Weather Records on 21 August 1954

497 weather records were set or tied worldwide on 21 August 1954. Highest significance: Sheffield, GB.

Key Facts for 21 August 1954

On 21 August 1954, 497 weather records were set or tied at long-record stations worldwide.
61 were record highs and 139 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 10 monthly and 486 daily.
Sheffield set a daily record precipitation of 45.2 mm (1.8 in) on 21 August 1954.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 450 records.

Record Map

497 stations

497 station records on 21 August 1954 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1954: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sheffield	United Kingdom	Record daily precipitation	45.2 mm (1.8 in)	61 of 100 (Major)
Humboldt	Canada	Record daily precipitation	50.3 mm (2.0 in)	54 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record daily precipitation	85.0 mm (3.3 in)	51 of 100 (Notable)
Farmville	United States	Record daily precipitation	61.0 mm (2.4 in)	51 of 100 (Notable)
Attarikhat	India	Record daily precipitation	133.4 mm (5.3 in)	49 of 100 (Notable)
Denton	United States	Record daily precipitation	26.4 mm (1.0 in)	49 of 100 (Notable)
Calera	United States	Record daily precipitation	78.0 mm (3.1 in)	48 of 100 (Notable)
Bonham 3NNE	United States	Record daily precipitation	69.9 mm (2.8 in)	46 of 100 (Notable)
Basel Binningen	Switzerland	Record daily precipitation	37.2 mm (1.5 in)	45 of 100 (Notable)
Pilger	Canada	Record daily precipitation	41.4 mm (1.6 in)	43 of 100 (Notable)
Portales	United States	Record daily precipitation	73.4 mm (2.9 in)	43 of 100 (Notable)
Jamalpur	India	Record daily precipitation	133.1 mm (5.2 in)	42 of 100 (Notable)
Bolivar Wtr Wks	United States	Record daily precipitation	56.4 mm (2.2 in)	42 of 100 (Notable)
Ninette	Canada	Record daily precipitation	34.8 mm (1.4 in)	41 of 100 (Notable)
Begusarai	India	Record daily precipitation	134.1 mm (5.3 in)	41 of 100 (Notable)
Martinsburg E W Virginia Rgnl	United States	Record daily precipitation	59.7 mm (2.4 in)	40 of 100 (Notable)
Davidson	Canada	Record daily precipitation	36.1 mm (1.4 in)	39 of 100 (Notable)
Aach	Germany	Record daily precipitation	39.5 mm (1.6 in)	39 of 100 (Notable)
Bano	India	Record daily precipitation	101.6 mm (4.0 in)	39 of 100 (Notable)
Vilatnikulam	India	Record daily precipitation	37.6 mm (1.5 in)	39 of 100 (Notable)
Jetmore	United States	Record daily precipitation	59.9 mm (2.4 in)	38 of 100 (Notable)
Liberal	United States	Record daily precipitation	60.5 mm (2.4 in)	38 of 100 (Notable)
Lewisburg 3 N	United States	Record daily precipitation	31.2 mm (1.2 in)	37 of 100 (Notable)
Kealia 1112	United States	Record daily precipitation	27.7 mm (1.1 in)	37 of 100 (Notable)
Neshaminy Falls	United States	Record daily precipitation	63.0 mm (2.5 in)	36 of 100 (Notable)
Grover 2 S	United States	Record low maximum temperature	14.4 C (57.9 F)	36 of 100 (Notable)
Orangajuli	India	Record daily precipitation	150.1 mm (5.9 in)	35 of 100 (Notable)
Geneve Observatoire	Switzerland	Record daily precipitation	61.7 mm (2.4 in)	35 of 100 (Notable)
Kamiah	United States	Record daily precipitation	47.5 mm (1.9 in)	35 of 100 (Notable)
Sublette 7WSW	United States	Record daily precipitation	48.3 mm (1.9 in)	35 of 100 (Notable)
Muenster	Canada	Record daily precipitation	30.2 mm (1.2 in)	34 of 100 (Routine)
Cidra 1 E	Puerto Rico [United States]	Record daily precipitation	51.3 mm (2.0 in)	34 of 100 (Routine)
Reading Wb City	United States	Record daily precipitation	30.5 mm (1.2 in)	34 of 100 (Routine)
Boone	United States	Record daily precipitation	54.6 mm (2.1 in)	33 of 100 (Routine)
Syracuse	United States	Record daily precipitation	53.3 mm (2.1 in)	33 of 100 (Routine)
Elko Rgnl AP	United States	Record low maximum temperature	21.7 C (71.1 F)	33 of 100 (Routine)
Montelimar	France	Record daily precipitation	83.3 mm (3.3 in)	32 of 100 (Routine)
Warthausen-Birkenhard	Germany	Record daily precipitation	32.3 mm (1.3 in)	32 of 100 (Routine)
Guntur	India	Record daily precipitation	71.9 mm (2.8 in)	32 of 100 (Routine)
Ephrata	United States	Record daily precipitation	56.1 mm (2.2 in)	32 of 100 (Routine)
Harpers Ferry River	United States	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Villiersdorp	South Africa	Record daily precipitation	33.4 mm (1.3 in)	31 of 100 (Routine)
Santander Centro	Spain	Record daily precipitation	40.7 mm (1.6 in)	31 of 100 (Routine)
Tada	India	Record daily precipitation	58.4 mm (2.3 in)	30 of 100 (Routine)
Zuerich/Fluntern	Switzerland	Record daily precipitation	64.9 mm (2.6 in)	30 of 100 (Routine)
Lifton Pumping STN	United States	Record low maximum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Emmitsburg	United States	Record daily precipitation	44.5 mm (1.8 in)	30 of 100 (Routine)
Hernando	United States	Record daily precipitation	38.6 mm (1.5 in)	30 of 100 (Routine)
Chambersburg 1 ESE	United States	Record daily precipitation	39.4 mm (1.6 in)	30 of 100 (Routine)
Dundurn	Canada	Record daily precipitation	37.1 mm (1.5 in)	29 of 100 (Routine)
San German 4 W	Puerto Rico [United States]	Record low minimum temperature	15.0 C (59.0 F)	29 of 100 (Routine)
Durant	United States	Record daily precipitation	25.7 mm (1.0 in)	29 of 100 (Routine)
Hugo	United States	Record daily precipitation	53.3 mm (2.1 in)	29 of 100 (Routine)
Miami	United States	Record daily precipitation	43.4 mm (1.7 in)	28 of 100 (Routine)
Quincy Exp STN	United States	Record daily precipitation	60.2 mm (2.4 in)	28 of 100 (Routine)
Salmon AP	United States	Record low maximum temperature	17.2 C (63.0 F)	28 of 100 (Routine)
Glenwood 3SW	United States	Record low maximum temperature	21.1 C (70.0 F)	28 of 100 (Routine)
Farson 2NNE	United States	Record low maximum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Lake Yellowstone	United States	Record low maximum temperature	10.6 C (51.1 F)	28 of 100 (Routine)
Mangalgiri	India	Record daily precipitation	81.3 mm (3.2 in)	27 of 100 (Routine)

