Weather Records on 18 August 1997

1,191 weather records were set or tied worldwide on 18 August 1997. Highest significance: Mc Connellsville Lk 7, US.

Key Facts for 18 August 1997

On 18 August 1997, 1,191 weather records were set or tied at long-record stations worldwide.
651 were record highs and 370 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 28 monthly and 1,159 daily.
Mc Connellsville Lk 7 set a daily record precipitation of 84.3 mm (3.3 in) on 18 August 1997.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 437 records.

Record Map

1,191 stations

1,191 station records on 18 August 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mc Connellsville Lk 7	United States	Record daily precipitation	84.3 mm (3.3 in)	70 of 100 (Major)
Gail	United States	Record daily precipitation	67.3 mm (2.6 in)	68 of 100 (Major)
Aspermont	United States	Record daily precipitation	87.6 mm (3.4 in)	52 of 100 (Notable)
Laurelville	United States	Record daily precipitation	83.1 mm (3.3 in)	51 of 100 (Notable)
Checotah	United States	Record daily precipitation	91.9 mm (3.6 in)	51 of 100 (Notable)
Hastings 4N	United States	Record daily precipitation	50.3 mm (2.0 in)	49 of 100 (Notable)
Columbus	United States	Record daily precipitation	35.6 mm (1.4 in)	48 of 100 (Notable)
Mauston 1 SE	United States	Record low maximum temperature	15.6 C (60.1 F)	47 of 100 (Notable)
Altotonga	Mexico	Record low maximum temperature	10.6 C (51.1 F)	46 of 100 (Notable)
Washington Court House	United States	Record daily precipitation	78.2 mm (3.1 in)	46 of 100 (Notable)
Wrixum/Fohr	Germany	Record high minimum temperature	19.6 C (67.3 F)	45 of 100 (Notable)
Hanna	United States	Record daily precipitation	137.9 mm (5.4 in)	45 of 100 (Notable)
Jennings	United States	Record high minimum temperature	25.6 C (78.1 F)	44 of 100 (Notable)
Tucumcari 4 NE	United States	Record daily precipitation	37.3 mm (1.5 in)	44 of 100 (Notable)
Wagoner	United States	Record daily precipitation	68.1 mm (2.7 in)	44 of 100 (Notable)
Charlotte Court House	United States	Record high minimum temperature	25.6 C (78.1 F)	44 of 100 (Notable)
Farmville	United States	Record high minimum temperature	25.0 C (77.0 F)	44 of 100 (Notable)
Wrixum/Fohr	Germany	Record high maximum temperature	28.5 C (83.3 F)	43 of 100 (Notable)
Oksoey Fyr	Norway	Record high minimum temperature	17.6 C (63.7 F)	43 of 100 (Notable)
Tomsk	Russia	Record high minimum temperature	17.0 C (62.6 F)	43 of 100 (Notable)
Springview 2NW	United States	Record low minimum temperature	7.2 C (45.0 F)	43 of 100 (Notable)
New London	United States	Record low maximum temperature	15.0 C (59.0 F)	43 of 100 (Notable)
Oshkosh	United States	Record low maximum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Shawano 2SSW	United States	Record low maximum temperature	13.9 C (57.0 F)	43 of 100 (Notable)
Dinghai	China	Record daily precipitation	118.2 mm (4.7 in)	42 of 100 (Notable)
McPherson	United States	Record low maximum temperature	22.8 C (73.0 F)	42 of 100 (Notable)
Lake City Exp Farm	United States	Record low maximum temperature	14.4 C (57.9 F)	42 of 100 (Notable)
Kingston	United States	Record daily precipitation	54.9 mm (2.2 in)	42 of 100 (Notable)
Ipswich	United States	Record low maximum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Ocozocoautla	Mexico	Record low minimum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Fayetteville Exp STN	United States	Record daily precipitation	63.5 mm (2.5 in)	41 of 100 (Notable)
Sugar Land	United States	Record high minimum temperature	26.7 C (80.1 F)	41 of 100 (Notable)
Elkhorn	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Chilton	United States	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Fond du Lac Wwtp	United States	Record low maximum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Medford	United States	Record low maximum temperature	13.9 C (57.0 F)	41 of 100 (Notable)
Escanaba	United States	Record low minimum temperature	3.9 C (39.0 F)	41 of 100 (Notable)
El Salitre	Mexico	Record daily precipitation	110.2 mm (4.3 in)	40 of 100 (Notable)
Cresco 1 NE	United States	Record low maximum temperature	19.4 C (66.9 F)	40 of 100 (Notable)
Louisburg	United States	Record high maximum temperature	36.7 C (98.1 F)	40 of 100 (Notable)
Waupaca	United States	Record low maximum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Williams	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Eagle Pass 3N	United States	Record high minimum temperature	27.8 C (82.0 F)	39 of 100 (Notable)
Bangalore	India	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Capitan Carlos Martinez de Pi	Peru	Record high minimum temperature	21.4 C (70.5 F)	38 of 100 (Notable)
Teec Nos Pos	United States	Record daily precipitation	32.8 mm (1.3 in)	38 of 100 (Notable)
Owosso Wwtp	United States	Record low maximum temperature	17.2 C (63.0 F)	38 of 100 (Notable)
Montevideo 1SW	United States	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Philo 3 SW	United States	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Mather 3 NW	United States	Record low maximum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Stanley Wwtp	United States	Record low maximum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Sibley	United States	Record low maximum temperature	16.7 C (62.1 F)	37 of 100 (Notable)
Kingman	United States	Record low maximum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Marksville	United States	Record daily precipitation	61.5 mm (2.4 in)	37 of 100 (Notable)
Stambaugh 2SSE	United States	Record low maximum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
St Peter	United States	Record low maximum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Ft Sumner 5 S	United States	Record daily precipitation	68.6 mm (2.7 in)	37 of 100 (Notable)
Henderson 2 NNW	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Louisburg	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Monroe 2 SE	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

