Weather Records on 21 April 1948

365 weather records were set or tied worldwide on 21 April 1948. Highest significance: Bongaon, IN.

Key Facts for 21 April 1948

On 21 April 1948, 365 weather records were set or tied at long-record stations worldwide.
144 were record highs and 28 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 356 daily.
Bongaon set a monthly record daily precipitation of 147.1 mm (5.8 in) on 21 April 1948.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

365 stations

365 station records on 21 April 1948 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bongaon	India	Record daily precipitation	147.1 mm (5.8 in)	64 of 100 (Major)
Alice Downs	Australia	Record daily precipitation	46.2 mm (1.8 in)	56 of 100 (Notable)
Dergholm (Hillgrove)	Australia	Record daily precipitation	51.3 mm (2.0 in)	51 of 100 (Notable)
Armagh	United Kingdom	Record daily precipitation	26.4 mm (1.0 in)	48 of 100 (Notable)
Leonora	Australia	Record daily precipitation	52.1 mm (2.1 in)	47 of 100 (Notable)
Sivagiri	India	Record daily precipitation	79.2 mm (3.1 in)	43 of 100 (Notable)
Marseille Obs. Palais-Lonchamp	France	Record daily precipitation	43.1 mm (1.7 in)	42 of 100 (Notable)
Iguape	Brazil	Record daily precipitation	87.3 mm (3.4 in)	40 of 100 (Notable)
Kachugaon	India	Record daily precipitation	142.7 mm (5.6 in)	39 of 100 (Notable)
P.P. Channel	India	Record daily precipitation	83.8 mm (3.3 in)	37 of 100 (Notable)
Hughenden	South Africa	Record daily precipitation	38.1 mm (1.5 in)	36 of 100 (Notable)
Uccle	Belgium	Record high maximum temperature	26.4 C (79.5 F)	35 of 100 (Notable)
Kottarakara	India	Record daily precipitation	57.2 mm (2.3 in)	35 of 100 (Notable)
De Rust (Pol)	South Africa	Record daily precipitation	30.7 mm (1.2 in)	34 of 100 (Routine)
Oranje	South Africa	Record daily precipitation	33.3 mm (1.3 in)	34 of 100 (Routine)
Napier Downs	Australia	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
Durango	United States	Record high minimum temperature	8.3 C (46.9 F)	33 of 100 (Routine)
Port Campbell Post Office	Australia	Record daily precipitation	30.2 mm (1.2 in)	31 of 100 (Routine)
Karikode	India	Record daily precipitation	55.9 mm (2.2 in)	31 of 100 (Routine)
Karlsruhe	Germany	Record high maximum temperature	26.4 C (79.5 F)	30 of 100 (Routine)
Amchong(Sonepur)	India	Record daily precipitation	58.9 mm (2.3 in)	30 of 100 (Routine)
Poortjie-Wes	South Africa	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Chico UNIV Farm	United States	Record low maximum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Hatch	United States	Record high minimum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Biesjesfontein	South Africa	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Ft Ross	United States	Record daily precipitation	30.5 mm (1.2 in)	29 of 100 (Routine)
Casterton (Warrock)	Australia	Record daily precipitation	26.2 mm (1.0 in)	27 of 100 (Routine)
Attarikhat	India	Record daily precipitation	66.3 mm (2.6 in)	27 of 100 (Routine)
Regensburg	Germany	Record high maximum temperature	22.8 C (73.0 F)	26 of 100 (Routine)
Wilton	India	Record daily precipitation	85.1 mm (3.4 in)	26 of 100 (Routine)
Nashua 2 NNW	United States	Record high minimum temperature	11.7 C (53.1 F)	26 of 100 (Routine)
Deming	United States	Record high minimum temperature	17.8 C (64.0 F)	26 of 100 (Routine)
Nordby (Fano)	Denmark	Record high maximum temperature	19.5 C (67.1 F)	25 of 100 (Routine)
Bremen-Seefahrtschule	Germany	Record high maximum temperature	25.7 C (78.3 F)	25 of 100 (Routine)
Kerkeriya	India	Record daily precipitation	56.9 mm (2.2 in)	25 of 100 (Routine)
Aberdeen (Tnk)	South Africa	Record daily precipitation	29.0 mm (1.1 in)	25 of 100 (Routine)
Oroville 1 N	United States	Record low maximum temperature	12.2 C (54.0 F)	25 of 100 (Routine)
Dinhata	India	Record daily precipitation	48.3 mm (1.9 in)	24 of 100 (Routine)
Atlanta 1 E	United States	Record high minimum temperature	3.9 C (39.0 F)	24 of 100 (Routine)
Altastenberg	Germany	Record high minimum temperature	9.9 C (49.8 F)	23 of 100 (Routine)
De Smet	United States	Record high minimum temperature	16.7 C (62.1 F)	23 of 100 (Routine)
Cordova AP	United States	Record low minimum temperature	-8.3 C (17.1 F)	23 of 100 (Routine)
Schwerin	Germany	Record high maximum temperature	23.2 C (73.8 F)	22 of 100 (Routine)
Nogales	United States	Record high minimum temperature	16.7 C (62.1 F)	22 of 100 (Routine)
Vacaville	United States	Record low maximum temperature	13.3 C (55.9 F)	22 of 100 (Routine)
Glenwood Spgs #2	United States	Record high minimum temperature	7.8 C (46.0 F)	22 of 100 (Routine)
Newton	United States	Record high minimum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Aztec Ruins Nm	United States	Record high minimum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Monroe 2 SE	United States	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Minara	Australia	Record daily precipitation	32.3 mm (1.3 in)	21 of 100 (Routine)
Potsdam	Germany	Record high maximum temperature	25.5 C (77.9 F)	21 of 100 (Routine)
Clausthal-Zellerfeld	Germany	Record high minimum temperature	8.6 C (47.5 F)	21 of 100 (Routine)
Tenkasi	India	Record daily precipitation	36.3 mm (1.4 in)	21 of 100 (Routine)
Mongpoo	India	Record daily precipitation	43.4 mm (1.7 in)	21 of 100 (Routine)
West Souburg	Netherlands	Record high minimum temperature	10.8 C (51.4 F)	21 of 100 (Routine)
Marysville	United States	Record low maximum temperature	12.8 C (55.0 F)	21 of 100 (Routine)
Represa	United States	Record low maximum temperature	14.4 C (57.9 F)	21 of 100 (Routine)
Flora Valley Old	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Mogoca	Russia	Record daily precipitation	13.9 mm (0.5 in)	20 of 100 (Routine)
Murraysburg (Pol)	South Africa	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)

