Weather Records on 4 August 2009

681 weather records were set or tied worldwide on 4 August 2009. Highest significance: Syracuse, US.

Key Facts for 4 August 2009

On 4 August 2009, 681 weather records were set or tied at long-record stations worldwide.
478 were record highs and 128 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 44 monthly and 631 daily.
Syracuse set a daily record precipitation of 70.4 mm (2.8 in) on 4 August 2009.
Across 165 earlier years (1815 to 2026) the same calendar date averaged 440 records.

Record Map

681 stations

681 station records on 4 August 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 August 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Syracuse	United States	Record daily precipitation	70.4 mm (2.8 in)	64 of 100 (Major)
Enterprise 20 NNE	United States	Record daily precipitation	48.3 mm (1.9 in)	53 of 100 (Notable)
Indianapolis	United States	Record daily precipitation	96.8 mm (3.8 in)	51 of 100 (Notable)
Louisville Intl AP	United States	Record daily precipitation	115.1 mm (4.5 in)	51 of 100 (Notable)
Cape Girardeau Muni AP	United States	Record daily precipitation	88.9 mm (3.5 in)	50 of 100 (Notable)
Crete 4ESE	United States	Record daily precipitation	30.0 mm (1.2 in)	49 of 100 (Notable)
Madison Sewage Plt	United States	Record daily precipitation	78.0 mm (3.1 in)	48 of 100 (Notable)
Ft Grant	United States	Record high minimum temperature	25.0 C (77.0 F)	46 of 100 (Notable)
N Vernon 2 ESE	United States	Record daily precipitation	115.6 mm (4.6 in)	46 of 100 (Notable)
Gonzalez	Mexico	Record low minimum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
San Lucas Arroyo Paloma	Mexico	Record high maximum temperature	42.8 C (109.0 F)	43 of 100 (Notable)
Cooperstown	United States	Record low minimum temperature	4.4 C (39.9 F)	43 of 100 (Notable)
Middletown	United States	Record daily precipitation	50.5 mm (2.0 in)	43 of 100 (Notable)
Casa Grande Nm	United States	Record high minimum temperature	28.9 C (84.0 F)	42 of 100 (Notable)
Newkirk 5NE	United States	Record low minimum temperature	11.7 C (53.1 F)	41 of 100 (Notable)
Lewisburg Exp STN	United States	Record low minimum temperature	10.0 C (50.0 F)	41 of 100 (Notable)
Zunyi	China	Record daily precipitation	84.2 mm (3.3 in)	40 of 100 (Notable)
Tamarindo	Mexico	Record low minimum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Arad	Romania	Record high minimum temperature	23.1 C (73.6 F)	40 of 100 (Notable)
Nikolskoye/Beringa Ostrov	Russia	Record high maximum temperature	20.4 C (68.7 F)	40 of 100 (Notable)
Atakpane	Togo	Record daily precipitation	71.1 mm (2.8 in)	40 of 100 (Notable)
Lemmon	United States	Record low minimum temperature	6.7 C (44.1 F)	40 of 100 (Notable)
Ust-Maja	Russia	Record daily precipitation	51.5 mm (2.0 in)	39 of 100 (Notable)
Nikolsk	Russia	Record daily precipitation	56.7 mm (2.2 in)	39 of 100 (Notable)
Paradise	United States	Record high maximum temperature	35.0 C (95.0 F)	39 of 100 (Notable)
Melbourne WFO	United States	Record daily precipitation	57.7 mm (2.3 in)	39 of 100 (Notable)
Coeur D'Alene	United States	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
Richardton Abbey	United States	Record low minimum temperature	7.2 C (45.0 F)	39 of 100 (Notable)
Aspendell	United States	Record high minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Franklin	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Bishop	United States	Record high minimum temperature	26.1 C (79.0 F)	37 of 100 (Notable)
Kystovka	Russia	Record daily precipitation	36.1 mm (1.4 in)	36 of 100 (Notable)
Cuquio	Mexico	Record high maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Georgetown Wtr Wks	United States	Record daily precipitation	50.5 mm (2.0 in)	34 of 100 (Routine)
Glendive	United States	Record low minimum temperature	4.4 C (39.9 F)	34 of 100 (Routine)
Malin Head	Ireland	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Brohovo	Russia	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Burlington Junction	United States	Record daily precipitation	48.3 mm (1.9 in)	33 of 100 (Routine)
Otis	United States	Record high minimum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Gregory	United States	Record daily precipitation	42.2 mm (1.7 in)	33 of 100 (Routine)
Gwalior	India	Record high minimum temperature	29.8 C (85.6 F)	32 of 100 (Routine)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	36.7 C (98.1 F)	32 of 100 (Routine)
Zapote	Mexico	Record low minimum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Las Vigas	Mexico	Record high minimum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Danville	United States	Record low maximum temperature	22.2 C (72.0 F)	32 of 100 (Routine)
Maryville 2E	United States	Record daily precipitation	36.3 mm (1.4 in)	32 of 100 (Routine)
Ft Peck Pwr Plt	United States	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Sanya	China	Record low maximum temperature	26.5 C (79.7 F)	31 of 100 (Routine)
Acala	Mexico	Record high maximum temperature	41.1 C (106.0 F)	31 of 100 (Routine)
Arivechi	Mexico	Record high minimum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
Dry Tortugas	United States	Record high maximum temperature	37.2 C (99.0 F)	31 of 100 (Routine)
Franklin	United States	Record low maximum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Moundou	Chad	Record high minimum temperature	23.5 C (74.3 F)	30 of 100 (Routine)
San Isidro	Mexico	Record high maximum temperature	37.8 C (100.0 F)	30 of 100 (Routine)
Acatlan de Osorio (Smn)	Mexico	Record high minimum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Mc Clusky	United States	Record low maximum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Chongqing	China	Record daily precipitation	164.8 mm (6.5 in)	29 of 100 (Routine)
Sikasso	Mali	Record high maximum temperature	34.5 C (94.1 F)	29 of 100 (Routine)
El Salto	Mexico	Record high maximum temperature	28.9 C (84.0 F)	29 of 100 (Routine)
Dimas	Mexico	Record high minimum temperature	28.9 C (84.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

