Weather Records on 18 August 1968

795 weather records were set or tied worldwide on 18 August 1968. Highest significance: Gavle, SE.

Key Facts for 18 August 1968

On 18 August 1968, 795 weather records were set or tied at long-record stations worldwide.
114 were record highs and 431 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 37 monthly and 758 daily.
Gavle set a daily record precipitation of 58.8 mm (2.3 in) on 18 August 1968.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 439 records.

Record Map

795 stations

795 station records on 18 August 1968 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1968: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gavle	Sweden	Record daily precipitation	58.8 mm (2.3 in)	56 of 100 (Notable)
Deaver	United States	Record daily precipitation	26.4 mm (1.0 in)	54 of 100 (Notable)
Guerrero (Smn)	Mexico	Record daily precipitation	51.8 mm (2.0 in)	53 of 100 (Notable)
Caron	Canada	Record daily precipitation	55.9 mm (2.2 in)	51 of 100 (Notable)
Crosby	United States	Record daily precipitation	40.6 mm (1.6 in)	48 of 100 (Notable)
Beulah	United States	Record low maximum temperature	18.9 C (66.0 F)	48 of 100 (Notable)
Tugaske	Canada	Record daily precipitation	43.7 mm (1.7 in)	47 of 100 (Notable)
Miles City	United States	Record daily precipitation	39.9 mm (1.6 in)	47 of 100 (Notable)
Ardmore 1 NW	United States	Record daily precipitation	38.1 mm (1.5 in)	47 of 100 (Notable)
Martuni	Armenia	Record daily precipitation	25.4 mm (1.0 in)	46 of 100 (Notable)
Poplar 2 E	United States	Record daily precipitation	49.8 mm (2.0 in)	46 of 100 (Notable)
Elbow	Canada	Record daily precipitation	30.5 mm (1.2 in)	44 of 100 (Notable)
Nikolsk	Russia	Record daily precipitation	41.2 mm (1.6 in)	43 of 100 (Notable)
Naselle 2 ENE	United States	Record daily precipitation	31.8 mm (1.3 in)	43 of 100 (Notable)
Carlyle	Canada	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Dillon U of Montana Western	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Brigham City	United States	Record low maximum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Rock Springs	United States	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Richfield	United States	Record low maximum temperature	11.7 C (53.1 F)	40 of 100 (Notable)
Riggins	United States	Record low maximum temperature	16.7 C (62.1 F)	40 of 100 (Notable)
Farson 2NNE	United States	Record low maximum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Midale	Canada	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Fredonia	United States	Record daily precipitation	75.4 mm (3.0 in)	39 of 100 (Notable)
Myrup	Australia	Record daily precipitation	56.4 mm (2.2 in)	38 of 100 (Notable)
Zolotoj	Russia	Record daily precipitation	78.6 mm (3.1 in)	38 of 100 (Notable)
American Falls 6 NE	United States	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Deadwood Dam	United States	Record low maximum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Swan Falls Ph	United States	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Weiser	United States	Record low maximum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Lamoille Ph	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Logan Utah St UNIV	United States	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
McGill	United States	Record low maximum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Montello 2NE	United States	Record low maximum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Kendall	United States	Record low maximum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Beechy	Canada	Record daily precipitation	25.4 mm (1.0 in)	36 of 100 (Notable)
Van	Turkey	Record low maximum temperature	18.4 C (65.1 F)	36 of 100 (Notable)
Mtn Home	United States	Record low maximum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Shoshone 1 WNW	United States	Record low maximum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Grenora	United States	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Levan	United States	Record low minimum temperature	3.3 C (37.9 F)	36 of 100 (Notable)
Lewiston	United States	Record low maximum temperature	17.2 C (63.0 F)	36 of 100 (Notable)
Grand Junction Walker Fld	United States	Record low minimum temperature	8.3 C (46.9 F)	36 of 100 (Notable)
Reasi	India	Record daily precipitation	150.0 mm (5.9 in)	35 of 100 (Notable)
Dubois Exp STN	United States	Record low maximum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Jerome	United States	Record low maximum temperature	12.2 C (54.0 F)	35 of 100 (Notable)
Malad	United States	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Lima	United States	Record low maximum temperature	13.3 C (55.9 F)	35 of 100 (Notable)
Warm Springs Rsvr	United States	Record low maximum temperature	16.1 C (61.0 F)	35 of 100 (Notable)
Yanykh	Armenia	Record daily precipitation	27.5 mm (1.1 in)	34 of 100 (Routine)
Viking	Canada	Record daily precipitation	29.7 mm (1.2 in)	34 of 100 (Routine)
Col du Grand St-Bernard	Switzerland	Record low maximum temperature	1.6 C (34.9 F)	34 of 100 (Routine)
Stornoway Airport	United Kingdom	Record low minimum temperature	3.7 C (38.7 F)	34 of 100 (Routine)
Susanville 2SW	United States	Record low maximum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
Rangely 1E	United States	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Island Park	United States	Record low maximum temperature	10.0 C (50.0 F)	34 of 100 (Routine)
Ogden Pioneer Ph	United States	Record low minimum temperature	5.6 C (42.1 F)	34 of 100 (Routine)
Price Game Farm	United States	Record low maximum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Riverdale	United States	Record low maximum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
Francis	Canada	Record daily precipitation	30.2 mm (1.2 in)	33 of 100 (Routine)
Steamboat Springs	United States	Record low maximum temperature	19.4 C (66.9 F)	33 of 100 (Routine)

