Weather Records on 15 September 2004

893 weather records were set or tied worldwide on 15 September 2004. Highest significance: Primghar, US.

Key Facts for 15 September 2004

On 15 September 2004, 893 weather records were set or tied at long-record stations worldwide.
441 were record highs and 122 were record lows, counting maximum and minimum temperature.
By timescale, 11 were all-time records, 55 monthly and 827 daily.
Primghar set a monthly record daily precipitation of 170.2 mm (6.7 in) on 15 September 2004.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 410 records.

Record Map

893 stations

893 station records on 15 September 2004 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 2004: highest significance records shown on the map
Station	Country	Type	Value	Significance
Primghar	United States	Record daily precipitation	170.2 mm (6.7 in)	90 of 100 (Exceptional)
Albert Lea 3SE	United States	Record daily precipitation	177.0 mm (7.0 in)	71 of 100 (Major)
Fairmont	United States	Record daily precipitation	157.5 mm (6.2 in)	71 of 100 (Major)
Grand Meadow	United States	Record daily precipitation	182.9 mm (7.2 in)	71 of 100 (Major)
Northwood	United States	Record daily precipitation	133.1 mm (5.2 in)	70 of 100 (Major)
Swea City 5N	United States	Record daily precipitation	173.2 mm (6.8 in)	68 of 100 (Major)
Rock Rapids	United States	Record daily precipitation	95.0 mm (3.7 in)	67 of 100 (Major)
Milford 4 NW	United States	Record daily precipitation	151.1 mm (5.9 in)	66 of 100 (Major)
Hatfield	United States	Record daily precipitation	67.3 mm (2.6 in)	66 of 100 (Major)
Tyndall	United States	Record daily precipitation	60.7 mm (2.4 in)	64 of 100 (Major)
Trempealeau Dam 6	United States	Record daily precipitation	111.8 mm (4.4 in)	64 of 100 (Major)
Winona	United States	Record daily precipitation	74.4 mm (2.9 in)	63 of 100 (Major)
Blair	United States	Record daily precipitation	86.4 mm (3.4 in)	63 of 100 (Major)
Winona Dam 5 A	United States	Record daily precipitation	126.5 mm (5.0 in)	62 of 100 (Major)
Emmetsburg	United States	Record daily precipitation	146.1 mm (5.8 in)	60 of 100 (Major)
Sheldon	United States	Record daily precipitation	78.7 mm (3.1 in)	59 of 100 (Notable)
Saint Francis	United States	Record daily precipitation	49.5 mm (1.9 in)	59 of 100 (Notable)
Hastings Dam 2	United States	Record daily precipitation	58.4 mm (2.3 in)	59 of 100 (Notable)
Le Mars	United States	Record daily precipitation	103.1 mm (4.1 in)	58 of 100 (Notable)
Winnebago	United States	Record daily precipitation	123.4 mm (4.9 in)	57 of 100 (Notable)
Glenwood 2WNW	United States	Record daily precipitation	43.4 mm (1.7 in)	56 of 100 (Notable)
Harmony	United States	Record daily precipitation	89.2 mm (3.5 in)	56 of 100 (Notable)
Dodge	United States	Record daily precipitation	85.9 mm (3.4 in)	56 of 100 (Notable)
Preston	United States	Record daily precipitation	101.3 mm (4.0 in)	55 of 100 (Notable)
Adjuntas 2 NW	Puerto Rico [United States]	Record daily precipitation	201.9 mm (7.9 in)	54 of 100 (Notable)
Paraiso	Puerto Rico [United States]	Record daily precipitation	228.6 mm (9.0 in)	54 of 100 (Notable)
Galesburg	United States	Record daily precipitation	51.1 mm (2.0 in)	54 of 100 (Notable)
Cass Lake	United States	Record daily precipitation	52.6 mm (2.1 in)	54 of 100 (Notable)
New Ulm 2 SE	United States	Record daily precipitation	60.5 mm (2.4 in)	54 of 100 (Notable)
