Weather Records on 18 August 2008

1,265 weather records were set or tied worldwide on 18 August 2008. Highest significance: Pitea, SE.

Key Facts for 18 August 2008

On 18 August 2008, 1,265 weather records were set or tied at long-record stations worldwide.
589 were record highs and 412 were record lows, counting maximum and minimum temperature.
By timescale, 9 were all-time records, 35 monthly and 1,221 daily.
Pitea set a daily record precipitation of 74.0 mm (2.9 in) on 18 August 2008.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 436 records.

Record Map

1,265 stations

1,265 station records on 18 August 2008 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 2008: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pitea	Sweden	Record daily precipitation	74.0 mm (2.9 in)	80 of 100 (Exceptional)
Rio Grande City	United States	Record daily precipitation	76.2 mm (3.0 in)	67 of 100 (Major)
Graham	United States	Record daily precipitation	87.6 mm (3.4 in)	62 of 100 (Major)
Salida	United States	Record low maximum temperature	17.2 C (63.0 F)	57 of 100 (Notable)
Folkston 9 SW	United States	Record daily precipitation	114.8 mm (4.5 in)	57 of 100 (Notable)
Richfield	United States	Record daily precipitation	60.2 mm (2.4 in)	56 of 100 (Notable)
Chattanooga	United States	Record daily precipitation	101.1 mm (4.0 in)	56 of 100 (Notable)
Waco Rgnl AP	United States	Record daily precipitation	88.4 mm (3.5 in)	56 of 100 (Notable)
Tuxcueca	Mexico	Record daily precipitation	59.9 mm (2.4 in)	52 of 100 (Notable)
La Quemada	Mexico	Record daily precipitation	80.8 mm (3.2 in)	51 of 100 (Notable)
San Tiburcio (Dge)	Mexico	Record daily precipitation	57.9 mm (2.3 in)	50 of 100 (Notable)
Puottaure	Sweden	Record daily precipitation	41.7 mm (1.6 in)	50 of 100 (Notable)
Jiquipilco	Mexico	Record daily precipitation	84.8 mm (3.3 in)	49 of 100 (Notable)
Dos Patrias	Mexico	Record low maximum temperature	25.6 C (78.1 F)	48 of 100 (Notable)
Rosebud	United States	Record daily precipitation	68.6 mm (2.7 in)	48 of 100 (Notable)
McAllen Miller Intl AP	United States	Record daily precipitation	136.9 mm (5.4 in)	48 of 100 (Notable)
Sym	Russia	Record daily precipitation	38.1 mm (1.5 in)	47 of 100 (Notable)
Kamennaja-Step	Russia	Record high minimum temperature	25.4 C (77.7 F)	47 of 100 (Notable)
Grycksbo_D	Sweden	Record daily precipitation	31.6 mm (1.2 in)	47 of 100 (Notable)
Walters	United States	Record daily precipitation	133.4 mm (5.3 in)	47 of 100 (Notable)
Hallettsville 2 N	United States	Record low maximum temperature	26.7 C (80.1 F)	47 of 100 (Notable)
Lipscomb	United States	Record daily precipitation	114.8 mm (4.5 in)	47 of 100 (Notable)
Asientos	Mexico	Record daily precipitation	79.8 mm (3.1 in)	46 of 100 (Notable)
La Marquesa	Mexico	Record daily precipitation	80.8 mm (3.2 in)	46 of 100 (Notable)
Teojomulco	Mexico	Record daily precipitation	117.9 mm (4.6 in)	46 of 100 (Notable)
Boise City 2 E	United States	Record low maximum temperature	19.4 C (66.9 F)	46 of 100 (Notable)
Mineral Wells AP	United States	Record daily precipitation	50.3 mm (2.0 in)	46 of 100 (Notable)
Quito	Mexico	Record high maximum temperature	35.6 C (96.1 F)	45 of 100 (Notable)
Canon City	United States	Record low maximum temperature	20.0 C (68.0 F)	45 of 100 (Notable)
Guymon	United States	Record daily precipitation	95.5 mm (3.8 in)	45 of 100 (Notable)
Luling	United States	Record low maximum temperature	26.1 C (79.0 F)	45 of 100 (Notable)
Haskell	United States	Record low maximum temperature	23.3 C (73.9 F)	44 of 100 (Notable)
Te Kowai Exp STN	Australia	Record low maximum temperature	19.0 C (66.2 F)	43 of 100 (Notable)
Suomussalmi Naljanka	Finland	Record daily precipitation	42.2 mm (1.7 in)	43 of 100 (Notable)
Niznij Novgorod	Russia	Record high minimum temperature	20.6 C (69.1 F)	43 of 100 (Notable)
Kazan	Russia	Record high minimum temperature	20.2 C (68.4 F)	43 of 100 (Notable)
Holly	United States	Record daily precipitation	42.4 mm (1.7 in)	43 of 100 (Notable)
Mancos 1SW	United States	Record low minimum temperature	5.6 C (42.1 F)	43 of 100 (Notable)
Menard	United States	Record low maximum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
San Juan Acazuchitlan	Mexico	Record daily precipitation	64.8 mm (2.6 in)	42 of 100 (Notable)
St. Petersburg	Russia	Record high minimum temperature	18.8 C (65.8 F)	42 of 100 (Notable)
Walsenburg 1 NW	United States	Record low maximum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Bonneville Dam	United States	Record high minimum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Dufur	United States	Record high minimum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Pendleton Dwtn	United States	Record high maximum temperature	42.2 C (108.0 F)	42 of 100 (Notable)
Carthage	United States	Record low minimum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
Burkett	United States	Record daily precipitation	95.3 mm (3.8 in)	42 of 100 (Notable)
Dublin 2SE	United States	Record daily precipitation	36.6 mm (1.4 in)	42 of 100 (Notable)
Yorktown	United States	Record daily precipitation	76.2 mm (3.0 in)	42 of 100 (Notable)
Palmer 3 ESE	United States	Record high minimum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Snoqualmie Falls	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Suomussalmi Haapovaara	Finland	Record daily precipitation	34.7 mm (1.4 in)	41 of 100 (Notable)
Villa Victoria (Dge)	Mexico	Record daily precipitation	53.8 mm (2.1 in)	41 of 100 (Notable)
El Huizache	Mexico	Record daily precipitation	45.0 mm (1.8 in)	41 of 100 (Notable)
Kremmling	United States	Record low maximum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Moscow U of I	United States	Record high maximum temperature	37.2 C (99.0 F)	41 of 100 (Notable)
Tower 2S	United States	Record high maximum temperature	31.7 C (89.1 F)	41 of 100 (Notable)
Portales	United States	Record daily precipitation	33.5 mm (1.3 in)	41 of 100 (Notable)
Roy	United States	Record low maximum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Buffalo 2 SSW	United States	Record low maximum temperature	22.8 C (73.0 F)	41 of 100 (Notable)

