Weather Records on 5 September 1918

109 weather records were set or tied worldwide on 5 September 1918. Highest significance: Port Dover, CA.

Key Facts for 5 September 1918

On 5 September 1918, 109 weather records were set or tied at long-record stations worldwide.
4 were record highs and 22 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 104 daily.
Port Dover set a daily record precipitation of 64.3 mm (2.5 in) on 5 September 1918.
Across 157 earlier years (1802 to 2026) the same calendar date averaged 463 records.

Record Map

109 stations

109 station records on 5 September 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 5 September 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Dover	Canada	Record daily precipitation	64.3 mm (2.5 in)	49 of 100 (Notable)
Orillia	Canada	Record daily precipitation	54.6 mm (2.1 in)	48 of 100 (Notable)
Hamilton	Canada	Record daily precipitation	74.2 mm (2.9 in)	48 of 100 (Notable)
Montreal McGill	Canada	Record daily precipitation	55.9 mm (2.2 in)	46 of 100 (Notable)
Kingston Queens U	Canada	Record daily precipitation	52.8 mm (2.1 in)	45 of 100 (Notable)
Lucknow	Canada	Record daily precipitation	47.0 mm (1.9 in)	41 of 100 (Notable)
Ottawa	Canada	Record daily precipitation	61.7 mm (2.4 in)	35 of 100 (Notable)
Bic	Canada	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Alton	Canada	Record daily precipitation	43.2 mm (1.7 in)	31 of 100 (Routine)
Beatrice	Canada	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Stoney Creek	Canada	Record daily precipitation	67.3 mm (2.6 in)	29 of 100 (Routine)
Quebec	Canada	Record daily precipitation	46.5 mm (1.8 in)	27 of 100 (Routine)
Port Stanley	Canada	Record daily precipitation	41.9 mm (1.6 in)	26 of 100 (Routine)
Westminster	Canada	Record daily precipitation	39.6 mm (1.6 in)	24 of 100 (Routine)
Paris	Canada	Record daily precipitation	56.9 mm (2.2 in)	22 of 100 (Routine)
Guelph Oac	Canada	Record daily precipitation	42.9 mm (1.7 in)	21 of 100 (Routine)
Georgetown	Canada	Record daily precipitation	52.3 mm (2.1 in)	21 of 100 (Routine)
Peterborough	Canada	Record daily precipitation	54.1 mm (2.1 in)	21 of 100 (Routine)
Anticosti West Point	Canada	Record daily precipitation	38.1 mm (1.5 in)	21 of 100 (Routine)
Arhangelsk	Russia	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Charters Towers Post Office	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Narre Warren North (Narre Warr	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Townsville Pilot Station	Australia	Record daily precipitation	4.8 mm (0.19 in)	19 of 100 (Routine)
Lilydale	Australia	Record daily precipitation	17.8 mm (0.7 in)	19 of 100 (Routine)
Mornington	Australia	Record daily precipitation	11.2 mm (0.4 in)	19 of 100 (Routine)
Coranderrk Badger Weir	Australia	Record daily precipitation	16.3 mm (0.6 in)	19 of 100 (Routine)
New Westminster	Canada	Record high maximum temperature	28.9 C (84.0 F)	19 of 100 (Routine)
