Weather Records on 18 September 2009

692 weather records were set or tied worldwide on 18 September 2009. Highest significance: Har Kenaan, IL.

Key Facts for 18 September 2009

On 18 September 2009, 692 weather records were set or tied at long-record stations worldwide.
409 were record highs and 122 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 681 daily.
Har Kenaan set a daily record precipitation of 32.7 mm (1.3 in) on 18 September 2009.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 420 records.

Record Map

692 stations

692 station records on 18 September 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Har Kenaan	Israel	Record daily precipitation	32.7 mm (1.3 in)	67 of 100 (Major)
Camden 1	United States	Record daily precipitation	94.0 mm (3.7 in)	63 of 100 (Major)
Bilbao Aeropuerto	Spain	Record daily precipitation	90.1 mm (3.5 in)	60 of 100 (Major)
Velikij_Ustjug	Russia	Record daily precipitation	27.5 mm (1.1 in)	58 of 100 (Notable)
Onega	Russia	Record daily precipitation	28.2 mm (1.1 in)	53 of 100 (Notable)
Hawkinsville	United States	Record daily precipitation	121.7 mm (4.8 in)	50 of 100 (Notable)
Vitoria/Foronda	Spain	Record daily precipitation	33.4 mm (1.3 in)	49 of 100 (Notable)
High Springs	United States	Record daily precipitation	139.7 mm (5.5 in)	48 of 100 (Notable)
Ajojucar	Mexico	Record daily precipitation	56.9 mm (2.2 in)	47 of 100 (Notable)
San Juanico	Mexico	Record daily precipitation	59.9 mm (2.4 in)	45 of 100 (Notable)
Bradfordsville	United States	Record daily precipitation	66.0 mm (2.6 in)	45 of 100 (Notable)
Waynesboro	United States	Record daily precipitation	90.7 mm (3.6 in)	45 of 100 (Notable)
Leeds	United States	Record daily precipitation	129.5 mm (5.1 in)	44 of 100 (Notable)
Moorhead	United States	Record daily precipitation	35.6 mm (1.4 in)	42 of 100 (Notable)
Trident	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Crosby	United States	Record high minimum temperature	13.9 C (57.0 F)	41 of 100 (Notable)
Lake Cormorant	United States	Record daily precipitation	73.2 mm (2.9 in)	40 of 100 (Notable)
Chinook	United States	Record high minimum temperature	12.8 C (55.0 F)	40 of 100 (Notable)
Mtn Park	United States	Record daily precipitation	26.2 mm (1.0 in)	40 of 100 (Notable)
Westhope	United States	Record high minimum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
Innsbruck	Austria	Record high minimum temperature	14.8 C (58.6 F)	38 of 100 (Notable)
Kostroma	Russia	Record daily precipitation	38.4 mm (1.5 in)	38 of 100 (Notable)
Greenville	United States	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Gilroy	United States	Record low minimum temperature	3.3 C (37.9 F)	37 of 100 (Notable)
Rome	United States	Record high minimum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Greenwood Leflore AP	United States	Record daily precipitation	85.6 mm (3.4 in)	37 of 100 (Notable)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	35.6 C (96.1 F)	36 of 100 (Notable)
