Weather Records on 27 August 2009

701 weather records were set or tied worldwide on 27 August 2009. Highest significance: Cedar Rapids #1, US.

Key Facts for 27 August 2009

On 27 August 2009, 701 weather records were set or tied at long-record stations worldwide.
416 were record highs and 141 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 24 monthly and 671 daily.
Cedar Rapids #1 set a daily record precipitation of 113.8 mm (4.5 in) on 27 August 2009.
Across 165 earlier years (1807 to 2026) the same calendar date averaged 436 records.

Record Map

701 stations

701 station records on 27 August 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 August 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cedar Rapids #1	United States	Record daily precipitation	113.8 mm (4.5 in)	80 of 100 (Exceptional)
Pendra Road	India	Record daily precipitation	462.0 mm (18.2 in)	79 of 100 (Major)
Washington	United States	Record daily precipitation	132.8 mm (5.2 in)	69 of 100 (Major)
Grinnell 3 SW	United States	Record daily precipitation	106.2 mm (4.2 in)	68 of 100 (Major)
Sigourney	United States	Record daily precipitation	97.8 mm (3.9 in)	64 of 100 (Major)
Knoxville AP	United States	Record daily precipitation	70.9 mm (2.8 in)	63 of 100 (Major)
Knoxville	United States	Record daily precipitation	86.9 mm (3.4 in)	58 of 100 (Notable)
Sells	United States	Record high minimum temperature	33.9 C (93.0 F)	57 of 100 (Notable)
Ellsworth 2W	United States	Record daily precipitation	43.7 mm (1.7 in)	57 of 100 (Notable)
Gresham 3W	United States	Record daily precipitation	75.7 mm (3.0 in)	57 of 100 (Notable)
Neosho Rapids	United States	Record daily precipitation	68.3 mm (2.7 in)	56 of 100 (Notable)
Zakatala	Azerbaijan	Record daily precipitation	54.4 mm (2.1 in)	52 of 100 (Notable)
Harlan	United States	Record daily precipitation	75.2 mm (3.0 in)	50 of 100 (Notable)
Toamasina	Madagascar	Record daily precipitation	89.9 mm (3.5 in)	49 of 100 (Notable)
Magdalena	Mexico	Record high minimum temperature	22.8 C (73.0 F)	49 of 100 (Notable)
Gonzalez	Mexico	Record low minimum temperature	16.7 C (62.1 F)	49 of 100 (Notable)
Indianola 1SW	United States	Record daily precipitation	49.8 mm (2.0 in)	49 of 100 (Notable)
Illinois City Dam 16	United States	Record daily precipitation	73.7 mm (2.9 in)	48 of 100 (Notable)
Memana (Babel Farm)	Australia	Record daily precipitation	37.8 mm (1.5 in)	47 of 100 (Notable)
Motozintla (Smn)	Mexico	Record high maximum temperature	35.6 C (96.1 F)	46 of 100 (Notable)
Gridley	United States	Record daily precipitation	73.7 mm (2.9 in)	46 of 100 (Notable)
Sejmchan	Russia	Record daily precipitation	33.5 mm (1.3 in)	45 of 100 (Notable)
Kirov	Russia	Record daily precipitation	41.5 mm (1.6 in)	45 of 100 (Notable)
Iowa City	United States	Record daily precipitation	53.3 mm (2.1 in)	45 of 100 (Notable)
Orange	United States	Record daily precipitation	85.1 mm (3.4 in)	45 of 100 (Notable)
Surprise	United States	Record daily precipitation	65.3 mm (2.6 in)	44 of 100 (Notable)
