Weather Records on 20 September 2009

715 weather records were set or tied worldwide on 20 September 2009. Highest significance: Hendersonville 1 NE, US.

Key Facts for 20 September 2009

On 20 September 2009, 715 weather records were set or tied at long-record stations worldwide.
503 were record highs and 91 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 25 monthly and 690 daily.
Hendersonville 1 NE set a daily record precipitation of 127.0 mm (5.0 in) on 20 September 2009.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 440 records.

Record Map

715 stations

715 station records on 20 September 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hendersonville 1 NE	United States	Record daily precipitation	127.0 mm (5.0 in)	75 of 100 (Major)
Highlands	United States	Record daily precipitation	212.9 mm (8.4 in)	70 of 100 (Major)
Asheville	United States	Record daily precipitation	62.7 mm (2.5 in)	63 of 100 (Major)
Hilok	Russia	Record daily precipitation	38.7 mm (1.5 in)	62 of 100 (Major)
Gudermes	Russia	Record daily precipitation	56.1 mm (2.2 in)	59 of 100 (Notable)
Carrollton	United States	Record daily precipitation	51.3 mm (2.0 in)	59 of 100 (Notable)
Asheville AP	United States	Record daily precipitation	83.1 mm (3.3 in)	59 of 100 (Notable)
Toccoa	United States	Record daily precipitation	115.1 mm (4.5 in)	57 of 100 (Notable)
Cobb	United States	Record daily precipitation	102.9 mm (4.1 in)	56 of 100 (Notable)
Romanovka	Russia	Record daily precipitation	29.9 mm (1.2 in)	55 of 100 (Notable)
Hopkinsville	United States	Record daily precipitation	50.5 mm (2.0 in)	53 of 100 (Notable)
Changde	China	Record daily precipitation	98.7 mm (3.9 in)	48 of 100 (Notable)
Monett 4SW	United States	Record daily precipitation	106.4 mm (4.2 in)	48 of 100 (Notable)
Ohotsk	Russia	Record daily precipitation	54.5 mm (2.1 in)	47 of 100 (Notable)
Tepelmeme de Morelos	Mexico	Record high maximum temperature	35.0 C (95.0 F)	46 of 100 (Notable)
Wewahitchka	United States	Record low maximum temperature	23.9 C (75.0 F)	46 of 100 (Notable)
El Salitre	Mexico	Record daily precipitation	80.3 mm (3.2 in)	45 of 100 (Notable)
Las Animas	Mexico	Record low maximum temperature	18.9 C (66.0 F)	45 of 100 (Notable)
Kalakan	Russia	Record daily precipitation	29.6 mm (1.2 in)	44 of 100 (Notable)
Milstead	United States	Record daily precipitation	44.7 mm (1.8 in)	44 of 100 (Notable)
Daytona Beach	United States	Record high minimum temperature	27.8 C (82.0 F)	43 of 100 (Notable)
Hollister	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Salem	United States	Record daily precipitation	57.7 mm (2.3 in)	41 of 100 (Notable)
Culbertson	United States	Record high maximum temperature	32.8 C (91.0 F)	41 of 100 (Notable)
Martinsdale 3 NNW	United States	Record high maximum temperature	28.9 C (84.0 F)	41 of 100 (Notable)
Urjupino	Russia	Record daily precipitation	25.9 mm (1.0 in)	40 of 100 (Notable)
Savage	United States	Record high minimum temperature	12.2 C (54.0 F)	40 of 100 (Notable)
Waynesville 1 E	United States	Record daily precipitation	36.8 mm (1.4 in)	40 of 100 (Notable)
Jackson	United States	Record high minimum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Bugt	China	Record daily precipitation	33.8 mm (1.3 in)	39 of 100 (Notable)
Kermanshah	Iran	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Sidney	United States	Record high maximum temperature	34.4 C (93.9 F)	38 of 100 (Notable)
U of Ga Plt Sci	United States	Record daily precipitation	64.0 mm (2.5 in)	37 of 100 (Notable)
Jerome	United States	Record high minimum temperature	13.3 C (55.9 F)	37 of 100 (Notable)
Bozeman Montana State UNIV	United States	Record high minimum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Bridger 2 N	United States	Record high maximum temperature	33.3 C (91.9 F)	37 of 100 (Notable)
Moccasin Exp STN	United States	Record high maximum temperature	33.3 C (91.9 F)	37 of 100 (Notable)
Dillon U of Montana Western	United States	Record high minimum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Glendive	United States	Record high maximum temperature	34.4 C (93.9 F)	36 of 100 (Notable)
Melstone	United States	Record high maximum temperature	36.1 C (97.0 F)	36 of 100 (Notable)
Oodnadatta Airport	Australia	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Moulton 2	United States	Record daily precipitation	67.6 mm (2.7 in)	35 of 100 (Notable)
Wauchula	United States	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Long Creek	United States	Record daily precipitation	77.5 mm (3.1 in)	35 of 100 (Notable)
Tullahoma	United States	Record daily precipitation	54.4 mm (2.1 in)	35 of 100 (Notable)
Louisville Intl AP	United States	Record daily precipitation	100.3 mm (3.9 in)	35 of 100 (Notable)
El Tule	Mexico	Record high minimum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Driggs	United States	Record high minimum temperature	10.6 C (51.1 F)	33 of 100 (Routine)
Ft Benton	United States	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Medicine Lake 3 SE	United States	Record high maximum temperature	34.4 C (93.9 F)	33 of 100 (Routine)
Trident	United States	Record high minimum temperature	13.3 C (55.9 F)	33 of 100 (Routine)
Wrangell AP	United States	Record daily precipitation	53.3 mm (2.1 in)	33 of 100 (Routine)
Chattanooga AP	United States	Record daily precipitation	85.6 mm (3.4 in)	33 of 100 (Routine)
Atlatlahuacan	Mexico	Record high minimum temperature	15.6 C (60.1 F)	32 of 100 (Routine)
Pesqueira	Mexico	Record low maximum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Clifton	United States	Record low minimum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Crescent City	United States	Record high minimum temperature	25.6 C (78.1 F)	32 of 100 (Routine)
Gainesville	United States	Record daily precipitation	59.2 mm (2.3 in)	32 of 100 (Routine)
Fletcher 3 W	United States	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Kerki	Turkmenistan	Record high minimum temperature	20.5 C (68.9 F)	31 of 100 (Routine)

