Weather Records on 31 July 1938

417 weather records were set or tied worldwide on 31 July 1938. Highest significance: Ridgetown, CA.

Key Facts for 31 July 1938

On 31 July 1938, 417 weather records were set or tied at long-record stations worldwide.
145 were record highs and 33 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 12 monthly and 403 daily.
Ridgetown set an all-time record daily precipitation of 113.0 mm (4.4 in) on 31 July 1938.
Across 155 earlier years (1804 to 2026) the same calendar date averaged 471 records.

Record Map

417 stations

417 station records on 31 July 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 July 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ridgetown	Canada	Record daily precipitation	113.0 mm (4.4 in)	63 of 100 (Major)
Krishnagiri	India	Record daily precipitation	154.9 mm (6.1 in)	59 of 100 (Notable)
Thammampatty	India	Record daily precipitation	129.5 mm (5.1 in)	59 of 100 (Notable)
New Madrid	United States	Record daily precipitation	127.0 mm (5.0 in)	55 of 100 (Notable)
Sikeston	United States	Record daily precipitation	105.4 mm (4.1 in)	55 of 100 (Notable)
Oberlin	United States	Record daily precipitation	63.5 mm (2.5 in)	55 of 100 (Notable)
Kangayam	India	Record daily precipitation	40.6 mm (1.6 in)	54 of 100 (Notable)
Namakkal	India	Record daily precipitation	65.8 mm (2.6 in)	52 of 100 (Notable)
Saundatti	India	Record daily precipitation	57.7 mm (2.3 in)	50 of 100 (Notable)
Sankari	India	Record daily precipitation	62.2 mm (2.4 in)	48 of 100 (Notable)
Jonesboro 3 SSE	United States	Record daily precipitation	89.9 mm (3.5 in)	47 of 100 (Notable)
Lakefield	Canada	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
Gonda	India	Record daily precipitation	175.5 mm (6.9 in)	46 of 100 (Notable)
Cairo River	United States	Record daily precipitation	110.2 mm (4.3 in)	46 of 100 (Notable)
Cape Grim (Woolnorth)	Australia	Record daily precipitation	55.1 mm (2.2 in)	45 of 100 (Notable)
Cherrapunji	India	Record daily precipitation	535.4 mm (21.1 in)	45 of 100 (Notable)
Adirampatanam	India	Record daily precipitation	100.3 mm (3.9 in)	45 of 100 (Notable)
St John Bethlehem Aca	United States	Record daily precipitation	62.5 mm (2.5 in)	45 of 100 (Notable)
Rio Grande City	United States	Record daily precipitation	109.7 mm (4.3 in)	45 of 100 (Notable)
Jowai	India	Record daily precipitation	174.0 mm (6.9 in)	44 of 100 (Notable)
Columbus Ohio St UNIV	United States	Record daily precipitation	56.6 mm (2.2 in)	44 of 100 (Notable)
Houston Wb City	United States	Record daily precipitation	67.3 mm (2.6 in)	43 of 100 (Notable)
Bowling Green Wwtp	United States	Record daily precipitation	49.5 mm (1.9 in)	42 of 100 (Notable)
1 ENE Fairfield	United States	Record daily precipitation	49.3 mm (1.9 in)	41 of 100 (Notable)
Deming	United States	Record daily precipitation	48.8 mm (1.9 in)	41 of 100 (Notable)