Apalachicola AP	United States	Record daily precipitation	86.4 mm (3.4 in)	43 of 100 (Notable)
Albany 3 SE	United States	Record high minimum temperature	24.4 C (75.9 F)	43 of 100 (Notable)
Oskaloosa	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
The Dalles	United States	Record low minimum temperature	5.0 C (41.0 F)	43 of 100 (Notable)
Osterley	Australia	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record high minimum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Debrecen Airport	Hungary	Record high minimum temperature	19.1 C (66.4 F)	41 of 100 (Notable)
Presa la Calera	Mexico	Record low minimum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Troy	United States	Record low minimum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Kitt Peak	United States	Record low minimum temperature	5.6 C (42.1 F)	41 of 100 (Notable)
San Agustin Metziquititlan	Mexico	Record high maximum temperature	35.0 C (95.0 F)	40 of 100 (Notable)
Lincoln UNIV Pwr Plt	United States	Record daily precipitation	26.2 mm (1.0 in)	40 of 100 (Notable)
Santa Rosa	Mexico	Record high maximum temperature	33.9 C (93.0 F)	39 of 100 (Notable)
Montezuma 1 W	United States	Record daily precipitation	69.3 mm (2.7 in)	39 of 100 (Notable)
Miena Dam	Australia	Record daily precipitation	29.4 mm (1.2 in)	38 of 100 (Notable)
Lady Barron (Franklin Parade)	Australia	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Moultrie 2 ESE	United States	Record daily precipitation	31.2 mm (1.2 in)	38 of 100 (Notable)
Williamsburg 1E	United States	Record daily precipitation	88.1 mm (3.5 in)	38 of 100 (Notable)
Highland Home	United States	Record low minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Indio Fire STN	United States	Record high maximum temperature	47.2 C (117.0 F)	37 of 100 (Notable)
Trident	United States	Record high minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Mead 6S	United States	Record daily precipitation	71.1 mm (2.8 in)	37 of 100 (Notable)
Mobile	United States	Record low maximum temperature	25.0 C (77.0 F)	37 of 100 (Notable)
Tallahassee	United States	Record low maximum temperature	25.0 C (77.0 F)	37 of 100 (Notable)
Princeton	United States	Record daily precipitation	93.0 mm (3.7 in)	36 of 100 (Notable)
Tihosuco	Mexico	Record low minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Olenja Rechka	Russia	Record daily precipitation	40.0 mm (1.6 in)	35 of 100 (Notable)
Macomb	United States	Record daily precipitation	67.3 mm (2.6 in)	35 of 100 (Notable)
San Ildelfonso Villa Alta	Mexico	Record low maximum temperature	17.8 C (64.0 F)	34 of 100 (Routine)
Beaconsfield 3N	United States	Record daily precipitation	116.8 mm (4.6 in)	34 of 100 (Routine)
Pattonsburg 2S	United States	Record daily precipitation	82.6 mm (3.3 in)	34 of 100 (Routine)
Mobile Dwtn AP	United States	Record low maximum temperature	25.0 C (77.0 F)	34 of 100 (Routine)
Malpaso	Mexico	Record high minimum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
San Luis de la Paz	Mexico	Record high minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

