Weather Records on 17 August 2004

1,046 weather records were set or tied worldwide on 17 August 2004. Highest significance: Kolsva, SE.

Key Facts for 17 August 2004

On 17 August 2004, 1,046 weather records were set or tied at long-record stations worldwide.
345 were record highs and 522 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 29 monthly and 1,013 daily.
Kolsva set a daily record precipitation of 44.7 mm (1.8 in) on 17 August 2004.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 470 records.

Record Map

1,046 stations

1,046 station records on 17 August 2004 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 2004: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kolsva	Sweden	Record daily precipitation	44.7 mm (1.8 in)	56 of 100 (Notable)
Kenai AP	United States	Record high maximum temperature	27.8 C (82.0 F)	56 of 100 (Notable)
Bosque del Apache	United States	Record daily precipitation	27.2 mm (1.1 in)	54 of 100 (Notable)
Hanko Russaro	Finland	Record daily precipitation	47.1 mm (1.9 in)	52 of 100 (Notable)
Danevang 1 W	United States	Record low minimum temperature	17.2 C (63.0 F)	52 of 100 (Notable)
Moorcroft 3S	United States	Record low minimum temperature	-3.3 C (26.1 F)	50 of 100 (Notable)
Leitchfield 2 N	United States	Record low minimum temperature	8.9 C (48.0 F)	48 of 100 (Notable)
E Glacier	United States	Record daily precipitation	49.5 mm (1.9 in)	48 of 100 (Notable)
Skagway	United States	Record high maximum temperature	32.8 C (91.0 F)	48 of 100 (Notable)
Gullspang	Sweden	Record daily precipitation	37.0 mm (1.5 in)	47 of 100 (Notable)
Bolivar Wtr Wks	United States	Record low minimum temperature	11.1 C (52.0 F)	47 of 100 (Notable)
Elephant Butte Dam	United States	Record low maximum temperature	20.6 C (69.1 F)	46 of 100 (Notable)
Mt Adams Rs	United States	Record high minimum temperature	18.3 C (64.9 F)	46 of 100 (Notable)
Anchorage Merrill Fld	United States	Record high maximum temperature	27.8 C (82.0 F)	46 of 100 (Notable)
Chewelah	United States	Record daily precipitation	48.3 mm (1.9 in)	45 of 100 (Notable)
San Marcos	Mexico	Record low minimum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Tangancicuaro	Mexico	Record high maximum temperature	35.6 C (96.1 F)	44 of 100 (Notable)
Ft Grant	United States	Record high maximum temperature	37.8 C (100.0 F)	44 of 100 (Notable)
Ola	United States	Record high minimum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
Sparta 1 W	United States	Record low minimum temperature	8.3 C (46.9 F)	44 of 100 (Notable)
Bosque del Apache	United States	Record low maximum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Hohenwald	United States	Record low maximum temperature	25.6 C (78.1 F)	43 of 100 (Notable)
El Campo	United States	Record low minimum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Kennewick	United States	Record high minimum temperature	22.2 C (72.0 F)	43 of 100 (Notable)
Lake Arthur 7 SW	United States	Record low minimum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Corinth 5 WSW	United States	Record low maximum temperature	26.7 C (80.1 F)	42 of 100 (Notable)
Waynesboro 2 W	United States	Record low minimum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Stevensville	United States	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Sewanee	United States	Record low minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Porto	Portugal	Record daily precipitation	32.9 mm (1.3 in)	41 of 100 (Notable)
Springbok	South Africa	Record daily precipitation	33.3 mm (1.3 in)	41 of 100 (Notable)
Tombstone	United States	Record low maximum temperature	25.6 C (78.1 F)	41 of 100 (Notable)
Warren	United States	Record high minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Effingham 3SW	United States	Record low minimum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Hebgen Dam	United States	Record daily precipitation	30.5 mm (1.2 in)	41 of 100 (Notable)
Manti	United States	Record low maximum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Tancochapa	Mexico	Record daily precipitation	164.3 mm (6.5 in)	40 of 100 (Notable)
Windsor	United States	Record low minimum temperature	8.3 C (46.9 F)	40 of 100 (Notable)
Hattiesburg 5SW	United States	Record low minimum temperature	14.4 C (57.9 F)	40 of 100 (Notable)
Boerne	United States	Record low minimum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
Goldendale	United States	Record high minimum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Topo Chico	Mexico	Record low minimum temperature	12.8 C (55.0 F)	39 of 100 (Notable)
San Ildelfonso Villa Alta	Mexico	Record low minimum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Kingman	United States	Record daily precipitation	48.8 mm (1.9 in)	39 of 100 (Notable)
Greenville	United States	Record low minimum temperature	13.3 C (55.9 F)	39 of 100 (Notable)
Picayune	United States	Record low minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Savannah 6 SW	United States	Record low minimum temperature	8.9 C (48.0 F)	39 of 100 (Notable)
Ft Davis	United States	Record daily precipitation	29.2 mm (1.1 in)	39 of 100 (Notable)
Garden Valley	United States	Record high minimum temperature	16.1 C (61.0 F)	38 of 100 (Notable)
Greencastle 1 W	United States	Record low minimum temperature	7.8 C (46.0 F)	38 of 100 (Notable)
Saint Ignatius	United States	Record high minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Hatton 9 SE	United States	Record high minimum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Leavenworth 3 S	United States	Record high minimum temperature	18.3 C (64.9 F)	38 of 100 (Notable)
Stanley	United States	Record high minimum temperature	9.4 C (48.9 F)	37 of 100 (Notable)
Meadville	United States	Record low minimum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Carrizozo 1SW	United States	Record low maximum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Deming	United States	Record low maximum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Cle Elum	United States	Record high minimum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Matanuska Exp Farm	United States	Record high maximum temperature	28.9 C (84.0 F)	37 of 100 (Notable)
Corpus Christi NAS	United States	Record low minimum temperature	21.1 C (70.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

