Weather Records on 1 October 2009

1,051 weather records were set or tied worldwide on 1 October 2009. Highest significance: Tizi Ouzou, DZ.

Key Facts for 1 October 2009

On 1 October 2009, 1,051 weather records were set or tied at long-record stations worldwide.
455 were record highs and 369 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 97 monthly and 952 daily.
Tizi Ouzou set a daily record precipitation of 70.1 mm (2.8 in) on 1 October 2009.
Across 161 earlier years (1813 to 2026) the same calendar date averaged 433 records.

Record Map

1,051 stations

1,051 station records on 1 October 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 October 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tizi Ouzou	Algeria	Record daily precipitation	70.1 mm (2.8 in)	78 of 100 (Major)
Dinghai	China	Record daily precipitation	97.2 mm (3.8 in)	58 of 100 (Notable)
Culbertson	United States	Record daily precipitation	31.2 mm (1.2 in)	58 of 100 (Notable)
Aldan	Russia	Record daily precipitation	38.4 mm (1.5 in)	57 of 100 (Notable)
Bredette	United States	Record daily precipitation	29.0 mm (1.1 in)	54 of 100 (Notable)
Fargo Hector Intl AP	United States	Record daily precipitation	50.3 mm (2.0 in)	53 of 100 (Notable)
San Luis de la Paz	Mexico	Record high maximum temperature	35.0 C (95.0 F)	50 of 100 (Notable)
Cooperstown	United States	Record daily precipitation	43.2 mm (1.7 in)	50 of 100 (Notable)
Hayden	United States	Record daily snowfall	5.1 cm (2.0 in)	49 of 100 (Notable)
Ola	United States	Record low minimum temperature	-8.3 C (17.1 F)	49 of 100 (Notable)
Ada	United States	Record daily precipitation	54.9 mm (2.2 in)	49 of 100 (Notable)
Windom	United States	Record daily precipitation	53.8 mm (2.1 in)	47 of 100 (Notable)
Sodus 1W	United States	Record daily precipitation	48.8 mm (1.9 in)	47 of 100 (Notable)
Collegeville St John's	United States	Record daily precipitation	64.8 mm (2.6 in)	45 of 100 (Notable)
Ipswich	United States	Record daily precipitation	29.7 mm (1.2 in)	45 of 100 (Notable)
Monticello 2E	United States	Record low minimum temperature	-5.6 C (21.9 F)	45 of 100 (Notable)
Wanship Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Grand Junction Walker Fld	United States	Record low minimum temperature	-2.8 C (27.0 F)	45 of 100 (Notable)
Mina	Mexico	Record daily precipitation	32.0 mm (1.3 in)	44 of 100 (Notable)
San Juanico	Mexico	Record daily precipitation	84.8 mm (3.3 in)	43 of 100 (Notable)
El Arenal	Mexico	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Circleville	United States	Record low maximum temperature	11.7 C (53.1 F)	43 of 100 (Notable)
Richland	United States	Record low maximum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Mancos 1SW	United States	Record low minimum temperature	-3.9 C (25.0 F)	42 of 100 (Notable)
Howell Wwtp	United States	Record low minimum temperature	-2.2 C (28.0 F)	42 of 100 (Notable)
Cerro	United States	Record low minimum temperature	-4.4 C (24.1 F)	42 of 100 (Notable)
Black Rock	United States	Record low minimum temperature	-6.7 C (19.9 F)	42 of 100 (Notable)
Edgerton	United States	Record daily precipitation	38.6 mm (1.5 in)	41 of 100 (Notable)
Chippewa Lake	United States	Record low maximum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Del Norte 3ENE	United States	Record low minimum temperature	-6.1 C (21.0 F)	40 of 100 (Notable)
Palisade	United States	Record low minimum temperature	-1.1 C (30.0 F)	40 of 100 (Notable)
Bienville 3 NE	United States	Record daily precipitation	63.5 mm (2.5 in)	40 of 100 (Notable)
Grand Forks UNIV (NWS)	United States	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Muleshoe #1	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Presa Colorines (Cfe)	Mexico	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
San Miguel Chimalapa	Mexico	Record low minimum temperature	1.7 C (35.1 F)	39 of 100 (Notable)
Dudinka	Russia	Record high maximum temperature	12.3 C (54.1 F)	39 of 100 (Notable)
Hayden	United States	Record low maximum temperature	6.7 C (44.1 F)	39 of 100 (Notable)
Emmett 2 E	United States	Record low maximum temperature	13.3 C (55.9 F)	39 of 100 (Notable)
Minneota	United States	Record daily precipitation	58.7 mm (2.3 in)	39 of 100 (Notable)
Ambrose 3 N	United States	Record daily precipitation	27.9 mm (1.1 in)	39 of 100 (Notable)
Ketchikan AP	United States	Record low maximum temperature	9.4 C (48.9 F)	39 of 100 (Notable)
Santo Domingo	Mexico	Record daily precipitation	86.9 mm (3.4 in)	38 of 100 (Notable)
Spencer 1 N	United States	Record daily precipitation	41.9 mm (1.6 in)	38 of 100 (Notable)
Brusett 3 E	United States	Record daily precipitation	32.3 mm (1.3 in)	38 of 100 (Notable)
Orovada 3 W	United States	Record low minimum temperature	-8.9 C (16.0 F)	38 of 100 (Notable)
Jeffrey City	United States	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Minneapolis-St Paul Intl AP	United States	Record daily precipitation	32.8 mm (1.3 in)	38 of 100 (Notable)
El Pilar	Mexico	Record daily precipitation	62.0 mm (2.4 in)	37 of 100 (Notable)
Santa Gertrudis	Mexico	Record daily precipitation	72.9 mm (2.9 in)	37 of 100 (Notable)
Tarko-Sale	Russia	Record high maximum temperature	17.5 C (63.5 F)	37 of 100 (Notable)
Deer Flat Dam	United States	Record low maximum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Elk	United States	Record high minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Elk Mtn	United States	Record daily snowfall	10.2 cm (4.0 in)	37 of 100 (Notable)
Elk Mtn	United States	Record snow depth	10.2 cm (4.0 in)	37 of 100 (Notable)
Port Augusta (Carriewerloo STN	Australia	Record daily precipitation	28.8 mm (1.1 in)	36 of 100 (Notable)
Tolka	Russia	Record high maximum temperature	18.8 C (65.8 F)	36 of 100 (Notable)
Ugut	Russia	Record high maximum temperature	20.3 C (68.5 F)	36 of 100 (Notable)
Ft Valley	United States	Record low minimum temperature	-8.3 C (17.1 F)	36 of 100 (Notable)
Grace	United States	Record low minimum temperature	-6.7 C (19.9 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,051 records

