Notable)
20 April 1963	Tahoe City, US	daily snowfall	33.0 cm (13.0 in)	22.8 cm (9.0 in)	37 years	35 of 100 (Notable)
20 April 1963	Twin Lakes, US	daily snowfall	63.5 cm (25.0 in)	38.1 cm (15.0 in)	18 years	35 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

1807 to 1963

Records set or tied on this calendar date in each year from 1807 to 1963. 1963 had 595 records.

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

Records on 04-20 in each year
Year	Records
1807	3
1817	1
1838	1
1849	2
1851	1
1852	4
1854	1
1858	1
1860	1
1864	1
1865	3
1868	1
1869	1
1870	1
1872	1
1874	3
1875	4
1876	1
1878	2
1880	2
1881	2
1884	1
1885	1
1886	2
1889	1
1891	2
1892	1
1893	6
1894	8
1895	7
1896	3
1897	6
1898	1
1899	1
1901	8
1902	3
1903	14
1904	31
1905	9
1906	12
1907	18
1908	14
1909	22
1910	25
1911	18
1912	12
1913	19
1914	46
1915	45
1916	19
1917	33
1918	42
1919	17
1920	49
1921	27
1922	40
1923	157
1924	113
1925	169
1926	310
1927	442
1928	212
1929	182
1930	87
1931	255
1932	166
1933	279
1934	384
1935	384
1936	311
1937	427
1938	339
1939	158
1940	519
1941	558
1942	223
1943	670
1944	304
1945	391
1946	395
1947	308
1948	493
1949	477
1950	329
1951	690
1952	552
1953	1,071
1954	377
1955	623
1956	384
1957	730
1958	327
1959	563
1960	472
1961	1,078
1962	487
1963	595
1964	749
1965	724
1966	1,174
1967	864
1968	975
1969	382
1970	948
1971	765
1972	531
1973	982
1974	673
1975	344
1976	661
1977	693
1978	800
1979	495
1980	1,539
1981	706
1982	906
1983	1,844
1984	922
1985	1,140
1986	770
1987	1,447
1988	1,144
1989	1,187
1990	1,495
1991	1,075
1992	1,009
1993	772
1994	756
1995	1,351
1996	970
1997	833
1998	1,490
1999	674
2000	931
2001	752
2002	1,081
2003	758
2004	567
2005	707
2006	859
2007	582
2008	1,110
2009	845
2010	693
2011	1,477
2012	726
2013	1,520
2014	384
2015	702
2016	650
2017	734
2018	1,309
2019	1,019
2020	449
2021	1,215
2022	596
2023	828
2024	673
2025	836
2026	533

Download the Data

Data for records on 1963-04-20: 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	435
50 to 100	16
100 to 150	6
150 to 200	3
200 to 250	2
250 to 300	0
300 to 350	0
350 to 400	2