Weather Records on 18 August 1915

60 weather records were set or tied worldwide on 18 August 1915. Highest significance: Little Rock St Capitol, US.

Key Facts for 18 August 1915

On 18 August 1915, 60 weather records were set or tied at long-record stations worldwide.
4 were record highs and 36 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 59 daily.
Little Rock St Capitol set a daily record precipitation of 65.3 mm (2.6 in) on 18 August 1915.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 443 records.

Record Map

60 stations

60 station records on 18 August 1915 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1915: highest significance records shown on the map
Station	Country	Type	Value	Significance
Little Rock St Capitol	United States	Record daily precipitation	65.3 mm (2.6 in)	28 of 100 (Routine)
Bic	Canada	Record daily precipitation	33.0 mm (1.3 in)	25 of 100 (Routine)
Pointe Au Pere	Canada	Record daily precipitation	29.0 mm (1.1 in)	22 of 100 (Routine)
Atlantic City Marina	United States	Record low minimum temperature	12.2 C (54.0 F)	22 of 100 (Routine)
Edmonton	Canada	Record daily precipitation	68.1 mm (2.7 in)	21 of 100 (Routine)
Malvern	United States	Record daily precipitation	38.1 mm (1.5 in)	21 of 100 (Routine)
Toledo Blade	United States	Record low minimum temperature	10.0 C (50.0 F)	21 of 100 (Routine)
Richmond C/K (Tnk)	South Africa	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Karlshamn	Sweden	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Chatham	Canada	Record low maximum temperature	15.0 C (59.0 F)	20 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low maximum temperature	18.9 C (66.0 F)	20 of 100 (Routine)
Stratford	Canada	Record low minimum temperature	3.9 C (39.0 F)	19 of 100 (Routine)
Pointe Au Pere	Canada	Record low maximum temperature	10.6 C (51.1 F)	18 of 100 (Routine)
Truro	Canada	Record low maximum temperature	15.0 C (59.0 F)	18 of 100 (Routine)
Little Rock St Capitol	United States	Record low maximum temperature	25.6 C (78.1 F)	18 of 100 (Routine)
Edmonton	Canada	Record high minimum temperature	16.1 C (61.0 F)	17 of 100 (Routine)
Kingston Queens U	Canada	Record low minimum temperature	7.8 C (46.0 F)	17 of 100 (Routine)
Beaufort West (Met)	South Africa	Record daily precipitation	1.3 mm (0.05 in)	17 of 100 (Routine)
Chattanooga Wb City	United States	Record daily precipitation	19.8 mm (0.8 in)	17 of 100 (Routine)
Ny City Cntrl Park	United States	Record low minimum temperature	12.8 C (55.0 F)	17 of 100 (Routine)
Dalhousie	Canada	Record daily precipitation	39.4 mm (1.6 in)	16 of 100 (Routine)
Walsingham 1	South Africa	Record daily precipitation	4.1 mm (0.16 in)	16 of 100 (Routine)
Sterling	South Africa	Record daily precipitation	1.5 mm (0.06 in)	16 of 100 (Routine)
Sevastopol',Mgs	Ukraine	Record daily precipitation	16.4 mm (0.6 in)	16 of 100 (Routine)
Philadelphia City	United States	Record low minimum temperature	14.4 C (57.9 F)	16 of 100 (Routine)
Barrie	Canada	Record low minimum temperature	7.2 C (45.0 F)	15 of 100 (Routine)
Fredericton Unb	Canada	Record low maximum temperature	15.6 C (60.1 F)	15 of 100 (Routine)
Calgary Int'l A	Canada	Record high minimum temperature	12.2 C (54.0 F)	14 of 100 (Routine)
Windsor Riverside	Canada	Record low maximum temperature	18.9 C (66.0 F)	14 of 100 (Routine)
Yarmouth	Canada	Record low maximum temperature	15.6 C (60.1 F)	14 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record daily precipitation	10.2 mm (0.4 in)	14 of 100 (Routine)
Wellwood	South Africa	Record daily precipitation	7.4 mm (0.29 in)	14 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low maximum temperature	19.4 C (66.9 F)	14 of 100 (Routine)
Welland	Canada	Record low minimum temperature	8.3 C (46.9 F)	13 of 100 (Routine)
London South	Canada	Record low minimum temperature	6.1 C (43.0 F)	13 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	20.0 C (68.0 F)	13 of 100 (Routine)
Southampton	Canada	Record low maximum temperature	17.2 C (63.0 F)	12 of 100 (Routine)
Morgantown 1	United States	Record low minimum temperature	8.9 C (48.0 F)	12 of 100 (Routine)
La Crosse Wb City	United States	Record low minimum temperature	9.4 C (48.9 F)	12 of 100 (Routine)
Madison Wb City	United States	Record low minimum temperature	10.6 C (51.1 F)	12 of 100 (Routine)
Medicine Hat A	Canada	Record high minimum temperature	16.7 C (62.1 F)	11 of 100 (Routine)
Beatrice	Canada	Record low minimum temperature	3.9 C (39.0 F)	11 of 100 (Routine)
Koebenhavn - Meteorologisk Ins	Denmark	Record daily precipitation	7.6 mm (0.30 in)	10 of 100 (Routine)
Gorki	Belarus	Record daily precipitation	11.1 mm (0.4 in)	9 of 100 (Routine)
Munchen-Nymphenburg	Germany	Record low maximum temperature	15.8 C (60.4 F)	9 of 100 (Routine)
Cape May 2 NW	United States	Record low minimum temperature	12.8 C (55.0 F)	9 of 100 (Routine)
Vineland	United States	Record low minimum temperature	10.0 C (50.0 F)	9 of 100 (Routine)
Concordia ASOS	United States	Record low maximum temperature	21.1 C (70.0 F)	9 of 100 (Routine)
Ottawa	Canada	Record low minimum temperature	8.9 C (48.0 F)	8 of 100 (Routine)
Baltimore Customs House	United States	Record low minimum temperature	13.3 C (55.9 F)	8 of 100 (Routine)
Buchan	Australia	Record daily precipitation	7.4 mm (0.29 in)	7 of 100 (Routine)
Anticosti SW Point	Canada	Record low minimum temperature	4.4 C (39.9 F)	5 of 100 (Routine)
Willowmore	South Africa	Record daily precipitation	8.1 mm (0.32 in)	5 of 100 (Routine)
Bloukrans (Bos)	South Africa	Record daily precipitation	6.9 mm (0.27 in)	4 of 100 (Routine)
World Trade Ctr	United States	Record low minimum temperature	12.8 C (55.0 F)	3 of 100 (Routine)
Gravenhurst	Canada	Record low minimum temperature	4.4 C (39.9 F)	2 of 100 (Routine)
Owen Sound	Canada	Record low minimum temperature	5.6 C (42.1 F)	2 of 100 (Routine)
Houston Wb City	United States	Record high minimum temperature	24.4 C (75.9 F)	2 of 100 (Routine)
Dalhousie	Canada	Record low maximum temperature	14.4 C (57.9 F)	1 of 100 (Routine)
Haparanda	Sweden	Record low maximum temperature	12.0 C (53.6 F)	0 of 100 (Routine)

