Weather Records on 21 October 2009

713 weather records were set or tied worldwide on 21 October 2009. Highest significance: Las Animas, US.

Key Facts for 21 October 2009

On 21 October 2009, 713 weather records were set or tied at long-record stations worldwide.
206 were record highs and 178 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 697 daily.
Las Animas set a daily record precipitation of 50.3 mm (2.0 in) on 21 October 2009.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 418 records.

Record Map

713 stations

713 station records on 21 October 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Las Animas	United States	Record daily precipitation	50.3 mm (2.0 in)	79 of 100 (Major)
Trinidad	United States	Record daily snowfall	30.5 cm (12.0 in)	68 of 100 (Major)
La Junta Muni AP	United States	Record daily precipitation	48.0 mm (1.9 in)	55 of 100 (Notable)
Portales	United States	Record daily precipitation	51.6 mm (2.0 in)	54 of 100 (Notable)
El Vado Dam	United States	Record daily precipitation	25.7 mm (1.0 in)	51 of 100 (Notable)
Sherman	United States	Record daily precipitation	92.7 mm (3.6 in)	51 of 100 (Notable)
Trinidad	United States	Record snow depth	17.8 cm (7.0 in)	50 of 100 (Notable)
Arnold	United States	Record daily snowfall	12.7 cm (5.0 in)	50 of 100 (Notable)
San Dimas	Mexico	Record daily precipitation	49.8 mm (2.0 in)	49 of 100 (Notable)
El Refugio de Los Ibarra	Mexico	Record daily precipitation	27.9 mm (1.1 in)	49 of 100 (Notable)
Stanley 2 NNE	United States	Record daily precipitation	38.4 mm (1.5 in)	49 of 100 (Notable)
Craibstone	United Kingdom	Record daily precipitation	73.1 mm (2.9 in)	48 of 100 (Notable)
Caon Fernandez	Mexico	Record daily precipitation	32.3 mm (1.3 in)	47 of 100 (Notable)
Dyce	United Kingdom	Record daily precipitation	61.6 mm (2.4 in)	47 of 100 (Notable)
Cheyenne Wells 2NE	United States	Record daily precipitation	43.2 mm (1.7 in)	47 of 100 (Notable)
Bird City 10S	United States	Record daily snowfall	10.2 cm (4.0 in)	47 of 100 (Notable)
Armeria	Mexico	Record daily precipitation	96.3 mm (3.8 in)	46 of 100 (Notable)
Pueblo Mem AP	United States	Record daily precipitation	32.5 mm (1.3 in)	45 of 100 (Notable)
Trinidad	United States	Record daily precipitation	30.0 mm (1.2 in)	44 of 100 (Notable)
Rocky Ford 2 SE	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Artichoke Lake 1 E	United States	Record daily precipitation	26.7 mm (1.1 in)	43 of 100 (Notable)
Mineral Wells AP	United States	Record daily precipitation	84.3 mm (3.3 in)	43 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record high maximum temperature	34.6 C (94.3 F)	42 of 100 (Notable)
Magdalena	Mexico	Record high minimum temperature	22.2 C (72.0 F)	42 of 100 (Notable)
Rocky Ford 2 SE	United States	Record daily snowfall	14.0 cm (5.5 in)	42 of 100 (Notable)
Creighton	United States	Record daily precipitation	38.1 mm (1.5 in)	42 of 100 (Notable)
