Weather Records on 15 August 1929

586 weather records were set or tied worldwide on 15 August 1929. Highest significance: Portland, US.

Key Facts for 15 August 1929

On 15 August 1929, 586 weather records were set or tied at long-record stations worldwide.
60 were record highs and 455 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 580 daily.
Portland set a daily record precipitation of 37.3 mm (1.5 in) on 15 August 1929.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 454 records.

Record Map

586 stations

586 station records on 15 August 1929 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Portland	United States	Record daily precipitation	37.3 mm (1.5 in)	35 of 100 (Notable)
Black River	Australia	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Bic	Canada	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Louisville	United States	Record low minimum temperature	11.1 C (52.0 F)	34 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
Mena	United States	Record low minimum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Stratford	Canada	Record low maximum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Doberlug-Kirchhain	Germany	Record daily precipitation	27.4 mm (1.1 in)	29 of 100 (Routine)
Madison	United States	Record low minimum temperature	13.3 C (55.9 F)	29 of 100 (Routine)
Waterville Wwtp	United States	Record daily precipitation	32.0 mm (1.3 in)	29 of 100 (Routine)
Danville 2 SE	United States	Record daily precipitation	68.8 mm (2.7 in)	29 of 100 (Routine)
Lyndoch	Australia	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Bathurst Gaol	Australia	Record high maximum temperature	21.7 C (71.1 F)	28 of 100 (Routine)
Austin	United States	Record low minimum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Chattanooga Wb City	United States	Record low minimum temperature	15.6 C (60.1 F)	28 of 100 (Routine)
Pointe Au Pere	Canada	Record daily precipitation	38.1 mm (1.5 in)	27 of 100 (Routine)
Blanco	United States	Record low minimum temperature	15.0 C (59.0 F)	27 of 100 (Routine)
Woodstock	Canada	Record low maximum temperature	15.0 C (59.0 F)	26 of 100 (Routine)
Duck Hill	United States	Record low minimum temperature	9.4 C (48.9 F)	26 of 100 (Routine)
Holly Springs 2 N	United States	Record low minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Birch Tree	United States	Record low minimum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Meeker 5 W	United States	Record low minimum temperature	12.2 C (54.0 F)	26 of 100 (Routine)
Quebec	Canada	Record daily precipitation	29.5 mm (1.2 in)	25 of 100 (Routine)
Bee Branch	United States	Record low minimum temperature	10.0 C (50.0 F)	25 of 100 (Routine)
Little Rock St Capitol	United States	Record low minimum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Stuttgart	United States	Record low minimum temperature	12.8 C (55.0 F)	25 of 100 (Routine)
Logan 1 WNW	United States	Record low minimum temperature	6.7 C (44.1 F)	25 of 100 (Routine)
Mt Ayr	United States	Record low minimum temperature	8.9 C (48.0 F)	25 of 100 (Routine)
Eubank	United States	Record low minimum temperature	8.3 C (46.9 F)	25 of 100 (Routine)
Trenton	United States	Record low minimum temperature	8.9 C (48.0 F)	25 of 100 (Routine)
Madison Wb City	United States	Record low minimum temperature	9.4 C (48.9 F)	25 of 100 (Routine)
Newport	United States	Record low minimum temperature	13.3 C (55.9 F)	24 of 100 (Routine)
Ames 3 SW	United States	Record low minimum temperature	6.7 C (44.1 F)	24 of 100 (Routine)
Guthrie Ctr	United States	Record low minimum temperature	5.0 C (41.0 F)	24 of 100 (Routine)
Malvern	United States	Record low minimum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Ozark	United States	Record low minimum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Clarinda	United States	Record low minimum temperature	6.7 C (44.1 F)	23 of 100 (Routine)
Forest City 2 NNE	United States	Record low minimum temperature	6.7 C (44.1 F)	23 of 100 (Routine)
Indianola 1SW	United States	Record low minimum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
Lenox	United States	Record low minimum temperature	9.4 C (48.9 F)	23 of 100 (Routine)
New Hampton	United States	Record low minimum temperature	4.4 C (39.9 F)	23 of 100 (Routine)
Gardiner	United States	Record daily precipitation	40.4 mm (1.6 in)	23 of 100 (Routine)
State UNIV	United States	Record low minimum temperature	13.9 C (57.0 F)	23 of 100 (Routine)
Granville	United States	Record low maximum temperature	20.6 C (69.1 F)	23 of 100 (Routine)
Enosburg Falls	United States	Record daily precipitation	31.0 mm (1.2 in)	23 of 100 (Routine)
Dubuque River	United States	Record low minimum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Lincoln UNIV Pwr Plt	United States	Record low minimum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Prescott 2 NNW	United States	Record low minimum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Subiaco	United States	Record low minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Cedar Rapids #1	United States	Record low minimum temperature	5.0 C (41.0 F)	22 of 100 (Routine)
Humboldt 3 W	United States	Record low minimum temperature	5.0 C (41.0 F)	22 of 100 (Routine)
Waterloo	United States	Record low minimum temperature	5.6 C (42.1 F)	22 of 100 (Routine)
Lawrence	United States	Record low minimum temperature	11.7 C (53.1 F)	22 of 100 (Routine)
Auburn 5 ESE	United States	Record low minimum temperature	5.6 C (42.1 F)	22 of 100 (Routine)
Beatrice	United States	Record low minimum temperature	8.9 C (48.0 F)	22 of 100 (Routine)
Tecumseh 1S	United States	Record low minimum temperature	5.6 C (42.1 F)	22 of 100 (Routine)
Ft Bayard 4W	United States	Record high minimum temperature	20.0 C (68.0 F)	22 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low maximum temperature	16.7 C (62.1 F)	22 of 100 (Routine)
Marion	United States	Record low maximum temperature	21.1 C (70.0 F)	22 of 100 (Routine)