Counts by Type and Timescale

497 records

Records set or tied on 21 August 1954 by type: Highest daily maximum 24, Lowest daily maximum 115, Highest daily minimum 37, Lowest daily minimum 24, Heaviest daily rainfall 297.

Records on 21 August 1954 by type
Record type	Records
Highest daily maximum	24
Lowest daily maximum	115
Highest daily minimum	37
Lowest daily minimum	24
Heaviest daily rainfall	297
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1954 by timescale: all-time 1, monthly 10, daily 486.

How Much Records Were Beaten By

437 broken records

Margins by which the 437 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.3. Ties are not counted.

Top 20 by Significance

21 August 1954

Top 20 records on 21 August 1954 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1954	Sheffield, GB	daily rain	45.2 mm (1.8 in)	26.7 mm (1.1 in)	49 years	61 of 100 (Major)
21 August 1954	Humboldt, CA	daily rain	50.3 mm (2.0 in)	42.7 mm (1.7 in)	24 years	54 of 100 (Notable)
21 August 1954	Col du Grand St-Bernard, CH	monthly rain	85.0 mm (3.3 in)	35.0 mm (1.4 in)	8 years	51 of 100 (Notable)
21 August 1954	Farmville, US	daily rain	61.0 mm (2.4 in)	50.8 mm (2.0 in)	52 years	51 of 100 (Notable)
21 August 1954	Attarikhat, IN	daily rain	133.4 mm (5.3 in)	78.3 mm (3.1 in)	43 years	49 of 100 (Notable)
21 August 1954	Denton, US	daily rain	26.4 mm (1.0 in)	19.8 mm (0.8 in)	36 years	49 of 100 (Notable)
21 August 1954	Calera, US	daily rain	78.0 mm (3.1 in)	50.1 mm (2.0 in)	33 years	48 of 100 (Notable)
21 August 1954	Bonham 3NNE, US	daily rain	69.9 mm (2.8 in)	56.7 mm (2.2 in)	47 years	46 of 100 (Notable)
21 August 1954	Basel Binningen, CH	daily rain	37.2 mm (1.5 in)	20.6 mm (0.8 in)	43 years	45 of 100 (Notable)
21 August 1954	Pilger, CA	daily rain	41.4 mm (1.6 in)	22.6 mm (0.9 in)	36 years	43 of 100 (Notable)
21 August 1954	Portales, US	daily rain	73.4 mm (2.9 in)	43.9 mm (1.7 in)	28 years	43 of 100 (Notable)
21 August 1954	Jamalpur, IN	daily rain	133.1 mm (5.2 in)	69.6 mm (2.7 in)	44 years	42 of 100 (Notable)
21 August 1954	Bolivar Wtr Wks, US	daily rain	56.4 mm (2.2 in)	32.3 mm (1.3 in)	47 years	42 of 100 (Notable)
21 August 1954	Ninette, CA	daily rain	34.8 mm (1.4 in)	29.0 mm (1.1 in)	12 years	41 of 100 (Notable)
21 August 1954	Begusarai, IN	daily rain	134.1 mm (5.3 in)	64.2 mm (2.5 in)	43 years	41 of 100 (Notable)
21 August 1954	Martinsburg E W Virginia Rgnl, US	daily rain	59.7 mm (2.4 in)	45.7 mm (1.8 in)	15 years	40 of 100 (Notable)
21 August 1954	Davidson, CA	daily rain	36.1 mm (1.4 in)	26.7 mm (1.1 in)	16 years	39 of 100 (Notable)
21 August 1954	Aach, DE	daily rain	39.5 mm (1.6 in)	21.8 mm (0.9 in)	13 years	39 of 100 (Notable)
21 August 1954	Bano, IN	daily rain	101.6 mm (4.0 in)	47.8 mm (1.9 in)	49 years	39 of 100 (Notable)
21 August 1954	Vilatnikulam, IN	daily rain	37.6 mm (1.5 in)	27.2 mm (1.1 in)	45 years	39 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 1954

Records set or tied on this calendar date in each year from 1800 to 1954. 1954 had 497 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 1954-08-21: 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 10	332
10 to 20	55
20 to 30	27
30 to 40	7
40 to 50	9
50 to 60	4
60 to 70	2
70 to 80	1