Weather Records on 7 October 1921

68 weather records were set or tied worldwide on 7 October 1921. Highest significance: Guelph Oac, CA.

Key Facts for 7 October 1921

On 7 October 1921, 68 weather records were set or tied at long-record stations worldwide.
40 were record highs and 2 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 63 daily.
Guelph Oac set a daily record precipitation of 33.8 mm (1.3 in) on 7 October 1921.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 462 records.

Record Map

68 stations

68 station records on 7 October 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 7 October 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Guelph Oac	Canada	Record daily precipitation	33.8 mm (1.3 in)	34 of 100 (Routine)
Oxford	United Kingdom	Record high maximum temperature	24.6 C (76.3 F)	32 of 100 (Routine)
Woodstock	Canada	Record daily precipitation	45.0 mm (1.8 in)	31 of 100 (Routine)
Lindsay	Canada	Record daily precipitation	35.1 mm (1.4 in)	29 of 100 (Routine)
Barrie	Canada	Record daily precipitation	27.7 mm (1.1 in)	28 of 100 (Routine)
Georgetown	Canada	Record daily precipitation	37.6 mm (1.5 in)	28 of 100 (Routine)
Ottawa	Canada	Record daily precipitation	32.8 mm (1.3 in)	27 of 100 (Routine)
Peterborough	Canada	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Nemours (Ghazaouet)	Algeria	Record high maximum temperature	32.0 C (89.6 F)	22 of 100 (Routine)
Karesuando	Sweden	Record daily precipitation	15.9 mm (0.6 in)	20 of 100 (Routine)
Gammon Ranges (Wooltana)	Australia	Record daily precipitation	5.6 mm (0.22 in)	20 of 100 (Routine)
Port Dover	Canada	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Cap Chat	Canada	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Bremen-Seefahrtschule	Germany	Record high maximum temperature	24.2 C (75.6 F)	20 of 100 (Routine)
Sidi-Bel-Abbes	Algeria	Record high minimum temperature	20.0 C (68.0 F)	19 of 100 (Routine)
Ottawa Cda	Canada	Record daily precipitation	20.3 mm (0.8 in)	19 of 100 (Routine)
Lubeck-Werft	Germany	Record high maximum temperature	22.5 C (72.5 F)	18 of 100 (Routine)
Wollun	Australia	Record daily precipitation	28.2 mm (1.1 in)	17 of 100 (Routine)
Schwerin	Germany	Record high maximum temperature	22.3 C (72.1 F)	17 of 100 (Routine)
Vastervik	Sweden	Record high maximum temperature	17.5 C (63.5 F)	17 of 100 (Routine)
Killalpaninna	Australia	Record daily precipitation	1.8 mm (0.07 in)	16 of 100 (Routine)
Uccle	Belgium	Record high maximum temperature	27.3 C (81.1 F)	16 of 100 (Routine)
Vanersborg	Sweden	Record high maximum temperature	16.5 C (61.7 F)	16 of 100 (Routine)
Skara 1	Sweden	Record high maximum temperature	17.0 C (62.6 F)	16 of 100 (Routine)
Clontarf	Canada	Record daily precipitation	31.2 mm (1.2 in)	15 of 100 (Routine)
Alton	Canada	Record daily snowfall	1.3 cm (0.5 in)	15 of 100 (Routine)
Lakefield	Canada	Record daily precipitation	19.6 mm (0.8 in)	15 of 100 (Routine)
