Weather Records on 30 August 2018

616 weather records were set or tied worldwide on 30 August 2018. Highest significance: Forest Grove, AU.

Key Facts for 30 August 2018

On 30 August 2018, 616 weather records were set or tied at long-record stations worldwide.
375 were record highs and 94 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 18 monthly and 597 daily.
Forest Grove set a daily record precipitation of 62.0 mm (2.4 in) on 30 August 2018.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 422 records.

Record Map

616 stations

616 station records on 30 August 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Forest Grove	Australia	Record daily precipitation	62.0 mm (2.4 in)	73 of 100 (Major)
Moran	United States	Record daily precipitation	103.6 mm (4.1 in)	70 of 100 (Major)
Cowaramup	Australia	Record daily precipitation	56.8 mm (2.2 in)	58 of 100 (Notable)
Mansfield	United States	Record daily precipitation	79.5 mm (3.1 in)	58 of 100 (Notable)
Adelaide West Terrace	Australia	Record high minimum temperature	19.2 C (66.6 F)	56 of 100 (Notable)
Middleboro	United States	Record high minimum temperature	23.9 C (75.0 F)	53 of 100 (Notable)
Margaret River	Australia	Record daily precipitation	64.2 mm (2.5 in)	52 of 100 (Notable)
Ny-Alesund	Norway	Record daily precipitation	35.8 mm (1.4 in)	52 of 100 (Notable)
Middlebourne 3 ESE	United States	Record daily precipitation	62.7 mm (2.5 in)	51 of 100 (Notable)
Shantou	China	Record daily precipitation	223.3 mm (8.8 in)	50 of 100 (Notable)
Parks 6 ENE	United States	Record daily precipitation	59.7 mm (2.4 in)	50 of 100 (Notable)
Kealakekua 26.2	United States	Record high minimum temperature	20.6 C (69.1 F)	50 of 100 (Notable)
Orrefors_D	Sweden	Record daily precipitation	36.7 mm (1.4 in)	49 of 100 (Notable)
Westermarkelsdorf/Fehmarn	Germany	Record daily precipitation	35.6 mm (1.4 in)	48 of 100 (Notable)
Korsberga	Sweden	Record daily precipitation	42.4 mm (1.7 in)	48 of 100 (Notable)
Waverly	United States	Record high maximum temperature	36.1 C (97.0 F)	47 of 100 (Notable)
Pt Mugu Nf	United States	Record low minimum temperature	5.6 C (42.1 F)	47 of 100 (Notable)
Hoboksar	China	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Karlskrona-Soderstj.	Sweden	Record daily precipitation	77.1 mm (3.0 in)	45 of 100 (Notable)
Rorsbo	Sweden	Record daily precipitation	39.4 mm (1.6 in)	45 of 100 (Notable)
Nogliki	Russia	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
Punta Gorda 4 ESE	United States	Record low minimum temperature	16.1 C (61.0 F)	44 of 100 (Notable)
Monroe City	United States	Record low maximum temperature	22.8 C (73.0 F)	44 of 100 (Notable)
Flemington 5 NNW	United States	Record high minimum temperature	22.8 C (73.0 F)	44 of 100 (Notable)
Parafield Airport	Australia	Record high minimum temperature	18.4 C (65.1 F)	43 of 100 (Notable)
Waynesville 2 W	United States	Record daily precipitation	98.6 mm (3.9 in)	43 of 100 (Notable)
Morrisville 6 SW	United States	Record daily precipitation	57.2 mm (2.3 in)	43 of 100 (Notable)
Miami	United States	Record daily precipitation	57.4 mm (2.3 in)	43 of 100 (Notable)
Melo	Uruguay	Record daily precipitation	71.1 mm (2.8 in)	43 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record high maximum temperature	35.6 C (96.1 F)	42 of 100 (Notable)
Hassleby	Sweden	Record daily precipitation	32.7 mm (1.3 in)	42 of 100 (Notable)
Omaha	United States	Record daily precipitation	75.4 mm (3.0 in)	42 of 100 (Notable)
Cape May 2 NW	United States	Record high minimum temperature	25.0 C (77.0 F)	42 of 100 (Notable)
Sussex 1 NW	United States	Record high minimum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Skedemosse	Sweden	Record daily precipitation	53.0 mm (2.1 in)	41 of 100 (Notable)
Ottawa	United States	Record daily precipitation	38.9 mm (1.5 in)	41 of 100 (Notable)
Long Branch-Oakhurst	United States	Record high minimum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Ridgway	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record low minimum temperature	1.0 C (33.8 F)	40 of 100 (Notable)
John Redmond Lake	United States	Record daily precipitation	58.7 mm (2.3 in)	40 of 100 (Notable)
Springfield	United States	Record daily precipitation	66.0 mm (2.6 in)	40 of 100 (Notable)
Long Branch-Oakhurst	United States	Record high maximum temperature	36.1 C (97.0 F)	39 of 100 (Notable)
Juana Diaz Camp	Puerto Rico [United States]	Record daily precipitation	86.4 mm (3.4 in)	38 of 100 (Notable)
Uniontown	United States	Record daily precipitation	58.4 mm (2.3 in)	37 of 100 (Notable)
Five Points 5 SSW	United States	Record low minimum temperature	6.7 C (44.1 F)	37 of 100 (Notable)
Council Grove Lake	United States	Record daily precipitation	39.6 mm (1.6 in)	37 of 100 (Notable)
Hamburg	United States	Record high minimum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Paso de Los Toros	Uruguay	Record daily precipitation	61.2 mm (2.4 in)	37 of 100 (Notable)
Danville	United States	Record daily precipitation	37.6 mm (1.5 in)	36 of 100 (Notable)
Sines Deep Creek	United States	Record high minimum temperature	18.3 C (64.9 F)	36 of 100 (Notable)
Auburn	United States	Record daily precipitation	37.3 mm (1.5 in)	36 of 100 (Notable)
Brest-Guipavas	France	Record low minimum temperature	6.4 C (43.5 F)	35 of 100 (Notable)
Makkaur Fyr	Norway	Record high minimum temperature	14.9 C (58.8 F)	35 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record low maximum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Amberley AMO	Australia	Record low minimum temperature	-1.5 C (29.3 F)	34 of 100 (Routine)
East Sale Airport	Australia	Record low minimum temperature	-4.2 C (24.4 F)	34 of 100 (Routine)
Woodland	United States	Record high minimum temperature	22.8 C (73.0 F)	34 of 100 (Routine)
Versailles	United States	Record low maximum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Charlotteburg Rsvr	United States	Record high minimum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Yongala	Australia	Record high minimum temperature	13.7 C (56.7 F)	33 of 100 (Routine)

