Weather Records on 21 April 1958

329 weather records were set or tied worldwide on 21 April 1958. Highest significance: Nagarcoil, IN.

Key Facts for 21 April 1958

On 21 April 1958, 329 weather records were set or tied at long-record stations worldwide.
134 were record highs and 26 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 319 daily.
Nagarcoil set a daily record precipitation of 78.7 mm (3.1 in) on 21 April 1958.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

329 stations

329 station records on 21 April 1958 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1958: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nagarcoil	India	Record daily precipitation	78.7 mm (3.1 in)	55 of 100 (Notable)
Ayikudi	India	Record daily precipitation	49.5 mm (1.9 in)	41 of 100 (Notable)
Denkanikottah	India	Record daily precipitation	89.1 mm (3.5 in)	38 of 100 (Notable)
Dharmapuri	India	Record daily precipitation	83.8 mm (3.3 in)	38 of 100 (Notable)
Ko253Lpatti Sr	India	Record daily precipitation	78.0 mm (3.1 in)	37 of 100 (Notable)
Dasna	India	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Kadayanallur	India	Record daily precipitation	50.8 mm (2.0 in)	36 of 100 (Notable)
Prentice #2	United States	Record daily precipitation	45.7 mm (1.8 in)	36 of 100 (Notable)
Binghamton Wb City	United States	Record daily precipitation	40.9 mm (1.6 in)	36 of 100 (Notable)
Pulivendla	India	Record daily precipitation	25.8 mm (1.0 in)	34 of 100 (Routine)
Thadikarekonam	India	Record daily precipitation	63.5 mm (2.5 in)	34 of 100 (Routine)
Kayatnur	India	Record daily precipitation	48.3 mm (1.9 in)	33 of 100 (Routine)
Paramathi	India	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Vajda-Guba	Russia	Record low minimum temperature	-14.0 C (6.8 F)	32 of 100 (Routine)
San Luis Obispo Poly	United States	Record high minimum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Jackson	United States	Record daily precipitation	37.3 mm (1.5 in)	32 of 100 (Routine)
Mc Minnville	United States	Record daily precipitation	37.3 mm (1.5 in)	32 of 100 (Routine)
Lyndon	Canada	Record daily snowfall	38.9 cm (15.3 in)	31 of 100 (Routine)
Kalghatgi	India	Record daily precipitation	76.2 mm (3.0 in)	31 of 100 (Routine)
San Fernando	United States	Record high minimum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
Hosur	India	Record daily precipitation	57.4 mm (2.3 in)	30 of 100 (Routine)
Santa Paula	United States	Record high minimum temperature	17.8 C (64.0 F)	30 of 100 (Routine)
Kallatty	India	Record daily precipitation	48.3 mm (1.9 in)	29 of 100 (Routine)
Santa Barbara	United States	Record high maximum temperature	34.4 C (93.9 F)	29 of 100 (Routine)
Voravakal(Varaka)	India	Record daily precipitation	25.4 mm (1.0 in)	28 of 100 (Routine)
Baltimore Customs House	United States	Record high minimum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Mukteshwar Kumaon	India	Record daily precipitation	25.1 mm (1.0 in)	27 of 100 (Routine)
Ironton	United States	Record daily precipitation	29.2 mm (1.1 in)	27 of 100 (Routine)
Bagepalli	India	Record daily precipitation	43.9 mm (1.7 in)	26 of 100 (Routine)
Kottaram	India	Record daily precipitation	43.2 mm (1.7 in)	26 of 100 (Routine)
Redlands	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Milford 2 SE	United States	Record high minimum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Trenton 2	United States	Record high minimum temperature	15.6 C (60.1 F)	26 of 100 (Routine)
Lyndon	Canada	Record daily precipitation	39.4 mm (1.6 in)	25 of 100 (Routine)
Seetapal	India	Record daily precipitation	48.3 mm (1.9 in)	25 of 100 (Routine)
Decatur	United States	Record daily precipitation	45.7 mm (1.8 in)	25 of 100 (Routine)
Chula Vista	United States	Record high maximum temperature	23.9 C (75.0 F)	25 of 100 (Routine)
San Pedro	United States	Record high minimum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Coleman 3 WNW	United States	Record high minimum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
Woodstock	United States	Record high minimum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Allardt	United States	Record daily precipitation	47.2 mm (1.9 in)	25 of 100 (Routine)
Puthendam	India	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Ostrov Sosnovez	Russia	Record low minimum temperature	-20.2 C (-4.4 F)	24 of 100 (Routine)
Petropavlovsk-Kamchatskij	Russia	Record high maximum temperature	7.1 C (44.8 F)	24 of 100 (Routine)
Mansfield 5 W	United States	Record daily precipitation	33.3 mm (1.3 in)	24 of 100 (Routine)
Parker	United States	Record high maximum temperature	40.6 C (105.1 F)	23 of 100 (Routine)
Newport Beach Harbor	United States	Record high maximum temperature	23.9 C (75.0 F)	23 of 100 (Routine)
Santa Maria	United States	Record high maximum temperature	34.4 C (93.9 F)	23 of 100 (Routine)
Ewa Plantation 741	United States	Record low minimum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Theethandathanam	India	Record daily precipitation	39.1 mm (1.5 in)	22 of 100 (Routine)
Paca-Ata	Kyrgyzstan	Record daily precipitation	28.5 mm (1.1 in)	22 of 100 (Routine)
Teriberka	Russia	Record low minimum temperature	-16.5 C (2.3 F)	22 of 100 (Routine)
Oxnard	United States	Record high maximum temperature	30.6 C (87.1 F)	22 of 100 (Routine)
Redlands	United States	Record high maximum temperature	35.6 C (96.1 F)	22 of 100 (Routine)
Santa Paula	United States	Record high maximum temperature	38.9 C (102.0 F)	22 of 100 (Routine)
Russellville	United States	Record daily precipitation	35.8 mm (1.4 in)	22 of 100 (Routine)
Mana 1026	United States	Record low maximum temperature	23.3 C (73.9 F)	22 of 100 (Routine)
Baldonnel	Canada	Record daily snowfall	10.2 cm (4.0 in)	21 of 100 (Routine)
Kulasekaram	India	Record daily precipitation	44.5 mm (1.8 in)	21 of 100 (Routine)
Long Beach Pub Svc	United States	Record high maximum temperature	31.1 C (88.0 F)	21 of 100 (Routine)

