Weather Records on 21 August 1993

698 weather records were set or tied worldwide on 21 August 1993. Highest significance: Williston Sloulin Fld, US.

Key Facts for 21 August 1993

On 21 August 1993, 698 weather records were set or tied at long-record stations worldwide.
275 were record highs and 199 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 23 monthly and 674 daily.
Williston Sloulin Fld set a monthly record daily precipitation of 77.2 mm (3.0 in) on 21 August 1993.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 448 records.

Record Map

698 stations

698 station records on 21 August 1993 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1993: highest significance records shown on the map
Station	Country	Type	Value	Significance
Williston Sloulin Fld	United States	Record daily precipitation	77.2 mm (3.0 in)	64 of 100 (Major)
Powers Lake 1N	United States	Record daily precipitation	94.0 mm (3.7 in)	60 of 100 (Major)
Richfield	United States	Record daily precipitation	25.4 mm (1.0 in)	58 of 100 (Notable)
Richland	United States	Record daily precipitation	35.8 mm (1.4 in)	58 of 100 (Notable)
Lima	United States	Record daily precipitation	40.1 mm (1.6 in)	57 of 100 (Notable)
Wallowa	United States	Record daily precipitation	49.0 mm (1.9 in)	55 of 100 (Notable)
Peitas	Mexico	Record daily precipitation	112.8 mm (4.4 in)	50 of 100 (Notable)
Tecoman (Dge)	Mexico	Record daily precipitation	181.1 mm (7.1 in)	49 of 100 (Notable)
Shoshone 1 WNW	United States	Record daily precipitation	25.9 mm (1.0 in)	49 of 100 (Notable)
Moorestown 4 E	United States	Record daily precipitation	83.8 mm (3.3 in)	49 of 100 (Notable)
Qaqortoq	Greenland [Denmark]	Record daily precipitation	89.0 mm (3.5 in)	48 of 100 (Notable)
Qumarleb	China	Record daily precipitation	30.4 mm (1.2 in)	47 of 100 (Notable)
Haikou	China	Record daily precipitation	208.5 mm (8.2 in)	46 of 100 (Notable)
Loche	Mexico	Record low minimum temperature	14.4 C (57.9 F)	46 of 100 (Notable)
Olovjannaja	Russia	Record daily precipitation	50.0 mm (2.0 in)	46 of 100 (Notable)
Petrified Forest Np	United States	Record daily precipitation	40.6 mm (1.6 in)	46 of 100 (Notable)
Carbo	Mexico	Record daily precipitation	51.8 mm (2.0 in)	44 of 100 (Notable)
N Platte Rgnl AP	United States	Record daily precipitation	46.7 mm (1.8 in)	44 of 100 (Notable)
Cihuatlan (Dge)	Mexico	Record daily precipitation	104.4 mm (4.1 in)	42 of 100 (Notable)
Ixtlahuacan (Smn)	Mexico	Record daily precipitation	123.7 mm (4.9 in)	40 of 100 (Notable)
Ripley	United States	Record high minimum temperature	22.8 C (73.0 F)	40 of 100 (Notable)
Lybrook	United States	Record daily precipitation	34.8 mm (1.4 in)	40 of 100 (Notable)
Chelsea	United States	Record daily precipitation	38.4 mm (1.5 in)	40 of 100 (Notable)
Antunez	Mexico	Record low minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Querobabi	Mexico	Record daily precipitation	118.9 mm (4.7 in)	39 of 100 (Notable)
La Salada	Mexico	Record daily precipitation	129.8 mm (5.1 in)	38 of 100 (Notable)
Arbon 2 NW	United States	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
Astatla	Mexico	Record daily precipitation	56.9 mm (2.2 in)	37 of 100 (Notable)
Bozeman 12 NE	United States	Record daily precipitation	48.0 mm (1.9 in)	37 of 100 (Notable)
Coquimatlan	Mexico	Record daily precipitation	96.8 mm (3.8 in)	36 of 100 (Notable)
Sterlitamak	Russia	Record daily precipitation	37.6 mm (1.5 in)	36 of 100 (Notable)
Limon	United States	Record daily precipitation	43.2 mm (1.7 in)	36 of 100 (Notable)
Armeria	Mexico	Record daily precipitation	90.2 mm (3.6 in)	35 of 100 (Notable)
Presa Pucuato	Mexico	Record high maximum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Chapulco	Mexico	Record daily precipitation	38.9 mm (1.5 in)	35 of 100 (Notable)
Dillon U of Montana Western	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Colville	United States	Record high minimum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Desert Resorts Rgnl AP	United States	Record low minimum temperature	11.1 C (52.0 F)	35 of 100 (Notable)
Anaconda	United States	Record low maximum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Libby 1 NE Rs	United States	Record high minimum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Elizabethtown	United States	Record daily precipitation	30.5 mm (1.2 in)	34 of 100 (Routine)
Epping	United States	Record daily precipitation	53.8 mm (2.1 in)	34 of 100 (Routine)
South Newbury	United States	Record daily precipitation	42.9 mm (1.7 in)	34 of 100 (Routine)
Ocampo	Mexico	Record low minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Bolotnoe	Russia	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Eastonville 2 NNW	United States	Record daily precipitation	59.2 mm (2.3 in)	33 of 100 (Routine)
Ft Pierce	United States	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
Galata 16 SW	United States	Record daily precipitation	28.7 mm (1.1 in)	33 of 100 (Routine)
Newton Rigg	United Kingdom	Record low maximum temperature	12.6 C (54.7 F)	32 of 100 (Routine)
Tonsina	United States	Record low maximum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Callejones	Mexico	Record daily precipitation	90.4 mm (3.6 in)	31 of 100 (Routine)
Medio Monte	Mexico	Record high maximum temperature	35.6 C (96.1 F)	31 of 100 (Routine)
Presa Sabaneta	Mexico	Record high maximum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
San Bernardino Lagunas	Mexico	Record daily precipitation	51.1 mm (2.0 in)	31 of 100 (Routine)
Kljuchi	Russia	Record low minimum temperature	3.8 C (38.8 F)	31 of 100 (Routine)
Colton 2 N	United States	Record daily precipitation	31.8 mm (1.3 in)	31 of 100 (Routine)
Canton 4 SE	United States	Record daily precipitation	32.3 mm (1.3 in)	31 of 100 (Routine)
Izuhara	Japan	Record daily precipitation	103.1 mm (4.1 in)	30 of 100 (Routine)
Juchitlan	Mexico	Record high maximum temperature	38.9 C (102.0 F)	30 of 100 (Routine)
Yurecuaro	Mexico	Record high minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)

