Weather Records on 18 August 1914

37 weather records were set or tied worldwide on 18 August 1914. Highest significance: Kei Road (Pol), ZA.

Key Facts for 18 August 1914

On 18 August 1914, 37 weather records were set or tied at long-record stations worldwide.
13 were record highs and 6 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 37 daily.
Kei Road (Pol) set a daily record precipitation of 49.3 mm (1.9 in) on 18 August 1914.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 443 records.

Record Map

37 stations

37 station records on 18 August 1914 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1914: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kei Road (Pol)	South Africa	Record daily precipitation	49.3 mm (1.9 in)	49 of 100 (Notable)
Alicedale	South Africa	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Peterborough	Canada	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Arkona	Canada	Record daily precipitation	57.2 mm (2.3 in)	34 of 100 (Routine)
Maccue	Canada	Record daily precipitation	45.0 mm (1.8 in)	26 of 100 (Routine)
Madison Wb City	United States	Record daily precipitation	38.9 mm (1.5 in)	26 of 100 (Routine)
Aurora	Canada	Record daily precipitation	30.5 mm (1.2 in)	25 of 100 (Routine)
Steynsburg	South Africa	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Calitzdorp Pol	South Africa	Record daily precipitation	6.6 mm (0.26 in)	19 of 100 (Routine)
Washington	United States	Record high maximum temperature	34.4 C (93.9 F)	19 of 100 (Routine)
Darwin Post Office	Australia	Record daily precipitation	1.3 mm (0.05 in)	18 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	10.2 mm (0.4 in)	18 of 100 (Routine)
Melbourne Regional Office	Australia	Record high minimum temperature	13.3 C (55.9 F)	16 of 100 (Routine)
Welland	Canada	Record high minimum temperature	21.7 C (71.1 F)	16 of 100 (Routine)
Brantford	Canada	Record daily precipitation	30.0 mm (1.2 in)	13 of 100 (Routine)
Durham	United Kingdom	Record low minimum temperature	5.6 C (42.1 F)	13 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high maximum temperature	32.8 C (91.0 F)	13 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	32.8 C (91.0 F)	13 of 100 (Routine)
Grahamstown	South Africa	Record daily precipitation	11.2 mm (0.4 in)	12 of 100 (Routine)
Willowmore	South Africa	Record daily precipitation	6.6 mm (0.26 in)	11 of 100 (Routine)
Koffiefontein (Pol)	South Africa	Record daily precipitation	5.1 mm (0.20 in)	11 of 100 (Routine)
Cet Central England	United Kingdom	Record low minimum temperature	7.1 C (44.8 F)	10 of 100 (Routine)
Riversdale	South Africa	Record daily precipitation	6.4 mm (0.25 in)	9 of 100 (Routine)
Barkly East	South Africa	Record daily precipitation	8.6 mm (0.34 in)	9 of 100 (Routine)
Vineland	United States	Record high maximum temperature	33.9 C (93.0 F)	9 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	35.0 C (95.0 F)	9 of 100 (Routine)
Sacramento 5 ESE	United States	Record low maximum temperature	23.9 C (75.0 F)	8 of 100 (Routine)
Watford	Canada	Record daily precipitation	17.8 mm (0.7 in)	7 of 100 (Routine)
Haparanda	Sweden	Record low maximum temperature	12.0 C (53.6 F)	7 of 100 (Routine)
Toledo Blade	United States	Record high minimum temperature	22.8 C (73.0 F)	5 of 100 (Routine)
Sheffield	United Kingdom	Record low minimum temperature	8.3 C (46.9 F)	2 of 100 (Routine)
Madison Wb City	United States	Record high maximum temperature	32.2 C (90.0 F)	2 of 100 (Routine)
Barrie	Canada	Record high minimum temperature	18.9 C (66.0 F)	1 of 100 (Routine)
Windsor Riverside	Canada	Record high minimum temperature	21.7 C (71.1 F)	1 of 100 (Routine)
Brantford	Canada	Record high minimum temperature	19.4 C (66.9 F)	1 of 100 (Routine)
Dalhousie	Canada	Record low maximum temperature	14.4 C (57.9 F)	1 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high minimum temperature	23.9 C (75.0 F)	1 of 100 (Routine)

Counts by Type and Timescale

37 records

Records set or tied on 18 August 1914 by type: Highest daily maximum 6, Lowest daily maximum 3, Highest daily minimum 7, Lowest daily minimum 3, Heaviest daily rainfall 18.

Records on 18 August 1914 by type
Record type	Records
Highest daily maximum	6
Lowest daily maximum	3
Highest daily minimum	7
Lowest daily minimum	3
Heaviest daily rainfall	18
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1914 by timescale: all-time 0, monthly 0, daily 37.

How Much Records Were Beaten By

30 broken records

Margins by which the 30 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 46.3. Ties are not counted.

