Weather Records on 18 August 1965

525 weather records were set or tied worldwide on 18 August 1965. Highest significance: Amarpara, IN.

Key Facts for 18 August 1965

On 18 August 1965, 525 weather records were set or tied at long-record stations worldwide.
152 were record highs and 105 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 517 daily.
Amarpara set a daily record precipitation of 138.2 mm (5.4 in) on 18 August 1965.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 440 records.

Record Map

525 stations

525 station records on 18 August 1965 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1965: highest significance records shown on the map
Station	Country	Type	Value	Significance
Amarpara	India	Record daily precipitation	138.2 mm (5.4 in)	62 of 100 (Major)
Kalvan	India	Record daily precipitation	135.6 mm (5.3 in)	59 of 100 (Notable)
Rush 1N	United States	Record daily precipitation	63.5 mm (2.5 in)	59 of 100 (Notable)
Wells	United States	Record daily precipitation	27.9 mm (1.1 in)	58 of 100 (Notable)
Wandiwash	India	Record daily precipitation	201.0 mm (7.9 in)	57 of 100 (Notable)
Kassler	United States	Record daily precipitation	48.5 mm (1.9 in)	56 of 100 (Notable)
Franklinton	United States	Record daily precipitation	133.1 mm (5.2 in)	54 of 100 (Notable)
Deal Island	Australia	Record daily precipitation	27.2 mm (1.1 in)	46 of 100 (Notable)
Chilliwack	Canada	Record high minimum temperature	21.7 C (71.1 F)	45 of 100 (Notable)
Mineral	United States	Record daily precipitation	27.7 mm (1.1 in)	44 of 100 (Notable)
Ft Lewis	United States	Record daily precipitation	30.2 mm (1.2 in)	43 of 100 (Notable)
Little Falls Mill St	United States	Record daily precipitation	56.9 mm (2.2 in)	41 of 100 (Notable)
Wendover AP AWOS	United States	Record low maximum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Malegaon	India	Record daily precipitation	97.0 mm (3.8 in)	37 of 100 (Notable)
Eureka	United States	Record low maximum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Los Alamos	United States	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
Markovo	Russia	Record daily precipitation	33.6 mm (1.3 in)	36 of 100 (Notable)
Conception	United States	Record daily precipitation	62.5 mm (2.5 in)	36 of 100 (Notable)
Florence 8 NE	United States	Record daily precipitation	62.0 mm (2.4 in)	36 of 100 (Notable)
Snake Creek Powerhouse	United States	Record low maximum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Jammalamadugu	India	Record daily precipitation	39.6 mm (1.6 in)	35 of 100 (Notable)
Hiranpur	India	Record daily precipitation	123.2 mm (4.9 in)	35 of 100 (Notable)
Hampton	United States	Record daily precipitation	45.7 mm (1.8 in)	35 of 100 (Notable)
Lovelock	United States	Record low maximum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Mc Connellsville Lk 7	United States	Record high maximum temperature	36.1 C (97.0 F)	34 of 100 (Routine)
Elberta	United States	Record low maximum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Leamington	Canada	Record daily precipitation	45.0 mm (1.8 in)	33 of 100 (Routine)
Logan	United States	Record high maximum temperature	37.2 C (99.0 F)	32 of 100 (Routine)
Lady Barron (Franklin Parade)	Australia	Record daily precipitation	26.9 mm (1.1 in)	31 of 100 (Routine)
Stuttgart	Germany	Record daily precipitation	26.0 mm (1.0 in)	31 of 100 (Routine)
Hansot	India	Record daily precipitation	115.0 mm (4.5 in)	31 of 100 (Routine)
Elatma	Russia	Record low maximum temperature	14.6 C (58.3 F)	30 of 100 (Routine)
Vernonia	United States	Record high minimum temperature	12.8 C (55.0 F)	30 of 100 (Routine)
La Sal	United States	Record low maximum temperature	21.1 C (70.0 F)	30 of 100 (Routine)
Vanavara	Russia	Record daily precipitation	25.2 mm (1.0 in)	29 of 100 (Routine)
Covington	United States	Record high minimum temperature	22.2 C (72.0 F)	29 of 100 (Routine)
Vaughn	United States	Record daily precipitation	37.3 mm (1.5 in)	29 of 100 (Routine)
Utah Lake Lehi	United States	Record low maximum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Vayalpad	India	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Poretskoye	Russia	Record low maximum temperature	13.6 C (56.5 F)	28 of 100 (Routine)
Cedaredge	United States	Record low maximum temperature	22.8 C (73.0 F)	28 of 100 (Routine)
Rifle	United States	Record low maximum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Marion	United States	Record daily precipitation	88.9 mm (3.5 in)	28 of 100 (Routine)
Deseret	United States	Record low maximum temperature	23.9 C (75.0 F)	28 of 100 (Routine)
Glenwood Spgs #2	United States	Record low maximum temperature	21.1 C (70.0 F)	27 of 100 (Routine)
Laurel 3 W	United States	Record high maximum temperature	36.1 C (97.0 F)	27 of 100 (Routine)
Beaufort Wwtp	United States	Record daily precipitation	50.8 mm (2.0 in)	27 of 100 (Routine)
Heber	United States	Record low maximum temperature	19.4 C (66.9 F)	27 of 100 (Routine)
Ibapah	United States	Record low maximum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Park Valley	United States	Record low maximum temperature	18.3 C (64.9 F)	27 of 100 (Routine)
Washington	United States	Record high maximum temperature	37.8 C (100.0 F)	27 of 100 (Routine)
Pablillo (Smn)	Mexico	Record low minimum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Boca	United States	Record daily precipitation	28.7 mm (1.1 in)	26 of 100 (Routine)
Rangely 1E	United States	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
Rye Patch Dam	United States	Record low maximum temperature	25.6 C (78.1 F)	26 of 100 (Routine)
Duchesne	United States	Record low maximum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Santaquin Chlorinator	United States	Record low maximum temperature	23.9 C (75.0 F)	26 of 100 (Routine)
Buckhannon	United States	Record high maximum temperature	33.3 C (91.9 F)	26 of 100 (Routine)
Bella Coola	Canada	Record high maximum temperature	32.8 C (91.0 F)	25 of 100 (Routine)
Baia Mare	Romania	Record low minimum temperature	8.8 C (47.8 F)	25 of 100 (Routine)