Counts by Type and Timescale

1,265 records

Records set or tied on 18 August 2008 by type: Highest daily maximum 262, Lowest daily maximum 291, Highest daily minimum 327, Lowest daily minimum 121, Heaviest daily rainfall 264.

Records on 18 August 2008 by type
Record type	Records
Highest daily maximum	262
Lowest daily maximum	291
Highest daily minimum	327
Lowest daily minimum	121
Heaviest daily rainfall	264
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 2008 by timescale: all-time 9, monthly 35, daily 1,221.

How Much Records Were Beaten By

965 broken records

Margins by which the 965 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 73.7. Ties are not counted.

Top 20 by Significance

18 August 2008

Top 20 records on 18 August 2008 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 2008	Pitea, SE	daily rain	74.0 mm (2.9 in)	36.9 mm (1.5 in)	108 years	80 of 100 (Exceptional)
18 August 2008	Rio Grande City, US	daily rain	76.2 mm (3.0 in)	40.6 mm (1.6 in)	105 years	67 of 100 (Major)
18 August 2008	Graham, US	daily rain	87.6 mm (3.4 in)	41.9 mm (1.6 in)	82 years	62 of 100 (Major)
18 August 2008	Salida, US	daily low max	17.2 C (63.0 F)	5.0 C (9.0 F)	100 years	57 of 100 (Notable)
18 August 2008	Folkston 9 SW, US	daily rain	114.8 mm (4.5 in)	65.3 mm (2.6 in)	63 years	57 of 100 (Notable)
18 August 2008	Richfield, US	daily rain	60.2 mm (2.4 in)	39.9 mm (1.6 in)	59 years	56 of 100 (Notable)
18 August 2008	Chattanooga, US	daily rain	101.1 mm (4.0 in)	46.7 mm (1.8 in)	55 years	56 of 100 (Notable)
18 August 2008	Waco Rgnl AP, US	daily rain	88.4 mm (3.5 in)	48.3 mm (1.9 in)	50 years	56 of 100 (Notable)
18 August 2008	Tuxcueca, MX	daily rain	59.9 mm (2.4 in)	32.0 mm (1.3 in)	50 years	52 of 100 (Notable)
18 August 2008	La Quemada, MX	daily rain	80.8 mm (3.2 in)	55.9 mm (2.2 in)	28 years	51 of 100 (Notable)
18 August 2008	San Tiburcio (Dge), MX	daily rain	57.9 mm (2.3 in)	47.0 mm (1.9 in)	25 years	50 of 100 (Notable)
18 August 2008	Puottaure, SE	daily rain	41.7 mm (1.6 in)	14.5 mm (0.6 in)	83 years	50 of 100 (Notable)
18 August 2008	Jiquipilco, MX	daily rain	84.8 mm (3.3 in)	51.0 mm (2.0 in)	19 years	49 of 100 (Notable)
18 August 2008	Dos Patrias, MX	daily low max	25.6 C (78.1 F)	4.4 C (7.9 F)	56 years	48 of 100 (Notable)
18 August 2008	Rosebud, US	daily rain	68.6 mm (2.7 in)	62.8 mm (2.5 in)	41 years	48 of 100 (Notable)
18 August 2008	McAllen Miller Intl AP, US	daily rain	136.9 mm (5.4 in)	73.7 mm (2.9 in)	32 years	48 of 100 (Notable)
18 August 2008	Sym, RU	daily rain	38.1 mm (1.5 in)	23.1 mm (0.9 in)	18 years	47 of 100 (Notable)
18 August 2008	Kamennaja-Step, RU	all-time high min	25.4 C (77.7 F)	0.6 C (1.1 F)	54 years	47 of 100 (Notable)
18 August 2008	Grycksbo_D, SE	daily rain	31.6 mm (1.2 in)	17.1 mm (0.7 in)	63 years	47 of 100 (Notable)
18 August 2008	Walters, US	monthly rain	133.4 mm (5.3 in)	26.5 mm (1.0 in)	41 years	47 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 2008

Records set or tied on this calendar date in each year from 1797 to 2008. 2008 had 1,265 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 2008-08-18: 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	840
10 to 20	55
20 to 30	33
30 to 40	16
40 to 50	11
50 to 60	6
60 to 70	3
70 to 80	1