Weather Records on 15 May 1929

161 weather records were set or tied worldwide on 15 May 1929. Highest significance: Perth Regional Office, AU.

Key Facts for 15 May 1929

On 15 May 1929, 161 weather records were set or tied at long-record stations worldwide.
81 were record highs and 33 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 159 daily.
Perth Regional Office set a daily record precipitation of 34.8 mm (1.4 in) on 15 May 1929.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 432 records.

Record Map

161 stations

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

Weather records on 15 May 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Perth Regional Office	Australia	Record daily precipitation	34.8 mm (1.4 in)	29 of 100 (Routine)
Port Arthur	Canada	Record daily snowfall	11.2 cm (4.4 in)	29 of 100 (Routine)
Chattanooga Wb City	United States	Record daily precipitation	48.5 mm (1.9 in)	26 of 100 (Routine)
Moose Factory	Canada	Record daily snowfall	5.1 cm (2.0 in)	25 of 100 (Routine)
Hamilton	Canada	Record high minimum temperature	14.4 C (57.9 F)	25 of 100 (Routine)
Parkers Landing	United States	Record daily precipitation	29.2 mm (1.1 in)	23 of 100 (Routine)
Port Arthur	Canada	Record low maximum temperature	0.6 C (33.1 F)	22 of 100 (Routine)
Mellette 4 W	United States	Record daily snowfall	5.1 cm (2.0 in)	22 of 100 (Routine)
Houston Wb City	United States	Record daily precipitation	78.0 mm (3.1 in)	22 of 100 (Routine)
Lexington Bluegrass AP	United States	Record high minimum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Calgary Int'l A	Canada	Record low minimum temperature	-7.8 C (18.0 F)	21 of 100 (Routine)
Clinton	United States	Record daily precipitation	40.1 mm (1.6 in)	21 of 100 (Routine)
Smithfield (Mun)	South Africa	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Jhb-Joubert Park	South Africa	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Wolfville	Canada	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Bucyrus	United States	Record high minimum temperature	19.4 C (66.9 F)	20 of 100 (Routine)
Enosburg Falls	United States	Record daily precipitation	31.5 mm (1.2 in)	19 of 100 (Routine)
Yerevan	Armenia	Record daily precipitation	14.0 mm (0.6 in)	18 of 100 (Routine)
Mardie	Australia	Record daily precipitation	4.6 mm (0.18 in)	18 of 100 (Routine)
Swift Current	Canada	Record daily snowfall	1.0 cm (0.4 in)	18 of 100 (Routine)
Reit Im Winkl	Germany	Record daily precipitation	24.5 mm (1.0 in)	18 of 100 (Routine)
Glendive	United States	Record daily snowfall	2.5 cm (1.0 in)	18 of 100 (Routine)
Poplar 2 E	United States	Record daily snowfall	2.5 cm (1.0 in)	18 of 100 (Routine)
Granville	United States	Record daily precipitation	51.1 mm (2.0 in)	18 of 100 (Routine)
Green Bay	United States	Record low minimum temperature	-1.7 C (28.9 F)	18 of 100 (Routine)
Moose Jaw Chab	Canada	Record daily snowfall	0.8 cm (0.3 in)	17 of 100 (Routine)
Maysville Wwtp	United States	Record daily precipitation	9.7 mm (0.38 in)	17 of 100 (Routine)
Billings Wtp	United States	Record low minimum temperature	-3.3 C (26.1 F)	17 of 100 (Routine)
Charlotte Wb City	United States	Record daily precipitation	35.6 mm (1.4 in)	17 of 100 (Routine)
Columbus Ohio St UNIV	United States	Record daily precipitation	36.8 mm (1.4 in)	17 of 100 (Routine)
St Cloud State Clg	United States	Record daily snowfall	2.3 cm (0.9 in)	17 of 100 (Routine)
Gardiner	United States	Record daily precipitation	13.2 mm (0.5 in)	16 of 100 (Routine)
Pine Rvr Dam	United States	Record daily snowfall	2.5 cm (1.0 in)	16 of 100 (Routine)
Augusta	United States	Record low minimum temperature	-8.9 C (16.0 F)	16 of 100 (Routine)
Chinook	United States	Record low maximum temperature	7.8 C (46.0 F)	16 of 100 (Routine)
Dickinson Exp STN	United States	Record daily snowfall	3.3 cm (1.3 in)	16 of 100 (Routine)
Larimore 4SW	United States	Record low minimum temperature	-6.1 C (21.0 F)	16 of 100 (Routine)
Rogersville 1 NE	United States	Record daily precipitation	25.4 mm (1.0 in)	16 of 100 (Routine)
Fort Macleod	Canada	Record low minimum temperature	-3.9 C (25.0 F)	15 of 100 (Routine)
Bancroft	Canada	Record high minimum temperature	11.7 C (53.1 F)	15 of 100 (Routine)
La Monte	United States	Record daily precipitation	83.8 mm (3.3 in)	15 of 100 (Routine)
St Cloud State Clg	United States	Record snow depth	2.5 cm (1.0 in)	15 of 100 (Routine)
Fort Macleod	Canada	Record low maximum temperature	1.7 C (35.1 F)	14 of 100 (Routine)
Pushmataha	United States	Record high minimum temperature	20.6 C (69.1 F)	14 of 100 (Routine)
Hawkinsville	United States	Record high maximum temperature	36.7 C (98.1 F)	14 of 100 (Routine)
Old Mission	United States	Record high maximum temperature	29.4 C (84.9 F)	14 of 100 (Routine)
Bozeman Montana State UNIV	United States	Record low minimum temperature	-5.0 C (23.0 F)	14 of 100 (Routine)
Morganton	United States	Record high minimum temperature	18.9 C (66.0 F)	14 of 100 (Routine)
Waynesville 1 E	United States	Record high minimum temperature	16.1 C (61.0 F)	14 of 100 (Routine)
Cambridge St Hospital	United States	Record high minimum temperature	19.4 C (66.9 F)	14 of 100 (Routine)
Florence	United States	Record daily precipitation	54.4 mm (2.1 in)	14 of 100 (Routine)
Florence	United States	Record high minimum temperature	20.0 C (68.0 F)	13 of 100 (Routine)
Tuscumbia	United States	Record high minimum temperature	21.7 C (71.1 F)	13 of 100 (Routine)
Williamsburg 2	United States	Record daily precipitation	21.6 mm (0.9 in)	13 of 100 (Routine)
Brookhaven City	United States	Record high minimum temperature	21.1 C (70.0 F)	13 of 100 (Routine)
Miles City	United States	Record low maximum temperature	7.2 C (45.0 F)	13 of 100 (Routine)
Napoleon	United States	Record daily snowfall	1.3 cm (0.5 in)	13 of 100 (Routine)
Millport 4 NE	United States	Record high minimum temperature	16.1 C (61.0 F)	13 of 100 (Routine)
Union City	United States	Record high minimum temperature	18.3 C (64.9 F)	13 of 100 (Routine)
Runnymede Spottsville	United States	Record high minimum temperature	18.9 C (66.0 F)	13 of 100 (Routine)

