Weather Records on 18 July 1938

306 weather records were set or tied worldwide on 18 July 1938. Highest significance: Unnao, IN.

Key Facts for 18 July 1938

On 18 July 1938, 306 weather records were set or tied at long-record stations worldwide.
43 were record highs and 47 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 289 daily.
Unnao set a monthly record daily precipitation of 254.0 mm (10.0 in) on 18 July 1938.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

306 stations

306 station records on 18 July 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Unnao	India	Record daily precipitation	254.0 mm (10.0 in)	60 of 100 (Major)
Mascoutah	United States	Record daily precipitation	79.2 mm (3.1 in)	54 of 100 (Notable)
Iglas	India	Record daily precipitation	210.6 mm (8.3 in)	53 of 100 (Notable)
Paoli	United States	Record daily precipitation	82.3 mm (3.2 in)	53 of 100 (Notable)
Madison Sewage Plt	United States	Record daily precipitation	69.1 mm (2.7 in)	52 of 100 (Notable)
Rae Bareli	India	Record daily precipitation	220.5 mm (8.7 in)	51 of 100 (Notable)
Salem	United States	Record daily precipitation	75.2 mm (3.0 in)	51 of 100 (Notable)
Tezpur	India	Record daily precipitation	139.7 mm (5.5 in)	50 of 100 (Notable)
Hathras	India	Record daily precipitation	144.3 mm (5.7 in)	49 of 100 (Notable)
Bookara	Australia	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Khajwa	India	Record daily precipitation	181.9 mm (7.2 in)	46 of 100 (Notable)
Sadabad	India	Record daily precipitation	126.2 mm (5.0 in)	46 of 100 (Notable)
Firozabad	India	Record daily precipitation	168.7 mm (6.6 in)	45 of 100 (Notable)
Orai	India	Record daily precipitation	158.0 mm (6.2 in)	45 of 100 (Notable)
Huntingburg AP	United States	Record daily precipitation	83.8 mm (3.3 in)	45 of 100 (Notable)
St Georges	Canada	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Pailani	India	Record daily precipitation	133.4 mm (5.3 in)	44 of 100 (Notable)
Maristova	Norway	Record daily precipitation	27.0 mm (1.1 in)	44 of 100 (Notable)
Salon	India	Record daily precipitation	137.7 mm (5.4 in)	43 of 100 (Notable)
Union City	United States	Record daily precipitation	72.1 mm (2.8 in)	43 of 100 (Notable)
Winchendon	United States	Record daily precipitation	51.3 mm (2.0 in)	42 of 100 (Notable)
Etmadpur	India	Record daily precipitation	147.3 mm (5.8 in)	41 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	49.0 mm (1.9 in)	41 of 100 (Notable)
Golconda River	United States	Record daily precipitation	62.2 mm (2.4 in)	39 of 100 (Notable)
Winnipeg St Johns Coll	Canada	Record daily precipitation	46.5 mm (1.8 in)	38 of 100 (Notable)
Steamboat Springs	United States	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Washington 1 W	United States	Record daily precipitation	51.8 mm (2.0 in)	38 of 100 (Notable)
Amherst	United States	Record daily precipitation	52.6 mm (2.1 in)	38 of 100 (Notable)
New Madrid	United States	Record daily precipitation	70.6 mm (2.8 in)	38 of 100 (Notable)
Maharajganj	India	Record daily precipitation	184.2 mm (7.3 in)	37 of 100 (Notable)
Grafton	United States	Record daily precipitation	45.5 mm (1.8 in)	37 of 100 (Notable)
Middleboro	United States	Record daily precipitation	39.4 mm (1.6 in)	36 of 100 (Notable)
Sikandra Rao	India	Record daily precipitation	100.8 mm (4.0 in)	35 of 100 (Notable)
Jalesar	India	Record daily precipitation	87.6 mm (3.4 in)	35 of 100 (Notable)
Corning	United States	Record daily precipitation	111.8 mm (4.4 in)	35 of 100 (Notable)
Salem	United States	Record daily precipitation	97.3 mm (3.8 in)	35 of 100 (Notable)
Scottsburg	United States	Record daily precipitation	89.7 mm (3.5 in)	34 of 100 (Routine)
Bulandshahr	India	Record daily precipitation	105.2 mm (4.1 in)	33 of 100 (Routine)
Hampton	United States	Record daily precipitation	33.8 mm (1.3 in)	33 of 100 (Routine)
Digby	Canada	Record daily precipitation	29.5 mm (1.2 in)	32 of 100 (Routine)
Marengo	United States	Record daily precipitation	96.5 mm (3.8 in)	31 of 100 (Routine)
Caruthersville	United States	Record daily precipitation	57.2 mm (2.3 in)	31 of 100 (Routine)
Padrauna	India	Record daily precipitation	131.8 mm (5.2 in)	30 of 100 (Routine)
Sarila	India	Record daily precipitation	110.5 mm (4.4 in)	30 of 100 (Routine)
Hasanganj	India	Record daily precipitation	108.7 mm (4.3 in)	30 of 100 (Routine)
Saharanpur	India	Record daily precipitation	110.5 mm (4.4 in)	29 of 100 (Routine)
Earlington	United States	Record daily precipitation	37.8 mm (1.5 in)	29 of 100 (Routine)
Dalmau	India	Record daily precipitation	124.0 mm (4.9 in)	28 of 100 (Routine)
Cream Hill	United States	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Mt Carmel	United States	Record daily precipitation	115.3 mm (4.5 in)	28 of 100 (Routine)
Mt Carmel 4 NW	United States	Record daily precipitation	115.3 mm (4.5 in)	27 of 100 (Routine)
Coleman	United States	Record low maximum temperature	23.3 C (73.9 F)	27 of 100 (Routine)
Ft Stockton 1	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Khair	India	Record daily precipitation	77.0 mm (3.0 in)	26 of 100 (Routine)
Purwa	India	Record daily precipitation	165.1 mm (6.5 in)	26 of 100 (Routine)
Haverhill	United States	Record daily precipitation	45.7 mm (1.8 in)	26 of 100 (Routine)
Cairo River	United States	Record daily precipitation	59.2 mm (2.3 in)	25 of 100 (Routine)
Paducah	United States	Record daily precipitation	54.6 mm (2.1 in)	25 of 100 (Routine)
Chelsea	United States	Record daily precipitation	28.4 mm (1.1 in)	25 of 100 (Routine)
Northampton	Australia	Record daily precipitation	33.5 mm (1.3 in)	24 of 100 (Routine)

