Weather Records on 21 August 1948

305 weather records were set or tied worldwide on 21 August 1948. Highest significance: Dataganj, IN.

Key Facts for 21 August 1948

On 21 August 1948, 305 weather records were set or tied at long-record stations worldwide.
73 were record highs and 56 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 301 daily.
Dataganj set a daily record precipitation of 120.9 mm (4.8 in) on 21 August 1948.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 451 records.

Record Map

305 stations

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

Weather records on 21 August 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dataganj	India	Record daily precipitation	120.9 mm (4.8 in)	51 of 100 (Notable)
New Brunswick Exp STN	United States	Record daily precipitation	78.7 mm (3.1 in)	46 of 100 (Notable)
Lilydale	Australia	Record daily precipitation	28.7 mm (1.1 in)	43 of 100 (Notable)
Boonton 1 SE	United States	Record daily precipitation	51.8 mm (2.0 in)	43 of 100 (Notable)
Gangapur	India	Record daily precipitation	101.6 mm (4.0 in)	41 of 100 (Notable)
Clearbrook	United States	Record daily precipitation	38.4 mm (1.5 in)	41 of 100 (Notable)
Tilhar	India	Record daily precipitation	110.5 mm (4.4 in)	40 of 100 (Notable)
Chatham	United States	Record daily precipitation	50.5 mm (2.0 in)	39 of 100 (Notable)
Blaine	United States	Record daily precipitation	28.2 mm (1.1 in)	39 of 100 (Notable)
Kalpi	India	Record daily precipitation	81.5 mm (3.2 in)	36 of 100 (Notable)
Dunderlandsdalen	Norway	Record daily precipitation	27.1 mm (1.1 in)	36 of 100 (Notable)
Aonla	India	Record daily precipitation	114.3 mm (4.5 in)	35 of 100 (Notable)
Khannah	India	Record daily precipitation	99.8 mm (3.9 in)	35 of 100 (Notable)
Digri	India	Record daily precipitation	93.7 mm (3.7 in)	34 of 100 (Routine)
Rewari	India	Record daily precipitation	114.3 mm (4.5 in)	33 of 100 (Routine)
Midnapore	India	Record daily precipitation	88.6 mm (3.5 in)	31 of 100 (Routine)
Saint John	Canada	Record high maximum temperature	28.3 C (82.9 F)	29 of 100 (Routine)
Verhojansk	Russia	Record high minimum temperature	15.8 C (60.4 F)	29 of 100 (Routine)
Huntsville	United States	Record high maximum temperature	40.6 C (105.1 F)	29 of 100 (Routine)
New Westminster	Canada	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Kharsawan	India	Record daily precipitation	82.6 mm (3.3 in)	28 of 100 (Routine)
Willcox	United States	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Decorah	United States	Record high minimum temperature	25.6 C (78.1 F)	27 of 100 (Routine)
Chachora	India	Record daily precipitation	163.8 mm (6.4 in)	26 of 100 (Routine)
Glomfjord	Norway	Record daily precipitation	42.1 mm (1.7 in)	26 of 100 (Routine)
Sharon Springs 2 SW	United States	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Doylestown	United States	Record daily precipitation	41.7 mm (1.6 in)	26 of 100 (Routine)
Gatesville	United States	Record high maximum temperature	43.3 C (109.9 F)	26 of 100 (Routine)
Kodiak	United States	Record high maximum temperature	27.2 C (81.0 F)	26 of 100 (Routine)
Feodosiia	Ukraine	Record high minimum temperature	23.8 C (74.8 F)	25 of 100 (Routine)
Fitzgerald	United States	Record high minimum temperature	24.4 C (75.9 F)	25 of 100 (Routine)
Burketown Post Office	Australia	Record low minimum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Henrietta	United States	Record high maximum temperature	45.6 C (114.1 F)	24 of 100 (Routine)
Waxahachie	United States	Record high maximum temperature	44.4 C (111.9 F)	24 of 100 (Routine)
Zugspitze	Germany	Record snow depth	200.0 cm (78.7 in)	23 of 100 (Routine)
Machilpur	India	Record daily precipitation	58.9 mm (2.3 in)	23 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record high minimum temperature	18.8 C (65.8 F)	23 of 100 (Routine)
Coupeville 1 S	United States	Record low maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Chirawa	India	Record daily precipitation	90.2 mm (3.6 in)	22 of 100 (Routine)
Angleton 2 W	United States	Record high maximum temperature	37.8 C (100.0 F)	22 of 100 (Routine)
Frogmore	Australia	Record daily precipitation	32.0 mm (1.3 in)	21 of 100 (Routine)
Mamanguape	Brazil	Record daily precipitation	28.1 mm (1.1 in)	21 of 100 (Routine)
Danevang 1 W	United States	Record high maximum temperature	38.3 C (100.9 F)	21 of 100 (Routine)
Flemington Racecourse	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
American River	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Cle Elum	United States	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Toorak	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Marietta 3 NNW	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Melbourne Regional Office	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Branxton Post Office	Australia	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Eltham	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Steigen	Norway	Record daily precipitation	24.2 mm (1.0 in)	20 of 100 (Routine)
Killarney Post Office	Australia	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Garfield	Australia	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Agassiz Cda	Canada	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Maya	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Saltspring Island	Canada	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Trinidad 2 SSE	United States	Record daily precipitation	1.5 mm (0.06 in)	20 of 100 (Routine)
Hawthorn	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)

