Weather Records on 18 August 1930

150 weather records were set or tied worldwide on 18 August 1930. Highest significance: Bathurst, CA.

Key Facts for 18 August 1930

On 18 August 1930, 150 weather records were set or tied at long-record stations worldwide.
65 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 144 daily.
Bathurst set a daily record precipitation of 61.0 mm (2.4 in) on 18 August 1930.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 443 records.

Record Map

150 stations

150 station records on 18 August 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bathurst	Canada	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Forestburg 4 NNE	United States	Record daily precipitation	90.2 mm (3.6 in)	37 of 100 (Notable)
Pointe Au Pere	Canada	Record low maximum temperature	7.8 C (46.0 F)	28 of 100 (Routine)
Poretskoye	Russia	Record high maximum temperature	37.7 C (99.9 F)	28 of 100 (Routine)
Lawrence	United States	Record daily precipitation	49.3 mm (1.9 in)	28 of 100 (Routine)
Zametchino	Russia	Record high minimum temperature	18.9 C (66.0 F)	27 of 100 (Routine)
Vincennes 4 E	United States	Record daily precipitation	55.9 mm (2.2 in)	25 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record daily precipitation	35.6 mm (1.4 in)	24 of 100 (Routine)
Blair	United States	Record daily precipitation	39.1 mm (1.5 in)	24 of 100 (Routine)
Mt Carmel	United States	Record daily precipitation	25.1 mm (1.0 in)	22 of 100 (Routine)
Mitchell 2 N	United States	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Bucuresti Filaret	Romania	Record daily precipitation	14.9 mm (0.6 in)	20 of 100 (Routine)
Kristianstad	Sweden	Record high minimum temperature	15.5 C (59.9 F)	20 of 100 (Routine)
Carthage	United States	Record daily precipitation	50.8 mm (2.0 in)	20 of 100 (Routine)
Saskatoon Diefenbaker Int'l A	Canada	Record high minimum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Conception	United States	Record daily precipitation	32.0 mm (1.3 in)	19 of 100 (Routine)
Trawalla	Australia	Record daily precipitation	10.9 mm (0.4 in)	18 of 100 (Routine)
Fort St James	Canada	Record daily precipitation	12.2 mm (0.5 in)	18 of 100 (Routine)
Dublin Phoenix Park	Ireland	Record daily precipitation	24.2 mm (1.0 in)	18 of 100 (Routine)
Kon-Kolodez	Russia	Record high maximum temperature	36.1 C (97.0 F)	18 of 100 (Routine)
Cherdyn'	Russia	Record high minimum temperature	20.3 C (68.5 F)	18 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high maximum temperature	34.5 C (94.1 F)	18 of 100 (Routine)
Tunis	Tunisia	Record low maximum temperature	26.0 C (78.8 F)	18 of 100 (Routine)
Wartook Post Office	Australia	Record daily precipitation	9.4 mm (0.37 in)	17 of 100 (Routine)
Clyde State School	Australia	Record daily precipitation	17.5 mm (0.7 in)	17 of 100 (Routine)
Chicoutimi	Canada	Record low maximum temperature	15.6 C (60.1 F)	17 of 100 (Routine)
Arnsberg	Germany	Record low minimum temperature	6.9 C (44.4 F)	17 of 100 (Routine)
