Weather Records on 11 August 1986

563 weather records were set or tied worldwide on 11 August 1986. Highest significance: Lilydale, AU.

Key Facts for 11 August 1986

On 11 August 1986, 563 weather records were set or tied at long-record stations worldwide.
163 were record highs and 170 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 13 monthly and 546 daily.
Lilydale set a daily record precipitation of 26.0 mm (1.0 in) on 11 August 1986.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 460 records.

Record Map

563 stations

563 station records on 11 August 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lilydale	Australia	Record daily precipitation	26.0 mm (1.0 in)	64 of 100 (Major)
Greenville	United States	Record daily precipitation	172.0 mm (6.8 in)	64 of 100 (Major)
Murom	Russia	Record daily precipitation	56.6 mm (2.2 in)	53 of 100 (Notable)
Winnfield 3 N	United States	Record daily precipitation	77.7 mm (3.1 in)	52 of 100 (Notable)
Utica	United States	Record daily precipitation	72.1 mm (2.8 in)	50 of 100 (Notable)
Newport 1 NW	United States	Record daily precipitation	64.0 mm (2.5 in)	49 of 100 (Notable)
Hallettsville 2 N	United States	Record daily precipitation	59.9 mm (2.4 in)	48 of 100 (Notable)
Yangjiang	China	Record daily precipitation	214.8 mm (8.5 in)	47 of 100 (Notable)
Renningen-Ihinger Hof	Germany	Record daily precipitation	46.9 mm (1.8 in)	47 of 100 (Notable)
Tortosa - Observatorio del Ebr	Spain	Record daily precipitation	48.2 mm (1.9 in)	47 of 100 (Notable)
Presa Colorines (Cfe)	Mexico	Record low minimum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Chatillon-Coligny	France	Record daily precipitation	36.0 mm (1.4 in)	42 of 100 (Notable)
Natchez	United States	Record low maximum temperature	25.0 C (77.0 F)	42 of 100 (Notable)
Cameron	United States	Record daily precipitation	69.1 mm (2.7 in)	42 of 100 (Notable)
Kempten	Germany	Record daily precipitation	46.6 mm (1.8 in)	40 of 100 (Notable)
Ermakovskoe	Russia	Record daily precipitation	31.5 mm (1.2 in)	40 of 100 (Notable)
Uppsala_Aut	Sweden	Record low maximum temperature	15.2 C (59.4 F)	40 of 100 (Notable)
Grand Coteau	United States	Record daily precipitation	68.6 mm (2.7 in)	40 of 100 (Notable)
Gholson 8 W	United States	Record daily precipitation	83.8 mm (3.3 in)	40 of 100 (Notable)
Hilton Head	United States	Record high minimum temperature	29.4 C (84.9 F)	40 of 100 (Notable)
Khorog	Tajikistan	Record low maximum temperature	18.1 C (64.6 F)	39 of 100 (Notable)
Begumpet Obsy	India	Record daily precipitation	30.7 mm (1.2 in)	38 of 100 (Notable)
Sholapur	India	Record daily precipitation	39.1 mm (1.5 in)	38 of 100 (Notable)
Coeur D'Alene	United States	Record high maximum temperature	39.4 C (102.9 F)	38 of 100 (Notable)
Moscow U of I	United States	Record high minimum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Willmar Wwtp	United States	Record low maximum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Medford	United States	Record low maximum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record high minimum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Iliamna AP	United States	Record low minimum temperature	1.7 C (35.1 F)	36 of 100 (Notable)
