Weather Records on 9 August 2009

1,028 weather records were set or tied worldwide on 9 August 2009. Highest significance: Owosso Wwtp, US.

Key Facts for 9 August 2009

On 9 August 2009, 1,028 weather records were set or tied at long-record stations worldwide.
432 were record highs and 445 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 29 monthly and 998 daily.
Owosso Wwtp set a daily record precipitation of 85.9 mm (3.4 in) on 9 August 2009.
Across 156 earlier years (1798 to 2026) the same calendar date averaged 471 records.

Record Map

1,028 stations

1,028 station records on 9 August 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 August 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Owosso Wwtp	United States	Record daily precipitation	85.9 mm (3.4 in)	71 of 100 (Major)
Shimizu	Japan	Record daily precipitation	303.0 mm (11.9 in)	58 of 100 (Notable)
Pontiac Wwtp	United States	Record daily precipitation	62.2 mm (2.4 in)	53 of 100 (Notable)
Tadotsu	Japan	Record daily precipitation	81.0 mm (3.2 in)	52 of 100 (Notable)
Greeley Unc	United States	Record daily precipitation	57.7 mm (2.3 in)	52 of 100 (Notable)
Lahontan Dam	United States	Record low maximum temperature	20.0 C (68.0 F)	52 of 100 (Notable)
Page AP	United States	Record low minimum temperature	8.9 C (48.0 F)	51 of 100 (Notable)
Williamston 3NE	United States	Record daily precipitation	51.8 mm (2.0 in)	50 of 100 (Notable)
Sodankyla AWS	Finland	Record high maximum temperature	28.7 C (83.7 F)	49 of 100 (Notable)
Paonia 1SW	United States	Record low minimum temperature	7.8 C (46.0 F)	48 of 100 (Notable)
Eureka	United States	Record low maximum temperature	18.3 C (64.9 F)	48 of 100 (Notable)
Tsuyama	Japan	Record daily precipitation	75.9 mm (3.0 in)	47 of 100 (Notable)
Horinsk	Russia	Record daily precipitation	42.2 mm (1.7 in)	47 of 100 (Notable)
Dalton	United States	Record daily precipitation	58.4 mm (2.3 in)	47 of 100 (Notable)
Montello 2NE	United States	Record low maximum temperature	20.0 C (68.0 F)	47 of 100 (Notable)
Ruby Lake Nwr	United States	Record low maximum temperature	18.3 C (64.9 F)	47 of 100 (Notable)
Dividalen	Norway	Record daily precipitation	29.8 mm (1.2 in)	46 of 100 (Notable)
Mancos 1SW	United States	Record low minimum temperature	1.7 C (35.1 F)	46 of 100 (Notable)
Canon City	United States	Record low minimum temperature	8.3 C (46.9 F)	45 of 100 (Notable)
Saint Johns	United States	Record daily precipitation	71.1 mm (2.8 in)	45 of 100 (Notable)
Molina de Aragon	Spain	Record daily precipitation	41.2 mm (1.6 in)	44 of 100 (Notable)
Culver City	United States	Record low minimum temperature	7.8 C (46.0 F)	44 of 100 (Notable)
Dulce	United States	Record low minimum temperature	-0.6 C (30.9 F)	44 of 100 (Notable)
Meeker	United States	Record low minimum temperature	1.7 C (35.1 F)	43 of 100 (Notable)
Alma	United States	Record daily precipitation	63.8 mm (2.5 in)	43 of 100 (Notable)
McGill	United States	Record low minimum temperature	2.8 C (37.0 F)	43 of 100 (Notable)
