Weather Records on 17 August 1993

803 weather records were set or tied worldwide on 17 August 1993. Highest significance: Pilot Rock 1 SE, US.

Key Facts for 17 August 1993

On 17 August 1993, 803 weather records were set or tied at long-record stations worldwide.
235 were record highs and 257 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 22 monthly and 780 daily.
Pilot Rock 1 SE set a daily record precipitation of 31.8 mm (1.3 in) on 17 August 1993.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 472 records.

Record Map

803 stations

803 station records on 17 August 1993 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1993: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pilot Rock 1 SE	United States	Record daily precipitation	31.8 mm (1.3 in)	68 of 100 (Major)
Greencastle 1 W	United States	Record daily precipitation	95.5 mm (3.8 in)	63 of 100 (Major)
Lakeport 2	United States	Record daily precipitation	78.2 mm (3.1 in)	62 of 100 (Major)
Palm 3 SE	United States	Record daily precipitation	99.1 mm (3.9 in)	60 of 100 (Major)
Seymour 1 WSW	United States	Record daily precipitation	64.0 mm (2.5 in)	57 of 100 (Notable)
St Peter	United States	Record daily precipitation	48.3 mm (1.9 in)	55 of 100 (Notable)
Dividalen	Norway	Record daily precipitation	33.3 mm (1.3 in)	53 of 100 (Notable)
Chelsea	United States	Record daily precipitation	67.3 mm (2.6 in)	53 of 100 (Notable)
Tamdy	Uzbekistan	Record daily precipitation	28.7 mm (1.1 in)	53 of 100 (Notable)
Salem	United States	Record daily precipitation	72.1 mm (2.8 in)	52 of 100 (Notable)
Claussville	United States	Record daily precipitation	98.3 mm (3.9 in)	52 of 100 (Notable)
Martinsville 2 SW	United States	Record daily precipitation	147.8 mm (5.8 in)	50 of 100 (Notable)
Richland	United States	Record low maximum temperature	15.6 C (60.1 F)	50 of 100 (Notable)
Huittinen Lauttakyla	Finland	Record daily precipitation	44.2 mm (1.7 in)	48 of 100 (Notable)
Nikkaluokta	Sweden	Record daily precipitation	44.1 mm (1.7 in)	48 of 100 (Notable)
Tamaqua 4 N Dam	United States	Record daily precipitation	66.5 mm (2.6 in)	48 of 100 (Notable)
Bloomington Indiana UNIV	United States	Record daily precipitation	95.3 mm (3.8 in)	47 of 100 (Notable)
Lakehurst AP	United States	Record daily precipitation	95.8 mm (3.8 in)	47 of 100 (Notable)
Conceicao da Barra	Brazil	Record daily precipitation	37.1 mm (1.5 in)	46 of 100 (Notable)
Arecibo 3 ESE	Puerto Rico [United States]	Record low maximum temperature	28.3 C (82.9 F)	46 of 100 (Notable)
Elliston	United States	Record daily precipitation	83.8 mm (3.3 in)	46 of 100 (Notable)
Zionsville 3 ESE	United States	Record daily precipitation	129.0 mm (5.1 in)	45 of 100 (Notable)
Madison Sewage Plt	United States	Record daily precipitation	51.8 mm (2.0 in)	44 of 100 (Notable)
Humacao 2 SSE	Puerto Rico [United States]	Record low minimum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Carlsbad	United States	Record low minimum temperature	13.9 C (57.0 F)	42 of 100 (Notable)