Melrose	United States	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Rochester Intl AP	United States	Record daily precipitation	39.9 mm (1.6 in)	42 of 100 (Notable)
Lebanon 2W	United States	Record daily precipitation	32.3 mm (1.3 in)	41 of 100 (Notable)
La Crosse Muni AP	United States	Record daily precipitation	40.6 mm (1.6 in)	41 of 100 (Notable)
Santiago	Mexico	Record low maximum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
Madrid	Mexico	Record daily precipitation	103.6 mm (4.1 in)	40 of 100 (Notable)
Tecoman (Dge)	Mexico	Record daily precipitation	74.9 mm (2.9 in)	40 of 100 (Notable)
Neozhidannyj	Russia	Record daily precipitation	26.0 mm (1.0 in)	40 of 100 (Notable)
Yajlju	Russia	Record daily precipitation	27.4 mm (1.1 in)	40 of 100 (Notable)
Goodland	United States	Record daily precipitation	47.5 mm (1.9 in)	40 of 100 (Notable)
Arroyo Frio	Mexico	Record low maximum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Campo 7 S	United States	Record daily precipitation	63.0 mm (2.5 in)	39 of 100 (Notable)
Hill City Muni AP	United States	Record daily precipitation	36.6 mm (1.4 in)	39 of 100 (Notable)
Rocky Ford 2 SE	United States	Record snow depth	10.2 cm (4.0 in)	38 of 100 (Notable)
Spencer 1 N	United States	Record daily precipitation	25.7 mm (1.0 in)	38 of 100 (Notable)
La Desembocada	Mexico	Record daily precipitation	45.0 mm (1.8 in)	37 of 100 (Notable)
Borinquen AP	Puerto Rico [United States]	Record high minimum temperature	26.1 C (79.0 F)	37 of 100 (Notable)
Soria	Spain	Record daily precipitation	32.8 mm (1.3 in)	37 of 100 (Notable)
Moose Lake 1 SSE	United States	Record daily precipitation	26.7 mm (1.1 in)	37 of 100 (Notable)
Ellsworth 1E	United States	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Tacony 13 SE	United States	Record daily precipitation	29.7 mm (1.2 in)	36 of 100 (Notable)
Walsh 1 W	United States	Record daily precipitation	84.6 mm (3.3 in)	36 of 100 (Notable)
Lima	United States	Record snow depth	20.3 cm (8.0 in)	36 of 100 (Notable)
Arnold	United States	Record snow depth	12.7 cm (5.0 in)	36 of 100 (Notable)
House	United States	Record daily precipitation	42.7 mm (1.7 in)	36 of 100 (Notable)
Lampasas	United States	Record daily precipitation	69.9 mm (2.8 in)	36 of 100 (Notable)
Trinidad AP	United States	Record daily precipitation	42.4 mm (1.7 in)	36 of 100 (Notable)
Brocken	Germany	Record snow depth	28.0 cm (11.0 in)	35 of 100 (Notable)
San Miguel Chimalapa	Mexico	Record low minimum temperature	1.7 C (35.1 F)	35 of 100 (Notable)
Burgos-Villafria	Spain	Record daily precipitation	34.5 mm (1.4 in)	34 of 100 (Routine)
Pampa #2	United States	Record daily precipitation	48.0 mm (1.9 in)	34 of 100 (Routine)
La Cruz	Mexico	Record daily precipitation	111.8 mm (4.4 in)	33 of 100 (Routine)
Walsenburg 1 NW	United States	Record daily precipitation	29.0 mm (1.1 in)	33 of 100 (Routine)
Bird City 10S	United States	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)