Records set or tied on 1 October 2009 by type: Highest daily maximum 256, Lowest daily maximum 162, Highest daily minimum 199, Lowest daily minimum 207, Heaviest daily rainfall 199, Heaviest daily snowfall 17, Deepest snow cover 11.

Records on 1 October 2009 by type
Record type	Records
Highest daily maximum	256
Lowest daily maximum	162
Highest daily minimum	199
Lowest daily minimum	207
Heaviest daily rainfall	199
Heaviest daily snowfall	17
Deepest snow cover	11

Records on 1 October 2009 by timescale: all-time 2, monthly 97, daily 952.

How Much Records Were Beaten By

778 broken records

Margins by which the 778 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 140.0. Ties are not counted.

Top 20 by Significance

1 October 2009

Top 20 records on 1 October 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 October 2009	Tizi Ouzou, DZ	daily rain	70.1 mm (2.8 in)	56.0 mm (2.2 in)	94 years	78 of 100 (Major)
1 October 2009	Dinghai, CN	daily rain	97.2 mm (3.8 in)	82.0 mm (3.2 in)	44 years	58 of 100 (Notable)
1 October 2009	Culbertson, US	daily rain	31.2 mm (1.2 in)	16.0 mm (0.6 in)	83 years	58 of 100 (Notable)
1 October 2009	Aldan, RU	monthly rain	38.4 mm (1.5 in)	12.4 mm (0.5 in)	5 years	57 of 100 (Notable)
1 October 2009	Bredette, US	daily rain	29.0 mm (1.1 in)	21.6 mm (0.9 in)	27 years	54 of 100 (Notable)
1 October 2009	Fargo Hector Intl AP, US	daily rain	50.3 mm (2.0 in)	30.7 mm (1.2 in)	27 years	53 of 100 (Notable)
1 October 2009	San Luis de la Paz, MX	monthly high max	35.0 C (95.0 F)	3.3 C (5.9 F)	84 years	50 of 100 (Notable)
1 October 2009	Cooperstown, US	daily rain	43.2 mm (1.7 in)	31.8 mm (1.3 in)	26 years	50 of 100 (Notable)
1 October 2009	Hayden, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	100 years	49 of 100 (Notable)
1 October 2009	Ola, US	daily low min	-8.3 C (17.1 F)	3.9 C (7.0 F)	110 years	49 of 100 (Notable)
1 October 2009	Ada, US	daily rain	54.9 mm (2.2 in)	24.4 mm (1.0 in)	38 years	49 of 100 (Notable)
1 October 2009	Windom, US	daily rain	53.8 mm (2.1 in)	32.7 mm (1.3 in)	10 years	47 of 100 (Notable)
1 October 2009	Sodus 1W, US	daily rain	48.8 mm (1.9 in)	25.4 mm (1.0 in)	50 years	47 of 100 (Notable)
1 October 2009	Collegeville St John's, US	daily rain	64.8 mm (2.6 in)	17.3 mm (0.7 in)	59 years	45 of 100 (Notable)
1 October 2009	Ipswich, US	daily rain	29.7 mm (1.2 in)	4.8 mm (0.19 in)	102 years	45 of 100 (Notable)
1 October 2009	Monticello 2E, US	daily low min	-5.6 C (21.9 F)	2.3 C (4.1 F)	106 years	45 of 100 (Notable)
1 October 2009	Wanship Dam, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	54 years	45 of 100 (Notable)
1 October 2009	Grand Junction Walker Fld, US	daily low min	-2.8 C (27.0 F)	4.5 C (8.1 F)	82 years	45 of 100 (Notable)
1 October 2009	Mina, MX	daily rain	32.0 mm (1.3 in)	29.2 mm (1.1 in)	54 years	44 of 100 (Notable)
1 October 2009	San Juanico, MX	all-time rain	84.8 mm (3.3 in)	14.9 mm (0.6 in)	17 years	43 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 2009

Records set or tied on this calendar date in each year from 1813 to 2009. 2009 had 1,051 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 2009-10-01: 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	737
20 to 40	25
40 to 60	5
60 to 80	3
80 to 100	1
100 to 120	3
120 to 140	4