Weather Records on 4 September 1929

371 weather records were set or tied worldwide on 4 September 1929. Highest significance: Tyndall, US.

Key Facts for 4 September 1929

On 4 September 1929, 371 weather records were set or tied at long-record stations worldwide.
204 were record highs and 65 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 31 monthly and 340 daily.
Tyndall set a daily record precipitation of 41.9 mm (1.6 in) on 4 September 1929.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 452 records.

Record Map

371 stations

371 station records on 4 September 1929 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 September 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tyndall	United States	Record daily precipitation	41.9 mm (1.6 in)	39 of 100 (Notable)
Herschel	South Africa	Record daily precipitation	35.8 mm (1.4 in)	36 of 100 (Notable)
Mitchell 2 N	United States	Record daily precipitation	31.0 mm (1.2 in)	36 of 100 (Notable)
Toronto	Canada	Record high maximum temperature	32.2 C (90.0 F)	35 of 100 (Notable)
Smithfield (Mun)	South Africa	Record daily precipitation	25.9 mm (1.0 in)	33 of 100 (Routine)
Humansdorp (Pol)	South Africa	Record daily precipitation	34.5 mm (1.4 in)	32 of 100 (Routine)
Dordrecht - Tnk 14	South Africa	Record daily precipitation	26.2 mm (1.0 in)	32 of 100 (Routine)
Setif	Algeria	Record high minimum temperature	26.0 C (78.8 F)	30 of 100 (Routine)
Parry Sound	Canada	Record high minimum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Sterkstroom (Pol)	South Africa	Record daily precipitation	53.3 mm (2.1 in)	30 of 100 (Routine)
Denison	United States	Record daily precipitation	39.4 mm (1.6 in)	30 of 100 (Routine)
Madison	United States	Record daily precipitation	31.8 mm (1.3 in)	29 of 100 (Routine)
Uccle	Belgium	Record high maximum temperature	34.9 C (94.8 F)	28 of 100 (Routine)
Norfolk	United States	Record daily precipitation	26.7 mm (1.1 in)	27 of 100 (Routine)
Washta	United States	Record daily precipitation	42.7 mm (1.7 in)	26 of 100 (Routine)
Watertown Wwtp	United States	Record daily precipitation	28.4 mm (1.1 in)	26 of 100 (Routine)
Alexandria (Pol)	South Africa	Record daily precipitation	29.2 mm (1.1 in)	25 of 100 (Routine)
West Bend	United States	Record daily precipitation	31.8 mm (1.3 in)	25 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	34.4 C (93.9 F)	25 of 100 (Routine)
Napoleon	United States	Record daily precipitation	31.8 mm (1.3 in)	25 of 100 (Routine)
Canton	United States	Record daily precipitation	31.0 mm (1.2 in)	25 of 100 (Routine)
Stratford	Canada	Record high maximum temperature	33.3 C (91.9 F)	24 of 100 (Routine)
Algona	United States	Record daily precipitation	34.3 mm (1.4 in)	24 of 100 (Routine)
Harlan	United States	Record daily precipitation	34.5 mm (1.4 in)	24 of 100 (Routine)
St Ignace	United States	Record high maximum temperature	33.3 C (91.9 F)	24 of 100 (Routine)
Cortland	United States	Record high maximum temperature	34.4 C (93.9 F)	24 of 100 (Routine)
Hendersonville 1 NE	United States	Record daily precipitation	52.3 mm (2.1 in)	24 of 100 (Routine)
Traverse Cy Cherry Capital AP	United States	Record high minimum temperature	26.7 C (80.1 F)	24 of 100 (Routine)
Pitt Town (the Manse)	Australia	Record daily precipitation	25.4 mm (1.0 in)	23 of 100 (Routine)
New Brunswick Exp STN	United States	Record high maximum temperature	36.7 C (98.1 F)	23 of 100 (Routine)
Wappingers Falls	United States	Record high maximum temperature	36.7 C (98.1 F)	23 of 100 (Routine)
Lewistown AP	United States	Record low minimum temperature	-6.7 C (19.9 F)	23 of 100 (Routine)
Prince Albert	Canada	Record low maximum temperature	7.8 C (46.0 F)	22 of 100 (Routine)
Beatrice	Canada	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Norwalk	United States	Record high maximum temperature	36.1 C (97.0 F)	22 of 100 (Routine)
Mackinaw City 2	United States	Record high maximum temperature	32.8 C (91.0 F)	22 of 100 (Routine)
Glens Falls Fire STN	United States	Record high maximum temperature	33.9 C (93.0 F)	22 of 100 (Routine)
Manitowoc	United States	Record daily precipitation	25.4 mm (1.0 in)	22 of 100 (Routine)
Welland	Canada	Record high maximum temperature	31.7 C (89.1 F)	21 of 100 (Routine)
Hamilton	Canada	Record high maximum temperature	33.9 C (93.0 F)	21 of 100 (Routine)
Peterborough	Canada	Record high maximum temperature	34.4 C (93.9 F)	21 of 100 (Routine)
Abitibi Post	Canada	Record daily precipitation	29.2 mm (1.1 in)	21 of 100 (Routine)
Lady Grey (Pol)	South Africa	Record daily precipitation	25.4 mm (1.0 in)	21 of 100 (Routine)
Middletown 4 W	United States	Record high maximum temperature	33.9 C (93.0 F)	21 of 100 (Routine)
Le Mars	United States	Record daily precipitation	32.5 mm (1.3 in)	21 of 100 (Routine)
Ny City Cntrl Park	United States	Record high maximum temperature	36.1 C (97.0 F)	21 of 100 (Routine)
Barkly East	South Africa	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Oranjerivier (Sar)	South Africa	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Lady Frere (Tnk)	South Africa	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Parnu	Estonia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Koffiefontein (Pol)	South Africa	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
New London	United States	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Nemours (Ghazaouet)	Algeria	Record daily precipitation	11.0 mm (0.4 in)	20 of 100 (Routine)
Steytlerville (Mag)	South Africa	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
W Pt	United States	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Southampton	Canada	Record high maximum temperature	31.1 C (88.0 F)	20 of 100 (Routine)
Arnsberg	Germany	Record high maximum temperature	32.4 C (90.3 F)	20 of 100 (Routine)
George Airport	South Africa	Record daily precipitation	26.2 mm (1.0 in)	20 of 100 (Routine)
Kokstad	South Africa	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Lake	United States	Record daily precipitation	27.9 mm (1.1 in)	20 of 100 (Routine)