701 records

Records set or tied on 27 August 2009 by type: Highest daily maximum 269, Lowest daily maximum 57, Highest daily minimum 147, Lowest daily minimum 84, Heaviest daily rainfall 144.

Records on 27 August 2009 by type
Record type	Records
Highest daily maximum	269
Lowest daily maximum	57
Highest daily minimum	147
Lowest daily minimum	84
Heaviest daily rainfall	144
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 August 2009 by timescale: all-time 6, monthly 24, daily 671.

How Much Records Were Beaten By

495 broken records

Margins by which the 495 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 142.0. Ties are not counted.

Top 20 by Significance

27 August 2009

Top 20 records on 27 August 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 August 2009	Cedar Rapids #1, US	daily rain	113.8 mm (4.5 in)	69.3 mm (2.7 in)	106 years	80 of 100 (Exceptional)
27 August 2009	Pendra Road, IN	all-time rain	462.0 mm (18.2 in)	142.0 mm (5.6 in)	31 years	79 of 100 (Major)
27 August 2009	Washington, US	daily rain	132.8 mm (5.2 in)	50.8 mm (2.0 in)	106 years	69 of 100 (Major)
27 August 2009	Grinnell 3 SW, US	daily rain	106.2 mm (4.2 in)	55.4 mm (2.2 in)	86 years	68 of 100 (Major)
27 August 2009	Sigourney, US	daily rain	97.8 mm (3.9 in)	36.3 mm (1.4 in)	100 years	64 of 100 (Major)
27 August 2009	Knoxville AP, US	daily rain	70.9 mm (2.8 in)	31.0 mm (1.2 in)	88 years	63 of 100 (Major)
27 August 2009	Knoxville, US	daily rain	86.9 mm (3.4 in)	36.9 mm (1.5 in)	86 years	58 of 100 (Notable)
27 August 2009	Sells, US	all-time high min	33.9 C (93.0 F)	0.6 C (1.1 F)	89 years	57 of 100 (Notable)
27 August 2009	Ellsworth 2W, US	daily rain	43.7 mm (1.7 in)	32.3 mm (1.3 in)	63 years	57 of 100 (Notable)
27 August 2009	Gresham 3W, US	daily rain	75.7 mm (3.0 in)	57.7 mm (2.3 in)	46 years	57 of 100 (Notable)
27 August 2009	Neosho Rapids, US	daily rain	68.3 mm (2.7 in)	32.7 mm (1.3 in)	100 years	56 of 100 (Notable)
27 August 2009	Zakatala, AZ	daily rain	54.4 mm (2.1 in)	36.5 mm (1.4 in)	72 years	52 of 100 (Notable)
27 August 2009	Harlan, US	daily rain	75.2 mm (3.0 in)	39.4 mm (1.6 in)	52 years	50 of 100 (Notable)
27 August 2009	Toamasina, MG	daily rain	89.9 mm (3.5 in)	71.9 mm (2.8 in)	20 years	49 of 100 (Notable)
27 August 2009	Magdalena, MX	daily high min	22.8 C (73.0 F)	3.9 C (7.0 F)	40 years	49 of 100 (Notable)
27 August 2009	Gonzalez, MX	daily low min	16.7 C (62.1 F)	3.9 C (7.0 F)	47 years	49 of 100 (Notable)
27 August 2009	Indianola 1SW, US	daily rain	49.8 mm (2.0 in)	15.8 mm (0.6 in)	106 years	49 of 100 (Notable)
27 August 2009	Illinois City Dam 16, US	daily rain	73.7 mm (2.9 in)	45.8 mm (1.8 in)	31 years	48 of 100 (Notable)
27 August 2009	Memana (Babel Farm), AU	daily rain	37.8 mm (1.5 in)	23.6 mm (0.9 in)	10 years	47 of 100 (Notable)
27 August 2009	Motozintla (Smn), MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	84 years	46 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

1807 to 2009

Records set or tied on this calendar date in each year from 1807 to 2009. 2009 had 701 records.

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

Records on 08-27 in each year
Year	Records
1807	3
1810	1
1811	1
1813	1
1816	1
1827	1
1829	1
1834	1
1846	1
1847	1
1848	1
1854	1
1857	1
1858	1
1859	1
1863	1
1864	3
1865	2
1869	1
1870	1
1871	1
1874	1
1876	1
1877	4
1880	1
1881	2
1882	1
1884	3
1885	2
1886	2
1887	2
1889	1
1890	10
1891	4
1892	1
1894	7
1895	1
1896	4
1899	5
1900	5
1901	6
1902	2
1903	22
1904	4
1905	16
1906	27
1907	9
1908	10
1909	10
1910	6
1911	16
1912	40
1913	10
1914	31
1915	37
1916	106
1917	57
1918	18
1919	78
1920	36
1921	27
1922	52
1923	63
1924	245
1925	102
1926	143
1927	395
1928	197
1929	80
1930	247
1931	205
1932	355
1933	368
1934	249
1935	348
1936	806
1937	679
1938	374
1939	191
1940	468
1941	504
1942	476
1943	581
1944	811
1945	414
1946	345
1947	291
1948	987
1949	475
1950	380
1951	415
1952	402
1953	712
1954	594
1955	485
1956	387
1957	615
1958	213
1959	522
1960	365
1961	365
1962	577
1963	335
1964	400
1965	440
1966	406
1967	887
1968	517
1969	780
1970	1,361
1971	640
1972	722
1973	1,519
1974	722
1975	506
1976	565
1977	793
1978	671
1979	917
1980	478
1981	998
1982	828
1983	823
1984	683
1985	660
1986	1,072
1987	1,356
1988	601
1989	854
1990	761
1991	813
1992	1,657
1993	1,087
1994	696
1995	1,143
1996	968
1997	1,189
1998	1,387
1999	1,258
2000	865
2001	1,304
2002	1,027
2003	916
2004	1,037
2005	733
2006	1,090
2007	958
2008	885
2009	701
2010	1,045
2011	1,518
2012	626
2013	629
2014	582
2015	832
2016	968
2017	838
2018	933
2019	1,013
2020	777
2021	635
2022	470
2023	953
2024	600
2025	1,218
2026	815

Download the Data

Data for records on 2009-08-27: 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	451
20 to 40	32
40 to 60	8
60 to 80	3
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1