Goodland	United States	Record daily precipitation	30.2 mm (1.2 in)	42 of 100 (Notable)
Elko Rgnl AP	United States	Record low minimum temperature	0.0 C (32.0 F)	42 of 100 (Notable)
Hamada	Japan	Record daily precipitation	101.1 mm (4.0 in)	41 of 100 (Notable)
Anaconda	United States	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Pemberton	United States	Record daily precipitation	82.8 mm (3.3 in)	41 of 100 (Notable)
Rushville	United States	Record daily precipitation	41.9 mm (1.6 in)	41 of 100 (Notable)
Palenque (Dge)	Mexico	Record low maximum temperature	28.9 C (84.0 F)	40 of 100 (Notable)
Presa Valerio Trujano	Mexico	Record high minimum temperature	23.9 C (75.0 F)	40 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Santander/Parayas	Spain	Record high maximum temperature	33.5 C (92.3 F)	40 of 100 (Notable)
Jokkmokk	Sweden	Record daily precipitation	27.1 mm (1.1 in)	40 of 100 (Notable)
Bath	United States	Record daily precipitation	38.1 mm (1.5 in)	40 of 100 (Notable)
Neshaminy Falls	United States	Record daily precipitation	97.8 mm (3.9 in)	40 of 100 (Notable)
Snoqualmie Falls	United States	Record low maximum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
San Sebastian - Igueldo	Spain	Record high minimum temperature	23.4 C (74.1 F)	39 of 100 (Notable)
Greensburg	United States	Record daily precipitation	50.3 mm (2.0 in)	39 of 100 (Notable)
Kennewick	United States	Record low maximum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Jaina	Mexico	Record daily precipitation	122.9 mm (4.8 in)	38 of 100 (Notable)
Venice	United States	Record daily precipitation	50.3 mm (2.0 in)	38 of 100 (Notable)
Charlestown 5 NNW	United States	Record daily precipitation	58.4 mm (2.3 in)	38 of 100 (Notable)
Ravenna	United States	Record high minimum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Santa Barbara	United States	Record low minimum temperature	9.4 C (48.9 F)	37 of 100 (Notable)
Decatur Wtp	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Pana	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Rockville	United States	Record daily precipitation	67.6 mm (2.7 in)	37 of 100 (Notable)
Renovo	United States	Record high minimum temperature	19.4 C (66.9 F)	37 of 100 (Notable)
Crescent City	United States	Record high minimum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Live Oak	United States	Record low minimum temperature	18.9 C (66.0 F)	36 of 100 (Notable)
Nashville 2 NNE	United States	Record daily precipitation	52.1 mm (2.1 in)	36 of 100 (Notable)
Tonala (Dge)	Mexico	Record daily precipitation	76.2 mm (3.0 in)	35 of 100 (Notable)
Francisco I. Madero	Mexico	Record high minimum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Loche	Mexico	Record low minimum temperature	13.3 C (55.9 F)	35 of 100 (Notable)
Conchas Dam	United States	Record low minimum temperature	10.6 C (51.1 F)	35 of 100 (Notable)
Rosendale 2 E	United States	Record daily precipitation	39.9 mm (1.6 in)	35 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	43.7 mm (1.7 in)	34 of 100 (Routine)

