Weather Records on 17 August 1938

466 weather records were set or tied worldwide on 17 August 1938. Highest significance: Ron, IN.

Key Facts for 17 August 1938

On 17 August 1938, 466 weather records were set or tied at long-record stations worldwide.
266 were record highs and 48 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 9 monthly and 456 daily.
Ron set a daily record precipitation of 84.6 mm (3.3 in) on 17 August 1938.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 474 records.

Record Map

466 stations

466 station records on 17 August 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ron	India	Record daily precipitation	84.6 mm (3.3 in)	50 of 100 (Notable)
Lansing	United States	Record daily precipitation	79.8 mm (3.1 in)	50 of 100 (Notable)
Huntsville	Canada	Record daily precipitation	72.6 mm (2.9 in)	47 of 100 (Notable)
Huehue 92.1	United States	Record daily precipitation	40.4 mm (1.6 in)	47 of 100 (Notable)
Montreal McGill	Canada	Record daily precipitation	53.3 mm (2.1 in)	43 of 100 (Notable)
Calvin	United States	Record daily precipitation	106.7 mm (4.2 in)	42 of 100 (Notable)
Ringtown	United States	Record daily precipitation	68.3 mm (2.7 in)	41 of 100 (Notable)
Tirupoondi	India	Record daily precipitation	56.9 mm (2.2 in)	40 of 100 (Notable)
Darsi	India	Record daily precipitation	56.4 mm (2.2 in)	37 of 100 (Notable)
Kanakapura	India	Record daily precipitation	58.2 mm (2.3 in)	37 of 100 (Notable)
Ramanathapuram	India	Record daily precipitation	49.5 mm (1.9 in)	36 of 100 (Notable)
Shawinigan	Canada	Record daily precipitation	57.2 mm (2.3 in)	35 of 100 (Notable)
Addanki	India	Record daily precipitation	48.8 mm (1.9 in)	35 of 100 (Notable)
Haverhill	United States	Record daily precipitation	43.2 mm (1.7 in)	34 of 100 (Routine)
Escondido	United States	Record low maximum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Udayalipatti	India	Record daily precipitation	53.8 mm (2.1 in)	32 of 100 (Routine)
Thathaiengarpet	India	Record daily precipitation	137.2 mm (5.4 in)	31 of 100 (Routine)
Skaneateles	United States	Record daily precipitation	50.3 mm (2.0 in)	31 of 100 (Routine)
Baramulla	India	Record daily precipitation	33.5 mm (1.3 in)	29 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record daily precipitation	34.7 mm (1.4 in)	29 of 100 (Routine)
Flahult	Sweden	Record daily precipitation	31.2 mm (1.2 in)	29 of 100 (Routine)
New London	United States	Record daily precipitation	49.5 mm (1.9 in)	29 of 100 (Routine)
Narsipatnam	India	Record daily precipitation	92.7 mm (3.6 in)	28 of 100 (Routine)
Dhubri	India	Record daily precipitation	104.4 mm (4.1 in)	28 of 100 (Routine)
Tiruvaiyaru	India	Record daily precipitation	64.5 mm (2.5 in)	28 of 100 (Routine)
Elmira	United States	Record daily precipitation	41.9 mm (1.6 in)	28 of 100 (Routine)
Lake Placid 2 S	United States	Record daily precipitation	26.7 mm (1.1 in)	28 of 100 (Routine)
