Weather Records on 18 April 2009

624 weather records were set or tied worldwide on 18 April 2009. Highest significance: Georgetown, US.

Key Facts for 18 April 2009

On 18 April 2009, 624 weather records were set or tied at long-record stations worldwide.
212 were record highs and 130 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 28 monthly and 595 daily.
Georgetown set a daily record precipitation of 36.3 mm (1.4 in) on 18 April 2009.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 466 records.

Record Map

624 stations

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

Weather records on 18 April 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Georgetown	United States	Record daily precipitation	36.3 mm (1.4 in)	72 of 100 (Major)
Quinter	United States	Record daily precipitation	64.8 mm (2.6 in)	70 of 100 (Major)
Golden	United States	Record daily snowfall	14.0 cm (5.5 in)	68 of 100 (Major)
Flatonia 4SE	United States	Record daily precipitation	208.8 mm (8.2 in)	66 of 100 (Major)
La Grange	United States	Record daily precipitation	142.7 mm (5.6 in)	62 of 100 (Major)
Cerro	United States	Record snow depth	17.8 cm (7.0 in)	61 of 100 (Major)
Georgetown	United States	Record snow depth	55.9 cm (22.0 in)	60 of 100 (Major)
Houston William P Hobby AP	United States	Record daily precipitation	130.8 mm (5.1 in)	60 of 100 (Major)
Dresden	United States	Record daily precipitation	53.8 mm (2.1 in)	59 of 100 (Notable)
Haikou	China	Record daily precipitation	112.6 mm (4.4 in)	56 of 100 (Notable)
Wakeeney	United States	Record daily precipitation	68.1 mm (2.7 in)	56 of 100 (Notable)
Akron 4 E	United States	Record daily precipitation	33.8 mm (1.3 in)	55 of 100 (Notable)
Byers 5 ENE	United States	Record daily precipitation	50.8 mm (2.0 in)	55 of 100 (Notable)
Castle Rock	United States	Record daily snowfall	28.4 cm (11.2 in)	54 of 100 (Notable)
Georgetown	United States	Record daily snowfall	43.2 cm (17.0 in)	54 of 100 (Notable)
Cheb	Czech Republic	Record daily precipitation	36.8 mm (1.4 in)	53 of 100 (Notable)
Stratton	United States	Record daily precipitation	34.3 mm (1.4 in)	53 of 100 (Notable)
Winter Park	United States	Record daily snowfall	43.2 cm (17.0 in)	52 of 100 (Notable)
Gonzales 2S	United States	Record daily precipitation	149.6 mm (5.9 in)	52 of 100 (Notable)
Holyoke	United States	Record daily precipitation	39.1 mm (1.5 in)	51 of 100 (Notable)
Fayetteville (Pwc)	United States	Record low minimum temperature	-5.6 C (21.9 F)	51 of 100 (Notable)
Huntsville	United States	Record daily precipitation	132.1 mm (5.2 in)	51 of 100 (Notable)
Bailey	United States	Record daily precipitation	42.9 mm (1.7 in)	50 of 100 (Notable)
Brighton 3 SE	United States	Record daily precipitation	42.9 mm (1.7 in)	50 of 100 (Notable)
Hallettsville 2 N	United States	Record daily precipitation	127.3 mm (5.0 in)	50 of 100 (Notable)
Bonny Dam 2NE	United States	Record daily precipitation	50.0 mm (2.0 in)	49 of 100 (Notable)
