Weather Records on 6 December 2009

866 weather records were set or tied worldwide on 6 December 2009. Highest significance: Hiroo, JP.

Key Facts for 6 December 2009

On 6 December 2009, 866 weather records were set or tied at long-record stations worldwide.
172 were record highs and 419 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 19 monthly and 846 daily.
Hiroo set a daily record precipitation of 69.6 mm (2.7 in) on 6 December 2009.
Across 164 earlier years (1804 to 2025) the same calendar date averaged 482 records.

Record Map

866 stations

866 station records on 6 December 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 6 December 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hiroo	Japan	Record daily precipitation	69.6 mm (2.7 in)	58 of 100 (Notable)
Agua Nueva	Mexico	Record daily precipitation	27.9 mm (1.1 in)	56 of 100 (Notable)
Gjerstad I Aust-Agder	Norway	Record daily precipitation	47.5 mm (1.9 in)	55 of 100 (Notable)
Zolotoj	Russia	Record daily precipitation	37.8 mm (1.5 in)	51 of 100 (Notable)
Rudnaja Pristan	Russia	Record daily precipitation	32.0 mm (1.3 in)	50 of 100 (Notable)
Manuel Avila Camacho	Mexico	Record low maximum temperature	23.9 C (75.0 F)	48 of 100 (Notable)
Herefoss	Norway	Record daily precipitation	43.0 mm (1.7 in)	48 of 100 (Notable)
Sovetskaja Gavan	Russia	Record daily precipitation	43.6 mm (1.7 in)	48 of 100 (Notable)
Tovdal	Norway	Record daily precipitation	38.4 mm (1.5 in)	45 of 100 (Notable)
Nelaug	Norway	Record daily precipitation	46.1 mm (1.8 in)	45 of 100 (Notable)
Preobrazhenie	Russia	Record daily precipitation	28.9 mm (1.1 in)	45 of 100 (Notable)
Everglades	United States	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Moorefield 1 SSE	United States	Record daily snowfall	12.7 cm (5.0 in)	45 of 100 (Notable)
N Bend SW Oregon Rgnl AP	United States	Record low minimum temperature	-3.9 C (25.0 F)	45 of 100 (Notable)
El Huizache	Mexico	Record daily precipitation	39.9 mm (1.6 in)	44 of 100 (Notable)
Postmyr I Drangedal	Norway	Record daily precipitation	29.6 mm (1.2 in)	44 of 100 (Notable)
Crescent City 3 NNW	United States	Record low minimum temperature	-3.9 C (25.0 F)	44 of 100 (Notable)
Hobson	United States	Record daily snowfall	15.2 cm (6.0 in)	44 of 100 (Notable)
Cheyenne	United States	Record daily snowfall	11.9 cm (4.7 in)	44 of 100 (Notable)
Ternej	Russia	Record daily precipitation	27.3 mm (1.1 in)	42 of 100 (Notable)
Sendai	Japan	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Union Springs 9 S	United States	Record low maximum temperature	5.6 C (42.1 F)	41 of 100 (Notable)
Hernando	United States	Record low minimum temperature	-6.7 C (19.9 F)	41 of 100 (Notable)
Orovada 3 W	United States	Record low minimum temperature	-22.8 C (-9.0 F)	41 of 100 (Notable)
Sacramento 5 ESE	United States	Record low minimum temperature	-2.2 C (28.0 F)	41 of 100 (Notable)
Lisboa Geofisica	Portugal	Record high minimum temperature	15.5 C (59.9 F)	40 of 100 (Notable)
