Weather Records on 18 July 1943

277 weather records were set or tied worldwide on 18 July 1943. Highest significance: St Marys, US.

Key Facts for 18 July 1943

On 18 July 1943, 277 weather records were set or tied at long-record stations worldwide.
130 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 5 monthly and 271 daily.
St Marys set a daily record precipitation of 50.3 mm (2.0 in) on 18 July 1943.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

277 stations

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

Weather records on 18 July 1943: highest significance records shown on the map
Station	Country	Type	Value	Significance
St Marys	United States	Record daily precipitation	50.3 mm (2.0 in)	39 of 100 (Notable)
Humansdorp (Pol)	South Africa	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
Sonari	India	Record daily precipitation	125.7 mm (4.9 in)	36 of 100 (Notable)
Milledgeville	United States	Record high minimum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Claysville 3 W	United States	Record daily precipitation	38.9 mm (1.5 in)	35 of 100 (Notable)
Cape Otway Lighthouse	Australia	Record low maximum temperature	8.3 C (46.9 F)	33 of 100 (Routine)
Una	India	Record daily precipitation	130.8 mm (5.1 in)	33 of 100 (Routine)
Lamar 7N	United States	Record daily precipitation	52.1 mm (2.1 in)	33 of 100 (Routine)
Kohala Mis 175.1	United States	Record daily precipitation	40.1 mm (1.6 in)	31 of 100 (Routine)
Bayana Biana	India	Record daily precipitation	79.5 mm (3.1 in)	29 of 100 (Routine)
Milan 1NW	United States	Record daily precipitation	31.2 mm (1.2 in)	28 of 100 (Routine)
Montello 2NE	United States	Record low maximum temperature	24.4 C (75.9 F)	28 of 100 (Routine)
New Castle 1 N	United States	Record daily precipitation	48.3 mm (1.9 in)	28 of 100 (Routine)
Ratangarh	India	Record daily precipitation	75.2 mm (3.0 in)	27 of 100 (Routine)
Coldwater	United States	Record high minimum temperature	25.6 C (78.1 F)	27 of 100 (Routine)
Lalsot	India	Record daily precipitation	63.0 mm (2.5 in)	26 of 100 (Routine)
Sawai Madhopur	India	Record daily precipitation	133.1 mm (5.2 in)	26 of 100 (Routine)
Coraopolis Neville Is	United States	Record daily precipitation	29.2 mm (1.1 in)	26 of 100 (Routine)
Nurnberg	Germany	Record low minimum temperature	7.2 C (45.0 F)	25 of 100 (Routine)
Tracy	United States	Record daily precipitation	99.6 mm (3.9 in)	25 of 100 (Routine)
Aberdeen	United States	Record high minimum temperature	27.2 C (81.0 F)	25 of 100 (Routine)
Confluence 1 NW	United States	Record daily precipitation	35.8 mm (1.4 in)	25 of 100 (Routine)
Stewart	Canada	Record daily precipitation	38.1 mm (1.5 in)	24 of 100 (Routine)
Anticosti SW Point	Canada	Record low maximum temperature	12.8 C (55.0 F)	24 of 100 (Routine)
Booneville	United States	Record high minimum temperature	26.1 C (79.0 F)	24 of 100 (Routine)
Britt 3E	United States	Record daily precipitation	36.1 mm (1.4 in)	23 of 100 (Routine)
Berinag	India	Record daily precipitation	88.9 mm (3.5 in)	22 of 100 (Routine)
Tallapoosa 2 N	United States	Record high minimum temperature	23.9 C (75.0 F)	22 of 100 (Routine)
Nikolaevsk-Na-Amure	Russia	Record high minimum temperature	19.4 C (66.9 F)	21 of 100 (Routine)
Flahult	Sweden	Record daily precipitation	28.8 mm (1.1 in)	21 of 100 (Routine)
Irvington	United States	Record high minimum temperature	25.6 C (78.1 F)	21 of 100 (Routine)
Willmar Wwtp	United States	Record daily precipitation	28.4 mm (1.1 in)	21 of 100 (Routine)
Glens Falls Fire STN	United States	Record high minimum temperature	21.7 C (71.1 F)	21 of 100 (Routine)
Tarboro 1 S	United States	Record high minimum temperature	25.6 C (78.1 F)	21 of 100 (Routine)
Tullahoma	United States	Record high minimum temperature	22.8 C (73.0 F)	21 of 100 (Routine)
Cairo 3 S	United States	Record daily precipitation	63.5 mm (2.5 in)	21 of 100 (Routine)
Watertown Rgnl AP	United States	Record daily precipitation	25.7 mm (1.0 in)	21 of 100 (Routine)
Henbury	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Alice Springs Post Office	Australia	Record daily precipitation	13.0 mm (0.5 in)	20 of 100 (Routine)
Kimberley Downs	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Hermannsburg	Australia	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)
Tempe Downs	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
De Grey	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Yarrie	Australia	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Mount Browne	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Yeeda	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Bredasdorp	South Africa	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Derby Post Office	Australia	Record daily precipitation	2.0 mm (0.08 in)	20 of 100 (Routine)
Liveringa Upper	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Noonkanbah	Australia	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Novosibirsk	Russia	Record daily precipitation	21.0 mm (0.8 in)	20 of 100 (Routine)
Newell	United States	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Nimingarra	Australia	Record daily precipitation	7.9 mm (0.31 in)	20 of 100 (Routine)
Pardoo Station	Australia	Record daily precipitation	6.9 mm (0.27 in)	20 of 100 (Routine)
Tandwa	India	Record daily precipitation	66.3 mm (2.6 in)	20 of 100 (Routine)
Manoharpur	India	Record daily precipitation	93.5 mm (3.7 in)	20 of 100 (Routine)
Jagnathpur	India	Record daily precipitation	137.2 mm (5.4 in)	20 of 100 (Routine)
Kandalaksa	Russia	Record high minimum temperature	19.4 C (66.9 F)	20 of 100 (Routine)
Griffin	United States	Record high minimum temperature	25.0 C (77.0 F)	20 of 100 (Routine)
Frankfort Downtown	United States	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)