Arnsberg	Germany	Record high maximum temperature	25.6 C (78.1 F)	15 of 100 (Routine)
Cet Central England	United Kingdom	Record high maximum temperature	21.3 C (70.3 F)	15 of 100 (Routine)
Portage Wwtp	United States	Record daily precipitation	21.8 mm (0.9 in)	15 of 100 (Routine)
Biskra	Algeria	Record high maximum temperature	39.0 C (102.2 F)	14 of 100 (Routine)
Toronto Deer Park	Canada	Record daily precipitation	31.5 mm (1.2 in)	14 of 100 (Routine)
Tranebjerg	Denmark	Record high maximum temperature	17.5 C (63.5 F)	14 of 100 (Routine)
Magdeburg	Germany	Record high maximum temperature	23.4 C (74.1 F)	14 of 100 (Routine)
Sandvig	Denmark	Record high maximum temperature	16.9 C (62.4 F)	13 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record high maximum temperature	18.0 C (64.4 F)	13 of 100 (Routine)
Gavle	Sweden	Record high maximum temperature	16.4 C (61.5 F)	13 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record daily precipitation	29.0 mm (1.1 in)	13 of 100 (Routine)
Adelaide West Terrace	Australia	Record high minimum temperature	17.4 C (63.3 F)	12 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record low maximum temperature	3.9 C (39.0 F)	12 of 100 (Routine)
Belton (Shadow Vale)	Australia	Record daily precipitation	12.7 mm (0.5 in)	10 of 100 (Routine)
Altastenberg	Germany	Record high minimum temperature	9.4 C (48.9 F)	10 of 100 (Routine)
Freiburg	Germany	Record high maximum temperature	24.0 C (75.2 F)	10 of 100 (Routine)
Przhevalsk	Kyrgyzstan	Record daily precipitation	13.9 mm (0.5 in)	10 of 100 (Routine)
Simferopol	Ukraine	Record low minimum temperature	-2.6 C (27.3 F)	10 of 100 (Routine)
Prescott 2 NNW	United States	Record high minimum temperature	21.7 C (71.1 F)	10 of 100 (Routine)
Toledo Blade	United States	Record daily precipitation	30.2 mm (1.2 in)	10 of 100 (Routine)
Muenster	Germany	Record high maximum temperature	26.2 C (79.2 F)	9 of 100 (Routine)
Hamburg Fuhlsbuettel	Germany	Record high maximum temperature	20.6 C (69.1 F)	9 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record daily precipitation	12.0 mm (0.5 in)	9 of 100 (Routine)
Tashkent	Uzbekistan	Record high minimum temperature	14.5 C (58.1 F)	9 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record high minimum temperature	8.4 C (47.1 F)	8 of 100 (Routine)
Cape York Post Office	Australia	Record daily precipitation	1.3 mm (0.05 in)	7 of 100 (Routine)
Kirchdorf/Poel	Germany	Record high maximum temperature	20.4 C (68.7 F)	7 of 100 (Routine)
Boras	Sweden	Record high maximum temperature	17.0 C (62.6 F)	7 of 100 (Routine)
Sheffield	United Kingdom	Record high minimum temperature	14.4 C (57.9 F)	7 of 100 (Routine)
Karlsruhe	Germany	Record high maximum temperature	25.0 C (77.0 F)	6 of 100 (Routine)
Durham	United Kingdom	Record high maximum temperature	20.6 C (69.1 F)	5 of 100 (Routine)
Currandooley	Australia	Record daily precipitation	11.4 mm (0.4 in)	3 of 100 (Routine)
Calgary Int'l A	Canada	Record high maximum temperature	27.2 C (81.0 F)	3 of 100 (Routine)

