Weather Records on 18 August 1929

181 weather records were set or tied worldwide on 18 August 1929. Highest significance: Armagh, GB.

Key Facts for 18 August 1929

On 18 August 1929, 181 weather records were set or tied at long-record stations worldwide.
40 were record highs and 70 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 179 daily.
Armagh set a daily record precipitation of 50.0 mm (2.0 in) on 18 August 1929.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 442 records.

Record Map

181 stations

181 station records on 18 August 1929 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Armagh	United Kingdom	Record daily precipitation	50.0 mm (2.0 in)	69 of 100 (Major)
Biggenden Post Office	Australia	Record daily precipitation	28.4 mm (1.1 in)	42 of 100 (Notable)
Kilkivan Post Office	Australia	Record daily precipitation	35.6 mm (1.4 in)	29 of 100 (Routine)
Roros	Norway	Record daily precipitation	29.3 mm (1.2 in)	28 of 100 (Routine)
Ruston la Tech	United States	Record low minimum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Hedrum	Norway	Record daily precipitation	65.0 mm (2.6 in)	25 of 100 (Routine)
Leakesville 6 WSW	United States	Record low minimum temperature	17.8 C (64.0 F)	24 of 100 (Routine)
Salisbury	United States	Record daily precipitation	56.4 mm (2.2 in)	24 of 100 (Routine)
Thomasville	United States	Record low minimum temperature	16.1 C (61.0 F)	23 of 100 (Routine)
Camden 1	United States	Record low minimum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Oktjabrskij-Gorodok	Russia	Record high maximum temperature	34.9 C (94.8 F)	21 of 100 (Routine)
Skjak	Norway	Record daily precipitation	20.2 mm (0.8 in)	20 of 100 (Routine)
Norddal	Norway	Record daily precipitation	24.5 mm (1.0 in)	20 of 100 (Routine)
Eidsvold Post Office	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Crows Nest	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Forest Hill	Australia	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Gin Gin Post Office	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Laidley Post Office	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Canning Downs	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
University of Queensland Gatto	Australia	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Gatton Allan Street	Australia	Record daily precipitation	12.4 mm (0.5 in)	20 of 100 (Routine)
Gigoomgan	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Cooyar Post Office	Australia	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)
Esk Post Office	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Gundiah Railway Station	Australia	Record daily precipitation	13.5 mm (0.5 in)	19 of 100 (Routine)
Gympie	Australia	Record daily precipitation	14.7 mm (0.6 in)	19 of 100 (Routine)
Jondaryan Post Office	Australia	Record daily precipitation	6.4 mm (0.25 in)	19 of 100 (Routine)
Odesa	Ukraine	Record high minimum temperature	23.4 C (74.1 F)	19 of 100 (Routine)
Childers Post Office	Australia	Record daily precipitation	17.3 mm (0.7 in)	18 of 100 (Routine)
Cleveland Bowls Club	Australia	Record daily precipitation	16.0 mm (0.6 in)	18 of 100 (Routine)
Mungar Junction	Australia	Record daily precipitation	12.7 mm (0.5 in)	18 of 100 (Routine)
Allora Post Office	Australia	Record daily precipitation	7.1 mm (0.28 in)	18 of 100 (Routine)
Goondiwindi Post Office	Australia	Record daily precipitation	6.1 mm (0.24 in)	18 of 100 (Routine)
Warwick Post Office	Australia	Record daily precipitation	8.9 mm (0.35 in)	18 of 100 (Routine)
Lake	United States	Record low minimum temperature	15.6 C (60.1 F)	18 of 100 (Routine)
Pontotoc	United States	Record low minimum temperature	16.1 C (61.0 F)	18 of 100 (Routine)
Yazoo City	United States	Record low minimum temperature	15.6 C (60.1 F)	18 of 100 (Routine)
Jefferson City Wtp	United States	Record low minimum temperature	13.3 C (55.9 F)	18 of 100 (Routine)
Zagreb-Gric	Croatia	Record high minimum temperature	20.6 C (69.1 F)	17 of 100 (Routine)
Uman	Ukraine	Record high minimum temperature	18.3 C (64.9 F)	17 of 100 (Routine)
Clinton Forestry HQ	United States	Record low minimum temperature	18.9 C (66.0 F)	17 of 100 (Routine)
Jackson Exp STN	United States	Record low minimum temperature	13.9 C (57.0 F)	17 of 100 (Routine)
Springsure Comet St	Australia	Record daily precipitation	4.6 mm (0.18 in)	16 of 100 (Routine)
Margate Collins St	Australia	Record daily precipitation	11.4 mm (0.4 in)	16 of 100 (Routine)
Cathcart	South Africa	Record daily precipitation	10.2 mm (0.4 in)	16 of 100 (Routine)
Kiev	Ukraine	Record high maximum temperature	32.2 C (90.0 F)	16 of 100 (Routine)
Ft Duchesne	United States	Record high minimum temperature	18.3 C (64.9 F)	16 of 100 (Routine)
Isis Junction Railway STN	Australia	Record daily precipitation	32.5 mm (1.3 in)	15 of 100 (Routine)
Dutton Park	Australia	Record daily precipitation	7.1 mm (0.28 in)	15 of 100 (Routine)
Killarney Post Office	Australia	Record daily precipitation	7.6 mm (0.30 in)	15 of 100 (Routine)
Toowoomba	Australia	Record daily precipitation	5.3 mm (0.21 in)	15 of 100 (Routine)
Vasilevici	Belarus	Record high minimum temperature	16.2 C (61.2 F)	15 of 100 (Routine)
Freiburg	Germany	Record daily precipitation	24.1 mm (0.9 in)	15 of 100 (Routine)
Newport	United States	Record low minimum temperature	14.4 C (57.9 F)	15 of 100 (Routine)
Subiaco	United States	Record low minimum temperature	16.7 C (62.1 F)	15 of 100 (Routine)
Duck Hill	United States	Record low minimum temperature	13.3 C (55.9 F)	15 of 100 (Routine)
Kosciusko	United States	Record low minimum temperature	15.6 C (60.1 F)	15 of 100 (Routine)
Port Gibson 1 NE	United States	Record low minimum temperature	16.1 C (61.0 F)	15 of 100 (Routine)
Milan Exp STN	United States	Record low minimum temperature	15.0 C (59.0 F)	15 of 100 (Routine)
Lafayette Rgnl AP	United States	Record low minimum temperature	20.6 C (69.1 F)	15 of 100 (Routine)