Counts by Type and Timescale

161 records

Records set or tied on 15 May 1929 by type: Highest daily maximum 13, Lowest daily maximum 12, Highest daily minimum 68, Lowest daily minimum 21, Heaviest daily rainfall 34, Heaviest daily snowfall 12, Deepest snow cover 1.

Records on 15 May 1929 by type
Record type	Records
Highest daily maximum	13
Lowest daily maximum	12
Highest daily minimum	68
Lowest daily minimum	21
Heaviest daily rainfall	34
Heaviest daily snowfall	12
Deepest snow cover	1

Records on 15 May 1929 by timescale: all-time 0, monthly 2, daily 159.

How Much Records Were Beaten By

117 broken records

Margins by which the 117 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.0. Ties are not counted.

Top 20 by Significance

15 May 1929

Top 20 records on 15 May 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1929	Perth Regional Office, AU	daily rain	34.8 mm (1.4 in)	20.3 mm (0.8 in)	19 years	29 of 100 (Routine)
15 May 1929	Port Arthur, CA	monthly snowfall	11.2 cm (4.4 in)	1.8 cm (0.7 in)	37 years	29 of 100 (Routine)
15 May 1929	Chattanooga Wb City, US	daily rain	48.5 mm (1.9 in)	17.0 mm (0.7 in)	24 years	26 of 100 (Routine)
15 May 1929	Moose Factory, CA	daily snowfall	5.1 cm (2.0 in)	4.3 cm (1.7 in)	31 years	25 of 100 (Routine)
15 May 1929	Hamilton, CA	daily high min	14.4 C (57.9 F)	2.2 C (4.0 F)	49 years	25 of 100 (Routine)
15 May 1929	Parkers Landing, US	daily rain	29.2 mm (1.1 in)	11.4 mm (0.4 in)	24 years	23 of 100 (Routine)
15 May 1929	Port Arthur, CA	daily low max	0.6 C (33.1 F)	2.7 C (4.9 F)	40 years	22 of 100 (Routine)
15 May 1929	Mellette 4 W, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	32 years	22 of 100 (Routine)
15 May 1929	Houston Wb City, US	daily rain	78.0 mm (3.1 in)	36.6 mm (1.4 in)	7 years	22 of 100 (Routine)
15 May 1929	Lexington Bluegrass AP, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	54 years	22 of 100 (Routine)
15 May 1929	Calgary Int'l A, CA	daily low min	-7.8 C (18.0 F)	3.9 C (7.0 F)	26 years	21 of 100 (Routine)
15 May 1929	Clinton, US	daily rain	40.1 mm (1.6 in)	17.2 mm (0.7 in)	3 years	21 of 100 (Routine)
15 May 1929	Smithfield (Mun), ZA	daily rain	16.5 mm (0.6 in)	11.7 mm (0.5 in)	22 years	20 of 100 (Routine)
15 May 1929	Jhb-Joubert Park, ZA	daily rain	10.9 mm (0.4 in)	9.4 mm (0.37 in)	26 years	20 of 100 (Routine)
15 May 1929	Wolfville, CA	daily rain	13.5 mm (0.5 in)	4.6 mm (0.18 in)	30 years	20 of 100 (Routine)
15 May 1929	Bucyrus, US	daily high min	19.4 C (66.9 F)	3.8 C (6.8 F)	34 years	20 of 100 (Routine)
15 May 1929	Enosburg Falls, US	daily rain	31.5 mm (1.2 in)	11.2 mm (0.4 in)	4 years	19 of 100 (Routine)
15 May 1929	Yerevan, AM	daily rain	14.0 mm (0.6 in)	2.0 mm (0.08 in)	36 years	18 of 100 (Routine)
15 May 1929	Mardie, AU	daily rain	4.6 mm (0.18 in)	4.6 mm (0.18 in)	42 years	18 of 100 (Routine)
15 May 1929	Swift Current, CA	daily snowfall	1.0 cm (0.4 in)	1.0 cm (0.4 in)	42 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

1820 to 1929

Records set or tied on this calendar date in each year from 1820 to 1929. 1929 had 161 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1929-05-15: 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 10	98
10 to 20	9
20 to 30	6
30 to 40	2
40 to 50	1
50 to 60	1