Weather Records on 1 October 1991

1,020 weather records were set or tied worldwide on 1 October 1991. Highest significance: St. Petersburg, RU.

Key Facts for 1 October 1991

On 1 October 1991, 1,020 weather records were set or tied at long-record stations worldwide.
531 were record highs and 101 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 125 monthly and 895 daily.
St. Petersburg set a daily record precipitation of 27.3 mm (1.1 in) on 1 October 1991.
Across 161 earlier years (1813 to 2026) the same calendar date averaged 433 records.

Record Map

1,020 stations

1,020 station records on 1 October 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 October 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
St. Petersburg	Russia	Record daily precipitation	27.3 mm (1.1 in)	61 of 100 (Major)
Matsumoto	Japan	Record daily precipitation	108.0 mm (4.3 in)	55 of 100 (Notable)
Titusville	United States	Record daily precipitation	171.5 mm (6.8 in)	55 of 100 (Notable)
Irozaki	Japan	Record daily precipitation	138.9 mm (5.5 in)	54 of 100 (Notable)
Jacarei	Brazil	Record daily precipitation	54.4 mm (2.1 in)	53 of 100 (Notable)
Waterville	United States	Record high minimum temperature	15.6 C (60.1 F)	51 of 100 (Notable)
Lorena	Brazil	Record daily precipitation	86.8 mm (3.4 in)	50 of 100 (Notable)
Erfde	Germany	Record daily precipitation	29.4 mm (1.2 in)	50 of 100 (Notable)
Utsunomiya	Japan	Record daily precipitation	86.1 mm (3.4 in)	50 of 100 (Notable)
Kiev	Ukraine	Record high minimum temperature	16.3 C (61.3 F)	50 of 100 (Notable)
Omaezaki	Japan	Record daily precipitation	118.1 mm (4.6 in)	48 of 100 (Notable)
Kumagaya	Japan	Record daily precipitation	83.1 mm (3.3 in)	47 of 100 (Notable)
Colonia Do Piagui	Brazil	Record daily precipitation	75.9 mm (3.0 in)	46 of 100 (Notable)
Juquitiba	Brazil	Record daily precipitation	82.5 mm (3.2 in)	46 of 100 (Notable)
Mito	Japan	Record daily precipitation	105.9 mm (4.2 in)	44 of 100 (Notable)
Shizuoka	Japan	Record daily precipitation	118.1 mm (4.6 in)	43 of 100 (Notable)
Kyoto	Japan	Record daily precipitation	91.9 mm (3.6 in)	43 of 100 (Notable)
Szeged	Hungary	Record daily precipitation	40.7 mm (1.6 in)	42 of 100 (Notable)
Vasilevici	Belarus	Record high minimum temperature	15.9 C (60.6 F)	41 of 100 (Notable)
Mairipora	Brazil	Record daily precipitation	45.2 mm (1.8 in)	41 of 100 (Notable)
Osijek	Croatia	Record daily precipitation	56.0 mm (2.2 in)	41 of 100 (Notable)
Birakan	Russia	Record daily precipitation	29.7 mm (1.2 in)	41 of 100 (Notable)
Timovskoe	Russia	Record low minimum temperature	-5.0 C (23.0 F)	41 of 100 (Notable)
Bobrynets	Ukraine	Record daily precipitation	26.9 mm (1.1 in)	41 of 100 (Notable)
Indio Fire STN	United States	Record high minimum temperature	26.7 C (80.1 F)	41 of 100 (Notable)
Tatui	Brazil	Record daily precipitation	54.3 mm (2.1 in)	40 of 100 (Notable)
