Weather Records on 20 September 2004

1,156 weather records were set or tied worldwide on 20 September 2004. Highest significance: Grahamstown (Hunter Water Boar, AU.

Key Facts for 20 September 2004

On 20 September 2004, 1,156 weather records were set or tied at long-record stations worldwide.
466 were record highs and 331 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 31 monthly and 1,123 daily.
Grahamstown (Hunter Water Boar set a monthly record daily precipitation of 89.6 mm (3.5 in) on 20 September 2004.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 438 records.

Record Map

1,156 stations

1,156 station records on 20 September 2004 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 2004: highest significance records shown on the map
Station	Country	Type	Value	Significance
Grahamstown (Hunter Water Boar	Australia	Record daily precipitation	89.6 mm (3.5 in)	59 of 100 (Notable)
Ahuacatlan	Mexico	Record daily precipitation	81.8 mm (3.2 in)	59 of 100 (Notable)
Teocuitatlan	Mexico	Record daily precipitation	63.0 mm (2.5 in)	56 of 100 (Notable)
Lerma	Mexico	Record daily precipitation	59.9 mm (2.4 in)	56 of 100 (Notable)
Fergus Falls	United States	Record daily precipitation	45.7 mm (1.8 in)	56 of 100 (Notable)
Lensk	Russia	Record daily precipitation	29.2 mm (1.1 in)	55 of 100 (Notable)
Park Rapids Muni AP	United States	Record daily precipitation	54.4 mm (2.1 in)	55 of 100 (Notable)
El Palmito	Mexico	Record daily precipitation	77.2 mm (3.0 in)	54 of 100 (Notable)
Skjak	Norway	Record daily precipitation	25.2 mm (1.0 in)	54 of 100 (Notable)
Silverton	United States	Record daily precipitation	53.3 mm (2.1 in)	54 of 100 (Notable)
Rossared	Sweden	Record daily precipitation	42.7 mm (1.7 in)	53 of 100 (Notable)
Great Sand Dunes Np & Preserve	United States	Record daily precipitation	49.8 mm (2.0 in)	53 of 100 (Notable)
Virginia City	United States	Record daily snowfall	7.6 cm (3.0 in)	53 of 100 (Notable)
Tahlee (Carrington (Church St)	Australia	Record daily precipitation	72.6 mm (2.9 in)	52 of 100 (Notable)
Linhult_D	Sweden	Record daily precipitation	45.4 mm (1.8 in)	52 of 100 (Notable)
Shelihovo	Russia	Record daily precipitation	58.1 mm (2.3 in)	50 of 100 (Notable)
Dolores	United States	Record daily precipitation	38.6 mm (1.5 in)	50 of 100 (Notable)
Hid	Sweden	Record daily precipitation	43.0 mm (1.7 in)	49 of 100 (Notable)
Raymond Terrace (Wallaroo Stat	Australia	Record daily precipitation	62.0 mm (2.4 in)	48 of 100 (Notable)
Salamander Bay (Randall Drive)	Australia	Record daily precipitation	74.0 mm (2.9 in)	48 of 100 (Notable)
Bollebygd	Sweden	Record daily precipitation	35.0 mm (1.4 in)	48 of 100 (Notable)
Navajo Dam	United States	Record daily precipitation	38.1 mm (1.5 in)	48 of 100 (Notable)
Abild	Sweden	Record daily precipitation	45.6 mm (1.8 in)	47 of 100 (Notable)
Sonora	United States	Record low maximum temperature	13.9 C (57.0 F)	47 of 100 (Notable)
Akron 4 E	United States	Record high minimum temperature	18.9 C (66.0 F)	47 of 100 (Notable)
Mason City	United States	Record high minimum temperature	20.6 C (69.1 F)	47 of 100 (Notable)
Dzan	Mexico	Record low minimum temperature	13.3 C (55.9 F)	46 of 100 (Notable)
Fagered	Sweden	Record daily precipitation	45.0 mm (1.8 in)	46 of 100 (Notable)
Traveston	Australia	Record daily precipitation	39.6 mm (1.6 in)	45 of 100 (Notable)
Childs	United States	Record daily precipitation	40.9 mm (1.6 in)	45 of 100 (Notable)
Raymond Terrace (Kinross)	Australia	Record daily precipitation	63.0 mm (2.5 in)	44 of 100 (Notable)
Tryvasshogda	Norway	Record daily precipitation	46.1 mm (1.8 in)	44 of 100 (Notable)
Federal Pt	United States	Record low maximum temperature	23.3 C (73.9 F)	44 of 100 (Notable)
Guanacevi (Smn)	Mexico	Record daily precipitation	48.8 mm (1.9 in)	43 of 100 (Notable)
Rodeo (Dge)	Mexico	Record daily precipitation	64.8 mm (2.6 in)	43 of 100 (Notable)
Irving	United States	Record daily precipitation	45.2 mm (1.8 in)	43 of 100 (Notable)
Leroy 5 WSW	United States	Record high minimum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
Uravan	United States	Record daily precipitation	29.2 mm (1.1 in)	43 of 100 (Notable)
Artichoke Lake 1 E	United States	Record daily precipitation	38.4 mm (1.5 in)	43 of 100 (Notable)
Falls City 2 SSW	United States	Record low maximum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Cedar Pt	United States	Record daily precipitation	51.1 mm (2.0 in)	43 of 100 (Notable)
Elko Rgnl AP	United States	Record low maximum temperature	10.0 C (50.0 F)	43 of 100 (Notable)
Gerringong (Mayflower Village)	Australia	Record daily precipitation	61.0 mm (2.4 in)	42 of 100 (Notable)
Havraryd_D	Sweden	Record daily precipitation	58.5 mm (2.3 in)	42 of 100 (Notable)
Hutchinson 1 N	United States	Record high minimum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Greeneville Exp STN	United States	Record low minimum temperature	3.3 C (37.9 F)	42 of 100 (Notable)
Nelson Bay (Nelson Head)	Australia	Record daily precipitation	48.2 mm (1.9 in)	41 of 100 (Notable)
Parker	United States	Record low maximum temperature	29.4 C (84.9 F)	41 of 100 (Notable)
Big Creek Ph 1	United States	Record low maximum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Crookston NW Exp STN	United States	Record high maximum temperature	31.7 C (89.1 F)	41 of 100 (Notable)
Napoleon	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Greybull	United States	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Bishop AP	United States	Record low maximum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Mesillas	Mexico	Record daily precipitation	69.9 mm (2.8 in)	40 of 100 (Notable)
Tombstone	United States	Record daily precipitation	33.3 mm (1.3 in)	40 of 100 (Notable)
Beaver City	United States	Record high minimum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Lodgepole	United States	Record high minimum temperature	19.4 C (66.9 F)	40 of 100 (Notable)
Grenville	United States	Record daily precipitation	65.5 mm (2.6 in)	40 of 100 (Notable)
Mohall	United States	Record high minimum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
Xuzhou	China	Record daily precipitation	69.0 mm (2.7 in)	39 of 100 (Notable)

