Weather Records on 27 September 1918

58 weather records were set or tied worldwide on 27 September 1918. Highest significance: Karesuando, SE.

Key Facts for 27 September 1918

On 27 September 1918, 58 weather records were set or tied at long-record stations worldwide.
18 were record highs and 10 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 56 daily.
Karesuando set a monthly record daily precipitation of 38.3 mm (1.5 in) on 27 September 1918.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 453 records.

Record Map

58 stations

58 station records on 27 September 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Karesuando	Sweden	Record daily precipitation	38.3 mm (1.5 in)	45 of 100 (Notable)
Barkly East	South Africa	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record high maximum temperature	30.6 C (87.1 F)	31 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record high minimum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Quebec	Canada	Record daily precipitation	35.3 mm (1.4 in)	28 of 100 (Routine)
Bologna	Italy	Record daily precipitation	49.1 mm (1.9 in)	28 of 100 (Routine)
Wrixum/Fohr	Germany	Record daily precipitation	32.1 mm (1.3 in)	27 of 100 (Routine)
Koffiefontein (Pol)	South Africa	Record daily precipitation	26.4 mm (1.0 in)	27 of 100 (Routine)
Herschel	South Africa	Record daily precipitation	33.8 mm (1.3 in)	23 of 100 (Routine)
Montreal McGill	Canada	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Jamestown	South Africa	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Colesberg (Tnk)	South Africa	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Forbes (Camp Street)	Australia	Record high minimum temperature	16.7 C (62.1 F)	19 of 100 (Routine)
Saint John	Canada	Record daily precipitation	32.3 mm (1.3 in)	19 of 100 (Routine)
Griquatown (Tnk)	South Africa	Record daily precipitation	13.0 mm (0.5 in)	19 of 100 (Routine)
World Trade Ctr	United States	Record low minimum temperature	6.7 C (44.1 F)	19 of 100 (Routine)
Astoria	United States	Record high minimum temperature	15.6 C (60.1 F)	19 of 100 (Routine)
Philipstown (Tnk)	South Africa	Record daily precipitation	5.6 mm (0.22 in)	18 of 100 (Routine)
Weldon	United States	Record daily precipitation	10.2 mm (0.4 in)	18 of 100 (Routine)
New Westminster	Canada	Record high maximum temperature	26.7 C (80.1 F)	17 of 100 (Routine)
Point Escuminac	Canada	Record daily precipitation	20.8 mm (0.8 in)	17 of 100 (Routine)
Astoria	United States	Record high maximum temperature	28.3 C (82.9 F)	17 of 100 (Routine)
Philadelphia City	United States	Record low minimum temperature	7.2 C (45.0 F)	17 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	4.3 mm (0.17 in)	15 of 100 (Routine)
Alexandria (Pol)	South Africa	Record daily precipitation	11.4 mm (0.4 in)	15 of 100 (Routine)
