Weather Records on 21 August 1952

368 weather records were set or tied worldwide on 21 August 1952. Highest significance: Montreal McGill, CA.

Key Facts for 21 August 1952

On 21 August 1952, 368 weather records were set or tied at long-record stations worldwide.
103 were record highs and 42 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 360 daily.
Montreal McGill set a daily record precipitation of 72.9 mm (2.9 in) on 21 August 1952.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 450 records.

Record Map

368 stations

368 station records on 21 August 1952 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1952: highest significance records shown on the map
Station	Country	Type	Value	Significance
Montreal McGill	Canada	Record daily precipitation	72.9 mm (2.9 in)	66 of 100 (Major)
Karnal	India	Record daily precipitation	269.7 mm (10.6 in)	62 of 100 (Major)
Laingsburg	South Africa	Record daily precipitation	44.7 mm (1.8 in)	62 of 100 (Major)
Parnu	Estonia	Record daily precipitation	36.7 mm (1.4 in)	58 of 100 (Notable)
Panipat	India	Record daily precipitation	142.2 mm (5.6 in)	51 of 100 (Notable)
Kaithal	India	Record daily precipitation	101.9 mm (4.0 in)	50 of 100 (Notable)
Galesburg	United States	Record daily precipitation	61.2 mm (2.4 in)	47 of 100 (Notable)
Bethlehem Lehigh UNIV	United States	Record daily precipitation	58.9 mm (2.3 in)	47 of 100 (Notable)
Kairana	India	Record daily precipitation	142.5 mm (5.6 in)	45 of 100 (Notable)
Tecumseh 1S	United States	Record daily precipitation	113.8 mm (4.5 in)	45 of 100 (Notable)
Simcoe	Canada	Record daily precipitation	27.9 mm (1.1 in)	44 of 100 (Notable)
Port Dover	Canada	Record daily precipitation	53.3 mm (2.1 in)	42 of 100 (Notable)
Knysna (Tnk)	South Africa	Record daily precipitation	40.4 mm (1.6 in)	42 of 100 (Notable)
Young	United States	Record daily precipitation	63.0 mm (2.5 in)	41 of 100 (Notable)
Healy	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Gaspe	Canada	Record daily precipitation	26.9 mm (1.1 in)	39 of 100 (Notable)
Jullundar	India	Record daily precipitation	143.0 mm (5.6 in)	39 of 100 (Notable)
Bratsk	Russia	Record daily precipitation	52.5 mm (2.1 in)	39 of 100 (Notable)
Warrenton 1 N	United States	Record daily precipitation	80.0 mm (3.1 in)	39 of 100 (Notable)
Proddatur	India	Record daily precipitation	122.4 mm (4.8 in)	38 of 100 (Notable)
Tauru(Uaoru)	India	Record daily precipitation	94.0 mm (3.7 in)	38 of 100 (Notable)
Bhainswal	India	Record daily precipitation	127.0 mm (5.0 in)	38 of 100 (Notable)
Norton 9SSE	United States	Record daily precipitation	52.1 mm (2.1 in)	38 of 100 (Notable)
Leoti	United States	Record daily precipitation	52.6 mm (2.1 in)	37 of 100 (Notable)
Auburn 5 ESE	United States	Record daily precipitation	57.9 mm (2.3 in)	37 of 100 (Notable)
Gospic	Croatia	Record daily precipitation	42.4 mm (1.7 in)	36 of 100 (Notable)
Udayagiri	India	Record daily precipitation	69.1 mm (2.7 in)	36 of 100 (Notable)
Arriba	United States	Record daily precipitation	48.3 mm (1.9 in)	36 of 100 (Notable)
Mexico	United States	Record daily precipitation	77.5 mm (3.1 in)	36 of 100 (Notable)
Fredonia	United States	Record daily precipitation	55.1 mm (2.2 in)	36 of 100 (Notable)
Porto Novo	India	Record daily precipitation	60.7 mm (2.4 in)	35 of 100 (Notable)
Phillipsburg 1 SSE	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Lumding	India	Record daily precipitation	118.9 mm (4.7 in)	34 of 100 (Routine)
Thanesar	India	Record daily precipitation	137.2 mm (5.4 in)	33 of 100 (Routine)
Vajda-Guba	Russia	Record low minimum temperature	-0.9 C (30.4 F)	33 of 100 (Routine)
Lennoxville	Canada	Record daily precipitation	28.7 mm (1.1 in)	32 of 100 (Routine)
Ghaziabad	India	Record daily precipitation	45.7 mm (1.8 in)	32 of 100 (Routine)
Dwars-In-Die-Weg	South Africa	Record daily precipitation	35.1 mm (1.4 in)	32 of 100 (Routine)
Fulton	United States	Record daily precipitation	67.6 mm (2.7 in)	32 of 100 (Routine)
Clarksville	United States	Record daily precipitation	44.7 mm (1.8 in)	32 of 100 (Routine)
Marshall	United States	Record daily precipitation	84.8 mm (3.3 in)	31 of 100 (Routine)
Macdonald College	Canada	Record daily precipitation	38.9 mm (1.5 in)	30 of 100 (Routine)
Franklin	United States	Record daily precipitation	40.1 mm (1.6 in)	30 of 100 (Routine)
Louisiana Starks Nurse	United States	Record daily precipitation	41.9 mm (1.6 in)	30 of 100 (Routine)
Brockville	Canada	Record daily precipitation	32.0 mm (1.3 in)	29 of 100 (Routine)
Sohana	India	Record daily precipitation	95.3 mm (3.8 in)	29 of 100 (Routine)
Hoshiarpur	India	Record daily precipitation	123.4 mm (4.9 in)	29 of 100 (Routine)
Aligarh	India	Record daily precipitation	66.3 mm (2.6 in)	29 of 100 (Routine)
Eldon	United States	Record daily precipitation	62.2 mm (2.4 in)	29 of 100 (Routine)
Table Rock 4N	United States	Record daily precipitation	52.1 mm (2.1 in)	29 of 100 (Routine)
Goudveld (Bos)	South Africa	Record daily precipitation	36.8 mm (1.4 in)	28 of 100 (Routine)
Cedaredge	United States	Record low maximum temperature	22.8 C (73.0 F)	28 of 100 (Routine)
Hermann	United States	Record daily precipitation	49.8 mm (2.0 in)	28 of 100 (Routine)
Cutchogue	United States	Record daily precipitation	51.1 mm (2.0 in)	28 of 100 (Routine)
Bic	Canada	Record daily precipitation	27.2 mm (1.1 in)	27 of 100 (Routine)
Rajaund	India	Record daily precipitation	99.1 mm (3.9 in)	27 of 100 (Routine)
Kuakhera	India	Record daily precipitation	101.6 mm (4.0 in)	27 of 100 (Routine)
Brantford	Canada	Record low minimum temperature	2.8 C (37.0 F)	26 of 100 (Routine)
Dhone	India	Record daily precipitation	48.3 mm (1.9 in)	26 of 100 (Routine)
Jagadhari	India	Record daily precipitation	99.6 mm (3.9 in)	26 of 100 (Routine)

