Weather Records on 1 December 2009

927 weather records were set or tied worldwide on 1 December 2009. Highest significance: Weslaco, US.

Key Facts for 1 December 2009

On 1 December 2009, 927 weather records were set or tied at long-record stations worldwide.
413 were record highs and 191 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 58 monthly and 865 daily.
Weslaco set a daily record precipitation of 60.5 mm (2.4 in) on 1 December 2009.
Across 162 earlier years (1797 to 2025) the same calendar date averaged 481 records.

Record Map

927 stations

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

Weather records on 1 December 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Weslaco	United States	Record daily precipitation	60.5 mm (2.4 in)	74 of 100 (Major)
Harlingen	United States	Record daily precipitation	50.8 mm (2.0 in)	65 of 100 (Major)
El Refugio de Los Ibarra	Mexico	Record daily precipitation	62.0 mm (2.4 in)	62 of 100 (Major)
Raymondville	United States	Record daily precipitation	38.6 mm (1.5 in)	60 of 100 (Major)
Tartu-Toravere	Estonia	Record daily precipitation	26.3 mm (1.0 in)	57 of 100 (Notable)
Corpus Christi NAS	United States	Record daily precipitation	44.4 mm (1.7 in)	55 of 100 (Notable)
Ft Davis	United States	Record daily snowfall	23.6 cm (9.3 in)	54 of 100 (Notable)
Villa Guerrero	Mexico	Record daily precipitation	26.7 mm (1.1 in)	53 of 100 (Notable)
Mercedes 6 SSE	United States	Record daily precipitation	43.2 mm (1.7 in)	53 of 100 (Notable)
Kenai AP	United States	Record daily precipitation	29.5 mm (1.2 in)	53 of 100 (Notable)
Huajimic	Mexico	Record daily precipitation	37.6 mm (1.5 in)	51 of 100 (Notable)
Homer 8 NW	United States	Record daily precipitation	40.6 mm (1.6 in)	51 of 100 (Notable)
Carlsbad Caverns	United States	Record daily snowfall	17.8 cm (7.0 in)	50 of 100 (Notable)
Elk	United States	Record snow depth	48.3 cm (19.0 in)	50 of 100 (Notable)
San Jose Valle	Mexico	Record daily precipitation	37.3 mm (1.5 in)	49 of 100 (Notable)
San Juan Peyotan	Mexico	Record daily precipitation	45.5 mm (1.8 in)	49 of 100 (Notable)
Valentine	United States	Record daily snowfall	20.3 cm (8.0 in)	48 of 100 (Notable)
Elk	United States	Record daily snowfall	33.0 cm (13.0 in)	47 of 100 (Notable)
Houston William P Hobby AP	United States	Record daily precipitation	68.8 mm (2.7 in)	47 of 100 (Notable)
Paras	Mexico	Record daily precipitation	42.4 mm (1.7 in)	46 of 100 (Notable)
San Jose de Coronados	Mexico	Record daily precipitation	49.8 mm (2.0 in)	46 of 100 (Notable)
Skwentna	United States	Record daily precipitation	60.5 mm (2.4 in)	46 of 100 (Notable)
Griffith Airport AWS	Australia	Record daily precipitation	33.2 mm (1.3 in)	44 of 100 (Notable)
Ochoa	United States	Record daily snowfall	10.2 cm (4.0 in)	44 of 100 (Notable)
McCook	United States	Record daily precipitation	54.9 mm (2.2 in)	44 of 100 (Notable)
Mt Locke	United States	Record daily snowfall	7.6 cm (3.0 in)	44 of 100 (Notable)