Gove 4W	United States	Record daily precipitation	50.5 mm (2.0 in)	49 of 100 (Notable)
Hill City 1E	United States	Record daily precipitation	61.0 mm (2.4 in)	49 of 100 (Notable)
Hoxie	United States	Record daily precipitation	57.4 mm (2.3 in)	49 of 100 (Notable)
Studley 9NNW	United States	Record daily precipitation	52.8 mm (2.1 in)	49 of 100 (Notable)
Cabin Creek	United States	Record daily precipitation	45.7 mm (1.8 in)	48 of 100 (Notable)
Castle Rock	United States	Record daily precipitation	29.0 mm (1.1 in)	48 of 100 (Notable)
Leroy 5 WSW	United States	Record daily precipitation	42.4 mm (1.7 in)	48 of 100 (Notable)
Granada/Aeropuerto	Spain	Record daily precipitation	26.6 mm (1.0 in)	47 of 100 (Notable)
Lenora Coop	United States	Record daily precipitation	57.2 mm (2.3 in)	47 of 100 (Notable)
Brenham	United States	Record daily precipitation	104.6 mm (4.1 in)	47 of 100 (Notable)
Port Arthur SE Tx Rgnl AP	United States	Record daily precipitation	119.4 mm (4.7 in)	47 of 100 (Notable)
Evergreen	United States	Record daily precipitation	45.7 mm (1.8 in)	46 of 100 (Notable)
Gross Rsvr	United States	Record daily precipitation	64.3 mm (2.5 in)	45 of 100 (Notable)
Winter Park	United States	Record daily precipitation	37.6 mm (1.5 in)	45 of 100 (Notable)
Yuma	United States	Record daily precipitation	36.8 mm (1.4 in)	45 of 100 (Notable)
Saint Peter 4ENE	United States	Record daily precipitation	52.1 mm (2.1 in)	45 of 100 (Notable)
San Cristobal	Mexico	Record low minimum temperature	3.9 C (39.0 F)	44 of 100 (Notable)
Ness City	United States	Record daily precipitation	58.9 mm (2.3 in)	44 of 100 (Notable)
Manassa	United States	Record daily snowfall	5.1 cm (2.0 in)	43 of 100 (Notable)
Wakeeney 16N	United States	Record daily precipitation	60.7 mm (2.4 in)	43 of 100 (Notable)
San Isidro	Mexico	Record high maximum temperature	45.0 C (113.0 F)	42 of 100 (Notable)
Wray	United States	Record daily precipitation	33.0 mm (1.3 in)	42 of 100 (Notable)
Beaver City	United States	Record daily precipitation	26.7 mm (1.1 in)	42 of 100 (Notable)
Dime Box	United States	Record daily precipitation	101.6 mm (4.0 in)	42 of 100 (Notable)
Rison	United States	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
Genoa	United States	Record daily precipitation	33.5 mm (1.3 in)	41 of 100 (Notable)
Ransom 2NE	United States	Record daily precipitation	61.7 mm (2.4 in)	41 of 100 (Notable)
Saint Francis	United States	Record daily precipitation	40.1 mm (1.6 in)	41 of 100 (Notable)
Baytown	United States	Record daily precipitation	73.9 mm (2.9 in)	41 of 100 (Notable)
Cheesman	United States	Record daily snowfall	19.1 cm (7.5 in)	40 of 100 (Notable)
Gross Rsvr	United States	Record snow depth	76.2 cm (30.0 in)	40 of 100 (Notable)
Sterling	United States	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Hays 1 S	United States	Record daily precipitation	33.5 mm (1.3 in)	40 of 100 (Notable)
Norcatur 3WSW	United States	Record daily precipitation	40.1 mm (1.6 in)	40 of 100 (Notable)

