Weather Records on 4 August 1986

905 weather records were set or tied worldwide on 4 August 1986. Highest significance: Wyee (Wyee Farms Rd), AU.

Key Facts for 4 August 1986

On 4 August 1986, 905 weather records were set or tied at long-record stations worldwide.
379 were record highs and 213 were record lows, counting maximum and minimum temperature.
By timescale, 14 were all-time records, 77 monthly and 814 daily.
Wyee (Wyee Farms Rd) set a daily record precipitation of 101.8 mm (4.0 in) on 4 August 1986.
Across 165 earlier years (1815 to 2026) the same calendar date averaged 439 records.

Record Map

905 stations

905 station records on 4 August 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 August 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wyee (Wyee Farms Rd)	Australia	Record daily precipitation	101.8 mm (4.0 in)	71 of 100 (Major)
Beckom (Stawell St)	Australia	Record daily precipitation	35.0 mm (1.4 in)	64 of 100 (Major)
Aldinga Post Office	Australia	Record daily precipitation	29.0 mm (1.1 in)	61 of 100 (Major)
Cape Agulhas	South Africa	Record daily precipitation	39.0 mm (1.5 in)	60 of 100 (Major)
Elderslie	Australia	Record daily precipitation	52.0 mm (2.0 in)	59 of 100 (Notable)
Whitton (Conapaira St)	Australia	Record daily precipitation	38.4 mm (1.5 in)	58 of 100 (Notable)
Dutch Harbor	United States	Record low minimum temperature	-3.9 C (25.0 F)	58 of 100 (Notable)
Wien	Austria	Record daily precipitation	51.2 mm (2.0 in)	57 of 100 (Notable)
Garrigala	Turkmenistan	Record daily precipitation	77.0 mm (3.0 in)	57 of 100 (Notable)
La Motte (Bos)	South Africa	Record daily precipitation	114.8 mm (4.5 in)	56 of 100 (Notable)
Yanco Regulator	Australia	Record daily precipitation	31.0 mm (1.2 in)	55 of 100 (Notable)
Montagu (Pol)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	55 of 100 (Notable)
Gumeracha	Australia	Record daily precipitation	34.6 mm (1.4 in)	54 of 100 (Notable)
Barellan (Rodmell)	Australia	Record daily precipitation	34.6 mm (1.4 in)	54 of 100 (Notable)
Darlington Point (St Pauls Clo	Australia	Record daily precipitation	37.2 mm (1.5 in)	54 of 100 (Notable)
Karasuk	Russia	Record daily precipitation	48.1 mm (1.9 in)	54 of 100 (Notable)
North Adelaide	Australia	Record daily precipitation	31.0 mm (1.2 in)	53 of 100 (Notable)
Leeton (Bents Hill)	Australia	Record daily precipitation	42.8 mm (1.7 in)	53 of 100 (Notable)
Leeton Caravan Park	Australia	Record daily precipitation	29.6 mm (1.2 in)	53 of 100 (Notable)
Onahama	Japan	Record daily precipitation	194.5 mm (7.7 in)	53 of 100 (Notable)
Kumagaya	Japan	Record daily precipitation	160.5 mm (6.3 in)	52 of 100 (Notable)
Binya Post Office	Australia	Record daily precipitation	25.5 mm (1.0 in)	51 of 100 (Notable)
Sendai	Japan	Record daily precipitation	106.0 mm (4.2 in)	51 of 100 (Notable)
Fukushima Arpt	Japan	Record daily precipitation	94.5 mm (3.7 in)	51 of 100 (Notable)
Shirakawa	Japan	Record daily precipitation	125.0 mm (4.9 in)	51 of 100 (Notable)