Counts by Type and Timescale

181 records

Records set or tied on 18 August 1929 by type: Highest daily maximum 19, Lowest daily maximum 4, Highest daily minimum 21, Lowest daily minimum 66, Heaviest daily rainfall 71.

Records on 18 August 1929 by type
Record type	Records
Highest daily maximum	19
Lowest daily maximum	4
Highest daily minimum	21
Lowest daily minimum	66
Heaviest daily rainfall	71
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1929 by timescale: all-time 0, monthly 2, daily 179.

How Much Records Were Beaten By

141 broken records

Margins by which the 141 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 29.0. Ties are not counted.

Top 20 by Significance

18 August 1929

Top 20 records on 18 August 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1929	Armagh, GB	daily rain	50.0 mm (2.0 in)	29.0 mm (1.1 in)	68 years	69 of 100 (Major)
18 August 1929	Biggenden Post Office, AU	daily rain	28.4 mm (1.1 in)	27.1 mm (1.1 in)	28 years	42 of 100 (Notable)
18 August 1929	Kilkivan Post Office, AU	daily rain	35.6 mm (1.4 in)	16.8 mm (0.7 in)	30 years	29 of 100 (Routine)
18 August 1929	Roros, NO	daily rain	29.3 mm (1.2 in)	13.9 mm (0.5 in)	4 years	28 of 100 (Routine)
18 August 1929	Ruston la Tech, US	daily low min	15.6 C (60.1 F)	3.3 C (5.9 F)	29 years	27 of 100 (Routine)
18 August 1929	Hedrum, NO	monthly rain	65.0 mm (2.6 in)	5.0 mm (0.20 in)	29 years	25 of 100 (Routine)
18 August 1929	Leakesville 6 WSW, US	daily low min	17.8 C (64.0 F)	2.2 C (4.0 F)	30 years	24 of 100 (Routine)
18 August 1929	Salisbury, US	daily rain	56.4 mm (2.2 in)	22.4 mm (0.9 in)	26 years	24 of 100 (Routine)
18 August 1929	Thomasville, US	daily low min	16.1 C (61.0 F)	2.8 C (5.0 F)	19 years	23 of 100 (Routine)
18 August 1929	Camden 1, US	daily low min	13.3 C (55.9 F)	2.8 C (5.0 F)	31 years	23 of 100 (Routine)
18 August 1929	Oktjabrskij-Gorodok, RU	daily high max	34.9 C (94.8 F)	4.9 C (8.8 F)	30 years	21 of 100 (Routine)
18 August 1929	Skjak, NO	daily rain	20.2 mm (0.8 in)	10.2 mm (0.4 in)	26 years	20 of 100 (Routine)
18 August 1929	Norddal, NO	daily rain	24.5 mm (1.0 in)	14.5 mm (0.6 in)	7 years	20 of 100 (Routine)
18 August 1929	Eidsvold Post Office, AU	daily rain	19.1 mm (0.8 in)	13.0 mm (0.5 in)	30 years	20 of 100 (Routine)
18 August 1929	Crows Nest, AU	daily rain	16.3 mm (0.6 in)	11.7 mm (0.5 in)	30 years	20 of 100 (Routine)
18 August 1929	Forest Hill, AU	daily rain	13.2 mm (0.5 in)	11.4 mm (0.4 in)	30 years	20 of 100 (Routine)
18 August 1929	Gin Gin Post Office, AU	daily rain	15.2 mm (0.6 in)	15.2 mm (0.6 in)	31 years	20 of 100 (Routine)
18 August 1929	Laidley Post Office, AU	daily rain	11.2 mm (0.4 in)	8.2 mm (0.32 in)	30 years	20 of 100 (Routine)
18 August 1929	Canning Downs, AU	daily rain	8.9 mm (0.35 in)	6.9 mm (0.27 in)	29 years	20 of 100 (Routine)
18 August 1929	University of Queensland Gatto, AU	daily rain	13.2 mm (0.5 in)	10.2 mm (0.4 in)	20 years	20 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 1929

Records set or tied on this calendar date in each year from 1797 to 1929. 1929 had 181 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 1929-08-18: 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	114
5 to 10	15
10 to 15	7
15 to 20	2
20 to 25	1
25 to 30	2