Weather Records on 12 August 1986

615 weather records were set or tied worldwide on 12 August 1986. Highest significance: Highland Home, US.

Key Facts for 12 August 1986

On 12 August 1986, 615 weather records were set or tied at long-record stations worldwide.
205 were record highs and 166 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 603 daily.
Highland Home set a daily record precipitation of 92.7 mm (3.6 in) on 12 August 1986.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 446 records.

Record Map

615 stations

615 station records on 12 August 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 August 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Highland Home	United States	Record daily precipitation	92.7 mm (3.6 in)	66 of 100 (Major)
Machilipatnam	India	Record daily precipitation	116.1 mm (4.6 in)	59 of 100 (Notable)
Tynda	Russia	Record daily precipitation	62.0 mm (2.4 in)	58 of 100 (Notable)
Columbia UNIV of Sc	United States	Record daily precipitation	109.0 mm (4.3 in)	57 of 100 (Notable)
Hof	Germany	Record daily precipitation	39.4 mm (1.6 in)	56 of 100 (Notable)
Hof (Stadt)	Germany	Record daily precipitation	38.1 mm (1.5 in)	51 of 100 (Notable)
Jasper	United States	Record daily precipitation	79.5 mm (3.1 in)	51 of 100 (Notable)
Hanover 4 S	United States	Record daily precipitation	101.6 mm (4.0 in)	49 of 100 (Notable)
Beeville 5 NE	United States	Record daily precipitation	80.8 mm (3.2 in)	48 of 100 (Notable)
Kakinada	India	Record daily precipitation	102.1 mm (4.0 in)	47 of 100 (Notable)
Greensboro AP	United States	Record daily precipitation	70.4 mm (2.8 in)	47 of 100 (Notable)
Mount Hope (Fairview)	Australia	Record daily precipitation	28.6 mm (1.1 in)	46 of 100 (Notable)
Weiden	Germany	Record daily precipitation	30.8 mm (1.2 in)	45 of 100 (Notable)
Rendsburg	Germany	Record daily precipitation	31.2 mm (1.2 in)	45 of 100 (Notable)
Zamboanga	Philippines	Record daily precipitation	68.0 mm (2.7 in)	45 of 100 (Notable)
Ajan	Russia	Record daily precipitation	118.7 mm (4.7 in)	45 of 100 (Notable)
Bishopville 1.4 ENE	United States	Record daily precipitation	94.0 mm (3.7 in)	45 of 100 (Notable)
Heidenheim/Brenz	Germany	Record daily precipitation	38.4 mm (1.5 in)	43 of 100 (Notable)
Bad Lobenstein	Germany	Record daily precipitation	32.5 mm (1.3 in)	43 of 100 (Notable)
Ph Wainiha 1115	United States	Record daily precipitation	140.5 mm (5.5 in)	43 of 100 (Notable)
Heilbronn	Germany	Record daily precipitation	31.2 mm (1.2 in)	42 of 100 (Notable)
Eureka	United States	Record high maximum temperature	38.3 C (100.9 F)	42 of 100 (Notable)
Nagold	Germany	Record daily precipitation	34.3 mm (1.4 in)	41 of 100 (Notable)
Escarcega (Smn)	Mexico	Record daily precipitation	104.4 mm (4.1 in)	41 of 100 (Notable)
Rapid City 4NW	United States	Record daily precipitation	68.1 mm (2.7 in)	41 of 100 (Notable)
Guga	Russia	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Schwabisch Gmund-Strassdorf	Germany	Record daily precipitation	36.1 mm (1.4 in)	39 of 100 (Notable)
