Weather Records on 30 September 2004

573 weather records were set or tied worldwide on 30 September 2004. Highest significance: Jornada Exp Range, US.

Key Facts for 30 September 2004

On 30 September 2004, 573 weather records were set or tied at long-record stations worldwide.
242 were record highs and 153 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 43 monthly and 530 daily.
Jornada Exp Range set a daily record precipitation of 35.1 mm (1.4 in) on 30 September 2004.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 439 records.

Record Map

573 stations

573 station records on 30 September 2004 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 2004: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jornada Exp Range	United States	Record daily precipitation	35.1 mm (1.4 in)	59 of 100 (Notable)
Mungeranie (Cowarie)	Australia	Record daily precipitation	26.0 mm (1.0 in)	58 of 100 (Notable)
Mezcala	Mexico	Record daily precipitation	72.4 mm (2.9 in)	55 of 100 (Notable)
Aomori	Japan	Record daily precipitation	85.1 mm (3.4 in)	52 of 100 (Notable)
Tottori	Japan	Record daily precipitation	144.0 mm (5.7 in)	52 of 100 (Notable)
Santa Maria del Monte	Mexico	Record daily precipitation	39.4 mm (1.6 in)	52 of 100 (Notable)
Voznesensk	Ukraine	Record daily precipitation	48.0 mm (1.9 in)	49 of 100 (Notable)
Union de Tula	Mexico	Record daily precipitation	82.6 mm (3.3 in)	48 of 100 (Notable)
Lusk 2 SW	United States	Record daily precipitation	30.5 mm (1.2 in)	48 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record high minimum temperature	26.7 C (80.1 F)	47 of 100 (Notable)
Tiree	United Kingdom	Record daily precipitation	35.1 mm (1.4 in)	47 of 100 (Notable)
Tsuruga	Japan	Record daily precipitation	121.9 mm (4.8 in)	45 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record low minimum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Roma Ciampino	Italy	Record low minimum temperature	0.0 C (32.0 F)	43 of 100 (Notable)
Hachinohe	Japan	Record daily precipitation	100.6 mm (4.0 in)	43 of 100 (Notable)
Gurnang State Forest (Oberon Y	Australia	Record daily precipitation	32.0 mm (1.3 in)	42 of 100 (Notable)
Xochitlan Todos Santos	Mexico	Record high minimum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Akita	Japan	Record daily precipitation	69.1 mm (2.7 in)	39 of 100 (Notable)
San Jose del Cabo	Mexico	Record low minimum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record low maximum temperature	24.4 C (75.9 F)	39 of 100 (Notable)
Quirindi Post Office	Australia	Record daily precipitation	27.0 mm (1.1 in)	38 of 100 (Notable)
Uralsk	Kazakhstan	Record high minimum temperature	14.3 C (57.7 F)	38 of 100 (Notable)
Zhashkov	Ukraine	Record daily precipitation	26.0 mm (1.0 in)	38 of 100 (Notable)
Thermopolis	United States	Record high minimum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Nerriga Composite	Australia	Record daily precipitation	30.6 mm (1.2 in)	37 of 100 (Notable)
Broken Hill (Koonawarra)	Australia	Record daily precipitation	26.0 mm (1.0 in)	36 of 100 (Notable)
Tenango de Doria	Mexico	Record high maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
Marion Island	South Africa	Record low minimum temperature	-7.5 C (18.5 F)	36 of 100 (Notable)
Atlatlahuacan	Mexico	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Kirovohrad	Ukraine	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Valdez WSO	United States	Record daily precipitation	65.5 mm (2.6 in)	34 of 100 (Routine)
Mutsu	Japan	Record daily precipitation	91.2 mm (3.6 in)	33 of 100 (Routine)
Vista	United States	Record low minimum temperature	5.6 C (42.1 F)	33 of 100 (Routine)
Densmore 2N	United States	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Cuernavaca	Mexico	Record daily precipitation	42.9 mm (1.7 in)	32 of 100 (Routine)
Miller	United States	Record daily precipitation	26.2 mm (1.0 in)	32 of 100 (Routine)
Valentine 10 WSW	United States	Record daily precipitation	27.2 mm (1.1 in)	32 of 100 (Routine)
Double Four Rch	United States	Record daily precipitation	26.7 mm (1.1 in)	32 of 100 (Routine)
Manley Hot Springs	United States	Record snow depth	10.2 cm (4.0 in)	32 of 100 (Routine)
Lushi	China	Record daily precipitation	40.8 mm (1.6 in)	31 of 100 (Routine)
Guemez	Mexico	Record high maximum temperature	43.9 C (111.0 F)	31 of 100 (Routine)
Rostov-Na-Donu	Russia	Record high minimum temperature	16.6 C (61.9 F)	31 of 100 (Routine)
Suffolk Lake Kilby	United States	Record high maximum temperature	36.1 C (97.0 F)	31 of 100 (Routine)
Haines AP	United States	Record high minimum temperature	10.0 C (50.0 F)	31 of 100 (Routine)
Moonan Flat (High St)	Australia	Record daily precipitation	33.0 mm (1.3 in)	30 of 100 (Routine)
Yumenzhen	China	Record low minimum temperature	-5.8 C (21.6 F)	30 of 100 (Routine)
Sibu	Malaysia	Record daily precipitation	121.7 mm (4.8 in)	30 of 100 (Routine)
Cherdyn'	Russia	Record high minimum temperature	9.6 C (49.3 F)	30 of 100 (Routine)
Ica	Russia	Record daily precipitation	28.8 mm (1.1 in)	30 of 100 (Routine)
Mugur-Aksy	Russia	Record low minimum temperature	-15.0 C (5.0 F)	30 of 100 (Routine)
Groznyj	Russia	Record high maximum temperature	31.2 C (88.2 F)	30 of 100 (Routine)
Pontotoc 1N	United States	Record daily precipitation	54.1 mm (2.1 in)	30 of 100 (Routine)
Hunter Springs (Wondecla)	Australia	Record daily precipitation	37.8 mm (1.5 in)	29 of 100 (Routine)
Maizuru Reg Met HQ	Japan	Record daily precipitation	102.1 mm (4.0 in)	29 of 100 (Routine)
Kaunas	Lithuania	Record high minimum temperature	12.4 C (54.3 F)	29 of 100 (Routine)
Arvaiheer	Mongolia	Record low minimum temperature	-10.1 C (13.8 F)	29 of 100 (Routine)
Mt Vernon 3 WNW	United States	Record low minimum temperature	-1.7 C (28.9 F)	29 of 100 (Routine)
Changde	China	Record high maximum temperature	34.1 C (93.4 F)	28 of 100 (Routine)
Huoshan	China	Record high maximum temperature	33.8 C (92.8 F)	28 of 100 (Routine)
Aikawa	Japan	Record daily precipitation	57.4 mm (2.3 in)	28 of 100 (Routine)