Arroyo Frio	Mexico	Record low maximum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Capitan	United States	Record low maximum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Sewanee	United States	Record daily precipitation	44.5 mm (1.8 in)	36 of 100 (Notable)
El Mayab	Mexico	Record daily precipitation	78.5 mm (3.1 in)	35 of 100 (Notable)
Eastman 1 W	United States	Record daily precipitation	54.6 mm (2.1 in)	35 of 100 (Notable)
Montezuma 2 NW	United States	Record daily precipitation	46.2 mm (1.8 in)	35 of 100 (Notable)
W Liberty 3NW	United States	Record daily precipitation	28.7 mm (1.1 in)	35 of 100 (Notable)
Moccasin Exp STN	United States	Record high maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)
Dublin 2SE	United States	Record low maximum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Motozintla (Smn)	Mexico	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
San Miguel Chimalapa	Mexico	Record low minimum temperature	2.8 C (37.0 F)	34 of 100 (Routine)
Bria	Central African Republic	Record high minimum temperature	21.5 C (70.7 F)	33 of 100 (Routine)
Alexandria Intl	Egypt	Record high maximum temperature	37.4 C (99.3 F)	33 of 100 (Routine)
Valle de Santiago	Mexico	Record daily precipitation	47.0 mm (1.9 in)	33 of 100 (Routine)
San Ildelfonso Villa Alta	Mexico	Record low maximum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Mt Pleasant 1N	United States	Record daily precipitation	67.6 mm (2.7 in)	33 of 100 (Routine)
Tuscaloosa AP ASOS	United States	Record daily precipitation	51.8 mm (2.0 in)	33 of 100 (Routine)
Yecora (Smn)	Mexico	Record daily precipitation	58.9 mm (2.3 in)	32 of 100 (Routine)
Milledgeville	United States	Record daily precipitation	79.2 mm (3.1 in)	32 of 100 (Routine)
Siloam 3N	United States	Record daily precipitation	69.9 mm (2.8 in)	32 of 100 (Routine)
Holter Dam	United States	Record high maximum temperature	33.3 C (91.9 F)	32 of 100 (Routine)
Chicapa de Castro	Mexico	Record low minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Lancang	China	Record daily precipitation	62.5 mm (2.5 in)	30 of 100 (Routine)
La Poza Honda	Mexico	Record daily precipitation	154.9 mm (6.1 in)	30 of 100 (Routine)
El Tule	Mexico	Record high minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Redwood City	United States	Record high maximum temperature	36.1 C (97.0 F)	30 of 100 (Routine)
Elliston	United States	Record high minimum temperature	7.8 C (46.0 F)	30 of 100 (Routine)
Lovelock	United States	Record high minimum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
Sussex 1 NW	United States	Record low maximum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Gourdon	France	Record daily precipitation	34.4 mm (1.4 in)	29 of 100 (Routine)
Mamantel	Mexico	Record daily precipitation	63.0 mm (2.5 in)	29 of 100 (Routine)
Linguere	Senegal	Record low maximum temperature	28.0 C (82.4 F)	29 of 100 (Routine)
San Sebastian - Igueldo	Spain	Record daily precipitation	50.6 mm (2.0 in)	29 of 100 (Routine)