Suwa	Japan	Record daily precipitation	102.1 mm (4.0 in)	40 of 100 (Notable)
Aldeinha	Brazil	Record daily precipitation	48.2 mm (1.9 in)	39 of 100 (Notable)
Bogoroditskoye-Fenino	Russia	Record high maximum temperature	25.1 C (77.2 F)	39 of 100 (Notable)
Uman	Ukraine	Record high minimum temperature	13.6 C (56.5 F)	39 of 100 (Notable)
Iguatama	Brazil	Record daily precipitation	63.5 mm (2.5 in)	38 of 100 (Notable)
Pico Do Itapeva	Brazil	Record daily precipitation	55.4 mm (2.2 in)	38 of 100 (Notable)
Fazenda Sao Luiz	Brazil	Record daily precipitation	63.5 mm (2.5 in)	38 of 100 (Notable)
Fairmont	United States	Record high minimum temperature	23.3 C (73.9 F)	38 of 100 (Notable)
Gibson Dam	United States	Record high minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Martinsdale 3 NNW	United States	Record high minimum temperature	11.7 C (53.1 F)	38 of 100 (Notable)
Sao Manuel	Brazil	Record daily precipitation	78.6 mm (3.1 in)	37 of 100 (Notable)
Tokyo	Japan	Record daily precipitation	95.0 mm (3.7 in)	37 of 100 (Notable)
Singeshult	Sweden	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Saby	Sweden	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Anaconda	United States	Record high minimum temperature	9.4 C (48.9 F)	37 of 100 (Notable)
Polson	United States	Record high minimum temperature	13.9 C (57.0 F)	37 of 100 (Notable)
Middletown 2 NW	United States	Record low minimum temperature	1.1 C (34.0 F)	37 of 100 (Notable)
Debrecen Airport	Hungary	Record high minimum temperature	16.9 C (62.4 F)	36 of 100 (Notable)
Kon-Kolodez	Russia	Record high maximum temperature	24.5 C (76.1 F)	36 of 100 (Notable)
Grangeville	United States	Record high minimum temperature	12.2 C (54.0 F)	36 of 100 (Notable)
Robe Comparison	Australia	Record high minimum temperature	14.7 C (58.5 F)	35 of 100 (Notable)
Barao Geraldo	Brazil	Record daily precipitation	65.0 mm (2.6 in)	35 of 100 (Notable)
Tejupa	Brazil	Record daily precipitation	43.7 mm (1.7 in)	35 of 100 (Notable)
Yokohama	Japan	Record daily precipitation	96.0 mm (3.8 in)	35 of 100 (Notable)
Ocampo	Mexico	Record low maximum temperature	16.7 C (62.1 F)	35 of 100 (Notable)
Matehuala (Smn)	Mexico	Record daily precipitation	61.2 mm (2.4 in)	35 of 100 (Notable)
Kondopoga	Russia	Record daily precipitation	32.6 mm (1.3 in)	35 of 100 (Notable)
Kent	United States	Record high minimum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Los Angeles Downtown/Usc	United States	Record high maximum temperature	37.8 C (100.0 F)	35 of 100 (Notable)
Tirana	Albania	Record high maximum temperature	36.1 C (97.0 F)	34 of 100 (Routine)
Oshima	Japan	Record daily precipitation	167.9 mm (6.6 in)	34 of 100 (Routine)
Matsuyama	Japan	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)
Itau de Minas	Brazil	Record daily precipitation	55.0 mm (2.2 in)	33 of 100 (Routine)
Bairro Dos Lemes	Brazil	Record daily precipitation	44.2 mm (1.7 in)	33 of 100 (Routine)

