Weather Records on 9 October 1991

707 weather records were set or tied worldwide on 9 October 1991. Highest significance: Tres Zapotes, MX.

Key Facts for 9 October 1991

On 9 October 1991, 707 weather records were set or tied at long-record stations worldwide.
389 were record highs and 192 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 693 daily.
Tres Zapotes set a daily record precipitation of 227.1 mm (8.9 in) on 9 October 1991.
Across 162 earlier years (1793 to 2026) the same calendar date averaged 466 records.

Record Map

707 stations

707 station records on 9 October 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 October 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tres Zapotes	Mexico	Record daily precipitation	227.1 mm (8.9 in)	52 of 100 (Notable)
Pico Do Itapeva	Brazil	Record daily precipitation	66.8 mm (2.6 in)	49 of 100 (Notable)
Ixtepeji	Mexico	Record daily precipitation	39.9 mm (1.6 in)	49 of 100 (Notable)
Bosduiwekop	South Africa	Record daily precipitation	41.0 mm (1.6 in)	49 of 100 (Notable)
Yautepec	Mexico	Record daily precipitation	63.0 mm (2.5 in)	47 of 100 (Notable)
Paraiso Novillero	Mexico	Record daily precipitation	101.3 mm (4.0 in)	47 of 100 (Notable)
Mitt. Narsarsuaq	Greenland [Denmark]	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Halmstad	Sweden	Record high maximum temperature	18.2 C (64.8 F)	44 of 100 (Notable)
Perth Regional Office	Australia	Record high maximum temperature	32.8 C (91.0 F)	43 of 100 (Notable)
Visby_Flygplats	Sweden	Record high maximum temperature	18.8 C (65.8 F)	43 of 100 (Notable)
Teojomulco	Mexico	Record daily precipitation	79.8 mm (3.1 in)	42 of 100 (Notable)
Woolgoolga (Clear Place)	Australia	Record daily precipitation	63.6 mm (2.5 in)	41 of 100 (Notable)
Mata de Limones	Mexico	Record daily precipitation	119.1 mm (4.7 in)	41 of 100 (Notable)
St Lawrence Post Office	Australia	Record high maximum temperature	35.7 C (96.3 F)	39 of 100 (Notable)
Nieves	Mexico	Record daily precipitation	28.4 mm (1.1 in)	39 of 100 (Notable)
Bellrock	South Africa	Record daily precipitation	60.3 mm (2.4 in)	39 of 100 (Notable)
Insizwa (Bos)	South Africa	Record daily precipitation	60.4 mm (2.4 in)	39 of 100 (Notable)
Oneonta	United States	Record low minimum temperature	-0.6 C (30.9 F)	39 of 100 (Notable)
Saltville 1N	United States	Record low minimum temperature	-2.2 C (28.0 F)	39 of 100 (Notable)
Gulkana AP	United States	Record daily snowfall	13.7 cm (5.4 in)	39 of 100 (Notable)
Placerville	United States	Record high minimum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Honolua Fld 49 494	United States	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Finca A. Prusia	Mexico	Record daily precipitation	138.2 mm (5.4 in)	36 of 100 (Notable)
Boras	Sweden	Record high maximum temperature	18.5 C (65.3 F)	36 of 100 (Notable)
Biskra	Algeria	Record high minimum temperature	24.5 C (76.1 F)	35 of 100 (Notable)
Echeverria	Mexico	Record daily precipitation	45.2 mm (1.8 in)	35 of 100 (Notable)
