Weather Records on 21 April 1955

607 weather records were set or tied worldwide on 21 April 1955. Highest significance: Uniontown 1 NE, US.

Key Facts for 21 April 1955

On 21 April 1955, 607 weather records were set or tied at long-record stations worldwide.
141 were record highs and 101 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 14 monthly and 592 daily.
Uniontown 1 NE set a daily record precipitation of 48.8 mm (1.9 in) on 21 April 1955.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

607 stations

607 station records on 21 April 1955 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1955: highest significance records shown on the map
Station	Country	Type	Value	Significance
Uniontown 1 NE	United States	Record daily precipitation	48.8 mm (1.9 in)	59 of 100 (Notable)
Chinnar	India	Record daily precipitation	50.8 mm (2.0 in)	54 of 100 (Notable)
Lodi	United States	Record daily precipitation	27.2 mm (1.1 in)	54 of 100 (Notable)
Barrage (Rwb)	South Africa	Record daily precipitation	54.5 mm (2.1 in)	53 of 100 (Notable)
Chatrapatti	India	Record daily precipitation	114.8 mm (4.5 in)	47 of 100 (Notable)
Cloverdale	United States	Record daily precipitation	46.0 mm (1.8 in)	45 of 100 (Notable)
Buckingham Downs	Australia	Record daily precipitation	32.3 mm (1.3 in)	43 of 100 (Notable)
Thiruthuraipoond	India	Record daily precipitation	69.1 mm (2.7 in)	43 of 100 (Notable)
North End	South Africa	Record daily precipitation	54.5 mm (2.1 in)	43 of 100 (Notable)
East Park Rsvr	United States	Record daily precipitation	30.5 mm (1.2 in)	42 of 100 (Notable)
Wrights	United States	Record daily precipitation	64.8 mm (2.6 in)	42 of 100 (Notable)
Ramanathapuram	India	Record daily precipitation	169.4 mm (6.7 in)	41 of 100 (Notable)
Senekal (Agr)	South Africa	Record daily precipitation	35.0 mm (1.4 in)	41 of 100 (Notable)
Dharapuram	India	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record high minimum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Tweespruit	South Africa	Record daily precipitation	44.7 mm (1.8 in)	39 of 100 (Notable)
Kentfield	United States	Record daily precipitation	50.3 mm (2.0 in)	39 of 100 (Notable)
Santa Cruz	United States	Record daily precipitation	47.5 mm (1.9 in)	39 of 100 (Notable)
Chinocup	Australia	Record daily precipitation	25.7 mm (1.0 in)	38 of 100 (Notable)
Covelong	India	Record daily precipitation	45.2 mm (1.8 in)	38 of 100 (Notable)
Koffiefontein (Pol)	South Africa	Record daily precipitation	26.0 mm (1.0 in)	38 of 100 (Notable)
Dudleys	United States	Record daily precipitation	47.5 mm (1.9 in)	37 of 100 (Notable)
Naduvattam	India	Record daily precipitation	88.1 mm (3.5 in)	36 of 100 (Notable)
Sheenspost	South Africa	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
De Sabla	United States	Record daily precipitation	71.6 mm (2.8 in)	36 of 100 (Notable)
Postmasburg	South Africa	Record daily precipitation	34.0 mm (1.3 in)	35 of 100 (Notable)
Udumalpet	India	Record daily precipitation	106.2 mm (4.2 in)	34 of 100 (Routine)
Ambasamudram	India	Record daily precipitation	56.4 mm (2.2 in)	33 of 100 (Routine)
Riva	Italy	Record low minimum temperature	3.0 C (37.4 F)	33 of 100 (Routine)
Sterkspruit	South Africa	Record daily precipitation	34.3 mm (1.4 in)	33 of 100 (Routine)
Georgetown	United States	Record daily precipitation	118.9 mm (4.7 in)	33 of 100 (Routine)
Los Gatos	United States	Record daily precipitation	36.6 mm (1.4 in)	33 of 100 (Routine)
McCloud	United States	Record daily precipitation	44.2 mm (1.7 in)	32 of 100 (Routine)
Bantwal	India	Record daily precipitation	43.2 mm (1.7 in)	31 of 100 (Routine)
Devikulam	India	Record daily precipitation	58.4 mm (2.3 in)	31 of 100 (Routine)
Pala	India	Record daily precipitation	74.9 mm (2.9 in)	31 of 100 (Routine)
Panruti	India	Record daily precipitation	58.4 mm (2.3 in)	30 of 100 (Routine)
Drevja	Norway	Record snow depth	127.0 cm (50.0 in)	30 of 100 (Routine)
The Cliff	South Africa	Record daily precipitation	26.0 mm (1.0 in)	30 of 100 (Routine)
Grass Valley	United States	Record daily precipitation	27.4 mm (1.1 in)	30 of 100 (Routine)
Tirupoondi	India	Record daily precipitation	41.9 mm (1.6 in)	29 of 100 (Routine)
Elandsheuwel	South Africa	Record daily precipitation	25.0 mm (1.0 in)	29 of 100 (Routine)
Big Sur STN	United States	Record daily precipitation	34.5 mm (1.4 in)	29 of 100 (Routine)
Lodi	United States	Record low maximum temperature	12.8 C (55.0 F)	29 of 100 (Routine)
Munnar	India	Record daily precipitation	59.7 mm (2.4 in)	28 of 100 (Routine)
Saidapet	India	Record daily precipitation	35.1 mm (1.4 in)	28 of 100 (Routine)
Musiri	India	Record daily precipitation	43.2 mm (1.7 in)	28 of 100 (Routine)
Oranjeville (Skl)	South Africa	Record daily precipitation	34.0 mm (1.3 in)	28 of 100 (Routine)
Jonesboro 3 SSE	United States	Record daily precipitation	63.0 mm (2.5 in)	28 of 100 (Routine)
Healdsburg	United States	Record daily precipitation	49.0 mm (1.9 in)	28 of 100 (Routine)
Bowling Green Wwtp	United States	Record high minimum temperature	12.2 C (54.0 F)	28 of 100 (Routine)
Idomia	South Africa	Record daily precipitation	30.0 mm (1.2 in)	27 of 100 (Routine)
Orland	United States	Record low maximum temperature	11.1 C (52.0 F)	27 of 100 (Routine)
Santa Rosa	United States	Record low maximum temperature	11.7 C (53.1 F)	27 of 100 (Routine)
Corvallis State UNIV	United States	Record low maximum temperature	8.3 C (46.9 F)	27 of 100 (Routine)
Morekulam	India	Record daily precipitation	127.5 mm (5.0 in)	26 of 100 (Routine)
Potchefstroom	South Africa	Record daily precipitation	47.5 mm (1.9 in)	26 of 100 (Routine)
San Jacinto	United States	Record low minimum temperature	-0.6 C (30.9 F)	26 of 100 (Routine)
Vacaville	United States	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Cambridge City 3 N	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)