Wiseman	United States	Record daily snowfall	12.7 cm (5.0 in)	44 of 100 (Notable)
Atotonilco El Alto	Mexico	Record low maximum temperature	15.0 C (59.0 F)	43 of 100 (Notable)
El Pinito	Mexico	Record daily precipitation	28.2 mm (1.1 in)	43 of 100 (Notable)
Laguna Seca	Mexico	Record daily precipitation	40.6 mm (1.6 in)	43 of 100 (Notable)
Caro Wwtp	United States	Record daily precipitation	66.0 mm (2.6 in)	43 of 100 (Notable)
Oktjabrskij-Gorodok	Russia	Record high minimum temperature	3.5 C (38.3 F)	42 of 100 (Notable)
Benavides #2	United States	Record daily precipitation	25.4 mm (1.0 in)	42 of 100 (Notable)
Zagreb-Gric	Croatia	Record high maximum temperature	16.2 C (61.2 F)	41 of 100 (Notable)
El Camalote	Mexico	Record daily precipitation	26.9 mm (1.1 in)	40 of 100 (Notable)
Paso de Arocha	Mexico	Record low maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Lynch	United States	Record high maximum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Falcon Dam	United States	Record daily precipitation	34.3 mm (1.4 in)	40 of 100 (Notable)
Sarita 7 E	United States	Record daily precipitation	30.0 mm (1.2 in)	40 of 100 (Notable)
Dutch Harbor	United States	Record snow depth	20.3 cm (8.0 in)	39 of 100 (Notable)
Victoria Rgnl AP	United States	Record daily precipitation	35.3 mm (1.4 in)	39 of 100 (Notable)
Te Kowai Exp STN	Australia	Record high maximum temperature	36.8 C (98.2 F)	38 of 100 (Notable)
Tepic (Obs)	Mexico	Record daily precipitation	37.8 mm (1.5 in)	38 of 100 (Notable)
Elk	United States	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
El Tizate	Mexico	Record daily precipitation	39.9 mm (1.6 in)	37 of 100 (Notable)
Pecs Pogany	Hungary	Record high minimum temperature	9.0 C (48.2 F)	36 of 100 (Notable)
Jerecuaro	Mexico	Record low maximum temperature	16.7 C (62.1 F)	36 of 100 (Notable)
Corrales	Mexico	Record high minimum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Vallecillo (Dge)	Mexico	Record daily precipitation	69.9 mm (2.8 in)	36 of 100 (Notable)
Charcas (Smn)	Mexico	Record daily precipitation	25.9 mm (1.0 in)	36 of 100 (Notable)
Trancoso	Mexico	Record daily precipitation	35.6 mm (1.4 in)	36 of 100 (Notable)
Ouesso	Congo (Brazzaville)	Record high maximum temperature	35.4 C (95.7 F)	35 of 100 (Notable)
Szeged	Hungary	Record high minimum temperature	11.0 C (51.8 F)	35 of 100 (Notable)
Aratichanguio	Mexico	Record high maximum temperature	41.7 C (107.1 F)	35 of 100 (Notable)
Nikolskoye/Beringa Ostrov	Russia	Record low maximum temperature	-6.3 C (20.7 F)	35 of 100 (Notable)
Verhnij_Baskuncak	Russia	Record high minimum temperature	6.2 C (43.2 F)	35 of 100 (Notable)
Candelaria	United States	Record daily precipitation	32.3 mm (1.3 in)	35 of 100 (Notable)
Corpus Christi	United States	Record daily precipitation	30.2 mm (1.2 in)	35 of 100 (Notable)
Homer AP	United States	Record daily precipitation	33.5 mm (1.3 in)	35 of 100 (Notable)
Palo Blanco	Mexico	Record daily precipitation	29.0 mm (1.1 in)	34 of 100 (Routine)