Hamburg	United States	Record daily precipitation	54.6 mm (2.1 in)	43 of 100 (Notable)
Fuzhou	China	Record daily precipitation	135.6 mm (5.3 in)	42 of 100 (Notable)
Sodankyla Lokka	Finland	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Calcutta/Dum Dum	India	Record daily precipitation	113.0 mm (4.4 in)	42 of 100 (Notable)
Keams Canyon	United States	Record low minimum temperature	4.4 C (39.9 F)	42 of 100 (Notable)
Aztec Ruins Nm	United States	Record low minimum temperature	7.2 C (45.0 F)	42 of 100 (Notable)
Manti	United States	Record low minimum temperature	6.1 C (43.0 F)	42 of 100 (Notable)
Sukumo	Japan	Record daily precipitation	193.0 mm (7.6 in)	41 of 100 (Notable)
Los Altares	Mexico	Record high minimum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Manassa	United States	Record low minimum temperature	1.7 C (35.1 F)	41 of 100 (Notable)
Princeton	United States	Record high minimum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Jemez Springs	United States	Record low minimum temperature	9.4 C (48.9 F)	41 of 100 (Notable)
Tierra Amarilla 4 N	United States	Record low minimum temperature	1.1 C (34.0 F)	41 of 100 (Notable)
Mexticacan	Mexico	Record daily precipitation	69.9 mm (2.8 in)	40 of 100 (Notable)
Petrovskij Zavod	Russia	Record daily precipitation	26.2 mm (1.0 in)	40 of 100 (Notable)
Kamennaja-Step	Russia	Record low maximum temperature	17.3 C (63.1 F)	40 of 100 (Notable)
Sotchi	Russia	Record low minimum temperature	15.5 C (59.9 F)	40 of 100 (Notable)
Westcliffe	United States	Record low minimum temperature	1.7 C (35.1 F)	40 of 100 (Notable)
Mtn Dell Dam	United States	Record low maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Mediterranee	France	Record daily precipitation	29.5 mm (1.2 in)	39 of 100 (Notable)
Magdalena	Mexico	Record high minimum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Las Fuentes	Mexico	Record daily precipitation	37.8 mm (1.5 in)	39 of 100 (Notable)
Grace	United States	Record low maximum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
McCammon	United States	Record low maximum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Oak City	United States	Record low maximum temperature	25.6 C (78.1 F)	39 of 100 (Notable)
Inari Angeli	Finland	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Khlong Yai	Thailand	Record high minimum temperature	27.5 C (81.5 F)	38 of 100 (Notable)
Del Norte 3ENE	United States	Record low minimum temperature	1.7 C (35.1 F)	38 of 100 (Notable)
Lovelock	United States	Record low maximum temperature	28.3 C (82.9 F)	38 of 100 (Notable)
McGill	United States	Record low maximum temperature	20.6 C (69.1 F)	38 of 100 (Notable)
Roscoe	United States	Record low minimum temperature	13.3 C (55.9 F)	38 of 100 (Notable)
Alta	United States	Record low maximum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Pustunich	Mexico	Record high minimum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Falls Village	United States	Record low maximum temperature	22.2 C (72.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

