Weather Records on 21 September 1998

1,481 weather records were set or tied worldwide on 21 September 1998. Highest significance: Wanaaring Post Office, AU.

Key Facts for 21 September 1998

On 21 September 1998, 1,481 weather records were set or tied at long-record stations worldwide.
936 were record highs and 177 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 51 monthly and 1,426 daily.
Wanaaring Post Office set a daily record precipitation of 40.6 mm (1.6 in) on 21 September 1998.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 444 records.

Record Map

1,481 stations

1,481 station records on 21 September 1998 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1998: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wanaaring Post Office	Australia	Record daily precipitation	40.6 mm (1.6 in)	76 of 100 (Major)
Montevallo	United States	Record daily precipitation	152.9 mm (6.0 in)	76 of 100 (Major)
Yantabulla Station	Australia	Record daily precipitation	35.0 mm (1.4 in)	73 of 100 (Major)
Boorara	Australia	Record daily precipitation	33.0 mm (1.3 in)	70 of 100 (Major)
Guayabal	Puerto Rico [United States]	Record daily precipitation	372.1 mm (14.6 in)	70 of 100 (Major)
Honokaa Town 215	United States	Record daily precipitation	122.9 mm (4.8 in)	68 of 100 (Major)
Calera	United States	Record daily precipitation	172.7 mm (6.8 in)	65 of 100 (Major)
Bulloo Downs	Australia	Record daily precipitation	46.0 mm (1.8 in)	62 of 100 (Major)
Fords Bridge	Australia	Record daily precipitation	32.0 mm (1.3 in)	57 of 100 (Notable)
Deeth	United States	Record daily precipitation	34.8 mm (1.4 in)	56 of 100 (Notable)
Cobar (Double Gates)	Australia	Record daily precipitation	29.4 mm (1.2 in)	53 of 100 (Notable)
Kaumana 88.1	United States	Record daily precipitation	90.2 mm (3.6 in)	53 of 100 (Notable)
Pogranichnyj	Russia	Record daily precipitation	48.1 mm (1.9 in)	52 of 100 (Notable)
Flying Fish Point	Australia	Record daily precipitation	46.0 mm (1.8 in)	51 of 100 (Notable)
New Raymer	United States	Record daily precipitation	55.6 mm (2.2 in)	50 of 100 (Notable)
Custer	United States	Record daily precipitation	30.5 mm (1.2 in)	50 of 100 (Notable)
Fords Bridge (Delta)	Australia	Record daily precipitation	30.0 mm (1.2 in)	49 of 100 (Notable)
Armagh	United Kingdom	Record high maximum temperature	23.3 C (73.9 F)	49 of 100 (Notable)
Santa Isabel 2 ENE	Puerto Rico [United States]	Record daily precipitation	247.7 mm (9.8 in)	48 of 100 (Notable)
San Juan L M Marin Intl AP	Puerto Rico [United States]	Record daily precipitation	102.6 mm (4.0 in)	48 of 100 (Notable)
Wanaaring (Kendabooka)	Australia	Record daily precipitation	39.2 mm (1.5 in)	47 of 100 (Notable)
Turnu Magurele	Romania	Record daily precipitation	43.8 mm (1.7 in)	47 of 100 (Notable)
Ust-Isim	Russia	Record daily precipitation	33.0 mm (1.3 in)	47 of 100 (Notable)
Wanaaring (Owen Downs)	Australia	Record daily precipitation	35.0 mm (1.4 in)	46 of 100 (Notable)
Timiryazevskij	Russia	Record daily precipitation	41.6 mm (1.6 in)	46 of 100 (Notable)
Santuck	United States	Record daily precipitation	45.2 mm (1.8 in)	46 of 100 (Notable)
Charleston Intl AP	United States	Record daily precipitation	267.2 mm (10.5 in)	46 of 100 (Notable)
W Blocton	United States	Record daily precipitation	254.0 mm (10.0 in)	45 of 100 (Notable)
Topaz Towalla Rd	Australia	Record daily precipitation	72.0 mm (2.8 in)	43 of 100 (Notable)
