Weather Records on 30 September 1997

729 weather records were set or tied worldwide on 30 September 1997. Highest significance: Alicante, ES.

Key Facts for 30 September 1997

On 30 September 1997, 729 weather records were set or tied at long-record stations worldwide.
421 were record highs and 118 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 24 monthly and 703 daily.
Alicante set an all-time record daily precipitation of 270.2 mm (10.6 in) on 30 September 1997.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 438 records.

Record Map

729 stations

729 station records on 30 September 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Alicante	Spain	Record daily precipitation	270.2 mm (10.6 in)	63 of 100 (Major)
Puente Jula	Mexico	Record daily precipitation	188.7 mm (7.4 in)	55 of 100 (Notable)
Conceicao Dos Ouros	Brazil	Record daily precipitation	51.0 mm (2.0 in)	53 of 100 (Notable)
Chilapa (Smn)	Mexico	Record daily precipitation	85.9 mm (3.4 in)	52 of 100 (Notable)
Margaritas	Mexico	Record daily precipitation	147.8 mm (5.8 in)	50 of 100 (Notable)
Belisario Dominguez I	Mexico	Record daily precipitation	118.9 mm (4.7 in)	49 of 100 (Notable)
Salitre	Brazil	Record daily precipitation	52.9 mm (2.1 in)	48 of 100 (Notable)
Santiago Tutla	Mexico	Record daily precipitation	243.8 mm (9.6 in)	46 of 100 (Notable)
La Florencia	Mexico	Record daily precipitation	133.9 mm (5.3 in)	45 of 100 (Notable)
El Terrero (Cfe)	Mexico	Record daily precipitation	89.9 mm (3.5 in)	42 of 100 (Notable)
Santa Fe	Mexico	Record high maximum temperature	33.9 C (93.0 F)	40 of 100 (Notable)
Roosevelt 1 S	United States	Record high minimum temperature	23.9 C (75.0 F)	39 of 100 (Notable)
Gage	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Brasopolis	Brazil	Record daily precipitation	42.3 mm (1.7 in)	38 of 100 (Notable)
Pico Do Itapeva	Brazil	Record daily precipitation	37.6 mm (1.5 in)	38 of 100 (Notable)
Faxinal	Brazil	Record daily precipitation	46.4 mm (1.8 in)	38 of 100 (Notable)
Hobbs	United States	Record high minimum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Oxford	United Kingdom	Record high minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
El Tarahumar	Mexico	Record low maximum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
Tustin Irvine Rch	United States	Record high minimum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Remedios	Brazil	Record daily precipitation	48.9 mm (1.9 in)	35 of 100 (Notable)
Jacupiranga	Brazil	Record daily precipitation	42.9 mm (1.7 in)	35 of 100 (Notable)
Chacalapa	Mexico	Record daily precipitation	109.2 mm (4.3 in)	35 of 100 (Notable)
Maricao Fish Hatchery	Puerto Rico [United States]	Record daily precipitation	85.1 mm (3.4 in)	34 of 100 (Routine)
Albacete Los Llanos	Spain	Record daily precipitation	33.3 mm (1.3 in)	34 of 100 (Routine)
Santa Barbara	United States	Record high minimum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Blaine	United States	Record high minimum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
La Parota (Cfe)	Mexico	Record daily precipitation	71.9 mm (2.8 in)	33 of 100 (Routine)
Vargem Do Cervo	Brazil	Record daily precipitation	56.6 mm (2.2 in)	32 of 100 (Routine)
Ayutla	Mexico	Record low minimum temperature	16.7 C (62.1 F)	32 of 100 (Routine)
Montemorelos	Mexico	Record high maximum temperature	38.3 C (100.9 F)	32 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record low maximum temperature	28.9 C (84.0 F)	32 of 100 (Routine)
Blagovescensk	Russia	Record high maximum temperature	23.6 C (74.5 F)	32 of 100 (Routine)
Iguape	Brazil	Record daily precipitation	47.9 mm (1.9 in)	31 of 100 (Routine)
Capitan Carlos Martinez de Pi	Peru	Record high minimum temperature	19.5 C (67.1 F)	31 of 100 (Routine)
Miami	United States	Record high minimum temperature	20.6 C (69.1 F)	31 of 100 (Routine)
Chula Vista	United States	Record high minimum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Fergana	Uzbekistan	Record high minimum temperature	14.6 C (58.3 F)	31 of 100 (Routine)
Ze da Rosa	Brazil	Record daily precipitation	68.9 mm (2.7 in)	30 of 100 (Routine)
Santa Cruz Do Rio Pardo	Brazil	Record daily precipitation	50.6 mm (2.0 in)	30 of 100 (Routine)
Catucaba	Brazil	Record daily precipitation	45.0 mm (1.8 in)	30 of 100 (Routine)
Xaltianguis (Cfe)	Mexico	Record daily precipitation	64.8 mm (2.6 in)	30 of 100 (Routine)
Aceituna Wtp	Puerto Rico [United States]	Record daily precipitation	114.3 mm (4.5 in)	30 of 100 (Routine)
Bognor Regis	United Kingdom	Record high maximum temperature	25.0 C (77.0 F)	30 of 100 (Routine)
Ouro Leve	Brazil	Record daily precipitation	39.6 mm (1.6 in)	29 of 100 (Routine)
San Jeronimito	Mexico	Record daily precipitation	91.2 mm (3.6 in)	29 of 100 (Routine)
San Miguel El Alto	Mexico	Record high maximum temperature	32.8 C (91.0 F)	29 of 100 (Routine)
Actopan	Mexico	Record daily precipitation	55.1 mm (2.2 in)	29 of 100 (Routine)
Antalya	Turkey	Record daily precipitation	37.1 mm (1.5 in)	29 of 100 (Routine)
Turvo	Brazil	Record daily precipitation	51.0 mm (2.0 in)	28 of 100 (Routine)
Monclova	Mexico	Record high minimum temperature	25.6 C (78.1 F)	28 of 100 (Routine)
Escuintla (Dge)	Mexico	Record daily precipitation	138.4 mm (5.4 in)	28 of 100 (Routine)
Apatzingan (Smn)	Mexico	Record high maximum temperature	38.9 C (102.0 F)	28 of 100 (Routine)
La Estanzuela	Mexico	Record high maximum temperature	33.9 C (93.0 F)	28 of 100 (Routine)
Canisteo 1 SW	United States	Record daily precipitation	36.8 mm (1.4 in)	28 of 100 (Routine)
Bairro Alto	Brazil	Record daily precipitation	37.5 mm (1.5 in)	27 of 100 (Routine)
Finca Hamburgo	Mexico	Record daily precipitation	148.6 mm (5.9 in)	27 of 100 (Routine)
San Juan Atepec	Mexico	Record daily precipitation	40.1 mm (1.6 in)	27 of 100 (Routine)
Rothamsted	United Kingdom	Record high minimum temperature	14.9 C (58.8 F)	27 of 100 (Routine)
Watertown	United States	Record daily precipitation	49.5 mm (1.9 in)	27 of 100 (Routine)