Elatma	Russia	Record high minimum temperature	19.7 C (67.5 F)	17 of 100 (Routine)
Cape Town Fire Station	South Africa	Record daily precipitation	11.7 mm (0.5 in)	17 of 100 (Routine)
Mt Vernon 3 NE	United States	Record daily precipitation	78.7 mm (3.1 in)	17 of 100 (Routine)
Grand Coteau	United States	Record low minimum temperature	20.0 C (68.0 F)	17 of 100 (Routine)
Hvar	Croatia	Record low minimum temperature	15.0 C (59.0 F)	16 of 100 (Routine)
Kamennaja-Step	Russia	Record high maximum temperature	35.4 C (95.7 F)	16 of 100 (Routine)
Decatur	United States	Record daily precipitation	27.7 mm (1.1 in)	16 of 100 (Routine)
Oakland	United States	Record high minimum temperature	15.0 C (59.0 F)	16 of 100 (Routine)
Mellette 4 W	United States	Record daily precipitation	40.6 mm (1.6 in)	16 of 100 (Routine)
Paris	United States	Record high minimum temperature	26.7 C (80.1 F)	16 of 100 (Routine)
Kansas City	United States	Record daily precipitation	39.4 mm (1.6 in)	16 of 100 (Routine)
Pomonal Windy Ridge	Australia	Record daily precipitation	12.2 mm (0.5 in)	15 of 100 (Routine)
Willaura (Yarram Park)	Australia	Record daily precipitation	7.6 mm (0.30 in)	15 of 100 (Routine)
Sorell (Whitlea)	Australia	Record daily precipitation	12.2 mm (0.5 in)	15 of 100 (Routine)
Innsbruck	Austria	Record low minimum temperature	6.2 C (43.2 F)	15 of 100 (Routine)
Tot-Ma	Russia	Record high minimum temperature	17.5 C (63.5 F)	15 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record high minimum temperature	12.0 C (53.6 F)	15 of 100 (Routine)
Sveg	Sweden	Record high minimum temperature	12.5 C (54.5 F)	15 of 100 (Routine)
Clanton	United States	Record daily precipitation	23.4 mm (0.9 in)	15 of 100 (Routine)
Decorah	United States	Record low minimum temperature	6.7 C (44.1 F)	15 of 100 (Routine)
Williamsburg 2	United States	Record low minimum temperature	12.8 C (55.0 F)	15 of 100 (Routine)
Wonwondah (Mount Zero)	Australia	Record daily precipitation	8.4 mm (0.33 in)	14 of 100 (Routine)
Ballarat Botanical Gardens	Australia	Record daily precipitation	10.4 mm (0.4 in)	14 of 100 (Routine)
Bagdad	Australia	Record daily precipitation	9.1 mm (0.36 in)	14 of 100 (Routine)
Prince Albert	Canada	Record high minimum temperature	16.7 C (62.1 F)	14 of 100 (Routine)
Andenes	Norway	Record high minimum temperature	15.1 C (59.2 F)	14 of 100 (Routine)
Boras	Sweden	Record high minimum temperature	14.5 C (58.1 F)	14 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	13.9 C (57.0 F)	14 of 100 (Routine)
Clarinda	United States	Record low maximum temperature	22.2 C (72.0 F)	14 of 100 (Routine)
Moncure 3 SE	United States	Record low maximum temperature	25.6 C (78.1 F)	14 of 100 (Routine)
Rosebud	United States	Record low maximum temperature	23.3 C (73.9 F)	14 of 100 (Routine)
Crosbyton	United States	Record daily precipitation	22.9 mm (0.9 in)	14 of 100 (Routine)
El Paso	United States	Record high maximum temperature	37.2 C (99.0 F)	14 of 100 (Routine)

