Weather Records on 15 August 1989

495 weather records were set or tied worldwide on 15 August 1989. Highest significance: Blaine, US.

Key Facts for 15 August 1989

On 15 August 1989, 495 weather records were set or tied at long-record stations worldwide.
183 were record highs and 191 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 488 daily.
Blaine set a monthly record daily precipitation of 69.9 mm (2.8 in) on 15 August 1989.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 454 records.

Record Map

495 stations

495 station records on 15 August 1989 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1989: highest significance records shown on the map
Station	Country	Type	Value	Significance
Blaine	United States	Record daily precipitation	69.9 mm (2.8 in)	62 of 100 (Major)
Ico	Brazil	Record daily precipitation	39.4 mm (1.6 in)	61 of 100 (Major)
Newnan 7 WNW	United States	Record daily precipitation	99.1 mm (3.9 in)	55 of 100 (Notable)
Matehuala (Smn)	Mexico	Record daily precipitation	41.4 mm (1.6 in)	49 of 100 (Notable)
Durant	United States	Record low maximum temperature	22.8 C (73.0 F)	45 of 100 (Notable)
Khon Kaen	Thailand	Record daily precipitation	93.0 mm (3.7 in)	44 of 100 (Notable)
Tecuanapa	Mexico	Record high minimum temperature	27.8 C (82.0 F)	40 of 100 (Notable)
Onaway 4N	United States	Record daily precipitation	36.6 mm (1.4 in)	40 of 100 (Notable)
Mankato	United States	Record daily precipitation	65.8 mm (2.6 in)	39 of 100 (Notable)
Brookhaven City	United States	Record low minimum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Cleveland	United States	Record daily precipitation	68.6 mm (2.7 in)	38 of 100 (Notable)
Nouakchott	Mauritania	Record daily precipitation	46.0 mm (1.8 in)	37 of 100 (Notable)
San Pedro	Mexico	Record low minimum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Chappells 2 NNW	United States	Record daily precipitation	59.2 mm (2.3 in)	37 of 100 (Notable)
Orangeburg 2	United States	Record daily precipitation	65.5 mm (2.6 in)	37 of 100 (Notable)
Washburn	United States	Record low maximum temperature	17.2 C (63.0 F)	36 of 100 (Notable)
Bonham 3NNE	United States	Record low maximum temperature	27.2 C (81.0 F)	36 of 100 (Notable)
Maebashi	Japan	Record daily precipitation	80.0 mm (3.1 in)	35 of 100 (Notable)
Borinquen AP	Puerto Rico [United States]	Record daily precipitation	72.9 mm (2.9 in)	35 of 100 (Notable)
Sobolevo	Russia	Record daily precipitation	46.0 mm (1.8 in)	35 of 100 (Notable)
Louisburg	United States	Record low maximum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Granville	United States	Record low minimum temperature	3.9 C (39.0 F)	35 of 100 (Notable)
Rome	United States	Record daily precipitation	45.2 mm (1.8 in)	34 of 100 (Routine)
Idabel	United States	Record low maximum temperature	25.0 C (77.0 F)	34 of 100 (Routine)
Nagornyj	Russia	Record daily precipitation	36.0 mm (1.4 in)	33 of 100 (Routine)
Raleigh State UNIV	United States	Record daily precipitation	40.1 mm (1.6 in)	33 of 100 (Routine)