Barrie	Canada	Record daily precipitation	40.4 mm (1.6 in)	19 of 100 (Routine)
London South	Canada	Record daily precipitation	44.2 mm (1.7 in)	19 of 100 (Routine)
Sydney	Canada	Record high minimum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Worcester	South Africa	Record daily precipitation	10.7 mm (0.4 in)	19 of 100 (Routine)
Calitzdorp Pol	South Africa	Record daily precipitation	4.6 mm (0.18 in)	19 of 100 (Routine)
Malvern	United States	Record daily precipitation	41.9 mm (1.6 in)	19 of 100 (Routine)
Stratford	Canada	Record low maximum temperature	13.9 C (57.0 F)	18 of 100 (Routine)
Yarmouth	Canada	Record high maximum temperature	25.6 C (78.1 F)	18 of 100 (Routine)
Tulbagh (Pol)	South Africa	Record daily precipitation	17.3 mm (0.7 in)	18 of 100 (Routine)
Walsingham 1	South Africa	Record daily precipitation	14.0 mm (0.6 in)	18 of 100 (Routine)
Banana Post Office	Australia	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Warburton	Australia	Record daily precipitation	35.1 mm (1.4 in)	17 of 100 (Routine)
Aurora	Canada	Record daily precipitation	35.6 mm (1.4 in)	17 of 100 (Routine)
Middleton (Sar)	South Africa	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Duaringa Post Office	Australia	Record daily precipitation	15.2 mm (0.6 in)	16 of 100 (Routine)
Owen Sound	Canada	Record daily precipitation	25.1 mm (1.0 in)	16 of 100 (Routine)
Port Stanley	Canada	Record low maximum temperature	16.1 C (61.0 F)	16 of 100 (Routine)
Little Rock St Capitol	United States	Record low maximum temperature	21.1 C (70.0 F)	16 of 100 (Routine)
La Crosse Wb City	United States	Record low minimum temperature	4.4 C (39.9 F)	16 of 100 (Routine)
Hughenden Post Office	Australia	Record daily precipitation	3.0 mm (0.12 in)	15 of 100 (Routine)
Ayrshire Downs	Australia	Record daily precipitation	3.3 mm (0.13 in)	15 of 100 (Routine)
Winton Post Office	Australia	Record daily precipitation	2.3 mm (0.09 in)	15 of 100 (Routine)
Hawkesdale (Post Office)	Australia	Record daily precipitation	14.7 mm (0.6 in)	15 of 100 (Routine)
Mortlake	Australia	Record daily precipitation	18.8 mm (0.7 in)	15 of 100 (Routine)
Renfrew	Canada	Record low maximum temperature	13.3 C (55.9 F)	15 of 100 (Routine)
Gravenhurst	Canada	Record low maximum temperature	13.9 C (57.0 F)	15 of 100 (Routine)
Alicedale	South Africa	Record daily precipitation	8.9 mm (0.35 in)	15 of 100 (Routine)
Fort Beaufort	South Africa	Record daily precipitation	5.6 mm (0.22 in)	15 of 100 (Routine)
Wellwood	South Africa	Record daily precipitation	6.1 mm (0.24 in)	15 of 100 (Routine)
Mackay Post Office	Australia	Record daily precipitation	8.6 mm (0.34 in)	14 of 100 (Routine)
Muttaburra	Australia	Record daily precipitation	3.6 mm (0.14 in)	14 of 100 (Routine)
Welland	Canada	Record daily precipitation	29.2 mm (1.1 in)	14 of 100 (Routine)
Woodstock	Canada	Record low maximum temperature	13.3 C (55.9 F)	14 of 100 (Routine)

