Weather Records on 21 September 1989

1,002 weather records were set or tied worldwide on 21 September 1989. Highest significance: Dwtn Charleston, US.

Key Facts for 21 September 1989

On 21 September 1989, 1,002 weather records were set or tied at long-record stations worldwide.
627 were record highs and 130 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 28 monthly and 973 daily.
Dwtn Charleston set a daily record precipitation of 152.1 mm (6.0 in) on 21 September 1989.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 447 records.

Record Map

1,002 stations

1,002 station records on 21 September 1989 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1989: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dwtn Charleston	United States	Record daily precipitation	152.1 mm (6.0 in)	73 of 100 (Major)
Cottonwood 2 E	United States	Record daily precipitation	54.6 mm (2.1 in)	67 of 100 (Major)
Faulkton	United States	Record daily precipitation	53.6 mm (2.1 in)	59 of 100 (Notable)
Pokegama Dam	United States	Record daily precipitation	53.8 mm (2.1 in)	58 of 100 (Notable)
Campbell	United States	Record daily precipitation	61.5 mm (2.4 in)	57 of 100 (Notable)
Gettysburg	United States	Record daily precipitation	44.5 mm (1.8 in)	56 of 100 (Notable)
Milesville 5 NE	United States	Record daily precipitation	41.1 mm (1.6 in)	56 of 100 (Notable)
Interior 3 NE	United States	Record daily precipitation	51.3 mm (2.0 in)	54 of 100 (Notable)
Victor 4 N	United States	Record daily precipitation	55.9 mm (2.2 in)	54 of 100 (Notable)
Savannah Intl AP	United States	Record daily precipitation	143.8 mm (5.7 in)	54 of 100 (Notable)
Mixquiahuala (Smn)	Mexico	Record daily precipitation	91.4 mm (3.6 in)	52 of 100 (Notable)
Mellette 4 W	United States	Record daily precipitation	53.8 mm (2.1 in)	51 of 100 (Notable)
Pactola Dam	United States	Record daily precipitation	48.0 mm (1.9 in)	50 of 100 (Notable)
Waubay Natl Wild Life	United States	Record daily precipitation	56.1 mm (2.2 in)	50 of 100 (Notable)
Hampton 1S	United States	Record daily precipitation	80.3 mm (3.2 in)	49 of 100 (Notable)
Cedar Butte	United States	Record daily precipitation	34.3 mm (1.4 in)	49 of 100 (Notable)
Hilland 2 NW	United States	Record daily precipitation	37.6 mm (1.5 in)	49 of 100 (Notable)
Salgado	Brazil	Record daily precipitation	49.8 mm (2.0 in)	48 of 100 (Notable)
Hartwell	United States	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Hay Springs 12 S	United States	Record daily precipitation	37.3 mm (1.5 in)	47 of 100 (Notable)
Sussex 1 NW	United States	Record daily precipitation	62.0 mm (2.4 in)	47 of 100 (Notable)
Yemassee 1 N	United States	Record daily precipitation	66.0 mm (2.6 in)	47 of 100 (Notable)
Charleston Intl AP	United States	Record daily precipitation	122.9 mm (4.8 in)	46 of 100 (Notable)
Beaufort MCAS	United States	Record daily precipitation	123.2 mm (4.9 in)	46 of 100 (Notable)
Mission 14 S	United States	Record daily precipitation	47.0 mm (1.9 in)	45 of 100 (Notable)
Wilmot	United States	Record daily precipitation	66.0 mm (2.6 in)	45 of 100 (Notable)
Shamakhy	Azerbaijan	Record daily precipitation	47.5 mm (1.9 in)	44 of 100 (Notable)
Ankenes	Norway	Record daily precipitation	28.3 mm (1.1 in)	44 of 100 (Notable)
Harnosand	Sweden	Record high maximum temperature	21.6 C (70.9 F)	44 of 100 (Notable)
Grand Rapids Forestry Lab	United States	Record daily precipitation	50.3 mm (2.0 in)	44 of 100 (Notable)
Sisseton	United States	Record daily precipitation	46.5 mm (1.8 in)	44 of 100 (Notable)
Kwajalein	Marshall Islands	Record daily precipitation	109.5 mm (4.3 in)	43 of 100 (Notable)
Ft Ripley	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Ridgeland 5 NE	United States	Record daily precipitation	80.3 mm (3.2 in)	43 of 100 (Notable)
Gordon 6N	United States	Record daily precipitation	28.7 mm (1.1 in)	42 of 100 (Notable)
Boonton 1 SE	United States	Record daily precipitation	58.7 mm (2.3 in)	42 of 100 (Notable)
Hankinson	United States	Record daily precipitation	50.3 mm (2.0 in)	42 of 100 (Notable)
Walterboro 1 SW	United States	Record daily precipitation	45.7 mm (1.8 in)	42 of 100 (Notable)
Highmore	United States	Record daily precipitation	48.3 mm (1.9 in)	42 of 100 (Notable)
Kennebec	United States	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Spearfish	United States	Record daily precipitation	41.1 mm (1.6 in)	42 of 100 (Notable)
Stephan 2 NW	United States	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Sparta	United States	Record daily precipitation	88.9 mm (3.5 in)	41 of 100 (Notable)
Brainerd	United States	Record daily precipitation	46.0 mm (1.8 in)	41 of 100 (Notable)
Fergus Falls	United States	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Hightstown 2 W	United States	Record high minimum temperature	22.2 C (72.0 F)	41 of 100 (Notable)
Midland	United States	Record daily precipitation	37.3 mm (1.5 in)	41 of 100 (Notable)
Coloso	Puerto Rico [United States]	Record daily precipitation	93.5 mm (3.7 in)	40 of 100 (Notable)
Aitkin 2E	United States	Record daily precipitation	46.5 mm (1.8 in)	40 of 100 (Notable)
Little Falls	United States	Record daily precipitation	68.1 mm (2.7 in)	40 of 100 (Notable)
Wahpeton 3 N	United States	Record daily precipitation	47.2 mm (1.9 in)	40 of 100 (Notable)
Suolovuopmi	Norway	Record daily precipitation	26.3 mm (1.0 in)	39 of 100 (Notable)
Leech Lake	United States	Record daily precipitation	49.0 mm (1.9 in)	39 of 100 (Notable)
Blunt	United States	Record daily precipitation	65.3 mm (2.6 in)	39 of 100 (Notable)
Augusta Bush Fld AP	United States	Record daily precipitation	60.7 mm (2.4 in)	39 of 100 (Notable)
Philip AP	United States	Record daily precipitation	52.8 mm (2.1 in)	39 of 100 (Notable)
Tecolutla	Mexico	Record low minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Yuma	United States	Record daily precipitation	33.8 mm (1.3 in)	38 of 100 (Notable)
Newark Ag Farm	United States	Record high minimum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Wadena 3 S	United States	Record daily precipitation	46.0 mm (1.8 in)	38 of 100 (Notable)