Counts by Type and Timescale

60 records

Records set or tied on 18 August 1915 by type: Lowest daily maximum 15, Highest daily minimum 4, Lowest daily minimum 21, Heaviest daily rainfall 20.

Records on 18 August 1915 by type
Record type	Records
Highest daily maximum	0
Lowest daily maximum	15
Highest daily minimum	4
Lowest daily minimum	21
Heaviest daily rainfall	20
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1915 by timescale: all-time 0, monthly 1, daily 59.

How Much Records Were Beaten By

54 broken records

Margins by which the 54 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 24.4. Ties are not counted.

Top 20 by Significance

18 August 1915

Top 20 records on 18 August 1915 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1915	Little Rock St Capitol, US	daily rain	65.3 mm (2.6 in)	24.4 mm (1.0 in)	26 years	28 of 100 (Routine)
18 August 1915	Bic, CA	daily rain	33.0 mm (1.3 in)	10.1 mm (0.4 in)	27 years	25 of 100 (Routine)
18 August 1915	Pointe Au Pere, CA	daily rain	29.0 mm (1.1 in)	11.7 mm (0.5 in)	6 years	22 of 100 (Routine)
18 August 1915	Atlantic City Marina, US	daily low min	12.2 C (54.0 F)	1.7 C (3.1 F)	40 years	22 of 100 (Routine)
18 August 1915	Edmonton, CA	monthly rain	68.1 mm (2.7 in)	5.4 mm (0.21 in)	3 years	21 of 100 (Routine)
18 August 1915	Malvern, US	daily rain	38.1 mm (1.5 in)	22.9 mm (0.9 in)	12 years	21 of 100 (Routine)
18 August 1915	Toledo Blade, US	daily low min	10.0 C (50.0 F)	1.7 C (3.1 F)	41 years	21 of 100 (Routine)
18 August 1915	Richmond C/K (Tnk), ZA	daily rain	11.4 mm (0.4 in)	11.4 mm (0.4 in)	36 years	20 of 100 (Routine)
18 August 1915	Karlshamn, SE	daily rain	18.3 mm (0.7 in)	4.5 mm (0.18 in)	54 years	20 of 100 (Routine)
18 August 1915	Chatham, CA	daily low max	15.0 C (59.0 F)	2.8 C (5.0 F)	35 years	20 of 100 (Routine)
18 August 1915	Lexington Bluegrass AP, US	daily low max	18.9 C (66.0 F)	4.4 C (7.9 F)	12 years	20 of 100 (Routine)
18 August 1915	Stratford, CA	daily low min	3.9 C (39.0 F)	1.1 C (2.0 F)	41 years	19 of 100 (Routine)
18 August 1915	Pointe Au Pere, CA	daily low max	10.6 C (51.1 F)	1.6 C (2.9 F)	35 years	18 of 100 (Routine)
18 August 1915	Truro, CA	daily low max	15.0 C (59.0 F)	2.2 C (4.0 F)	28 years	18 of 100 (Routine)
18 August 1915	Little Rock St Capitol, US	daily low max	25.6 C (78.1 F)	1.6 C (2.9 F)	35 years	18 of 100 (Routine)
18 August 1915	Edmonton, CA	daily high min	16.1 C (61.0 F)	2.8 C (5.0 F)	20 years	17 of 100 (Routine)
18 August 1915	Kingston Queens U, CA	daily low min	7.8 C (46.0 F)	1.6 C (2.9 F)	32 years	17 of 100 (Routine)
18 August 1915	Beaufort West (Met), ZA	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	36 years	17 of 100 (Routine)
18 August 1915	Chattanooga Wb City, US	daily rain	19.8 mm (0.8 in)	7.6 mm (0.30 in)	27 years	17 of 100 (Routine)
18 August 1915	Ny City Cntrl Park, US	daily low min	12.8 C (55.0 F)	1.1 C (2.0 F)	33 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

1797 to 1915

Records set or tied on this calendar date in each year from 1797 to 1915. 1915 had 60 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 1915-08-18: 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).

Margin	Records
0 to 5	45
5 to 10	2
10 to 15	5
15 to 20	0
20 to 25	2