Counts by Type and Timescale

109 records

Records set or tied on 5 September 1918 by type: Highest daily maximum 2, Lowest daily maximum 18, Highest daily minimum 2, Lowest daily minimum 4, Heaviest daily rainfall 83.

Records on 5 September 1918 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	18
Highest daily minimum	2
Lowest daily minimum	4
Heaviest daily rainfall	83
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 5 September 1918 by timescale: all-time 0, monthly 5, daily 104.

How Much Records Were Beaten By

101 broken records

Margins by which the 101 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 47.0. Ties are not counted.

Top 20 by Significance

5 September 1918

Top 20 records on 5 September 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 September 1918	Port Dover, CA	daily rain	64.3 mm (2.5 in)	47.0 mm (1.9 in)	19 years	49 of 100 (Notable)
5 September 1918	Orillia, CA	daily rain	54.6 mm (2.1 in)	32.5 mm (1.3 in)	21 years	48 of 100 (Notable)
5 September 1918	Hamilton, CA	daily rain	74.2 mm (2.9 in)	45.8 mm (1.8 in)	19 years	48 of 100 (Notable)
5 September 1918	Montreal McGill, CA	daily rain	55.9 mm (2.2 in)	38.9 mm (1.5 in)	8 years	46 of 100 (Notable)
5 September 1918	Kingston Queens U, CA	daily rain	52.8 mm (2.1 in)	34.3 mm (1.4 in)	8 years	45 of 100 (Notable)
5 September 1918	Lucknow, CA	daily rain	47.0 mm (1.9 in)	35.6 mm (1.4 in)	11 years	41 of 100 (Notable)
5 September 1918	Ottawa, CA	monthly rain	61.7 mm (2.4 in)	13.9 mm (0.5 in)	10 years	35 of 100 (Notable)
5 September 1918	Bic, CA	daily rain	50.8 mm (2.0 in)	27.9 mm (1.1 in)	8 years	34 of 100 (Routine)
5 September 1918	Alton, CA	daily rain	43.2 mm (1.7 in)	24.7 mm (1.0 in)	28 years	31 of 100 (Routine)
5 September 1918	Beatrice, CA	daily rain	35.6 mm (1.4 in)	17.6 mm (0.7 in)	25 years	30 of 100 (Routine)
5 September 1918	Stoney Creek, CA	monthly rain	67.3 mm (2.6 in)	9.6 mm (0.38 in)	27 years	29 of 100 (Routine)
5 September 1918	Quebec, CA	daily rain	46.5 mm (1.8 in)	20.6 mm (0.8 in)	8 years	27 of 100 (Routine)
5 September 1918	Port Stanley, CA	daily rain	41.9 mm (1.6 in)	14.0 mm (0.6 in)	19 years	26 of 100 (Routine)
5 September 1918	Westminster, CA	daily rain	39.6 mm (1.6 in)	14.2 mm (0.6 in)	25 years	24 of 100 (Routine)
5 September 1918	Paris, CA	monthly rain	56.9 mm (2.2 in)	2.5 mm (0.10 in)	21 years	22 of 100 (Routine)
5 September 1918	Guelph Oac, CA	daily rain	42.9 mm (1.7 in)	12.7 mm (0.5 in)	8 years	21 of 100 (Routine)
5 September 1918	Georgetown, CA	monthly rain	52.3 mm (2.1 in)	2.5 mm (0.10 in)	19 years	21 of 100 (Routine)
5 September 1918	Peterborough, CA	daily rain	54.1 mm (2.1 in)	16.0 mm (0.6 in)	8 years	21 of 100 (Routine)
5 September 1918	Anticosti West Point, CA	daily rain	38.1 mm (1.5 in)	13.5 mm (0.5 in)	8 years	21 of 100 (Routine)
5 September 1918	Arhangelsk, RU	daily rain	22.6 mm (0.9 in)	15.6 mm (0.6 in)	16 years	20 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 1918

Records set or tied on this calendar date in each year from 1802 to 1918. 1918 had 109 records.

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

Records on 09-05 in each year
Year	Records
1802	2
1814	1
1833	1
1837	1
1843	1
1845	1
1846	1
1856	1
1859	2
1861	2
1866	1
1868	1
1869	2
1871	1
1872	1
1874	1
1876	1
1880	2
1883	2
1885	1
1887	1
1888	1
1889	1
1891	2
1892	3
1894	1
1895	4
1896	2
1897	7
1898	7
1899	2
1900	1
1901	4
1902	10
1903	14
1904	2
1905	17
1906	8
1907	11
1908	28
1909	16
1910	35
1911	23
1912	39
1913	24
1914	10
1915	27
1916	22
1917	28
1918	109
1919	60
1920	47
1921	82
1922	96
1923	204
1924	191
1925	298
1926	243
1927	71
1928	306
1929	371
1930	94
1931	381
1932	315
1933	361
1934	399
1935	432
1936	313
1937	291
1938	244
1939	317
1940	249
1941	470
1942	282
1943	593
1944	387
1945	447
1946	367
1947	557
1948	458
1949	421
1950	559
1951	251
1952	396
1953	728
1954	593
1955	517
1956	637
1957	323
1958	413
1959	367
1960	351
1961	727
1962	922
1963	554
1964	315
1965	899
1966	335
1967	1,092
1968	524
1969	556
1970	754
1971	736
1972	653
1973	669
1974	1,902
1975	388
1976	636
1977	344
1978	1,376
1979	611
1980	357
1981	448
1982	615
1983	1,181
1984	1,185
1985	1,231
1986	711
1987	618
1988	1,309
1989	522
1990	806
1991	598
1992	1,116
1993	635
1994	901
1995	1,168
1996	773
1997	1,460
1998	1,686
1999	1,215
2000	1,342
2001	626
2002	710
2003	860
2004	1,135
2005	502
2006	1,014
2007	1,344
2008	1,486
2009	765
2010	1,316
2011	1,186
2012	1,115
2013	798
2014	462
2015	846
2016	651
2017	778
2018	861
2019	724
2020	1,250
2021	424
2022	1,168
2023	1,166
2024	1,320
2025	695
2026	835

Download the Data

Data for records on 1918-09-05: 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).

Histogram of margins by which records were beaten on 5 September 1918
Margin	Records
0 to 10	79
10 to 20	12
20 to 30	4
30 to 40	4
40 to 50	2