Counts by Type and Timescale

795 records

Records set or tied on 18 August 1968 by type: Highest daily maximum 51, Lowest daily maximum 327, Highest daily minimum 63, Lowest daily minimum 104, Heaviest daily rainfall 249, Heaviest daily snowfall 1.

Records on 18 August 1968 by type
Record type	Records
Highest daily maximum	51
Lowest daily maximum	327
Highest daily minimum	63
Lowest daily minimum	104
Heaviest daily rainfall	249
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 18 August 1968 by timescale: all-time 0, monthly 37, daily 758.

How Much Records Were Beaten By

627 broken records

Margins by which the 627 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 53.5. Ties are not counted.

Top 20 by Significance

18 August 1968

Top 20 records on 18 August 1968 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1968	Gavle, SE	daily rain	58.8 mm (2.3 in)	17.7 mm (0.7 in)	73 years	56 of 100 (Notable)
18 August 1968	Deaver, US	daily rain	26.4 mm (1.0 in)	24.4 mm (1.0 in)	30 years	54 of 100 (Notable)
18 August 1968	Guerrero (Smn), MX	daily rain	51.8 mm (2.0 in)	34.0 mm (1.3 in)	31 years	53 of 100 (Notable)
18 August 1968	Caron, CA	monthly rain	55.9 mm (2.2 in)	15.3 mm (0.6 in)	47 years	51 of 100 (Notable)
18 August 1968	Crosby, US	daily rain	40.6 mm (1.6 in)	27.6 mm (1.1 in)	37 years	48 of 100 (Notable)
18 August 1968	Beulah, US	daily low max	18.9 C (66.0 F)	8.9 C (16.0 F)	69 years	48 of 100 (Notable)
18 August 1968	Tugaske, CA	daily rain	43.7 mm (1.7 in)	23.9 mm (0.9 in)	33 years	47 of 100 (Notable)
18 August 1968	Miles City, US	daily rain	39.9 mm (1.6 in)	19.3 mm (0.8 in)	42 years	47 of 100 (Notable)
18 August 1968	Ardmore 1 NW, US	daily rain	38.1 mm (1.5 in)	23.6 mm (0.9 in)	53 years	47 of 100 (Notable)
18 August 1968	Martuni, AM	daily rain	25.4 mm (1.0 in)	19.6 mm (0.8 in)	20 years	46 of 100 (Notable)
18 August 1968	Poplar 2 E, US	daily rain	49.8 mm (2.0 in)	22.4 mm (0.9 in)	50 years	46 of 100 (Notable)
18 August 1968	Elbow, CA	daily rain	30.5 mm (1.2 in)	19.3 mm (0.8 in)	11 years	44 of 100 (Notable)
18 August 1968	Nikolsk, RU	daily rain	41.2 mm (1.6 in)	24.7 mm (1.0 in)	10 years	43 of 100 (Notable)
18 August 1968	Naselle 2 ENE, US	daily rain	31.8 mm (1.3 in)	24.7 mm (1.0 in)	39 years	43 of 100 (Notable)
18 August 1968	Carlyle, CA	daily rain	36.8 mm (1.4 in)	26.6 mm (1.0 in)	33 years	41 of 100 (Notable)
18 August 1968	Dillon U of Montana Western, US	daily low max	15.0 C (59.0 F)	5.0 C (9.0 F)	71 years	41 of 100 (Notable)
18 August 1968	Brigham City, US	daily low max	18.9 C (66.0 F)	6.7 C (12.1 F)	52 years	41 of 100 (Notable)
18 August 1968	Rock Springs, US	daily low max	16.7 C (62.1 F)	8.3 C (14.9 F)	27 years	41 of 100 (Notable)
18 August 1968	Richfield, US	monthly low max	11.7 C (53.1 F)	3.9 C (7.0 F)	52 years	40 of 100 (Notable)
18 August 1968	Riggins, US	daily low max	16.7 C (62.1 F)	7.2 C (13.0 F)	66 years	40 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 1968

Records set or tied on this calendar date in each year from 1797 to 1968. 1968 had 795 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 1968-08-18: 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).

Histogram of margins by which records were beaten on 18 August 1968
Margin	Records
0 to 10	541
10 to 20	61
20 to 30	20
30 to 40	1
40 to 50	3
50 to 60	1