Weather Records on 22 August 2009

1,347 weather records were set or tied worldwide on 22 August 2009. Highest significance: Valentia Observatory, IE.

Key Facts for 22 August 2009

On 22 August 2009, 1,347 weather records were set or tied at long-record stations worldwide.
782 were record highs and 341 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 36 monthly and 1,310 daily.
Valentia Observatory set a daily record precipitation of 44.5 mm (1.8 in) on 22 August 2009.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 432 records.

Record Map

1,347 stations

1,347 station records on 22 August 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 22 August 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Valentia Observatory	Ireland	Record daily precipitation	44.5 mm (1.8 in)	61 of 100 (Major)
Conowingo Dam	United States	Record daily precipitation	74.2 mm (2.9 in)	60 of 100 (Major)
Westchester Co AP	United States	Record daily precipitation	69.8 mm (2.7 in)	58 of 100 (Notable)
Millville Muni AP	United States	Record daily precipitation	98.8 mm (3.9 in)	56 of 100 (Notable)
Melvin	United States	Record daily precipitation	65.5 mm (2.6 in)	53 of 100 (Notable)
Wilmington Porter Rsch	United States	Record daily precipitation	83.3 mm (3.3 in)	52 of 100 (Notable)
Waynesboro 2 W	United States	Record daily precipitation	41.9 mm (1.6 in)	51 of 100 (Notable)
Downieville	United States	Record high minimum temperature	16.1 C (61.0 F)	49 of 100 (Notable)
Milanville	United States	Record daily precipitation	65.8 mm (2.6 in)	48 of 100 (Notable)
Woodstock	United States	Record daily precipitation	48.5 mm (1.9 in)	48 of 100 (Notable)
Wilmington New Castle Co AP	United States	Record daily precipitation	56.9 mm (2.2 in)	47 of 100 (Notable)
Rock Is L&D 15	United States	Record low maximum temperature	20.0 C (68.0 F)	45 of 100 (Notable)
Greeley	United States	Record low minimum temperature	6.1 C (43.0 F)	45 of 100 (Notable)
Mays Landing 1 W	United States	Record daily precipitation	106.7 mm (4.2 in)	45 of 100 (Notable)
Phila Intl AP	United States	Record daily precipitation	69.3 mm (2.7 in)	45 of 100 (Notable)
Fjallsjonas	Sweden	Record daily precipitation	38.0 mm (1.5 in)	44 of 100 (Notable)
Estell Manor	United States	Record daily precipitation	150.6 mm (5.9 in)	44 of 100 (Notable)
Heber	United States	Record high maximum temperature	36.1 C (97.0 F)	44 of 100 (Notable)
Vienna	United States	Record daily precipitation	41.4 mm (1.6 in)	44 of 100 (Notable)
Quantico MCAS	United States	Record daily precipitation	65.5 mm (2.6 in)	44 of 100 (Notable)
Ubon Ratchathani	Thailand	Record daily precipitation	129.5 mm (5.1 in)	43 of 100 (Notable)
Ft Bidwell	United States	Record high minimum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Ellsworth	United States	Record low minimum temperature	9.4 C (48.9 F)	43 of 100 (Notable)
Mason City	United States	Record low minimum temperature	6.1 C (43.0 F)	43 of 100 (Notable)
Presa la Calera	Mexico	Record low minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Lugansk	Ukraine	Record low maximum temperature	16.3 C (61.3 F)	42 of 100 (Notable)
Paradise	United States	Record high maximum temperature	36.1 C (97.0 F)	42 of 100 (Notable)
Mt Wx	United States	Record daily precipitation	38.6 mm (1.5 in)	42 of 100 (Notable)
El-Ton	Russia	Record low maximum temperature	16.9 C (62.4 F)	41 of 100 (Notable)
Keams Canyon	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Springerville	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Goshen 3SW	United States	Record low maximum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Adrian 2 NNE	United States	Record low maximum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Superior	United States	Record low minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Mina	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Berlin	United States	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Liberty 1 NE	United States	Record daily precipitation	52.3 mm (2.1 in)	41 of 100 (Notable)
Waverly	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Callao	United States	Record high maximum temperature	36.1 C (97.0 F)	41 of 100 (Notable)
Zion Np	United States	Record high maximum temperature	41.1 C (106.0 F)	41 of 100 (Notable)
Vajda-Guba	Russia	Record high minimum temperature	13.0 C (55.4 F)	40 of 100 (Notable)
Multra	Sweden	Record daily precipitation	27.8 mm (1.1 in)	40 of 100 (Notable)
Aspea	Sweden	Record daily precipitation	34.6 mm (1.4 in)	40 of 100 (Notable)
Ft Kent	United States	Record daily precipitation	34.8 mm (1.4 in)	40 of 100 (Notable)
Ennis	United States	Record high maximum temperature	35.6 C (96.1 F)	40 of 100 (Notable)
Dyer 5S	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Ashland	United States	Record daily precipitation	52.3 mm (2.1 in)	40 of 100 (Notable)
Louisa	United States	Record daily precipitation	45.2 mm (1.8 in)	40 of 100 (Notable)
Tibooburra Post Office	Australia	Record high minimum temperature	16.8 C (62.2 F)	39 of 100 (Notable)
Aspendell	United States	Record high minimum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Coldwater St School	United States	Record low maximum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Greenville 2 NNE	United States	Record low maximum temperature	18.3 C (64.9 F)	39 of 100 (Notable)
Hillsboro	United States	Record low maximum temperature	21.1 C (70.0 F)	39 of 100 (Notable)
Batacosa	Mexico	Record low minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Atzalan	Mexico	Record low minimum temperature	6.7 C (44.1 F)	38 of 100 (Notable)
Danville	United States	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Abbeville	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Norton W	United States	Record high minimum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Moroleon	Mexico	Record daily precipitation	89.9 mm (3.5 in)	37 of 100 (Notable)
Jasper	United States	Record daily precipitation	53.3 mm (2.1 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,347 records

