Weather Records on 18 August 1939

381 weather records were set or tied worldwide on 18 August 1939. Highest significance: Toccoa, US.

Key Facts for 18 August 1939

On 18 August 1939, 381 weather records were set or tied at long-record stations worldwide.
107 were record highs and 31 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 17 monthly and 363 daily.
Toccoa set a monthly record daily precipitation of 154.7 mm (6.1 in) on 18 August 1939.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 441 records.

Record Map

381 stations

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

Weather records on 18 August 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Toccoa	United States	Record daily precipitation	154.7 mm (6.1 in)	57 of 100 (Notable)
Ueckermunde	Germany	Record daily precipitation	53.5 mm (2.1 in)	54 of 100 (Notable)
Brevard	United States	Record daily precipitation	114.0 mm (4.5 in)	50 of 100 (Notable)
Wani	India	Record daily precipitation	120.7 mm (4.8 in)	49 of 100 (Notable)
Asheville Pearson St	United States	Record daily precipitation	52.8 mm (2.1 in)	47 of 100 (Notable)
Jefferson 2 E	United States	Record daily precipitation	99.6 mm (3.9 in)	47 of 100 (Notable)
Rampur	India	Record daily precipitation	184.4 mm (7.3 in)	46 of 100 (Notable)
Lenoir	United States	Record daily precipitation	81.3 mm (3.2 in)	46 of 100 (Notable)
Fichtelberg	Germany	Record daily precipitation	43.5 mm (1.7 in)	44 of 100 (Notable)
Devgad	India	Record daily precipitation	129.5 mm (5.1 in)	44 of 100 (Notable)
Greenville	United States	Record daily precipitation	88.9 mm (3.5 in)	44 of 100 (Notable)
Banner Elk	United States	Record daily precipitation	78.7 mm (3.1 in)	44 of 100 (Notable)
Lynchburg - Coop	United States	Record daily precipitation	102.6 mm (4.0 in)	44 of 100 (Notable)
Winston Salem Reynolds AP	United States	Record daily precipitation	113.5 mm (4.5 in)	43 of 100 (Notable)
Raleigh State UNIV	United States	Record daily precipitation	76.2 mm (3.0 in)	41 of 100 (Notable)
Blacksburg	United States	Record daily precipitation	62.2 mm (2.4 in)	40 of 100 (Notable)
Covington	United States	Record daily precipitation	77.7 mm (3.1 in)	39 of 100 (Notable)
Talbotton	United States	Record daily precipitation	108.0 mm (4.3 in)	39 of 100 (Notable)
Roanoke	United States	Record daily precipitation	116.8 mm (4.6 in)	39 of 100 (Notable)
Yellapur	India	Record daily precipitation	116.3 mm (4.6 in)	38 of 100 (Notable)
White Sulphur Springs	United States	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Belgaum	India	Record daily precipitation	68.1 mm (2.7 in)	37 of 100 (Notable)
Chandgad	India	Record daily precipitation	141.0 mm (5.6 in)	37 of 100 (Notable)
Athens	United States	Record daily precipitation	82.3 mm (3.2 in)	37 of 100 (Notable)
Walhalla	United States	Record daily precipitation	113.0 mm (4.4 in)	37 of 100 (Notable)
Saraipali	India	Record daily precipitation	161.3 mm (6.4 in)	36 of 100 (Notable)
