Weather Records on 11 August 2009

836 weather records were set or tied worldwide on 11 August 2009. Highest significance: Manoa 712.1, US.

Key Facts for 11 August 2009

On 11 August 2009, 836 weather records were set or tied at long-record stations worldwide.
467 were record highs and 181 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 16 monthly and 815 daily.
Manoa 712.1 set a daily record precipitation of 68.8 mm (2.7 in) on 11 August 2009.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 458 records.

Record Map

836 stations

836 station records on 11 August 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Manoa 712.1	United States	Record daily precipitation	68.8 mm (2.7 in)	76 of 100 (Major)
Morrilton	United States	Record daily precipitation	96.8 mm (3.8 in)	67 of 100 (Major)
Kiruna	Sweden	Record daily precipitation	45.0 mm (1.8 in)	61 of 100 (Major)
Magdalena	Mexico	Record high minimum temperature	22.8 C (73.0 F)	60 of 100 (Major)
Ponca City	United States	Record daily precipitation	42.9 mm (1.7 in)	58 of 100 (Notable)
Cranbrook (Cranbrook House)	Australia	Record daily precipitation	70.4 mm (2.8 in)	57 of 100 (Notable)
Hamakuapoko 485	United States	Record daily precipitation	36.1 mm (1.4 in)	57 of 100 (Notable)
Tupelo Rgnl AP	United States	Record daily precipitation	85.6 mm (3.4 in)	56 of 100 (Notable)
Bardufoss	Norway	Record daily precipitation	31.7 mm (1.2 in)	51 of 100 (Notable)
Prescott 2 NNW	United States	Record daily precipitation	111.8 mm (4.4 in)	50 of 100 (Notable)
Gonzalez	Mexico	Record low minimum temperature	16.7 C (62.1 F)	49 of 100 (Notable)
Tuba City	United States	Record low minimum temperature	8.9 C (48.0 F)	49 of 100 (Notable)
Animas 3ESE	United States	Record high minimum temperature	28.3 C (82.9 F)	49 of 100 (Notable)
Diredawa	Ethiopia	Record high maximum temperature	43.5 C (110.3 F)	48 of 100 (Notable)
Nemours (Ghazaouet)	Algeria	Record high minimum temperature	25.8 C (78.4 F)	47 of 100 (Notable)
Paiko Drive 723.4	United States	Record daily precipitation	29.7 mm (1.2 in)	47 of 100 (Notable)
Saint Leo	United States	Record high maximum temperature	37.8 C (100.0 F)	45 of 100 (Notable)
Appleton City	United States	Record daily precipitation	66.0 mm (2.6 in)	45 of 100 (Notable)
Mackenzie	United States	Record daily precipitation	36.1 mm (1.4 in)	45 of 100 (Notable)
Blaine	United States	Record low maximum temperature	16.7 C (62.1 F)	45 of 100 (Notable)
Columbus Metro AP	United States	Record daily precipitation	58.9 mm (2.3 in)	45 of 100 (Notable)
Marshall	United States	Record daily precipitation	40.6 mm (1.6 in)	44 of 100 (Notable)
Greenwood	United States	Record high minimum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Fayetteville (Pwc)	United States	Record high minimum temperature	25.6 C (78.1 F)	43 of 100 (Notable)
Cloverdale	United States	Record daily precipitation	26.7 mm (1.1 in)	43 of 100 (Notable)
Murray Lagoon (Hawks Nest)	Australia	Record daily precipitation	36.8 mm (1.4 in)	42 of 100 (Notable)