Counts by Type and Timescale

616 records

Records set or tied on 30 August 2018 by type: Highest daily maximum 87, Lowest daily maximum 18, Highest daily minimum 288, Lowest daily minimum 76, Heaviest daily rainfall 147.

Records on 30 August 2018 by type
Record type	Records
Highest daily maximum	87
Lowest daily maximum	18
Highest daily minimum	288
Lowest daily minimum	76
Heaviest daily rainfall	147
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 2018 by timescale: all-time 1, monthly 18, daily 597.

How Much Records Were Beaten By

471 broken records

Margins by which the 471 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 111.3. Ties are not counted.

Top 20 by Significance

30 August 2018

Top 20 records on 30 August 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 2018	Forest Grove, AU	daily rain	62.0 mm (2.4 in)	41.7 mm (1.6 in)	83 years	73 of 100 (Major)
30 August 2018	Moran, US	daily rain	103.6 mm (4.1 in)	72.6 mm (2.9 in)	73 years	70 of 100 (Major)
30 August 2018	Cowaramup, AU	daily rain	56.8 mm (2.2 in)	32.4 mm (1.3 in)	44 years	58 of 100 (Notable)
30 August 2018	Mansfield, US	daily rain	79.5 mm (3.1 in)	54.1 mm (2.1 in)	28 years	58 of 100 (Notable)
30 August 2018	Adelaide West Terrace, AU	monthly high min	19.2 C (66.6 F)	2.3 C (4.1 F)	90 years	56 of 100 (Notable)
30 August 2018	Middleboro, US	daily high min	23.9 C (75.0 F)	5.6 C (10.1 F)	119 years	53 of 100 (Notable)
30 August 2018	Margaret River, AU	daily rain	64.2 mm (2.5 in)	46.0 mm (1.8 in)	11 years	52 of 100 (Notable)
30 August 2018	Ny-Alesund, NO	daily rain	35.8 mm (1.4 in)	20.2 mm (0.8 in)	28 years	52 of 100 (Notable)
30 August 2018	Middlebourne 3 ESE, US	daily rain	62.7 mm (2.5 in)	39.3 mm (1.5 in)	44 years	51 of 100 (Notable)
30 August 2018	Shantou, CN	daily rain	223.3 mm (8.8 in)	111.3 mm (4.4 in)	16 years	50 of 100 (Notable)
30 August 2018	Parks 6 ENE, US	daily rain	59.7 mm (2.4 in)	41.9 mm (1.6 in)	44 years	50 of 100 (Notable)
30 August 2018	Kealakekua 26.2, US	daily high min	20.6 C (69.1 F)	1.2 C (2.2 F)	107 years	50 of 100 (Notable)
30 August 2018	Orrefors_D, SE	daily rain	36.7 mm (1.4 in)	21.7 mm (0.9 in)	48 years	49 of 100 (Notable)
30 August 2018	Westermarkelsdorf/Fehmarn, DE	daily rain	35.6 mm (1.4 in)	22.7 mm (0.9 in)	21 years	48 of 100 (Notable)
30 August 2018	Korsberga, SE	daily rain	42.4 mm (1.7 in)	17.2 mm (0.7 in)	63 years	48 of 100 (Notable)
30 August 2018	Waverly, US	daily high max	36.1 C (97.0 F)	2.8 C (5.0 F)	117 years	47 of 100 (Notable)
30 August 2018	Pt Mugu Nf, US	monthly low min	5.6 C (42.1 F)	2.2 C (4.0 F)	70 years	47 of 100 (Notable)
30 August 2018	Hoboksar, CN	daily rain	25.4 mm (1.0 in)	12.3 mm (0.5 in)	16 years	45 of 100 (Notable)
30 August 2018	Karlskrona-Soderstj., SE	all-time rain	77.1 mm (3.0 in)	12.4 mm (0.5 in)	4 years	45 of 100 (Notable)
30 August 2018	Rorsbo, SE	daily rain	39.4 mm (1.6 in)	17.6 mm (0.7 in)	37 years	45 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

1806 to 2018

Records set or tied on this calendar date in each year from 1806 to 2018. 2018 had 616 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 2018-08-30: 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	446
20 to 40	14
40 to 60	9
60 to 80	1
80 to 100	0
100 to 120	1