Top 20 by Significance

18 August 1914

Top 20 records on 18 August 1914 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1914	Kei Road (Pol), ZA	daily rain	49.3 mm (1.9 in)	46.3 mm (1.8 in)	22 years	49 of 100 (Notable)
18 August 1914	Alicedale, ZA	daily rain	29.2 mm (1.1 in)	24.4 mm (1.0 in)	25 years	40 of 100 (Notable)
18 August 1914	Peterborough, CA	daily rain	34.5 mm (1.4 in)	18.8 mm (0.7 in)	46 years	38 of 100 (Notable)
18 August 1914	Arkona, CA	daily rain	57.2 mm (2.3 in)	35.6 mm (1.4 in)	4 years	34 of 100 (Routine)
18 August 1914	Maccue, CA	daily rain	45.0 mm (1.8 in)	24.7 mm (1.0 in)	4 years	26 of 100 (Routine)
18 August 1914	Madison Wb City, US	daily rain	38.9 mm (1.5 in)	17.1 mm (0.7 in)	35 years	26 of 100 (Routine)
18 August 1914	Aurora, CA	daily rain	30.5 mm (1.2 in)	15.8 mm (0.6 in)	30 years	25 of 100 (Routine)
18 August 1914	Steynsburg, ZA	daily rain	18.0 mm (0.7 in)	9.9 mm (0.39 in)	26 years	20 of 100 (Routine)
18 August 1914	Calitzdorp Pol, ZA	daily rain	6.6 mm (0.26 in)	5.1 mm (0.20 in)	26 years	19 of 100 (Routine)
18 August 1914	Washington, US	daily high max	34.4 C (93.9 F)	0.5 C (0.9 F)	41 years	19 of 100 (Routine)
18 August 1914	Darwin Post Office, AU	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	44 years	18 of 100 (Routine)
18 August 1914	Ladismith (Tnk), ZA	daily rain	10.2 mm (0.4 in)	5.1 mm (0.20 in)	27 years	18 of 100 (Routine)
18 August 1914	Melbourne Regional Office, AU	daily high min	13.3 C (55.9 F)	0.8 C (1.4 F)	28 years	16 of 100 (Routine)
18 August 1914	Welland, CA	daily high min	21.7 C (71.1 F)	1.7 C (3.1 F)	29 years	16 of 100 (Routine)
18 August 1914	Brantford, CA	daily rain	30.0 mm (1.2 in)	12.0 mm (0.5 in)	1 year	13 of 100 (Routine)
18 August 1914	Durham, GB	daily low min	5.6 C (42.1 F)	0.9 C (1.6 F)	25 years	13 of 100 (Routine)
18 August 1914	Cleveland 2717 Euclid, US	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	21 years	13 of 100 (Routine)
18 August 1914	Toledo Blade, US	daily high max	32.8 C (91.0 F)	0.6 C (1.1 F)	29 years	13 of 100 (Routine)
18 August 1914	Grahamstown, ZA	daily rain	11.2 mm (0.4 in)	3.1 mm (0.12 in)	22 years	12 of 100 (Routine)
18 August 1914	Willowmore, ZA	daily rain	6.6 mm (0.26 in)	1.0 mm (0.04 in)	25 years	11 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

1797 to 1914

Records set or tied on this calendar date in each year from 1797 to 1914. 1914 had 37 records.

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

Records on 08-18 in each year
Year	Records
1797	2
1805	1
1816	1
1827	1
1829	1
1830	1
1833	1
1841	1
1844	1
1845	3
1846	1
1847	1
1849	1
1851	1
1852	1
1853	1
1854	2
1855	1
1856	1
1861	1
1864	2
1866	1
1868	2
1869	1
1870	2
1872	1
1873	1
1875	3
1876	1
1878	1
1879	2
1883	3
1885	3
1886	3
1887	3
1888	2
1889	1
1890	1
1891	2
1892	6
1893	4
1894	4
1895	1
1898	4
1899	6
1900	2
1901	10
1902	8
1903	6
1904	8
1905	10
1906	40
1907	7
1908	21
1909	24
1910	16
1911	11
1912	21
1913	43
1914	37
1915	60
1916	71
1917	70
1918	53
1919	34
1920	51
1921	39
1922	129
1923	90
1924	225
1925	300
1926	168
1927	269
1928	141
1929	181
1930	150
1931	241
1932	382
1933	431
1934	638
1935	424
1936	766
1937	308
1938	243
1939	381
1940	434
1941	467
1942	333
1943	738
1944	325
1945	400
1946	416
1947	958
1948	315
1949	393
1950	683
1951	355
1952	405
1953	323
1954	622
1955	795
1956	580
1957	380
1958	580
1959	537
1960	599
1961	415
1962	428
1963	760
1964	443
1965	525
1966	573
1967	623
1968	795
1969	530
1970	597
1971	381
1972	493
1973	734
1974	639
1975	844
1976	917
1977	1,112
1978	854
1979	1,309
1980	771
1981	1,386
1982	563
1983	1,420
1984	600
1985	765
1986	861
1987	1,609
1988	1,351
1989	952
1990	920
1991	533
1992	1,497
1993	706
1994	1,027
1995	1,882
1996	760
1997	1,191
1998	923
1999	888
2000	1,183
2001	1,036
2002	1,306
2003	860
2004	1,050
2005	865
2006	842
2007	1,116
2008	1,265
2009	839
2010	1,167
2011	1,239
2012	1,247
2013	752
2014	751
2015	880
2016	704
2017	565
2018	462
2019	615
2020	1,541
2021	1,118
2022	1,237
2023	1,094
2024	696
2025	455
2026	545

Download the Data

Data for records on 1914-08-18: 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 18 August 1914
Margin	Records
0 to 10	22
10 to 20	4
20 to 30	2
30 to 40	1
40 to 50	1