Paradise	United States	Record high minimum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Kaycee	United States	Record low minimum temperature	0.6 C (33.1 F)	41 of 100 (Notable)
Pleasant Mt 1 W	United States	Record daily precipitation	50.0 mm (2.0 in)	40 of 100 (Notable)
Clearbrook	United States	Record daily precipitation	30.5 mm (1.2 in)	40 of 100 (Notable)
Lake Leake (Elizabeth River)	Australia	Record daily precipitation	55.6 mm (2.2 in)	39 of 100 (Notable)
Presa la Calera	Mexico	Record low minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Ash Mtn	United States	Record low minimum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Osceola	United States	Record daily precipitation	94.2 mm (3.7 in)	39 of 100 (Notable)
Babb 6 NE	United States	Record high minimum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Espanola	United States	Record low minimum temperature	6.1 C (43.0 F)	39 of 100 (Notable)
Mercedes 6 SSE	United States	Record high minimum temperature	26.1 C (79.0 F)	39 of 100 (Notable)
Atzalan	Mexico	Record low minimum temperature	6.7 C (44.1 F)	38 of 100 (Notable)
Wooster Exp STN	United States	Record daily precipitation	75.9 mm (3.0 in)	38 of 100 (Notable)
Newhalem	United States	Record daily precipitation	32.8 mm (1.3 in)	38 of 100 (Notable)
San Isidro	Mexico	Record daily precipitation	63.8 mm (2.5 in)	36 of 100 (Notable)
Zacatlan	Mexico	Record low minimum temperature	3.9 C (39.0 F)	36 of 100 (Notable)
De Funiak Springs 1 E	United States	Record high minimum temperature	24.4 C (75.9 F)	36 of 100 (Notable)
Salvatierra	Mexico	Record high maximum temperature	31.7 C (89.1 F)	35 of 100 (Notable)
San Diego de Alejandria	Mexico	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Konstantinovka	Russia	Record daily precipitation	61.1 mm (2.4 in)	34 of 100 (Routine)
Mt Wx	United States	Record high minimum temperature	22.8 C (73.0 F)	34 of 100 (Routine)
Litang	China	Record daily precipitation	36.2 mm (1.4 in)	33 of 100 (Routine)
Anadyr	Russia	Record high maximum temperature	21.8 C (71.2 F)	33 of 100 (Routine)
Skovorodino	Russia	Record high minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Blaiken	Sweden	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Clifton	United States	Record high minimum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Tarboro 1 S	United States	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Columbia UNIV of Sc	United States	Record high minimum temperature	29.4 C (84.9 F)	33 of 100 (Routine)
Tolt S Fk Rsvr	United States	Record daily precipitation	31.0 mm (1.2 in)	33 of 100 (Routine)
Kuusiku	Estonia	Record daily precipitation	27.7 mm (1.1 in)	32 of 100 (Routine)
Danmarkshavn	Greenland [Denmark]	Record low minimum temperature	-6.6 C (20.1 F)	32 of 100 (Routine)
Buffalo 2N	United States	Record daily precipitation	58.7 mm (2.3 in)	32 of 100 (Routine)
Elizabethton	United States	Record daily precipitation	36.1 mm (1.4 in)	32 of 100 (Routine)
Bayard	United States	Record high minimum temperature	18.3 C (64.9 F)	32 of 100 (Routine)