Gillsville	United States	Record daily precipitation	99.1 mm (3.9 in)	36 of 100 (Notable)
Highlands	United States	Record daily precipitation	52.3 mm (2.1 in)	35 of 100 (Notable)
Rochford 2 WNW	United States	Record daily precipitation	41.1 mm (1.6 in)	35 of 100 (Notable)
Sarangarh	India	Record daily precipitation	137.2 mm (5.4 in)	34 of 100 (Routine)
Vengurla	India	Record daily precipitation	78.2 mm (3.1 in)	34 of 100 (Routine)
Carlton Brg	United States	Record daily precipitation	64.8 mm (2.6 in)	34 of 100 (Routine)
Geneseo	United States	Record daily precipitation	61.7 mm (2.4 in)	34 of 100 (Routine)
Pana	United States	Record daily precipitation	115.1 mm (4.5 in)	34 of 100 (Routine)
Mt Airy 2 W	United States	Record daily precipitation	117.9 mm (4.6 in)	34 of 100 (Routine)
Holalkhere	India	Record daily precipitation	73.7 mm (2.9 in)	33 of 100 (Routine)
Caroleen	United States	Record daily precipitation	79.2 mm (3.1 in)	33 of 100 (Routine)
Veedersburg	United States	Record daily precipitation	92.7 mm (3.6 in)	32 of 100 (Routine)
Hendersonville 1 NE	United States	Record daily precipitation	69.1 mm (2.7 in)	32 of 100 (Routine)
Clemson UNIV	United States	Record daily precipitation	88.1 mm (3.5 in)	32 of 100 (Routine)
Kusrangi	India	Record daily precipitation	210.8 mm (8.3 in)	31 of 100 (Routine)
Paris Stp	United States	Record daily precipitation	63.0 mm (2.5 in)	31 of 100 (Routine)
Bolangir	India	Record daily precipitation	134.9 mm (5.3 in)	30 of 100 (Routine)
Avon Park 2 W	United States	Record daily precipitation	72.4 mm (2.9 in)	30 of 100 (Routine)
Dahlonega 4WSW	United States	Record daily precipitation	66.3 mm (2.6 in)	30 of 100 (Routine)
Grafton	United States	Record daily precipitation	49.3 mm (1.9 in)	30 of 100 (Routine)
Morrisonville 4 SE	United States	Record daily precipitation	111.5 mm (4.4 in)	30 of 100 (Routine)
Baton Rouge	United States	Record daily precipitation	54.9 mm (2.2 in)	30 of 100 (Routine)
Settle	United States	Record daily precipitation	96.8 mm (3.8 in)	30 of 100 (Routine)
Khanpur	India	Record daily precipitation	84.8 mm (3.3 in)	29 of 100 (Routine)
Monroe 2 SE	United States	Record daily precipitation	71.6 mm (2.8 in)	29 of 100 (Routine)
Waynesville 1 E	United States	Record daily precipitation	44.7 mm (1.8 in)	29 of 100 (Routine)
Athmalik	India	Record daily precipitation	88.1 mm (3.5 in)	27 of 100 (Routine)
Deogarh (Bamra)	India	Record daily precipitation	220.5 mm (8.7 in)	27 of 100 (Routine)
Naduvattam	India	Record daily precipitation	102.6 mm (4.0 in)	27 of 100 (Routine)
Represa	United States	Record high minimum temperature	27.8 C (82.0 F)	27 of 100 (Routine)
Greensboro	United States	Record daily precipitation	64.5 mm (2.5 in)	27 of 100 (Routine)
Boonville	United States	Record daily precipitation	60.5 mm (2.4 in)	27 of 100 (Routine)
Breton	Australia	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Beaufort	United States	Record high minimum temperature	28.3 C (82.9 F)	26 of 100 (Routine)