1,028 records

Records set or tied on 9 August 2009 by type: Highest daily maximum 168, Lowest daily maximum 219, Highest daily minimum 264, Lowest daily minimum 226, Heaviest daily rainfall 151.

Records on 9 August 2009 by type
Record type	Records
Highest daily maximum	168
Lowest daily maximum	219
Highest daily minimum	264
Lowest daily minimum	226
Heaviest daily rainfall	151
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 August 2009 by timescale: all-time 1, monthly 29, daily 998.

How Much Records Were Beaten By

714 broken records

Margins by which the 714 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 236.2. Ties are not counted.

Top 20 by Significance

9 August 2009

Top 20 records on 9 August 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 August 2009	Owosso Wwtp, US	daily rain	85.9 mm (3.4 in)	47.8 mm (1.9 in)	72 years	71 of 100 (Major)
9 August 2009	Shimizu, JP	daily rain	303.0 mm (11.9 in)	236.2 mm (9.3 in)	46 years	58 of 100 (Notable)
9 August 2009	Pontiac Wwtp, US	daily rain	62.2 mm (2.4 in)	30.4 mm (1.2 in)	47 years	53 of 100 (Notable)
9 August 2009	Tadotsu, JP	daily rain	81.0 mm (3.2 in)	56.6 mm (2.2 in)	47 years	52 of 100 (Notable)
9 August 2009	Greeley Unc, US	daily rain	57.7 mm (2.3 in)	45.0 mm (1.8 in)	28 years	52 of 100 (Notable)
9 August 2009	Lahontan Dam, US	daily low max	20.0 C (68.0 F)	6.7 C (12.1 F)	84 years	52 of 100 (Notable)
9 August 2009	Page AP, US	daily low min	8.9 C (48.0 F)	8.3 C (14.9 F)	42 years	51 of 100 (Notable)
9 August 2009	Williamston 3NE, US	daily rain	51.8 mm (2.0 in)	21.6 mm (0.9 in)	66 years	50 of 100 (Notable)
9 August 2009	Sodankyla AWS, FI	monthly high max	28.7 C (83.7 F)	0.1 C (0.2 F)	96 years	49 of 100 (Notable)
9 August 2009	Paonia 1SW, US	daily low min	7.8 C (46.0 F)	2.2 C (4.0 F)	96 years	48 of 100 (Notable)
9 August 2009	Eureka, US	daily low max	18.3 C (64.9 F)	5.0 C (9.0 F)	83 years	48 of 100 (Notable)
9 August 2009	Tsuyama, JP	daily rain	75.9 mm (3.0 in)	46.5 mm (1.8 in)	47 years	47 of 100 (Notable)
9 August 2009	Horinsk, RU	daily rain	42.2 mm (1.7 in)	17.0 mm (0.7 in)	64 years	47 of 100 (Notable)
9 August 2009	Dalton, US	daily rain	58.4 mm (2.3 in)	12.9 mm (0.5 in)	78 years	47 of 100 (Notable)
9 August 2009	Montello 2NE, US	daily low max	20.0 C (68.0 F)	6.7 C (12.1 F)	66 years	47 of 100 (Notable)
9 August 2009	Ruby Lake Nwr, US	daily low max	18.3 C (64.9 F)	6.7 C (12.1 F)	64 years	47 of 100 (Notable)
9 August 2009	Dividalen, NO	daily rain	29.8 mm (1.2 in)	14.5 mm (0.6 in)	27 years	46 of 100 (Notable)
9 August 2009	Mancos 1SW, US	daily low min	1.7 C (35.1 F)	2.2 C (4.0 F)	96 years	46 of 100 (Notable)
9 August 2009	Canon City, US	daily low min	8.3 C (46.9 F)	1.7 C (3.1 F)	106 years	45 of 100 (Notable)
9 August 2009	Saint Johns, US	daily rain	71.1 mm (2.8 in)	27.2 mm (1.1 in)	46 years	45 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

1798 to 2009

Records set or tied on this calendar date in each year from 1798 to 2009. 2009 had 1,028 records.

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

Records on 08-09 in each year
Year	Records
1798	2
1800	1
1838	1
1845	3
1856	1
1859	3
1861	1
1863	2
1868	1
1870	1
1871	1
1873	1
1875	1
1878	1
1881	3
1884	2
1886	1
1887	1
1888	1
1889	1
1890	1
1891	4
1892	4
1893	3
1894	3
1895	1
1896	3
1897	7
1898	12
1899	4
1900	8
1901	3
1902	3
1903	6
1904	9
1905	5
1906	15
1907	9
1908	9
1909	51
1910	16
1911	44
1912	47
1913	76
1914	21
1915	61
1916	37
1917	46
1918	210
1919	49
1920	289
1921	36
1922	70
1923	73
1924	143
1925	307
1926	142
1927	391
1928	220
1929	127
1930	570
1931	399
1932	194
1933	250
1934	654
1935	587
1936	519
1937	351
1938	379
1939	480
1940	455
1941	372
1942	527
1943	366
1944	647
1945	365
1946	307
1947	544
1948	440
1949	715
1950	407
1951	405
1952	317
1953	363
1954	377
1955	433
1956	278
1957	347
1958	417
1959	453
1960	459
1961	347
1962	636
1963	500
1964	755
1965	632
1966	568
1967	457
1968	1,037
1969	527
1970	751
1971	543
1972	1,089
1973	547
1974	660
1975	790
1976	883
1977	453
1978	784
1979	630
1980	945
1981	941
1982	935
1983	839
1984	683
1985	714
1986	509
1987	927
1988	625
1989	2,082
1990	799
1991	988
1992	1,699
1993	702
1994	1,097
1995	1,417
1996	864
1997	1,446
1998	969
1999	1,370
2000	1,237
2001	1,485
2002	1,167
2003	1,344
2004	941
2005	1,001
2006	828
2007	1,687
2008	667
2009	1,028
2010	1,393
2011	1,177
2012	843
2013	761
2014	531
2015	595
2016	634
2017	773
2018	972
2019	717
2020	643
2021	523
2022	793
2023	820
2024	952
2025	799
2026	1,019

Download the Data

Data for records on 2009-08-09: 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	708
50 to 100	5
100 to 150	0
150 to 200	0
200 to 250	1