681 records

Records set or tied on 4 August 2009 by type: Highest daily maximum 271, Lowest daily maximum 46, Highest daily minimum 207, Lowest daily minimum 82, Heaviest daily rainfall 75.

Records on 4 August 2009 by type
Record type	Records
Highest daily maximum	271
Lowest daily maximum	46
Highest daily minimum	207
Lowest daily minimum	82
Heaviest daily rainfall	75
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 August 2009 by timescale: all-time 6, monthly 44, daily 631.

How Much Records Were Beaten By

381 broken records

Margins by which the 381 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 64.5. Ties are not counted.

Top 20 by Significance

4 August 2009

Top 20 records on 4 August 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 August 2009	Syracuse, US	daily rain	70.4 mm (2.8 in)	34.8 mm (1.4 in)	109 years	64 of 100 (Major)
4 August 2009	Enterprise 20 NNE, US	daily rain	48.3 mm (1.9 in)	37.4 mm (1.5 in)	32 years	53 of 100 (Notable)
4 August 2009	Indianapolis, US	daily rain	96.8 mm (3.8 in)	64.5 mm (2.5 in)	19 years	51 of 100 (Notable)
4 August 2009	Louisville Intl AP, US	monthly rain	115.1 mm (4.5 in)	35.9 mm (1.4 in)	16 years	51 of 100 (Notable)
4 August 2009	Cape Girardeau Muni AP, US	daily rain	88.9 mm (3.5 in)	62.2 mm (2.4 in)	19 years	50 of 100 (Notable)
4 August 2009	Crete 4ESE, US	daily rain	30.0 mm (1.2 in)	12.5 mm (0.5 in)	113 years	49 of 100 (Notable)
4 August 2009	Madison Sewage Plt, US	daily rain	78.0 mm (3.1 in)	21.6 mm (0.9 in)	78 years	48 of 100 (Notable)
4 August 2009	Ft Grant, US	daily high min	25.0 C (77.0 F)	1.7 C (3.1 F)	104 years	46 of 100 (Notable)
4 August 2009	N Vernon 2 ESE, US	daily rain	115.6 mm (4.6 in)	44.5 mm (1.8 in)	36 years	46 of 100 (Notable)
4 August 2009	Gonzalez, MX	daily low min	16.7 C (62.1 F)	3.9 C (7.0 F)	32 years	44 of 100 (Notable)
4 August 2009	San Lucas Arroyo Paloma, MX	all-time high max	42.8 C (109.0 F)	0.6 C (1.1 F)	54 years	43 of 100 (Notable)
4 August 2009	Cooperstown, US	daily low min	4.4 C (39.9 F)	1.2 C (2.2 F)	103 years	43 of 100 (Notable)
4 August 2009	Middletown, US	daily rain	50.5 mm (2.0 in)	18.0 mm (0.7 in)	66 years	43 of 100 (Notable)
4 August 2009	Casa Grande Nm, US	daily high min	28.9 C (84.0 F)	1.1 C (2.0 F)	95 years	42 of 100 (Notable)
4 August 2009	Newkirk 5NE, US	daily low min	11.7 C (53.1 F)	1.6 C (2.9 F)	88 years	41 of 100 (Notable)