Stornoway Airport	United Kingdom	Record low maximum temperature	9.4 C (48.9 F)	15 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	27.3 C (81.1 F)	14 of 100 (Routine)
Kingston Queens U	Canada	Record low minimum temperature	1.7 C (35.1 F)	12 of 100 (Routine)
Montreal McGill	Canada	Record low maximum temperature	7.8 C (46.0 F)	12 of 100 (Routine)
Montreal McGill	Canada	Record low minimum temperature	3.3 C (37.9 F)	11 of 100 (Routine)
Mahackala	Russia	Record high minimum temperature	21.4 C (70.5 F)	11 of 100 (Routine)
Cobar Post Office	Australia	Record high minimum temperature	17.8 C (64.0 F)	10 of 100 (Routine)
Anticosti West Point	Canada	Record daily precipitation	21.3 mm (0.8 in)	10 of 100 (Routine)
Bird Rocks	Canada	Record daily precipitation	45.7 mm (1.8 in)	10 of 100 (Routine)
Kologha (Bos)	South Africa	Record daily precipitation	15.2 mm (0.6 in)	10 of 100 (Routine)
Buffelsfontein 14	South Africa	Record daily precipitation	12.7 mm (0.5 in)	10 of 100 (Routine)
Morgantown 1	United States	Record low minimum temperature	1.7 C (35.1 F)	10 of 100 (Routine)
Fort Chipewyan	Canada	Record high minimum temperature	5.6 C (42.1 F)	9 of 100 (Routine)
Ellesmere	South Africa	Record daily precipitation	11.7 mm (0.5 in)	9 of 100 (Routine)
Barkly West (Tnk)	South Africa	Record daily precipitation	8.4 mm (0.33 in)	9 of 100 (Routine)
Sterkstroom (Pol)	South Africa	Record daily precipitation	9.1 mm (0.36 in)	8 of 100 (Routine)
Blue Hill Coop	United States	Record daily precipitation	15.7 mm (0.6 in)	8 of 100 (Routine)
Hingham (1)	United States	Record daily precipitation	20.3 mm (0.8 in)	8 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	32.2 C (90.0 F)	7 of 100 (Routine)
Minnedosa	Canada	Record high minimum temperature	10.6 C (51.1 F)	6 of 100 (Routine)
Stony Mountain	Canada	Record high minimum temperature	8.9 C (48.0 F)	6 of 100 (Routine)
Port Dover	Canada	Record low maximum temperature	10.0 C (50.0 F)	6 of 100 (Routine)
Newlands	South Africa	Record daily precipitation	7.1 mm (0.28 in)	6 of 100 (Routine)
Bathurst Gaol	Australia	Record high maximum temperature	26.1 C (79.0 F)	4 of 100 (Routine)
Portland Rfc City	United States	Record high maximum temperature	31.1 C (88.0 F)	4 of 100 (Routine)
Chattanooga Wb City	United States	Record low maximum temperature	16.1 C (61.0 F)	4 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record high minimum temperature	11.7 C (53.1 F)	3 of 100 (Routine)
San Diego Wbo	United States	Record high minimum temperature	19.4 C (66.9 F)	3 of 100 (Routine)
Wanaaring Post Office	Australia	Record daily precipitation	2.5 mm (0.10 in)	2 of 100 (Routine)
Bathurst Gaol	Australia	Record high minimum temperature	12.2 C (54.0 F)	2 of 100 (Routine)
St. Petersburg	Russia	Record daily precipitation	9.7 mm (0.38 in)	2 of 100 (Routine)
Houston Wb City	United States	Record low maximum temperature	22.2 C (72.0 F)	2 of 100 (Routine)
Storrs	United States	Record daily precipitation	11.2 mm (0.4 in)	1 of 100 (Routine)