Buena Vista 2S	United States	Record daily snowfall	14.7 cm (5.8 in)	40 of 100 (Notable)
Ft Collins	United States	Record daily snowfall	23.9 cm (9.4 in)	40 of 100 (Notable)
Elk	United States	Record snow depth	17.8 cm (7.0 in)	40 of 100 (Notable)
Scottsbluff W B Heilig Fld AP	United States	Record daily snowfall	18.5 cm (7.3 in)	40 of 100 (Notable)
Risor Brannstasjon	Norway	Record daily precipitation	35.5 mm (1.4 in)	39 of 100 (Notable)
Moroni	United States	Record low maximum temperature	-6.1 C (21.0 F)	39 of 100 (Notable)
Armeria	Mexico	Record low maximum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Tecolotlan (Dge)	Mexico	Record low maximum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Mexcaltitan	Mexico	Record daily precipitation	35.1 mm (1.4 in)	38 of 100 (Notable)
Boylefoss	Norway	Record daily precipitation	45.4 mm (1.8 in)	38 of 100 (Notable)
Niceville	United States	Record low maximum temperature	7.2 C (45.0 F)	38 of 100 (Notable)
Lahontan Dam	United States	Record low maximum temperature	-1.7 C (28.9 F)	38 of 100 (Notable)
Canyon Dam	United States	Record low minimum temperature	-12.8 C (9.0 F)	37 of 100 (Notable)
Santa Cruz	United States	Record low maximum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
El Chiflon	Mexico	Record low maximum temperature	23.3 C (73.9 F)	35 of 100 (Notable)
Ludlow 3 SSE	United States	Record daily snowfall	5.1 cm (2.0 in)	35 of 100 (Notable)
Atoyac	Mexico	Record low maximum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Kilegrend	Norway	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Paradise Valley 1 NW	United States	Record low minimum temperature	-22.8 C (-9.0 F)	34 of 100 (Routine)
The Poplars	United States	Record low maximum temperature	-7.2 C (19.0 F)	34 of 100 (Routine)
Marathon	United States	Record low maximum temperature	2.2 C (36.0 F)	34 of 100 (Routine)
Acajete	Mexico	Record low maximum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Georgetown Rs	United States	Record daily snowfall	47.0 cm (18.5 in)	33 of 100 (Routine)
Briggsdale	United States	Record daily snowfall	11.4 cm (4.5 in)	33 of 100 (Routine)
Bayview Model Basin	United States	Record low minimum temperature	-23.9 C (-11.0 F)	33 of 100 (Routine)
Alcove Dam	United States	Record snow depth	10.2 cm (4.0 in)	33 of 100 (Routine)
San Francisco Dwtn	United States	Record low minimum temperature	4.4 C (39.9 F)	33 of 100 (Routine)
Red Bluff Muni AP	United States	Record low minimum temperature	-5.0 C (23.0 F)	33 of 100 (Routine)
Coquimatlan	Mexico	Record low maximum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Peitas	Mexico	Record low maximum temperature	25.0 C (77.0 F)	32 of 100 (Routine)
Madrid	Mexico	Record low maximum temperature	25.6 C (78.1 F)	32 of 100 (Routine)
Wittmann 1SE	United States	Record low minimum temperature	-2.2 C (28.0 F)	32 of 100 (Routine)
Bandon 2 NNE	United States	Record low minimum temperature	-4.4 C (24.1 F)	32 of 100 (Routine)
Luray 5 E	United States	Record daily snowfall	14.0 cm (5.5 in)	32 of 100 (Routine)