Counts by Type and Timescale

68 records

Records set or tied on 7 October 1921 by type: Highest daily maximum 31, Lowest daily maximum 1, Highest daily minimum 9, Lowest daily minimum 1, Heaviest daily rainfall 24, Heaviest daily snowfall 2.

Records on 7 October 1921 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	1
Highest daily minimum	9
Lowest daily minimum	1
Heaviest daily rainfall	24
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 7 October 1921 by timescale: all-time 0, monthly 5, daily 63.

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 25.0. Ties are not counted.

Top 20 by Significance

7 October 1921

Top 20 records on 7 October 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 October 1921	Guelph Oac, CA	daily rain	33.8 mm (1.3 in)	19.1 mm (0.8 in)	20 years	34 of 100 (Routine)
7 October 1921	Oxford, GB	daily high max	24.6 C (76.3 F)	2.2 C (4.0 F)	51 years	32 of 100 (Routine)
7 October 1921	Woodstock, CA	daily rain	45.0 mm (1.8 in)	18.6 mm (0.7 in)	18 years	31 of 100 (Routine)
7 October 1921	Lindsay, CA	daily rain	35.1 mm (1.4 in)	15.5 mm (0.6 in)	10 years	29 of 100 (Routine)
7 October 1921	Barrie, CA	daily rain	27.7 mm (1.1 in)	12.5 mm (0.5 in)	20 years	28 of 100 (Routine)
7 October 1921	Georgetown, CA	daily rain	37.6 mm (1.5 in)	15.2 mm (0.6 in)	20 years	28 of 100 (Routine)
7 October 1921	Ottawa, CA	daily rain	32.8 mm (1.3 in)	7.4 mm (0.29 in)	48 years	27 of 100 (Routine)
7 October 1921	Peterborough, CA	daily rain	27.9 mm (1.1 in)	11.4 mm (0.4 in)	24 years	25 of 100 (Routine)
7 October 1921	Nemours (Ghazaouet), DZ	daily high max	32.0 C (89.6 F)	1.6 C (2.9 F)	40 years	22 of 100 (Routine)
7 October 1921	Karesuando, SE	monthly rain	15.9 mm (0.6 in)	1.6 mm (0.06 in)	25 years	20 of 100 (Routine)
7 October 1921	Gammon Ranges (Wooltana), AU	daily rain	5.6 mm (0.22 in)	5.6 mm (0.22 in)	36 years	20 of 100 (Routine)
7 October 1921	Port Dover, CA	daily rain	23.1 mm (0.9 in)	10.7 mm (0.4 in)	14 years	20 of 100 (Routine)
7 October 1921	Cap Chat, CA	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	38 years	20 of 100 (Routine)
7 October 1921	Bremen-Seefahrtschule, DE	monthly high max	24.2 C (75.6 F)	0.5 C (0.9 F)	20 years	20 of 100 (Routine)
7 October 1921	Sidi-Bel-Abbes, DZ	monthly high min	20.0 C (68.0 F)	1.0 C (1.8 F)	9 years	19 of 100 (Routine)
7 October 1921	Ottawa Cda, CA	daily rain	20.3 mm (0.8 in)	8.9 mm (0.35 in)	14 years	19 of 100 (Routine)
7 October 1921	Lubeck-Werft, DE	daily high max	22.5 C (72.5 F)	2.7 C (4.9 F)	29 years	18 of 100 (Routine)
7 October 1921	Wollun, AU	daily rain	28.2 mm (1.1 in)	5.8 mm (0.23 in)	31 years	17 of 100 (Routine)
7 October 1921	Schwerin, DE	daily high max	22.3 C (72.1 F)	2.8 C (5.0 F)	29 years	17 of 100 (Routine)
7 October 1921	Vastervik, SE	daily high max	17.5 C (63.5 F)	1.5 C (2.7 F)	31 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

1802 to 1921

Records set or tied on this calendar date in each year from 1802 to 1921. 1921 had 68 records.

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

Records on 10-07 in each year
Year	Records
1802	1
1811	1
1824	1
1839	1
1843	1
1852	2
1853	1
1854	1
1858	1
1861	1
1863	2
1864	4
1865	1
1867	2
1868	1
1869	1
1872	2
1873	4
1875	1
1876	2
1877	1
1878	1
1880	1
1881	1
1882	1
1884	1
1886	1
1887	1
1888	2
1889	3
1890	4
1891	2
1892	2
1893	5
1895	2
1896	2
1897	6
1898	7
1899	6
1900	6
1901	14
1902	3
1903	11
1904	27
1905	9
1906	5
1907	10
1908	14
1909	14
1910	18
1911	24
1912	36
1913	32
1914	20
1915	22
1916	35
1917	47
1918	121
1919	28
1920	106
1921	68
1922	43
1923	117
1924	86
1925	247
1926	157
1927	173
1928	120
1929	121
1930	517
1931	603
1932	476
1933	166
1934	237
1935	918
1936	436
1937	359
1938	471
1939	769
1940	159
1941	892
1942	184
1943	424
1944	265
1945	257
1946	1,128
1947	557
1948	333
1949	576
1950	363
1951	604
1952	1,470
1953	524
1954	465
1955	629
1956	548
1957	567
1958	598
1959	770
1960	413
1961	721
1962	449
1963	453
1964	961
1965	584
1966	398
1967	432
1968	764
1969	365
1970	1,148
1971	629
1972	537
1973	461
1974	773
1975	760
1976	1,087
1977	808
1978	406
1979	774
1980	1,253
1981	737
1982	1,079
1983	555
1984	717
1985	1,089
1986	519
1987	834
1988	753
1989	389
1990	948
1991	1,189
1992	872
1993	918
1994	1,144
1995	658
1996	1,073
1997	1,903
1998	1,331
1999	895
2000	2,427
2001	823
2002	704
2003	1,364
2004	518
2005	1,476
2006	1,004
2007	2,285
2008	621
2009	1,926
2010	994
2011	1,216
2012	1,350
2013	675
2014	569
2015	439
2016	537
2017	581
2018	1,063
2019	569
2020	1,175
2021	586
2022	557
2023	705
2024	849
2025	525
2026	917

Download the Data

Data for records on 1921-10-07: 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	41
5 to 10	7
10 to 15	4
15 to 20	4
20 to 25	1