Counts by Type and Timescale

1,002 records

Records set or tied on 21 September 1989 by type: Highest daily maximum 306, Lowest daily maximum 75, Highest daily minimum 321, Lowest daily minimum 55, Heaviest daily rainfall 245.

Records on 21 September 1989 by type
Record type	Records
Highest daily maximum	306
Lowest daily maximum	75
Highest daily minimum	321
Lowest daily minimum	55
Heaviest daily rainfall	245
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1989 by timescale: all-time 1, monthly 28, daily 973.

How Much Records Were Beaten By

838 broken records

Margins by which the 838 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 123.9. Ties are not counted.

Top 20 by Significance

21 September 1989

Top 20 records on 21 September 1989 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1989	Dwtn Charleston, US	daily rain	152.1 mm (6.0 in)	123.9 mm (4.9 in)	80 years	73 of 100 (Major)
21 September 1989	Cottonwood 2 E, US	daily rain	54.6 mm (2.1 in)	44.4 mm (1.7 in)	64 years	67 of 100 (Major)
21 September 1989	Faulkton, US	daily rain	53.6 mm (2.1 in)	25.7 mm (1.0 in)	64 years	59 of 100 (Notable)
21 September 1989	Pokegama Dam, US	daily rain	53.8 mm (2.1 in)	26.1 mm (1.0 in)	87 years	58 of 100 (Notable)
21 September 1989	Campbell, US	daily rain	61.5 mm (2.4 in)	22.9 mm (0.9 in)	83 years	57 of 100 (Notable)
21 September 1989	Gettysburg, US	daily rain	44.5 mm (1.8 in)	28.5 mm (1.1 in)	48 years	56 of 100 (Notable)
21 September 1989	Milesville 5 NE, US	daily rain	41.1 mm (1.6 in)	35.3 mm (1.4 in)	39 years	56 of 100 (Notable)
21 September 1989	Interior 3 NE, US	daily rain	51.3 mm (2.0 in)	39.6 mm (1.6 in)	34 years	54 of 100 (Notable)
21 September 1989	Victor 4 N, US	daily rain	55.9 mm (2.2 in)	28.5 mm (1.1 in)	64 years	54 of 100 (Notable)
21 September 1989	Savannah Intl AP, US	daily rain	143.8 mm (5.7 in)	109.5 mm (4.3 in)	36 years	54 of 100 (Notable)
21 September 1989	Mixquiahuala (Smn), MX	daily rain	91.4 mm (3.6 in)	78.4 mm (3.1 in)	31 years	52 of 100 (Notable)
21 September 1989	Mellette 4 W, US	daily rain	53.8 mm (2.1 in)	25.1 mm (1.0 in)	64 years	51 of 100 (Notable)
21 September 1989	Pactola Dam, US	daily rain	48.0 mm (1.9 in)	40.9 mm (1.6 in)	26 years	50 of 100 (Notable)
21 September 1989	Waubay Natl Wild Life, US	daily rain	56.1 mm (2.2 in)	36.5 mm (1.4 in)	24 years	50 of 100 (Notable)
21 September 1989	Hampton 1S, US	daily rain	80.3 mm (3.2 in)	67.6 mm (2.7 in)	36 years	49 of 100 (Notable)
21 September 1989	Cedar Butte, US	daily rain	34.3 mm (1.4 in)	25.4 mm (1.0 in)	24 years	49 of 100 (Notable)
21 September 1989	Hilland 2 NW, US	daily rain	37.6 mm (1.5 in)	26.4 mm (1.0 in)	34 years	49 of 100 (Notable)
21 September 1989	Salgado, BR	daily rain	49.8 mm (2.0 in)	31.6 mm (1.2 in)	31 years	48 of 100 (Notable)
21 September 1989	Hartwell, US	daily rain	76.2 mm (3.0 in)	39.6 mm (1.6 in)	66 years	48 of 100 (Notable)
21 September 1989	Hay Springs 12 S, US	daily rain	37.3 mm (1.5 in)	24.6 mm (1.0 in)	26 years	47 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 1989

Records set or tied on this calendar date in each year from 1805 to 1989. 1989 had 1,002 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 1989-09-21: 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 2026-10-14 (14 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 20	777
20 to 40	46
40 to 60	8
60 to 80	3
80 to 100	0
100 to 120	3
120 to 140	1