Counts by Type and Timescale

692 records

Records set or tied on 18 September 2009 by type: Highest daily maximum 179, Lowest daily maximum 71, Highest daily minimum 230, Lowest daily minimum 51, Heaviest daily rainfall 161.

Records on 18 September 2009 by type
Record type	Records
Highest daily maximum	179
Lowest daily maximum	71
Highest daily minimum	230
Lowest daily minimum	51
Heaviest daily rainfall	161
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 September 2009 by timescale: all-time 0, monthly 11, daily 681.

How Much Records Were Beaten By

503 broken records

Margins by which the 503 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.9. Ties are not counted.

Top 20 by Significance

18 September 2009

Top 20 records on 18 September 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 2009	Har Kenaan, IL	daily rain	32.7 mm (1.3 in)	32.7 mm (1.3 in)	68 years	67 of 100 (Major)
18 September 2009	Camden 1, US	daily rain	94.0 mm (3.7 in)	54.1 mm (2.1 in)	86 years	63 of 100 (Major)
18 September 2009	Bilbao Aeropuerto, ES	daily rain	90.1 mm (3.5 in)	60.7 mm (2.4 in)	48 years	60 of 100 (Major)
18 September 2009	Velikij_Ustjug, RU	daily rain	27.5 mm (1.1 in)	19.4 mm (0.8 in)	44 years	58 of 100 (Notable)
18 September 2009	Onega, RU	daily rain	28.2 mm (1.1 in)	17.2 mm (0.7 in)	40 years	53 of 100 (Notable)
18 September 2009	Hawkinsville, US	daily rain	121.7 mm (4.8 in)	50.6 mm (2.0 in)	38 years	50 of 100 (Notable)
18 September 2009	Vitoria/Foronda, ES	daily rain	33.4 mm (1.3 in)	24.9 mm (1.0 in)	23 years	49 of 100 (Notable)
18 September 2009	High Springs, US	daily rain	139.7 mm (5.5 in)	102.9 mm (4.1 in)	8 years	48 of 100 (Notable)
18 September 2009	Ajojucar, MX	daily rain	56.9 mm (2.2 in)	34.5 mm (1.4 in)	26 years	47 of 100 (Notable)
18 September 2009	San Juanico, MX	daily rain	59.9 mm (2.4 in)	49.0 mm (1.9 in)	4 years	45 of 100 (Notable)
18 September 2009	Bradfordsville, US	daily rain	66.0 mm (2.6 in)	50.0 mm (2.0 in)	36 years	45 of 100 (Notable)
18 September 2009	Waynesboro, US	daily rain	90.7 mm (3.6 in)	28.7 mm (1.1 in)	66 years	45 of 100 (Notable)
18 September 2009	Leeds, US	daily rain	129.5 mm (5.1 in)	47.2 mm (1.9 in)	36 years	44 of 100 (Notable)
18 September 2009	Moorhead, US	daily rain	35.6 mm (1.4 in)	17.8 mm (0.7 in)	82 years	42 of 100 (Notable)
18 September 2009	Trident, US	daily high min	20.0 C (68.0 F)	8.3 C (14.9 F)	40 years	41 of 100 (Notable)
18 September 2009	Crosby, US	daily high min	13.9 C (57.0 F)	1.1 C (2.0 F)	99 years	41 of 100 (Notable)
18 September 2009	Lake Cormorant, US	daily rain	73.2 mm (2.9 in)	47.0 mm (1.9 in)	3 years	40 of 100 (Notable)
18 September 2009	Chinook, US	daily high min	12.8 C (55.0 F)	1.1 C (2.0 F)	96 years	40 of 100 (Notable)
18 September 2009	Mtn Park, US	daily rain	26.2 mm (1.0 in)	11.5 mm (0.5 in)	67 years	40 of 100 (Notable)
18 September 2009	Westhope, US	daily high min	13.9 C (57.0 F)	1.1 C (2.0 F)	95 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

1803 to 2009

Records set or tied on this calendar date in each year from 1803 to 2009. 2009 had 692 records.

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

Records on 09-18 in each year
Year	Records
1803	1
1811	1
1814	1
1819	1
1829	1
1832	1
1834	1
1835	1
1837	2
1847	2
1848	1
1849	1
1851	4
1859	1
1861	1
1865	1
1869	1
1871	1
1875	1
1876	2
1877	1
1879	1
1880	1
1881	1
1882	1
1885	1
1886	4
1889	6
1890	1
1891	1
1893	4
1894	2
1895	2
1896	4
1897	3
1898	5
1899	3
1900	2
1901	10
1902	8
1903	58
1904	6
1905	22
1906	16
1907	4
1908	11
1909	17
1910	5
1911	8
1912	43
1913	44
1914	56
1915	41
1916	58
1917	99
1918	57
1919	48
1920	56
1921	213
1922	45
1923	114
1924	62
1925	269
1926	205
1927	189
1928	114
1929	309
1930	124
1931	429
1932	226
1933	370
1934	188
1935	281
1936	155
1937	422
1938	373
1939	190
1940	402
1941	318
1942	1,001
1943	624
1944	503
1945	732
1946	576
1947	927
1948	427
1949	356
1950	370
1951	320
1952	340
1953	245
1954	446
1955	672
1956	587
1957	429
1958	491
1959	829
1960	351
1961	478
1962	360
1963	453
1964	282
1965	1,172
1966	498
1967	357
1968	763
1969	424
1970	377
1971	1,245
1972	691
1973	593
1974	559
1975	976
1976	615
1977	619
1978	1,162
1979	709
1980	652
1981	1,671
1982	603
1983	936
1984	951
1985	636
1986	730
1987	1,244
1988	997
1989	778
1990	904
1991	1,377
1992	821
1993	747
1994	852
1995	935
1996	1,237
1997	935
1998	1,038
1999	583
2000	1,146
2001	993
2002	828
2003	815
2004	1,027
2005	781
2006	1,309
2007	670
2008	697
2009	692
2010	1,040
2011	1,050
2012	922
2013	666
2014	682
2015	934
2016	893
2017	518
2018	1,200
2019	768
2020	682
2021	582
2022	613
2023	639
2024	687
2025	471
2026	864

Download the Data

Data for records on 2009-09-18: 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	470
20 to 40	24
40 to 60	7
60 to 80	1
80 to 100	0
100 to 120	1