Weather Records on 18 September 1998

1,038 weather records were set or tied worldwide on 18 September 1998. Highest significance: Suchixtlahuaca -Quiotep-, MX.

Key Facts for 18 September 1998

On 18 September 1998, 1,038 weather records were set or tied at long-record stations worldwide.
736 were record highs and 136 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 24 monthly and 1,013 daily.
Suchixtlahuaca -Quiotep- set a monthly record daily precipitation of 264.9 mm (10.4 in) on 18 September 1998.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 417 records.

Record Map

1,038 stations

1,038 station records on 18 September 1998 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1998: highest significance records shown on the map
Station	Country	Type	Value	Significance
Suchixtlahuaca -Quiotep-	Mexico	Record daily precipitation	264.9 mm (10.4 in)	54 of 100 (Notable)
Presa Solis	Mexico	Record daily precipitation	62.7 mm (2.5 in)	53 of 100 (Notable)
Presa Guadalupe	Mexico	Record daily precipitation	100.8 mm (4.0 in)	49 of 100 (Notable)
Blaine	United States	Record daily precipitation	34.3 mm (1.4 in)	48 of 100 (Notable)
Science Garden	Philippines	Record daily precipitation	137.0 mm (5.4 in)	47 of 100 (Notable)
Santa Julia	Mexico	Record daily precipitation	64.3 mm (2.5 in)	44 of 100 (Notable)
Libres (Smn)	Mexico	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Yerevan	Armenia	Record high minimum temperature	19.2 C (66.6 F)	43 of 100 (Notable)
Vanegas	Mexico	Record daily precipitation	34.8 mm (1.4 in)	43 of 100 (Notable)
Gibbonsville	United States	Record high minimum temperature	8.9 C (48.0 F)	43 of 100 (Notable)
Palenque (Dge)	Mexico	Record daily precipitation	126.0 mm (5.0 in)	42 of 100 (Notable)
Guaiba Country Club	Brazil	Record daily precipitation	70.3 mm (2.8 in)	41 of 100 (Notable)
Maquixco	Mexico	Record daily precipitation	39.9 mm (1.6 in)	41 of 100 (Notable)
Red Lake Indian Agcy	United States	Record high maximum temperature	28.9 C (84.0 F)	41 of 100 (Notable)
Bozeman Montana State UNIV	United States	Record high minimum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Atemajac de Brizuela	Mexico	Record daily precipitation	41.9 mm (1.6 in)	40 of 100 (Notable)
Grace	United States	Record high minimum temperature	14.4 C (57.9 F)	40 of 100 (Notable)
Ft Benton	United States	Record high minimum temperature	13.3 C (55.9 F)	40 of 100 (Notable)
Libby 1 NE Rs	United States	Record high minimum temperature	13.3 C (55.9 F)	40 of 100 (Notable)
Huixtla	Mexico	Record low minimum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Detroit Lakes 1 NNE	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Ft Meade	United States	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
San Miguel Ejutla	Mexico	Record high maximum temperature	35.0 C (95.0 F)	38 of 100 (Notable)
Naples	United States	Record low maximum temperature	26.7 C (80.1 F)	38 of 100 (Notable)
Weiser	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Sundance	United States	Record high maximum temperature	35.6 C (96.1 F)	38 of 100 (Notable)
Moron de la Frontera	Spain	Record daily precipitation	43.3 mm (1.7 in)	37 of 100 (Notable)
Grand Rapids Forestry Lab	United States	Record high maximum temperature	30.6 C (87.1 F)	37 of 100 (Notable)
San Jeronimito	Mexico	Record daily precipitation	104.9 mm (4.1 in)	36 of 100 (Notable)
Bely Island	Russia	Record low minimum temperature	-10.2 C (13.6 F)	36 of 100 (Notable)
Monroe	United States	Record high minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Hayward Rs	United States	Record high maximum temperature	30.0 C (86.0 F)	36 of 100 (Notable)
Matehuala (Smn)	Mexico	Record daily precipitation	58.9 mm (2.3 in)	35 of 100 (Notable)
Malvern	United States	Record high minimum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Crescent City	United States	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Arco	United States	Record high minimum temperature	13.3 C (55.9 F)	35 of 100 (Notable)
Grand View 4 NW	United States	Record high minimum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Jerome	United States	Record high minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Jordan	United States	Record high minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Red Lodge	United States	Record high minimum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Green Rvr	United States	Record high maximum temperature	32.2 C (90.0 F)	35 of 100 (Notable)
Scottsbluff W B Heilig Fld AP	United States	Record high maximum temperature	35.0 C (95.0 F)	35 of 100 (Notable)
El Sabino	Mexico	Record daily precipitation	57.9 mm (2.3 in)	34 of 100 (Routine)
Arrowrock Dam	United States	Record high minimum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Opheim 12 SSE	United States	Record high minimum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Mc Leod 3 E	United States	Record high maximum temperature	33.3 C (91.9 F)	34 of 100 (Routine)
Rio Grande City	United States	Record daily precipitation	25.7 mm (1.0 in)	34 of 100 (Routine)
Oak City	United States	Record high minimum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Ogden Sugar Factory	United States	Record high minimum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Quitupan	Mexico	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
San Diego Curupatzeo	Mexico	Record high maximum temperature	37.8 C (100.0 F)	33 of 100 (Routine)
Tlaxco	Mexico	Record daily precipitation	32.5 mm (1.3 in)	33 of 100 (Routine)
Sidney	United States	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
Valentine	United States	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Milesville 5 NE	United States	Record high maximum temperature	38.9 C (102.0 F)	33 of 100 (Routine)
Tooele	United States	Record high minimum temperature	20.6 C (69.1 F)	32 of 100 (Routine)
Tremonton	United States	Record high minimum temperature	16.7 C (62.1 F)	32 of 100 (Routine)
Tarimoro	Mexico	Record daily precipitation	42.9 mm (1.7 in)	31 of 100 (Routine)
Tepuxtepec	Mexico	Record daily precipitation	54.9 mm (2.2 in)	31 of 100 (Routine)
Cambridge	United States	Record high minimum temperature	13.9 C (57.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