Incheon	Korea, South	Record daily precipitation	102.0 mm (4.0 in)	35 of 100 (Notable)
Buenavista de Cuellar	Mexico	Record daily precipitation	134.9 mm (5.3 in)	35 of 100 (Notable)
Estherville 4E	United States	Record low minimum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Fichtelberg	Germany	Record daily precipitation	38.4 mm (1.5 in)	34 of 100 (Routine)
Methoni	Greece	Record high maximum temperature	35.6 C (96.1 F)	34 of 100 (Routine)
Vernon	United States	Record daily precipitation	39.6 mm (1.6 in)	34 of 100 (Routine)
Crescent City	United States	Record high minimum temperature	25.6 C (78.1 F)	34 of 100 (Routine)
Sibley	United States	Record low maximum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Penwell	United States	Record daily precipitation	34.3 mm (1.4 in)	34 of 100 (Routine)
Windom	United States	Record low maximum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Bluff Lake	United States	Record daily precipitation	67.1 mm (2.6 in)	33 of 100 (Routine)
Lambertville	United States	Record daily precipitation	56.1 mm (2.2 in)	33 of 100 (Routine)
Tuckerton 2 NE	United States	Record high minimum temperature	23.3 C (73.9 F)	33 of 100 (Routine)
Hillsboro	United States	Record low maximum temperature	30.6 C (87.1 F)	33 of 100 (Routine)
Greifswald	Germany	Record low minimum temperature	7.3 C (45.1 F)	32 of 100 (Routine)
Minatitlan	Mexico	Record daily precipitation	137.9 mm (5.4 in)	32 of 100 (Routine)
Oberlin Fire Twr	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Doylestown	United States	Record daily precipitation	53.3 mm (2.1 in)	32 of 100 (Routine)
Vandergrift	United States	Record daily precipitation	46.5 mm (1.8 in)	32 of 100 (Routine)
Mont-Aigoual	France	Record daily precipitation	36.0 mm (1.4 in)	31 of 100 (Routine)
Dijon-Longvic	France	Record daily precipitation	47.4 mm (1.9 in)	31 of 100 (Routine)
Jeremiah 1 S	United States	Record daily precipitation	45.7 mm (1.8 in)	31 of 100 (Routine)
Canton 4N	United States	Record daily precipitation	41.9 mm (1.6 in)	31 of 100 (Routine)
Valliant 3 W	United States	Record daily precipitation	49.0 mm (1.9 in)	31 of 100 (Routine)
Darlington	United States	Record high minimum temperature	24.4 C (75.9 F)	31 of 100 (Routine)
Rinconada	Mexico	Record high maximum temperature	37.8 C (100.0 F)	30 of 100 (Routine)
Ljubljana Bezigrad	Slovenia	Record high minimum temperature	18.5 C (65.3 F)	30 of 100 (Routine)
Tracy	United States	Record low maximum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Greenville	United States	Record low minimum temperature	15.6 C (60.1 F)	30 of 100 (Routine)
Crane	United States	Record daily precipitation	141.0 mm (5.6 in)	30 of 100 (Routine)
Paris	United States	Record low maximum temperature	25.6 C (78.1 F)	30 of 100 (Routine)