Counts by Type and Timescale

277 records

Records set or tied on 18 July 1943 by type: Highest daily maximum 33, Lowest daily maximum 16, Highest daily minimum 97, Lowest daily minimum 18, Heaviest daily rainfall 113.

Records on 18 July 1943 by type
Record type	Records
Highest daily maximum	33
Lowest daily maximum	16
Highest daily minimum	97
Lowest daily minimum	18
Heaviest daily rainfall	113
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1943 by timescale: all-time 1, monthly 5, daily 271.

How Much Records Were Beaten By

190 broken records

Margins by which the 190 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 69.8. Ties are not counted.

Top 20 by Significance

18 July 1943

Top 20 records on 18 July 1943 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1943	St Marys, US	daily rain	50.3 mm (2.0 in)	36.8 mm (1.4 in)	20 years	39 of 100 (Notable)
18 July 1943	Humansdorp (Pol), ZA	daily rain	31.8 mm (1.3 in)	13.8 mm (0.5 in)	56 years	38 of 100 (Notable)
18 July 1943	Sonari, IN	daily rain	125.7 mm (4.9 in)	41.9 mm (1.6 in)	40 years	36 of 100 (Notable)
18 July 1943	Milledgeville, US	daily high min	26.7 C (80.1 F)	3.4 C (6.1 F)	40 years	35 of 100 (Notable)
18 July 1943	Claysville 3 W, US	daily rain	38.9 mm (1.5 in)	23.4 mm (0.9 in)	34 years	35 of 100 (Notable)
18 July 1943	Cape Otway Lighthouse, AU	daily low max	8.3 C (46.9 F)	1.7 C (3.1 F)	58 years	33 of 100 (Routine)
18 July 1943	Una, IN	daily rain	130.8 mm (5.1 in)	69.8 mm (2.7 in)	16 years	33 of 100 (Routine)
18 July 1943	Lamar 7N, US	daily rain	52.1 mm (2.1 in)	35.6 mm (1.4 in)	34 years	33 of 100 (Routine)
18 July 1943	Kohala Mis 175.1, US	daily rain	40.1 mm (1.6 in)	12.7 mm (0.5 in)	36 years	31 of 100 (Routine)
18 July 1943	Bayana Biana, IN	daily rain	79.5 mm (3.1 in)	27.9 mm (1.1 in)	40 years	29 of 100 (Routine)
18 July 1943	Milan 1NW, US	daily rain	31.2 mm (1.2 in)	17.2 mm (0.7 in)	32 years	28 of 100 (Routine)
18 July 1943	Montello 2NE, US	daily low max	24.4 C (75.9 F)	4.5 C (8.1 F)	40 years	28 of 100 (Routine)
18 July 1943	New Castle 1 N, US	daily rain	48.3 mm (1.9 in)	19.1 mm (0.8 in)	25 years	28 of 100 (Routine)
18 July 1943	Ratangarh, IN	daily rain	75.2 mm (3.0 in)	38.1 mm (1.5 in)	12 years	27 of 100 (Routine)
18 July 1943	Coldwater, US	daily high min	25.6 C (78.1 F)	2.8 C (5.0 F)	40 years	27 of 100 (Routine)
