Weather Records on 18 August 1969

530 weather records were set or tied worldwide on 18 August 1969. Highest significance: Bay Minette, US.

Key Facts for 18 August 1969

On 18 August 1969, 530 weather records were set or tied at long-record stations worldwide.
231 were record highs and 123 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 18 monthly and 511 daily.
Bay Minette set a monthly record daily precipitation of 136.9 mm (5.4 in) on 18 August 1969.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 440 records.

Record Map

530 stations

530 station records on 18 August 1969 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1969: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bay Minette	United States	Record daily precipitation	136.9 mm (5.4 in)	61 of 100 (Major)
Huntingdon	Canada	Record daily precipitation	74.4 mm (2.9 in)	60 of 100 (Major)
Perkins	Canada	Record daily precipitation	63.5 mm (2.5 in)	59 of 100 (Notable)
Kapuskasing Cda	Canada	Record daily precipitation	58.4 mm (2.3 in)	58 of 100 (Notable)
Mettupalayam	India	Record daily precipitation	90.0 mm (3.5 in)	56 of 100 (Notable)
Sankarankoil	India	Record daily precipitation	53.0 mm (2.1 in)	56 of 100 (Notable)
Ottawa Cda	Canada	Record daily precipitation	51.1 mm (2.0 in)	55 of 100 (Notable)
Columbia	United States	Record daily precipitation	124.5 mm (4.9 in)	55 of 100 (Notable)
Robertsdale	United States	Record daily precipitation	84.3 mm (3.3 in)	54 of 100 (Notable)
Ootacamund Obsy Sr	India	Record daily precipitation	77.8 mm (3.1 in)	53 of 100 (Notable)
Pollachi	India	Record daily precipitation	64.0 mm (2.5 in)	52 of 100 (Notable)
Kapuskasing A	Canada	Record daily precipitation	57.9 mm (2.3 in)	51 of 100 (Notable)
Poplarville Exp STN	United States	Record daily precipitation	124.7 mm (4.9 in)	48 of 100 (Notable)
Alur	India	Record daily precipitation	63.5 mm (2.5 in)	47 of 100 (Notable)
Leakesville 6 WSW	United States	Record daily precipitation	87.6 mm (3.4 in)	47 of 100 (Notable)
Honaunau 27	United States	Record daily precipitation	52.1 mm (2.1 in)	47 of 100 (Notable)
Collins	United States	Record daily precipitation	108.7 mm (4.3 in)	45 of 100 (Notable)
Merrill	United States	Record daily precipitation	125.5 mm (4.9 in)	45 of 100 (Notable)
Waynesboro 2 W	United States	Record daily precipitation	79.8 mm (3.1 in)	45 of 100 (Notable)
Montreal/St-Hubert A	Canada	Record daily precipitation	47.2 mm (1.9 in)	44 of 100 (Notable)
Radhapuram	India	Record daily precipitation	31.0 mm (1.2 in)	44 of 100 (Notable)
La Huacana	Mexico	Record low minimum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Supai	United States	Record daily precipitation	35.6 mm (1.4 in)	44 of 100 (Notable)
Monticello	United States	Record daily precipitation	70.1 mm (2.8 in)	44 of 100 (Notable)
Alexandria 4 WSW	United States	Record daily precipitation	55.9 mm (2.2 in)	44 of 100 (Notable)
Hassan Obsy	India	Record daily precipitation	56.4 mm (2.2 in)	43 of 100 (Notable)
Omeo Valley	Australia	Record daily precipitation	31.5 mm (1.2 in)	42 of 100 (Notable)
Nawanshahr	India	Record daily precipitation	108.0 mm (4.3 in)	42 of 100 (Notable)
Jodhpur	India	Record daily precipitation	88.9 mm (3.5 in)	42 of 100 (Notable)
Kadayanallur	India	Record daily precipitation	35.0 mm (1.4 in)	42 of 100 (Notable)
Montreal McGill	Canada	Record daily precipitation	41.9 mm (1.6 in)	41 of 100 (Notable)
Perungalur	India	Record daily precipitation	95.0 mm (3.7 in)	41 of 100 (Notable)
Montebello Seigniory	Canada	Record daily precipitation	52.1 mm (2.1 in)	40 of 100 (Notable)
Port Hastings	Canada	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
Kodaikanal	India	Record daily precipitation	98.0 mm (3.9 in)	38 of 100 (Notable)
Ufa	Russia	Record low minimum temperature	1.5 C (34.7 F)	38 of 100 (Notable)
Bogalusa	United States	Record daily precipitation	104.1 mm (4.1 in)	37 of 100 (Notable)
Brackettville	United States	Record high maximum temperature	41.7 C (107.1 F)	37 of 100 (Notable)
Santa Rosalia (Dge)	Mexico	Record low minimum temperature	18.9 C (66.0 F)	36 of 100 (Notable)
Bijsk Zonalnaja	Russia	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
Bogucar	Russia	Record daily precipitation	25.2 mm (1.0 in)	35 of 100 (Notable)
Vanersborg	Sweden	Record high maximum temperature	27.0 C (80.6 F)	35 of 100 (Notable)
Patterson	United States	Record daily precipitation	40.6 mm (1.6 in)	35 of 100 (Notable)
Halflong Obsy	India	Record daily precipitation	58.4 mm (2.3 in)	34 of 100 (Routine)
Arkalgud	India	Record daily precipitation	40.8 mm (1.6 in)	34 of 100 (Routine)
Tenkasi	India	Record daily precipitation	69.0 mm (2.7 in)	34 of 100 (Routine)
Lafayette Rgnl AP	United States	Record high minimum temperature	25.6 C (78.1 F)	34 of 100 (Routine)
Tartu	Estonia	Record low minimum temperature	2.1 C (35.8 F)	33 of 100 (Routine)
Khowai	India	Record daily precipitation	166.0 mm (6.5 in)	33 of 100 (Routine)
Srivaikuntam	India	Record daily precipitation	72.0 mm (2.8 in)	32 of 100 (Routine)
Ayikudi	India	Record daily precipitation	61.0 mm (2.4 in)	32 of 100 (Routine)
Agartala	India	Record daily precipitation	121.9 mm (4.8 in)	32 of 100 (Routine)
Southampton	Canada	Record high minimum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Sampagaon-Bailh	India	Record daily precipitation	40.6 mm (1.6 in)	31 of 100 (Routine)
Lowville	United States	Record high minimum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Danevang 1 W	United States	Record high minimum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Kempten	Germany	Record daily precipitation	26.3 mm (1.0 in)	30 of 100 (Routine)
Brewton 3 SSE	United States	Record daily precipitation	65.5 mm (2.6 in)	30 of 100 (Routine)
Kellogg	United States	Record low minimum temperature	-1.1 C (30.0 F)	30 of 100 (Routine)
Okolona	United States	Record daily precipitation	49.8 mm (2.0 in)	30 of 100 (Routine)