Counts by Type and Timescale

371 records

Records set or tied on 4 September 1929 by type: Highest daily maximum 145, Lowest daily maximum 36, Highest daily minimum 59, Lowest daily minimum 29, Heaviest daily rainfall 101, Heaviest daily snowfall 1.

Records on 4 September 1929 by type
Record type	Records
Highest daily maximum	145
Lowest daily maximum	36
Highest daily minimum	59
Lowest daily minimum	29
Heaviest daily rainfall	101
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 4 September 1929 by timescale: all-time 0, monthly 31, daily 340.

How Much Records Were Beaten By

293 broken records

Margins by which the 293 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 35.5. Ties are not counted.

Top 20 by Significance

4 September 1929

Top 20 records on 4 September 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 September 1929	Tyndall, US	daily rain	41.9 mm (1.6 in)	35.5 mm (1.4 in)	26 years	39 of 100 (Notable)
4 September 1929	Herschel, ZA	daily rain	35.8 mm (1.4 in)	28.7 mm (1.1 in)	0 years	36 of 100 (Notable)
4 September 1929	Mitchell 2 N, US	daily rain	31.0 mm (1.2 in)	27.2 mm (1.1 in)	26 years	36 of 100 (Notable)
4 September 1929	Toronto, CA	daily high max	32.2 C (90.0 F)	0.5 C (0.9 F)	85 years	35 of 100 (Notable)
4 September 1929	Smithfield (Mun), ZA	daily rain	25.9 mm (1.0 in)	16.5 mm (0.6 in)	35 years	33 of 100 (Routine)
4 September 1929	Humansdorp (Pol), ZA	daily rain	34.5 mm (1.4 in)	21.0 mm (0.8 in)	31 years	32 of 100 (Routine)
4 September 1929	Dordrecht - Tnk 14, ZA	daily rain	26.2 mm (1.0 in)	14.5 mm (0.6 in)	40 years	32 of 100 (Routine)
4 September 1929	Setif, DZ	monthly high min	26.0 C (78.8 F)	4.0 C (7.2 F)	15 years	30 of 100 (Routine)
4 September 1929	Parry Sound, CA	monthly high min	20.6 C (69.1 F)	0.6 C (1.1 F)	49 years	30 of 100 (Routine)
4 September 1929	Sterkstroom (Pol), ZA	monthly rain	53.3 mm (2.1 in)	11.4 mm (0.4 in)	11 years	30 of 100 (Routine)
4 September 1929	Denison, US	daily rain	39.4 mm (1.6 in)	32.3 mm (1.3 in)	8 years	30 of 100 (Routine)
4 September 1929	Madison, US	daily rain	31.8 mm (1.3 in)	26.2 mm (1.0 in)	28 years	29 of 100 (Routine)
4 September 1929	Uccle, BE	monthly high max	34.9 C (94.8 F)	1.7 C (3.1 F)	18 years	28 of 100 (Routine)
4 September 1929	Norfolk, US	daily rain	26.7 mm (1.1 in)	25.2 mm (1.0 in)	20 years	27 of 100 (Routine)
4 September 1929	Washta, US	daily rain	42.7 mm (1.7 in)	27.0 mm (1.1 in)	28 years	26 of 100 (Routine)