Counts by Type and Timescale

306 records

Records set or tied on 18 July 1938 by type: Highest daily maximum 12, Lowest daily maximum 37, Highest daily minimum 31, Lowest daily minimum 10, Heaviest daily rainfall 216.

Records on 18 July 1938 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	37
Highest daily minimum	31
Lowest daily minimum	10
Heaviest daily rainfall	216
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1938 by timescale: all-time 0, monthly 17, daily 289.

How Much Records Were Beaten By

265 broken records

Margins by which the 265 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 151.1. Ties are not counted.

Top 20 by Significance

18 July 1938

Top 20 records on 18 July 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1938	Unnao, IN	monthly rain	254.0 mm (10.0 in)	151.1 mm (5.9 in)	24 years	60 of 100 (Major)
18 July 1938	Mascoutah, US	daily rain	79.2 mm (3.1 in)	62.4 mm (2.5 in)	35 years	54 of 100 (Notable)
18 July 1938	Iglas, IN	monthly rain	210.6 mm (8.3 in)	100.6 mm (4.0 in)	1 year	53 of 100 (Notable)
18 July 1938	Paoli, US	daily rain	82.3 mm (3.2 in)	64.0 mm (2.5 in)	31 years	53 of 100 (Notable)
18 July 1938	Madison Sewage Plt, US	daily rain	69.1 mm (2.7 in)	48.8 mm (1.9 in)	36 years	52 of 100 (Notable)
18 July 1938	Rae Bareli, IN	monthly rain	220.5 mm (8.7 in)	78.3 mm (3.1 in)	13 years	51 of 100 (Notable)
18 July 1938	Salem, US	daily rain	75.2 mm (3.0 in)	43.7 mm (1.7 in)	29 years	51 of 100 (Notable)
18 July 1938	Tezpur, IN	daily rain	139.7 mm (5.5 in)	99.1 mm (3.9 in)	24 years	50 of 100 (Notable)
18 July 1938	Hathras, IN	daily rain	144.3 mm (5.7 in)	95.5 mm (3.8 in)	20 years	49 of 100 (Notable)
18 July 1938	Bookara, AU	daily rain	47.5 mm (1.9 in)	38.6 mm (1.5 in)	16 years	48 of 100 (Notable)
18 July 1938	Khajwa, IN	daily rain	181.9 mm (7.2 in)	127.3 mm (5.0 in)	12 years	46 of 100 (Notable)
18 July 1938	Sadabad, IN	daily rain	126.2 mm (5.0 in)	96.2 mm (3.8 in)	11 years	46 of 100 (Notable)
18 July 1938	Firozabad, IN	monthly rain	168.7 mm (6.6 in)	44.2 mm (1.7 in)	33 years	45 of 100 (Notable)
18 July 1938	Orai, IN	daily rain	158.0 mm (6.2 in)	88.7 mm (3.5 in)	8 years	45 of 100 (Notable)
18 July 1938	Huntingburg AP, US	daily rain	83.8 mm (3.3 in)	55.9 mm (2.2 in)	23 years	45 of 100 (Notable)
18 July 1938	St Georges, CA	daily rain	33.0 mm (1.3 in)	18.5 mm (0.7 in)	0 years	44 of 100 (Notable)
18 July 1938	Pailani, IN	daily rain	133.4 mm (5.3 in)	97.6 mm (3.8 in)	16 years	44 of 100 (Notable)
18 July 1938	Maristova, NO	daily rain	27.0 mm (1.1 in)	16.0 mm (0.6 in)	23 years	44 of 100 (Notable)
18 July 1938	Salon, IN	daily rain	137.7 mm (5.4 in)	103.7 mm (4.1 in)	0 years	43 of 100 (Notable)
18 July 1938	Union City, US	daily rain	72.1 mm (2.8 in)	48.0 mm (1.9 in)	35 years	43 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

1793 to 1938

Records set or tied on this calendar date in each year from 1793 to 1938. 1938 had 306 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 1938-07-18: 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 20	203
20 to 40	34
40 to 60	14
60 to 80	5
80 to 100	5
100 to 120	2
120 to 140	1
140 to 160	1