Counts by Type and Timescale

698 records

Records set or tied on 21 August 1993 by type: Highest daily maximum 103, Lowest daily maximum 135, Highest daily minimum 172, Lowest daily minimum 64, Heaviest daily rainfall 224.

Records on 21 August 1993 by type
Record type	Records
Highest daily maximum	103
Lowest daily maximum	135
Highest daily minimum	172
Lowest daily minimum	64
Heaviest daily rainfall	224
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1993 by timescale: all-time 1, monthly 23, daily 674.

How Much Records Were Beaten By

513 broken records

Margins by which the 513 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 82.8. Ties are not counted.

Top 20 by Significance

21 August 1993

Top 20 records on 21 August 1993 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1993	Williston Sloulin Fld, US	monthly rain	77.2 mm (3.0 in)	13.7 mm (0.5 in)	93 years	64 of 100 (Major)
21 August 1993	Powers Lake 1N, US	monthly rain	94.0 mm (3.7 in)	44.2 mm (1.7 in)	8 years	60 of 100 (Major)
21 August 1993	Richfield, US	daily rain	25.4 mm (1.0 in)	17.5 mm (0.7 in)	39 years	58 of 100 (Notable)
21 August 1993	Richland, US	daily rain	35.8 mm (1.4 in)	25.4 mm (1.0 in)	28 years	58 of 100 (Notable)
21 August 1993	Lima, US	daily rain	40.1 mm (1.6 in)	12.4 mm (0.5 in)	75 years	57 of 100 (Notable)
21 August 1993	Wallowa, US	monthly rain	49.0 mm (1.9 in)	8.9 mm (0.35 in)	67 years	55 of 100 (Notable)
21 August 1993	Peitas, MX	daily rain	112.8 mm (4.4 in)	81.6 mm (3.2 in)	24 years	50 of 100 (Notable)
21 August 1993	Tecoman (Dge), MX	monthly rain	181.1 mm (7.1 in)	59.7 mm (2.4 in)	23 years	49 of 100 (Notable)
21 August 1993	Shoshone 1 WNW, US	daily rain	25.9 mm (1.0 in)	21.3 mm (0.8 in)	24 years	49 of 100 (Notable)
21 August 1993	Moorestown 4 E, US	daily rain	83.8 mm (3.3 in)	20.0 mm (0.8 in)	93 years	49 of 100 (Notable)
21 August 1993	Qaqortoq, GL	daily rain	89.0 mm (3.5 in)	61.3 mm (2.4 in)	18 years	48 of 100 (Notable)
21 August 1993	Qumarleb, CN	daily rain	30.4 mm (1.2 in)	17.6 mm (0.7 in)	30 years	47 of 100 (Notable)
21 August 1993	Haikou, CN	monthly rain	208.5 mm (8.2 in)	44.4 mm (1.7 in)	42 years	46 of 100 (Notable)
21 August 1993	Loche, MX	daily low min	14.4 C (57.9 F)	5.6 C (10.1 F)	30 years	46 of 100 (Notable)
21 August 1993	Olovjannaja, RU	daily rain	50.0 mm (2.0 in)	39.1 mm (1.5 in)	6 years	46 of 100 (Notable)
21 August 1993	Petrified Forest Np, US	daily rain	40.6 mm (1.6 in)	37.0 mm (1.5 in)	0 years	46 of 100 (Notable)
21 August 1993	Carbo, MX	daily rain	51.8 mm (2.0 in)	41.9 mm (1.6 in)	26 years	44 of 100 (Notable)
21 August 1993	N Platte Rgnl AP, US	daily rain	46.7 mm (1.8 in)	42.9 mm (1.7 in)	2 years	44 of 100 (Notable)
21 August 1993	Cihuatlan (Dge), MX	daily rain	104.4 mm (4.1 in)	82.8 mm (3.3 in)	12 years	42 of 100 (Notable)
21 August 1993	Ixtlahuacan (Smn), MX	monthly rain	123.7 mm (4.9 in)	30.7 mm (1.2 in)	21 years	40 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 1993

Records set or tied on this calendar date in each year from 1800 to 1993. 1993 had 698 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 1993-08-21: 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).

Histogram of margins by which records were beaten on 21 August 1993
Margin	Records
0 to 20	479
20 to 40	20
40 to 60	11
60 to 80	1
80 to 100	2