Counts by Type and Timescale

586 records

Records set or tied on 15 August 1929 by type: Highest daily maximum 32, Lowest daily maximum 141, Highest daily minimum 28, Lowest daily minimum 314, Heaviest daily rainfall 71.

Records on 15 August 1929 by type
Record type	Records
Highest daily maximum	32
Lowest daily maximum	141
Highest daily minimum	28
Lowest daily minimum	314
Heaviest daily rainfall	71
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1929 by timescale: all-time 0, monthly 6, daily 580.

How Much Records Were Beaten By

495 broken records

Margins by which the 495 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 32.0. Ties are not counted.

Top 20 by Significance

15 August 1929

Top 20 records on 15 August 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1929	Portland, US	daily rain	37.3 mm (1.5 in)	16.2 mm (0.6 in)	55 years	35 of 100 (Notable)
15 August 1929	Black River, AU	daily rain	38.1 mm (1.5 in)	14.0 mm (0.6 in)	28 years	34 of 100 (Routine)
15 August 1929	Bic, CA	monthly rain	47.0 mm (1.9 in)	6.4 mm (0.25 in)	40 years	34 of 100 (Routine)
15 August 1929	Louisville, US	daily low min	11.1 C (52.0 F)	6.7 C (12.1 F)	3 years	34 of 100 (Routine)
15 August 1929	Walgett Council Depot, AU	daily high max	30.0 C (86.0 F)	4.4 C (7.9 F)	50 years	31 of 100 (Routine)
15 August 1929	Mena, US	daily low min	11.1 C (52.0 F)	4.5 C (8.1 F)	36 years	31 of 100 (Routine)
15 August 1929	Ladismith (Tnk), ZA	daily rain	26.2 mm (1.0 in)	9.9 mm (0.39 in)	37 years	30 of 100 (Routine)
15 August 1929	Stratford, CA	daily low max	15.6 C (60.1 F)	2.2 C (4.0 F)	62 years	29 of 100 (Routine)
15 August 1929	Doberlug-Kirchhain, DE	daily rain	27.4 mm (1.1 in)	11.4 mm (0.4 in)	4 years	29 of 100 (Routine)
15 August 1929	Madison, US	daily low min	13.3 C (55.9 F)	3.9 C (7.0 F)	30 years	29 of 100 (Routine)
15 August 1929	Waterville Wwtp, US	daily rain	32.0 mm (1.3 in)	22.1 mm (0.9 in)	28 years	29 of 100 (Routine)
15 August 1929	Danville 2 SE, US	daily rain	68.8 mm (2.7 in)	32.0 mm (1.3 in)	23 years	29 of 100 (Routine)
15 August 1929	Lyndoch, AU	daily rain	25.7 mm (1.0 in)	13.5 mm (0.5 in)	12 years	28 of 100 (Routine)
15 August 1929	Bathurst Gaol, AU	daily high max	21.7 C (71.1 F)	2.8 C (5.0 F)	44 years	28 of 100 (Routine)
15 August 1929	Austin, US	daily low min	14.4 C (57.9 F)	4.5 C (8.1 F)	30 years	28 of 100 (Routine)
15 August 1929	Chattanooga Wb City, US	daily low min	15.6 C (60.1 F)	2.2 C (4.0 F)	43 years	28 of 100 (Routine)
15 August 1929	Pointe Au Pere, CA	daily rain	38.1 mm (1.5 in)	9.1 mm (0.36 in)	34 years	27 of 100 (Routine)
15 August 1929	Blanco, US	daily low min	15.0 C (59.0 F)	3.9 C (7.0 F)	28 years	27 of 100 (Routine)
15 August 1929	Woodstock, CA	daily low max	15.0 C (59.0 F)	2.8 C (5.0 F)	49 years	26 of 100 (Routine)
15 August 1929	Duck Hill, US	daily low min	9.4 C (48.9 F)	6.2 C (11.2 F)	4 years	26 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

