Weather Records on 18 October 1997

1,240 weather records were set or tied worldwide on 18 October 1997. Highest significance: Mombasa, KE.

Key Facts for 18 October 1997

On 18 October 1997, 1,240 weather records were set or tied at long-record stations worldwide.
429 were record highs and 620 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 84 monthly and 1,153 daily.
Mombasa set an all-time record daily precipitation of 221.5 mm (8.7 in) on 18 October 1997.
Across 167 earlier years (1794 to 2025) the same calendar date averaged 429 records.

Record Map

1,240 stations

1,240 station records on 18 October 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 October 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mombasa	Kenya	Record daily precipitation	221.5 mm (8.7 in)	66 of 100 (Major)
Itainopolis	Brazil	Record daily precipitation	80.0 mm (3.1 in)	52 of 100 (Notable)
Itajuipe (Piranji)	Brazil	Record daily precipitation	58.1 mm (2.3 in)	50 of 100 (Notable)
Kodiak AP	United States	Record daily precipitation	82.6 mm (3.3 in)	50 of 100 (Notable)
Lagoa Grande	Brazil	Record daily precipitation	36.2 mm (1.4 in)	49 of 100 (Notable)
Vivero la Paz	Mexico	Record low maximum temperature	15.0 C (59.0 F)	49 of 100 (Notable)
Mutuipe	Brazil	Record daily precipitation	48.7 mm (1.9 in)	47 of 100 (Notable)
Mukdahan	Thailand	Record daily precipitation	70.1 mm (2.8 in)	46 of 100 (Notable)
Glenn Dale Bell STN	United States	Record daily precipitation	55.6 mm (2.2 in)	46 of 100 (Notable)
Palpan	Mexico	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Armagh	United Kingdom	Record high maximum temperature	19.7 C (67.5 F)	43 of 100 (Notable)
Waynesboro 2 S	United States	Record low maximum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Buckingham	United States	Record daily precipitation	49.5 mm (1.9 in)	43 of 100 (Notable)
Arhangelsk	Russia	Record low minimum temperature	-16.7 C (1.9 F)	42 of 100 (Notable)
Ocozocoautla	Mexico	Record low minimum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Ixtlahuaca (Smn)	Mexico	Record low minimum temperature	-2.2 C (28.0 F)	40 of 100 (Notable)
Santa Cruz Do Piaui	Brazil	Record daily precipitation	71.3 mm (2.8 in)	38 of 100 (Notable)
Quitman 2 NW	United States	Record low maximum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Valentia Observatory	Ireland	Record high maximum temperature	21.2 C (70.2 F)	37 of 100 (Notable)
Zacapoaxtla (Smn)	Mexico	Record low minimum temperature	0.0 C (32.0 F)	37 of 100 (Notable)
Cet Central England	United Kingdom	Record high maximum temperature	20.3 C (68.5 F)	37 of 100 (Notable)
Wisley	United Kingdom	Record high maximum temperature	22.1 C (71.8 F)	37 of 100 (Notable)
Turtle Lake	United States	Record high maximum temperature	30.0 C (86.0 F)	37 of 100 (Notable)
Actopan	Mexico	Record low minimum temperature	10.6 C (51.1 F)	35 of 100 (Notable)
Rothamsted	United Kingdom	Record high maximum temperature	20.7 C (69.3 F)	35 of 100 (Notable)
Pte de Chassiron	France	Record high maximum temperature	25.8 C (78.4 F)	34 of 100 (Routine)
Presa Parral	Mexico	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Oxthoc	Mexico	Record low minimum temperature	-3.3 C (26.1 F)	34 of 100 (Routine)
Jayuya	Puerto Rico [United States]	Record daily precipitation	51.6 mm (2.0 in)	34 of 100 (Routine)
Oxford	United Kingdom	Record high maximum temperature	21.2 C (70.2 F)	34 of 100 (Routine)
Laurens	United States	Record low maximum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Fazenda Sao Bento	Brazil	Record daily precipitation	66.0 mm (2.6 in)	33 of 100 (Routine)
Calderones	Mexico	Record low minimum temperature	3.3 C (37.9 F)	33 of 100 (Routine)
Santa Fe	Mexico	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Roi Et	Thailand	Record daily precipitation	56.9 mm (2.2 in)	33 of 100 (Routine)
Amidon	United States	Record high maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Franca	Brazil	Record daily precipitation	34.2 mm (1.3 in)	32 of 100 (Routine)
Aktobe	Kazakhstan	Record high maximum temperature	26.4 C (79.5 F)	32 of 100 (Routine)
Rio Grande (Smn)	Mexico	Record low minimum temperature	0.0 C (32.0 F)	32 of 100 (Routine)
Lugo/Rozas	Spain	Record daily precipitation	38.4 mm (1.5 in)	32 of 100 (Routine)
Washington 2 ESE	United States	Record low maximum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Monroe 2 SE	United States	Record low maximum temperature	12.2 C (54.0 F)	32 of 100 (Routine)
Bowbells	United States	Record high maximum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Woodstock 2 NE	United States	Record low maximum temperature	9.4 C (48.9 F)	32 of 100 (Routine)
Akita	Japan	Record daily precipitation	42.9 mm (1.7 in)	31 of 100 (Routine)
Kustanai	Kazakhstan	Record high maximum temperature	24.6 C (76.3 F)	31 of 100 (Routine)
Atbasar	Kazakhstan	Record high maximum temperature	23.1 C (73.6 F)	31 of 100 (Routine)
El Pino	Mexico	Record low minimum temperature	-2.2 C (28.0 F)	31 of 100 (Routine)
La Cua	Mexico	Record low minimum temperature	1.7 C (35.1 F)	31 of 100 (Routine)
Polotitlan	Mexico	Record low minimum temperature	-2.2 C (28.0 F)	31 of 100 (Routine)
El Salto (Cfe)	Mexico	Record low minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Sombrerete (Dge)	Mexico	Record low minimum temperature	3.9 C (39.0 F)	31 of 100 (Routine)
El Carmen (Smn)	Mexico	Record low maximum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
Presa Requena	Mexico	Record low minimum temperature	-1.1 C (30.0 F)	30 of 100 (Routine)
Peamiller (Smn)	Mexico	Record low minimum temperature	3.9 C (39.0 F)	30 of 100 (Routine)
Brunswick	United States	Record low maximum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Folkston 9 SW	United States	Record low maximum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Ft Assiniboine	United States	Record high maximum temperature	26.7 C (80.1 F)	30 of 100 (Routine)
Dickinson Exp STN	United States	Record high maximum temperature	27.2 C (81.0 F)	30 of 100 (Routine)
Semej	Kazakhstan	Record high maximum temperature	23.3 C (73.9 F)	29 of 100 (Routine)

