Weather Records on 4 August 2018

760 weather records were set or tied worldwide on 4 August 2018. Highest significance: Perpignan, FR.

Key Facts for 4 August 2018

On 4 August 2018, 760 weather records were set or tied at long-record stations worldwide.
420 were record highs and 105 were record lows, counting maximum and minimum temperature.
By timescale, 12 were all-time records, 22 monthly and 726 daily.
Perpignan set an all-time record high minimum temperature of 30.3 C (86.5 F) on 4 August 2018.
Across 165 earlier years (1815 to 2026) the same calendar date averaged 439 records.

Record Map

760 stations

760 station records on 4 August 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 August 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Perpignan	France	Record high minimum temperature	30.3 C (86.5 F)	68 of 100 (Major)
Millinocket Muni AP	United States	Record daily precipitation	69.3 mm (2.7 in)	66 of 100 (Major)
Partizansk	Russia	Record daily precipitation	105.9 mm (4.2 in)	65 of 100 (Major)
Murray Lagoon (Hawks Nest)	Australia	Record daily precipitation	48.0 mm (1.9 in)	63 of 100 (Major)
Segeza	Russia	Record daily precipitation	47.8 mm (1.9 in)	62 of 100 (Major)
Medvezegorsk	Russia	Record daily precipitation	48.0 mm (1.9 in)	62 of 100 (Major)
Glens Falls AP	United States	Record daily precipitation	61.2 mm (2.4 in)	61 of 100 (Major)
Goychay	Azerbaijan	Record daily precipitation	99.3 mm (3.9 in)	59 of 100 (Notable)
Burracoppin	Australia	Record daily precipitation	25.4 mm (1.0 in)	55 of 100 (Notable)
Svijagino	Russia	Record daily precipitation	74.1 mm (2.9 in)	54 of 100 (Notable)
Youanmi Valley	Australia	Record daily precipitation	28.4 mm (1.1 in)	53 of 100 (Notable)
Spring Grove	United States	Record daily precipitation	72.4 mm (2.9 in)	52 of 100 (Notable)
Dalyup Park	Australia	Record daily precipitation	25.2 mm (1.0 in)	51 of 100 (Notable)
Crooked Rvr (Crooked River (Ha	Australia	Record daily precipitation	38.0 mm (1.5 in)	51 of 100 (Notable)
Codg Codgen	Australia	Record daily precipitation	27.0 mm (1.1 in)	49 of 100 (Notable)
Liberty 1 NE	United States	Record daily precipitation	53.8 mm (2.1 in)	49 of 100 (Notable)
Cincinnati Muni AP Lunken Fld	United States	Record daily precipitation	80.0 mm (3.1 in)	49 of 100 (Notable)
Greifswalder Oie	Germany	Record high maximum temperature	28.7 C (83.7 F)	48 of 100 (Notable)
Lock Haven Sewage Plt	United States	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Yakutat AP	United States	Record high minimum temperature	15.0 C (59.0 F)	48 of 100 (Notable)
Lisboa Geofisica	Portugal	Record high minimum temperature	28.1 C (82.6 F)	47 of 100 (Notable)
Phillipsburg-Easton Brg	United States	Record daily precipitation	63.5 mm (2.5 in)	47 of 100 (Notable)
Lancang	China	Record daily precipitation	89.2 mm (3.5 in)	46 of 100 (Notable)
Brainerd	United States	Record daily precipitation	66.5 mm (2.6 in)	46 of 100 (Notable)
Hamburg	United States	Record daily precipitation	84.3 mm (3.3 in)	46 of 100 (Notable)
Landisville 2 NW	United States	Record daily precipitation	120.1 mm (4.7 in)	46 of 100 (Notable)
W Pt	United States	Record daily precipitation	48.8 mm (1.9 in)	45 of 100 (Notable)
Sioux Ctr 2 SE	United States	Record daily precipitation	43.9 mm (1.7 in)	44 of 100 (Notable)
