Weather Records on 31 October 2009

1,030 weather records were set or tied worldwide on 31 October 2009. Highest significance: Blasillo, MX.

Key Facts for 31 October 2009

On 31 October 2009, 1,030 weather records were set or tied at long-record stations worldwide.
470 were record highs and 205 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 45 monthly and 983 daily.
Blasillo set an all-time record daily precipitation of 517.9 mm (20.4 in) on 31 October 2009.
Across 163 earlier years (1805 to 2025) the same calendar date averaged 468 records.

Record Map

1,030 stations

1,030 station records on 31 October 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 October 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Blasillo	Mexico	Record daily precipitation	517.9 mm (20.4 in)	67 of 100 (Major)
Hawkesdale (Post Office)	Australia	Record daily precipitation	28.8 mm (1.1 in)	62 of 100 (Major)
Pana	United States	Record daily precipitation	60.2 mm (2.4 in)	60 of 100 (Major)
Poblado C-22	Mexico	Record daily precipitation	359.9 mm (14.2 in)	57 of 100 (Notable)
Durham Ox	Australia	Record daily precipitation	44.2 mm (1.7 in)	53 of 100 (Notable)
Azoyu	Mexico	Record daily precipitation	104.9 mm (4.1 in)	50 of 100 (Notable)
Ft Morgan	United States	Record snow depth	10.2 cm (4.0 in)	49 of 100 (Notable)
Linjiang	China	Record daily precipitation	42.5 mm (1.7 in)	48 of 100 (Notable)
Scottsville	United States	Record daily precipitation	54.4 mm (2.1 in)	46 of 100 (Notable)
Poblado C-15	Mexico	Record daily precipitation	300.0 mm (11.8 in)	45 of 100 (Notable)
Elkton	United States	Record daily precipitation	60.7 mm (2.4 in)	44 of 100 (Notable)
Kent City 2 SW	United States	Record daily precipitation	49.0 mm (1.9 in)	44 of 100 (Notable)
Lima	United States	Record snow depth	20.3 cm (8.0 in)	44 of 100 (Notable)
Mt Pleasant 1N	United States	Record daily precipitation	50.8 mm (2.0 in)	44 of 100 (Notable)
Grayling	United States	Record daily precipitation	29.5 mm (1.2 in)	43 of 100 (Notable)
John Glenn Intl AP	United States	Record daily precipitation	30.7 mm (1.2 in)	43 of 100 (Notable)
Ometepec (Cfe)	Mexico	Record daily precipitation	72.9 mm (2.9 in)	42 of 100 (Notable)
Arcadia	United States	Record high maximum temperature	32.8 C (91.0 F)	42 of 100 (Notable)
Polson	United States	Record high minimum temperature	8.9 C (48.0 F)	42 of 100 (Notable)
Harrisburg 12WNW	United States	Record snow depth	22.9 cm (9.0 in)	42 of 100 (Notable)
Wallace 2W	United States	Record snow depth	20.3 cm (8.0 in)	42 of 100 (Notable)
Meeker	United States	Record low maximum temperature	0.0 C (32.0 F)	41 of 100 (Notable)
Enid Dam	United States	Record daily precipitation	61.0 mm (2.4 in)	41 of 100 (Notable)
Broken Bow 2 W	United States	Record snow depth	10.2 cm (4.0 in)	41 of 100 (Notable)
Columbia 3 WNW	United States	Record daily precipitation	58.4 mm (2.3 in)	41 of 100 (Notable)
Hohenwald	United States	Record daily precipitation	58.4 mm (2.3 in)	41 of 100 (Notable)
Nemours (Ghazaouet)	Algeria	Record high maximum temperature	26.6 C (79.9 F)	40 of 100 (Notable)
