Weather Records on 18 October 2003

1,097 weather records were set or tied worldwide on 18 October 2003. Highest significance: Zoh Laguna, MX.

Key Facts for 18 October 2003

On 18 October 2003, 1,097 weather records were set or tied at long-record stations worldwide.
874 were record highs and 164 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 24 monthly and 1,073 daily.
Zoh Laguna set a daily record precipitation of 72.9 mm (2.9 in) on 18 October 2003.
Across 167 earlier years (1794 to 2025) the same calendar date averaged 430 records.

Record Map

1,097 stations

1,097 station records on 18 October 2003 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 October 2003: highest significance records shown on the map
Station	Country	Type	Value	Significance
Zoh Laguna	Mexico	Record daily precipitation	72.9 mm (2.9 in)	56 of 100 (Notable)
Ola	United States	Record high maximum temperature	26.7 C (80.1 F)	46 of 100 (Notable)
San Miguel Ejutla	Mexico	Record high maximum temperature	38.9 C (102.0 F)	44 of 100 (Notable)
Kirchdorf/Poel	Germany	Record low minimum temperature	-1.2 C (29.8 F)	42 of 100 (Notable)
Frontera Hidalgo	Mexico	Record daily precipitation	86.4 mm (3.4 in)	42 of 100 (Notable)
Madrid/Cuatrovientos	Spain	Record daily precipitation	42.0 mm (1.7 in)	42 of 100 (Notable)
Ft Grant	United States	Record high maximum temperature	31.7 C (89.1 F)	42 of 100 (Notable)
Clover Valley	United States	Record high maximum temperature	27.2 C (81.0 F)	42 of 100 (Notable)
Castle Dale	United States	Record high maximum temperature	27.8 C (82.0 F)	42 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record low minimum temperature	-8.0 C (17.6 F)	41 of 100 (Notable)
Santa Rosalia (Dge)	Mexico	Record high minimum temperature	27.8 C (82.0 F)	41 of 100 (Notable)
Wentworth 2.5 WNW	United States	Record high maximum temperature	28.3 C (82.9 F)	41 of 100 (Notable)
Anaconda	United States	Record high maximum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
Aurora	United States	Record high maximum temperature	31.7 C (89.1 F)	40 of 100 (Notable)
Goodland	United States	Record high maximum temperature	32.2 C (90.0 F)	40 of 100 (Notable)
Ely AP	United States	Record high maximum temperature	26.7 C (80.1 F)	40 of 100 (Notable)
Kremsmuenster	Austria	Record low minimum temperature	-2.5 C (27.5 F)	39 of 100 (Notable)
Roy	United States	Record high minimum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Altotonga	Mexico	Record daily precipitation	77.5 mm (3.1 in)	38 of 100 (Notable)
Grace	United States	Record high maximum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Holter Dam	United States	Record high maximum temperature	29.4 C (84.9 F)	38 of 100 (Notable)
South Pass City	United States	Record high minimum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Madrid/Barajas	Spain	Record daily precipitation	31.1 mm (1.2 in)	37 of 100 (Notable)
Redlands	United States	Record high maximum temperature	38.9 C (102.0 F)	37 of 100 (Notable)
Superior	United States	Record high maximum temperature	30.6 C (87.1 F)	37 of 100 (Notable)
Faith	United States	Record high minimum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Mitt. Narsarsuaq	Greenland [Denmark]	Record high minimum temperature	11.6 C (52.9 F)	36 of 100 (Notable)