18 July 1943	Lalsot, IN	daily rain	63.0 mm (2.5 in)	22.4 mm (0.9 in)	41 years	26 of 100 (Routine)
18 July 1943	Sawai Madhopur, IN	daily rain	133.1 mm (5.2 in)	46.7 mm (1.8 in)	28 years	26 of 100 (Routine)
18 July 1943	Coraopolis Neville Is, US	daily rain	29.2 mm (1.1 in)	14.0 mm (0.6 in)	34 years	26 of 100 (Routine)
18 July 1943	Nurnberg, DE	daily low min	7.2 C (45.0 F)	0.2 C (0.4 F)	63 years	25 of 100 (Routine)
18 July 1943	Tracy, US	all-time rain	99.6 mm (3.9 in)	1.8 mm (0.07 in)	3 years	25 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

1793 to 1943

Records set or tied on this calendar date in each year from 1793 to 1943. 1943 had 277 records.

Counts for years before the ledger starts come from the same station rules.

Records on 07-18 in each year
Year	Records
1793	2
1801	1
1845	1
1847	1
1851	1
1858	1
1862	1
1863	2
1865	1
1866	2
1871	2
1872	1
1874	1
1877	1
1878	4
1880	1
1881	2
1883	2
1886	2
1887	2
1888	1
1889	2
1890	4
1891	1
1892	2
1895	1
1896	2
1897	6
1898	2
1899	3
1900	8
1901	5
1902	3
1903	14
1904	7
1905	22
1906	13
1907	12
1908	39
1909	11
1910	33
1911	42
1912	28
1913	21
1914	47
1915	95
1916	235
1917	265
1918	58
1919	38
1920	59
1921	67
1922	138
1923	126
1924	306
1925	217
1926	191
1927	85
1928	108
1929	123
1930	462
1931	382
1932	343
1933	228
1934	502
1935	212
1936	665
1937	334
1938	306
1939	424
1940	352
1941	349
1942	661
1943	277
1944	333
1945	350
1946	334
1947	385
1948	289
1949	521
1950	632
1951	307
1952	597
1953	493
1954	501
1955	423
1956	466
1957	325
1958	475
1959	548
1960	669
1961	280
1962	516
1963	269
1964	523
1965	707
1966	545
1967	735
1968	998
1969	590
1970	530
1971	625
1972	701
1973	976
1974	729
1975	643
1976	1,047
1977	839
1978	881
1979	821
1980	747
1981	624
1982	749
1983	1,071
1984	1,000
1985	582
1986	908
1987	1,845
1988	1,001
1989	1,233
1990	1,053
1991	589
1992	1,135
1993	1,013
1994	720
1995	904
1996	1,157
1997	785
1998	1,169
1999	900
2000	1,214
2001	909
2002	840
2003	1,159
2004	985
2005	1,210
2006	1,285
2007	1,267
2008	593
2009	1,757
2010	878
2011	1,148
2012	1,070
2013	921
2014	1,348
2015	745
2016	609
2017	426
2018	699
2019	548
2020	361
2021	676
2022	1,071
2023	867
2024	581
2025	779
2026	806

Download the Data

Data for records on 1943-07-18: 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 10	153
10 to 20	21
20 to 30	8
30 to 40	5
40 to 50	2
50 to 60	0
60 to 70	1