Weather Records on 18 July 1939

424 weather records were set or tied worldwide on 18 July 1939. Highest significance: Halls Gap, AU.

Key Facts for 18 July 1939

On 18 July 1939, 424 weather records were set or tied at long-record stations worldwide.
85 were record highs and 185 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 15 monthly and 407 daily.
Halls Gap set a daily record precipitation of 51.3 mm (2.0 in) on 18 July 1939.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 462 records.

Record Map

424 stations

424 station records on 18 July 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Halls Gap	Australia	Record daily precipitation	51.3 mm (2.0 in)	49 of 100 (Notable)
Deland 1 SSE	United States	Record daily precipitation	92.7 mm (3.6 in)	48 of 100 (Notable)
Wickliffe	Australia	Record daily precipitation	36.8 mm (1.4 in)	46 of 100 (Notable)
Watseka Public Works	United States	Record daily precipitation	91.4 mm (3.6 in)	46 of 100 (Notable)
Anderson 1 N	United States	Record daily precipitation	63.5 mm (2.5 in)	46 of 100 (Notable)
Penshurst (Post Office)	Australia	Record daily precipitation	25.4 mm (1.0 in)	42 of 100 (Notable)
Delphi 2 N	United States	Record daily precipitation	52.1 mm (2.1 in)	41 of 100 (Notable)
W Lafayette 6 NW	United States	Record daily precipitation	123.2 mm (4.9 in)	40 of 100 (Notable)
Mudhol	India	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Upper Sandusky	United States	Record low maximum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Eversley	Australia	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Shirala	India	Record daily precipitation	73.7 mm (2.9 in)	36 of 100 (Notable)
Islampur	India	Record daily precipitation	55.1 mm (2.2 in)	35 of 100 (Notable)
Elmhurst	Australia	Record daily precipitation	33.3 mm (1.3 in)	34 of 100 (Routine)
Pontiac	United States	Record daily precipitation	43.7 mm (1.7 in)	33 of 100 (Routine)
Richmond Wtr Wks	United States	Record daily precipitation	42.7 mm (1.7 in)	33 of 100 (Routine)
Whitestown	United States	Record daily precipitation	64.3 mm (2.5 in)	33 of 100 (Routine)
Las Vegas 2 NW	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Veedersburg	United States	Record daily precipitation	76.2 mm (3.0 in)	32 of 100 (Routine)
Roswell Muni AP	United States	Record daily precipitation	32.8 mm (1.3 in)	32 of 100 (Routine)
Danville	United States	Record daily precipitation	52.1 mm (2.1 in)	31 of 100 (Routine)
Macarthur (Glenhuntly)	Australia	Record daily precipitation	29.7 mm (1.2 in)	28 of 100 (Routine)
Brockville	Canada	Record low minimum temperature	9.4 C (48.9 F)	28 of 100 (Routine)
Hungund	India	Record daily precipitation	26.7 mm (1.1 in)	28 of 100 (Routine)
Greenfield	United States	Record daily precipitation	41.9 mm (1.6 in)	28 of 100 (Routine)
Bilgi	India	Record daily precipitation	36.1 mm (1.4 in)	27 of 100 (Routine)
Karhal	India	Record daily precipitation	123.2 mm (4.9 in)	27 of 100 (Routine)
Kiev	Ukraine	Record high minimum temperature	22.7 C (72.9 F)	26 of 100 (Routine)
Garden City	United States	Record daily precipitation	41.9 mm (1.6 in)	26 of 100 (Routine)
Grand Meadow	United States	Record low maximum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
New Westminster	Canada	Record low maximum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Hillsdown	Canada	Record low minimum temperature	1.7 C (35.1 F)	25 of 100 (Routine)
Crawfordsville Pwr Plt	United States	Record daily precipitation	118.6 mm (4.7 in)	25 of 100 (Routine)
Lachmangarh	India	Record daily precipitation	67.3 mm (2.6 in)	24 of 100 (Routine)
Mqanduli (Tnk)	South Africa	Record daily precipitation	27.2 mm (1.1 in)	24 of 100 (Routine)
Kokomo 3 WSW	United States	Record daily precipitation	36.8 mm (1.4 in)	24 of 100 (Routine)
Winamac 2SSE	United States	Record low maximum temperature	21.7 C (71.1 F)	24 of 100 (Routine)
Karad	India	Record daily precipitation	38.6 mm (1.5 in)	23 of 100 (Routine)
Feodosiia	Ukraine	Record high maximum temperature	34.6 C (94.3 F)	23 of 100 (Routine)
Walnut	United States	Record low maximum temperature	22.2 C (72.0 F)	23 of 100 (Routine)
Earlington	United States	Record high minimum temperature	25.6 C (78.1 F)	23 of 100 (Routine)
Port Said	Egypt	Record high maximum temperature	36.0 C (96.8 F)	22 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record high minimum temperature	22.2 C (72.0 F)	22 of 100 (Routine)
Minonk	United States	Record low maximum temperature	22.2 C (72.0 F)	22 of 100 (Routine)
Collegeville St Joe AP	United States	Record daily precipitation	48.3 mm (1.9 in)	22 of 100 (Routine)
Huntington	United States	Record low maximum temperature	21.7 C (71.1 F)	22 of 100 (Routine)
Cairo 3 S	United States	Record low maximum temperature	23.3 C (73.9 F)	22 of 100 (Routine)
New Orleans Audubon	United States	Record high maximum temperature	36.7 C (98.1 F)	22 of 100 (Routine)
Degilbo Rail STN	Australia	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Delphi 2 N	United States	Record low maximum temperature	23.9 C (75.0 F)	21 of 100 (Routine)
Emmitsburg	United States	Record low maximum temperature	22.2 C (72.0 F)	21 of 100 (Routine)
Ashland	United States	Record low maximum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Claysville 3 W	United States	Record low maximum temperature	20.0 C (68.0 F)	21 of 100 (Routine)
Willaura (Main Street)	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Glenthompson (Brie Brie)	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Goldstream Lake	Canada	Record daily precipitation	9.9 mm (0.39 in)	20 of 100 (Routine)
Casterton Post Office	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Nanaimo	Canada	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Ft Wayne Maumee	United States	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Pearston (Pol)	South Africa	Record daily precipitation	3.8 mm (0.15 in)	20 of 100 (Routine)