Burukan	Russia	Record daily precipitation	48.4 mm (1.9 in)	39 of 100 (Notable)
Levan	United States	Record high minimum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Lumpkin 2 SE	United States	Record high minimum temperature	25.6 C (78.1 F)	38 of 100 (Notable)
Tranebjerg	Denmark	Record low minimum temperature	7.9 C (46.2 F)	37 of 100 (Notable)
Tower 2S	United States	Record low minimum temperature	-0.6 C (30.9 F)	37 of 100 (Notable)
Greeneville Exp STN	United States	Record low maximum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Heinersreuth-Vollhof	Germany	Record high minimum temperature	16.4 C (61.5 F)	36 of 100 (Notable)
Neudenau	Germany	Record daily precipitation	25.7 mm (1.0 in)	36 of 100 (Notable)
Schallstadt-Mengen	Germany	Record daily precipitation	41.6 mm (1.6 in)	36 of 100 (Notable)
Tularosa	United States	Record low minimum temperature	10.0 C (50.0 F)	36 of 100 (Notable)
Iliiliula Intake 1050	United States	Record daily precipitation	94.0 mm (3.7 in)	36 of 100 (Notable)
Chumphon	Thailand	Record daily precipitation	63.0 mm (2.5 in)	35 of 100 (Notable)
Tamiami Trail 40 Mi Bend	United States	Record low maximum temperature	28.9 C (84.0 F)	35 of 100 (Notable)
Montpelier	United States	Record low minimum temperature	6.1 C (43.0 F)	35 of 100 (Notable)
Oberlin	United States	Record low maximum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Altglashutte	Germany	Record daily precipitation	35.3 mm (1.4 in)	34 of 100 (Routine)
Crescent City	United States	Record high minimum temperature	26.1 C (79.0 F)	34 of 100 (Routine)
Lakin	United States	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
Batesburg	United States	Record daily precipitation	29.7 mm (1.2 in)	34 of 100 (Routine)
Stotten	Germany	Record daily precipitation	45.4 mm (1.8 in)	33 of 100 (Routine)
Metzingen	Germany	Record daily precipitation	37.2 mm (1.5 in)	33 of 100 (Routine)
Crescent City	United States	Record high maximum temperature	37.8 C (100.0 F)	33 of 100 (Routine)
Herkimer	United States	Record daily precipitation	73.9 mm (2.9 in)	33 of 100 (Routine)
Kaiserslautern	Germany	Record high minimum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Santo Domingo	Mexico	Record low minimum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Mtn Lake	United States	Record low minimum temperature	18.3 C (64.9 F)	32 of 100 (Routine)
La Junta	Mexico	Record daily precipitation	46.0 mm (1.8 in)	31 of 100 (Routine)
Presa Colorines (Cfe)	Mexico	Record low minimum temperature	10.6 C (51.1 F)	31 of 100 (Routine)
New Orleans Wtp	United States	Record daily precipitation	57.7 mm (2.3 in)	31 of 100 (Routine)
Rusk	United States	Record daily precipitation	66.0 mm (2.6 in)	31 of 100 (Routine)
Fladungen-Heufurt	Germany	Record daily precipitation	27.2 mm (1.1 in)	30 of 100 (Routine)
Hornisgrinde	Germany	Record daily precipitation	62.8 mm (2.5 in)	30 of 100 (Routine)
Nufringen	Germany	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)