Counts by Type and Timescale

1,020 records

Records set or tied on 1 October 1991 by type: Highest daily maximum 218, Lowest daily maximum 50, Highest daily minimum 313, Lowest daily minimum 51, Heaviest daily rainfall 385, Deepest snow cover 3.

Records on 1 October 1991 by type
Record type	Records
Highest daily maximum	218
Lowest daily maximum	50
Highest daily minimum	313
Lowest daily minimum	51
Heaviest daily rainfall	385
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 1 October 1991 by timescale: all-time 0, monthly 125, daily 895.

How Much Records Were Beaten By

841 broken records

Margins by which the 841 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 109.3. Ties are not counted.

Top 20 by Significance

1 October 1991

Top 20 records on 1 October 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 October 1991	St. Petersburg, RU	daily rain	27.3 mm (1.1 in)	11.6 mm (0.5 in)	76 years	61 of 100 (Major)
1 October 1991	Matsumoto, JP	monthly rain	108.0 mm (4.3 in)	43.0 mm (1.7 in)	17 years	55 of 100 (Notable)
1 October 1991	Titusville, US	daily rain	171.5 mm (6.8 in)	109.3 mm (4.3 in)	21 years	55 of 100 (Notable)
1 October 1991	Irozaki, JP	daily rain	138.9 mm (5.5 in)	77.9 mm (3.1 in)	37 years	54 of 100 (Notable)
1 October 1991	Jacarei, BR	daily rain	54.4 mm (2.1 in)	42.8 mm (1.7 in)	28 years	53 of 100 (Notable)
1 October 1991	Waterville, US	monthly high min	15.6 C (60.1 F)	2.8 C (5.0 F)	84 years	51 of 100 (Notable)
1 October 1991	Lorena, BR	daily rain	86.8 mm (3.4 in)	49.3 mm (1.9 in)	25 years	50 of 100 (Notable)
1 October 1991	Erfde, DE	daily rain	29.4 mm (1.2 in)	16.4 mm (0.6 in)	58 years	50 of 100 (Notable)
1 October 1991	Utsunomiya, JP	daily rain	86.1 mm (3.4 in)	65.6 mm (2.6 in)	21 years	50 of 100 (Notable)
1 October 1991	Kiev, UA	monthly high min	16.3 C (61.3 F)	1.2 C (2.2 F)	94 years	50 of 100 (Notable)
1 October 1991	Omaezaki, JP	daily rain	118.1 mm (4.6 in)	66.7 mm (2.6 in)	37 years	48 of 100 (Notable)
1 October 1991	Kumagaya, JP	daily rain	83.1 mm (3.3 in)	52.4 mm (2.1 in)	34 years	47 of 100 (Notable)
1 October 1991	Colonia Do Piagui, BR	daily rain	75.9 mm (3.0 in)	47.5 mm (1.9 in)	25 years	46 of 100 (Notable)
1 October 1991	Juquitiba, BR	daily rain	82.5 mm (3.2 in)	38.6 mm (1.5 in)	25 years	46 of 100 (Notable)
1 October 1991	Mito, JP	daily rain	105.9 mm (4.2 in)	70.9 mm (2.8 in)	9 years	44 of 100 (Notable)
1 October 1991	Shizuoka, JP	daily rain	118.1 mm (4.6 in)	63.3 mm (2.5 in)	24 years	43 of 100 (Notable)
1 October 1991	Kyoto, JP	daily rain	91.9 mm (3.6 in)	62.4 mm (2.5 in)	4 years	43 of 100 (Notable)
1 October 1991	Szeged, HU	monthly rain	40.7 mm (1.6 in)	3.2 mm (0.13 in)	60 years	42 of 100 (Notable)
1 October 1991	Vasilevici, BY	monthly high min	15.9 C (60.6 F)	1.3 C (2.3 F)	61 years	41 of 100 (Notable)
1 October 1991	Mairipora, BR	daily rain	45.2 mm (1.8 in)	26.4 mm (1.0 in)	52 years	41 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

1813 to 1991

Records set or tied on this calendar date in each year from 1813 to 1991. 1991 had 1,020 records.

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

Records on 10-01 in each year
Year	Records
1813	1
1814	1
1817	1
1819	1
1820	2
1823	1
1828	1
1845	1
1847	2
1861	1
1865	1
1866	1
1869	1
1870	1
1871	1
1874	4
1876	1
1877	3
1879	1
1881	6
1882	1
1883	1
1884	1
1886	1
1888	3
1889	1
1890	4
1891	1
1892	1
1893	9
1894	4
1895	1
1897	7
1898	1
1899	16
1900	2
1901	4
1902	16
1903	9
1904	8
1905	8
1906	11
1907	11
1908	20
1909	14
1910	12
1911	34
1912	37
1913	20
1914	28
1915	65
1916	105
1917	52
1918	20
1919	25
1920	98
1921	129
1922	160
1923	158
1924	86
1925	135
1926	181
1927	754
1928	129
1929	158
1930	106
1931	237
1932	220
1933	519
1934	188
1935	201
1936	388
1937	453
1938	284
1939	283
1940	207
1941	425
1942	290
1943	324
1944	583
1945	677
1946	486
1947	867
1948	271
1949	254
1950	1,019
1951	521
1952	712
1953	656
1954	976
1955	280
1956	260
1957	646
1958	1,050
1959	1,306
1960	143
1961	566
1962	376
1963	598
1964	312
1965	521
1966	646
1967	437
1968	426
1969	454
1970	275
1971	1,449
1972	625
1973	418
1974	1,104
1975	561
1976	854
1977	1,097
1978	492
1979	488
1980	600
1981	785
1982	733
1983	783
1984	1,266
1985	1,621
1986	1,476
1987	648
1988	502
1989	739
1990	612
1991	1,020
1992	1,392
1993	1,042
1994	580
1995	746
1996	1,007
1997	1,080
1998	1,345
1999	1,096
2000	1,006
2001	924
2002	951
2003	1,198
2004	826
2005	902
2006	806
2007	726
2008	573
2009	1,051
2010	1,093
2011	1,324
2012	647
2013	515
2014	397
2015	729
2016	473
2017	472
2018	694
2019	2,439
2020	566
2021	753
2022	609
2023	1,173
2024	751
2025	384
2026	553

Download the Data

Data for records on 1991-10-01: 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	759
20 to 40	61
40 to 60	11
60 to 80	8
80 to 100	0
100 to 120	2