Pembroke Eddy Match	Canada	Record daily precipitation	26.2 mm (1.0 in)	26 of 100 (Routine)
Brantford	Canada	Record high minimum temperature	23.3 C (73.9 F)	26 of 100 (Routine)
Wolfville	Canada	Record high minimum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Northfield	United States	Record daily precipitation	69.6 mm (2.7 in)	26 of 100 (Routine)
Gloversville	United States	Record daily precipitation	31.8 mm (1.3 in)	26 of 100 (Routine)
Fort Gibson	United States	Record daily precipitation	57.9 mm (2.3 in)	26 of 100 (Routine)
Srinivaspur	India	Record daily precipitation	38.1 mm (1.5 in)	25 of 100 (Routine)
Tiruvannamalai	India	Record daily precipitation	118.6 mm (4.7 in)	25 of 100 (Routine)
Lake Cochituate	United States	Record daily precipitation	38.9 mm (1.5 in)	25 of 100 (Routine)
Viroqua	United States	Record daily precipitation	57.4 mm (2.3 in)	25 of 100 (Routine)
Lihue 1020	United States	Record low maximum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Itahar	India	Record daily precipitation	74.4 mm (2.9 in)	24 of 100 (Routine)
Weldon	United States	Record high maximum temperature	37.8 C (100.0 F)	24 of 100 (Routine)
Harrisburg River Gage	United States	Record daily precipitation	41.7 mm (1.6 in)	24 of 100 (Routine)
Sydney	Canada	Record high minimum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Uri	India	Record daily precipitation	28.4 mm (1.1 in)	23 of 100 (Routine)
Ozark	United States	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Plant City	United States	Record low minimum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Hamburg	United States	Record high minimum temperature	24.4 C (75.9 F)	23 of 100 (Routine)
La Crosse River	United States	Record daily precipitation	62.2 mm (2.4 in)	23 of 100 (Routine)
Stratford	Canada	Record high minimum temperature	22.8 C (73.0 F)	22 of 100 (Routine)
Hamilton	Canada	Record high minimum temperature	23.9 C (75.0 F)	22 of 100 (Routine)
Tiruvarur	India	Record daily precipitation	94.2 mm (3.7 in)	22 of 100 (Routine)
Karur	India	Record daily precipitation	41.9 mm (1.6 in)	22 of 100 (Routine)
Ulricehamn	Sweden	Record daily precipitation	25.7 mm (1.0 in)	22 of 100 (Routine)
Avon Park 2 W	United States	Record high maximum temperature	36.7 C (98.1 F)	22 of 100 (Routine)
Gardiner	United States	Record high minimum temperature	19.4 C (66.9 F)	22 of 100 (Routine)
Conway	United States	Record high maximum temperature	38.3 C (100.9 F)	22 of 100 (Routine)
Asifabad(Rev)	India	Record daily precipitation	58.7 mm (2.3 in)	21 of 100 (Routine)
Ongole	India	Record daily precipitation	32.3 mm (1.3 in)	21 of 100 (Routine)
Harrisburg - Coop	United States	Record daily precipitation	41.7 mm (1.6 in)	21 of 100 (Routine)
Georgetown 2 E	United States	Record high maximum temperature	37.2 C (99.0 F)	21 of 100 (Routine)
Beckley Va Hospital	United States	Record daily precipitation	30.2 mm (1.2 in)	21 of 100 (Routine)

