Weather Records on 6 September 1921

67 weather records were set or tied worldwide on 6 September 1921. Highest significance: Mackay Post Office, AU.

Key Facts for 6 September 1921

On 6 September 1921, 67 weather records were set or tied at long-record stations worldwide.
19 were record highs and 3 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 64 daily.
Mackay Post Office set a daily record precipitation of 106.2 mm (4.2 in) on 6 September 1921.
Across 164 earlier years (1794 to 2026) the same calendar date averaged 453 records.

Record Map

67 stations

67 station records on 6 September 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 6 September 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mackay Post Office	Australia	Record daily precipitation	106.2 mm (4.2 in)	49 of 100 (Notable)
Oktjabrskij-Gorodok	Russia	Record daily precipitation	32.5 mm (1.3 in)	48 of 100 (Notable)
Bredasdorp	South Africa	Record daily precipitation	41.1 mm (1.6 in)	36 of 100 (Notable)
Dumosa	Australia	Record daily precipitation	35.6 mm (1.4 in)	35 of 100 (Notable)
Swellendam (Tnk)	South Africa	Record daily precipitation	44.5 mm (1.8 in)	31 of 100 (Routine)
Morgantown 1	United States	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Rowlesburg 1	United States	Record daily precipitation	37.1 mm (1.5 in)	29 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record high maximum temperature	22.8 C (73.0 F)	23 of 100 (Routine)
Tabl.Mtn Molteno Rsv	South Africa	Record daily precipitation	48.3 mm (1.9 in)	23 of 100 (Routine)
Table.Mtn Platteklip	South Africa	Record daily precipitation	39.9 mm (1.6 in)	22 of 100 (Routine)
Nebo	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Enngonia (Morton Plains)	Australia	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Royal Observatory	South Africa	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
St Helena Island	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Tampa	United States	Record high minimum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Point Escuminac	Canada	Record daily precipitation	23.4 mm (0.9 in)	19 of 100 (Routine)
Knysna (Tnk)	South Africa	Record daily precipitation	27.9 mm (1.1 in)	19 of 100 (Routine)
Stuttgart	United States	Record daily precipitation	43.4 mm (1.7 in)	19 of 100 (Routine)
Brinkley	United States	Record daily precipitation	28.4 mm (1.1 in)	18 of 100 (Routine)
Robe Comparison	Australia	Record high maximum temperature	20.7 C (69.3 F)	17 of 100 (Routine)
Windorah Post Office	Australia	Record daily precipitation	2.5 mm (0.10 in)	17 of 100 (Routine)
Millwood (Bos)	South Africa	Record daily precipitation	21.6 mm (0.9 in)	17 of 100 (Routine)
Marlborough Post Office	Australia	Record daily precipitation	9.7 mm (0.38 in)	16 of 100 (Routine)
Montagu (Pol)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	16 of 100 (Routine)
Tunis	Tunisia	Record high minimum temperature	23.0 C (73.4 F)	16 of 100 (Routine)
Somerville 4 NW	United States	Record high minimum temperature	21.7 C (71.1 F)	16 of 100 (Routine)
