Weather Records on 18 August 1973

734 weather records were set or tied worldwide on 18 August 1973. Highest significance: Edenton, US.

Key Facts for 18 August 1973

On 18 August 1973, 734 weather records were set or tied at long-record stations worldwide.
256 were record highs and 270 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 26 monthly and 708 daily.
Edenton set a daily record precipitation of 104.1 mm (4.1 in) on 18 August 1973.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 439 records.

Record Map

734 stations

734 station records on 18 August 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Edenton	United States	Record daily precipitation	104.1 mm (4.1 in)	59 of 100 (Notable)
Oxford 1 E	United States	Record daily precipitation	104.1 mm (4.1 in)	55 of 100 (Notable)
Troia	Brazil	Record daily precipitation	45.4 mm (1.8 in)	47 of 100 (Notable)
Gordon Downs	Australia	Record daily precipitation	25.7 mm (1.0 in)	45 of 100 (Notable)
Newell	United States	Record daily precipitation	88.9 mm (3.5 in)	44 of 100 (Notable)
Nikopol	Ukraine	Record daily precipitation	53.4 mm (2.1 in)	43 of 100 (Notable)
Bolivar	United States	Record daily precipitation	58.2 mm (2.3 in)	43 of 100 (Notable)
Rudnaja Pristan	Russia	Record daily precipitation	66.9 mm (2.6 in)	40 of 100 (Notable)
Canfield 1 S	United States	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Tionesta 2 SE Lake	United States	Record daily precipitation	91.9 mm (3.6 in)	39 of 100 (Notable)
Krasnyj Jar	Russia	Record daily precipitation	77.4 mm (3.0 in)	37 of 100 (Notable)
Fayette	United States	Record low maximum temperature	25.6 C (78.1 F)	36 of 100 (Notable)
Agassiz Cda	Canada	Record low minimum temperature	4.4 C (39.9 F)	35 of 100 (Notable)
Morris	Canada	Record daily precipitation	43.7 mm (1.7 in)	35 of 100 (Notable)
Jemez Springs	United States	Record low minimum temperature	5.6 C (42.1 F)	35 of 100 (Notable)
Tbilisi	Georgia	Record daily precipitation	38.6 mm (1.5 in)	34 of 100 (Routine)
Melnichnoe	Russia	Record daily precipitation	62.1 mm (2.4 in)	34 of 100 (Routine)
Beaver Falls 1 NE	United States	Record daily precipitation	41.4 mm (1.6 in)	34 of 100 (Routine)
Pialba Post Office	Australia	Record daily precipitation	27.4 mm (1.1 in)	33 of 100 (Routine)
Barkerville	Canada	Record low maximum temperature	5.6 C (42.1 F)	33 of 100 (Routine)
Natashquan A	Canada	Record high maximum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Soledad de Doblado	Mexico	Record low maximum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Bridger 2 N	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Libby 1 NE Rs	United States	Record low minimum temperature	-1.1 C (30.0 F)	33 of 100 (Routine)
Red Lodge	United States	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Blaine	United States	Record low minimum temperature	3.3 C (37.9 F)	33 of 100 (Routine)
Newport	United States	Record low minimum temperature	3.3 C (37.9 F)	33 of 100 (Routine)
Goondiwindi Post Office	Australia	Record low maximum temperature	13.6 C (56.5 F)	32 of 100 (Routine)
Galeton	United States	Record daily precipitation	96.5 mm (3.8 in)	32 of 100 (Routine)
Odessa	United States	Record low minimum temperature	2.2 C (36.0 F)	32 of 100 (Routine)
La Palma	Australia	Record daily precipitation	30.0 mm (1.2 in)	31 of 100 (Routine)
Victoria Gonzales Hts	Canada	Record low minimum temperature	7.2 C (45.0 F)	31 of 100 (Routine)
Brockville	Canada	Record daily precipitation	36.6 mm (1.4 in)	31 of 100 (Routine)
Dawson	United States	Record daily precipitation	36.8 mm (1.4 in)	31 of 100 (Routine)
Catawba	United States	Record daily precipitation	85.6 mm (3.4 in)	31 of 100 (Routine)
El Salto (Smn)	Mexico	Record high maximum temperature	30.0 C (86.0 F)	30 of 100 (Routine)
Kjahta	Russia	Record low minimum temperature	1.3 C (34.3 F)	30 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record low maximum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
W Blocton	United States	Record daily precipitation	44.5 mm (1.8 in)	30 of 100 (Routine)
Bottineau	United States	Record high minimum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Big Creek	Canada	Record low maximum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Vernon Coldstream Ranch	Canada	Record low minimum temperature	3.3 C (37.9 F)	29 of 100 (Routine)
Hamiota	Canada	Record high minimum temperature	18.9 C (66.0 F)	29 of 100 (Routine)
The Pas A	Canada	Record daily precipitation	33.0 mm (1.3 in)	29 of 100 (Routine)
Bereznjaki	Russia	Record daily precipitation	44.4 mm (1.7 in)	29 of 100 (Routine)
Bastanka	Ukraine	Record daily precipitation	33.1 mm (1.3 in)	29 of 100 (Routine)
Bailey	United States	Record high minimum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
Glacier Rs	United States	Record low minimum temperature	1.1 C (34.0 F)	29 of 100 (Routine)
Longmire Rainier Nps	United States	Record low minimum temperature	1.7 C (35.1 F)	29 of 100 (Routine)
Sugar Camp	United States	Record daily precipitation	42.9 mm (1.7 in)	29 of 100 (Routine)
Burlington Intl AP	United States	Record daily precipitation	40.4 mm (1.6 in)	29 of 100 (Routine)
Ketchikan AP	United States	Record low minimum temperature	4.4 C (39.9 F)	29 of 100 (Routine)
Junqueiro	Brazil	Record daily precipitation	26.2 mm (1.0 in)	28 of 100 (Routine)
Russell	Canada	Record daily precipitation	41.1 mm (1.6 in)	28 of 100 (Routine)
Victor	United States	Record high minimum temperature	12.8 C (55.0 F)	28 of 100 (Routine)
Forestburg 4 NNE	United States	Record high minimum temperature	24.4 C (75.9 F)	28 of 100 (Routine)
Appomattox	United States	Record daily precipitation	163.8 mm (6.4 in)	28 of 100 (Routine)
Diablo Dam	United States	Record low minimum temperature	5.0 C (41.0 F)	28 of 100 (Routine)
Victoria Int'l A	Canada	Record low minimum temperature	4.4 C (39.9 F)	27 of 100 (Routine)
Bilovodsk	Ukraine	Record daily precipitation	32.2 mm (1.3 in)	27 of 100 (Routine)