Counts by Type and Timescale

150 records

Records set or tied on 18 August 1930 by type: Highest daily maximum 13, Lowest daily maximum 18, Highest daily minimum 52, Lowest daily minimum 16, Heaviest daily rainfall 51.

Records on 18 August 1930 by type
Record type	Records
Highest daily maximum	13
Lowest daily maximum	18
Highest daily minimum	52
Lowest daily minimum	16
Heaviest daily rainfall	51
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1930 by timescale: all-time 0, monthly 6, daily 144.

How Much Records Were Beaten By

113 broken records

Margins by which the 113 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 30.5. Ties are not counted.

Top 20 by Significance

18 August 1930

Top 20 records on 18 August 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1930	Bathurst, CA	daily rain	61.0 mm (2.4 in)	30.5 mm (1.2 in)	36 years	38 of 100 (Notable)
18 August 1930	Forestburg 4 NNE, US	monthly rain	90.2 mm (3.6 in)	25.4 mm (1.0 in)	9 years	37 of 100 (Notable)
18 August 1930	Pointe Au Pere, CA	monthly low max	7.8 C (46.0 F)	0.5 C (0.9 F)	41 years	28 of 100 (Routine)
18 August 1930	Poretskoye, RU	daily high max	37.7 C (99.9 F)	8.0 C (14.4 F)	35 years	28 of 100 (Routine)
18 August 1930	Lawrence, US	daily rain	49.3 mm (1.9 in)	17.8 mm (0.7 in)	33 years	28 of 100 (Routine)
18 August 1930	Zametchino, RU	daily high min	18.9 C (66.0 F)	3.9 C (7.0 F)	39 years	27 of 100 (Routine)
18 August 1930	Vincennes 4 E, US	monthly rain	55.9 mm (2.2 in)	5.1 mm (0.20 in)	28 years	25 of 100 (Routine)
18 August 1930	Tuscaloosa Oliver Dam, US	daily rain	35.6 mm (1.4 in)	16.5 mm (0.6 in)	28 years	24 of 100 (Routine)
18 August 1930	Blair, US	daily rain	39.1 mm (1.5 in)	23.6 mm (0.9 in)	19 years	24 of 100 (Routine)
18 August 1930	Mt Carmel, US	daily rain	25.1 mm (1.0 in)	14.9 mm (0.6 in)	23 years	22 of 100 (Routine)
18 August 1930	Mitchell 2 N, US	daily rain	23.4 mm (0.9 in)	19.3 mm (0.8 in)	28 years	20 of 100 (Routine)
18 August 1930	Bucuresti Filaret, RO	daily rain	14.9 mm (0.6 in)	9.2 mm (0.36 in)	33 years	20 of 100 (Routine)
18 August 1930	Kristianstad, SE	daily high min	15.5 C (59.9 F)	0.5 C (0.9 F)	47 years	20 of 100 (Routine)
18 August 1930	Carthage, US	daily rain	50.8 mm (2.0 in)	22.1 mm (0.9 in)	13 years	20 of 100 (Routine)
18 August 1930	Saskatoon Diefenbaker Int'l A, CA	daily high min	17.8 C (64.0 F)	3.4 C (6.1 F)	24 years	19 of 100 (Routine)
18 August 1930	Conception, US	daily rain	32.0 mm (1.3 in)	14.7 mm (0.6 in)	24 years	19 of 100 (Routine)
18 August 1930	Trawalla, AU	daily rain	10.9 mm (0.4 in)	6.8 mm (0.27 in)	4 years	18 of 100 (Routine)
18 August 1930	Fort St James, CA	daily rain	12.2 mm (0.5 in)	3.6 mm (0.14 in)	24 years	18 of 100 (Routine)
18 August 1930	Dublin Phoenix Park, IE	daily rain	24.2 mm (1.0 in)	2.9 mm (0.11 in)	27 years	18 of 100 (Routine)
18 August 1930	Kon-Kolodez, RU	daily high max	36.1 C (97.0 F)	3.8 C (6.8 F)	28 years	18 of 100 (Routine)

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

1797 to 1930

Records set or tied on this calendar date in each year from 1797 to 1930. 1930 had 150 records.

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

Records on 08-18 in each year
Year	Records
1797	2
1805	1
1816	1
1827	1
1829	1
1830	1
1833	1
1841	1
1844	1
1845	3
1846	1
1847	1
1849	1
1851	1
1852	1
1853	1
1854	2
1855	1
1856	1
1861	1
1864	2
1866	1
1868	2
1869	1
1870	2
1872	1
1873	1
1875	3
1876	1
1878	1
1879	2
1883	3
1885	3
1886	3
1887	3
1888	2
1889	1
1890	1
1891	2
1892	6
1893	4
1894	4
1895	1
1898	4
1899	6
1900	2
1901	10
1902	8
1903	6
1904	8
1905	10
1906	40
1907	7
1908	21
1909	24
1910	16
1911	11
1912	21
1913	43
1914	37
1915	60
1916	71
1917	70
1918	53
1919	34
1920	51
1921	39
1922	129
1923	90
1924	225
1925	300
1926	168
1927	269
1928	141
1929	181
1930	150
1931	241
1932	382
1933	431
1934	638
1935	424
1936	766
1937	308
1938	243
1939	381
1940	434
1941	467
1942	333
1943	738
1944	325
1945	400
1946	416
1947	958
1948	315
1949	393
1950	683
1951	355
1952	405
1953	323
1954	622
1955	795
1956	580
1957	380
1958	580
1959	537
1960	599
1961	415
1962	428
1963	760
1964	443
1965	525
1966	573
1967	623
1968	795
1969	530
1970	597
1971	381
1972	493
1973	734
1974	639
1975	844
1976	917
1977	1,112
1978	854
1979	1,309
1980	771
1981	1,386
1982	563
1983	1,420
1984	600
1985	765
1986	861
1987	1,609
1988	1,351
1989	952
1990	920
1991	533
1992	1,497
1993	706
1994	1,027
1995	1,882
1996	760
1997	1,191
1998	923
1999	888
2000	1,183
2001	1,036
2002	1,306
2003	860
2004	1,050
2005	865
2006	842
2007	1,116
2008	1,265
2009	839
2010	1,167
2011	1,239
2012	1,247
2013	752
2014	751
2015	880
2016	704
2017	565
2018	462
2019	615
2020	1,541
2021	1,118
2022	1,237
2023	1,094
2024	696
2025	455
2026	545

Download the Data

Data for records on 1930-08-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	90
5 to 10	11
10 to 15	5
15 to 20	3
20 to 25	2
25 to 30	1
30 to 35	1