Crockett	United States	Record low maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Mc Clusky	United States	Record low minimum temperature	4.4 C (39.9 F)	32 of 100 (Routine)
Cleburne	United States	Record daily precipitation	38.9 mm (1.5 in)	32 of 100 (Routine)
Lufkin Angelina Co AP	United States	Record daily precipitation	27.4 mm (1.1 in)	32 of 100 (Routine)
Miahuatlan (Smn)	Mexico	Record daily precipitation	42.9 mm (1.7 in)	31 of 100 (Routine)
Cuthbert	United States	Record daily precipitation	43.2 mm (1.7 in)	31 of 100 (Routine)
Cuero	United States	Record low minimum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
McKinney Muni AP	United States	Record low minimum temperature	12.8 C (55.0 F)	31 of 100 (Routine)
Wills Pt	United States	Record low maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Pokrovka	Russia	Record daily precipitation	42.8 mm (1.7 in)	30 of 100 (Routine)
Florence	United States	Record high minimum temperature	28.3 C (82.9 F)	30 of 100 (Routine)
Lumber City	United States	Record daily precipitation	76.7 mm (3.0 in)	30 of 100 (Routine)
Ashland	United States	Record low maximum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Kershaw 1SW	United States	Record low maximum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Tortosa - Observatorio del Ebr	Spain	Record high minimum temperature	24.0 C (75.2 F)	29 of 100 (Routine)
Dahlonega 4WSW	United States	Record daily precipitation	48.3 mm (1.9 in)	29 of 100 (Routine)
Zoquitlan	Mexico	Record low minimum temperature	5.0 C (41.0 F)	28 of 100 (Routine)
Mecca Fire STN	United States	Record high maximum temperature	44.4 C (111.9 F)	27 of 100 (Routine)
Turtle Lake	United States	Record low maximum temperature	18.9 C (66.0 F)	27 of 100 (Routine)
Xichang	China	Record daily precipitation	49.5 mm (1.9 in)	26 of 100 (Routine)
Mae Hong Son	Thailand	Record low minimum temperature	20.0 C (68.0 F)	26 of 100 (Routine)
Lockhart	United States	Record daily precipitation	48.3 mm (1.9 in)	26 of 100 (Routine)
Yerevan	Armenia	Record high maximum temperature	38.3 C (100.9 F)	25 of 100 (Routine)
Shanwei	China	Record low minimum temperature	21.6 C (70.9 F)	25 of 100 (Routine)
Nagano	Japan	Record daily precipitation	26.5 mm (1.0 in)	25 of 100 (Routine)
Tecoman (Dge)	Mexico	Record low minimum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
Cimljansk	Russia	Record daily precipitation	25.8 mm (1.0 in)	25 of 100 (Routine)
Brunswick	United States	Record low maximum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Fredericksburg	United States	Record low minimum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
St George	United States	Record high minimum temperature	26.1 C (79.0 F)	25 of 100 (Routine)
San Jeronimo	Mexico	Record daily precipitation	100.6 mm (4.0 in)	24 of 100 (Routine)
Union de Tula	Mexico	Record daily precipitation	29.2 mm (1.1 in)	24 of 100 (Routine)
Montemorelos	Mexico	Record daily precipitation	43.9 mm (1.7 in)	24 of 100 (Routine)
Slatteroy Fyr	Norway	Record daily precipitation	34.2 mm (1.3 in)	24 of 100 (Routine)