Counts by Type and Timescale

713 records

Records set or tied on 21 October 2009 by type: Highest daily maximum 89, Lowest daily maximum 91, Highest daily minimum 117, Lowest daily minimum 87, Heaviest daily rainfall 299, Heaviest daily snowfall 13, Deepest snow cover 17.

Records on 21 October 2009 by type
Record type	Records
Highest daily maximum	89
Lowest daily maximum	91
Highest daily minimum	117
Lowest daily minimum	87
Heaviest daily rainfall	299
Heaviest daily snowfall	13
Deepest snow cover	17

Records on 21 October 2009 by timescale: all-time 0, monthly 16, daily 697.

How Much Records Were Beaten By

588 broken records

Margins by which the 588 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

21 October 2009

Top 20 records on 21 October 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 2009	Las Animas, US	daily rain	50.3 mm (2.0 in)	35.6 mm (1.4 in)	98 years	79 of 100 (Major)
21 October 2009	Trinidad, US	daily snowfall	30.5 cm (12.0 in)	20.3 cm (8.0 in)	103 years	68 of 100 (Major)
21 October 2009	La Junta Muni AP, US	daily rain	48.0 mm (1.9 in)	32.8 mm (1.3 in)	30 years	55 of 100 (Notable)
21 October 2009	Portales, US	daily rain	51.6 mm (2.0 in)	21.6 mm (0.9 in)	91 years	54 of 100 (Notable)
21 October 2009	El Vado Dam, US	daily rain	25.7 mm (1.0 in)	6.4 mm (0.25 in)	103 years	51 of 100 (Notable)
21 October 2009	Sherman, US	daily rain	92.7 mm (3.6 in)	32.8 mm (1.3 in)	90 years	51 of 100 (Notable)
21 October 2009	Trinidad, US	daily snow depth	17.8 cm (7.0 in)	7.6 cm (3.0 in)	103 years	50 of 100 (Notable)
21 October 2009	Arnold, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	66 years	50 of 100 (Notable)
21 October 2009	San Dimas, MX	daily rain	49.8 mm (2.0 in)	45.5 mm (1.8 in)	36 years	49 of 100 (Notable)
21 October 2009	El Refugio de Los Ibarra, MX	daily rain	27.9 mm (1.1 in)	27.9 mm (1.1 in)	42 years	49 of 100 (Notable)
21 October 2009	Stanley 2 NNE, US	daily rain	38.4 mm (1.5 in)	29.5 mm (1.2 in)	40 years	49 of 100 (Notable)
21 October 2009	Craibstone, GB	monthly rain	73.1 mm (2.9 in)	20.3 mm (0.8 in)	6 years	48 of 100 (Notable)
21 October 2009	Caon Fernandez, MX	daily rain	32.3 mm (1.3 in)	26.5 mm (1.0 in)	23 years	47 of 100 (Notable)
21 October 2009	Dyce, GB	daily rain	61.6 mm (2.4 in)	29.2 mm (1.1 in)	7 years	47 of 100 (Notable)
21 October 2009	Cheyenne Wells 2NE, US	daily rain	43.2 mm (1.7 in)	33.3 mm (1.3 in)	30 years	47 of 100 (Notable)
21 October 2009	Bird City 10S, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	92 years	47 of 100 (Notable)
21 October 2009	Armeria, MX	daily rain	96.3 mm (3.8 in)	81.3 mm (3.2 in)	52 years	46 of 100 (Notable)
21 October 2009	Pueblo Mem AP, US	daily rain	32.5 mm (1.3 in)	23.4 mm (0.9 in)	30 years	45 of 100 (Notable)
21 October 2009	Trinidad, US	daily rain	30.0 mm (1.2 in)	11.7 mm (0.5 in)	68 years	44 of 100 (Notable)
21 October 2009	Rocky Ford 2 SE, US	daily rain	50.8 mm (2.0 in)	10.7 mm (0.4 in)	68 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

1795 to 2009

Records set or tied on this calendar date in each year from 1795 to 2009. 2009 had 713 records.

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

Records on 10-21 in each year
Year	Records
1795	1
1802	2
1805	1
1808	1
1810	1
1834	1
1835	1
1840	1
1845	1
1847	1
1850	1
1851	2
1854	1
1859	1
1863	1
1864	1
1866	3
1867	1
1868	3
1869	2
1871	1
1872	1
1873	1
1874	1
1876	4
1877	2
1878	1
1880	3
1881	1
1883	1
1886	1
1888	2
1889	2
1890	3
1891	6
1892	6
1893	1
1894	1
1895	2
1896	5
1898	6
1899	3
1900	2
1901	9
1902	2
1903	3
1904	30
1905	15
1906	11
1907	35
1908	35
1909	19
1910	21
1911	10
1912	18
1913	59
1914	35
1915	43
1916	70
1917	208
1918	18
1919	102
1920	149
1921	58
1922	78
1923	81
1924	389
1925	150
1926	77
1927	187
1928	78
1929	200
1930	492
1931	217
1932	165
1933	733
1934	407
1935	707
1936	407
1937	132
1938	121
1939	491
1940	537
1941	644
1942	258
1943	421
1944	367
1945	538
1946	297
1947	977
1948	266
1949	1,015
1950	438
1951	382
1952	848
1953	1,579
1954	279
1955	481
1956	276
1957	511
1958	322
1959	410
1960	408
1961	553
1962	359
1963	725
1964	457
1965	465
1966	425
1967	472
1968	174
1969	881
1970	548
1971	498
1972	813
1973	464
1974	866
1975	509
1976	1,467
1977	451
1978	616
1979	1,958
1980	378
1981	667
1982	870
1983	786
1984	1,872
1985	776
1986	814
1987	852
1988	696
1989	1,668
1990	807
1991	877
1992	1,095
1993	845
1994	670
1995	1,120
1996	1,581
1997	915
1998	711
1999	688
2000	771
2001	610
2002	1,241
2003	2,066
2004	1,674
2005	949
2006	1,057
2007	916
2008	610
2009	713
2010	710
2011	662
2012	703
2013	440
2014	716
2015	493
2016	734
2017	750
2018	440
2019	757
2020	1,135
2021	574
2022	629
2023	890
2024	1,138
2025	364

Download the Data

Data for records on 2009-10-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 50	565
50 to 100	15
100 to 150	7
150 to 200	0
200 to 250	1