1793 to 1929

Records set or tied on this calendar date in each year from 1793 to 1929. 1929 had 586 records.

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

Records on 08-15 in each year
Year	Records
1793	2
1802	1
1805	1
1812	1
1821	1
1838	2
1839	1
1841	1
1844	1
1845	3
1852	1
1854	1
1856	1
1858	1
1861	3
1867	1
1868	2
1869	1
1873	2
1875	1
1876	2
1877	1
1878	1
1879	1
1880	3
1881	2
1882	2
1883	1
1884	2
1885	3
1886	1
1887	1
1888	3
1890	2
1891	2
1892	3
1893	3
1895	1
1896	9
1897	3
1898	1
1899	2
1900	6
1901	5
1902	10
1903	5
1904	17
1905	26
1906	8
1907	14
1908	15
1909	30
1910	16
1911	26
1912	34
1913	42
1914	11
1915	26
1916	223
1917	32
1918	23
1919	22
1920	59
1921	55
1922	86
1923	116
1924	220
1925	91
1926	115
1927	223
1928	271
1929	586
1930	274
1931	351
1932	368
1933	268
1934	992
1935	414
1936	867
1937	574
1938	681
1939	450
1940	372
1941	289
1942	377
1943	426
1944	610
1945	433
1946	285
1947	559
1948	366
1949	559
1950	317
1951	597
1952	596
1953	449
1954	481
1955	539
1956	390
1957	355
1958	1,092
1959	515
1960	417
1961	704
1962	1,052
1963	972
1964	1,185
1965	535
1966	340
1967	687
1968	1,002
1969	583
1970	382
1971	899
1972	613
1973	499
1974	512
1975	490
1976	1,345
1977	550
1978	841
1979	1,788
1980	745
1981	588
1982	479
1983	955
1984	622
1985	915
1986	1,283
1987	1,098
1988	1,479
1989	495
1990	758
1991	778
1992	1,638
1993	831
1994	1,073
1995	1,298
1996	929
1997	927
1998	861
1999	956
2000	932
2001	1,254
2002	1,307
2003	1,248
2004	1,424
2005	1,067
2006	923
2007	1,317
2008	964
2009	1,038
2010	1,622
2011	770
2012	654
2013	711
2014	583
2015	759
2016	707
2017	532
2018	328
2019	435
2020	1,327
2021	900
2022	692
2023	1,414
2024	729
2025	772
2026	975

Download the Data

Data for records on 1929-08-15: 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	440
5 to 10	41
10 to 15	10
15 to 20	1
20 to 25	2
25 to 30	0
30 to 35	1