Suifenhe	China	Record daily precipitation	43.3 mm (1.7 in)	43 of 100 (Notable)
Magueyes Is	Puerto Rico [United States]	Record daily precipitation	127.0 mm (5.0 in)	43 of 100 (Notable)
Chumphon	Thailand	Record daily precipitation	78.0 mm (3.1 in)	43 of 100 (Notable)
Lillis	United States	Record daily precipitation	95.8 mm (3.8 in)	43 of 100 (Notable)
Bogalusa	United States	Record daily precipitation	98.0 mm (3.9 in)	43 of 100 (Notable)
Paauilo 221	United States	Record daily precipitation	95.5 mm (3.8 in)	43 of 100 (Notable)
Roosevelt Roads	Puerto Rico [United States]	Record daily precipitation	89.4 mm (3.5 in)	42 of 100 (Notable)
Thora Post Office	Australia	Record daily precipitation	69.0 mm (2.7 in)	41 of 100 (Notable)
Carrathool (Uardry)	Australia	Record daily precipitation	28.0 mm (1.1 in)	41 of 100 (Notable)
Zyrjanka	Russia	Record daily precipitation	27.1 mm (1.1 in)	41 of 100 (Notable)
Union Springs 9 S	United States	Record daily precipitation	63.5 mm (2.5 in)	41 of 100 (Notable)
Surrency	United States	Record daily precipitation	108.0 mm (4.3 in)	41 of 100 (Notable)
Dorset	United States	Record daily precipitation	53.3 mm (2.1 in)	41 of 100 (Notable)
Linden Wtp	United States	Record daily precipitation	74.7 mm (2.9 in)	41 of 100 (Notable)
Elkhorn	United States	Record high maximum temperature	30.0 C (86.0 F)	41 of 100 (Notable)
Happy Valley	Australia	Record daily precipitation	89.0 mm (3.5 in)	40 of 100 (Notable)
Wanaaring (Borrona Downs)	Australia	Record daily precipitation	25.2 mm (1.0 in)	40 of 100 (Notable)
Mudanjiang	China	Record daily precipitation	35.6 mm (1.4 in)	40 of 100 (Notable)
Bones I Bardu	Norway	Record daily precipitation	33.5 mm (1.3 in)	40 of 100 (Notable)
Bol'sie-Uki	Russia	Record daily precipitation	35.1 mm (1.4 in)	40 of 100 (Notable)
Bartow 1SE	United States	Record daily precipitation	42.2 mm (1.7 in)	40 of 100 (Notable)
Dwtn Charleston	United States	Record daily precipitation	215.9 mm (8.5 in)	40 of 100 (Notable)
Clayton 1 SSW	United States	Record high minimum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Danville	United States	Record daily precipitation	44.7 mm (1.8 in)	39 of 100 (Notable)
Waynesboro 2 W	United States	Record daily precipitation	56.6 mm (2.2 in)	39 of 100 (Notable)
South Johnstone Exp STN	Australia	Record daily precipitation	50.0 mm (2.0 in)	38 of 100 (Notable)
New Delhi/Safdarjun	India	Record daily precipitation	103.9 mm (4.1 in)	38 of 100 (Notable)
Winthrop UNIV	United States	Record daily precipitation	54.6 mm (2.1 in)	38 of 100 (Notable)
Jaisalmer	India	Record daily precipitation	62.0 mm (2.4 in)	37 of 100 (Notable)
Lake Alfred Exp STN	United States	Record daily precipitation	81.3 mm (3.2 in)	37 of 100 (Notable)
Buffalo Gap	United States	Record daily precipitation	50.3 mm (2.0 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,481 records

Records set or tied on 21 September 1998 by type: Highest daily maximum 311, Lowest daily maximum 112, Highest daily minimum 625, Lowest daily minimum 65, Heaviest daily rainfall 365, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 21 September 1998 by type
Record type	Records
Highest daily maximum	311
Lowest daily maximum	112
Highest daily minimum	625
Lowest daily minimum	65
Heaviest daily rainfall	365
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 21 September 1998 by timescale: all-time 4, monthly 51, daily 1,426.