Counts by Type and Timescale

563 records

Records set or tied on 11 August 1986 by type: Highest daily maximum 53, Lowest daily maximum 87, Highest daily minimum 110, Lowest daily minimum 83, Heaviest daily rainfall 230.

Records on 11 August 1986 by type
Record type	Records
Highest daily maximum	53
Lowest daily maximum	87
Highest daily minimum	110
Lowest daily minimum	83
Heaviest daily rainfall	230
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 1986 by timescale: all-time 4, monthly 13, daily 546.

How Much Records Were Beaten By

437 broken records

Margins by which the 437 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 154.8. Ties are not counted.

Top 20 by Significance

11 August 1986

Top 20 records on 11 August 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1986	Lilydale, AU	daily rain	26.0 mm (1.0 in)	22.7 mm (0.9 in)	53 years	64 of 100 (Major)
11 August 1986	Greenville, US	all-time rain	172.0 mm (6.8 in)	24.4 mm (1.0 in)	68 years	64 of 100 (Major)
11 August 1986	Murom, RU	daily rain	56.6 mm (2.2 in)	50.8 mm (2.0 in)	28 years	53 of 100 (Notable)
11 August 1986	Winnfield 3 N, US	daily rain	77.7 mm (3.1 in)	50.8 mm (2.0 in)	25 years	52 of 100 (Notable)
11 August 1986	Utica, US	daily rain	72.1 mm (2.8 in)	37.8 mm (1.5 in)	44 years	50 of 100 (Notable)
11 August 1986	Newport 1 NW, US	daily rain	64.0 mm (2.5 in)	27.7 mm (1.1 in)	51 years	49 of 100 (Notable)
11 August 1986	Hallettsville 2 N, US	daily rain	59.9 mm (2.4 in)	41.1 mm (1.6 in)	60 years	48 of 100 (Notable)
11 August 1986	Yangjiang, CN	daily rain	214.8 mm (8.5 in)	154.8 mm (6.1 in)	13 years	47 of 100 (Notable)
11 August 1986	Renningen-Ihinger Hof, DE	daily rain	46.9 mm (1.8 in)	24.9 mm (1.0 in)	28 years	47 of 100 (Notable)
11 August 1986	Tortosa - Observatorio del Ebr, ES	daily rain	48.2 mm (1.9 in)	39.8 mm (1.6 in)	17 years	47 of 100 (Notable)
11 August 1986	Presa Colorines (Cfe), MX	daily low min	10.6 C (51.1 F)	3.3 C (5.9 F)	29 years	44 of 100 (Notable)
11 August 1986	Chatillon-Coligny, FR	daily rain	36.0 mm (1.4 in)	27.0 mm (1.1 in)	0 years	42 of 100 (Notable)
11 August 1986	Natchez, US	daily low max	25.0 C (77.0 F)	1.7 C (3.1 F)	87 years	42 of 100 (Notable)
11 August 1986	Cameron, US	daily rain	69.1 mm (2.7 in)	50.6 mm (2.0 in)	7 years	42 of 100 (Notable)
11 August 1986	Kempten, DE	daily rain	46.6 mm (1.8 in)	8.1 mm (0.32 in)	80 years	40 of 100 (Notable)
11 August 1986	Ermakovskoe, RU	daily rain	31.5 mm (1.2 in)	18.5 mm (0.7 in)	25 years	40 of 100 (Notable)
11 August 1986	Uppsala_Aut, SE	daily low max	15.2 C (59.4 F)	0.3 C (0.5 F)	129 years	40 of 100 (Notable)
11 August 1986	Grand Coteau, US	daily rain	68.6 mm (2.7 in)	11.4 mm (0.4 in)	88 years	40 of 100 (Notable)
11 August 1986	Gholson 8 W, US	daily rain	83.8 mm (3.3 in)	40.6 mm (1.6 in)	25 years	40 of 100 (Notable)
11 August 1986	Hilton Head, US	monthly high min	29.4 C (84.9 F)	3.3 C (5.9 F)	33 years	40 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 563 records.

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

Records on 08-11 in each year
Year	Records
1793	1
1796	1
1811	1
1815	2
1838	1
1839	1
1841	1
1851	1
1855	1
1858	1
1861	2
1862	1
1863	1
1864	6
1865	1
1866	6
1869	4
1871	1
1875	1
1879	2
1881	1
1883	1
1885	1
1888	1
1889	4
1890	4
1891	1
1892	4
1893	1
1894	1
1895	2
1896	5
1897	3
1898	2
1899	3
1900	4
1901	4
1902	13
1903	12
1904	19
1905	9
1906	6
1907	8
1908	10
1909	41
1910	9
1911	24
1912	46
1913	43
1914	26
1915	27
1916	64
1917	217
1918	29
1919	18
1920	54
1921	201
1922	98
1923	80
1924	149
1925	219
1926	140
1927	190
1928	174
1929	354
1930	471
1931	453
1932	281
1933	416
1934	620
1935	499
1936	541
1937	356
1938	315
1939	389
1940	359
1941	807
1942	390
1943	345
1944	936
1945	401
1946	419
1947	709
1948	306
1949	471
1950	320
1951	296
1952	417
1953	283
1954	536
1955	319
1956	457
1957	305
1958	494
1959	337
1960	461
1961	429
1962	662
1963	493
1964	677
1965	793
1966	1,037
1967	1,071
1968	619
1969	533
1970	526
1971	711
1972	823
1973	451
1974	596
1975	753
1976	529
1977	845
1978	433
1979	797
1980	929
1981	645
1982	1,232
1983	1,095
1984	822
1985	804
1986	563
1987	885
1988	1,119
1989	983
1990	760
1991	822
1992	928
1993	840
1994	1,173
1995	1,324
1996	1,147
1997	1,512
1998	1,232
1999	1,152
2000	924
2001	811
2002	1,152
2003	1,601
2004	1,478
2005	1,031
2006	896
2007	1,428
2008	945
2009	836
2010	2,289
2011	1,106
2012	953
2013	470
2014	556
2015	696
2016	1,340
2017	619
2018	861
2019	758
2020	688
2021	834
2022	661
2023	757
2024	643
2025	722
2026	765

Download the Data

Data for records on 1986-08-11: 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	401
20 to 40	28
40 to 60	6
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1