Counts by Type and Timescale

615 records

Records set or tied on 12 August 1986 by type: Highest daily maximum 39, Lowest daily maximum 80, Highest daily minimum 166, Lowest daily minimum 86, Heaviest daily rainfall 244.

Records on 12 August 1986 by type
Record type	Records
Highest daily maximum	39
Lowest daily maximum	80
Highest daily minimum	166
Lowest daily minimum	86
Heaviest daily rainfall	244
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 August 1986 by timescale: all-time 0, monthly 12, daily 603.

How Much Records Were Beaten By

483 broken records

Margins by which the 483 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.8. Ties are not counted.

Top 20 by Significance

12 August 1986

Top 20 records on 12 August 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 August 1986	Highland Home, US	daily rain	92.7 mm (3.6 in)	46.5 mm (1.8 in)	92 years	66 of 100 (Major)
12 August 1986	Machilipatnam, IN	daily rain	116.1 mm (4.6 in)	61.7 mm (2.4 in)	60 years	59 of 100 (Notable)
12 August 1986	Tynda, RU	daily rain	62.0 mm (2.4 in)	42.0 mm (1.7 in)	44 years	58 of 100 (Notable)
12 August 1986	Columbia UNIV of Sc, US	daily rain	109.0 mm (4.3 in)	62.3 mm (2.5 in)	43 years	57 of 100 (Notable)
12 August 1986	Hof, DE	daily rain	39.4 mm (1.6 in)	31.6 mm (1.2 in)	37 years	56 of 100 (Notable)
12 August 1986	Hof (Stadt), DE	daily rain	38.1 mm (1.5 in)	26.8 mm (1.1 in)	37 years	51 of 100 (Notable)
12 August 1986	Jasper, US	daily rain	79.5 mm (3.1 in)	50.3 mm (2.0 in)	31 years	51 of 100 (Notable)
12 August 1986	Hanover 4 S, US	daily rain	101.6 mm (4.0 in)	59.2 mm (2.3 in)	23 years	49 of 100 (Notable)
12 August 1986	Beeville 5 NE, US	daily rain	80.8 mm (3.2 in)	69.6 mm (2.7 in)	25 years	48 of 100 (Notable)
12 August 1986	Kakinada, IN	daily rain	102.1 mm (4.0 in)	44.7 mm (1.8 in)	31 years	47 of 100 (Notable)
12 August 1986	Greensboro AP, US	daily rain	70.4 mm (2.8 in)	52.6 mm (2.1 in)	20 years	47 of 100 (Notable)
12 August 1986	Mount Hope (Fairview), AU	daily rain	28.6 mm (1.1 in)	11.1 mm (0.4 in)	53 years	46 of 100 (Notable)
12 August 1986	Weiden, DE	daily rain	30.8 mm (1.2 in)	18.2 mm (0.7 in)	37 years	45 of 100 (Notable)
12 August 1986	Rendsburg, DE	daily rain	31.2 mm (1.2 in)	21.6 mm (0.9 in)	44 years	45 of 100 (Notable)
12 August 1986	Zamboanga, PH	daily rain	68.0 mm (2.7 in)	48.0 mm (1.9 in)	27 years	45 of 100 (Notable)
12 August 1986	Ajan, RU	daily rain	118.7 mm (4.7 in)	73.8 mm (2.9 in)	13 years	45 of 100 (Notable)
12 August 1986	Bishopville 1.4 ENE, US	daily rain	94.0 mm (3.7 in)	61.0 mm (2.4 in)	12 years	45 of 100 (Notable)
12 August 1986	Heidenheim/Brenz, DE	daily rain	38.4 mm (1.5 in)	16.9 mm (0.7 in)	44 years	43 of 100 (Notable)
12 August 1986	Bad Lobenstein, DE	daily rain	32.5 mm (1.3 in)	25.0 mm (1.0 in)	19 years	43 of 100 (Notable)
12 August 1986	Ph Wainiha 1115, US	daily rain	140.5 mm (5.5 in)	80.8 mm (3.2 in)	3 years	43 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 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 615 records.

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

Records on 08-12 in each year
Year	Records
1793	1
1796	1
1811	2
1814	1
1815	1
1825	1
1843	1
1851	1
1854	1
1855	2
1856	1
1861	1
1864	3
1865	1
1867	1
1868	1
1871	2
1872	1
1873	1
1874	2
1875	3
1876	2
1879	1
1881	2
1883	1
1884	1
1885	1
1887	2
1888	2
1889	4
1890	4
1891	4
1892	2
1893	1
1894	1
1895	6
1896	2
1897	4
1898	1
1899	10
1900	1
1901	5
1902	9
1903	14
1904	13
1905	16
1906	8
1907	8
1908	31
1909	42
1910	16
1911	33
1912	40
1913	39
1914	26
1915	46
1916	31
1917	134
1918	37
1919	42
1920	26
1921	174
1922	71
1923	89
1924	267
1925	150
1926	154
1927	145
1928	173
1929	276
1930	501
1931	708
1932	418
1933	271
1934	471
1935	408
1936	591
1937	356
1938	237
1939	282
1940	545
1941	481
1942	257
1943	523
1944	595
1945	295
1946	655
1947	729
1948	384
1949	469
1950	442
1951	357
1952	533
1953	227
1954	969
1955	590
1956	265
1957	384
1958	406
1959	388
1960	707
1961	381
1962	466
1963	559
1964	1,346
1965	977
1966	777
1967	1,135
1968	444
1969	629
1970	422
1971	486
1972	473
1973	442
1974	560
1975	593
1976	495
1977	747
1978	571
1979	1,192
1980	692
1981	665
1982	789
1983	923
1984	665
1985	935
1986	615
1987	935
1988	1,518
1989	827
1990	727
1991	726
1992	1,134
1993	936
1994	861
1995	1,654
1996	1,336
1997	1,363
1998	1,215
1999	1,325
2000	741
2001	855
2002	1,345
2003	1,752
2004	1,872
2005	1,085
2006	874
2007	1,209
2008	970
2009	814
2010	1,907
2011	903
2012	910
2013	427
2014	787
2015	757
2016	1,290
2017	533
2018	571
2019	695
2020	730
2021	980
2022	616
2023	779
2024	659
2025	639
2026	849

Download the Data

Data for records on 1986-08-12: 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 20	438
20 to 40	30
40 to 60	8
60 to 80	6
80 to 100	1