4 August 2009	Lewisburg Exp STN, US	daily low min	10.0 C (50.0 F)	0.6 C (1.1 F)	102 years	41 of 100 (Notable)
4 August 2009	Zunyi, CN	daily rain	84.2 mm (3.3 in)	40.6 mm (1.6 in)	24 years	40 of 100 (Notable)
4 August 2009	Tamarindo, MX	daily low min	17.8 C (64.0 F)	2.2 C (4.0 F)	52 years	40 of 100 (Notable)
4 August 2009	Arad, RO	daily high min	23.1 C (73.6 F)	0.1 C (0.2 F)	104 years	40 of 100 (Notable)
4 August 2009	Nikolskoye/Beringa Ostrov, RU	daily high max	20.4 C (68.7 F)	2.3 C (4.1 F)	58 years	40 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

1815 to 2009

Records set or tied on this calendar date in each year from 1815 to 2009. 2009 had 681 records.

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

Records on 08-04 in each year
Year	Records
1815	1
1827	1
1830	2
1833	1
1835	1
1843	1
1846	1
1847	1
1848	1
1857	1
1859	2
1860	2
1863	1
1865	3
1867	1
1868	1
1870	1
1871	1
1872	2
1874	3
1875	1
1878	3
1879	1
1881	2
1882	1
1883	1
1885	3
1886	1
1887	3
1888	4
1889	2
1890	1
1891	2
1893	2
1894	1
1895	3
1896	4
1897	3
1898	1
1899	7
1900	6
1902	4
1903	18
1904	11
1905	19
1906	14
1907	20
1908	31
1909	27
1910	17
1911	23
1912	51
1913	15
1914	33
1915	85
1916	97
1917	29
1918	95
1919	34
1920	79
1921	67
1922	68
1923	146
1924	132
1925	77
1926	334
1927	136
1928	352
1929	224
1930	698
1931	371
1932	258
1933	347
1934	521
1935	367
1936	719
1937	258
1938	489
1939	433
1940	236
1941	383
1942	303
1943	468
1944	662
1945	355
1946	265
1947	845
1948	558
1949	421
1950	666
1951	680
1952	465
1953	1,017
1954	426
1955	624
1956	437
1957	343
1958	533
1959	303
1960	331
1961	745
1962	470
1963	438
1964	885
1965	409
1966	552
1967	428
1968	280
1969	638
1970	415
1971	813
1972	773
1973	748
1974	1,040
1975	772
1976	801
1977	599
1978	1,051
1979	510
1980	998
1981	636
1982	703
1983	920
1984	722
1985	634
1986	905
1987	892
1988	1,204
1989	738
1990	1,013
1991	769
1992	754
1993	1,046
1994	1,265
1995	1,117
1996	1,143
1997	891
1998	1,423
1999	762
2000	840
2001	1,087
2002	928
2003	1,309
2004	968
2005	1,246
2006	1,131
2007	685
2008	883
2009	681
2010	1,665
2011	1,536
2012	738
2013	452
2014	980
2015	505
2016	732
2017	1,134
2018	760
2019	499
2020	778
2021	691
2022	1,185
2023	1,150
2024	809
2025	840
2026	1,044

Download the Data

Data for records on 2009-08-04: 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 10	352
10 to 20	11
20 to 30	8
30 to 40	6
40 to 50	2
50 to 60	0
60 to 70	2