Timiryazevskij	Russia	Record daily precipitation	130.7 mm (5.1 in)	51 of 100 (Notable)
Maebashi	Japan	Record daily precipitation	102.5 mm (4.0 in)	50 of 100 (Notable)
Salzburg	Austria	Record high minimum temperature	21.6 C (70.9 F)	49 of 100 (Notable)
Katsuura	Japan	Record daily precipitation	173.0 mm (6.8 in)	49 of 100 (Notable)
Kamen-Na-Obi	Russia	Record daily precipitation	31.2 mm (1.2 in)	49 of 100 (Notable)
Kitzingen	Germany	Record daily precipitation	34.8 mm (1.4 in)	48 of 100 (Notable)
Yokohama	Japan	Record daily precipitation	152.5 mm (6.0 in)	48 of 100 (Notable)
Quandialla Post Office	Australia	Record daily precipitation	26.6 mm (1.0 in)	47 of 100 (Notable)
West Wyalong (Tallimbalong)	Australia	Record daily precipitation	25.6 mm (1.0 in)	47 of 100 (Notable)
Tallimba Store	Australia	Record daily precipitation	28.4 mm (1.1 in)	47 of 100 (Notable)
Kr.Rottal-Inn Falkenberg	Germany	Record daily precipitation	40.6 mm (1.6 in)	47 of 100 (Notable)
Nikko	Japan	Record daily precipitation	182.5 mm (7.2 in)	47 of 100 (Notable)
Tatarsk	Russia	Record daily precipitation	32.2 mm (1.3 in)	47 of 100 (Notable)
Krasnoozersk	Russia	Record daily precipitation	69.3 mm (2.7 in)	47 of 100 (Notable)
Gollhofen	Germany	Record daily precipitation	40.5 mm (1.6 in)	46 of 100 (Notable)
Kofu	Japan	Record daily precipitation	119.0 mm (4.7 in)	46 of 100 (Notable)
Many	United States	Record daily precipitation	82.8 mm (3.3 in)	46 of 100 (Notable)
Choshi	Japan	Record daily precipitation	149.0 mm (5.9 in)	45 of 100 (Notable)
Oshima	Japan	Record daily precipitation	301.0 mm (11.9 in)	45 of 100 (Notable)
Greenethorpe (Iandra)	Australia	Record daily precipitation	25.4 mm (1.0 in)	43 of 100 (Notable)
Chichibu	Japan	Record daily precipitation	148.5 mm (5.8 in)	43 of 100 (Notable)
Brazos	United States	Record daily precipitation	59.2 mm (2.3 in)	43 of 100 (Notable)
Klippeneck	Germany	Record daily precipitation	49.7 mm (2.0 in)	42 of 100 (Notable)
Miyakejima	Japan	Record daily precipitation	271.0 mm (10.7 in)	42 of 100 (Notable)
McGregor	United States	Record daily precipitation	43.9 mm (1.7 in)	42 of 100 (Notable)
Moruya Heads Pilot Station	Australia	Record daily precipitation	34.8 mm (1.4 in)	41 of 100 (Notable)
Hamamatsu	Japan	Record daily precipitation	130.0 mm (5.1 in)	41 of 100 (Notable)
Yokosuka	Japan	Record daily precipitation	148.3 mm (5.8 in)	41 of 100 (Notable)
Yenda (Henry Street)	Australia	Record daily precipitation	26.5 mm (1.0 in)	40 of 100 (Notable)
Mito	Japan	Record daily precipitation	244.0 mm (9.6 in)	40 of 100 (Notable)
Shizuoka	Japan	Record daily precipitation	216.5 mm (8.5 in)	40 of 100 (Notable)
Ust-Barguzin	Russia	Record high minimum temperature	19.9 C (67.8 F)	40 of 100 (Notable)
Jarnbergsas	Sweden	Record daily precipitation	37.1 mm (1.5 in)	39 of 100 (Notable)
Greenville	United States	Record low minimum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Kingstree	United States	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)