Rosemount Rsch & Outreach Ctr	United States	Record daily precipitation	66.8 mm (2.6 in)	54 of 100 (Notable)
Cherokee	United States	Record daily precipitation	120.9 mm (4.8 in)	53 of 100 (Notable)
Harrisburg 12WNW	United States	Record daily precipitation	48.5 mm (1.9 in)	53 of 100 (Notable)
Orlando Executive AP	United States	Record high minimum temperature	26.1 C (79.0 F)	53 of 100 (Notable)
Estherville 4E	United States	Record daily precipitation	163.8 mm (6.4 in)	52 of 100 (Notable)
Lake Park 3SSE	United States	Record daily precipitation	162.6 mm (6.4 in)	52 of 100 (Notable)
Ilmajoki Hiiripelto	Finland	Record daily precipitation	44.9 mm (1.8 in)	51 of 100 (Notable)
Titonka	United States	Record daily precipitation	106.7 mm (4.2 in)	51 of 100 (Notable)
Elgin 2SSW	United States	Record daily precipitation	91.9 mm (3.6 in)	51 of 100 (Notable)
Mondovi	United States	Record daily precipitation	70.9 mm (2.8 in)	51 of 100 (Notable)
Montgomery	United States	Record daily precipitation	55.9 mm (2.2 in)	50 of 100 (Notable)
Wabasha	United States	Record daily precipitation	76.2 mm (3.0 in)	50 of 100 (Notable)
Lanesboro	United States	Record daily precipitation	106.7 mm (4.2 in)	49 of 100 (Notable)
Theilman 1SSW	United States	Record daily precipitation	85.6 mm (3.4 in)	49 of 100 (Notable)
Alma Dam 4	United States	Record daily precipitation	91.2 mm (3.6 in)	49 of 100 (Notable)
Ylikiiminki Nuoritta	Finland	Record daily precipitation	25.0 mm (1.0 in)	48 of 100 (Notable)
Leting	China	Record daily precipitation	57.4 mm (2.3 in)	47 of 100 (Notable)
Suchil	Mexico	Record daily precipitation	78.5 mm (3.1 in)	47 of 100 (Notable)
Rio Blanco Lower	Puerto Rico [United States]	Record daily precipitation	175.3 mm (6.9 in)	47 of 100 (Notable)
Lake City	United States	Record daily precipitation	67.1 mm (2.6 in)	47 of 100 (Notable)
Walker	United States	Record daily precipitation	63.5 mm (2.5 in)	47 of 100 (Notable)
Zumbrota	United States	Record daily precipitation	99.6 mm (3.9 in)	47 of 100 (Notable)
Duolun	China	Record daily precipitation	34.8 mm (1.4 in)	46 of 100 (Notable)
Kjahta	Russia	Record daily precipitation	40.4 mm (1.6 in)	46 of 100 (Notable)
Federal Pt	United States	Record high minimum temperature	25.0 C (77.0 F)	46 of 100 (Notable)
Detour Village	United States	Record high minimum temperature	18.3 C (64.9 F)	46 of 100 (Notable)
Gann Valley 4NW	United States	Record daily precipitation	45.2 mm (1.8 in)	46 of 100 (Notable)
Menomonie	United States	Record daily precipitation	61.2 mm (2.4 in)	46 of 100 (Notable)
River Falls	United States	Record daily precipitation	55.6 mm (2.2 in)	46 of 100 (Notable)
Stanley Wwtp	United States	Record daily precipitation	52.3 mm (2.1 in)	46 of 100 (Notable)
Spencer 1 N	United States	Record daily precipitation	64.8 mm (2.6 in)	45 of 100 (Notable)

Counts by Type and Timescale

893 records

Records set or tied on 15 September 2004 by type: Highest daily maximum 218, Lowest daily maximum 49, Highest daily minimum 223, Lowest daily minimum 73, Heaviest daily rainfall 328, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 15 September 2004 by type
Record type	Records
Highest daily maximum	218
Lowest daily maximum	49
Highest daily minimum	223
Lowest daily minimum	73
Heaviest daily rainfall	328
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 15 September 2004 by timescale: all-time 11, monthly 55, daily 827.

