Weather Records on 21 August 1989

828 weather records were set or tied worldwide on 21 August 1989. Highest significance: Imbil Forestry, AU.

Key Facts for 21 August 1989

On 21 August 1989, 828 weather records were set or tied at long-record stations worldwide.
454 were record highs and 128 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 24 monthly and 802 daily.
Imbil Forestry set a daily record precipitation of 50.4 mm (2.0 in) on 21 August 1989.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 448 records.

Record Map

828 stations

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

Weather records on 21 August 1989: highest significance records shown on the map
Station	Country	Type	Value	Significance
Imbil Forestry	Australia	Record daily precipitation	50.4 mm (2.0 in)	63 of 100 (Major)
Piquerobi	Brazil	Record daily precipitation	84.1 mm (3.3 in)	58 of 100 (Notable)
Skovorodino	Russia	Record high maximum temperature	40.2 C (104.4 F)	56 of 100 (Notable)
Clearwater	United States	Record daily precipitation	66.0 mm (2.6 in)	56 of 100 (Notable)
Crohamhurst	Australia	Record daily precipitation	37.0 mm (1.5 in)	54 of 100 (Notable)
Monte Castelo	Brazil	Record daily precipitation	84.4 mm (3.3 in)	53 of 100 (Notable)
Vermillion 2 SE	United States	Record daily precipitation	52.6 mm (2.1 in)	52 of 100 (Notable)
Keahua 410	United States	Record daily precipitation	26.7 mm (1.1 in)	52 of 100 (Notable)
Miyazaki	Japan	Record daily precipitation	208.5 mm (8.2 in)	50 of 100 (Notable)
Myponga	Australia	Record daily precipitation	30.0 mm (1.2 in)	49 of 100 (Notable)
Monterey	United States	Record daily precipitation	52.1 mm (2.1 in)	49 of 100 (Notable)
Lihue WSO AP 1020.1	United States	Record daily precipitation	35.8 mm (1.4 in)	49 of 100 (Notable)
Valparaiso	Brazil	Record daily precipitation	47.7 mm (1.9 in)	48 of 100 (Notable)
Cedar Vale 5SSE	United States	Record daily precipitation	94.0 mm (3.7 in)	47 of 100 (Notable)
Ahmadabad	India	Record daily precipitation	79.5 mm (3.1 in)	45 of 100 (Notable)
Colotlan (Dge)	Mexico	Record low minimum temperature	5.0 C (41.0 F)	43 of 100 (Notable)
Millington 1 SE	United States	Record high minimum temperature	26.7 C (80.1 F)	43 of 100 (Notable)
Forks 1 E	United States	Record daily precipitation	45.0 mm (1.8 in)	43 of 100 (Notable)
Vardo	Norway	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Santo Anastacio	Brazil	Record daily precipitation	84.4 mm (3.3 in)	41 of 100 (Notable)
Putbus	Germany	Record high maximum temperature	28.4 C (83.1 F)	41 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	15.9 C (60.6 F)	41 of 100 (Notable)
Walthill 1E	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Kukuihaele Mill 206	United States	Record daily precipitation	47.5 mm (1.9 in)	41 of 100 (Notable)
Castilho	Brazil	Record daily precipitation	55.2 mm (2.2 in)	40 of 100 (Notable)
Segunda Alianca	Brazil	Record daily precipitation	54.8 mm (2.2 in)	40 of 100 (Notable)
Terceira Alianca	Brazil	Record daily precipitation	38.7 mm (1.5 in)	40 of 100 (Notable)
Kaneohe Bay MCAS	United States	Record daily precipitation	31.2 mm (1.2 in)	40 of 100 (Notable)
Fazenda Rio Preto	Brazil	Record daily precipitation	49.4 mm (1.9 in)	39 of 100 (Notable)
El Sauz	Mexico	Record daily precipitation	50.3 mm (2.0 in)	39 of 100 (Notable)
Narandiba	Brazil	Record daily precipitation	35.4 mm (1.4 in)	38 of 100 (Notable)
Haleakala Rch 432	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Haleakala Rs 338	United States	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Nurnberg	Germany	Record high maximum temperature	32.1 C (89.8 F)	37 of 100 (Notable)
New Harmony	United States	Record daily precipitation	53.1 mm (2.1 in)	37 of 100 (Notable)
Guaira	Brazil	Record daily precipitation	51.3 mm (2.0 in)	36 of 100 (Notable)
Fazenda Vista Bonita	Brazil	Record daily precipitation	70.4 mm (2.8 in)	36 of 100 (Notable)
Ciudad Venustiano Carranza	Mexico	Record daily precipitation	35.3 mm (1.4 in)	36 of 100 (Notable)
Hallock	United States	Record low maximum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Versailles	United States	Record daily precipitation	74.9 mm (2.9 in)	36 of 100 (Notable)
Waynesville 2 W	United States	Record daily precipitation	82.0 mm (3.2 in)	36 of 100 (Notable)
Hollis 5E	United States	Record daily precipitation	50.8 mm (2.0 in)	36 of 100 (Notable)
Caiua	Brazil	Record daily precipitation	65.4 mm (2.6 in)	35 of 100 (Notable)
Piaxtla	Mexico	Record low minimum temperature	10.0 C (50.0 F)	35 of 100 (Notable)
Krasnoshelye	Russia	Record daily precipitation	26.7 mm (1.1 in)	35 of 100 (Notable)
Clinton	United States	Record daily precipitation	61.2 mm (2.4 in)	35 of 100 (Notable)
Surry Mtn Lake	United States	Record daily precipitation	57.4 mm (2.3 in)	35 of 100 (Notable)
Dale Enterprise	United States	Record daily precipitation	28.7 mm (1.1 in)	35 of 100 (Notable)
Fazenda Coroados	Brazil	Record daily precipitation	34.5 mm (1.4 in)	34 of 100 (Routine)
Adamantina	Brazil	Record daily precipitation	39.5 mm (1.6 in)	34 of 100 (Routine)
Rancharia (Mc Fadden)	Brazil	Record daily precipitation	34.8 mm (1.4 in)	34 of 100 (Routine)
Lakeside	United States	Record daily precipitation	88.4 mm (3.5 in)	34 of 100 (Routine)
Hartington	United States	Record daily precipitation	27.4 mm (1.1 in)	34 of 100 (Routine)
Usina Laranja Doce	Brazil	Record daily precipitation	41.0 mm (1.6 in)	33 of 100 (Routine)
Indiana	Brazil	Record daily precipitation	55.6 mm (2.2 in)	33 of 100 (Routine)
Helsinki Kaisaniemi AWS	Finland	Record daily precipitation	36.8 mm (1.4 in)	33 of 100 (Routine)
Garnett 1 E	United States	Record daily precipitation	55.9 mm (2.2 in)	33 of 100 (Routine)
Clearbrook	United States	Record daily precipitation	49.8 mm (2.0 in)	33 of 100 (Routine)
Kaneohe Mauka 781	United States	Record daily precipitation	39.6 mm (1.6 in)	33 of 100 (Routine)
San Francisco (Smn)	Mexico	Record daily precipitation	72.9 mm (2.9 in)	32 of 100 (Routine)