Durban Roodepoort Deep Gm	South Africa	Record daily precipitation	35.0 mm (1.4 in)	35 of 100 (Notable)
Tarifa	Spain	Record daily precipitation	73.0 mm (2.9 in)	35 of 100 (Notable)
Buckeye	United States	Record high maximum temperature	40.6 C (105.1 F)	35 of 100 (Notable)
Healy	United States	Record high maximum temperature	34.4 C (93.9 F)	35 of 100 (Notable)
Miami Intl AP	United States	Record daily precipitation	101.6 mm (4.0 in)	35 of 100 (Notable)
Americus	United States	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Boca del Salado	Mexico	Record low minimum temperature	10.0 C (50.0 F)	33 of 100 (Routine)
Temascal	Mexico	Record daily precipitation	71.6 mm (2.8 in)	33 of 100 (Routine)
Te Kowai Exp STN	Australia	Record high maximum temperature	35.4 C (95.7 F)	32 of 100 (Routine)
Voru	Estonia	Record high maximum temperature	22.2 C (72.0 F)	32 of 100 (Routine)
Molino Blanco	Mexico	Record daily precipitation	39.9 mm (1.6 in)	32 of 100 (Routine)
Dahlonega 4WSW	United States	Record low minimum temperature	-1.1 C (30.0 F)	32 of 100 (Routine)
Liepaja	Latvia	Record high maximum temperature	20.2 C (68.4 F)	31 of 100 (Routine)
Garro	Mexico	Record daily precipitation	110.5 mm (4.4 in)	31 of 100 (Routine)
Heartsease	South Africa	Record daily precipitation	50.0 mm (2.0 in)	31 of 100 (Routine)
Sacaton	United States	Record high maximum temperature	40.6 C (105.1 F)	31 of 100 (Routine)
Mecca Fire STN	United States	Record high maximum temperature	42.2 C (108.0 F)	31 of 100 (Routine)
Wakeeney	United States	Record high maximum temperature	33.9 C (93.0 F)	31 of 100 (Routine)
Lahaina 361	United States	Record daily precipitation	27.4 mm (1.1 in)	31 of 100 (Routine)
Klipfontein	South Africa	Record daily precipitation	37.5 mm (1.5 in)	30 of 100 (Routine)
Scott City	United States	Record high maximum temperature	34.4 C (93.9 F)	30 of 100 (Routine)
Ibapah	United States	Record high maximum temperature	32.2 C (90.0 F)	30 of 100 (Routine)
Juan Rodriguez Clara	Mexico	Record daily precipitation	50.5 mm (2.0 in)	29 of 100 (Routine)
Akron 4 E	United States	Record high maximum temperature	28.3 C (82.9 F)	29 of 100 (Routine)
Alton 1 W	United States	Record high maximum temperature	35.0 C (95.0 F)	29 of 100 (Routine)
Phillipsburg 1 SSE	United States	Record high maximum temperature	34.4 C (93.9 F)	29 of 100 (Routine)
Tribune 1W	United States	Record high maximum temperature	33.9 C (93.0 F)	29 of 100 (Routine)
Copperhill	United States	Record low minimum temperature	-2.2 C (28.0 F)	29 of 100 (Routine)
Madrid/Barajas	Spain	Record daily precipitation	26.9 mm (1.1 in)	28 of 100 (Routine)
Trona	United States	Record high minimum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Lovelock	United States	Record high minimum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Morawa	Australia	Record high maximum temperature	35.7 C (96.3 F)	27 of 100 (Routine)
Meldrum (Coolawarrah)	Australia	Record daily precipitation	40.0 mm (1.6 in)	27 of 100 (Routine)
San Felipe Orizatlan (Smn)	Mexico	Record low maximum temperature	20.0 C (68.0 F)	27 of 100 (Routine)