Counts by Type and Timescale

329 records

Records set or tied on 21 April 1958 by type: Highest daily maximum 45, Lowest daily maximum 12, Highest daily minimum 89, Lowest daily minimum 14, Heaviest daily rainfall 151, Heaviest daily snowfall 18.

Records on 21 April 1958 by type
Record type	Records
Highest daily maximum	45
Lowest daily maximum	12
Highest daily minimum	89
Lowest daily minimum	14
Heaviest daily rainfall	151
Heaviest daily snowfall	18
Deepest snow cover	0

Records on 21 April 1958 by timescale: all-time 0, monthly 10, daily 319.

How Much Records Were Beaten By

280 broken records

Margins by which the 280 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 84.0. Ties are not counted.

Top 20 by Significance

21 April 1958

Top 20 records on 21 April 1958 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1958	Nagarcoil, IN	daily rain	78.7 mm (3.1 in)	66.0 mm (2.6 in)	35 years	55 of 100 (Notable)
21 April 1958	Ayikudi, IN	daily rain	49.5 mm (1.9 in)	34.3 mm (1.4 in)	37 years	41 of 100 (Notable)
21 April 1958	Denkanikottah, IN	daily rain	89.1 mm (3.5 in)	42.9 mm (1.7 in)	24 years	38 of 100 (Notable)
21 April 1958	Dharmapuri, IN	monthly rain	83.8 mm (3.3 in)	19.8 mm (0.8 in)	28 years	38 of 100 (Notable)
21 April 1958	Ko253Lpatti Sr, IN	daily rain	78.0 mm (3.1 in)	50.6 mm (2.0 in)	7 years	37 of 100 (Notable)
21 April 1958	Dasna, IN	daily rain	25.4 mm (1.0 in)	25.4 mm (1.0 in)	32 years	37 of 100 (Notable)
21 April 1958	Kadayanallur, IN	daily rain	50.8 mm (2.0 in)	36.1 mm (1.4 in)	37 years	36 of 100 (Notable)
21 April 1958	Prentice #2, US	daily rain	45.7 mm (1.8 in)	15.2 mm (0.6 in)	41 years	36 of 100 (Notable)
21 April 1958	Binghamton Wb City, US	daily rain	40.9 mm (1.6 in)	14.7 mm (0.6 in)	29 years	36 of 100 (Notable)
21 April 1958	Pulivendla, IN	daily rain	25.8 mm (1.0 in)	23.8 mm (0.9 in)	39 years	34 of 100 (Routine)
21 April 1958	Thadikarekonam, IN	daily rain	63.5 mm (2.5 in)	38.1 mm (1.5 in)	28 years	34 of 100 (Routine)
21 April 1958	Kayatnur, IN	daily rain	48.3 mm (1.9 in)	26.2 mm (1.0 in)	37 years	33 of 100 (Routine)
21 April 1958	Paramathi, IN	daily rain	38.1 mm (1.5 in)	21.6 mm (0.9 in)	49 years	32 of 100 (Routine)
21 April 1958	Vajda-Guba, RU	daily low min	-14.0 C (6.8 F)	3.5 C (6.3 F)	62 years	32 of 100 (Routine)
21 April 1958	San Luis Obispo Poly, US	daily high min	18.9 C (66.0 F)	6.7 C (12.1 F)	8 years	32 of 100 (Routine)
21 April 1958	Jackson, US	daily rain	37.3 mm (1.5 in)	25.1 mm (1.0 in)	11 years	32 of 100 (Routine)
21 April 1958	Mc Minnville, US	daily rain	37.3 mm (1.5 in)	10.6 mm (0.4 in)	61 years	32 of 100 (Routine)
21 April 1958	Lyndon, CA	monthly snowfall	38.9 cm (15.3 in)	1.8 cm (0.7 in)	47 years	31 of 100 (Routine)
21 April 1958	Kalghatgi, IN	monthly rain	76.2 mm (3.0 in)	17.3 mm (0.7 in)	5 years	31 of 100 (Routine)
21 April 1958	San Fernando, US	monthly high min	25.6 C (78.1 F)	5.0 C (9.0 F)	11 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

1793 to 1958

Records set or tied on this calendar date in each year from 1793 to 1958. 1958 had 329 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 1958-04-21: 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 20	251
20 to 40	21
40 to 60	5
60 to 80	2
80 to 100	1