Millers 4 NE	United States	Record daily precipitation	71.9 mm (2.8 in)	44 of 100 (Notable)
Quairading	Australia	Record daily precipitation	25.0 mm (1.0 in)	43 of 100 (Notable)
Glenmore	Australia	Record daily precipitation	30.6 mm (1.2 in)	43 of 100 (Notable)
San Francisco Oceanside	United States	Record low minimum temperature	6.7 C (44.1 F)	43 of 100 (Notable)
Ruston la Tech	United States	Record low maximum temperature	26.1 C (79.0 F)	43 of 100 (Notable)
Moose Lake 1 SSE	United States	Record daily precipitation	42.4 mm (1.7 in)	43 of 100 (Notable)
Belvidere Brg	United States	Record daily precipitation	89.4 mm (3.5 in)	43 of 100 (Notable)
Lisboa Geofisica	Portugal	Record high maximum temperature	42.0 C (107.6 F)	42 of 100 (Notable)
Durham	United States	Record daily precipitation	46.0 mm (1.8 in)	42 of 100 (Notable)
Dutch Harbor	United States	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Otter Brook Lake	United States	Record daily precipitation	43.7 mm (1.7 in)	41 of 100 (Notable)
Pogranichnyj	Russia	Record daily precipitation	42.5 mm (1.7 in)	40 of 100 (Notable)
Enisejsk	Russia	Record low minimum temperature	2.3 C (36.1 F)	39 of 100 (Notable)
Duolun	China	Record high minimum temperature	20.7 C (69.3 F)	37 of 100 (Notable)
Lyon - St Exupery	France	Record high minimum temperature	23.0 C (73.4 F)	37 of 100 (Notable)
Kurnool	India	Record daily precipitation	72.9 mm (2.9 in)	37 of 100 (Notable)
Cobleskill 2 ESE	United States	Record daily precipitation	61.2 mm (2.4 in)	37 of 100 (Notable)
Glenmoore	United States	Record daily precipitation	77.7 mm (3.1 in)	37 of 100 (Notable)
Heinersreuth-Vollhof	Germany	Record high minimum temperature	18.9 C (66.0 F)	36 of 100 (Notable)
Mtn Grove	United States	Record daily precipitation	39.4 mm (1.6 in)	36 of 100 (Notable)
Pearisburg 4 SSE	United States	Record daily precipitation	59.9 mm (2.4 in)	36 of 100 (Notable)
Vigo Peinador	Spain	Record high minimum temperature	24.9 C (76.8 F)	35 of 100 (Notable)
Reus/Aeropuerto	Spain	Record high maximum temperature	39.8 C (103.6 F)	35 of 100 (Notable)
Zuerich/Fluntern	Switzerland	Record high minimum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Albany	Australia	Record low maximum temperature	11.8 C (53.2 F)	34 of 100 (Routine)
Beijing	China	Record high minimum temperature	27.4 C (81.3 F)	34 of 100 (Routine)
Montabaur	Germany	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Vastvalla	Sweden	Record daily precipitation	37.5 mm (1.5 in)	34 of 100 (Routine)
Gull Lake Dam	United States	Record daily precipitation	55.1 mm (2.2 in)	34 of 100 (Routine)
Pingelly	Australia	Record daily precipitation	26.4 mm (1.0 in)	33 of 100 (Routine)
Sortavala	Russia	Record daily precipitation	62.0 mm (2.4 in)	33 of 100 (Routine)
Barcelona/Aeropuerto	Spain	Record high maximum temperature	37.0 C (98.6 F)	33 of 100 (Routine)

Counts by Type and Timescale

760 records

Records set or tied on 4 August 2018 by type: Highest daily maximum 159, Lowest daily maximum 48, Highest daily minimum 261, Lowest daily minimum 57, Heaviest daily rainfall 235.

Records on 4 August 2018 by type
Record type	Records
Highest daily maximum	159
Lowest daily maximum	48
Highest daily minimum	261
Lowest daily minimum	57
Heaviest daily rainfall	235
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 August 2018 by timescale: all-time 12, monthly 22, daily 726.