1,046 records

Records set or tied on 17 August 2004 by type: Highest daily maximum 115, Lowest daily maximum 165, Highest daily minimum 230, Lowest daily minimum 357, Heaviest daily rainfall 179.

Records on 17 August 2004 by type
Record type	Records
Highest daily maximum	115
Lowest daily maximum	165
Highest daily minimum	230
Lowest daily minimum	357
Heaviest daily rainfall	179
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 2004 by timescale: all-time 4, monthly 29, daily 1,013.

How Much Records Were Beaten By

778 broken records

Margins by which the 778 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 36.8. Ties are not counted.

Top 20 by Significance

17 August 2004

Top 20 records on 17 August 2004 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 2004	Kolsva, SE	daily rain	44.7 mm (1.8 in)	30.5 mm (1.2 in)	36 years	56 of 100 (Notable)
17 August 2004	Kenai AP, US	daily high max	27.8 C (82.0 F)	5.0 C (9.0 F)	99 years	56 of 100 (Notable)
17 August 2004	Bosque del Apache, US	daily rain	27.2 mm (1.1 in)	18.8 mm (0.7 in)	71 years	54 of 100 (Notable)
17 August 2004	Hanko Russaro, FI	daily rain	47.1 mm (1.9 in)	35.2 mm (1.4 in)	29 years	52 of 100 (Notable)
17 August 2004	Danevang 1 W, US	daily low min	17.2 C (63.0 F)	2.8 C (5.0 F)	73 years	52 of 100 (Notable)
17 August 2004	Moorcroft 3S, US	monthly low min	-3.3 C (26.1 F)	1.1 C (2.0 F)	93 years	50 of 100 (Notable)
17 August 2004	Leitchfield 2 N, US	daily low min	8.9 C (48.0 F)	2.8 C (5.0 F)	106 years	48 of 100 (Notable)
17 August 2004	E Glacier, US	daily rain	49.5 mm (1.9 in)	36.3 mm (1.4 in)	11 years	48 of 100 (Notable)
17 August 2004	Skagway, US	daily high max	32.8 C (91.0 F)	5.0 C (9.0 F)	81 years	48 of 100 (Notable)
17 August 2004	Gullspang, SE	daily rain	37.0 mm (1.5 in)	19.0 mm (0.7 in)	59 years	47 of 100 (Notable)
17 August 2004	Bolivar Wtr Wks, US	daily low min	11.1 C (52.0 F)	2.2 C (4.0 F)	106 years	47 of 100 (Notable)
17 August 2004	Elephant Butte Dam, US	daily low max	20.6 C (69.1 F)	5.0 C (9.0 F)	73 years	46 of 100 (Notable)
17 August 2004	Mt Adams Rs, US	daily high min	18.3 C (64.9 F)	5.5 C (9.9 F)	78 years	46 of 100 (Notable)
17 August 2004	Anchorage Merrill Fld, US	daily high max	27.8 C (82.0 F)	5.6 C (10.1 F)	60 years	46 of 100 (Notable)
17 August 2004	Chewelah, US	monthly rain	48.3 mm (1.9 in)	11.7 mm (0.5 in)	23 years	45 of 100 (Notable)
17 August 2004	San Marcos, MX	daily low min	15.6 C (60.1 F)	4.4 C (7.9 F)	18 years	44 of 100 (Notable)
17 August 2004	Tangancicuaro, MX	daily high max	35.6 C (96.1 F)	5.0 C (9.0 F)	47 years	44 of 100 (Notable)
17 August 2004	Ft Grant, US	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	101 years	44 of 100 (Notable)
17 August 2004	Ola, US	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	103 years	44 of 100 (Notable)
17 August 2004	Sparta 1 W, US	daily low min	8.3 C (46.9 F)	1.7 C (3.1 F)	106 years	44 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 2004

Records set or tied on this calendar date in each year from 1797 to 2004. 2004 had 1,046 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 2004-08-17: 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 5	683
5 to 10	59
10 to 15	15
15 to 20	8
20 to 25	3
25 to 30	5
30 to 35	2
35 to 40	3