Weather Records on 21 April 1957

824 weather records were set or tied worldwide on 21 April 1957. Highest significance: Fairbridge, AU.

Key Facts for 21 April 1957

On 21 April 1957, 824 weather records were set or tied at long-record stations worldwide.
459 were record highs and 42 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 26 monthly and 797 daily.
Fairbridge set a daily record precipitation of 54.6 mm (2.1 in) on 21 April 1957.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 460 records.

Record Map

824 stations

824 station records on 21 April 1957 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1957: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fairbridge	Australia	Record daily precipitation	54.6 mm (2.1 in)	51 of 100 (Notable)
Chattanooga	United States	Record daily precipitation	61.7 mm (2.4 in)	50 of 100 (Notable)
Newkirk 5NE	United States	Record daily precipitation	63.5 mm (2.5 in)	48 of 100 (Notable)
Hamilton	Canada	Record high minimum temperature	15.0 C (59.0 F)	46 of 100 (Notable)
Cape Naturaliste	Australia	Record daily precipitation	38.1 mm (1.5 in)	45 of 100 (Notable)
Carlyle	United States	Record daily precipitation	45.7 mm (1.8 in)	44 of 100 (Notable)
Levy	United States	Record daily precipitation	44.5 mm (1.8 in)	44 of 100 (Notable)
Greenbushes	Australia	Record daily precipitation	43.2 mm (1.7 in)	43 of 100 (Notable)
Quindalup	Australia	Record daily precipitation	57.4 mm (2.3 in)	43 of 100 (Notable)
Frederick	United States	Record daily precipitation	81.8 mm (3.2 in)	42 of 100 (Notable)
Crowell	United States	Record daily precipitation	64.8 mm (2.6 in)	40 of 100 (Notable)
Aldervale	Australia	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Busselton Shire	Australia	Record daily precipitation	33.3 mm (1.3 in)	37 of 100 (Notable)
Lafayette Rgnl AP	United States	Record daily precipitation	57.2 mm (2.3 in)	37 of 100 (Notable)
Ganca	Azerbaijan	Record high minimum temperature	15.9 C (60.6 F)	36 of 100 (Notable)
Walters	United States	Record daily precipitation	53.8 mm (2.1 in)	36 of 100 (Notable)
Tamenlong	India	Record daily precipitation	119.9 mm (4.7 in)	35 of 100 (Notable)
Cooperstown	United States	Record high minimum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Purcell 2 SW	United States	Record daily precipitation	77.7 mm (3.1 in)	35 of 100 (Notable)
Boyanup	Australia	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Balingup	Australia	Record daily precipitation	38.6 mm (1.5 in)	34 of 100 (Routine)
Mylor	Australia	Record daily precipitation	43.4 mm (1.7 in)	34 of 100 (Routine)
Kojonup	Australia	Record daily precipitation	26.7 mm (1.1 in)	34 of 100 (Routine)
Lilydale Post Office	Australia	Record daily precipitation	25.7 mm (1.0 in)	34 of 100 (Routine)
Musselboro (Applico)	Australia	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
Blackwell 1 W	United States	Record daily precipitation	41.7 mm (1.6 in)	34 of 100 (Routine)