Records set or tied on 22 August 2009 by type: Highest daily maximum 398, Lowest daily maximum 178, Highest daily minimum 384, Lowest daily minimum 163, Heaviest daily rainfall 224.

Records on 22 August 2009 by type
Record type	Records
Highest daily maximum	398
Lowest daily maximum	178
Highest daily minimum	384
Lowest daily minimum	163
Heaviest daily rainfall	224
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 22 August 2009 by timescale: all-time 1, monthly 36, daily 1,310.

How Much Records Were Beaten By

935 broken records

Margins by which the 935 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 126.7. Ties are not counted.

Top 20 by Significance

22 August 2009

Top 20 records on 22 August 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 August 2009	Valentia Observatory, IE	daily rain	44.5 mm (1.8 in)	25.0 mm (1.0 in)	60 years	61 of 100 (Major)
22 August 2009	Conowingo Dam, US	daily rain	74.2 mm (2.9 in)	46.8 mm (1.8 in)	72 years	60 of 100 (Major)
22 August 2009	Westchester Co AP, US	daily rain	69.8 mm (2.7 in)	59.4 mm (2.3 in)	48 years	58 of 100 (Notable)
22 August 2009	Millville Muni AP, US	daily rain	98.8 mm (3.9 in)	68.3 mm (2.7 in)	54 years	56 of 100 (Notable)
22 August 2009	Melvin, US	daily rain	65.5 mm (2.6 in)	52.0 mm (2.0 in)	44 years	53 of 100 (Notable)
22 August 2009	Wilmington Porter Rsch, US	daily rain	83.3 mm (3.3 in)	41.1 mm (1.6 in)	76 years	52 of 100 (Notable)
22 August 2009	Waynesboro 2 W, US	daily rain	41.9 mm (1.6 in)	16.5 mm (0.6 in)	114 years	51 of 100 (Notable)
22 August 2009	Downieville, US	daily high min	16.1 C (61.0 F)	3.3 C (5.9 F)	96 years	49 of 100 (Notable)
22 August 2009	Milanville, US	daily rain	65.8 mm (2.6 in)	39.4 mm (1.6 in)	54 years	48 of 100 (Notable)
22 August 2009	Woodstock, US	daily rain	48.5 mm (1.9 in)	26.9 mm (1.1 in)	44 years	48 of 100 (Notable)
22 August 2009	Wilmington New Castle Co AP, US	daily rain	56.9 mm (2.2 in)	33.5 mm (1.3 in)	54 years	47 of 100 (Notable)
22 August 2009	Rock Is L&D 15, US	daily low max	20.0 C (68.0 F)	2.2 C (4.0 F)	134 years	45 of 100 (Notable)
22 August 2009	Greeley, US	daily low min	6.1 C (43.0 F)	2.8 C (5.0 F)	96 years	45 of 100 (Notable)
22 August 2009	Mays Landing 1 W, US	daily rain	106.7 mm (4.2 in)	53.4 mm (2.1 in)	50 years	45 of 100 (Notable)
22 August 2009	Phila Intl AP, US	daily rain	69.3 mm (2.7 in)	43.9 mm (1.7 in)	32 years	45 of 100 (Notable)
22 August 2009	Fjallsjonas, SE	daily rain	38.0 mm (1.5 in)	27.7 mm (1.1 in)	4 years	44 of 100 (Notable)
22 August 2009	Estell Manor, US	daily rain	150.6 mm (5.9 in)	126.7 mm (5.0 in)	2 years	44 of 100 (Notable)
22 August 2009	Heber, US	daily high max	36.1 C (97.0 F)	2.2 C (4.0 F)	90 years	44 of 100 (Notable)
22 August 2009	Vienna, US	daily rain	41.4 mm (1.6 in)	20.8 mm (0.8 in)	80 years	44 of 100 (Notable)
22 August 2009	Quantico MCAS, US	daily rain	65.5 mm (2.6 in)	34.8 mm (1.4 in)	63 years	44 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