Counts by Type and Timescale

525 records

Records set or tied on 18 August 1965 by type: Highest daily maximum 77, Lowest daily maximum 87, Highest daily minimum 75, Lowest daily minimum 18, Heaviest daily rainfall 268.

Records on 18 August 1965 by type
Record type	Records
Highest daily maximum	77
Lowest daily maximum	87
Highest daily minimum	75
Lowest daily minimum	18
Heaviest daily rainfall	268
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1965 by timescale: all-time 1, monthly 7, daily 517.

How Much Records Were Beaten By

417 broken records

Margins by which the 417 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 100.6. Ties are not counted.

Top 20 by Significance

18 August 1965

Top 20 records on 18 August 1965 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1965	Amarpara, IN	daily rain	138.2 mm (5.4 in)	92.5 mm (3.6 in)	58 years	62 of 100 (Major)
18 August 1965	Kalvan, IN	daily rain	135.6 mm (5.3 in)	44.7 mm (1.8 in)	59 years	59 of 100 (Notable)
18 August 1965	Rush 1N, US	daily rain	63.5 mm (2.5 in)	48.0 mm (1.9 in)	48 years	59 of 100 (Notable)
18 August 1965	Wells, US	monthly rain	27.9 mm (1.1 in)	11.4 mm (0.4 in)	24 years	58 of 100 (Notable)
18 August 1965	Wandiwash, IN	monthly rain	201.0 mm (7.9 in)	40.2 mm (1.6 in)	62 years	57 of 100 (Notable)
18 August 1965	Kassler, US	daily rain	48.5 mm (1.9 in)	30.5 mm (1.2 in)	43 years	56 of 100 (Notable)
18 August 1965	Franklinton, US	daily rain	133.1 mm (5.2 in)	100.6 mm (4.0 in)	30 years	54 of 100 (Notable)
18 August 1965	Deal Island, AU	daily rain	27.2 mm (1.1 in)	7.4 mm (0.29 in)	76 years	46 of 100 (Notable)
18 August 1965	Chilliwack, CA	all-time high min	21.7 C (71.1 F)	0.6 C (1.1 F)	53 years	45 of 100 (Notable)
18 August 1965	Mineral, US	daily rain	27.7 mm (1.1 in)	22.9 mm (0.9 in)	7 years	44 of 100 (Notable)
18 August 1965	Ft Lewis, US	daily rain	30.2 mm (1.2 in)	18.8 mm (0.7 in)	42 years	43 of 100 (Notable)
18 August 1965	Little Falls Mill St, US	daily rain	56.9 mm (2.2 in)	31.2 mm (1.2 in)	27 years	41 of 100 (Notable)
18 August 1965	Wendover AP AWOS, US	daily low max	21.7 C (71.1 F)	6.1 C (11.0 F)	52 years	38 of 100 (Notable)
18 August 1965	Malegaon, IN	daily rain	97.0 mm (3.8 in)	37.6 mm (1.5 in)	20 years	37 of 100 (Notable)
18 August 1965	Eureka, US	daily low max	20.6 C (69.1 F)	2.7 C (4.9 F)	75 years	37 of 100 (Notable)
18 August 1965	Los Alamos, US	daily rain	43.7 mm (1.7 in)	17.8 mm (0.7 in)	42 years	37 of 100 (Notable)
18 August 1965	Markovo, RU	daily rain	33.6 mm (1.3 in)	16.9 mm (0.7 in)	4 years	36 of 100 (Notable)
18 August 1965	Conception, US	daily rain	62.5 mm (2.5 in)	30.5 mm (1.2 in)	35 years	36 of 100 (Notable)
18 August 1965	Florence 8 NE, US	daily rain	62.0 mm (2.4 in)	33.6 mm (1.3 in)	43 years	36 of 100 (Notable)
18 August 1965	Snake Creek Powerhouse, US	daily low max	17.8 C (64.0 F)	5.0 C (9.0 F)	48 years	36 of 100 (Notable)

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 1965

Records set or tied on this calendar date in each year from 1797 to 1965. 1965 had 525 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 1965-08-18: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	396
20 to 40	15
40 to 60	4
60 to 80	0
80 to 100	1
100 to 120	1