Counts by Type and Timescale

368 records

Records set or tied on 21 August 1952 by type: Highest daily maximum 34, Lowest daily maximum 17, Highest daily minimum 69, Lowest daily minimum 25, Heaviest daily rainfall 223.

Records on 21 August 1952 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	17
Highest daily minimum	69
Lowest daily minimum	25
Heaviest daily rainfall	223
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1952 by timescale: all-time 1, monthly 7, daily 360.

How Much Records Were Beaten By

308 broken records

Margins by which the 308 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 126.2. Ties are not counted.

Top 20 by Significance

21 August 1952

Top 20 records on 21 August 1952 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1952	Montreal McGill, CA	daily rain	72.9 mm (2.9 in)	42.4 mm (1.7 in)	60 years	66 of 100 (Major)
21 August 1952	Karnal, IN	all-time rain	269.7 mm (10.6 in)	88.9 mm (3.5 in)	4 years	62 of 100 (Major)
21 August 1952	Laingsburg, ZA	monthly rain	44.7 mm (1.8 in)	16.0 mm (0.6 in)	37 years	62 of 100 (Major)
21 August 1952	Parnu, EE	daily rain	36.7 mm (1.4 in)	23.0 mm (0.9 in)	58 years	58 of 100 (Notable)
21 August 1952	Panipat, IN	daily rain	142.2 mm (5.6 in)	126.2 mm (5.0 in)	23 years	51 of 100 (Notable)
21 August 1952	Kaithal, IN	daily rain	101.9 mm (4.0 in)	63.5 mm (2.5 in)	35 years	50 of 100 (Notable)
21 August 1952	Galesburg, US	daily rain	61.2 mm (2.4 in)	43.4 mm (1.7 in)	48 years	47 of 100 (Notable)
21 August 1952	Bethlehem Lehigh UNIV, US	daily rain	58.9 mm (2.3 in)	38.6 mm (1.5 in)	52 years	47 of 100 (Notable)
21 August 1952	Kairana, IN	daily rain	142.5 mm (5.6 in)	90.4 mm (3.6 in)	16 years	45 of 100 (Notable)
21 August 1952	Tecumseh 1S, US	monthly rain	113.8 mm (4.5 in)	23.9 mm (0.9 in)	51 years	45 of 100 (Notable)
21 August 1952	Simcoe, CA	daily rain	27.9 mm (1.1 in)	13.7 mm (0.5 in)	79 years	44 of 100 (Notable)
21 August 1952	Port Dover, CA	daily rain	53.3 mm (2.1 in)	13.2 mm (0.5 in)	77 years	42 of 100 (Notable)
21 August 1952	Knysna (Tnk), ZA	daily rain	40.4 mm (1.6 in)	28.0 mm (1.1 in)	55 years	42 of 100 (Notable)
21 August 1952	Young, US	daily rain	63.0 mm (2.5 in)	26.2 mm (1.0 in)	47 years	41 of 100 (Notable)
21 August 1952	Healy, US	daily rain	36.8 mm (1.4 in)	28.9 mm (1.1 in)	39 years	41 of 100 (Notable)
21 August 1952	Gaspe, CA	daily rain	26.9 mm (1.1 in)	21.1 mm (0.8 in)	35 years	39 of 100 (Notable)
21 August 1952	Jullundar, IN	daily rain	143.0 mm (5.6 in)	90.4 mm (3.6 in)	5 years	39 of 100 (Notable)
21 August 1952	Bratsk, RU	daily rain	52.5 mm (2.1 in)	22.8 mm (0.9 in)	23 years	39 of 100 (Notable)
21 August 1952	Warrenton 1 N, US	daily rain	80.0 mm (3.1 in)	31.0 mm (1.2 in)	32 years	39 of 100 (Notable)
21 August 1952	Proddatur, IN	daily rain	122.4 mm (4.8 in)	40.6 mm (1.6 in)	40 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

1800 to 1952

Records set or tied on this calendar date in each year from 1800 to 1952. 1952 had 368 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 1952-08-21: 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 2026-10-14 (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	252
20 to 40	41
40 to 60	10
60 to 80	1
80 to 100	3
100 to 120	0
120 to 140	1