Counts by Type and Timescale

58 records

Records set or tied on 27 September 1918 by type: Highest daily maximum 7, Lowest daily maximum 5, Highest daily minimum 11, Lowest daily minimum 5, Heaviest daily rainfall 30.

Records on 27 September 1918 by type
Record type	Records
Highest daily maximum	7
Lowest daily maximum	5
Highest daily minimum	11
Lowest daily minimum	5
Heaviest daily rainfall	30
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 September 1918 by timescale: all-time 0, monthly 2, daily 56.

How Much Records Were Beaten By

48 broken records

Margins by which the 48 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 22.1. Ties are not counted.

Top 20 by Significance

27 September 1918

Top 20 records on 27 September 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1918	Karesuando, SE	monthly rain	38.3 mm (1.5 in)	9.3 mm (0.37 in)	23 years	45 of 100 (Notable)
27 September 1918	Barkly East, ZA	daily rain	30.5 mm (1.2 in)	22.1 mm (0.9 in)	3 years	32 of 100 (Routine)
27 September 1918	Sydney (Observatory Hill), AU	daily high max	30.6 C (87.1 F)	2.8 C (5.0 F)	56 years	31 of 100 (Routine)
27 September 1918	Sydney (Observatory Hill), AU	daily high min	18.3 C (64.9 F)	2.2 C (4.0 F)	47 years	28 of 100 (Routine)
27 September 1918	Quebec, CA	daily rain	35.3 mm (1.4 in)	12.2 mm (0.5 in)	41 years	28 of 100 (Routine)
27 September 1918	Bologna, IT	daily rain	49.1 mm (1.9 in)	16.6 mm (0.7 in)	19 years	28 of 100 (Routine)
27 September 1918	Wrixum/Fohr, DE	daily rain	32.1 mm (1.3 in)	13.3 mm (0.5 in)	9 years	27 of 100 (Routine)
27 September 1918	Koffiefontein (Pol), ZA	daily rain	26.4 mm (1.0 in)	13.2 mm (0.5 in)	24 years	27 of 100 (Routine)
27 September 1918	Herschel, ZA	daily rain	33.8 mm (1.3 in)	12.5 mm (0.5 in)	24 years	23 of 100 (Routine)
27 September 1918	Montreal McGill, CA	daily rain	21.6 mm (0.9 in)	7.9 mm (0.31 in)	33 years	20 of 100 (Routine)
27 September 1918	Jamestown, ZA	daily rain	13.7 mm (0.5 in)	7.9 mm (0.31 in)	35 years	20 of 100 (Routine)
27 September 1918	Colesberg (Tnk), ZA	daily rain	15.7 mm (0.6 in)	8.3 mm (0.33 in)	38 years	20 of 100 (Routine)
27 September 1918	Forbes (Camp Street), AU	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	39 years	19 of 100 (Routine)
27 September 1918	Saint John, CA	daily rain	32.3 mm (1.3 in)	2.6 mm (0.10 in)	45 years	19 of 100 (Routine)
27 September 1918	Griquatown (Tnk), ZA	daily rain	13.0 mm (0.5 in)	12.0 mm (0.5 in)	4 years	19 of 100 (Routine)
27 September 1918	World Trade Ctr, US	daily low min	6.7 C (44.1 F)	1.1 C (2.0 F)	41 years	19 of 100 (Routine)
27 September 1918	Astoria, US	daily high min	15.6 C (60.1 F)	1.7 C (3.1 F)	30 years	19 of 100 (Routine)
27 September 1918	Philipstown (Tnk), ZA	daily rain	5.6 mm (0.22 in)	5.6 mm (0.22 in)	39 years	18 of 100 (Routine)
27 September 1918	Weldon, US	daily rain	10.2 mm (0.4 in)	2.3 mm (0.09 in)	45 years	18 of 100 (Routine)
27 September 1918	New Westminster, CA	daily high max	26.7 C (80.1 F)	4.5 C (8.1 F)	5 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

1799 to 1918

Records set or tied on this calendar date in each year from 1799 to 1918. 1918 had 58 records.

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

Records on 09-27 in each year
Year	Records
1799	1
1828	1
1836	2
1847	1
1851	1
1854	2
1855	2
1859	2
1866	2
1867	3
1874	1
1875	1
1877	2
1880	1
1881	4
1882	1
1885	5
1887	1
1890	3
1891	1
1892	1
1893	1
1894	5
1895	6
1896	1
1897	2
1898	4
1899	1
1900	5
1901	3
1902	12
1903	7
1904	12
1905	21
1906	21
1907	9
1908	36
1909	17
1910	20
1911	31
1912	25
1913	27
1914	24
1915	80
1916	57
1917	41
1918	58
1919	45
1920	54
1921	26
1922	111
1923	125
1924	115
1925	129
1926	581
1927	244
1928	288
1929	225
1930	178
1931	222
1932	194
1933	559
1934	298
1935	319
1936	435
1937	309
1938	366
1939	572
1940	706
1941	257
1942	1,353
1943	503
1944	323
1945	475
1946	387
1947	813
1948	405
1949	407
1950	223
1951	480
1952	539
1953	567
1954	507
1955	386
1956	825
1957	644
1958	585
1959	582
1960	337
1961	376
1962	352
1963	849
1964	724
1965	688
1966	426
1967	502
1968	286
1969	233
1970	773
1971	762
1972	989
1973	1,031
1974	408
1975	790
1976	905
1977	852
1978	773
1979	741
1980	559
1981	680
1982	1,076
1983	791
1984	1,297
1985	661
1986	1,772
1987	1,013
1988	494
1989	852
1990	379
1991	894
1992	659
1993	727
1994	764
1995	698
1996	1,468
1997	730
1998	1,774
1999	1,059
2000	1,031
2001	980
2002	992
2003	830
2004	665
2005	1,061
2006	596
2007	1,091
2008	659
2009	987
2010	1,153
2011	965
2012	624
2013	823
2014	813
2015	664
2016	600
2017	891
2018	600
2019	755
2020	659
2021	893
2022	642
2023	747
2024	1,449
2025	272
2026	358

Download the Data

Data for records on 1918-09-27: 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	31
5 to 10	10
10 to 15	5
15 to 20	1
20 to 25	1