Counts by Type and Timescale

734 records

Records set or tied on 18 August 1973 by type: Highest daily maximum 92, Lowest daily maximum 87, Highest daily minimum 164, Lowest daily minimum 183, Heaviest daily rainfall 207, Heaviest daily snowfall 1.

Records on 18 August 1973 by type
Record type	Records
Highest daily maximum	92
Lowest daily maximum	87
Highest daily minimum	164
Lowest daily minimum	183
Heaviest daily rainfall	207
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 18 August 1973 by timescale: all-time 0, monthly 26, daily 708.

How Much Records Were Beaten By

578 broken records

Margins by which the 578 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 72.1. Ties are not counted.

Top 20 by Significance

18 August 1973

Top 20 records on 18 August 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1973	Edenton, US	daily rain	104.1 mm (4.1 in)	50.8 mm (2.0 in)	73 years	59 of 100 (Notable)
18 August 1973	Oxford 1 E, US	daily rain	104.1 mm (4.1 in)	72.1 mm (2.8 in)	34 years	55 of 100 (Notable)
18 August 1973	Troia, BR	monthly rain	45.4 mm (1.8 in)	29.7 mm (1.2 in)	18 years	47 of 100 (Notable)
18 August 1973	Gordon Downs, AU	daily rain	25.7 mm (1.0 in)	25.7 mm (1.0 in)	52 years	45 of 100 (Notable)
18 August 1973	Newell, US	monthly rain	88.9 mm (3.5 in)	17.8 mm (0.7 in)	36 years	44 of 100 (Notable)
18 August 1973	Nikopol, UA	daily rain	53.4 mm (2.1 in)	41.8 mm (1.6 in)	0 years	43 of 100 (Notable)
18 August 1973	Bolivar, US	daily rain	58.2 mm (2.3 in)	33.3 mm (1.3 in)	24 years	43 of 100 (Notable)
18 August 1973	Rudnaja Pristan, RU	daily rain	66.9 mm (2.6 in)	53.5 mm (2.1 in)	35 years	40 of 100 (Notable)
18 August 1973	Canfield 1 S, US	daily rain	38.6 mm (1.5 in)	21.6 mm (0.9 in)	42 years	40 of 100 (Notable)
18 August 1973	Tionesta 2 SE Lake, US	monthly rain	91.9 mm (3.6 in)	24.1 mm (0.9 in)	8 years	39 of 100 (Notable)
18 August 1973	Krasnyj Jar, RU	daily rain	77.4 mm (3.0 in)	43.1 mm (1.7 in)	19 years	37 of 100 (Notable)
18 August 1973	Fayette, US	daily low max	25.6 C (78.1 F)	1.1 C (2.0 F)	80 years	36 of 100 (Notable)
18 August 1973	Agassiz Cda, CA	daily low min	4.4 C (39.9 F)	1.2 C (2.2 F)	77 years	35 of 100 (Notable)
18 August 1973	Morris, CA	daily rain	43.7 mm (1.7 in)	29.0 mm (1.1 in)	4 years	35 of 100 (Notable)
18 August 1973	Jemez Springs, US	daily low min	5.6 C (42.1 F)	2.7 C (4.9 F)	52 years	35 of 100 (Notable)
18 August 1973	Tbilisi, GE	daily rain	38.6 mm (1.5 in)	19.4 mm (0.8 in)	14 years	34 of 100 (Routine)
18 August 1973	Melnichnoe, RU	daily rain	62.1 mm (2.4 in)	29.2 mm (1.1 in)	28 years	34 of 100 (Routine)
18 August 1973	Beaver Falls 1 NE, US	daily rain	41.4 mm (1.6 in)	21.6 mm (0.9 in)	27 years	34 of 100 (Routine)
18 August 1973	Pialba Post Office, AU	daily rain	27.4 mm (1.1 in)	7.6 mm (0.30 in)	64 years	33 of 100 (Routine)
18 August 1973	Barkerville, CA	daily low max	5.6 C (42.1 F)	3.8 C (6.8 F)	60 years	33 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 1973

Records set or tied on this calendar date in each year from 1797 to 1973. 1973 had 734 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 1973-08-18: 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 10	520
10 to 20	36
20 to 30	14
30 to 40	3
40 to 50	2
50 to 60	2
60 to 70	0
70 to 80	1