Marnitz	Germany	Record low minimum temperature	-4.0 C (24.8 F)	36 of 100 (Notable)
Tanhuato (Smn)	Mexico	Record low minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Mitchell 5E	United States	Record high maximum temperature	28.3 C (82.9 F)	36 of 100 (Notable)
Lemmon	United States	Record high minimum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Black Rock	United States	Record high maximum temperature	30.0 C (86.0 F)	36 of 100 (Notable)
Lovell	United States	Record high maximum temperature	26.1 C (79.0 F)	36 of 100 (Notable)
El Potosi	Mexico	Record daily precipitation	41.9 mm (1.6 in)	35 of 100 (Notable)
Castle Hot Springs	United States	Record high minimum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Gila Bend 2SE	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Quartzsite	United States	Record high maximum temperature	40.0 C (104.0 F)	35 of 100 (Notable)
Sioux Ctr 2 SE	United States	Record high maximum temperature	28.9 C (84.0 F)	35 of 100 (Notable)
Valley Falls	United States	Record high minimum temperature	16.1 C (61.0 F)	35 of 100 (Notable)
Santo Domingo	Mexico	Record low minimum temperature	8.9 C (48.0 F)	34 of 100 (Routine)
Ft Collins	United States	Record high maximum temperature	28.3 C (82.9 F)	34 of 100 (Routine)
Atlantic 1 NE	United States	Record high maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Huntley Exp STN	United States	Record high maximum temperature	29.4 C (84.9 F)	34 of 100 (Routine)
San Jon	United States	Record high maximum temperature	32.2 C (90.0 F)	34 of 100 (Routine)
Sundance	United States	Record high maximum temperature	26.1 C (79.0 F)	34 of 100 (Routine)
Clayton Muni Air Pk	United States	Record high maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Bastia	France	Record low maximum temperature	14.0 C (57.2 F)	33 of 100 (Routine)
Madrid - Retiro	Spain	Record daily precipitation	34.3 mm (1.4 in)	33 of 100 (Routine)
Stevensville	United States	Record high maximum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Colony	United States	Record high minimum temperature	11.1 C (52.0 F)	33 of 100 (Routine)
Sheridan Fld STN	United States	Record high maximum temperature	31.1 C (88.0 F)	33 of 100 (Routine)
Motozintla (Smn)	Mexico	Record high minimum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Jerome	United States	Record high maximum temperature	30.0 C (86.0 F)	32 of 100 (Routine)
Lifton Pumping STN	United States	Record high maximum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Norris Madison Pwr House	United States	Record high maximum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Genoa 2 W	United States	Record high maximum temperature	33.3 C (91.9 F)	32 of 100 (Routine)
Cimarron 4 SW	United States	Record high maximum temperature	28.3 C (82.9 F)	32 of 100 (Routine)
Alexandria	United States	Record high maximum temperature	29.4 C (84.9 F)	32 of 100 (Routine)
Ardmore 1 NW	United States	Record high maximum temperature	29.4 C (84.9 F)	32 of 100 (Routine)
Kennebec	United States	Record high maximum temperature	31.1 C (88.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