Counts by Type and Timescale

424 records

Records set or tied on 18 July 1939 by type: Highest daily maximum 36, Lowest daily maximum 121, Highest daily minimum 49, Lowest daily minimum 64, Heaviest daily rainfall 154.

Records on 18 July 1939 by type
Record type	Records
Highest daily maximum	36
Lowest daily maximum	121
Highest daily minimum	49
Lowest daily minimum	64
Heaviest daily rainfall	154
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1939 by timescale: all-time 2, monthly 15, daily 407.

How Much Records Were Beaten By

323 broken records

Margins by which the 323 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 73.4. Ties are not counted.

Top 20 by Significance

18 July 1939

Top 20 records on 18 July 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1939	Halls Gap, AU	daily rain	51.3 mm (2.0 in)	33.3 mm (1.3 in)	21 years	49 of 100 (Notable)
18 July 1939	Deland 1 SSE, US	daily rain	92.7 mm (3.6 in)	73.4 mm (2.9 in)	16 years	48 of 100 (Notable)
18 July 1939	Wickliffe, AU	daily rain	36.8 mm (1.4 in)	28.4 mm (1.1 in)	1 year	46 of 100 (Notable)
18 July 1939	Watseka Public Works, US	daily rain	91.4 mm (3.6 in)	67.0 mm (2.6 in)	8 years	46 of 100 (Notable)
18 July 1939	Anderson 1 N, US	daily rain	63.5 mm (2.5 in)	45.2 mm (1.8 in)	36 years	46 of 100 (Notable)
18 July 1939	Penshurst (Post Office), AU	daily rain	25.4 mm (1.0 in)	15.2 mm (0.6 in)	21 years	42 of 100 (Notable)
18 July 1939	Delphi 2 N, US	daily rain	52.1 mm (2.1 in)	42.7 mm (1.7 in)	10 years	41 of 100 (Notable)
18 July 1939	W Lafayette 6 NW, US	all-time rain	123.2 mm (4.9 in)	18.8 mm (0.7 in)	12 years	40 of 100 (Notable)
18 July 1939	Mudhol, IN	daily rain	38.1 mm (1.5 in)	33.5 mm (1.3 in)	24 years	38 of 100 (Notable)
18 July 1939	Upper Sandusky, US	monthly low max	13.9 C (57.0 F)	4.4 C (7.9 F)	43 years	38 of 100 (Notable)
18 July 1939	Eversley, AU	daily rain	28.2 mm (1.1 in)	13.7 mm (0.5 in)	38 years	36 of 100 (Notable)
18 July 1939	Shirala, IN	daily rain	73.7 mm (2.9 in)	36.4 mm (1.4 in)	24 years	36 of 100 (Notable)
18 July 1939	Islampur, IN	daily rain	55.1 mm (2.2 in)	27.9 mm (1.1 in)	24 years	35 of 100 (Notable)
18 July 1939	Elmhurst, AU	daily rain	33.3 mm (1.3 in)	17.3 mm (0.7 in)	22 years	34 of 100 (Routine)
18 July 1939	Pontiac, US	daily rain	43.7 mm (1.7 in)	28.5 mm (1.1 in)	21 years	33 of 100 (Routine)
18 July 1939	Richmond Wtr Wks, US	daily rain	42.7 mm (1.7 in)	23.4 mm (0.9 in)	36 years	33 of 100 (Routine)
18 July 1939	Whitestown, US	daily rain	64.3 mm (2.5 in)	36.1 mm (1.4 in)	22 years	33 of 100 (Routine)
18 July 1939	Las Vegas 2 NW, US	daily high min	19.4 C (66.9 F)	3.8 C (6.8 F)	42 years	33 of 100 (Routine)
18 July 1939	Veedersburg, US	daily rain	76.2 mm (3.0 in)	43.2 mm (1.7 in)	2 years	32 of 100 (Routine)
18 July 1939	Roswell Muni AP, US	daily rain	32.8 mm (1.3 in)	22.1 mm (0.9 in)	30 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

1793 to 1939

Records set or tied on this calendar date in each year from 1793 to 1939. 1939 had 424 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 1939-07-18: 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	277
10 to 20	23
20 to 30	10
30 to 40	8
40 to 50	3
50 to 60	0
60 to 70	1
70 to 80	1