Counts by Type and Timescale

729 records

Records set or tied on 30 September 1997 by type: Highest daily maximum 189, Lowest daily maximum 47, Highest daily minimum 232, Lowest daily minimum 71, Heaviest daily rainfall 189, Heaviest daily snowfall 1.

Records on 30 September 1997 by type
Record type	Records
Highest daily maximum	189
Lowest daily maximum	47
Highest daily minimum	232
Lowest daily minimum	71
Heaviest daily rainfall	189
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 30 September 1997 by timescale: all-time 2, monthly 24, daily 703.

How Much Records Were Beaten By

497 broken records

Margins by which the 497 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 222.0. Ties are not counted.

Top 20 by Significance

30 September 1997

Top 20 records on 30 September 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1997	Alicante, ES	all-time rain	270.2 mm (10.6 in)	50.0 mm (2.0 in)	14 years	63 of 100 (Major)
30 September 1997	Puente Jula, MX	daily rain	188.7 mm (7.4 in)	136.9 mm (5.4 in)	39 years	55 of 100 (Notable)
30 September 1997	Conceicao Dos Ouros, BR	daily rain	51.0 mm (2.0 in)	41.0 mm (1.6 in)	27 years	53 of 100 (Notable)
30 September 1997	Chilapa (Smn), MX	daily rain	85.9 mm (3.4 in)	41.4 mm (1.6 in)	34 years	52 of 100 (Notable)
30 September 1997	Margaritas, MX	daily rain	147.8 mm (5.8 in)	102.8 mm (4.0 in)	24 years	50 of 100 (Notable)
30 September 1997	Belisario Dominguez I, MX	daily rain	118.9 mm (4.7 in)	70.6 mm (2.8 in)	30 years	49 of 100 (Notable)
30 September 1997	Salitre, BR	daily rain	52.9 mm (2.1 in)	34.3 mm (1.4 in)	52 years	48 of 100 (Notable)
30 September 1997	Santiago Tutla, MX	daily rain	243.8 mm (9.6 in)	222.0 mm (8.7 in)	12 years	46 of 100 (Notable)
30 September 1997	La Florencia, MX	daily rain	133.9 mm (5.3 in)	94.5 mm (3.7 in)	12 years	45 of 100 (Notable)
30 September 1997	El Terrero (Cfe), MX	daily rain	89.9 mm (3.5 in)	56.6 mm (2.2 in)	34 years	42 of 100 (Notable)
30 September 1997	Santa Fe, MX	daily high max	33.9 C (93.0 F)	6.1 C (11.0 F)	32 years	40 of 100 (Notable)
30 September 1997	Roosevelt 1 S, US	daily high min	23.9 C (75.0 F)	2.2 C (4.0 F)	76 years	39 of 100 (Notable)
30 September 1997	Gage, US	daily high min	17.2 C (63.0 F)	1.6 C (2.9 F)	87 years	39 of 100 (Notable)
30 September 1997	Brasopolis, BR	daily rain	42.3 mm (1.7 in)	31.3 mm (1.2 in)	6 years	38 of 100 (Notable)
30 September 1997	Pico Do Itapeva, BR	daily rain	37.6 mm (1.5 in)	24.1 mm (0.9 in)	26 years	38 of 100 (Notable)
30 September 1997	Faxinal, BR	daily rain	46.4 mm (1.8 in)	24.0 mm (0.9 in)	12 years	38 of 100 (Notable)
30 September 1997	Hobbs, US	daily high min	22.2 C (72.0 F)	3.3 C (5.9 F)	71 years	38 of 100 (Notable)
30 September 1997	Oxford, GB	daily high min	15.0 C (59.0 F)	0.4 C (0.7 F)	88 years	37 of 100 (Notable)
30 September 1997	El Tarahumar, MX	monthly low max	7.8 C (46.0 F)	3.9 C (7.0 F)	27 years	36 of 100 (Notable)
30 September 1997	Tustin Irvine Rch, US	daily high min	21.1 C (70.0 F)	2.2 C (4.0 F)	76 years	36 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 1997

Records set or tied on this calendar date in each year from 1806 to 1997. 1997 had 729 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 1997-09-30: 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 50	483
50 to 100	11
100 to 150	2
150 to 200	0
200 to 250	1