1,097 records

Records set or tied on 18 October 2003 by type: Highest daily maximum 605, Lowest daily maximum 68, Highest daily minimum 269, Lowest daily minimum 96, Heaviest daily rainfall 59.

Records on 18 October 2003 by type
Record type	Records
Highest daily maximum	605
Lowest daily maximum	68
Highest daily minimum	269
Lowest daily minimum	96
Heaviest daily rainfall	59
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 October 2003 by timescale: all-time 0, monthly 24, daily 1,073.

How Much Records Were Beaten By

784 broken records

Margins by which the 784 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.1. Ties are not counted.

Top 20 by Significance

18 October 2003

Top 20 records on 18 October 2003 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 October 2003	Zoh Laguna, MX	daily rain	72.9 mm (2.9 in)	51.1 mm (2.0 in)	44 years	56 of 100 (Notable)
18 October 2003	Ola, US	daily high max	26.7 C (80.1 F)	3.4 C (6.1 F)	100 years	46 of 100 (Notable)
18 October 2003	San Miguel Ejutla, MX	daily high max	38.9 C (102.0 F)	5.0 C (9.0 F)	70 years	44 of 100 (Notable)
18 October 2003	Kirchdorf/Poel, DE	daily low min	-1.2 C (29.8 F)	0.7 C (1.3 F)	114 years	42 of 100 (Notable)
18 October 2003	Frontera Hidalgo, MX	daily rain	86.4 mm (3.4 in)	40.4 mm (1.6 in)	58 years	42 of 100 (Notable)
18 October 2003	Madrid/Cuatrovientos, ES	daily rain	42.0 mm (1.7 in)	26.5 mm (1.0 in)	1 year	42 of 100 (Notable)
18 October 2003	Ft Grant, US	daily high max	31.7 C (89.1 F)	1.1 C (2.0 F)	101 years	42 of 100 (Notable)
18 October 2003	Clover Valley, US	daily high max	27.2 C (81.0 F)	1.6 C (2.9 F)	100 years	42 of 100 (Notable)
18 October 2003	Castle Dale, US	daily high max	27.8 C (82.0 F)	1.1 C (2.0 F)	100 years	42 of 100 (Notable)
18 October 2003	Bjelasnica, BA	daily low min	-8.0 C (17.6 F)	0.8 C (1.4 F)	103 years	41 of 100 (Notable)
18 October 2003	Santa Rosalia (Dge), MX	daily high min	27.8 C (82.0 F)	3.9 C (7.0 F)	66 years	41 of 100 (Notable)
18 October 2003	Wentworth 2.5 WNW, US	daily high max	28.3 C (82.9 F)	1.1 C (2.0 F)	101 years	41 of 100 (Notable)
18 October 2003	Anaconda, US	daily high max	25.0 C (77.0 F)	0.6 C (1.1 F)	100 years	40 of 100 (Notable)
18 October 2003	Aurora, US	daily high max	31.7 C (89.1 F)	0.6 C (1.1 F)	100 years	40 of 100 (Notable)
18 October 2003	Goodland, US	daily high max	32.2 C (90.0 F)	1.1 C (2.0 F)	96 years	40 of 100 (Notable)
18 October 2003	Ely AP, US	daily high max	26.7 C (80.1 F)	1.1 C (2.0 F)	96 years	40 of 100 (Notable)
18 October 2003	Kremsmuenster, AT	daily low min	-2.5 C (27.5 F)	0.3 C (0.5 F)	97 years	39 of 100 (Notable)
18 October 2003	Roy, US	daily high min	11.7 C (53.1 F)	1.7 C (3.1 F)	88 years	39 of 100 (Notable)
18 October 2003	Altotonga, MX	daily rain	77.5 mm (3.1 in)	18.3 mm (0.7 in)	72 years	38 of 100 (Notable)
18 October 2003	Grace, US	daily high max	25.0 C (77.0 F)	0.6 C (1.1 F)	96 years	38 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

1794 to 2003

Records set or tied on this calendar date in each year from 1794 to 2003. 2003 had 1,097 records.

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

Records on 10-18 in each year
Year	Records
1794	1
1796	1
1799	1
1806	1
1807	1
1810	1
1811	2
1817	1
1832	1
1835	1
1836	1
1843	1
1846	2
1848	1
1849	1
1851	1
1852	1
1859	1
1863	1
1865	2
1866	2
1868	1
1869	1
1871	1
1872	1
1874	4
1876	2
1877	2
1879	3
1881	1
1882	1
1883	2
1887	1
1888	1
1890	4
1892	4
1893	1
1894	3
1895	2
1897	6
1898	5
1899	12
1900	5
1901	5
1902	6
1903	9
1904	12
1905	27
1906	17
1907	11
1908	44
1909	23
1910	50
1911	22
1912	12
1913	26
1914	52
1915	12
1916	64
1917	109
1918	24
1919	31
1920	87
1921	87
1922	59
1923	114
1924	151
1925	153
1926	149
1927	309
1928	316
1929	190
1930	507
1931	350
1932	446
1933	264
1934	222
1935	360
1936	483
1937	671
1938	536
1939	475
1940	532
1941	240
1942	332
1943	844
1944	264
1945	398
1946	355
1947	965
1948	1,128
1949	665
1950	996
1951	325
1952	394
1953	678
1954	621
1955	403
1956	578
1957	220
1958	407
1959	246
1960	612
1961	362
1962	252
1963	492
1964	311
1965	1,066
1966	613
1967	405
1968	737
1969	789
1970	501
1971	1,199
1972	1,581
1973	789
1974	746
1975	779
1976	1,326
1977	533
1978	545
1979	555
1980	1,024
1981	680
1982	654
1983	684
1984	1,331
1985	831
1986	344
1987	518
1988	733
1989	1,196
1990	1,043
1991	999
1992	1,295
1993	1,051
1994	1,296
1995	1,227
1996	795
1997	1,240
1998	1,323
1999	773
2000	823
2001	818
2002	878
2003	1,097
2004	1,156
2005	755
2006	1,328
2007	1,298
2008	531
2009	1,546
2010	634
2011	736
2012	741
2013	430
2014	690
2015	915
2016	1,511
2017	590
2018	759
2019	346
2020	957
2021	387
2022	1,334
2023	693
2024	1,142
2025	367

Download the Data

Data for records on 2003-10-18: 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 2026-10-16 (16 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 10	764
10 to 20	12
20 to 30	5
30 to 40	0
40 to 50	1
50 to 60	2