Weather Records on 21 August 1997

1,291 weather records were set or tied worldwide on 21 August 1997. Highest significance: Estell Manor, US.

Key Facts for 21 August 1997

On 21 August 1997, 1,291 weather records were set or tied at long-record stations worldwide.
729 were record highs and 295 were record lows, counting maximum and minimum temperature.
By timescale, 13 were all-time records, 31 monthly and 1,247 daily.
Estell Manor set an all-time record daily precipitation of 320.0 mm (12.6 in) on 21 August 1997.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 445 records.

Record Map

1,291 stations

1,291 station records on 21 August 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Estell Manor	United States	Record daily precipitation	320.0 mm (12.6 in)	70 of 100 (Major)
Belleplain STN Forest	United States	Record daily precipitation	231.1 mm (9.1 in)	69 of 100 (Major)
Bhubaneswar	India	Record daily precipitation	254.0 mm (10.0 in)	67 of 100 (Major)
Dover	United States	Record daily precipitation	132.1 mm (5.2 in)	66 of 100 (Major)
Mays Landing 1 W	United States	Record daily precipitation	221.0 mm (8.7 in)	66 of 100 (Major)
Reutlingen-Betzingen	Germany	Record daily precipitation	54.8 mm (2.2 in)	56 of 100 (Notable)
Fruholmen Fyr	Norway	Record daily precipitation	33.5 mm (1.3 in)	52 of 100 (Notable)
Elmendorf AFB	United States	Record daily precipitation	50.0 mm (2.0 in)	52 of 100 (Notable)
Greenville	United States	Record daily precipitation	114.8 mm (4.5 in)	51 of 100 (Notable)
Altotonga	Mexico	Record low maximum temperature	10.6 C (51.1 F)	50 of 100 (Notable)
Toms River	United States	Record daily precipitation	152.4 mm (6.0 in)	49 of 100 (Notable)
McKinney Muni AP	United States	Record high minimum temperature	29.4 C (84.9 F)	49 of 100 (Notable)
Sturgeon Bay Exp Farm	United States	Record daily precipitation	66.0 mm (2.6 in)	49 of 100 (Notable)
Ayutla	Mexico	Record low minimum temperature	15.0 C (59.0 F)	47 of 100 (Notable)
Seabrook Farms	United States	Record daily precipitation	120.1 mm (4.7 in)	47 of 100 (Notable)
Siping	China	Record daily precipitation	157.1 mm (6.2 in)	46 of 100 (Notable)
Setauket Strong	United States	Record daily precipitation	40.9 mm (1.6 in)	45 of 100 (Notable)
Torsvag Fyr	Norway	Record daily precipitation	33.6 mm (1.3 in)	44 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record high maximum temperature	36.7 C (98.1 F)	44 of 100 (Notable)
Harbin	China	Record daily precipitation	59.0 mm (2.3 in)	43 of 100 (Notable)
Federal Pt	United States	Record high minimum temperature	25.0 C (77.0 F)	43 of 100 (Notable)
Pontiac Wwtp	United States	Record low maximum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Uniontown 1 NE	United States	Record daily precipitation	25.1 mm (1.0 in)	43 of 100 (Notable)
Cet Central England	United Kingdom	Record high minimum temperature	16.4 C (61.5 F)	42 of 100 (Notable)
Batesville	United States	Record daily precipitation	50.3 mm (2.0 in)	42 of 100 (Notable)
Hamburg	United States	Record daily precipitation	47.5 mm (1.9 in)	42 of 100 (Notable)
Vestervig	Denmark	Record high minimum temperature	17.7 C (63.9 F)	41 of 100 (Notable)
Boquilla Numero Uno	Mexico	Record high minimum temperature	25.6 C (78.1 F)	41 of 100 (Notable)
Svinoy Fyr	Norway	Record high minimum temperature	19.9 C (67.8 F)	41 of 100 (Notable)
Armagh	United Kingdom	Record high minimum temperature	16.6 C (61.9 F)	41 of 100 (Notable)
Sturgeon Bay Exp Farm	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Zhangwu	China	Record daily precipitation	127.2 mm (5.0 in)	40 of 100 (Notable)
Dublin Phoenix Park	Ireland	Record high minimum temperature	16.4 C (61.5 F)	40 of 100 (Notable)
Tecolutla	Mexico	Record high maximum temperature	41.7 C (107.1 F)	40 of 100 (Notable)
Elgin Water	United States	Record low maximum temperature	18.9 C (66.0 F)	40 of 100 (Notable)
Indian Mills 2 W	United States	Record daily precipitation	73.9 mm (2.9 in)	40 of 100 (Notable)
Hawley 1 E	United States	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Cuitzeo	Mexico	Record low maximum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Gaylord	United States	Record low maximum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Mohonk Lake	United States	Record daily precipitation	59.4 mm (2.3 in)	39 of 100 (Notable)
Bellefontaine	United States	Record low maximum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Oksoey Fyr	Norway	Record high minimum temperature	17.5 C (63.5 F)	38 of 100 (Notable)
Charleston	United States	Record low maximum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Grayling	United States	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Batavia	United States	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
Hiram	United States	Record low maximum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Faerder Fyr	Norway	Record high minimum temperature	21.6 C (70.9 F)	37 of 100 (Notable)
Oxford	United Kingdom	Record high minimum temperature	17.5 C (63.5 F)	37 of 100 (Notable)
Stockton 1 E	United States	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
West Buxton 2 NNW	United States	Record daily precipitation	46.0 mm (1.8 in)	37 of 100 (Notable)
Merriman Dam	United States	Record daily precipitation	54.9 mm (2.2 in)	37 of 100 (Notable)
Bear Gap	United States	Record daily precipitation	43.2 mm (1.7 in)	37 of 100 (Notable)
Marinette	United States	Record low maximum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
El Platanito	Mexico	Record low minimum temperature	10.0 C (50.0 F)	36 of 100 (Notable)
Plymouth 5 E	United States	Record daily precipitation	81.5 mm (3.2 in)	36 of 100 (Notable)
Weatherford	United States	Record daily precipitation	36.3 mm (1.4 in)	36 of 100 (Notable)
Crockett	United States	Record high minimum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Falfurrias	United States	Record high maximum temperature	41.7 C (107.1 F)	36 of 100 (Notable)
Cerro de Ortega	Mexico	Record low minimum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
Chumphon	Thailand	Record daily precipitation	59.9 mm (2.4 in)	35 of 100 (Notable)

