Weather Records on 18 August 1943

738 weather records were set or tied worldwide on 18 August 1943. Highest significance: Frome Downs, AU.

Key Facts for 18 August 1943

On 18 August 1943, 738 weather records were set or tied at long-record stations worldwide.
87 were record highs and 496 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 733 daily.
Frome Downs set a daily record precipitation of 28.2 mm (1.1 in) on 18 August 1943.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 439 records.

Record Map

738 stations

738 station records on 18 August 1943 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1943: highest significance records shown on the map
Station	Country	Type	Value	Significance
Frome Downs	Australia	Record daily precipitation	28.2 mm (1.1 in)	53 of 100 (Notable)
Taos	United States	Record daily precipitation	31.2 mm (1.2 in)	50 of 100 (Notable)
Tres Piedras	United States	Record daily precipitation	40.6 mm (1.6 in)	44 of 100 (Notable)
Milan	Italy	Record high minimum temperature	25.4 C (77.7 F)	40 of 100 (Notable)
Winfield 3NE	United States	Record low minimum temperature	8.3 C (46.9 F)	39 of 100 (Notable)
Elizabethtown	United States	Record daily precipitation	40.1 mm (1.6 in)	39 of 100 (Notable)
Chama	United States	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Guthrie 5S	United States	Record low minimum temperature	11.7 C (53.1 F)	35 of 100 (Notable)
Stillwater 2 W	United States	Record low minimum temperature	10.0 C (50.0 F)	34 of 100 (Routine)
Pachamba	India	Record daily precipitation	77.2 mm (3.0 in)	33 of 100 (Routine)
Eraniel	India	Record daily precipitation	34.3 mm (1.4 in)	33 of 100 (Routine)
Norddal	Norway	Record snow depth	15.0 cm (5.9 in)	33 of 100 (Routine)
El Dorado	United States	Record low minimum temperature	7.8 C (46.0 F)	33 of 100 (Routine)
Norwich	United States	Record low minimum temperature	10.0 C (50.0 F)	33 of 100 (Routine)
Koshkonong	United States	Record low minimum temperature	8.9 C (48.0 F)	33 of 100 (Routine)
Red Rvr	United States	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
Pawhuska	United States	Record low minimum temperature	9.4 C (48.9 F)	33 of 100 (Routine)
Conway	United States	Record daily precipitation	85.1 mm (3.4 in)	33 of 100 (Routine)
Jalaun	India	Record daily precipitation	98.3 mm (3.9 in)	32 of 100 (Routine)
Eureka Springs 3 WNW	United States	Record low minimum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Emporia 1 S	United States	Record low minimum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
Chickasha	United States	Record low minimum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Shawnee	United States	Record low minimum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Horton	United States	Record low minimum temperature	7.2 C (45.0 F)	31 of 100 (Routine)
Apache	United States	Record low minimum temperature	10.6 C (51.1 F)	31 of 100 (Routine)
Ft Reno	United States	Record low minimum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Wilmington	Australia	Record daily precipitation	28.7 mm (1.1 in)	30 of 100 (Routine)
Rath	India	Record daily precipitation	82.6 mm (3.3 in)	30 of 100 (Routine)
Appleton City	United States	Record low minimum temperature	10.0 C (50.0 F)	30 of 100 (Routine)
Neosho	United States	Record low minimum temperature	8.3 C (46.9 F)	30 of 100 (Routine)
Gainesville	United States	Record low minimum temperature	16.7 C (62.1 F)	30 of 100 (Routine)
Polavaram	India	Record daily precipitation	108.7 mm (4.3 in)	29 of 100 (Routine)
Shoshone	United States	Record daily precipitation	25.7 mm (1.0 in)	29 of 100 (Routine)
Woodville 4 ESE	United States	Record low minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Hot Springs 2	United States	Record low minimum temperature	11.1 C (52.0 F)	29 of 100 (Routine)
Karkaralinsk	Kazakhstan	Record daily precipitation	52.0 mm (2.0 in)	28 of 100 (Routine)
Mt Ida 3 SE	United States	Record low minimum temperature	11.7 C (53.1 F)	28 of 100 (Routine)
Fernandina Beach	United States	Record daily precipitation	47.0 mm (1.9 in)	28 of 100 (Routine)
Clarinda	United States	Record low minimum temperature	6.7 C (44.1 F)	28 of 100 (Routine)
Columbus	United States	Record low minimum temperature	10.6 C (51.1 F)	28 of 100 (Routine)
Southport 5 N	United States	Record daily precipitation	64.0 mm (2.5 in)	28 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	33.6 C (92.5 F)	27 of 100 (Routine)
Burlington	United States	Record low minimum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Lawrence	United States	Record low minimum temperature	10.6 C (51.1 F)	27 of 100 (Routine)
Osage City	United States	Record low minimum temperature	8.3 C (46.9 F)	27 of 100 (Routine)
Beatrice	United States	Record low minimum temperature	8.9 C (48.0 F)	27 of 100 (Routine)
Tecumseh 1S	United States	Record low minimum temperature	6.7 C (44.1 F)	27 of 100 (Routine)
Cowles	United States	Record high minimum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Kingfisher	United States	Record low minimum temperature	10.0 C (50.0 F)	27 of 100 (Routine)
Lawton	United States	Record low minimum temperature	13.3 C (55.9 F)	27 of 100 (Routine)
Tishomingo Natl Wr	United States	Record low minimum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Conway	United States	Record low maximum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Wilpena Head Station	Australia	Record daily precipitation	25.9 mm (1.0 in)	26 of 100 (Routine)
Rohtak	India	Record daily precipitation	40.1 mm (1.6 in)	26 of 100 (Routine)
Fayetteville Exp STN	United States	Record low minimum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Pine Bluff	United States	Record low minimum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Chapman	United States	Record low minimum temperature	6.7 C (44.1 F)	26 of 100 (Routine)
Sedan	United States	Record low minimum temperature	8.9 C (48.0 F)	26 of 100 (Routine)
Mexico	United States	Record low minimum temperature	10.0 C (50.0 F)	26 of 100 (Routine)
Sikeston	United States	Record low minimum temperature	12.2 C (54.0 F)	26 of 100 (Routine)