Corsicana	United States	Record daily precipitation	80.0 mm (3.1 in)	34 of 100 (Routine)
Ibiapaba	Brazil	Record daily precipitation	77.0 mm (3.0 in)	33 of 100 (Routine)
Sanivarsanthe	India	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Searchlight	United States	Record daily precipitation	33.5 mm (1.3 in)	33 of 100 (Routine)
Toledo Blade	United States	Record high minimum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Karnes City 2N	United States	Record daily precipitation	69.9 mm (2.8 in)	33 of 100 (Routine)
Wills Pt	United States	Record daily precipitation	55.9 mm (2.2 in)	33 of 100 (Routine)
Brunswick Junction	Australia	Record daily precipitation	40.4 mm (1.6 in)	32 of 100 (Routine)
Dinninup	Australia	Record daily precipitation	34.8 mm (1.4 in)	32 of 100 (Routine)
Dum Dooma /Sookerating Aab	India	Record daily precipitation	68.1 mm (2.7 in)	32 of 100 (Routine)
Norwalk Wwtp	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Ponca City	United States	Record daily precipitation	50.5 mm (2.0 in)	32 of 100 (Routine)
Watonga	United States	Record daily precipitation	42.9 mm (1.7 in)	32 of 100 (Routine)
Kaufman 3 SE	United States	Record daily precipitation	68.1 mm (2.7 in)	32 of 100 (Routine)
Oakwood	Australia	Record daily precipitation	37.1 mm (1.5 in)	31 of 100 (Routine)
Ottawa Cda	Canada	Record high minimum temperature	12.8 C (55.0 F)	31 of 100 (Routine)
Angelica	United States	Record high minimum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Quanah 2 SW	United States	Record daily precipitation	63.2 mm (2.5 in)	31 of 100 (Routine)
Runge	United States	Record daily precipitation	57.9 mm (2.3 in)	31 of 100 (Routine)
Little Nerang Dam	Australia	Record daily precipitation	64.5 mm (2.5 in)	30 of 100 (Routine)
Mt Howitt	Australia	Record daily precipitation	26.7 mm (1.1 in)	30 of 100 (Routine)
South Springfield (South Sprin	Australia	Record daily precipitation	25.1 mm (1.0 in)	30 of 100 (Routine)
Bar Harbor 3 NW	United States	Record high maximum temperature	27.8 C (82.0 F)	30 of 100 (Routine)
Ralston	United States	Record daily precipitation	61.2 mm (2.4 in)	30 of 100 (Routine)
Shawnee	United States	Record daily precipitation	50.5 mm (2.0 in)	30 of 100 (Routine)
Jingalup	Australia	Record daily precipitation	26.4 mm (1.0 in)	29 of 100 (Routine)
Sao Benedito	Brazil	Record daily precipitation	150.0 mm (5.9 in)	29 of 100 (Routine)
Toronto Agincourt	Canada	Record high minimum temperature	15.0 C (59.0 F)	29 of 100 (Routine)
Imphal (C.Hosp)	India	Record daily precipitation	44.2 mm (1.7 in)	29 of 100 (Routine)
Marion 2 N	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Gardiner	United States	Record high maximum temperature	27.2 C (81.0 F)	29 of 100 (Routine)
McGill	United States	Record daily precipitation	25.9 mm (1.0 in)	29 of 100 (Routine)
Cape May 2 NW	United States	Record high maximum temperature	28.3 C (82.9 F)	29 of 100 (Routine)
Upper Sandusky	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)