1,191 records

Records set or tied on 18 August 1997 by type: Highest daily maximum 289, Lowest daily maximum 261, Highest daily minimum 362, Lowest daily minimum 109, Heaviest daily rainfall 170.

Records on 18 August 1997 by type
Record type	Records
Highest daily maximum	289
Lowest daily maximum	261
Highest daily minimum	362
Lowest daily minimum	109
Heaviest daily rainfall	170
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1997 by timescale: all-time 4, monthly 28, daily 1,159.

How Much Records Were Beaten By

855 broken records

Margins by which the 855 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 69.7. Ties are not counted.

Top 20 by Significance

18 August 1997

Top 20 records on 18 August 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1997	Mc Connellsville Lk 7, US	daily rain	84.3 mm (3.3 in)	47.0 mm (1.9 in)	71 years	70 of 100 (Major)
18 August 1997	Gail, US	daily rain	67.3 mm (2.6 in)	56.1 mm (2.2 in)	60 years	68 of 100 (Major)
18 August 1997	Aspermont, US	daily rain	87.6 mm (3.4 in)	55.3 mm (2.2 in)	40 years	52 of 100 (Notable)
18 August 1997	Laurelville, US	daily rain	83.1 mm (3.3 in)	50.6 mm (2.0 in)	24 years	51 of 100 (Notable)
18 August 1997	Checotah, US	daily rain	91.9 mm (3.6 in)	60.7 mm (2.4 in)	47 years	51 of 100 (Notable)
18 August 1997	Hastings 4N, US	daily rain	50.3 mm (2.0 in)	13.5 mm (0.5 in)	101 years	49 of 100 (Notable)
18 August 1997	Columbus, US	daily rain	35.6 mm (1.4 in)	14.8 mm (0.6 in)	91 years	48 of 100 (Notable)
18 August 1997	Mauston 1 SE, US	daily low max	15.6 C (60.1 F)	5.5 C (9.9 F)	82 years	47 of 100 (Notable)
18 August 1997	Altotonga, MX	daily low max	10.6 C (51.1 F)	5.0 C (9.0 F)	67 years	46 of 100 (Notable)
18 August 1997	Washington Court House, US	monthly rain	78.2 mm (3.1 in)	11.7 mm (0.5 in)	62 years	46 of 100 (Notable)
18 August 1997	Wrixum/Fohr, DE	daily high min	19.6 C (67.3 F)	2.6 C (4.7 F)	80 years	45 of 100 (Notable)
18 August 1997	Hanna, US	monthly rain	137.9 mm (5.4 in)	46.2 mm (1.8 in)	5 years	45 of 100 (Notable)
18 August 1997	Jennings, US	daily high min	25.6 C (78.1 F)	1.2 C (2.2 F)	92 years	44 of 100 (Notable)
18 August 1997	Tucumcari 4 NE, US	daily rain	37.3 mm (1.5 in)	20.8 mm (0.8 in)	62 years	44 of 100 (Notable)
18 August 1997	Wagoner, US	daily rain	68.1 mm (2.7 in)	17.3 mm (0.7 in)	82 years	44 of 100 (Notable)
18 August 1997	Charlotte Court House, US	all-time high min	25.6 C (78.1 F)	1.7 C (3.1 F)	49 years	44 of 100 (Notable)
18 August 1997	Farmville, US	daily high min	25.0 C (77.0 F)	2.2 C (4.0 F)	96 years	44 of 100 (Notable)
18 August 1997	Wrixum/Fohr, DE	daily high max	28.5 C (83.3 F)	1.1 C (2.0 F)	103 years	43 of 100 (Notable)
18 August 1997	Oksoey Fyr, NO	daily high min	17.6 C (63.7 F)	1.2 C (2.2 F)	96 years	43 of 100 (Notable)
18 August 1997	Tomsk, RU	daily high min	17.0 C (62.6 F)	1.6 C (2.9 F)	98 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