Counts by Type and Timescale

607 records

Records set or tied on 21 April 1955 by type: Highest daily maximum 57, Lowest daily maximum 73, Highest daily minimum 84, Lowest daily minimum 28, Heaviest daily rainfall 357, Heaviest daily snowfall 3, Deepest snow cover 5.

Records on 21 April 1955 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	73
Highest daily minimum	84
Lowest daily minimum	28
Heaviest daily rainfall	357
Heaviest daily snowfall	3
Deepest snow cover	5

Records on 21 April 1955 by timescale: all-time 1, monthly 14, daily 592.

How Much Records Were Beaten By

520 broken records

Margins by which the 520 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 330.0. Ties are not counted.

Top 20 by Significance

21 April 1955

Top 20 records on 21 April 1955 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1955	Uniontown 1 NE, US	daily rain	48.8 mm (1.9 in)	31.8 mm (1.3 in)	45 years	59 of 100 (Notable)
21 April 1955	Chinnar, IN	daily rain	50.8 mm (2.0 in)	35.1 mm (1.4 in)	36 years	54 of 100 (Notable)
21 April 1955	Lodi, US	daily rain	27.2 mm (1.1 in)	22.1 mm (0.9 in)	58 years	54 of 100 (Notable)
21 April 1955	Barrage (Rwb), ZA	daily rain	54.5 mm (2.1 in)	43.1 mm (1.7 in)	32 years	53 of 100 (Notable)
21 April 1955	Chatrapatti, IN	daily rain	114.8 mm (4.5 in)	76.2 mm (3.0 in)	8 years	47 of 100 (Notable)
21 April 1955	Cloverdale, US	daily rain	46.0 mm (1.8 in)	40.9 mm (1.6 in)	25 years	45 of 100 (Notable)
21 April 1955	Buckingham Downs, AU	daily rain	32.3 mm (1.3 in)	29.8 mm (1.2 in)	34 years	43 of 100 (Notable)
21 April 1955	Thiruthuraipoond, IN	daily rain	69.1 mm (2.7 in)	52.8 mm (2.1 in)	38 years	43 of 100 (Notable)
21 April 1955	North End, ZA	daily rain	54.5 mm (2.1 in)	40.8 mm (1.6 in)	36 years	43 of 100 (Notable)
21 April 1955	East Park Rsvr, US	daily rain	30.5 mm (1.2 in)	29.0 mm (1.1 in)	10 years	42 of 100 (Notable)
21 April 1955	Wrights, US	daily rain	64.8 mm (2.6 in)	49.3 mm (1.9 in)	40 years	42 of 100 (Notable)
21 April 1955	Ramanathapuram, IN	monthly rain	169.4 mm (6.7 in)	38.6 mm (1.5 in)	27 years	41 of 100 (Notable)
21 April 1955	Senekal (Agr), ZA	daily rain	35.0 mm (1.4 in)	24.1 mm (0.9 in)	36 years	41 of 100 (Notable)
21 April 1955	Dharapuram, IN	daily rain	63.5 mm (2.5 in)	47.0 mm (1.9 in)	12 years	39 of 100 (Notable)
21 April 1955	Manati 2 E, PR	daily high min	25.0 C (77.0 F)	2.8 C (5.0 F)	52 years	39 of 100 (Notable)
21 April 1955	Tweespruit, ZA	daily rain	44.7 mm (1.8 in)	27.9 mm (1.1 in)	32 years	39 of 100 (Notable)
21 April 1955	Kentfield, US	daily rain	50.3 mm (2.0 in)	37.6 mm (1.5 in)	49 years	39 of 100 (Notable)
21 April 1955	Santa Cruz, US	daily rain	47.5 mm (1.9 in)	38.1 mm (1.5 in)	6 years	39 of 100 (Notable)
21 April 1955	Chinocup, AU	daily rain	25.7 mm (1.0 in)	20.4 mm (0.8 in)	16 years	38 of 100 (Notable)
21 April 1955	Covelong, IN	daily rain	45.2 mm (1.8 in)	37.3 mm (1.5 in)	22 years	38 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

1793 to 1955

Records set or tied on this calendar date in each year from 1793 to 1955. 1955 had 607 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 1955-04-21: 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 50	514
50 to 100	3
100 to 150	2
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	1