Kuppam	India	Record daily precipitation	85.6 mm (3.4 in)	39 of 100 (Notable)
Corning	United States	Record daily precipitation	143.3 mm (5.6 in)	39 of 100 (Notable)
Vardoe	Norway	Record daily precipitation	28.6 mm (1.1 in)	38 of 100 (Notable)
Cairo 3N	United States	Record daily precipitation	53.6 mm (2.1 in)	38 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	17.6 C (63.7 F)	37 of 100 (Notable)
Upper Shillong	India	Record daily precipitation	97.8 mm (3.9 in)	36 of 100 (Notable)
Erode	India	Record daily precipitation	41.7 mm (1.6 in)	36 of 100 (Notable)
Omalur	India	Record daily precipitation	66.5 mm (2.6 in)	36 of 100 (Notable)
Cape Girardeau	United States	Record daily precipitation	51.8 mm (2.0 in)	36 of 100 (Notable)
Brucefield	Canada	Record daily precipitation	57.7 mm (2.3 in)	35 of 100 (Notable)
Ariyalur	India	Record daily precipitation	68.3 mm (2.7 in)	35 of 100 (Notable)
Arkadelphia 2 N	United States	Record daily precipitation	94.2 mm (3.7 in)	35 of 100 (Notable)
Irvington	United States	Record daily precipitation	57.7 mm (2.3 in)	35 of 100 (Notable)
Poplar Bluff	United States	Record daily precipitation	52.1 mm (2.1 in)	35 of 100 (Notable)
Dickson	United States	Record daily precipitation	115.3 mm (4.5 in)	35 of 100 (Notable)
Pelee Island	Canada	Record daily precipitation	59.2 mm (2.3 in)	34 of 100 (Routine)
Bagaha	India	Record daily precipitation	215.6 mm (8.5 in)	34 of 100 (Routine)
Mawphlang Obsy	India	Record daily precipitation	140.0 mm (5.5 in)	34 of 100 (Routine)
Bhavani	India	Record daily precipitation	46.7 mm (1.8 in)	34 of 100 (Routine)
Tampa	United States	Record daily precipitation	56.6 mm (2.2 in)	34 of 100 (Routine)
Paducah	United States	Record daily precipitation	64.8 mm (2.6 in)	34 of 100 (Routine)
Bilasipara	India	Record daily precipitation	99.1 mm (3.9 in)	33 of 100 (Routine)
Covington 8 WNW	United States	Record daily precipitation	76.7 mm (3.0 in)	33 of 100 (Routine)
Kenton	United States	Record daily precipitation	36.1 mm (1.4 in)	33 of 100 (Routine)
Greencastle 1 W	United States	Record daily precipitation	29.2 mm (1.1 in)	31 of 100 (Routine)
Calhoun (1)	United States	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Ashwood	United States	Record daily precipitation	35.6 mm (1.4 in)	31 of 100 (Routine)
Sheohar	India	Record daily precipitation	119.4 mm (4.7 in)	30 of 100 (Routine)
Chingleput	India	Record daily precipitation	49.5 mm (1.9 in)	30 of 100 (Routine)
Salem	India	Record daily precipitation	49.0 mm (1.9 in)	30 of 100 (Routine)
Paramathi	India	Record daily precipitation	29.7 mm (1.2 in)	30 of 100 (Routine)
Serampore	India	Record daily precipitation	72.4 mm (2.9 in)	30 of 100 (Routine)
Winona	United States	Record daily precipitation	45.2 mm (1.8 in)	30 of 100 (Routine)
Guelph Oac	Canada	Record daily precipitation	48.8 mm (1.9 in)	29 of 100 (Routine)
Chemnitz	Germany	Record high minimum temperature	19.0 C (66.2 F)	29 of 100 (Routine)