Pine Ridge (Mooki Springs)	Australia	Record daily precipitation	25.0 mm (1.0 in)	40 of 100 (Notable)
Melbourne Regional Office	Australia	Record high maximum temperature	33.1 C (91.6 F)	40 of 100 (Notable)
Presa Huapango	Mexico	Record daily precipitation	36.8 mm (1.4 in)	40 of 100 (Notable)
Anadyr	Russia	Record high minimum temperature	-0.8 C (30.6 F)	40 of 100 (Notable)
Moulton 2	United States	Record daily precipitation	55.4 mm (2.2 in)	40 of 100 (Notable)
Kaskaskia Rvr Navigation Lock	United States	Record daily precipitation	43.4 mm (1.7 in)	40 of 100 (Notable)
Houghton Lake 6 WSW	United States	Record daily precipitation	26.4 mm (1.0 in)	40 of 100 (Notable)
Moorhead	United States	Record daily precipitation	68.6 mm (2.7 in)	40 of 100 (Notable)
Anselmo 2 WSW	United States	Record daily snowfall	25.4 cm (10.0 in)	40 of 100 (Notable)
Neapolis Rsch & Ed STN	United States	Record daily precipitation	57.2 mm (2.3 in)	40 of 100 (Notable)
Fairmont	United States	Record high maximum temperature	31.7 C (89.1 F)	40 of 100 (Notable)
Vallecito Dam	United States	Record low minimum temperature	-13.3 C (8.1 F)	39 of 100 (Notable)
Knightstown 2 ENE	United States	Record daily precipitation	31.2 mm (1.2 in)	39 of 100 (Notable)
Harrison	United States	Record snow depth	20.3 cm (8.0 in)	39 of 100 (Notable)
El Tejocote	Mexico	Record daily precipitation	42.2 mm (1.7 in)	38 of 100 (Notable)
San Miguel Chimalapa	Mexico	Record low minimum temperature	1.7 C (35.1 F)	38 of 100 (Notable)
Vernon	United States	Record daily precipitation	61.2 mm (2.4 in)	38 of 100 (Notable)
Franklin	United States	Record daily precipitation	44.2 mm (1.7 in)	38 of 100 (Notable)
Abbeville	United States	Record daily precipitation	57.7 mm (2.3 in)	38 of 100 (Notable)
Chengshantou	China	Record daily precipitation	40.1 mm (1.6 in)	37 of 100 (Notable)
Magdalena	Mexico	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Bajkit	Russia	Record low maximum temperature	-24.3 C (-11.7 F)	37 of 100 (Notable)
Kassler	United States	Record snow depth	25.4 cm (10.0 in)	37 of 100 (Notable)
Moore Haven Lock 1	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Standish 4NE	United States	Record daily precipitation	36.6 mm (1.4 in)	37 of 100 (Notable)
N Platte Exp Farm	United States	Record snow depth	17.8 cm (7.0 in)	37 of 100 (Notable)
Franklin Sewage Plt	United States	Record daily precipitation	54.1 mm (2.1 in)	37 of 100 (Notable)
Yap Island WSO AP	Federated States of Micronesia	Record high maximum temperature	33.9 C (93.0 F)	36 of 100 (Notable)
Acatlan de Osorio (Smn)	Mexico	Record high minimum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Mansfield 5 W	United States	Record daily precipitation	25.9 mm (1.0 in)	36 of 100 (Notable)
Lewisburg Exp STN	United States	Record daily precipitation	34.8 mm (1.4 in)	36 of 100 (Notable)
Logan	United States	Record high minimum temperature	16.7 C (62.1 F)	36 of 100 (Notable)
Ouahigouya	Burkina Faso	Record low maximum temperature	30.1 C (86.2 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,030 records