How Much Records Were Beaten By

663 broken records

Margins by which the 663 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 160.5. Ties are not counted.

Top 20 by Significance

15 September 2004

Top 20 records on 15 September 2004 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 2004	Primghar, US	monthly rain	170.2 mm (6.7 in)	57.2 mm (2.3 in)	104 years	90 of 100 (Exceptional)
15 September 2004	Albert Lea 3SE, US	daily rain	177.0 mm (7.0 in)	144.2 mm (5.7 in)	71 years	71 of 100 (Major)
15 September 2004	Fairmont, US	all-time rain	157.5 mm (6.2 in)	35.8 mm (1.4 in)	41 years	71 of 100 (Major)
15 September 2004	Grand Meadow, US	all-time rain	182.9 mm (7.2 in)	20.1 mm (0.8 in)	93 years	71 of 100 (Major)
15 September 2004	Northwood, US	daily rain	133.1 mm (5.2 in)	84.8 mm (3.3 in)	68 years	70 of 100 (Major)
15 September 2004	Swea City 5N, US	all-time rain	173.2 mm (6.8 in)	58.9 mm (2.3 in)	11 years	68 of 100 (Major)
15 September 2004	Rock Rapids, US	daily rain	95.0 mm (3.7 in)	51.8 mm (2.0 in)	68 years	67 of 100 (Major)
15 September 2004	Milford 4 NW, US	monthly rain	151.1 mm (5.9 in)	49.5 mm (1.9 in)	40 years	66 of 100 (Major)
15 September 2004	Hatfield, US	daily rain	67.3 mm (2.6 in)	41.4 mm (1.6 in)	83 years	66 of 100 (Major)
15 September 2004	Tyndall, US	daily rain	60.7 mm (2.4 in)	35.8 mm (1.4 in)	80 years	64 of 100 (Major)
15 September 2004	Trempealeau Dam 6, US	daily rain	111.8 mm (4.4 in)	64.6 mm (2.5 in)	63 years	64 of 100 (Major)
15 September 2004	Winona, US	daily rain	74.4 mm (2.9 in)	37.6 mm (1.5 in)	83 years	63 of 100 (Major)
15 September 2004	Blair, US	daily rain	86.4 mm (3.4 in)	53.1 mm (2.1 in)	73 years	63 of 100 (Major)
15 September 2004	Winona Dam 5 A, US	monthly rain	126.5 mm (5.0 in)	39.9 mm (1.6 in)	38 years	62 of 100 (Major)
15 September 2004	Emmetsburg, US	daily rain	146.1 mm (5.8 in)	127.0 mm (5.0 in)	34 years	60 of 100 (Major)
15 September 2004	Sheldon, US	daily rain	78.7 mm (3.1 in)	38.6 mm (1.5 in)	68 years	59 of 100 (Notable)
15 September 2004	Saint Francis, US	daily rain	49.5 mm (1.9 in)	24.6 mm (1.0 in)	87 years	59 of 100 (Notable)
15 September 2004	Hastings Dam 2, US	daily rain	58.4 mm (2.3 in)	38.6 mm (1.5 in)	62 years	59 of 100 (Notable)
15 September 2004	Le Mars, US	daily rain	103.1 mm (4.1 in)	44.7 mm (1.8 in)	63 years	58 of 100 (Notable)
15 September 2004	Winnebago, US	monthly rain	123.4 mm (4.9 in)	18.0 mm (0.7 in)	78 years	57 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 893 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 2004-09-15: 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 25	596
25 to 50	45
50 to 75	13
75 to 100	4
100 to 125	0
125 to 150	3
150 to 175	2