Counts by Type and Timescale

495 records

Records set or tied on 15 August 1989 by type: Highest daily maximum 89, Lowest daily maximum 117, Highest daily minimum 94, Lowest daily minimum 74, Heaviest daily rainfall 121.

Records on 15 August 1989 by type
Record type	Records
Highest daily maximum	89
Lowest daily maximum	117
Highest daily minimum	94
Lowest daily minimum	74
Heaviest daily rainfall	121
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1989 by timescale: all-time 0, monthly 7, daily 488.

How Much Records Were Beaten By

368 broken records

Margins by which the 368 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 56.8. Ties are not counted.

Top 20 by Significance

15 August 1989

Top 20 records on 15 August 1989 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1989	Blaine, US	monthly rain	69.9 mm (2.8 in)	27.5 mm (1.1 in)	13 years	62 of 100 (Major)
15 August 1989	Ico, BR	monthly rain	39.4 mm (1.6 in)	12.9 mm (0.5 in)	75 years	61 of 100 (Major)
15 August 1989	Newnan 7 WNW, US	daily rain	99.1 mm (3.9 in)	40.7 mm (1.6 in)	60 years	55 of 100 (Notable)
15 August 1989	Matehuala (Smn), MX	daily rain	41.4 mm (1.6 in)	25.1 mm (1.0 in)	44 years	49 of 100 (Notable)
15 August 1989	Durant, US	daily low max	22.8 C (73.0 F)	5.5 C (9.9 F)	75 years	45 of 100 (Notable)
15 August 1989	Khon Kaen, TH	daily rain	93.0 mm (3.7 in)	56.8 mm (2.2 in)	18 years	44 of 100 (Notable)
15 August 1989	Tecuanapa, MX	monthly high min	27.8 C (82.0 F)	2.2 C (4.0 F)	30 years	40 of 100 (Notable)
15 August 1989	Onaway 4N, US	daily rain	36.6 mm (1.4 in)	24.2 mm (1.0 in)	30 years	40 of 100 (Notable)
15 August 1989	Mankato, US	daily rain	65.8 mm (2.6 in)	35.1 mm (1.4 in)	16 years	39 of 100 (Notable)
15 August 1989	Brookhaven City, US	daily low min	16.1 C (61.0 F)	0.6 C (1.1 F)	91 years	39 of 100 (Notable)
15 August 1989	Cleveland, US	daily rain	68.6 mm (2.7 in)	44.0 mm (1.7 in)	23 years	38 of 100 (Notable)
15 August 1989	Nouakchott, MR	daily rain	46.0 mm (1.8 in)	29.6 mm (1.2 in)	34 years	37 of 100 (Notable)
15 August 1989	San Pedro, MX	daily low min	17.8 C (64.0 F)	2.2 C (4.0 F)	36 years	37 of 100 (Notable)
15 August 1989	Chappells 2 NNW, US	daily rain	59.2 mm (2.3 in)	12.2 mm (0.5 in)	75 years	37 of 100 (Notable)
15 August 1989	Orangeburg 2, US	daily rain	65.5 mm (2.6 in)	49.5 mm (1.9 in)	12 years	37 of 100 (Notable)
15 August 1989	Washburn, US	daily low max	17.2 C (63.0 F)	1.7 C (3.1 F)	80 years	36 of 100 (Notable)
15 August 1989	Bonham 3NNE, US	daily low max	27.2 C (81.0 F)	2.2 C (4.0 F)	75 years	36 of 100 (Notable)
15 August 1989	Maebashi, JP	daily rain	80.0 mm (3.1 in)	50.6 mm (2.0 in)	24 years	35 of 100 (Notable)
15 August 1989	Borinquen AP, PR	daily rain	72.9 mm (2.9 in)	42.4 mm (1.7 in)	4 years	35 of 100 (Notable)
15 August 1989	Sobolevo, RU	daily rain	46.0 mm (1.8 in)	19.4 mm (0.8 in)	36 years	35 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

1793 to 1989

Records set or tied on this calendar date in each year from 1793 to 1989. 1989 had 495 records.

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

Records on 08-15 in each year
Year	Records
1793	2
1802	1
1805	1
1812	1
1821	1
1838	2
1839	1
1841	1
1844	1
1845	3
1852	1
1854	1
1856	1
1858	1
1861	3
1867	1
1868	2
1869	1
1873	2
1875	1
1876	2
1877	1
1878	1
1879	1
1880	3
1881	2
1882	2
1883	1
1884	2
1885	3
1886	1
1887	1
1888	3
1890	2
1891	2
1892	3
1893	3
1895	1
1896	9
1897	3
1898	1
1899	2
1900	6
1901	5
1902	10
1903	5
1904	17
1905	26
1906	8
1907	14
1908	15
1909	30
1910	16
1911	26
1912	34
1913	42
1914	11
1915	26
1916	223
1917	32
1918	23
1919	22
1920	59
1921	55
1922	86
1923	116
1924	220
1925	91
1926	115
1927	223
1928	271
1929	586
1930	274
1931	351
1932	368
1933	268
1934	992
1935	414
1936	867
1937	574
1938	681
1939	450
1940	372
1941	289
1942	377
1943	426
1944	610
1945	433
1946	285
1947	559
1948	366
1949	559
1950	317
1951	597
1952	596
1953	449
1954	481
1955	539
1956	390
1957	355
1958	1,092
1959	515
1960	417
1961	704
1962	1,052
1963	972
1964	1,185
1965	535
1966	340
1967	687
1968	1,002
1969	583
1970	382
1971	899
1972	613
1973	499
1974	512
1975	490
1976	1,345
1977	550
1978	841
1979	1,788
1980	745
1981	588
1982	479
1983	955
1984	622
1985	915
1986	1,283
1987	1,098
1988	1,479
1989	495
1990	758
1991	778
1992	1,638
1993	831
1994	1,073
1995	1,298
1996	929
1997	927
1998	861
1999	956
2000	932
2001	1,254
2002	1,307
2003	1,248
2004	1,424
2005	1,067
2006	923
2007	1,317
2008	964
2009	1,038
2010	1,622
2011	770
2012	654
2013	711
2014	583
2015	759
2016	707
2017	532
2018	328
2019	435
2020	1,327
2021	900
2022	692
2023	1,414
2024	729
2025	772
2026	975

Download the Data

Data for records on 1989-08-15: 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 10	325
10 to 20	25
20 to 30	11
30 to 40	1
40 to 50	4
50 to 60	2