Counts by Type and Timescale

365 records

Records set or tied on 21 April 1948 by type: Highest daily maximum 66, Lowest daily maximum 24, Highest daily minimum 78, Lowest daily minimum 4, Heaviest daily rainfall 192, Deepest snow cover 1.

Records on 21 April 1948 by type
Record type	Records
Highest daily maximum	66
Lowest daily maximum	24
Highest daily minimum	78
Lowest daily minimum	4
Heaviest daily rainfall	192
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 21 April 1948 by timescale: all-time 0, monthly 9, daily 356.

How Much Records Were Beaten By

315 broken records

Margins by which the 315 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 850.0. Ties are not counted.

Top 20 by Significance

21 April 1948

Top 20 records on 21 April 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1948	Bongaon, IN	monthly rain	147.1 mm (5.8 in)	59.2 mm (2.3 in)	39 years	64 of 100 (Major)
21 April 1948	Alice Downs, AU	daily rain	46.2 mm (1.8 in)	41.4 mm (1.6 in)	40 years	56 of 100 (Notable)
21 April 1948	Dergholm (Hillgrove), AU	daily rain	51.3 mm (2.0 in)	31.0 mm (1.2 in)	23 years	51 of 100 (Notable)
21 April 1948	Armagh, GB	daily rain	26.4 mm (1.0 in)	10.7 mm (0.4 in)	36 years	48 of 100 (Notable)
21 April 1948	Leonora, AU	daily rain	52.1 mm (2.1 in)	41.9 mm (1.6 in)	7 years	47 of 100 (Notable)
21 April 1948	Sivagiri, IN	daily rain	79.2 mm (3.1 in)	58.6 mm (2.3 in)	5 years	43 of 100 (Notable)
21 April 1948	Marseille Obs. Palais-Lonchamp, FR	daily rain	43.1 mm (1.7 in)	26.6 mm (1.0 in)	25 years	42 of 100 (Notable)
21 April 1948	Iguape, BR	daily rain	87.3 mm (3.4 in)	36.8 mm (1.4 in)	31 years	40 of 100 (Notable)
21 April 1948	Kachugaon, IN	daily rain	142.7 mm (5.6 in)	61.4 mm (2.4 in)	23 years	39 of 100 (Notable)
21 April 1948	P.P. Channel, IN	daily rain	83.8 mm (3.3 in)	66.0 mm (2.6 in)	3 years	37 of 100 (Notable)
21 April 1948	Hughenden, ZA	daily rain	38.1 mm (1.5 in)	21.3 mm (0.8 in)	29 years	36 of 100 (Notable)
21 April 1948	Uccle, BE	daily high max	26.4 C (79.5 F)	1.2 C (2.2 F)	77 years	35 of 100 (Notable)
21 April 1948	Kottarakara, IN	daily rain	57.2 mm (2.3 in)	34.6 mm (1.4 in)	33 years	35 of 100 (Notable)
21 April 1948	De Rust (Pol), ZA	daily rain	30.7 mm (1.2 in)	17.0 mm (0.7 in)	27 years	34 of 100 (Routine)
21 April 1948	Oranje, ZA	daily rain	33.3 mm (1.3 in)	21.9 mm (0.9 in)	29 years	34 of 100 (Routine)
21 April 1948	Napier Downs, AU	daily rain	40.6 mm (1.6 in)	40.6 mm (1.6 in)	35 years	33 of 100 (Routine)
21 April 1948	Durango, US	monthly high min	8.3 C (46.9 F)	1.1 C (2.0 F)	52 years	33 of 100 (Routine)
21 April 1948	Port Campbell Post Office, AU	daily rain	30.2 mm (1.2 in)	7.1 mm (0.28 in)	55 years	31 of 100 (Routine)
21 April 1948	Karikode, IN	daily rain	55.9 mm (2.2 in)	34.3 mm (1.4 in)	27 years	31 of 100 (Routine)
21 April 1948	Karlsruhe, DE	daily high max	26.4 C (79.5 F)	2.4 C (4.3 F)	62 years	30 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 1948

Records set or tied on this calendar date in each year from 1793 to 1948. 1948 had 365 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 1948-04-21: 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 200	314
200 to 400	0
400 to 600	0
600 to 800	0
800 to 1000	1