Counts by Type and Timescale

573 records

Records set or tied on 30 September 2004 by type: Highest daily maximum 123, Lowest daily maximum 86, Highest daily minimum 119, Lowest daily minimum 67, Heaviest daily rainfall 171, Heaviest daily snowfall 3, Deepest snow cover 4.

Records on 30 September 2004 by type
Record type	Records
Highest daily maximum	123
Lowest daily maximum	86
Highest daily minimum	119
Lowest daily minimum	67
Heaviest daily rainfall	171
Heaviest daily snowfall	3
Deepest snow cover	4

Records on 30 September 2004 by timescale: all-time 0, monthly 43, daily 530.

How Much Records Were Beaten By

464 broken records

Margins by which the 464 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 94.0. Ties are not counted.

Top 20 by Significance

30 September 2004

Top 20 records on 30 September 2004 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 2004	Jornada Exp Range, US	daily rain	35.1 mm (1.4 in)	22.1 mm (0.9 in)	85 years	59 of 100 (Notable)
30 September 2004	Mungeranie (Cowarie), AU	daily rain	26.0 mm (1.0 in)	23.0 mm (0.9 in)	29 years	58 of 100 (Notable)
30 September 2004	Mezcala, MX	daily rain	72.4 mm (2.9 in)	60.5 mm (2.4 in)	39 years	55 of 100 (Notable)
30 September 2004	Aomori, JP	daily rain	85.1 mm (3.4 in)	53.6 mm (2.1 in)	36 years	52 of 100 (Notable)
30 September 2004	Tottori, JP	daily rain	144.0 mm (5.7 in)	94.0 mm (3.7 in)	26 years	52 of 100 (Notable)
30 September 2004	Santa Maria del Monte, MX	daily rain	39.4 mm (1.6 in)	25.4 mm (1.0 in)	40 years	52 of 100 (Notable)
30 September 2004	Voznesensk, UA	daily rain	48.0 mm (1.9 in)	40.5 mm (1.6 in)	50 years	49 of 100 (Notable)
30 September 2004	Union de Tula, MX	daily rain	82.6 mm (3.3 in)	43.2 mm (1.7 in)	18 years	48 of 100 (Notable)
30 September 2004	Lusk 2 SW, US	daily rain	30.5 mm (1.2 in)	11.4 mm (0.4 in)	77 years	48 of 100 (Notable)
30 September 2004	Mayaguez City, PR	monthly high min	26.7 C (80.1 F)	0.6 C (1.1 F)	77 years	47 of 100 (Notable)
30 September 2004	Tiree, GB	daily rain	35.1 mm (1.4 in)	24.2 mm (1.0 in)	23 years	47 of 100 (Notable)
30 September 2004	Tsuruga, JP	daily rain	121.9 mm (4.8 in)	75.9 mm (3.0 in)	25 years	45 of 100 (Notable)
30 September 2004	Tarpon Spgs Sewage Plt, US	daily low min	12.2 C (54.0 F)	2.8 C (5.0 F)	57 years	45 of 100 (Notable)
30 September 2004	Roma Ciampino, IT	monthly low min	0.0 C (32.0 F)	4.3 C (7.7 F)	40 years	43 of 100 (Notable)
30 September 2004	Hachinohe, JP	daily rain	100.6 mm (4.0 in)	54.1 mm (2.1 in)	25 years	43 of 100 (Notable)
30 September 2004	Gurnang State Forest (Oberon Y, AU	daily rain	32.0 mm (1.3 in)	10.9 mm (0.4 in)	70 years	42 of 100 (Notable)
30 September 2004	Xochitlan Todos Santos, MX	daily high min	20.6 C (69.1 F)	7.3 C (13.1 F)	45 years	42 of 100 (Notable)
30 September 2004	Akita, JP	daily rain	69.1 mm (2.7 in)	34.1 mm (1.3 in)	47 years	39 of 100 (Notable)
30 September 2004	San Jose del Cabo, MX	daily low min	17.8 C (64.0 F)	2.2 C (4.0 F)	70 years	39 of 100 (Notable)
30 September 2004	Tarpon Spgs Sewage Plt, US	daily low max	24.4 C (75.9 F)	1.2 C (2.2 F)	80 years	39 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

1806 to 2004

Records set or tied on this calendar date in each year from 1806 to 2004. 2004 had 573 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	529

Download the Data

Data for records on 2004-09-30: 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	439
20 to 40	17
40 to 60	5
60 to 80	2
80 to 100	1