Counts by Type and Timescale

1,240 records

Records set or tied on 18 October 1997 by type: Highest daily maximum 273, Lowest daily maximum 201, Highest daily minimum 156, Lowest daily minimum 419, Heaviest daily rainfall 188, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 18 October 1997 by type
Record type	Records
Highest daily maximum	273
Lowest daily maximum	201
Highest daily minimum	156
Lowest daily minimum	419
Heaviest daily rainfall	188
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 18 October 1997 by timescale: all-time 3, monthly 84, daily 1,153.

How Much Records Were Beaten By

1,002 broken records

Margins by which the 1,002 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.0. Ties are not counted.

Top 20 by Significance

18 October 1997

Top 20 records on 18 October 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 October 1997	Mombasa, KE	all-time rain	221.5 mm (8.7 in)	54.9 mm (2.2 in)	25 years	66 of 100 (Major)
18 October 1997	Itainopolis, BR	daily rain	80.0 mm (3.1 in)	68.5 mm (2.7 in)	31 years	52 of 100 (Notable)
18 October 1997	Itajuipe (Piranji), BR	daily rain	58.1 mm (2.3 in)	41.1 mm (1.6 in)	36 years	50 of 100 (Notable)
18 October 1997	Kodiak AP, US	daily rain	82.6 mm (3.3 in)	60.2 mm (2.4 in)	20 years	50 of 100 (Notable)
18 October 1997	Lagoa Grande, BR	daily rain	36.2 mm (1.4 in)	36.2 mm (1.4 in)	35 years	49 of 100 (Notable)
18 October 1997	Vivero la Paz, MX	daily low max	15.0 C (59.0 F)	7.8 C (14.0 F)	20 years	49 of 100 (Notable)
18 October 1997	Mutuipe, BR	daily rain	48.7 mm (1.9 in)	39.5 mm (1.6 in)	15 years	47 of 100 (Notable)
18 October 1997	Mukdahan, TH	daily rain	70.1 mm (2.8 in)	60.2 mm (2.4 in)	8 years	46 of 100 (Notable)
18 October 1997	Glenn Dale Bell STN, US	daily rain	55.6 mm (2.2 in)	29.9 mm (1.2 in)	64 years	46 of 100 (Notable)
18 October 1997	Palpan, MX	daily high min	20.0 C (68.0 F)	3.3 C (5.9 F)	67 years	43 of 100 (Notable)
18 October 1997	Armagh, GB	daily high max	19.7 C (67.5 F)	1.1 C (2.0 F)	97 years	43 of 100 (Notable)
18 October 1997	Waynesboro 2 S, US	daily low max	14.4 C (57.9 F)	2.3 C (4.1 F)	94 years	43 of 100 (Notable)
18 October 1997	Buckingham, US	daily rain	49.5 mm (1.9 in)	7.8 mm (0.31 in)	98 years	43 of 100 (Notable)
18 October 1997	Arhangelsk, RU	daily low min	-16.7 C (1.9 F)	6.7 C (12.1 F)	62 years	42 of 100 (Notable)
18 October 1997	Ocozocoautla, MX	daily low min	8.9 C (48.0 F)	4.4 C (7.9 F)	54 years	41 of 100 (Notable)
18 October 1997	Ixtlahuaca (Smn), MX	daily low min	-2.2 C (28.0 F)	3.9 C (7.0 F)	70 years	40 of 100 (Notable)
18 October 1997	Santa Cruz Do Piaui, BR	monthly rain	71.3 mm (2.8 in)	21.9 mm (0.9 in)	23 years	38 of 100 (Notable)
18 October 1997	Quitman 2 NW, US	daily low max	21.7 C (71.1 F)	0.5 C (0.9 F)	91 years	38 of 100 (Notable)
18 October 1997	Valentia Observatory, IE	daily high max	21.2 C (70.2 F)	4.0 C (7.2 F)	43 years	37 of 100 (Notable)
18 October 1997	Zacapoaxtla (Smn), MX	monthly low min	0.0 C (32.0 F)	1.7 C (3.1 F)	52 years	37 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 1997

Records set or tied on this calendar date in each year from 1794 to 1997. 1997 had 1,240 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 1997-10-18: 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 2026-10-17 (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	983
20 to 40	13
40 to 60	2
60 to 80	3
80 to 100	0
100 to 120	1