Counts by Type and Timescale

738 records

Records set or tied on 18 August 1943 by type: Highest daily maximum 41, Lowest daily maximum 48, Highest daily minimum 46, Lowest daily minimum 448, Heaviest daily rainfall 154, Deepest snow cover 1.

Records on 18 August 1943 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	48
Highest daily minimum	46
Lowest daily minimum	448
Heaviest daily rainfall	154
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 18 August 1943 by timescale: all-time 0, monthly 5, daily 733.

How Much Records Were Beaten By

607 broken records

Margins by which the 607 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 150.0. Ties are not counted.

Top 20 by Significance

18 August 1943

Top 20 records on 18 August 1943 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1943	Frome Downs, AU	daily rain	28.2 mm (1.1 in)	26.2 mm (1.0 in)	32 years	53 of 100 (Notable)
18 August 1943	Taos, US	daily rain	31.2 mm (1.2 in)	17.2 mm (0.7 in)	40 years	50 of 100 (Notable)
18 August 1943	Tres Piedras, US	daily rain	40.6 mm (1.6 in)	24.1 mm (0.9 in)	32 years	44 of 100 (Notable)
18 August 1943	Milan, IT	daily high min	25.4 C (77.7 F)	0.1 C (0.2 F)	145 years	40 of 100 (Notable)
18 August 1943	Winfield 3NE, US	daily low min	8.3 C (46.9 F)	7.3 C (13.1 F)	40 years	39 of 100 (Notable)
18 August 1943	Elizabethtown, US	daily rain	40.1 mm (1.6 in)	23.6 mm (0.9 in)	5 years	39 of 100 (Notable)
18 August 1943	Chama, US	daily rain	30.5 mm (1.2 in)	16.5 mm (0.6 in)	20 years	35 of 100 (Notable)
18 August 1943	Guthrie 5S, US	daily low min	11.7 C (53.1 F)	5.5 C (9.9 F)	49 years	35 of 100 (Notable)
18 August 1943	Stillwater 2 W, US	daily low min	10.0 C (50.0 F)	5.6 C (10.1 F)	45 years	34 of 100 (Routine)
18 August 1943	Pachamba, IN	daily rain	77.2 mm (3.0 in)	43.4 mm (1.7 in)	24 years	33 of 100 (Routine)
18 August 1943	Eraniel, IN	daily rain	34.3 mm (1.4 in)	19.8 mm (0.8 in)	40 years	33 of 100 (Routine)
18 August 1943	Norddal, NO	daily snow depth	15.0 cm (5.9 in)	15.0 cm (5.9 in)	47 years	33 of 100 (Routine)
18 August 1943	El Dorado, US	daily low min	7.8 C (46.0 F)	5.5 C (9.9 F)	46 years	33 of 100 (Routine)
18 August 1943	Norwich, US	daily low min	10.0 C (50.0 F)	5.0 C (9.0 F)	45 years	33 of 100 (Routine)
18 August 1943	Koshkonong, US	daily low min	8.9 C (48.0 F)	7.2 C (13.0 F)	16 years	33 of 100 (Routine)
18 August 1943	Red Rvr, US	monthly rain	40.6 mm (1.6 in)	8.8 mm (0.35 in)	7 years	33 of 100 (Routine)
18 August 1943	Pawhuska, US	daily low min	9.4 C (48.9 F)	6.2 C (11.2 F)	41 years	33 of 100 (Routine)
18 August 1943	Conway, US	daily rain	85.1 mm (3.4 in)	32.8 mm (1.3 in)	32 years	33 of 100 (Routine)
18 August 1943	Jalaun, IN	daily rain	98.3 mm (3.9 in)	54.4 mm (2.1 in)	1 year	32 of 100 (Routine)
18 August 1943	Eureka Springs 3 WNW, US	daily low min	10.6 C (51.1 F)	5.5 C (9.9 F)	40 years	32 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 1943

Records set or tied on this calendar date in each year from 1797 to 1943. 1943 had 738 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 1943-08-18: 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 20	589
20 to 40	15
40 to 60	2
60 to 80	0
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1