4 September 1929	Watertown Wwtp, US	daily rain	28.4 mm (1.1 in)	23.8 mm (0.9 in)	26 years	26 of 100 (Routine)
4 September 1929	Alexandria (Pol), ZA	daily rain	29.2 mm (1.1 in)	10.1 mm (0.4 in)	41 years	25 of 100 (Routine)
4 September 1929	West Bend, US	daily rain	31.8 mm (1.3 in)	20.4 mm (0.8 in)	30 years	25 of 100 (Routine)
4 September 1929	World Trade Ctr, US	daily high max	34.4 C (93.9 F)	1.6 C (2.9 F)	53 years	25 of 100 (Routine)
4 September 1929	Napoleon, US	daily rain	31.8 mm (1.3 in)	11.5 mm (0.5 in)	19 years	25 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

1802 to 1929

Records set or tied on this calendar date in each year from 1802 to 1929. 1929 had 371 records.

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

Records on 09-04 in each year
Year	Records
1802	1
1805	1
1823	1
1833	1
1837	1
1839	1
1845	1
1847	1
1850	1
1854	1
1856	1
1857	1
1858	1
1861	1
1863	1
1864	1
1867	1
1868	1
1869	2
1871	1
1872	4
1874	1
1875	1
1877	1
1880	4
1881	1
1883	2
1885	3
1887	1
1888	2
1889	1
1890	1
1891	5
1894	4
1895	6
1896	1
1897	4
1898	9
1899	4
1900	1
1901	4
1902	4
1903	2
1904	7
1905	18
1906	16
1907	22
1908	9
1909	23
1910	91
1911	25
1912	29
1913	29
1914	19
1915	37
1916	24
1917	40
1918	96
1919	48
1920	105
1921	105
1922	62
1923	325
1924	167
1925	339
1926	256
1927	68
1928	341
1929	371
1930	102
1931	477
1932	429
1933	424
1934	393
1935	514
1936	309
1937	411
1938	236
1939	434
1940	287
1941	528
1942	323
1943	472
1944	341
1945	542
1946	431
1947	618
1948	409
1949	370
1950	642
1951	404
1952	645
1953	869
1954	372
1955	465
1956	586
1957	250
1958	384
1959	316
1960	552
1961	909
1962	733
1963	443
1964	507
1965	611
1966	428
1967	786
1968	546
1969	510
1970	644
1971	717
1972	513
1973	530
1974	2,279
1975	432
1976	582
1977	386
1978	940
1979	461
1980	355
1981	582
1982	617
1983	1,040
1984	1,107
1985	915
1986	663
1987	685
1988	1,259
1989	681
1990	787
1991	708
1992	1,132
1993	859
1994	1,001
1995	1,287
1996	907
1997	1,452
1998	1,564
1999	1,479
2000	1,336
2001	833
2002	767
2003	1,094
2004	898
2005	998
2006	1,268
2007	1,077
2008	1,335
2009	914
2010	1,804
2011	1,310
2012	1,209
2013	630
2014	461
2015	893
2016	597
2017	881
2018	758
2019	616
2020	957
2021	544
2022	1,256
2023	1,290
2024	985
2025	635
2026	1,222

Download the Data

Data for records on 1929-09-04: 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	222
5 to 10	31
10 to 15	20
15 to 20	4
20 to 25	5
25 to 30	9
30 to 35	1
35 to 40	1