Counts by Type and Timescale

1,156 records

Records set or tied on 20 September 2004 by type: Highest daily maximum 126, Lowest daily maximum 213, Highest daily minimum 340, Lowest daily minimum 118, Heaviest daily rainfall 351, Heaviest daily snowfall 5, Deepest snow cover 3.

Records on 20 September 2004 by type
Record type	Records
Highest daily maximum	126
Lowest daily maximum	213
Highest daily minimum	340
Lowest daily minimum	118
Heaviest daily rainfall	351
Heaviest daily snowfall	5
Deepest snow cover	3

Records on 20 September 2004 by timescale: all-time 2, monthly 31, daily 1,123.

How Much Records Were Beaten By

882 broken records

Margins by which the 882 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.0. Ties are not counted.

Top 20 by Significance

20 September 2004

Top 20 records on 20 September 2004 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2004	Grahamstown (Hunter Water Boar, AU	monthly rain	89.6 mm (3.5 in)	49.4 mm (1.9 in)	21 years	59 of 100 (Notable)
20 September 2004	Ahuacatlan, MX	daily rain	81.8 mm (3.2 in)	47.0 mm (1.9 in)	49 years	59 of 100 (Notable)
20 September 2004	Teocuitatlan, MX	daily rain	63.0 mm (2.5 in)	53.1 mm (2.1 in)	41 years	56 of 100 (Notable)
20 September 2004	Lerma, MX	daily rain	59.9 mm (2.4 in)	43.1 mm (1.7 in)	36 years	56 of 100 (Notable)
20 September 2004	Fergus Falls, US	daily rain	45.7 mm (1.8 in)	16.5 mm (0.6 in)	98 years	56 of 100 (Notable)
20 September 2004	Lensk, RU	daily rain	29.2 mm (1.1 in)	17.6 mm (0.7 in)	31 years	55 of 100 (Notable)
20 September 2004	Park Rapids Muni AP, US	daily rain	54.4 mm (2.1 in)	14.5 mm (0.6 in)	97 years	55 of 100 (Notable)
20 September 2004	El Palmito, MX	daily rain	77.2 mm (3.0 in)	53.8 mm (2.1 in)	28 years	54 of 100 (Notable)
20 September 2004	Skjak, NO	daily rain	25.2 mm (1.0 in)	6.6 mm (0.26 in)	85 years	54 of 100 (Notable)
20 September 2004	Silverton, US	daily rain	53.3 mm (2.1 in)	30.9 mm (1.2 in)	15 years	54 of 100 (Notable)
20 September 2004	Rossared, SE	daily rain	42.7 mm (1.7 in)	20.5 mm (0.8 in)	58 years	53 of 100 (Notable)
20 September 2004	Great Sand Dunes Np & Preserve, US	daily rain	49.8 mm (2.0 in)	23.1 mm (0.9 in)	39 years	53 of 100 (Notable)
20 September 2004	Virginia City, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	110 years	53 of 100 (Notable)
20 September 2004	Tahlee (Carrington (Church St), AU	daily rain	72.6 mm (2.9 in)	39.3 mm (1.5 in)	34 years	52 of 100 (Notable)
20 September 2004	Linhult_D, SE	daily rain	45.4 mm (1.8 in)	21.4 mm (0.8 in)	58 years	52 of 100 (Notable)
20 September 2004	Shelihovo, RU	daily rain	58.1 mm (2.3 in)	49.5 mm (1.9 in)	23 years	50 of 100 (Notable)
20 September 2004	Dolores, US	daily rain	38.6 mm (1.5 in)	19.3 mm (0.8 in)	57 years	50 of 100 (Notable)
20 September 2004	Hid, SE	daily rain	43.0 mm (1.7 in)	29.6 mm (1.2 in)	23 years	49 of 100 (Notable)
20 September 2004	Raymond Terrace (Wallaroo Stat, AU	daily rain	62.0 mm (2.4 in)	36.8 mm (1.4 in)	19 years	48 of 100 (Notable)
20 September 2004	Salamander Bay (Randall Drive), AU	daily rain	74.0 mm (2.9 in)	50.0 mm (2.0 in)	19 years	48 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

1812 to 2004

Records set or tied on this calendar date in each year from 1812 to 2004. 2004 had 1,156 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 2004-09-20: 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 20	840
20 to 40	30
40 to 60	9
60 to 80	2
80 to 100	0
100 to 120	1