Records set or tied on 31 October 2009 by type: Highest daily maximum 203, Lowest daily maximum 117, Highest daily minimum 267, Lowest daily minimum 88, Heaviest daily rainfall 301, Heaviest daily snowfall 15, Deepest snow cover 39.

Records on 31 October 2009 by type
Record type	Records
Highest daily maximum	203
Lowest daily maximum	117
Highest daily minimum	267
Lowest daily minimum	88
Heaviest daily rainfall	301
Heaviest daily snowfall	15
Deepest snow cover	39

Records on 31 October 2009 by timescale: all-time 2, monthly 45, daily 983.

How Much Records Were Beaten By

803 broken records

Margins by which the 803 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 297.9. Ties are not counted.

Top 20 by Significance

31 October 2009

Top 20 records on 31 October 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 October 2009	Blasillo, MX	all-time rain	517.9 mm (20.4 in)	297.9 mm (11.7 in)	11 years	67 of 100 (Major)
31 October 2009	Hawkesdale (Post Office), AU	daily rain	28.8 mm (1.1 in)	13.1 mm (0.5 in)	104 years	62 of 100 (Major)
31 October 2009	Pana, US	daily rain	60.2 mm (2.4 in)	27.2 mm (1.1 in)	96 years	60 of 100 (Major)
31 October 2009	Poblado C-22, MX	all-time rain	359.9 mm (14.2 in)	109.7 mm (4.3 in)	14 years	57 of 100 (Notable)
31 October 2009	Durham Ox, AU	daily rain	44.2 mm (1.7 in)	21.1 mm (0.8 in)	67 years	53 of 100 (Notable)
31 October 2009	Azoyu, MX	daily rain	104.9 mm (4.1 in)	95.0 mm (3.7 in)	20 years	50 of 100 (Notable)
31 October 2009	Ft Morgan, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	96 years	49 of 100 (Notable)
31 October 2009	Linjiang, CN	monthly rain	42.5 mm (1.7 in)	12.8 mm (0.5 in)	27 years	48 of 100 (Notable)
31 October 2009	Scottsville, US	daily rain	54.4 mm (2.1 in)	30.3 mm (1.2 in)	60 years	46 of 100 (Notable)
31 October 2009	Poblado C-15, MX	monthly rain	300.0 mm (11.8 in)	72.2 mm (2.8 in)	33 years	45 of 100 (Notable)
31 October 2009	Elkton, US	daily rain	60.7 mm (2.4 in)	34.8 mm (1.4 in)	48 years	44 of 100 (Notable)
31 October 2009	Kent City 2 SW, US	daily rain	49.0 mm (1.9 in)	30.7 mm (1.2 in)	18 years	44 of 100 (Notable)
31 October 2009	Lima, US	daily snow depth	20.3 cm (8.0 in)	5.1 cm (2.0 in)	90 years	44 of 100 (Notable)
31 October 2009	Mt Pleasant 1N, US	daily rain	50.8 mm (2.0 in)	38.9 mm (1.5 in)	52 years	44 of 100 (Notable)
31 October 2009	Grayling, US	daily rain	29.5 mm (1.2 in)	5.4 mm (0.21 in)	90 years	43 of 100 (Notable)
31 October 2009	John Glenn Intl AP, US	daily rain	30.7 mm (1.2 in)	19.3 mm (0.8 in)	48 years	43 of 100 (Notable)
31 October 2009	Ometepec (Cfe), MX	daily rain	72.9 mm (2.9 in)	63.5 mm (2.5 in)	42 years	42 of 100 (Notable)
31 October 2009	Arcadia, US	daily high max	32.8 C (91.0 F)	0.6 C (1.1 F)	108 years	42 of 100 (Notable)
31 October 2009	Polson, US	daily high min	8.9 C (48.0 F)	1.7 C (3.1 F)	95 years	42 of 100 (Notable)
31 October 2009	Harrisburg 12WNW, US	daily snow depth	22.9 cm (9.0 in)	7.7 cm (3.0 in)	80 years	42 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

1805 to 2009

Records set or tied on this calendar date in each year from 1805 to 2009. 2009 had 1,030 records.

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

Records on 10-31 in each year
Year	Records
1805	1
1811	2
1828	1
1836	1
1838	1
1839	1
1841	1
1845	1
1847	2
1848	1
1852	2
1856	1
1865	1
1868	1
1869	3
1873	2
1875	2
1876	1
1877	1
1878	1
1879	1
1880	1
1881	6
1883	1
1884	3
1886	1
1887	2
1888	3
1889	5
1891	3
1892	4
1893	3
1894	5
1895	4
1896	10
1897	1
1898	5
1899	4
1900	5
1901	4
1902	5
1903	5
1904	7
1905	21
1906	38
1907	22
1908	13
1909	15
1910	18
1911	32
1912	14
1913	39
1914	33
1915	11
1916	72
1917	67
1918	72
1919	112
1920	63
1921	22
1922	72
1923	359
1924	244
1925	405
1926	153
1927	183
1928	120
1929	234
1930	240
1931	178
1932	260
1933	796
1934	410
1935	981
1936	307
1937	335
1938	399
1939	415
1940	248
1941	536
1942	578
1943	213
1944	611
1945	287
1946	530
1947	371
1948	695
1949	831
1950	1,237
1951	527
1952	393
1953	303
1954	460
1955	427
1956	1,086
1957	392
1958	314
1959	484
1960	296
1961	511
1962	344
1963	631
1964	538
1965	340
1966	630
1967	748
1968	605
1969	531
1970	412
1971	992
1972	1,234
1973	581
1974	1,192
1975	827
1976	655
1977	616
1978	538
1979	1,130
1980	657
1981	497
1982	560
1983	782
1984	1,054
1985	632
1986	396
1987	1,002
1988	1,058
1989	857
1990	990
1991	3,294
1992	1,324
1993	2,926
1994	1,004
1995	1,051
1996	1,074
1997	1,553
1998	1,410
1999	997
2000	1,114
2001	1,218
2002	1,613
2003	1,167
2004	870
2005	1,048
2006	842
2007	613
2008	1,256
2009	1,030
2010	931
2011	746
2012	884
2013	623
2014	547
2015	691
2016	1,012
2017	437
2018	414
2019	2,501
2020	542
2021	469
2022	497
2023	960
2024	1,133
2025	314

Download the Data

Data for records on 2009-10-31: 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	774
50 to 100	19
100 to 150	6
150 to 200	3
200 to 250	0
250 to 300	1