1797 to 1997

Records set or tied on this calendar date in each year from 1797 to 1997. 1997 had 1,191 records.

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

Records on 08-18 in each year
Year	Records
1797	2
1805	1
1816	1
1827	1
1829	1
1830	1
1833	1
1841	1
1844	1
1845	3
1846	1
1847	1
1849	1
1851	1
1852	1
1853	1
1854	2
1855	1
1856	1
1861	1
1864	2
1866	1
1868	2
1869	1
1870	2
1872	1
1873	1
1875	3
1876	1
1878	1
1879	2
1883	3
1885	3
1886	3
1887	3
1888	2
1889	1
1890	1
1891	2
1892	6
1893	4
1894	4
1895	1
1898	4
1899	6
1900	2
1901	10
1902	8
1903	6
1904	8
1905	10
1906	40
1907	7
1908	21
1909	24
1910	16
1911	11
1912	21
1913	43
1914	37
1915	60
1916	71
1917	70
1918	53
1919	34
1920	51
1921	39
1922	129
1923	90
1924	225
1925	300
1926	168
1927	269
1928	141
1929	181
1930	150
1931	241
1932	382
1933	431
1934	638
1935	424
1936	766
1937	308
1938	243
1939	381
1940	434
1941	467
1942	333
1943	738
1944	325
1945	400
1946	416
1947	958
1948	315
1949	393
1950	683
1951	355
1952	405
1953	323
1954	622
1955	795
1956	580
1957	380
1958	580
1959	537
1960	599
1961	415
1962	428
1963	760
1964	443
1965	525
1966	573
1967	623
1968	795
1969	530
1970	597
1971	381
1972	493
1973	734
1974	639
1975	844
1976	917
1977	1,112
1978	854
1979	1,309
1980	771
1981	1,386
1982	563
1983	1,420
1984	600
1985	765
1986	861
1987	1,609
1988	1,351
1989	952
1990	920
1991	533
1992	1,497
1993	706
1994	1,027
1995	1,882
1996	760
1997	1,191
1998	923
1999	888
2000	1,183
2001	1,036
2002	1,306
2003	860
2004	1,050
2005	865
2006	842
2007	1,116
2008	1,265
2009	839
2010	1,167
2011	1,239
2012	1,247
2013	752
2014	751
2015	880
2016	704
2017	565
2018	462
2019	615
2020	1,541
2021	1,118
2022	1,237
2023	1,094
2024	696
2025	455
2026	545

Download the Data

Data for records on 1997-08-18: 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 10	800
10 to 20	35
20 to 30	7
30 to 40	4
40 to 50	4
50 to 60	3
60 to 70	2