1802 to 2009

Records set or tied on this calendar date in each year from 1802 to 2009. 2009 had 1,347 records.

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

Records on 08-22 in each year
Year	Records
1802	2
1803	1
1805	1
1812	1
1816	1
1835	1
1839	2
1843	1
1846	2
1849	1
1850	1
1853	1
1857	1
1863	1
1864	1
1867	1
1868	1
1869	1
1870	4
1872	1
1875	1
1876	3
1877	3
1878	2
1882	1
1883	1
1884	1
1885	1
1886	1
1887	2
1888	2
1889	3
1891	2
1892	6
1893	3
1894	7
1895	6
1896	2
1897	4
1898	6
1899	5
1900	1
1901	5
1902	6
1903	3
1904	8
1905	7
1906	24
1907	7
1908	29
1909	5
1910	19
1911	20
1912	39
1913	30
1914	18
1915	31
1916	75
1917	47
1918	85
1919	18
1920	60
1921	64
1922	44
1923	279
1924	148
1925	219
1926	144
1927	154
1928	134
1929	240
1930	276
1931	388
1932	222
1933	367
1934	234
1935	337
1936	954
1937	421
1938	501
1939	517
1940	503
1941	249
1942	500
1943	517
1944	526
1945	475
1946	410
1947	1,034
1948	297
1949	570
1950	460
1951	452
1952	372
1953	348
1954	466
1955	553
1956	785
1957	371
1958	511
1959	547
1960	612
1961	562
1962	329
1963	419
1964	686
1965	423
1966	830
1967	404
1968	1,091
1969	727
1970	368
1971	1,021
1972	436
1973	611
1974	628
1975	597
1976	722
1977	655
1978	529
1979	547
1980	640
1981	795
1982	912
1983	1,366
1984	739
1985	793
1986	1,073
1987	801
1988	1,133
1989	753
1990	808
1991	808
1992	994
1993	845
1994	803
1995	1,002
1996	942
1997	1,381
1998	1,016
1999	756
2000	867
2001	940
2002	1,385
2003	1,550
2004	1,029
2005	887
2006	832
2007	1,801
2008	869
2009	1,347
2010	1,397
2011	1,255
2012	831
2013	450
2014	911
2015	529
2016	730
2017	537
2018	752
2019	558
2020	1,041
2021	683
2022	781
2023	1,525
2024	803
2025	1,359
2026	992

Download the Data

Data for records on 2009-08-22: 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	888
20 to 40	35
40 to 60	9
60 to 80	2
80 to 100	0
100 to 120	0
120 to 140	1