Counts by Type and Timescale

707 records

Records set or tied on 9 October 1991 by type: Highest daily maximum 276, Lowest daily maximum 78, Highest daily minimum 113, Lowest daily minimum 114, Heaviest daily rainfall 125, Heaviest daily snowfall 1.

Records on 9 October 1991 by type
Record type	Records
Highest daily maximum	276
Lowest daily maximum	78
Highest daily minimum	113
Lowest daily minimum	114
Heaviest daily rainfall	125
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 9 October 1991 by timescale: all-time 0, monthly 14, daily 693.

How Much Records Were Beaten By

517 broken records

Margins by which the 517 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 130.3. Ties are not counted.

Top 20 by Significance

9 October 1991

Top 20 records on 9 October 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 October 1991	Tres Zapotes, MX	daily rain	227.1 mm (8.9 in)	130.3 mm (5.1 in)	36 years	52 of 100 (Notable)
9 October 1991	Pico Do Itapeva, BR	daily rain	66.8 mm (2.6 in)	42.9 mm (1.7 in)	28 years	49 of 100 (Notable)
9 October 1991	Ixtepeji, MX	daily rain	39.9 mm (1.6 in)	26.4 mm (1.0 in)	36 years	49 of 100 (Notable)
9 October 1991	Bosduiwekop, ZA	daily rain	41.0 mm (1.6 in)	26.8 mm (1.1 in)	60 years	49 of 100 (Notable)
9 October 1991	Yautepec, MX	daily rain	63.0 mm (2.5 in)	43.2 mm (1.7 in)	32 years	47 of 100 (Notable)
9 October 1991	Paraiso Novillero, MX	daily rain	101.3 mm (4.0 in)	73.9 mm (2.9 in)	36 years	47 of 100 (Notable)
9 October 1991	Mitt. Narsarsuaq, GL	daily rain	65.0 mm (2.6 in)	45.4 mm (1.8 in)	18 years	46 of 100 (Notable)
9 October 1991	Halmstad, SE	daily high max	18.2 C (64.8 F)	1.7 C (3.1 F)	97 years	44 of 100 (Notable)
9 October 1991	Perth Regional Office, AU	daily high max	32.8 C (91.0 F)	4.0 C (7.2 F)	82 years	43 of 100 (Notable)
9 October 1991	Visby_Flygplats, SE	daily high max	18.8 C (65.8 F)	1.3 C (2.3 F)	99 years	43 of 100 (Notable)
9 October 1991	Teojomulco, MX	daily rain	79.8 mm (3.1 in)	60.0 mm (2.4 in)	22 years	42 of 100 (Notable)
9 October 1991	Woolgoolga (Clear Place), AU	daily rain	63.6 mm (2.5 in)	51.2 mm (2.0 in)	2 years	41 of 100 (Notable)
9 October 1991	Mata de Limones, MX	monthly rain	119.1 mm (4.7 in)	30.2 mm (1.2 in)	27 years	41 of 100 (Notable)
9 October 1991	St Lawrence Post Office, AU	daily high max	35.7 C (96.3 F)	5.7 C (10.3 F)	20 years	39 of 100 (Notable)
9 October 1991	Nieves, MX	daily rain	28.4 mm (1.1 in)	14.4 mm (0.6 in)	48 years	39 of 100 (Notable)
9 October 1991	Bellrock, ZA	monthly rain	60.3 mm (2.4 in)	16.3 mm (0.6 in)	15 years	39 of 100 (Notable)
9 October 1991	Insizwa (Bos), ZA	daily rain	60.4 mm (2.4 in)	26.4 mm (1.0 in)	20 years	39 of 100 (Notable)
9 October 1991	Oneonta, US	daily low min	-0.6 C (30.9 F)	1.2 C (2.2 F)	95 years	39 of 100 (Notable)
9 October 1991	Saltville 1N, US	daily low min	-2.2 C (28.0 F)	1.1 C (2.0 F)	95 years	39 of 100 (Notable)
9 October 1991	Gulkana AP, US	daily snowfall	13.7 cm (5.4 in)	4.3 cm (1.7 in)	72 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

1793 to 1991

Records set or tied on this calendar date in each year from 1793 to 1991. 1991 had 707 records.

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

Records on 10-09 in each year
Year	Records
1793	1
1795	1
1802	1
1834	1
1837	1
1846	2
1847	1
1854	2
1858	1
1861	1
1864	2
1865	3
1866	1
1867	2
1869	1
1870	2
1875	1
1876	2
1877	2
1879	2
1881	1
1882	1
1884	1
1885	1
1886	1
1887	2
1888	6
1889	1
1890	1
1891	1
1893	5
1895	7
1896	4
1897	1
1898	3
1899	5
1900	5
1901	2
1902	3
1903	15
1904	8
1905	14
1906	29
1907	6
1908	19
1909	34
1910	20
1911	16
1912	23
1913	57
1914	22
1915	25
1916	126
1917	65
1918	16
1919	68
1920	36
1921	217
1922	40
1923	72
1924	95
1925	272
1926	123
1927	107
1928	290
1929	196
1930	276
1931	298
1932	271
1933	187
1934	298
1935	208
1936	569
1937	405
1938	462
1939	877
1940	119
1941	570
1942	330
1943	442
1944	144
1945	539
1946	317
1947	277
1948	438
1949	1,531
1950	618
1951	347
1952	658
1953	343
1954	341
1955	643
1956	468
1957	256
1958	639
1959	1,432
1960	397
1961	622
1962	508
1963	474
1964	841
1965	349
1966	489
1967	347
1968	538
1969	389
1970	1,805
1971	423
1972	371
1973	1,454
1974	513
1975	552
1976	1,448
1977	586
1978	589
1979	914
1980	627
1981	653
1982	1,579
1983	548
1984	579
1985	1,724
1986	556
1987	850
1988	1,060
1989	679
1990	1,714
1991	707
1992	1,050
1993	1,043
1994	772
1995	1,139
1996	1,047
1997	2,113
1998	622
1999	1,017
2000	3,177
2001	855
2002	701
2003	1,386
2004	665
2005	807
2006	640
2007	1,450
2008	473
2009	1,772
2010	1,311
2011	1,046
2012	706
2013	562
2014	652
2015	780
2016	463
2017	1,457
2018	1,290
2019	964
2020	738
2021	751
2022	696
2023	643
2024	963
2025	503
2026	691

Download the Data

Data for records on 1991-10-09: 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	490
20 to 40	15
40 to 60	8
60 to 80	3
80 to 100	0
100 to 120	0
120 to 140	1