How Much Records Were Beaten By

624 broken records

Margins by which the 624 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 65.4. Ties are not counted.

Top 20 by Significance

4 August 2018

Top 20 records on 4 August 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 August 2018	Perpignan, FR	all-time high min	30.3 C (86.5 F)	3.3 C (5.9 F)	84 years	68 of 100 (Major)
4 August 2018	Millinocket Muni AP, US	daily rain	69.3 mm (2.7 in)	46.2 mm (1.8 in)	64 years	66 of 100 (Major)
4 August 2018	Partizansk, RU	daily rain	105.9 mm (4.2 in)	65.4 mm (2.6 in)	65 years	65 of 100 (Major)
4 August 2018	Murray Lagoon (Hawks Nest), AU	daily rain	48.0 mm (1.9 in)	22.1 mm (0.9 in)	44 years	63 of 100 (Major)
4 August 2018	Segeza, RU	daily rain	47.8 mm (1.9 in)	35.9 mm (1.4 in)	52 years	62 of 100 (Major)
4 August 2018	Medvezegorsk, RU	daily rain	48.0 mm (1.9 in)	30.0 mm (1.2 in)	52 years	62 of 100 (Major)
4 August 2018	Glens Falls AP, US	daily rain	61.2 mm (2.4 in)	42.1 mm (1.7 in)	64 years	61 of 100 (Major)
4 August 2018	Goychay, AZ	monthly rain	99.3 mm (3.9 in)	32.1 mm (1.3 in)	35 years	59 of 100 (Notable)
4 August 2018	Burracoppin, AU	daily rain	25.4 mm (1.0 in)	12.2 mm (0.5 in)	68 years	55 of 100 (Notable)
4 August 2018	Svijagino, RU	daily rain	74.1 mm (2.9 in)	39.5 mm (1.6 in)	47 years	54 of 100 (Notable)
4 August 2018	Youanmi Valley, AU	daily rain	28.4 mm (1.1 in)	23.0 mm (0.9 in)	27 years	53 of 100 (Notable)
4 August 2018	Spring Grove, US	daily rain	72.4 mm (2.9 in)	41.9 mm (1.6 in)	48 years	52 of 100 (Notable)
4 August 2018	Dalyup Park, AU	daily rain	25.2 mm (1.0 in)	7.2 mm (0.28 in)	108 years	51 of 100 (Notable)
4 August 2018	Crooked Rvr (Crooked River (Ha, AU	daily rain	38.0 mm (1.5 in)	24.3 mm (1.0 in)	48 years	51 of 100 (Notable)
4 August 2018	Codg Codgen, AU	daily rain	27.0 mm (1.1 in)	10.5 mm (0.4 in)	55 years	49 of 100 (Notable)
4 August 2018	Liberty 1 NE, US	daily rain	53.8 mm (2.1 in)	14.2 mm (0.6 in)	115 years	49 of 100 (Notable)
4 August 2018	Cincinnati Muni AP Lunken Fld, US	daily rain	80.0 mm (3.1 in)	52.8 mm (2.1 in)	8 years	49 of 100 (Notable)
4 August 2018	Greifswalder Oie, DE	daily high max	28.7 C (83.7 F)	4.7 C (8.5 F)	71 years	48 of 100 (Notable)
4 August 2018	Lock Haven Sewage Plt, US	daily rain	76.2 mm (3.0 in)	36.8 mm (1.4 in)	40 years	48 of 100 (Notable)
4 August 2018	Yakutat AP, US	monthly high min	15.0 C (59.0 F)	0.6 C (1.1 F)	86 years	48 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 2018

Records set or tied on this calendar date in each year from 1815 to 2018. 2018 had 760 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 2018-08-04: 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 10	549
10 to 20	44
20 to 30	10
30 to 40	13
40 to 50	4
50 to 60	3
60 to 70	1