Counts by Type and Timescale

803 records

Records set or tied on 17 August 1993 by type: Highest daily maximum 73, Lowest daily maximum 153, Highest daily minimum 162, Lowest daily minimum 104, Heaviest daily rainfall 311.

Records on 17 August 1993 by type
Record type	Records
Highest daily maximum	73
Lowest daily maximum	153
Highest daily minimum	162
Lowest daily minimum	104
Heaviest daily rainfall	311
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1993 by timescale: all-time 1, monthly 22, daily 780.

How Much Records Were Beaten By

596 broken records

Margins by which the 596 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 106.1. Ties are not counted.

Top 20 by Significance

17 August 1993

Top 20 records on 17 August 1993 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1993	Pilot Rock 1 SE, US	daily rain	31.8 mm (1.3 in)	22.1 mm (0.9 in)	67 years	68 of 100 (Major)
17 August 1993	Greencastle 1 W, US	daily rain	95.5 mm (3.8 in)	48.5 mm (1.9 in)	78 years	63 of 100 (Major)
17 August 1993	Lakeport 2, US	daily rain	78.2 mm (3.1 in)	56.6 mm (2.2 in)	55 years	62 of 100 (Major)
17 August 1993	Palm 3 SE, US	daily rain	99.1 mm (3.9 in)	78.8 mm (3.1 in)	51 years	60 of 100 (Major)
17 August 1993	Seymour 1 WSW, US	daily rain	64.0 mm (2.5 in)	32.8 mm (1.3 in)	72 years	57 of 100 (Notable)
17 August 1993	St Peter, US	daily rain	48.3 mm (1.9 in)	23.9 mm (0.9 in)	97 years	55 of 100 (Notable)
17 August 1993	Dividalen, NO	daily rain	33.3 mm (1.3 in)	20.3 mm (0.8 in)	20 years	53 of 100 (Notable)
17 August 1993	Chelsea, US	daily rain	67.3 mm (2.6 in)	37.1 mm (1.5 in)	27 years	53 of 100 (Notable)
17 August 1993	Tamdy, UZ	monthly rain	28.7 mm (1.1 in)	23.2 mm (0.9 in)	48 years	53 of 100 (Notable)
17 August 1993	Salem, US	daily rain	72.1 mm (2.8 in)	43.7 mm (1.7 in)	34 years	52 of 100 (Notable)
17 August 1993	Claussville, US	daily rain	98.3 mm (3.9 in)	67.6 mm (2.7 in)	27 years	52 of 100 (Notable)
17 August 1993	Martinsville 2 SW, US	all-time rain	147.8 mm (5.8 in)	20.3 mm (0.8 in)	33 years	50 of 100 (Notable)
17 August 1993	Richland, US	monthly low max	15.6 C (60.1 F)	1.1 C (2.0 F)	94 years	50 of 100 (Notable)
17 August 1993	Huittinen Lauttakyla, FI	daily rain	44.2 mm (1.7 in)	24.4 mm (1.0 in)	32 years	48 of 100 (Notable)
17 August 1993	Nikkaluokta, SE	monthly rain	44.1 mm (1.7 in)	14.1 mm (0.6 in)	32 years	48 of 100 (Notable)
17 August 1993	Tamaqua 4 N Dam, US	daily rain	66.5 mm (2.6 in)	43.1 mm (1.7 in)	55 years	48 of 100 (Notable)
17 August 1993	Bloomington Indiana UNIV, US	daily rain	95.3 mm (3.8 in)	25.4 mm (1.0 in)	72 years	47 of 100 (Notable)
17 August 1993	Lakehurst AP, US	daily rain	95.8 mm (3.8 in)	54.9 mm (2.2 in)	46 years	47 of 100 (Notable)
17 August 1993	Conceicao da Barra, BR	daily rain	37.1 mm (1.5 in)	21.1 mm (0.8 in)	48 years	46 of 100 (Notable)
17 August 1993	Arecibo 3 ESE, PR	daily low max	28.3 C (82.9 F)	2.3 C (4.1 F)	58 years	46 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

1797 to 1993

Records set or tied on this calendar date in each year from 1797 to 1993. 1993 had 803 records.

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

Records on 08-17 in each year
Year	Records
1797	2
1802	2
1820	2
1837	1
1838	2
1841	2
1842	1
1845	2
1853	1
1854	1
1856	1
1857	1
1861	3
1862	1
1867	1
1868	3
1869	1
1872	1
1875	2
1876	5
1879	1
1881	1
1882	1
1883	2
1885	3
1886	1
1888	5
1891	1
1892	3
1893	2
1894	3
1895	2
1896	3
1897	1
1898	5
1899	8
1900	3
1901	14
1902	7
1903	6
1904	2
1905	11
1906	28
1907	9
1908	26
1909	24
1910	17
1911	18
1912	31
1913	79
1914	41
1915	28
1916	33
1917	35
1918	112
1919	37
1920	110
1921	37
1922	169
1923	161
1924	171
1925	130
1926	182
1927	228
1928	131
1929	243
1930	138
1931	302
1932	360
1933	260
1934	377
1935	437
1936	670
1937	726
1938	466
1939	364
1940	341
1941	378
1942	461
1943	743
1944	531
1945	387
1946	433
1947	682
1948	475
1949	371
1950	522
1951	413
1952	470
1953	345
1954	685
1955	465
1956	407
1957	504
1958	519
1959	543
1960	533
1961	998
1962	445
1963	650
1964	410
1965	641
1966	496
1967	679
1968	953
1969	593
1970	467
1971	447
1972	1,044
1973	750
1974	582
1975	612
1976	797
1977	1,216
1978	814
1979	1,464
1980	895
1981	1,112
1982	554
1983	1,574
1984	726
1985	948
1986	916
1987	1,150
1988	1,608
1989	687
1990	949
1991	560
1992	1,813
1993	803
1994	1,038
1995	1,724
1996	752
1997	1,544
1998	1,003
1999	697
2000	994
2001	1,101
2002	1,266
2003	948
2004	1,046
2005	722
2006	814
2007	1,646
2008	1,301
2009	922
2010	1,105
2011	956
2012	1,215
2013	802
2014	997
2015	890
2016	748
2017	544
2018	518
2019	467
2020	1,529
2021	800
2022	1,428
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 1993-08-17: 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	543
20 to 40	37
40 to 60	11
60 to 80	4
80 to 100	0
100 to 120	1