Weather Records on 18 August 2001

1,036 weather records were set or tied worldwide on 18 August 2001. Highest significance: Hart 3 WSW, US.

Key Facts for 18 August 2001

On 18 August 2001, 1,036 weather records were set or tied at long-record stations worldwide.
682 were record highs and 127 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 34 monthly and 998 daily.
Hart 3 WSW set a daily record precipitation of 104.1 mm (4.1 in) on 18 August 2001.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 437 records.

Record Map

1,036 stations

1,036 station records on 18 August 2001 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 2001: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hart 3 WSW	United States	Record daily precipitation	104.1 mm (4.1 in)	70 of 100 (Major)
Waddamana Field Study Centre	Australia	Record daily precipitation	45.0 mm (1.8 in)	64 of 100 (Major)
Puntilla	United States	Record daily precipitation	51.3 mm (2.0 in)	63 of 100 (Major)
Steenbergen (Nb)	Netherlands	Record daily precipitation	55.4 mm (2.2 in)	54 of 100 (Notable)
Apsley (Parki)	Australia	Record daily precipitation	30.0 mm (1.2 in)	52 of 100 (Notable)
Leongatha Sth Gippsland Water	Australia	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Bothwell (Franklin Street)	Australia	Record daily precipitation	25.0 mm (1.0 in)	48 of 100 (Notable)
Osterley	Australia	Record daily precipitation	36.0 mm (1.4 in)	48 of 100 (Notable)
Den Helder-1	Netherlands	Record daily precipitation	29.8 mm (1.2 in)	48 of 100 (Notable)
Makkaur Fyr	Norway	Record daily precipitation	34.7 mm (1.4 in)	48 of 100 (Notable)
Fernandina Beach	United States	Record daily precipitation	114.3 mm (4.5 in)	48 of 100 (Notable)
Miena Dam	Australia	Record daily precipitation	26.0 mm (1.0 in)	46 of 100 (Notable)
Pjalica	Russia	Record daily precipitation	53.8 mm (2.1 in)	46 of 100 (Notable)
Brillion	United States	Record daily precipitation	49.5 mm (1.9 in)	46 of 100 (Notable)
Bothwell (Cluny)	Australia	Record daily precipitation	25.0 mm (1.0 in)	43 of 100 (Notable)
Tyler Pounds Fld	United States	Record low maximum temperature	26.1 C (79.0 F)	43 of 100 (Notable)
Zaandam (Hembrug)	Netherlands	Record daily precipitation	39.0 mm (1.5 in)	42 of 100 (Notable)
Delphi 2 N	United States	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Mocksville 5SE	United States	Record high minimum temperature	22.8 C (73.0 F)	42 of 100 (Notable)
Tooele	United States	Record high maximum temperature	38.9 C (102.0 F)	42 of 100 (Notable)
Santo Domingo	Mexico	Record high minimum temperature	30.0 C (86.0 F)	41 of 100 (Notable)
Logan Utah St UNIV	United States	Record high maximum temperature	35.0 C (95.0 F)	41 of 100 (Notable)
Brielle	Netherlands	Record daily precipitation	38.7 mm (1.5 in)	40 of 100 (Notable)
Den Bommel	Netherlands	Record daily precipitation	41.6 mm (1.6 in)	40 of 100 (Notable)
Schagen	Netherlands	Record daily precipitation	36.4 mm (1.4 in)	40 of 100 (Notable)
Albany 3 SE	United States	Record high minimum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
Glenns Ferry	United States	Record high maximum temperature	41.7 C (107.1 F)	40 of 100 (Notable)
Yulin	China	Record daily precipitation	102.9 mm (4.1 in)	39 of 100 (Notable)
Paso del Cuarenta I	Mexico	Record high minimum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Leiden	Netherlands	Record daily precipitation	47.4 mm (1.9 in)	38 of 100 (Notable)
Lawton	United States	Record daily precipitation	63.5 mm (2.5 in)	38 of 100 (Notable)
Arlington Six Flags	United States	Record daily precipitation	63.8 mm (2.5 in)	38 of 100 (Notable)
Cointzio	Mexico	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Rustefjelbma	Norway	Record daily precipitation	40.7 mm (1.6 in)	37 of 100 (Notable)
Stony Creek 2 N	United States	Record daily precipitation	63.2 mm (2.5 in)	37 of 100 (Notable)
Pope AFB	United States	Record daily precipitation	64.0 mm (2.5 in)	37 of 100 (Notable)
Oostvoorne	Netherlands	Record daily precipitation	28.8 mm (1.1 in)	36 of 100 (Notable)
Zmeinogorsk	Russia	Record high minimum temperature	20.4 C (68.7 F)	36 of 100 (Notable)
Newington	United States	Record daily precipitation	61.2 mm (2.4 in)	36 of 100 (Notable)
Moccasin Exp STN	United States	Record high minimum temperature	18.9 C (66.0 F)	36 of 100 (Notable)
Daingerfield 9 S	United States	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Cape Otway Lighthouse	Australia	Record daily precipitation	26.8 mm (1.1 in)	35 of 100 (Notable)
Numansdorp	Netherlands	Record daily precipitation	26.8 mm (1.1 in)	35 of 100 (Notable)
Austin #2	United States	Record high maximum temperature	35.0 C (95.0 F)	35 of 100 (Notable)
Heber	United States	Record high maximum temperature	36.7 C (98.1 F)	35 of 100 (Notable)
Xochitlan Todos Santos	Mexico	Record high maximum temperature	35.0 C (95.0 F)	34 of 100 (Routine)
Clifton	United States	Record low minimum temperature	12.8 C (55.0 F)	34 of 100 (Routine)
Red Lodge	United States	Record high maximum temperature	32.8 C (91.0 F)	34 of 100 (Routine)
Ballinger 2 NW	United States	Record low maximum temperature	26.7 C (80.1 F)	34 of 100 (Routine)
Dekalb	United States	Record daily precipitation	48.5 mm (1.9 in)	34 of 100 (Routine)
Paducah 15S	United States	Record daily precipitation	37.1 mm (1.5 in)	34 of 100 (Routine)
Anchorage Merrill Fld	United States	Record high minimum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Cincinnati/Northern Kentucky I	United States	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Glenorchy (Glenorchy Reservoir	Australia	Record daily precipitation	30.6 mm (1.2 in)	33 of 100 (Routine)
Queenstown (Copper Mine)	Australia	Record daily precipitation	50.4 mm (2.0 in)	33 of 100 (Routine)
Union de Tula	Mexico	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Whitestown	United States	Record low maximum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Scheveningen	Netherlands	Record daily precipitation	37.1 mm (1.5 in)	32 of 100 (Routine)
Ijsselmonde	Netherlands	Record daily precipitation	30.4 mm (1.2 in)	32 of 100 (Routine)
Holter Dam	United States	Record high maximum temperature	37.2 C (99.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