Counts by Type and Timescale

417 records

Records set or tied on 31 July 1938 by type: Highest daily maximum 97, Lowest daily maximum 27, Highest daily minimum 48, Lowest daily minimum 6, Heaviest daily rainfall 239.

Records on 31 July 1938 by type
Record type	Records
Highest daily maximum	97
Lowest daily maximum	27
Highest daily minimum	48
Lowest daily minimum	6
Heaviest daily rainfall	239
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 July 1938 by timescale: all-time 2, monthly 12, daily 403.

How Much Records Were Beaten By

359 broken records

Margins by which the 359 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 358.9. Ties are not counted.

Top 20 by Significance

31 July 1938

Top 20 records on 31 July 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 1938	Ridgetown, CA	all-time rain	113.0 mm (4.4 in)	27.9 mm (1.1 in)	52 years	63 of 100 (Major)
31 July 1938	Krishnagiri, IN	monthly rain	154.9 mm (6.1 in)	64.2 mm (2.5 in)	22 years	59 of 100 (Notable)
31 July 1938	Thammampatty, IN	monthly rain	129.5 mm (5.1 in)	57.1 mm (2.2 in)	22 years	59 of 100 (Notable)
31 July 1938	New Madrid, US	daily rain	127.0 mm (5.0 in)	98.8 mm (3.9 in)	39 years	55 of 100 (Notable)
31 July 1938	Sikeston, US	daily rain	105.4 mm (4.1 in)	73.9 mm (2.9 in)	39 years	55 of 100 (Notable)
31 July 1938	Oberlin, US	daily rain	63.5 mm (2.5 in)	50.0 mm (2.0 in)	37 years	55 of 100 (Notable)
31 July 1938	Kangayam, IN	daily rain	40.6 mm (1.6 in)	40.6 mm (1.6 in)	36 years	54 of 100 (Notable)
31 July 1938	Namakkal, IN	daily rain	65.8 mm (2.6 in)	59.2 mm (2.3 in)	32 years	52 of 100 (Notable)
31 July 1938	Saundatti, IN	daily rain	57.7 mm (2.3 in)	51.9 mm (2.0 in)	25 years	50 of 100 (Notable)
31 July 1938	Sankari, IN	daily rain	62.2 mm (2.4 in)	46.7 mm (1.8 in)	36 years	48 of 100 (Notable)
31 July 1938	Jonesboro 3 SSE, US	daily rain	89.9 mm (3.5 in)	59.4 mm (2.3 in)	11 years	47 of 100 (Notable)
31 July 1938	Lakefield, CA	daily rain	41.9 mm (1.6 in)	28.2 mm (1.1 in)	40 years	46 of 100 (Notable)
31 July 1938	Gonda, IN	daily rain	175.5 mm (6.9 in)	106.9 mm (4.2 in)	27 years	46 of 100 (Notable)
31 July 1938	Cairo River, US	monthly rain	110.2 mm (4.3 in)	27.1 mm (1.1 in)	37 years	46 of 100 (Notable)
31 July 1938	Cape Grim (Woolnorth), AU	monthly rain	55.1 mm (2.2 in)	9.4 mm (0.37 in)	48 years	45 of 100 (Notable)
31 July 1938	Cherrapunji, IN	daily rain	535.4 mm (21.1 in)	358.9 mm (14.1 in)	24 years	45 of 100 (Notable)
31 July 1938	Adirampatanam, IN	daily rain	100.3 mm (3.9 in)	97.0 mm (3.8 in)	8 years	45 of 100 (Notable)
31 July 1938	St John Bethlehem Aca, US	daily rain	62.5 mm (2.5 in)	46.0 mm (1.8 in)	13 years	45 of 100 (Notable)
31 July 1938	Rio Grande City, US	monthly rain	109.7 mm (4.3 in)	31.0 mm (1.2 in)	34 years	45 of 100 (Notable)
31 July 1938	Jowai, IN	daily rain	174.0 mm (6.9 in)	132.6 mm (5.2 in)	24 years	44 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

1804 to 1938

Records set or tied on this calendar date in each year from 1804 to 1938. 1938 had 417 records.

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

Records on 07-31 in each year
Year	Records
1804	1
1815	1
1816	1
1828	1
1834	1
1839	1
1840	1
1841	2
1851	1
1858	2
1860	4
1863	1
1866	1
1873	2
1876	1
1879	1
1884	1
1885	1
1886	1
1887	5
1889	2
1890	2
1891	1
1892	1
1893	3
1894	2
1896	2
1897	2
1898	5
1900	1
1901	3
1902	4
1903	16
1904	12
1905	10
1906	14
1907	17
1908	22
1909	15
1910	21
1911	29
1912	14
1913	31
1914	28
1915	71
1916	63
1917	126
1918	39
1919	27
1920	168
1921	112
1922	24
1923	236
1924	97
1925	349
1926	226
1927	161
1928	145
1929	134
1930	143
1931	441
1932	314
1933	504
1934	449
1935	418
1936	548
1937	297
1938	417
1939	357
1940	415
1941	323
1942	342
1943	342
1944	312
1945	499
1946	426
1947	341
1948	341
1949	406
1950	511
1951	364
1952	472
1953	414
1954	459
1955	813
1956	574
1957	268
1958	374
1959	424
1960	622
1961	504
1962	348
1963	294
1964	637
1965	858
1966	606
1967	326
1968	637
1969	440
1970	576
1971	1,850
1972	667
1973	583
1974	363
1975	1,386
1976	530
1977	543
1978	754
1979	501
1980	1,047
1981	672
1982	767
1983	901
1984	777
1985	1,065
1986	1,021
1987	934
1988	940
1989	1,753
1990	911
1991	647
1992	1,169
1993	1,031
1994	1,207
1995	1,223
1996	1,084
1997	984
1998	1,195
1999	1,643
2000	1,001
2001	1,414
2002	1,080
2003	1,157
2004	779
2005	742
2006	1,405
2007	1,023
2008	911
2009	1,156
2010	1,485
2011	1,040
2012	712
2013	469
2014	1,000
2015	948
2016	501
2017	485
2018	1,135
2019	551
2020	1,034
2021	1,020
2022	861
2023	671
2024	748
2025	836
2026	754

Download the Data

Data for records on 1938-07-31: 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 50	337
50 to 100	17
100 to 150	3
150 to 200	1
200 to 250	0
250 to 300	0
300 to 350	0
350 to 400	1