Counts by Type and Timescale

1,291 records

Records set or tied on 21 August 1997 by type: Highest daily maximum 414, Lowest daily maximum 202, Highest daily minimum 315, Lowest daily minimum 93, Heaviest daily rainfall 267.

Records on 21 August 1997 by type
Record type	Records
Highest daily maximum	414
Lowest daily maximum	202
Highest daily minimum	315
Lowest daily minimum	93
Heaviest daily rainfall	267
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1997 by timescale: all-time 13, monthly 31, daily 1,247.

How Much Records Were Beaten By

975 broken records

Margins by which the 975 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 170.4. Ties are not counted.

Top 20 by Significance

21 August 1997

Top 20 records on 21 August 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1997	Estell Manor, US	all-time rain	320.0 mm (12.6 in)	170.4 mm (6.7 in)	25 years	70 of 100 (Major)
21 August 1997	Belleplain STN Forest, US	all-time rain	231.1 mm (9.1 in)	53.3 mm (2.1 in)	58 years	69 of 100 (Major)
21 August 1997	Bhubaneswar, IN	daily rain	254.0 mm (10.0 in)	165.1 mm (6.5 in)	66 years	67 of 100 (Major)
21 August 1997	Dover, US	daily rain	132.1 mm (5.2 in)	74.4 mm (2.9 in)	64 years	66 of 100 (Major)
21 August 1997	Mays Landing 1 W, US	all-time rain	221.0 mm (8.7 in)	67.3 mm (2.6 in)	25 years	66 of 100 (Major)
21 August 1997	Reutlingen-Betzingen, DE	daily rain	54.8 mm (2.2 in)	29.8 mm (1.2 in)	43 years	56 of 100 (Notable)
21 August 1997	Fruholmen Fyr, NO	daily rain	33.5 mm (1.3 in)	18.2 mm (0.7 in)	28 years	52 of 100 (Notable)
21 August 1997	Elmendorf AFB, US	daily rain	50.0 mm (2.0 in)	31.5 mm (1.2 in)	24 years	52 of 100 (Notable)
21 August 1997	Greenville, US	daily rain	114.8 mm (4.5 in)	48.3 mm (1.9 in)	48 years	51 of 100 (Notable)
21 August 1997	Altotonga, MX	daily low max	10.6 C (51.1 F)	6.1 C (11.0 F)	67 years	50 of 100 (Notable)
21 August 1997	Toms River, US	monthly rain	152.4 mm (6.0 in)	25.4 mm (1.0 in)	56 years	49 of 100 (Notable)
21 August 1997	McKinney Muni AP, US	daily high min	29.4 C (84.9 F)	3.3 C (5.9 F)	92 years	49 of 100 (Notable)
21 August 1997	Sturgeon Bay Exp Farm, US	daily rain	66.0 mm (2.6 in)	33.0 mm (1.3 in)	42 years	49 of 100 (Notable)
21 August 1997	Ayutla, MX	daily low min	15.0 C (59.0 F)	3.9 C (7.0 F)	34 years	47 of 100 (Notable)
21 August 1997	Seabrook Farms, US	daily rain	120.1 mm (4.7 in)	100.5 mm (4.0 in)	11 years	47 of 100 (Notable)
21 August 1997	Siping, CN	all-time rain	157.1 mm (6.2 in)	15.8 mm (0.6 in)	44 years	46 of 100 (Notable)
21 August 1997	Setauket Strong, US	daily rain	40.9 mm (1.6 in)	8.6 mm (0.34 in)	108 years	45 of 100 (Notable)
21 August 1997	Torsvag Fyr, NO	monthly rain	33.6 mm (1.3 in)	7.6 mm (0.30 in)	37 years	44 of 100 (Notable)
21 August 1997	Tarpon Spgs Sewage Plt, US	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	95 years	44 of 100 (Notable)
21 August 1997	Harbin, CN	daily rain	59.0 mm (2.3 in)	44.5 mm (1.8 in)	10 years	43 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 1997

Records set or tied on this calendar date in each year from 1800 to 1997. 1997 had 1,291 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 1997-08-21: 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 25	945
25 to 50	24
50 to 75	3
75 to 100	0
100 to 125	1
125 to 150	0
150 to 175	2