1,036 records

Records set or tied on 18 August 2001 by type: Highest daily maximum 332, Lowest daily maximum 51, Highest daily minimum 350, Lowest daily minimum 76, Heaviest daily rainfall 227.

Records on 18 August 2001 by type
Record type	Records
Highest daily maximum	332
Lowest daily maximum	51
Highest daily minimum	350
Lowest daily minimum	76
Heaviest daily rainfall	227
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 2001 by timescale: all-time 4, monthly 34, daily 998.

How Much Records Were Beaten By

754 broken records

Margins by which the 754 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.7. Ties are not counted.

Top 20 by Significance

18 August 2001

Top 20 records on 18 August 2001 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 2001	Hart 3 WSW, US	daily rain	104.1 mm (4.1 in)	78.7 mm (3.1 in)	67 years	70 of 100 (Major)
18 August 2001	Waddamana Field Study Centre, AU	daily rain	45.0 mm (1.8 in)	25.7 mm (1.0 in)	59 years	64 of 100 (Major)
18 August 2001	Puntilla, US	daily rain	51.3 mm (2.0 in)	34.3 mm (1.4 in)	59 years	63 of 100 (Major)
18 August 2001	Steenbergen (Nb), NL	daily rain	55.4 mm (2.2 in)	35.6 mm (1.4 in)	32 years	54 of 100 (Notable)
18 August 2001	Apsley (Parki), AU	daily rain	30.0 mm (1.2 in)	14.5 mm (0.6 in)	59 years	52 of 100 (Notable)
18 August 2001	Leongatha Sth Gippsland Water, AU	daily rain	25.4 mm (1.0 in)	9.1 mm (0.36 in)	80 years	49 of 100 (Notable)
18 August 2001	Bothwell (Franklin Street), AU	daily rain	25.0 mm (1.0 in)	10.3 mm (0.4 in)	59 years	48 of 100 (Notable)
18 August 2001	Osterley, AU	daily rain	36.0 mm (1.4 in)	12.9 mm (0.5 in)	59 years	48 of 100 (Notable)
18 August 2001	Den Helder-1, NL	daily rain	29.8 mm (1.2 in)	5.5 mm (0.22 in)	129 years	48 of 100 (Notable)
18 August 2001	Makkaur Fyr, NO	daily rain	34.7 mm (1.4 in)	20.2 mm (0.8 in)	20 years	48 of 100 (Notable)
18 August 2001	Fernandina Beach, US	daily rain	114.3 mm (4.5 in)	46.2 mm (1.8 in)	56 years	48 of 100 (Notable)
18 August 2001	Miena Dam, AU	daily rain	26.0 mm (1.0 in)	7.5 mm (0.30 in)	76 years	46 of 100 (Notable)
18 August 2001	Pjalica, RU	daily rain	53.8 mm (2.1 in)	42.9 mm (1.7 in)	2 years	46 of 100 (Notable)
18 August 2001	Brillion, US	daily rain	49.5 mm (1.9 in)	23.6 mm (0.9 in)	60 years	46 of 100 (Notable)
18 August 2001	Bothwell (Cluny), AU	daily rain	25.0 mm (1.0 in)	9.5 mm (0.37 in)	59 years	43 of 100 (Notable)
18 August 2001	Tyler Pounds Fld, US	daily low max	26.1 C (79.0 F)	1.1 C (2.0 F)	113 years	43 of 100 (Notable)
18 August 2001	Zaandam (Hembrug), NL	daily rain	39.0 mm (1.5 in)	18.0 mm (0.7 in)	36 years	42 of 100 (Notable)
18 August 2001	Delphi 2 N, US	daily rain	25.9 mm (1.0 in)	3.3 mm (0.13 in)	100 years	42 of 100 (Notable)
18 August 2001	Mocksville 5SE, US	daily high min	22.8 C (73.0 F)	0.6 C (1.1 F)	106 years	42 of 100 (Notable)
18 August 2001	Tooele, US	daily high max	38.9 C (102.0 F)	1.7 C (3.1 F)	90 years	42 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 2001

Records set or tied on this calendar date in each year from 1797 to 2001. 2001 had 1,036 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 2001-08-18: 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 2026-10-16 (16 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	690
10 to 20	38
20 to 30	10
30 to 40	9
40 to 50	6
50 to 60	0
60 to 70	0
70 to 80	1