Counts by Type and Timescale

828 records

Records set or tied on 21 August 1989 by type: Highest daily maximum 241, Lowest daily maximum 48, Highest daily minimum 213, Lowest daily minimum 80, Heaviest daily rainfall 246.

Records on 21 August 1989 by type
Record type	Records
Highest daily maximum	241
Lowest daily maximum	48
Highest daily minimum	213
Lowest daily minimum	80
Heaviest daily rainfall	246
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1989 by timescale: all-time 2, monthly 24, daily 802.

How Much Records Were Beaten By

690 broken records

Margins by which the 690 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 130.6. Ties are not counted.

Top 20 by Significance

21 August 1989

Top 20 records on 21 August 1989 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1989	Imbil Forestry, AU	daily rain	50.4 mm (2.0 in)	32.4 mm (1.3 in)	59 years	63 of 100 (Major)
21 August 1989	Piquerobi, BR	daily rain	84.1 mm (3.3 in)	66.6 mm (2.6 in)	44 years	58 of 100 (Notable)
21 August 1989	Skovorodino, RU	all-time high max	40.2 C (104.4 F)	3.4 C (6.1 F)	73 years	56 of 100 (Notable)
21 August 1989	Clearwater, US	daily rain	66.0 mm (2.6 in)	35.5 mm (1.4 in)	52 years	56 of 100 (Notable)
21 August 1989	Crohamhurst, AU	daily rain	37.0 mm (1.5 in)	17.7 mm (0.7 in)	94 years	54 of 100 (Notable)
21 August 1989	Monte Castelo, BR	monthly rain	84.4 mm (3.3 in)	42.2 mm (1.7 in)	3 years	53 of 100 (Notable)
21 August 1989	Vermillion 2 SE, US	daily rain	52.6 mm (2.1 in)	30.8 mm (1.2 in)	67 years	52 of 100 (Notable)
21 August 1989	Keahua 410, US	daily rain	26.7 mm (1.1 in)	18.3 mm (0.7 in)	46 years	52 of 100 (Notable)
21 August 1989	Miyazaki, JP	daily rain	208.5 mm (8.2 in)	130.6 mm (5.1 in)	24 years	50 of 100 (Notable)
21 August 1989	Myponga, AU	daily rain	30.0 mm (1.2 in)	13.7 mm (0.5 in)	71 years	49 of 100 (Notable)
21 August 1989	Monterey, US	daily rain	52.1 mm (2.1 in)	31.3 mm (1.2 in)	32 years	49 of 100 (Notable)
21 August 1989	Lihue WSO AP 1020.1, US	daily rain	35.8 mm (1.4 in)	26.7 mm (1.1 in)	16 years	49 of 100 (Notable)
21 August 1989	Valparaiso, BR	daily rain	47.7 mm (1.9 in)	35.7 mm (1.4 in)	24 years	48 of 100 (Notable)
21 August 1989	Cedar Vale 5SSE, US	daily rain	94.0 mm (3.7 in)	58.7 mm (2.3 in)	24 years	47 of 100 (Notable)
21 August 1989	Ahmadabad, IN	daily rain	79.5 mm (3.1 in)	26.4 mm (1.0 in)	80 years	45 of 100 (Notable)
21 August 1989	Colotlan (Dge), MX	daily low min	5.0 C (41.0 F)	6.7 C (12.1 F)	10 years	43 of 100 (Notable)
21 August 1989	Millington 1 SE, US	monthly high min	26.7 C (80.1 F)	1.1 C (2.0 F)	72 years	43 of 100 (Notable)
21 August 1989	Forks 1 E, US	daily rain	45.0 mm (1.8 in)	17.3 mm (0.7 in)	52 years	43 of 100 (Notable)
21 August 1989	Vardo, NO	daily rain	26.0 mm (1.0 in)	18.0 mm (0.7 in)	28 years	42 of 100 (Notable)
21 August 1989	Santo Anastacio, BR	monthly rain	84.4 mm (3.3 in)	19.4 mm (0.8 in)	33 years	41 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

1800 to 1989

Records set or tied on this calendar date in each year from 1800 to 1989. 1989 had 828 records.

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

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	767
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,289

Download the Data

Data for records on 1989-08-21: 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	638
20 to 40	47
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1