Counts by Type and Timescale

305 records

Records set or tied on 21 August 1948 by type: Highest daily maximum 47, Lowest daily maximum 33, Highest daily minimum 26, Lowest daily minimum 23, Heaviest daily rainfall 175, Deepest snow cover 1.

Records on 21 August 1948 by type
Record type	Records
Highest daily maximum	47
Lowest daily maximum	33
Highest daily minimum	26
Lowest daily minimum	23
Heaviest daily rainfall	175
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 21 August 1948 by timescale: all-time 0, monthly 4, daily 301.

How Much Records Were Beaten By

244 broken records

Margins by which the 244 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 550.0. Ties are not counted.

Top 20 by Significance

21 August 1948

Top 20 records on 21 August 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1948	Dataganj, IN	daily rain	120.9 mm (4.8 in)	79.5 mm (3.1 in)	37 years	51 of 100 (Notable)
21 August 1948	New Brunswick Exp STN, US	daily rain	78.7 mm (3.1 in)	50.8 mm (2.0 in)	47 years	46 of 100 (Notable)
21 August 1948	Lilydale, AU	daily rain	28.7 mm (1.1 in)	14.7 mm (0.6 in)	43 years	43 of 100 (Notable)
21 August 1948	Boonton 1 SE, US	daily rain	51.8 mm (2.0 in)	38.6 mm (1.5 in)	48 years	43 of 100 (Notable)
21 August 1948	Gangapur, IN	daily rain	101.6 mm (4.0 in)	66.5 mm (2.6 in)	32 years	41 of 100 (Notable)
21 August 1948	Clearbrook, US	daily rain	38.4 mm (1.5 in)	32.6 mm (1.3 in)	5 years	41 of 100 (Notable)
21 August 1948	Tilhar, IN	daily rain	110.5 mm (4.4 in)	54.9 mm (2.2 in)	44 years	40 of 100 (Notable)
21 August 1948	Chatham, US	daily rain	50.5 mm (2.0 in)	35.3 mm (1.4 in)	44 years	39 of 100 (Notable)
21 August 1948	Blaine, US	daily rain	28.2 mm (1.1 in)	23.1 mm (0.9 in)	5 years	39 of 100 (Notable)
21 August 1948	Kalpi, IN	daily rain	81.5 mm (3.2 in)	53.1 mm (2.1 in)	41 years	36 of 100 (Notable)
21 August 1948	Dunderlandsdalen, NO	daily rain	27.1 mm (1.1 in)	13.3 mm (0.5 in)	30 years	36 of 100 (Notable)
21 August 1948	Aonla, IN	daily rain	114.3 mm (4.5 in)	55.9 mm (2.2 in)	26 years	35 of 100 (Notable)
21 August 1948	Khannah, IN	daily rain	99.8 mm (3.9 in)	53.6 mm (2.1 in)	30 years	35 of 100 (Notable)
21 August 1948	Digri, IN	daily rain	93.7 mm (3.7 in)	48.0 mm (1.9 in)	44 years	34 of 100 (Routine)
21 August 1948	Rewari, IN	monthly rain	114.3 mm (4.5 in)	29.0 mm (1.1 in)	6 years	33 of 100 (Routine)
21 August 1948	Midnapore, IN	daily rain	88.6 mm (3.5 in)	58.1 mm (2.3 in)	5 years	31 of 100 (Routine)
21 August 1948	Saint John, CA	daily high max	28.3 C (82.9 F)	2.7 C (4.9 F)	48 years	29 of 100 (Routine)
21 August 1948	Verhojansk, RU	daily high min	15.8 C (60.4 F)	4.9 C (8.8 F)	45 years	29 of 100 (Routine)
21 August 1948	Huntsville, US	daily high max	40.6 C (105.1 F)	3.4 C (6.1 F)	43 years	29 of 100 (Routine)
21 August 1948	New Westminster, CA	daily rain	25.7 mm (1.0 in)	0.6 mm (0.02 in)	72 years	28 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

1800 to 1948

Records set or tied on this calendar date in each year from 1800 to 1948. 1948 had 305 records.

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

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	767
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,289

Download the Data

Data for records on 1948-08-21: 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 2026-10-13 (13 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 100	243
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	1