Counts by Type and Timescale

836 records

Records set or tied on 11 August 2009 by type: Highest daily maximum 203, Lowest daily maximum 43, Highest daily minimum 264, Lowest daily minimum 138, Heaviest daily rainfall 188.

Records on 11 August 2009 by type
Record type	Records
Highest daily maximum	203
Lowest daily maximum	43
Highest daily minimum	264
Lowest daily minimum	138
Heaviest daily rainfall	188
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 2009 by timescale: all-time 5, monthly 16, daily 815.

How Much Records Were Beaten By

553 broken records

Margins by which the 553 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.3. Ties are not counted.

Top 20 by Significance

11 August 2009

Top 20 records on 11 August 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 2009	Manoa 712.1, US	daily rain	68.8 mm (2.7 in)	33.0 mm (1.3 in)	95 years	76 of 100 (Major)
11 August 2009	Morrilton, US	daily rain	96.8 mm (3.8 in)	80.3 mm (3.2 in)	60 years	67 of 100 (Major)
11 August 2009	Kiruna, SE	daily rain	45.0 mm (1.8 in)	20.0 mm (0.8 in)	67 years	61 of 100 (Major)
11 August 2009	Magdalena, MX	daily high min	22.8 C (73.0 F)	5.0 C (9.0 F)	52 years	60 of 100 (Major)
11 August 2009	Ponca City, US	daily rain	42.9 mm (1.7 in)	30.2 mm (1.2 in)	113 years	58 of 100 (Notable)
11 August 2009	Cranbrook (Cranbrook House), AU	daily rain	70.4 mm (2.8 in)	40.4 mm (1.6 in)	24 years	57 of 100 (Notable)
11 August 2009	Hamakuapoko 485, US	daily rain	36.1 mm (1.4 in)	26.2 mm (1.0 in)	43 years	57 of 100 (Notable)
11 August 2009	Tupelo Rgnl AP, US	daily rain	85.6 mm (3.4 in)	62.7 mm (2.5 in)	44 years	56 of 100 (Notable)
11 August 2009	Bardufoss, NO	daily rain	31.7 mm (1.2 in)	17.6 mm (0.7 in)	18 years	51 of 100 (Notable)
11 August 2009	Prescott 2 NNW, US	daily rain	111.8 mm (4.4 in)	67.9 mm (2.7 in)	0 years	50 of 100 (Notable)
11 August 2009	Gonzalez, MX	daily low min	16.7 C (62.1 F)	3.9 C (7.0 F)	48 years	49 of 100 (Notable)
11 August 2009	Tuba City, US	daily low min	8.9 C (48.0 F)	2.8 C (5.0 F)	98 years	49 of 100 (Notable)
11 August 2009	Animas 3ESE, US	monthly high min	28.3 C (82.9 F)	1.6 C (2.9 F)	80 years	49 of 100 (Notable)
11 August 2009	Diredawa, ET	all-time high max	43.5 C (110.3 F)	1.5 C (2.7 F)	50 years	48 of 100 (Notable)
11 August 2009	Nemours (Ghazaouet), DZ	daily high min	25.8 C (78.4 F)	1.8 C (3.2 F)	121 years	47 of 100 (Notable)
11 August 2009	Paiko Drive 723.4, US	daily rain	29.7 mm (1.2 in)	21.1 mm (0.8 in)	16 years	47 of 100 (Notable)
11 August 2009	Saint Leo, US	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	108 years	45 of 100 (Notable)
11 August 2009	Appleton City, US	daily rain	66.0 mm (2.6 in)	17.0 mm (0.7 in)	88 years	45 of 100 (Notable)
11 August 2009	Mackenzie, US	daily rain	36.1 mm (1.4 in)	15.8 mm (0.6 in)	59 years	45 of 100 (Notable)
11 August 2009	Blaine, US	daily low max	16.7 C (62.1 F)	1.6 C (2.9 F)	98 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

1793 to 2009

Records set or tied on this calendar date in each year from 1793 to 2009. 2009 had 836 records.

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

Records on 08-11 in each year
Year	Records
1793	1
1796	1
1811	1
1815	2
1838	1
1839	1
1841	1
1851	1
1855	1
1858	1
1861	2
1862	1
1863	1
1864	6
1865	1
1866	6
1869	4
1871	1
1875	1
1879	2
1881	1
1883	1
1885	1
1888	1
1889	4
1890	4
1891	1
1892	4
1893	1
1894	1
1895	2
1896	5
1897	3
1898	2
1899	3
1900	4
1901	4
1902	13
1903	12
1904	19
1905	9
1906	6
1907	8
1908	10
1909	41
1910	9
1911	24
1912	46
1913	43
1914	26
1915	27
1916	64
1917	217
1918	29
1919	18
1920	54
1921	201
1922	98
1923	80
1924	149
1925	219
1926	140
1927	190
1928	174
1929	354
1930	471
1931	453
1932	281
1933	416
1934	620
1935	499
1936	541
1937	356
1938	315
1939	389
1940	359
1941	807
1942	390
1943	345
1944	936
1945	401
1946	419
1947	709
1948	306
1949	471
1950	320
1951	296
1952	417
1953	283
1954	536
1955	319
1956	457
1957	305
1958	494
1959	337
1960	461
1961	429
1962	662
1963	493
1964	677
1965	793
1966	1,037
1967	1,071
1968	619
1969	533
1970	526
1971	711
1972	823
1973	451
1974	596
1975	753
1976	529
1977	845
1978	433
1979	797
1980	929
1981	645
1982	1,232
1983	1,095
1984	822
1985	804
1986	563
1987	885
1988	1,119
1989	983
1990	760
1991	822
1992	928
1993	840
1994	1,173
1995	1,324
1996	1,147
1997	1,512
1998	1,232
1999	1,152
2000	924
2001	811
2002	1,152
2003	1,601
2004	1,478
2005	1,031
2006	896
2007	1,428
2008	945
2009	836
2010	2,289
2011	1,106
2012	953
2013	470
2014	556
2015	696
2016	1,340
2017	619
2018	861
2019	758
2020	688
2021	834
2022	661
2023	757
2024	643
2025	722
2026	765

Download the Data

Data for records on 2009-08-11: 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 20	531
20 to 40	16
40 to 60	2
60 to 80	3
80 to 100	1