Counts by Type and Timescale

866 records

Records set or tied on 6 December 2009 by type: Highest daily maximum 68, Lowest daily maximum 177, Highest daily minimum 104, Lowest daily minimum 242, Heaviest daily rainfall 176, Heaviest daily snowfall 75, Deepest snow cover 24.

Records on 6 December 2009 by type
Record type	Records
Highest daily maximum	68
Lowest daily maximum	177
Highest daily minimum	104
Lowest daily minimum	242
Heaviest daily rainfall	176
Heaviest daily snowfall	75
Deepest snow cover	24

Records on 6 December 2009 by timescale: all-time 1, monthly 19, daily 846.

How Much Records Were Beaten By

653 broken records

Margins by which the 653 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

6 December 2009

Top 20 records on 6 December 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 December 2009	Hiroo, JP	daily rain	69.6 mm (2.7 in)	57.3 mm (2.3 in)	44 years	58 of 100 (Notable)
6 December 2009	Agua Nueva, MX	daily rain	27.9 mm (1.1 in)	27.9 mm (1.1 in)	44 years	56 of 100 (Notable)
6 December 2009	Gjerstad I Aust-Agder, NO	daily rain	47.5 mm (1.9 in)	15.5 mm (0.6 in)	111 years	55 of 100 (Notable)
6 December 2009	Zolotoj, RU	daily rain	37.8 mm (1.5 in)	23.8 mm (0.9 in)	44 years	51 of 100 (Notable)
6 December 2009	Rudnaja Pristan, RU	daily rain	32.0 mm (1.3 in)	20.8 mm (0.8 in)	44 years	50 of 100 (Notable)
6 December 2009	Manuel Avila Camacho, MX	daily low max	23.9 C (75.0 F)	3.9 C (7.0 F)	82 years	48 of 100 (Notable)
6 December 2009	Herefoss, NO	daily rain	43.0 mm (1.7 in)	9.3 mm (0.37 in)	111 years	48 of 100 (Notable)
6 December 2009	Sovetskaja Gavan, RU	daily rain	43.6 mm (1.7 in)	22.2 mm (0.9 in)	38 years	48 of 100 (Notable)
6 December 2009	Tovdal, NO	daily rain	38.4 mm (1.5 in)	14.4 mm (0.6 in)	64 years	45 of 100 (Notable)
6 December 2009	Nelaug, NO	daily rain	46.1 mm (1.8 in)	27.1 mm (1.1 in)	32 years	45 of 100 (Notable)
6 December 2009	Preobrazhenie, RU	daily rain	28.9 mm (1.1 in)	13.9 mm (0.5 in)	44 years	45 of 100 (Notable)
6 December 2009	Everglades, US	daily rain	45.0 mm (1.8 in)	29.3 mm (1.2 in)	47 years	45 of 100 (Notable)
6 December 2009	Moorefield 1 SSE, US	daily snowfall	12.7 cm (5.0 in)	5.1 cm (2.0 in)	99 years	45 of 100 (Notable)
6 December 2009	N Bend SW Oregon Rgnl AP, US	daily low min	-3.9 C (25.0 F)	2.2 C (4.0 F)	104 years	45 of 100 (Notable)
6 December 2009	El Huizache, MX	daily rain	39.9 mm (1.6 in)	33.0 mm (1.3 in)	32 years	44 of 100 (Notable)
6 December 2009	Postmyr I Drangedal, NO	daily rain	29.6 mm (1.2 in)	9.0 mm (0.35 in)	72 years	44 of 100 (Notable)
6 December 2009	Crescent City 3 NNW, US	daily low min	-3.9 C (25.0 F)	2.8 C (5.0 F)	88 years	44 of 100 (Notable)
6 December 2009	Hobson, US	daily snowfall	15.2 cm (6.0 in)	3.8 cm (1.5 in)	87 years	44 of 100 (Notable)
6 December 2009	Cheyenne, US	daily snowfall	11.9 cm (4.7 in)	4.3 cm (1.7 in)	82 years	44 of 100 (Notable)
6 December 2009	Ternej, RU	daily rain	27.3 mm (1.1 in)	18.6 mm (0.7 in)	44 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

1804 to 2009

Records set or tied on this calendar date in each year from 1804 to 2009. 2009 had 866 records.

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

Records on 12-06 in each year
Year	Records
1804	1
1822	1
1825	1
1827	1
1829	2
1832	1
1836	1
1839	1
1840	1
1841	1
1842	1
1844	2
1848	1
1856	2
1859	1
1860	2
1861	1
1862	1
1865	1
1866	1
1868	7
1871	1
1872	1
1875	3
1876	1
1879	5
1880	1
1884	2
1886	3
1888	2
1889	1
1890	1
1891	8
1893	2
1895	3
1896	2
1897	1
1898	4
1899	7
1900	6
1901	5
1902	19
1903	7
1904	13
1905	4
1906	23
1907	10
1908	18
1909	26
1910	35
1911	9
1912	109
1913	14
1914	11
1915	63
1916	25
1917	22
1918	34
1919	30
1920	259
1921	20
1922	150
1923	145
1924	159
1925	189
1926	308
1927	107
1928	98
1929	92
1930	481
1931	178
1932	363
1933	346
1934	185
1935	283
1936	524
1937	958
1938	267
1939	918
1940	264
1941	231
1942	509
1943	378
1944	203
1945	241
1946	657
1947	178
1948	396
1949	137
1950	1,419
1951	1,591
1952	229
1953	533
1954	455
1955	345
1956	1,633
1957	362
1958	640
1959	379
1960	707
1961	197
1962	916
1963	391
1964	597
1965	420
1966	1,013
1967	310
1968	356
1969	810
1970	558
1971	545
1972	2,565
1973	482
1974	549
1975	637
1976	643
1977	1,480
1978	969
1979	809
1980	1,108
1981	937
1982	1,277
1983	1,232
1984	1,245
1985	1,087
1986	695
1987	978
1988	660
1989	798
1990	800
1991	743
1992	1,622
1993	485
1994	1,467
1995	1,456
1996	1,093
1997	953
1998	2,750
1999	1,079
2000	1,230
2001	1,520
2002	1,576
2003	1,303
2004	699
2005	1,233
2006	1,097
2007	1,538
2008	913
2009	866
2010	1,364
2011	1,327
2012	848
2013	2,182
2014	615
2015	768
2016	575
2017	402
2018	469
2019	374
2020	549
2021	676
2022	432
2023	1,271
2024	620
2025	640

Download the Data

Data for records on 2009-12-06: 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 25	591
25 to 50	41
50 to 75	11
75 to 100	5
100 to 125	4
125 to 150	0
150 to 175	0
175 to 200	1