Counts by Type and Timescale

824 records

Records set or tied on 21 April 1957 by type: Highest daily maximum 158, Lowest daily maximum 23, Highest daily minimum 301, Lowest daily minimum 19, Heaviest daily rainfall 317, Heaviest daily snowfall 5, Deepest snow cover 1.

Records on 21 April 1957 by type
Record type	Records
Highest daily maximum	158
Lowest daily maximum	23
Highest daily minimum	301
Lowest daily minimum	19
Heaviest daily rainfall	317
Heaviest daily snowfall	5
Deepest snow cover	1

Records on 21 April 1957 by timescale: all-time 1, monthly 26, daily 797.

How Much Records Were Beaten By

669 broken records

Margins by which the 669 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 75.2. Ties are not counted.

Top 20 by Significance

21 April 1957

Top 20 records on 21 April 1957 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1957	Fairbridge, AU	daily rain	54.6 mm (2.1 in)	43.2 mm (1.7 in)	27 years	51 of 100 (Notable)
21 April 1957	Chattanooga, US	daily rain	61.7 mm (2.4 in)	47.2 mm (1.9 in)	31 years	50 of 100 (Notable)
21 April 1957	Newkirk 5NE, US	daily rain	63.5 mm (2.5 in)	41.9 mm (1.6 in)	44 years	48 of 100 (Notable)
21 April 1957	Hamilton, CA	daily high min	15.0 C (59.0 F)	4.4 C (7.9 F)	90 years	46 of 100 (Notable)
21 April 1957	Cape Naturaliste, AU	daily rain	38.1 mm (1.5 in)	26.2 mm (1.0 in)	20 years	45 of 100 (Notable)
21 April 1957	Carlyle, US	daily rain	45.7 mm (1.8 in)	29.2 mm (1.1 in)	48 years	44 of 100 (Notable)
21 April 1957	Levy, US	daily rain	44.5 mm (1.8 in)	36.9 mm (1.5 in)	28 years	44 of 100 (Notable)
21 April 1957	Greenbushes, AU	daily rain	43.2 mm (1.7 in)	24.9 mm (1.0 in)	19 years	43 of 100 (Notable)
21 April 1957	Quindalup, AU	daily rain	57.4 mm (2.3 in)	40.6 mm (1.6 in)	20 years	43 of 100 (Notable)
21 April 1957	Frederick, US	daily rain	81.8 mm (3.2 in)	40.7 mm (1.6 in)	31 years	42 of 100 (Notable)
21 April 1957	Crowell, US	daily rain	64.8 mm (2.6 in)	55.7 mm (2.2 in)	4 years	40 of 100 (Notable)
21 April 1957	Aldervale, AU	daily rain	40.6 mm (1.6 in)	17.7 mm (0.7 in)	47 years	38 of 100 (Notable)
21 April 1957	Busselton Shire, AU	daily rain	33.3 mm (1.3 in)	22.1 mm (0.9 in)	19 years	37 of 100 (Notable)
21 April 1957	Lafayette Rgnl AP, US	daily rain	57.2 mm (2.3 in)	30.5 mm (1.2 in)	57 years	37 of 100 (Notable)
21 April 1957	Ganca, AZ	daily high min	15.9 C (60.6 F)	2.4 C (4.3 F)	74 years	36 of 100 (Notable)
21 April 1957	Walters, US	daily rain	53.8 mm (2.1 in)	34.7 mm (1.4 in)	28 years	36 of 100 (Notable)
21 April 1957	Tamenlong, IN	daily rain	119.9 mm (4.7 in)	75.2 mm (3.0 in)	8 years	35 of 100 (Notable)
21 April 1957	Cooperstown, US	daily high min	14.4 C (57.9 F)	5.5 C (9.9 F)	60 years	35 of 100 (Notable)
21 April 1957	Purcell 2 SW, US	daily rain	77.7 mm (3.1 in)	31.5 mm (1.2 in)	28 years	35 of 100 (Notable)
21 April 1957	Boyanup, AU	daily rain	47.0 mm (1.9 in)	17.5 mm (0.7 in)	27 years	34 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

1793 to 1957

Records set or tied on this calendar date in each year from 1793 to 1957. 1957 had 824 records.

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

Records on 04-21 in each year
Year	Records
1793	1
1814	1
1820	1
1838	1
1849	2
1851	1
1852	3
1854	1
1858	3
1861	2
1865	3
1866	1
1868	1
1870	1
1875	4
1876	2
1877	1
1879	3
1880	1
1881	1
1882	1
1884	1
1885	2
1888	1
1890	1
1891	1
1892	1
1893	2
1894	4
1895	1
1897	1
1898	2
1899	2
1900	7
1901	17
1902	7
1903	3
1904	10
1905	18
1906	5
1907	17
1908	25
1909	20
1910	33
1911	9
1912	22
1913	14
1914	220
1915	24
1916	64
1917	48
1918	84
1919	31
1920	85
1921	59
1922	70
1923	223
1924	119
1925	295
1926	148
1927	284
1928	269
1929	193
1930	127
1931	358
1932	304
1933	201
1934	497
1935	266
1936	277
1937	416
1938	295
1939	110
1940	462
1941	306
1942	285
1943	481
1944	261
1945	367
1946	448
1947	459
1948	365
1949	448
1950	529
1951	884
1952	665
1953	640
1954	527
1955	607
1956	497
1957	824
1958	329
1959	505
1960	889
1961	647
1962	319
1963	778
1964	1,125
1965	658
1966	756
1967	903
1968	655
1969	388
1970	728
1971	546
1972	593
1973	1,163
1974	528
1975	360
1976	452
1977	854
1978	735
1979	449
1980	1,934
1981	944
1982	1,075
1983	1,366
1984	1,231
1985	1,245
1986	977
1987	1,290
1988	898
1989	1,557
1990	1,463
1991	1,291
1992	1,763
1993	847
1994	859
1995	1,476
1996	788
1997	964
1998	876
1999	752
2000	921
2001	967
2002	1,312
2003	607
2004	586
2005	693
2006	761
2007	480
2008	1,327
2009	983
2010	805
2011	1,053
2012	687
2013	1,015
2014	393
2015	621
2016	587
2017	797
2018	862
2019	731
2020	397
2021	1,608
2022	433
2023	886
2024	754
2025	506
2026	853

Download the Data

Data for records on 1957-04-21: 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 2026-10-14 (14 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	549
10 to 20	61
20 to 30	31
30 to 40	14
40 to 50	8
50 to 60	4
60 to 70	1
70 to 80	1