Weather Records on 18 April 2003

969 weather records were set or tied worldwide on 18 April 2003. Highest significance: Lajas Substn, PR.

Key Facts for 18 April 2003

On 18 April 2003, 969 weather records were set or tied at long-record stations worldwide.
392 were record highs and 340 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 41 monthly and 927 daily.
Lajas Substn set a monthly record daily precipitation of 109.2 mm (4.3 in) on 18 April 2003.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 464 records.

Record Map

969 stations

969 station records on 18 April 2003 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 2003: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lajas Substn	Puerto Rico [United States]	Record daily precipitation	109.2 mm (4.3 in)	64 of 100 (Major)
Laurens	United States	Record daily precipitation	77.5 mm (3.1 in)	61 of 100 (Major)
Gaston Shoals	United States	Record daily precipitation	72.1 mm (2.8 in)	60 of 100 (Major)
Coamo 2 SW	Puerto Rico [United States]	Record daily precipitation	139.4 mm (5.5 in)	59 of 100 (Notable)
Udon Thani	Thailand	Record daily precipitation	94.7 mm (3.7 in)	58 of 100 (Notable)
Sabana Grande 2 ENE	Puerto Rico [United States]	Record daily precipitation	58.9 mm (2.3 in)	57 of 100 (Notable)
Patterson	United States	Record daily precipitation	59.7 mm (2.4 in)	57 of 100 (Notable)
Guayama 1SW	Puerto Rico [United States]	Record daily precipitation	86.9 mm (3.4 in)	55 of 100 (Notable)
Kerki	Turkmenistan	Record daily precipitation	25.9 mm (1.0 in)	54 of 100 (Notable)
Lincolnton 4 W	United States	Record daily precipitation	76.2 mm (3.0 in)	54 of 100 (Notable)
Juncos 1 SE	Puerto Rico [United States]	Record daily precipitation	144.0 mm (5.7 in)	53 of 100 (Notable)
Willmar Wwtp	United States	Record daily precipitation	31.8 mm (1.3 in)	51 of 100 (Notable)
Celo 2 S	United States	Record daily precipitation	72.1 mm (2.8 in)	50 of 100 (Notable)
Pacific Heights	Australia	Record daily precipitation	46.2 mm (1.8 in)	49 of 100 (Notable)
Gallatin Gateway 10SSW	United States	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Morganton	United States	Record daily precipitation	57.2 mm (2.3 in)	48 of 100 (Notable)
Lockhart	United States	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Shurchi	Uzbekistan	Record daily precipitation	29.4 mm (1.2 in)	47 of 100 (Notable)
San Lorenzo 1SW	Puerto Rico [United States]	Record daily precipitation	135.1 mm (5.3 in)	46 of 100 (Notable)
Gyshgy	Turkmenistan	Record daily precipitation	28.2 mm (1.1 in)	46 of 100 (Notable)
Stornoway Airport	United Kingdom	Record high maximum temperature	17.1 C (62.8 F)	46 of 100 (Notable)
Gaffney 6 E	United States	Record daily precipitation	81.3 mm (3.2 in)	46 of 100 (Notable)
Jinan	China	Record daily precipitation	41.5 mm (1.6 in)	45 of 100 (Notable)
Rochester	United States	Record low maximum temperature	2.8 C (37.0 F)	45 of 100 (Notable)
Salisbury	United States	Record daily precipitation	41.1 mm (1.6 in)	44 of 100 (Notable)
Norris	United States	Record daily precipitation	71.4 mm (2.8 in)	44 of 100 (Notable)
Huimin	China	Record daily precipitation	28.2 mm (1.1 in)	43 of 100 (Notable)
Agalega	Mauritius	Record daily precipitation	89.9 mm (3.5 in)	43 of 100 (Notable)
San Jose de Raices	Mexico	Record high minimum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Milford 2 SE	United States	Record low maximum temperature	7.2 C (45.0 F)	43 of 100 (Notable)
Laurel 3 W	United States	Record low maximum temperature	7.2 C (45.0 F)	43 of 100 (Notable)
Marion	United States	Record daily precipitation	72.6 mm (2.9 in)	43 of 100 (Notable)
N Fk 2	United States	Record daily precipitation	54.6 mm (2.1 in)	43 of 100 (Notable)
Quanah 2 SW	United States	Record daily precipitation	42.7 mm (1.7 in)	43 of 100 (Notable)
Santo Domingo	Mexico	Record low minimum temperature	10.0 C (50.0 F)	42 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	101.6 mm (4.0 in)	42 of 100 (Notable)
Paraiso	Puerto Rico [United States]	Record daily precipitation	224.5 mm (8.8 in)	42 of 100 (Notable)
Tiree	United Kingdom	Record high maximum temperature	18.7 C (65.7 F)	42 of 100 (Notable)
Solomons	United States	Record low maximum temperature	9.4 C (48.9 F)	42 of 100 (Notable)
Elizabeth	United States	Record low maximum temperature	6.1 C (43.0 F)	42 of 100 (Notable)
Maunabo	Puerto Rico [United States]	Record daily precipitation	134.1 mm (5.3 in)	41 of 100 (Notable)
Kvikkjokk-Arrenjarka	Sweden	Record high maximum temperature	14.0 C (57.2 F)	41 of 100 (Notable)
Bajramaly	Turkmenistan	Record low maximum temperature	9.3 C (48.7 F)	41 of 100 (Notable)
San Simon	United States	Record low maximum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Newark Ag Farm	United States	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Lawrence	United States	Record low minimum temperature	-3.9 C (25.0 F)	41 of 100 (Notable)
Hightstown 2 W	United States	Record low maximum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Toms River	United States	Record low maximum temperature	5.0 C (41.0 F)	41 of 100 (Notable)
Jokkmokk	Sweden	Record high maximum temperature	16.0 C (60.8 F)	40 of 100 (Notable)
Casar	United States	Record daily precipitation	66.0 mm (2.6 in)	40 of 100 (Notable)
Grandfather Mtn	United States	Record daily precipitation	70.6 mm (2.8 in)	40 of 100 (Notable)
Santuck	United States	Record daily precipitation	66.0 mm (2.6 in)	40 of 100 (Notable)
Kingsport	United States	Record daily precipitation	33.8 mm (1.3 in)	40 of 100 (Notable)
Dalian	China	Record daily precipitation	68.9 mm (2.7 in)	39 of 100 (Notable)
Chania	Greece	Record daily precipitation	37.0 mm (1.5 in)	39 of 100 (Notable)
Aguirre	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	39 of 100 (Notable)
Gallivare_A	Sweden	Record high maximum temperature	13.7 C (56.7 F)	39 of 100 (Notable)
Iron Mtn-Kingsford Wwtp	United States	Record low maximum temperature	0.0 C (32.0 F)	39 of 100 (Notable)
Coahuayutla	Mexico	Record low minimum temperature	8.9 C (48.0 F)	38 of 100 (Notable)
Juncos 1 SE	Puerto Rico [United States]	Record low maximum temperature	22.8 C (73.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