Adelaide West Terrace	Australia	Record high minimum temperature	17.6 C (63.7 F)	15 of 100 (Routine)
Charters Towers Post Office	Australia	Record daily precipitation	1.5 mm (0.06 in)	15 of 100 (Routine)
Woodford Post Office	Australia	Record daily precipitation	18.8 mm (0.7 in)	15 of 100 (Routine)
Chatham	Canada	Record daily precipitation	24.1 mm (0.9 in)	15 of 100 (Routine)
Biskra	Algeria	Record high maximum temperature	41.0 C (105.8 F)	14 of 100 (Routine)
Townsville Pilot Station	Australia	Record daily precipitation	8.6 mm (0.34 in)	14 of 100 (Routine)
St Lawrence Post Office	Australia	Record daily precipitation	11.2 mm (0.4 in)	14 of 100 (Routine)
Enngonia (Belalie)	Australia	Record daily precipitation	7.1 mm (0.28 in)	14 of 100 (Routine)
Charlottetown	Canada	Record daily precipitation	21.1 mm (0.8 in)	14 of 100 (Routine)
Sfax El-Maou	Tunisia	Record high maximum temperature	36.0 C (96.8 F)	14 of 100 (Routine)
Pentland Post Office	Australia	Record daily precipitation	22.6 mm (0.9 in)	13 of 100 (Routine)
Jundah Post Office	Australia	Record daily precipitation	2.5 mm (0.10 in)	13 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	16.5 mm (0.6 in)	13 of 100 (Routine)
Biskra	Algeria	Record high minimum temperature	27.0 C (80.6 F)	12 of 100 (Routine)
Springsure Comet St	Australia	Record daily precipitation	3.8 mm (0.15 in)	12 of 100 (Routine)
Northfield	United States	Record high minimum temperature	16.1 C (61.0 F)	12 of 100 (Routine)
Burdekin Shire Council	Australia	Record daily precipitation	5.6 mm (0.22 in)	11 of 100 (Routine)
Goudveld (Bos)	South Africa	Record daily precipitation	19.6 mm (0.8 in)	11 of 100 (Routine)
Collaroy Station	Australia	Record daily precipitation	7.6 mm (0.30 in)	10 of 100 (Routine)
Enoggera Reservoir	Australia	Record daily precipitation	11.4 mm (0.4 in)	10 of 100 (Routine)
Rolleston	Australia	Record daily precipitation	6.9 mm (0.27 in)	9 of 100 (Routine)
Adelaide West Terrace	Australia	Record high maximum temperature	26.6 C (79.9 F)	8 of 100 (Routine)
Oudtshoorn	South Africa	Record daily precipitation	8.4 mm (0.33 in)	8 of 100 (Routine)
Bloukrans (Bos)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	8 of 100 (Routine)
Gold Creek Reservoir	Australia	Record daily precipitation	15.5 mm (0.6 in)	7 of 100 (Routine)
Prescott 2 NNW	United States	Record daily precipitation	15.5 mm (0.6 in)	7 of 100 (Routine)
Sandgate Post Office	Australia	Record daily precipitation	10.2 mm (0.4 in)	6 of 100 (Routine)
Irkutsk	Russia	Record low minimum temperature	-3.5 C (25.7 F)	6 of 100 (Routine)
Pine Bluff	United States	Record daily precipitation	3.6 mm (0.14 in)	6 of 100 (Routine)
Emerald Post Office	Australia	Record low maximum temperature	22.6 C (72.7 F)	5 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record high minimum temperature	13.9 C (57.0 F)	5 of 100 (Routine)
Winterhoek	South Africa	Record daily precipitation	2.5 mm (0.10 in)	5 of 100 (Routine)
Jakutsk	Russia	Record high minimum temperature	12.1 C (53.8 F)	4 of 100 (Routine)
Constantine	Algeria	Record high minimum temperature	20.0 C (68.0 F)	3 of 100 (Routine)