1,038 records

Records set or tied on 18 September 1998 by type: Highest daily maximum 294, Lowest daily maximum 80, Highest daily minimum 442, Lowest daily minimum 56, Heaviest daily rainfall 163, Deepest snow cover 3.

Records on 18 September 1998 by type
Record type	Records
Highest daily maximum	294
Lowest daily maximum	80
Highest daily minimum	442
Lowest daily minimum	56
Heaviest daily rainfall	163
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 18 September 1998 by timescale: all-time 1, monthly 24, daily 1,013.

How Much Records Were Beaten By

719 broken records

Margins by which the 719 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 250.0. Ties are not counted.

Top 20 by Significance

18 September 1998

Top 20 records on 18 September 1998 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1998	Suchixtlahuaca -Quiotep-, MX	monthly rain	264.9 mm (10.4 in)	65.0 mm (2.6 in)	0 years	54 of 100 (Notable)
18 September 1998	Presa Solis, MX	daily rain	62.7 mm (2.5 in)	41.1 mm (1.6 in)	33 years	53 of 100 (Notable)
18 September 1998	Presa Guadalupe, MX	all-time rain	100.8 mm (4.0 in)	22.1 mm (0.9 in)	12 years	49 of 100 (Notable)
18 September 1998	Blaine, US	daily rain	34.3 mm (1.4 in)	10.7 mm (0.4 in)	84 years	48 of 100 (Notable)
18 September 1998	Science Garden, PH	daily rain	137.0 mm (5.4 in)	95.0 mm (3.7 in)	32 years	47 of 100 (Notable)
18 September 1998	Santa Julia, MX	daily rain	64.3 mm (2.5 in)	39.9 mm (1.6 in)	32 years	44 of 100 (Notable)
18 September 1998	Libres (Smn), MX	daily rain	41.9 mm (1.6 in)	19.0 mm (0.7 in)	65 years	44 of 100 (Notable)
18 September 1998	Yerevan, AM	daily high min	19.2 C (66.6 F)	2.5 C (4.5 F)	85 years	43 of 100 (Notable)
18 September 1998	Vanegas, MX	daily rain	34.8 mm (1.4 in)	26.9 mm (1.1 in)	28 years	43 of 100 (Notable)
18 September 1998	Gibbonsville, US	daily high min	8.9 C (48.0 F)	1.1 C (2.0 F)	102 years	43 of 100 (Notable)
18 September 1998	Palenque (Dge), MX	daily rain	126.0 mm (5.0 in)	73.9 mm (2.9 in)	29 years	42 of 100 (Notable)
18 September 1998	Guaiba Country Club, BR	daily rain	70.3 mm (2.8 in)	45.3 mm (1.8 in)	31 years	41 of 100 (Notable)
18 September 1998	Maquixco, MX	daily rain	39.9 mm (1.6 in)	27.5 mm (1.1 in)	20 years	41 of 100 (Notable)
18 September 1998	Red Lake Indian Agcy, US	daily high max	28.9 C (84.0 F)	0.6 C (1.1 F)	102 years	41 of 100 (Notable)
18 September 1998	Bozeman Montana State UNIV, US	daily high min	12.8 C (55.0 F)	0.6 C (1.1 F)	105 years	41 of 100 (Notable)
18 September 1998	Atemajac de Brizuela, MX	daily rain	41.9 mm (1.6 in)	18.0 mm (0.7 in)	52 years	40 of 100 (Notable)
18 September 1998	Grace, US	daily high min	14.4 C (57.9 F)	3.3 C (5.9 F)	77 years	40 of 100 (Notable)
18 September 1998	Ft Benton, US	daily high min	13.3 C (55.9 F)	1.6 C (2.9 F)	92 years	40 of 100 (Notable)
18 September 1998	Libby 1 NE Rs, US	daily high min	13.3 C (55.9 F)	2.2 C (4.0 F)	84 years	40 of 100 (Notable)
18 September 1998	Huixtla, MX	daily low min	17.8 C (64.0 F)	2.8 C (5.0 F)	28 years	39 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 1998

Records set or tied on this calendar date in each year from 1803 to 1998. 1998 had 1,038 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 1998-09-18: 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 50	711
50 to 100	7
100 to 150	0
150 to 200	0
200 to 250	1