Counts by Type and Timescale

466 records

Records set or tied on 17 August 1938 by type: Highest daily maximum 86, Lowest daily maximum 15, Highest daily minimum 180, Lowest daily minimum 33, Heaviest daily rainfall 152.

Records on 17 August 1938 by type
Record type	Records
Highest daily maximum	86
Lowest daily maximum	15
Highest daily minimum	180
Lowest daily minimum	33
Heaviest daily rainfall	152
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1938 by timescale: all-time 1, monthly 9, daily 456.

How Much Records Were Beaten By

354 broken records

Margins by which the 354 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 70.4. Ties are not counted.

Top 20 by Significance

17 August 1938

Top 20 records on 17 August 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1938	Ron, IN	daily rain	84.6 mm (3.3 in)	70.4 mm (2.8 in)	24 years	50 of 100 (Notable)
17 August 1938	Lansing, US	daily rain	79.8 mm (3.1 in)	57.7 mm (2.3 in)	20 years	50 of 100 (Notable)
17 August 1938	Huntsville, CA	daily rain	72.6 mm (2.9 in)	56.6 mm (2.2 in)	5 years	47 of 100 (Notable)
17 August 1938	Huehue 92.1, US	daily rain	40.4 mm (1.6 in)	32.3 mm (1.3 in)	29 years	47 of 100 (Notable)
17 August 1938	Montreal McGill, CA	daily rain	53.3 mm (2.1 in)	25.9 mm (1.0 in)	42 years	43 of 100 (Notable)
17 August 1938	Calvin, US	daily rain	106.7 mm (4.2 in)	58.4 mm (2.3 in)	32 years	42 of 100 (Notable)
17 August 1938	Ringtown, US	daily rain	68.3 mm (2.7 in)	52.0 mm (2.0 in)	13 years	41 of 100 (Notable)
17 August 1938	Tirupoondi, IN	daily rain	56.9 mm (2.2 in)	33.3 mm (1.3 in)	24 years	40 of 100 (Notable)
17 August 1938	Darsi, IN	daily rain	56.4 mm (2.2 in)	43.2 mm (1.7 in)	12 years	37 of 100 (Notable)
17 August 1938	Kanakapura, IN	daily rain	58.2 mm (2.3 in)	34.1 mm (1.3 in)	28 years	37 of 100 (Notable)
17 August 1938	Ramanathapuram, IN	daily rain	49.5 mm (1.9 in)	39.8 mm (1.6 in)	0 years	36 of 100 (Notable)
17 August 1938	Shawinigan, CA	daily rain	57.2 mm (2.3 in)	30.8 mm (1.2 in)	5 years	35 of 100 (Notable)
17 August 1938	Addanki, IN	daily rain	48.8 mm (1.9 in)	30.8 mm (1.2 in)	35 years	35 of 100 (Notable)
17 August 1938	Haverhill, US	daily rain	43.2 mm (1.7 in)	23.4 mm (0.9 in)	28 years	34 of 100 (Routine)
17 August 1938	Escondido, US	daily low max	20.0 C (68.0 F)	6.1 C (11.0 F)	38 years	33 of 100 (Routine)
17 August 1938	Udayalipatti, IN	daily rain	53.8 mm (2.1 in)	32.7 mm (1.3 in)	32 years	32 of 100 (Routine)
17 August 1938	Thathaiengarpet, IN	monthly rain	137.2 mm (5.4 in)	30.5 mm (1.2 in)	11 years	31 of 100 (Routine)
17 August 1938	Skaneateles, US	daily rain	50.3 mm (2.0 in)	28.2 mm (1.1 in)	9 years	31 of 100 (Routine)
17 August 1938	Baramulla, IN	daily rain	33.5 mm (1.3 in)	19.0 mm (0.7 in)	29 years	29 of 100 (Routine)
17 August 1938	Bogoroditskoye-Fenino, RU	daily rain	34.7 mm (1.4 in)	14.8 mm (0.6 in)	21 years	29 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 1938

Records set or tied on this calendar date in each year from 1797 to 1938. 1938 had 466 records.

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

Records on 08-17 in each year
Year	Records
1797	2
1802	2
1820	2
1837	1
1838	2
1841	2
1842	1
1845	2
1853	1
1854	1
1856	1
1857	1
1861	3
1862	1
1867	1
1868	3
1869	1
1872	1
1875	2
1876	5
1879	1
1881	1
1882	1
1883	2
1885	3
1886	1
1888	5
1891	1
1892	3
1893	2
1894	3
1895	2
1896	3
1897	1
1898	5
1899	8
1900	3
1901	14
1902	7
1903	6
1904	2
1905	11
1906	28
1907	9
1908	26
1909	24
1910	17
1911	18
1912	31
1913	79
1914	41
1915	28
1916	33
1917	35
1918	112
1919	37
1920	110
1921	37
1922	169
1923	161
1924	171
1925	130
1926	182
1927	228
1928	131
1929	243
1930	138
1931	302
1932	360
1933	260
1934	377
1935	437
1936	670
1937	726
1938	466
1939	364
1940	341
1941	378
1942	461
1943	743
1944	531
1945	387
1946	433
1947	682
1948	475
1949	371
1950	522
1951	413
1952	470
1953	345
1954	685
1955	465
1956	407
1957	504
1958	519
1959	543
1960	533
1961	998
1962	445
1963	650
1964	410
1965	641
1966	496
1967	679
1968	953
1969	593
1970	467
1971	447
1972	1,044
1973	750
1974	582
1975	612
1976	797
1977	1,216
1978	814
1979	1,464
1980	895
1981	1,112
1982	554
1983	1,574
1984	726
1985	948
1986	916
1987	1,150
1988	1,608
1989	687
1990	949
1991	560
1992	1,813
1993	803
1994	1,038
1995	1,724
1996	752
1997	1,544
1998	1,003
1999	697
2000	994
2001	1,101
2002	1,266
2003	948
2004	1,046
2005	722
2006	814
2007	1,646
2008	1,301
2009	922
2010	1,105
2011	956
2012	1,215
2013	802
2014	997
2015	890
2016	748
2017	544
2018	518
2019	467
2020	1,529
2021	800
2022	1,428
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 1938-08-17: 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	281
10 to 20	37
20 to 30	17
30 to 40	11
40 to 50	2
50 to 60	5
60 to 70	0
70 to 80	1