Counts by Type and Timescale

381 records

Records set or tied on 18 August 1939 by type: Highest daily maximum 64, Lowest daily maximum 19, Highest daily minimum 43, Lowest daily minimum 12, Heaviest daily rainfall 243.

Records on 18 August 1939 by type
Record type	Records
Highest daily maximum	64
Lowest daily maximum	19
Highest daily minimum	43
Lowest daily minimum	12
Heaviest daily rainfall	243
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1939 by timescale: all-time 1, monthly 17, daily 363.

How Much Records Were Beaten By

300 broken records

Margins by which the 300 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.7. Ties are not counted.

Top 20 by Significance

18 August 1939

Top 20 records on 18 August 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1939	Toccoa, US	monthly rain	154.7 mm (6.1 in)	62.2 mm (2.4 in)	11 years	57 of 100 (Notable)
18 August 1939	Ueckermunde, DE	daily rain	53.5 mm (2.1 in)	33.5 mm (1.3 in)	32 years	54 of 100 (Notable)
18 August 1939	Brevard, US	daily rain	114.0 mm (4.5 in)	91.4 mm (3.6 in)	24 years	50 of 100 (Notable)
18 August 1939	Wani, IN	daily rain	120.7 mm (4.8 in)	73.5 mm (2.9 in)	36 years	49 of 100 (Notable)
18 August 1939	Asheville Pearson St, US	daily rain	52.8 mm (2.1 in)	32.0 mm (1.3 in)	51 years	47 of 100 (Notable)
18 August 1939	Jefferson 2 E, US	monthly rain	99.6 mm (3.9 in)	31.0 mm (1.2 in)	25 years	47 of 100 (Notable)
18 August 1939	Rampur, IN	daily rain	184.4 mm (7.3 in)	92.7 mm (3.6 in)	28 years	46 of 100 (Notable)
18 August 1939	Lenoir, US	daily rain	81.3 mm (3.2 in)	38.1 mm (1.5 in)	65 years	46 of 100 (Notable)
18 August 1939	Fichtelberg, DE	daily rain	43.5 mm (1.7 in)	29.3 mm (1.2 in)	28 years	44 of 100 (Notable)
18 August 1939	Devgad, IN	daily rain	129.5 mm (5.1 in)	89.4 mm (3.5 in)	4 years	44 of 100 (Notable)
18 August 1939	Greenville, US	daily rain	88.9 mm (3.5 in)	43.2 mm (1.7 in)	36 years	44 of 100 (Notable)
18 August 1939	Banner Elk, US	daily rain	78.7 mm (3.1 in)	48.2 mm (1.9 in)	20 years	44 of 100 (Notable)
18 August 1939	Lynchburg - Coop, US	daily rain	102.6 mm (4.0 in)	55.4 mm (2.2 in)	4 years	44 of 100 (Notable)
18 August 1939	Winston Salem Reynolds AP, US	monthly rain	113.5 mm (4.5 in)	29.7 mm (1.2 in)	30 years	43 of 100 (Notable)
18 August 1939	Raleigh State UNIV, US	daily rain	76.2 mm (3.0 in)	50.5 mm (2.0 in)	20 years	41 of 100 (Notable)
18 August 1939	Blacksburg, US	daily rain	62.2 mm (2.4 in)	36.5 mm (1.4 in)	12 years	40 of 100 (Notable)
18 August 1939	Covington, US	daily rain	77.7 mm (3.1 in)	34.5 mm (1.4 in)	41 years	39 of 100 (Notable)
18 August 1939	Talbotton, US	monthly rain	108.0 mm (4.3 in)	17.6 mm (0.7 in)	40 years	39 of 100 (Notable)
18 August 1939	Roanoke, US	monthly rain	116.8 mm (4.6 in)	30.4 mm (1.2 in)	11 years	39 of 100 (Notable)
18 August 1939	Yellapur, IN	daily rain	116.3 mm (4.6 in)	64.7 mm (2.5 in)	28 years	38 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

1797 to 1939

Records set or tied on this calendar date in each year from 1797 to 1939. 1939 had 381 records.

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

Records on 08-18 in each year
Year	Records
1797	2
1805	1
1816	1
1827	1
1829	1
1830	1
1833	1
1841	1
1844	1
1845	3
1846	1
1847	1
1849	1
1851	1
1852	1
1853	1
1854	2
1855	1
1856	1
1861	1
1864	2
1866	1
1868	2
1869	1
1870	2
1872	1
1873	1
1875	3
1876	1
1878	1
1879	2
1883	3
1885	3
1886	3
1887	3
1888	2
1889	1
1890	1
1891	2
1892	6
1893	4
1894	4
1895	1
1898	4
1899	6
1900	2
1901	10
1902	8
1903	6
1904	8
1905	10
1906	40
1907	7
1908	21
1909	24
1910	16
1911	11
1912	21
1913	43
1914	37
1915	60
1916	71
1917	70
1918	53
1919	34
1920	51
1921	39
1922	129
1923	90
1924	225
1925	300
1926	168
1927	269
1928	141
1929	181
1930	150
1931	241
1932	382
1933	431
1934	638
1935	424
1936	766
1937	308
1938	243
1939	381
1940	434
1941	467
1942	333
1943	738
1944	325
1945	400
1946	416
1947	958
1948	315
1949	393
1950	683
1951	355
1952	405
1953	323
1954	622
1955	795
1956	580
1957	380
1958	580
1959	537
1960	599
1961	415
1962	428
1963	760
1964	443
1965	525
1966	573
1967	623
1968	795
1969	530
1970	597
1971	381
1972	493
1973	734
1974	639
1975	844
1976	917
1977	1,112
1978	854
1979	1,309
1980	771
1981	1,386
1982	563
1983	1,420
1984	600
1985	765
1986	861
1987	1,609
1988	1,351
1989	952
1990	920
1991	533
1992	1,497
1993	706
1994	1,027
1995	1,882
1996	760
1997	1,191
1998	923
1999	888
2000	1,183
2001	1,036
2002	1,306
2003	860
2004	1,050
2005	865
2006	842
2007	1,116
2008	1,265
2009	839
2010	1,167
2011	1,239
2012	1,247
2013	752
2014	751
2015	880
2016	704
2017	565
2018	462
2019	615
2020	1,541
2021	1,118
2022	1,237
2023	1,094
2024	696
2025	455
2026	545

Download the Data

Data for records on 1939-08-18: 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	234
20 to 40	40
40 to 60	17
60 to 80	5
80 to 100	4