How Much Records Were Beaten By

1,083 broken records

Margins by which the 1,083 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

21 September 1998

Top 20 records on 21 September 1998 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1998	Wanaaring Post Office, AU	daily rain	40.6 mm (1.6 in)	27.6 mm (1.1 in)	107 years	76 of 100 (Major)
21 September 1998	Montevallo, US	monthly rain	152.9 mm (6.0 in)	64.8 mm (2.6 in)	55 years	76 of 100 (Major)
21 September 1998	Yantabulla Station, AU	daily rain	35.0 mm (1.4 in)	31.2 mm (1.2 in)	87 years	73 of 100 (Major)
21 September 1998	Boorara, AU	daily rain	33.0 mm (1.3 in)	21.6 mm (0.9 in)	107 years	70 of 100 (Major)
21 September 1998	Guayabal, PR	all-time rain	372.1 mm (14.6 in)	168.9 mm (6.6 in)	23 years	70 of 100 (Major)
21 September 1998	Honokaa Town 215, US	daily rain	122.9 mm (4.8 in)	111.5 mm (4.4 in)	68 years	68 of 100 (Major)
21 September 1998	Calera, US	daily rain	172.7 mm (6.8 in)	128.2 mm (5.0 in)	55 years	65 of 100 (Major)
21 September 1998	Bulloo Downs, AU	daily rain	46.0 mm (1.8 in)	38.4 mm (1.5 in)	48 years	62 of 100 (Major)
21 September 1998	Fords Bridge, AU	daily rain	32.0 mm (1.3 in)	23.1 mm (0.9 in)	57 years	57 of 100 (Notable)
21 September 1998	Deeth, US	daily rain	34.8 mm (1.4 in)	29.7 mm (1.2 in)	41 years	56 of 100 (Notable)
21 September 1998	Cobar (Double Gates), AU	daily rain	29.4 mm (1.2 in)	21.8 mm (0.9 in)	56 years	53 of 100 (Notable)
21 September 1998	Kaumana 88.1, US	daily rain	90.2 mm (3.6 in)	55.7 mm (2.2 in)	68 years	53 of 100 (Notable)
21 September 1998	Pogranichnyj, RU	daily rain	48.1 mm (1.9 in)	28.1 mm (1.1 in)	59 years	52 of 100 (Notable)
21 September 1998	Flying Fish Point, AU	daily rain	46.0 mm (1.8 in)	20.1 mm (0.8 in)	81 years	51 of 100 (Notable)
21 September 1998	New Raymer, US	daily rain	55.6 mm (2.2 in)	40.9 mm (1.6 in)	19 years	50 of 100 (Notable)
21 September 1998	Custer, US	daily rain	30.5 mm (1.2 in)	19.3 mm (0.8 in)	48 years	50 of 100 (Notable)
21 September 1998	Fords Bridge (Delta), AU	daily rain	30.0 mm (1.2 in)	21.4 mm (0.8 in)	28 years	49 of 100 (Notable)
21 September 1998	Armagh, GB	daily high max	23.3 C (73.9 F)	2.2 C (4.0 F)	127 years	49 of 100 (Notable)
21 September 1998	Santa Isabel 2 ENE, PR	daily rain	247.7 mm (9.8 in)	209.1 mm (8.2 in)	13 years	48 of 100 (Notable)
21 September 1998	San Juan L M Marin Intl AP, PR	daily rain	102.6 mm (4.0 in)	79.0 mm (3.1 in)	15 years	48 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

1805 to 1998

Records set or tied on this calendar date in each year from 1805 to 1998. 1998 had 1,481 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	588
2026	469

Download the Data

Data for records on 1998-09-21: 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 50	1,066
50 to 100	11
100 to 150	2
150 to 200	2
200 to 250	2