Counts by Type and Timescale

927 records

Records set or tied on 1 December 2009 by type: Highest daily maximum 172, Lowest daily maximum 156, Highest daily minimum 241, Lowest daily minimum 35, Heaviest daily rainfall 269, Heaviest daily snowfall 36, Deepest snow cover 18.

Records on 1 December 2009 by type
Record type	Records
Highest daily maximum	172
Lowest daily maximum	156
Highest daily minimum	241
Lowest daily minimum	35
Heaviest daily rainfall	269
Heaviest daily snowfall	36
Deepest snow cover	18

Records on 1 December 2009 by timescale: all-time 4, monthly 58, daily 865.

How Much Records Were Beaten By

743 broken records

Margins by which the 743 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 432.0. Ties are not counted.

Top 20 by Significance

1 December 2009

Top 20 records on 1 December 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 December 2009	Weslaco, US	daily rain	60.5 mm (2.4 in)	34.6 mm (1.4 in)	86 years	74 of 100 (Major)
1 December 2009	Harlingen, US	daily rain	50.8 mm (2.0 in)	38.1 mm (1.5 in)	72 years	65 of 100 (Major)
1 December 2009	El Refugio de Los Ibarra, MX	monthly rain	62.0 mm (2.4 in)	27.2 mm (1.1 in)	33 years	62 of 100 (Major)
1 December 2009	Raymondville, US	daily rain	38.6 mm (1.5 in)	19.5 mm (0.8 in)	86 years	60 of 100 (Major)
1 December 2009	Tartu-Toravere, EE	monthly rain	26.3 mm (1.0 in)	10.4 mm (0.4 in)	0 years	57 of 100 (Notable)
1 December 2009	Corpus Christi NAS, US	daily rain	44.4 mm (1.7 in)	34.5 mm (1.4 in)	54 years	55 of 100 (Notable)
1 December 2009	Ft Davis, US	all-time snowfall	23.6 cm (9.3 in)	0.7 cm (0.3 in)	78 years	54 of 100 (Notable)
1 December 2009	Villa Guerrero, MX	daily rain	26.7 mm (1.1 in)	23.9 mm (0.9 in)	40 years	53 of 100 (Notable)
1 December 2009	Mercedes 6 SSE, US	daily rain	43.2 mm (1.7 in)	17.3 mm (0.7 in)	86 years	53 of 100 (Notable)
1 December 2009	Kenai AP, US	daily rain	29.5 mm (1.2 in)	21.4 mm (0.8 in)	11 years	53 of 100 (Notable)
1 December 2009	Huajimic, MX	daily rain	37.6 mm (1.5 in)	37.3 mm (1.5 in)	44 years	51 of 100 (Notable)
1 December 2009	Homer 8 NW, US	daily rain	40.6 mm (1.6 in)	27.4 mm (1.1 in)	28 years	51 of 100 (Notable)
1 December 2009	Carlsbad Caverns, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	74 years	50 of 100 (Notable)
1 December 2009	Elk, US	daily snow depth	48.3 cm (19.0 in)	43.2 cm (17.0 in)	18 years	50 of 100 (Notable)
1 December 2009	San Jose Valle, MX	daily rain	37.3 mm (1.5 in)	37.3 mm (1.5 in)	40 years	49 of 100 (Notable)
1 December 2009	San Juan Peyotan, MX	daily rain	45.5 mm (1.8 in)	40.7 mm (1.6 in)	20 years	49 of 100 (Notable)
1 December 2009	Valentine, US	all-time snowfall	20.3 cm (8.0 in)	10.1 cm (4.0 in)	17 years	48 of 100 (Notable)
1 December 2009	Elk, US	daily snowfall	33.0 cm (13.0 in)	26.6 cm (10.5 in)	18 years	47 of 100 (Notable)
1 December 2009	Houston William P Hobby AP, US	daily rain	68.8 mm (2.7 in)	35.3 mm (1.4 in)	54 years	47 of 100 (Notable)
1 December 2009	Paras, MX	daily rain	42.4 mm (1.7 in)	32.2 mm (1.3 in)	8 years	46 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

1797 to 2009

Records set or tied on this calendar date in each year from 1797 to 2009. 2009 had 927 records.

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

Records on 12-01 in each year
Year	Records
1797	1
1805	1
1807	2
1810	1
1817	2
1821	1
1823	2
1831	1
1849	1
1856	3
1857	1
1858	1
1861	1
1863	1
1869	2
1871	1
1872	3
1873	6
1875	8
1876	4
1877	1
1879	7
1884	3
1885	3
1886	1
1887	2
1888	3
1889	2
1890	6
1891	1
1892	2
1893	1
1894	1
1895	4
1896	4
1897	10
1898	5
1899	4
1901	5
1902	7
1903	13
1904	4
1905	11
1906	3
1907	8
1908	40
1909	64
1910	39
1911	45
1912	37
1913	53
1914	142
1915	23
1916	29
1917	52
1918	32
1919	78
1920	192
1921	55
1922	85
1923	70
1924	135
1925	145
1926	115
1927	271
1928	85
1929	515
1930	128
1931	337
1932	383
1933	656
1934	667
1935	164
1936	433
1937	238
1938	159
1939	346
1940	300
1941	391
1942	424
1943	93
1944	478
1945	259
1946	224
1947	392
1948	252
1949	313
1950	437
1951	585
1952	762
1953	283
1954	308
1955	624
1956	338
1957	295
1958	531
1959	355
1960	258
1961	373
1962	1,073
1963	282
1964	1,181
1965	598
1966	995
1967	601
1968	883
1969	673
1970	1,299
1971	574
1972	843
1973	888
1974	1,339
1975	1,007
1976	1,294
1977	1,166
1978	777
1979	874
1980	1,019
1981	1,320
1982	1,759
1983	1,275
1984	513
1985	3,874
1986	803
1987	1,020
1988	538
1989	822
1990	514
1991	2,124
1992	552
1993	597
1994	717
1995	1,386
1996	1,448
1997	736
1998	1,698
1999	790
2000	777
2001	1,211
2002	637
2003	627
2004	1,033
2005	815
2006	2,866
2007	1,427
2008	879
2009	927
2010	1,991
2011	947
2012	1,027
2013	400
2014	677
2015	850
2016	384
2017	496
2018	807
2019	803
2020	567
2021	2,030
2022	584
2023	609
2024	636
2025	679

Download the Data

Data for records on 2009-12-01: 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).