Counts by Type and Timescale

530 records

Records set or tied on 18 August 1969 by type: Highest daily maximum 98, Lowest daily maximum 58, Highest daily minimum 133, Lowest daily minimum 65, Heaviest daily rainfall 176.

Records on 18 August 1969 by type
Record type	Records
Highest daily maximum	98
Lowest daily maximum	58
Highest daily minimum	133
Lowest daily minimum	65
Heaviest daily rainfall	176
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1969 by timescale: all-time 1, monthly 18, daily 511.

How Much Records Were Beaten By

383 broken records

Margins by which the 383 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 84.8. Ties are not counted.

Top 20 by Significance

18 August 1969

Top 20 records on 18 August 1969 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1969	Bay Minette, US	monthly rain	136.9 mm (5.4 in)	61.7 mm (2.4 in)	21 years	61 of 100 (Major)
18 August 1969	Huntingdon, CA	daily rain	74.4 mm (2.9 in)	46.5 mm (1.8 in)	55 years	60 of 100 (Major)
18 August 1969	Perkins, CA	daily rain	63.5 mm (2.5 in)	47.8 mm (1.9 in)	48 years	59 of 100 (Notable)
18 August 1969	Kapuskasing Cda, CA	daily rain	58.4 mm (2.3 in)	38.8 mm (1.5 in)	46 years	58 of 100 (Notable)
18 August 1969	Mettupalayam, IN	daily rain	90.0 mm (3.5 in)	64.9 mm (2.6 in)	36 years	56 of 100 (Notable)
18 August 1969	Sankarankoil, IN	daily rain	53.0 mm (2.1 in)	46.4 mm (1.8 in)	36 years	56 of 100 (Notable)
18 August 1969	Ottawa Cda, CA	daily rain	51.1 mm (2.0 in)	24.4 mm (1.0 in)	75 years	55 of 100 (Notable)
18 August 1969	Columbia, US	monthly rain	124.5 mm (4.9 in)	35.6 mm (1.4 in)	43 years	55 of 100 (Notable)
18 August 1969	Robertsdale, US	daily rain	84.3 mm (3.3 in)	54.1 mm (2.1 in)	52 years	54 of 100 (Notable)
18 August 1969	Ootacamund Obsy Sr, IN	monthly rain	77.8 mm (3.1 in)	17.3 mm (0.7 in)	60 years	53 of 100 (Notable)
18 August 1969	Pollachi, IN	daily rain	64.0 mm (2.5 in)	43.2 mm (1.7 in)	23 years	52 of 100 (Notable)
18 August 1969	Kapuskasing A, CA	daily rain	57.9 mm (2.3 in)	47.5 mm (1.9 in)	28 years	51 of 100 (Notable)
18 August 1969	Poplarville Exp STN, US	daily rain	124.7 mm (4.9 in)	84.8 mm (3.3 in)	4 years	48 of 100 (Notable)
18 August 1969	Alur, IN	daily rain	63.5 mm (2.5 in)	40.1 mm (1.6 in)	8 years	47 of 100 (Notable)
18 August 1969	Leakesville 6 WSW, US	daily rain	87.6 mm (3.4 in)	32.0 mm (1.3 in)	71 years	47 of 100 (Notable)
18 August 1969	Honaunau 27, US	daily rain	52.1 mm (2.1 in)	31.8 mm (1.3 in)	16 years	47 of 100 (Notable)
18 August 1969	Collins, US	monthly rain	108.7 mm (4.3 in)	37.3 mm (1.5 in)	4 years	45 of 100 (Notable)
18 August 1969	Merrill, US	monthly rain	125.5 mm (4.9 in)	31.5 mm (1.2 in)	21 years	45 of 100 (Notable)
18 August 1969	Waynesboro 2 W, US	daily rain	79.8 mm (3.1 in)	21.9 mm (0.9 in)	76 years	45 of 100 (Notable)
18 August 1969	Montreal/St-Hubert A, CA	daily rain	47.2 mm (1.9 in)	32.0 mm (1.3 in)	36 years	44 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 1969

Records set or tied on this calendar date in each year from 1797 to 1969. 1969 had 530 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 1969-08-18: 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	341
20 to 40	27
40 to 60	10
60 to 80	4
80 to 100	1