969 records

Records set or tied on 18 April 2003 by type: Highest daily maximum 261, Lowest daily maximum 222, Highest daily minimum 131, Lowest daily minimum 118, Heaviest daily rainfall 222, Heaviest daily snowfall 9, Deepest snow cover 6.

Records on 18 April 2003 by type
Record type	Records
Highest daily maximum	261
Lowest daily maximum	222
Highest daily minimum	131
Lowest daily minimum	118
Heaviest daily rainfall	222
Heaviest daily snowfall	9
Deepest snow cover	6

Records on 18 April 2003 by timescale: all-time 1, monthly 41, daily 927.

How Much Records Were Beaten By

777 broken records

Margins by which the 777 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 93.2. Ties are not counted.

Top 20 by Significance

18 April 2003

Top 20 records on 18 April 2003 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 2003	Lajas Substn, PR	monthly rain	109.2 mm (4.3 in)	37.3 mm (1.5 in)	49 years	64 of 100 (Major)
18 April 2003	Laurens, US	daily rain	77.5 mm (3.1 in)	50.1 mm (2.0 in)	42 years	61 of 100 (Major)
18 April 2003	Gaston Shoals, US	daily rain	72.1 mm (2.8 in)	38.8 mm (1.5 in)	68 years	60 of 100 (Major)
18 April 2003	Coamo 2 SW, PR	monthly rain	139.4 mm (5.5 in)	57.1 mm (2.2 in)	17 years	59 of 100 (Notable)
18 April 2003	Udon Thani, TH	daily rain	94.7 mm (3.7 in)	83.8 mm (3.3 in)	41 years	58 of 100 (Notable)
18 April 2003	Sabana Grande 2 ENE, PR	daily rain	58.9 mm (2.3 in)	36.0 mm (1.4 in)	86 years	57 of 100 (Notable)
18 April 2003	Patterson, US	daily rain	59.7 mm (2.4 in)	27.9 mm (1.1 in)	102 years	57 of 100 (Notable)
18 April 2003	Guayama 1SW, PR	daily rain	86.9 mm (3.4 in)	46.3 mm (1.8 in)	20 years	55 of 100 (Notable)
18 April 2003	Kerki, TM	daily rain	25.9 mm (1.0 in)	20.3 mm (0.8 in)	60 years	54 of 100 (Notable)
18 April 2003	Lincolnton 4 W, US	daily rain	76.2 mm (3.0 in)	49.3 mm (1.9 in)	33 years	54 of 100 (Notable)
18 April 2003	Juncos 1 SE, PR	daily rain	144.0 mm (5.7 in)	93.2 mm (3.7 in)	20 years	53 of 100 (Notable)
18 April 2003	Willmar Wwtp, US	daily rain	31.8 mm (1.3 in)	10.2 mm (0.4 in)	108 years	51 of 100 (Notable)
18 April 2003	Celo 2 S, US	daily rain	72.1 mm (2.8 in)	54.1 mm (2.1 in)	21 years	50 of 100 (Notable)
18 April 2003	Pacific Heights, AU	daily rain	46.2 mm (1.8 in)	21.3 mm (0.8 in)	108 years	49 of 100 (Notable)
18 April 2003	Gallatin Gateway 10SSW, US	daily rain	47.5 mm (1.9 in)	35.3 mm (1.4 in)	10 years	48 of 100 (Notable)
18 April 2003	Morganton, US	daily rain	57.2 mm (2.3 in)	19.4 mm (0.8 in)	78 years	48 of 100 (Notable)
18 April 2003	Lockhart, US	daily rain	76.2 mm (3.0 in)	60.5 mm (2.4 in)	4 years	48 of 100 (Notable)
18 April 2003	Shurchi, UZ	daily rain	29.4 mm (1.2 in)	16.7 mm (0.7 in)	61 years	47 of 100 (Notable)
18 April 2003	San Lorenzo 1SW, PR	monthly rain	135.1 mm (5.3 in)	31.0 mm (1.2 in)	16 years	46 of 100 (Notable)
18 April 2003	Gyshgy, TM	daily rain	28.2 mm (1.1 in)	12.0 mm (0.5 in)	72 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

1793 to 2003

Records set or tied on this calendar date in each year from 1793 to 2003. 2003 had 969 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 2003-04-18: 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 20	724
20 to 40	40
40 to 60	10
60 to 80	1
80 to 100	2