Counts by Type and Timescale

905 records

Records set or tied on 4 August 1986 by type: Highest daily maximum 163, Lowest daily maximum 66, Highest daily minimum 216, Lowest daily minimum 147, Heaviest daily rainfall 313.

Records on 4 August 1986 by type
Record type	Records
Highest daily maximum	163
Lowest daily maximum	66
Highest daily minimum	216
Lowest daily minimum	147
Heaviest daily rainfall	313
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 August 1986 by timescale: all-time 14, monthly 77, daily 814.

How Much Records Were Beaten By

743 broken records

Margins by which the 743 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 158.9. Ties are not counted.

Top 20 by Significance

4 August 1986

Top 20 records on 4 August 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 August 1986	Wyee (Wyee Farms Rd), AU	daily rain	101.8 mm (4.0 in)	81.5 mm (3.2 in)	77 years	71 of 100 (Major)
4 August 1986	Beckom (Stawell St), AU	daily rain	35.0 mm (1.4 in)	23.8 mm (0.9 in)	69 years	64 of 100 (Major)
4 August 1986	Aldinga Post Office, AU	daily rain	29.0 mm (1.1 in)	12.2 mm (0.5 in)	86 years	61 of 100 (Major)
4 August 1986	Cape Agulhas, ZA	daily rain	39.0 mm (1.5 in)	27.0 mm (1.1 in)	40 years	60 of 100 (Major)
4 August 1986	Elderslie, AU	daily rain	52.0 mm (2.0 in)	37.8 mm (1.5 in)	49 years	59 of 100 (Notable)
4 August 1986	Whitton (Conapaira St), AU	daily rain	38.4 mm (1.5 in)	26.5 mm (1.0 in)	32 years	58 of 100 (Notable)
4 August 1986	Dutch Harbor, US	monthly low min	-3.9 C (25.0 F)	5.0 C (9.0 F)	68 years	58 of 100 (Notable)
4 August 1986	Wien, AT	daily rain	51.2 mm (2.0 in)	23.4 mm (0.9 in)	59 years	57 of 100 (Notable)
4 August 1986	Garrigala, TM	monthly rain	77.0 mm (3.0 in)	31.6 mm (1.2 in)	23 years	57 of 100 (Notable)
4 August 1986	La Motte (Bos), ZA	daily rain	114.8 mm (4.5 in)	88.1 mm (3.5 in)	33 years	56 of 100 (Notable)
4 August 1986	Yanco Regulator, AU	daily rain	31.0 mm (1.2 in)	21.9 mm (0.9 in)	32 years	55 of 100 (Notable)
4 August 1986	Montagu (Pol), ZA	daily rain	32.5 mm (1.3 in)	17.3 mm (0.7 in)	96 years	55 of 100 (Notable)
4 August 1986	Gumeracha, AU	daily rain	34.6 mm (1.4 in)	14.3 mm (0.6 in)	86 years	54 of 100 (Notable)
4 August 1986	Barellan (Rodmell), AU	daily rain	34.6 mm (1.4 in)	26.0 mm (1.0 in)	32 years	54 of 100 (Notable)
4 August 1986	Darlington Point (St Pauls Clo, AU	daily rain	37.2 mm (1.5 in)	22.0 mm (0.9 in)	32 years	54 of 100 (Notable)
4 August 1986	Karasuk, RU	daily rain	48.1 mm (1.9 in)	36.6 mm (1.4 in)	33 years	54 of 100 (Notable)
4 August 1986	North Adelaide, AU	daily rain	31.0 mm (1.2 in)	9.4 mm (0.37 in)	86 years	53 of 100 (Notable)
4 August 1986	Leeton (Bents Hill), AU	daily rain	42.8 mm (1.7 in)	35.2 mm (1.4 in)	32 years	53 of 100 (Notable)
4 August 1986	Leeton Caravan Park, AU	daily rain	29.6 mm (1.2 in)	18.2 mm (0.7 in)	47 years	53 of 100 (Notable)
4 August 1986	Onahama, JP	daily rain	194.5 mm (7.7 in)	158.9 mm (6.3 in)	33 years	53 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

1815 to 1986

Records set or tied on this calendar date in each year from 1815 to 1986. 1986 had 905 records.

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

Records on 08-04 in each year
Year	Records
1815	1
1827	1
1830	2
1833	1
1835	1
1843	1
1846	1
1847	1
1848	1
1857	1
1859	2
1860	2
1863	1
1865	3
1867	1
1868	1
1870	1
1871	1
1872	2
1874	3
1875	1
1878	3
1879	1
1881	2
1882	1
1883	1
1885	3
1886	1
1887	3
1888	4
1889	2
1890	1
1891	2
1893	2
1894	1
1895	3
1896	4
1897	3
1898	1
1899	7
1900	6
1902	4
1903	18
1904	11
1905	19
1906	14
1907	20
1908	31
1909	27
1910	17
1911	23
1912	51
1913	15
1914	33
1915	85
1916	97
1917	29
1918	95
1919	34
1920	79
1921	67
1922	68
1923	146
1924	132
1925	77
1926	334
1927	136
1928	352
1929	224
1930	698
1931	371
1932	258
1933	347
1934	521
1935	367
1936	719
1937	258
1938	489
1939	433
1940	236
1941	383
1942	303
1943	468
1944	662
1945	355
1946	265
1947	845
1948	558
1949	421
1950	666
1951	680
1952	465
1953	1,017
1954	426
1955	624
1956	437
1957	343
1958	533
1959	303
1960	331
1961	745
1962	470
1963	438
1964	885
1965	409
1966	552
1967	428
1968	280
1969	638
1970	415
1971	813
1972	773
1973	748
1974	1,040
1975	772
1976	801
1977	599
1978	1,051
1979	510
1980	998
1981	636
1982	703
1983	920
1984	722
1985	634
1986	905
1987	892
1988	1,204
1989	738
1990	1,013
1991	769
1992	754
1993	1,046
1994	1,265
1995	1,117
1996	1,143
1997	891
1998	1,423
1999	762
2000	840
2001	1,087
2002	928
2003	1,309
2004	968
2005	1,246
2006	1,131
2007	685
2008	883
2009	681
2010	1,665
2011	1,536
2012	738
2013	452
2014	980
2015	505
2016	732
2017	1,134
2018	760
2019	499
2020	778
2021	691
2022	1,185
2023	1,150
2024	809
2025	840
2026	1,044

Download the Data

Data for records on 1986-08-04: 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	677
20 to 40	36
40 to 60	8
60 to 80	5
80 to 100	10
100 to 120	3
120 to 140	3
140 to 160	1