Counts by Type and Timescale

715 records

Records set or tied on 20 September 2009 by type: Highest daily maximum 231, Lowest daily maximum 39, Highest daily minimum 272, Lowest daily minimum 52, Heaviest daily rainfall 120, Heaviest daily snowfall 1.

Records on 20 September 2009 by type
Record type	Records
Highest daily maximum	231
Lowest daily maximum	39
Highest daily minimum	272
Lowest daily minimum	52
Heaviest daily rainfall	120
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 20 September 2009 by timescale: all-time 0, monthly 25, daily 690.

How Much Records Were Beaten By

515 broken records

Margins by which the 515 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 87.2. Ties are not counted.

Top 20 by Significance

20 September 2009

Top 20 records on 20 September 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2009	Hendersonville 1 NE, US	daily rain	127.0 mm (5.0 in)	67.8 mm (2.7 in)	84 years	75 of 100 (Major)
20 September 2009	Highlands, US	daily rain	212.9 mm (8.4 in)	87.2 mm (3.4 in)	84 years	70 of 100 (Major)
20 September 2009	Asheville, US	daily rain	62.7 mm (2.5 in)	32.5 mm (1.3 in)	96 years	63 of 100 (Major)
20 September 2009	Hilok, RU	daily rain	38.7 mm (1.5 in)	27.2 mm (1.1 in)	52 years	62 of 100 (Major)
20 September 2009	Gudermes, RU	daily rain	56.1 mm (2.2 in)	42.1 mm (1.7 in)	40 years	59 of 100 (Notable)
20 September 2009	Carrollton, US	daily rain	51.3 mm (2.0 in)	32.2 mm (1.3 in)	103 years	59 of 100 (Notable)
20 September 2009	Asheville AP, US	daily rain	83.1 mm (3.3 in)	59.0 mm (2.3 in)	44 years	59 of 100 (Notable)
20 September 2009	Toccoa, US	daily rain	115.1 mm (4.5 in)	51.6 mm (2.0 in)	66 years	57 of 100 (Notable)
20 September 2009	Cobb, US	daily rain	102.9 mm (4.1 in)	83.1 mm (3.3 in)	38 years	56 of 100 (Notable)
20 September 2009	Romanovka, RU	daily rain	29.9 mm (1.2 in)	20.8 mm (0.8 in)	52 years	55 of 100 (Notable)
20 September 2009	Hopkinsville, US	daily rain	50.5 mm (2.0 in)	21.3 mm (0.8 in)	108 years	53 of 100 (Notable)
20 September 2009	Changde, CN	daily rain	98.7 mm (3.9 in)	54.5 mm (2.1 in)	15 years	48 of 100 (Notable)
20 September 2009	Monett 4SW, US	daily rain	106.4 mm (4.2 in)	78.5 mm (3.1 in)	16 years	48 of 100 (Notable)
20 September 2009	Ohotsk, RU	daily rain	54.5 mm (2.1 in)	29.5 mm (1.2 in)	26 years	47 of 100 (Notable)
20 September 2009	Tepelmeme de Morelos, MX	daily high max	35.0 C (95.0 F)	8.3 C (14.9 F)	42 years	46 of 100 (Notable)
20 September 2009	Wewahitchka, US	daily low max	23.9 C (75.0 F)	1.7 C (3.1 F)	108 years	46 of 100 (Notable)
20 September 2009	El Salitre, MX	daily rain	80.3 mm (3.2 in)	40.4 mm (1.6 in)	24 years	45 of 100 (Notable)
20 September 2009	Las Animas, MX	daily low max	18.9 C (66.0 F)	5.0 C (9.0 F)	56 years	45 of 100 (Notable)
20 September 2009	Kalakan, RU	daily rain	29.6 mm (1.2 in)	16.6 mm (0.7 in)	52 years	44 of 100 (Notable)
20 September 2009	Milstead, US	daily rain	44.7 mm (1.8 in)	13.7 mm (0.5 in)	91 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

1812 to 2009

Records set or tied on this calendar date in each year from 1812 to 2009. 2009 had 715 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 2009-09-20: 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	480
20 to 40	24
40 to 60	7
60 to 80	2
80 to 100	2