Counts by Type and Timescale

67 records

Records set or tied on 6 September 1921 by type: Highest daily maximum 5, Lowest daily maximum 1, Highest daily minimum 14, Lowest daily minimum 2, Heaviest daily rainfall 45.

Records on 6 September 1921 by type
Record type	Records
Highest daily maximum	5
Lowest daily maximum	1
Highest daily minimum	14
Lowest daily minimum	2
Heaviest daily rainfall	45
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 6 September 1921 by timescale: all-time 0, monthly 3, daily 64.

How Much Records Were Beaten By

57 broken records

Margins by which the 57 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 104.9. Ties are not counted.

Top 20 by Significance

6 September 1921

Top 20 records on 6 September 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 September 1921	Mackay Post Office, AU	daily rain	106.2 mm (4.2 in)	104.9 mm (4.1 in)	14 years	49 of 100 (Notable)
6 September 1921	Oktjabrskij-Gorodok, RU	daily rain	32.5 mm (1.3 in)	24.0 mm (0.9 in)	16 years	48 of 100 (Notable)
6 September 1921	Bredasdorp, ZA	daily rain	41.1 mm (1.6 in)	16.7 mm (0.7 in)	35 years	36 of 100 (Notable)
6 September 1921	Dumosa, AU	daily rain	35.6 mm (1.4 in)	20.6 mm (0.8 in)	0 years	35 of 100 (Notable)
6 September 1921	Swellendam (Tnk), ZA	daily rain	44.5 mm (1.8 in)	24.2 mm (1.0 in)	20 years	31 of 100 (Routine)
6 September 1921	Morgantown 1, US	daily rain	63.5 mm (2.5 in)	25.4 mm (1.0 in)	4 years	31 of 100 (Routine)
6 September 1921	Rowlesburg 1, US	daily rain	37.1 mm (1.5 in)	17.5 mm (0.7 in)	29 years	29 of 100 (Routine)
6 September 1921	Cape Otway Lighthouse, AU	daily high max	22.8 C (73.0 F)	1.7 C (3.1 F)	44 years	23 of 100 (Routine)
6 September 1921	Tabl.Mtn Molteno Rsv, ZA	monthly rain	48.3 mm (1.9 in)	3.1 mm (0.12 in)	25 years	23 of 100 (Routine)
6 September 1921	Table.Mtn Platteklip, ZA	daily rain	39.9 mm (1.6 in)	9.9 mm (0.39 in)	27 years	22 of 100 (Routine)
6 September 1921	Nebo, AU	daily rain	10.2 mm (0.4 in)	10.2 mm (0.4 in)	48 years	20 of 100 (Routine)
6 September 1921	Enngonia (Morton Plains), AU	daily rain	10.7 mm (0.4 in)	10.7 mm (0.4 in)	35 years	20 of 100 (Routine)
6 September 1921	Royal Observatory, ZA	daily rain	22.9 mm (0.9 in)	3.8 mm (0.15 in)	35 years	20 of 100 (Routine)
6 September 1921	St Helena Island, AU	daily rain	17.8 mm (0.7 in)	10.2 mm (0.4 in)	29 years	20 of 100 (Routine)
6 September 1921	Tampa, US	monthly high min	26.1 C (79.0 F)	0.5 C (0.9 F)	16 years	20 of 100 (Routine)
6 September 1921	Point Escuminac, CA	daily rain	23.4 mm (0.9 in)	14.3 mm (0.6 in)	10 years	19 of 100 (Routine)
6 September 1921	Knysna (Tnk), ZA	daily rain	27.9 mm (1.1 in)	15.5 mm (0.6 in)	14 years	19 of 100 (Routine)
6 September 1921	Stuttgart, US	daily rain	43.4 mm (1.7 in)	19.3 mm (0.8 in)	22 years	19 of 100 (Routine)
6 September 1921	Brinkley, US	daily rain	28.4 mm (1.1 in)	18.2 mm (0.7 in)	22 years	18 of 100 (Routine)
6 September 1921	Robe Comparison, AU	daily high max	20.7 C (69.3 F)	3.0 C (5.4 F)	7 years	17 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

1794 to 1921

Records set or tied on this calendar date in each year from 1794 to 1921. 1921 had 67 records.

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

Records on 09-06 in each year
Year	Records
1794	1
1802	1
1803	1
1812	1
1814	2
1833	1
1834	1
1841	1
1853	1
1854	1
1861	1
1865	2
1866	2
1867	1
1868	1
1869	2
1871	2
1872	2
1873	2
1876	1
1877	1
1880	1
1881	3
1883	2
1884	1
1885	1
1887	2
1888	1
1890	3
1891	1
1892	4
1893	2
1894	4
1895	4
1896	2
1897	4
1898	5
1899	5
1900	5
1901	2
1902	5
1903	5
1904	6
1905	14
1906	8
1907	14
1908	36
1909	13
1910	28
1911	20
1912	55
1913	21
1914	23
1915	14
1916	16
1917	23
1918	62
1919	106
1920	172
1921	67
1922	114
1923	153
1924	335
1925	290
1926	123
1927	137
1928	252
1929	359
1930	101
1931	324
1932	275
1933	368
1934	462
1935	341
1936	338
1937	237
1938	322
1939	447
1940	170
1941	276
1942	284
1943	831
1944	392
1945	537
1946	426
1947	895
1948	379
1949	525
1950	699
1951	263
1952	350
1953	396
1954	567
1955	493
1956	735
1957	311
1958	489
1959	405
1960	382
1961	317
1962	772
1963	419
1964	393
1965	722
1966	296
1967	878
1968	512
1969	737
1970	910
1971	436
1972	567
1973	866
1974	897
1975	426
1976	915
1977	467
1978	1,273
1979	892
1980	458
1981	542
1982	744
1983	1,965
1984	1,354
1985	1,371
1986	751
1987	735
1988	1,547
1989	544
1990	805
1991	757
1992	1,084
1993	856
1994	622
1995	1,220
1996	934
1997	1,389
1998	1,385
1999	1,048
2000	1,500
2001	631
2002	867
2003	718
2004	956
2005	601
2006	1,104
2007	1,246
2008	1,430
2009	735
2010	1,259
2011	1,684
2012	803
2013	886
2014	588
2015	692
2016	605
2017	838
2018	714
2019	797
2020	1,349
2021	407
2022	1,782
2023	905
2024	1,161
2025	894
2026	846

Download the Data

Data for records on 1921-09-06: 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 20	52
20 to 40	4
40 to 60	0
60 to 80	0
80 to 100	0
100 to 120	1