Counts by Type and Timescale

624 records

Records set or tied on 18 April 2009 by type: Highest daily maximum 79, Lowest daily maximum 58, Highest daily minimum 133, Lowest daily minimum 72, Heaviest daily rainfall 218, Heaviest daily snowfall 32, Deepest snow cover 32.

Records on 18 April 2009 by type
Record type	Records
Highest daily maximum	79
Lowest daily maximum	58
Highest daily minimum	133
Lowest daily minimum	72
Heaviest daily rainfall	218
Heaviest daily snowfall	32
Deepest snow cover	32

Records on 18 April 2009 by timescale: all-time 1, monthly 28, daily 595.

How Much Records Were Beaten By

477 broken records

Margins by which the 477 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 457.0. Ties are not counted.

Top 20 by Significance

18 April 2009

Top 20 records on 18 April 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 2009	Georgetown, US	daily rain	36.3 mm (1.4 in)	22.3 mm (0.9 in)	96 years	72 of 100 (Major)
18 April 2009	Quinter, US	daily rain	64.8 mm (2.6 in)	40.9 mm (1.6 in)	67 years	70 of 100 (Major)
18 April 2009	Golden, US	daily snowfall	14.0 cm (5.5 in)	14.0 cm (5.5 in)	106 years	68 of 100 (Major)
18 April 2009	Flatonia 4SE, US	monthly rain	208.8 mm (8.2 in)	45.7 mm (1.8 in)	73 years	66 of 100 (Major)
18 April 2009	La Grange, US	daily rain	142.7 mm (5.6 in)	114.8 mm (4.5 in)	43 years	62 of 100 (Major)
18 April 2009	Cerro, US	daily snow depth	17.8 cm (7.0 in)	17.8 cm (7.0 in)	88 years	61 of 100 (Major)
18 April 2009	Georgetown, US	daily snow depth	55.9 cm (22.0 in)	43.2 cm (17.0 in)	34 years	60 of 100 (Major)
18 April 2009	Houston William P Hobby AP, US	daily rain	130.8 mm (5.1 in)	100.3 mm (3.9 in)	43 years	60 of 100 (Major)
18 April 2009	Dresden, US	daily rain	53.8 mm (2.1 in)	28.1 mm (1.1 in)	67 years	59 of 100 (Notable)
18 April 2009	Haikou, CN	daily rain	112.6 mm (4.4 in)	63.8 mm (2.5 in)	36 years	56 of 100 (Notable)
18 April 2009	Wakeeney, US	daily rain	68.1 mm (2.7 in)	33.6 mm (1.3 in)	39 years	56 of 100 (Notable)
18 April 2009	Akron 4 E, US	daily rain	33.8 mm (1.3 in)	14.7 mm (0.6 in)	88 years	55 of 100 (Notable)
18 April 2009	Byers 5 ENE, US	daily rain	50.8 mm (2.0 in)	19.0 mm (0.7 in)	88 years	55 of 100 (Notable)
18 April 2009	Castle Rock, US	daily snowfall	28.4 cm (11.2 in)	13.2 cm (5.2 in)	96 years	54 of 100 (Notable)
18 April 2009	Georgetown, US	daily snowfall	43.2 cm (17.0 in)	30.0 cm (11.8 in)	34 years	54 of 100 (Notable)
18 April 2009	Cheb, CZ	daily rain	36.8 mm (1.4 in)	29.7 mm (1.2 in)	23 years	53 of 100 (Notable)
18 April 2009	Stratton, US	daily rain	34.3 mm (1.4 in)	21.3 mm (0.8 in)	67 years	53 of 100 (Notable)
18 April 2009	Winter Park, US	daily snowfall	43.2 cm (17.0 in)	28.0 cm (11.0 in)	23 years	52 of 100 (Notable)
18 April 2009	Gonzales 2S, US	monthly rain	149.6 mm (5.9 in)	43.2 mm (1.7 in)	32 years	52 of 100 (Notable)
18 April 2009	Holyoke, US	daily rain	39.1 mm (1.5 in)	13.7 mm (0.5 in)	88 years	51 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

1793 to 2009

Records set or tied on this calendar date in each year from 1793 to 2009. 2009 had 624 records.

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

Records on 04-18 in each year
Year	Records
1793	1
1807	2
1815	1
1838	1
1847	1
1849	1
1851	1
1852	3
1854	3
1855	1
1865	4
1867	1
1870	1
1871	1
1875	4
1877	2
1878	1
1879	3
1880	2
1884	2
1886	2
1887	3
1888	1
1889	1
1890	2
1891	1
1892	3
1893	5
1894	7
1895	2
1896	3
1897	5
1898	8
1899	2
1900	2
1901	6
1902	5
1903	11
1904	9
1905	12
1906	18
1907	17
1908	37
1909	19
1910	19
1911	25
1912	21
1913	26
1914	38
1915	31
1916	22
1917	40
1918	76
1919	16
1920	64
1921	58
1922	85
1923	107
1924	101
1925	154
1926	322
1927	391
1928	323
1929	126
1930	113
1931	173
1932	326
1933	211
1934	391
1935	264
1936	483
1937	477
1938	711
1939	525
1940	322
1941	496
1942	287
1943	298
1944	259
1945	371
1946	357
1947	444
1948	932
1949	345
1950	244
1951	658
1952	536
1953	1,322
1954	442
1955	817
1956	467
1957	629
1958	370
1959	468
1960	320
1961	520
1962	484
1963	662
1964	449
1965	363
1966	776
1967	882
1968	867
1969	795
1970	771
1971	1,106
1972	470
1973	953
1974	326
1975	751
1976	1,309
1977	717
1978	803
1979	841
1980	842
1981	708
1982	616
1983	2,082
1984	625
1985	1,119
1986	622
1987	1,068
1988	936
1989	625
1990	1,368
1991	780
1992	702
1993	730
1994	1,218
1995	1,601
1996	826
1997	1,256
1998	1,011
1999	1,428
2000	912
2001	1,487
2002	2,084
2003	969
2004	846
2005	622
2006	1,262
2007	675
2008	913
2009	624
2010	478
2011	1,122
2012	744
2013	2,509
2014	534
2015	519
2016	973
2017	588
2018	1,202
2019	601
2020	770
2021	592
2022	1,013
2023	739
2024	641
2025	997
2026	498

Download the Data

Data for records on 2009-04-18: 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 100	458
100 to 200	12
200 to 300	3
300 to 400	2
400 to 500	2