Weather Records on 18 August 1937

308 weather records were set or tied worldwide on 18 August 1937. Highest significance: Vermillion 2 SE, US.

Key Facts for 18 August 1937

On 18 August 1937, 308 weather records were set or tied at long-record stations worldwide.
178 were record highs and 20 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 4 monthly and 302 daily.
Vermillion 2 SE set an all-time record daily precipitation of 162.1 mm (6.4 in) on 18 August 1937.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 442 records.

Record Map

308 stations

308 station records on 18 August 1937 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1937: highest significance records shown on the map
Station	Country	Type	Value	Significance
Vermillion 2 SE	United States	Record daily precipitation	162.1 mm (6.4 in)	68 of 100 (Major)
Armour	United States	Record daily precipitation	138.7 mm (5.5 in)	56 of 100 (Notable)
Golconda River	United States	Record daily precipitation	83.3 mm (3.3 in)	54 of 100 (Notable)
Monierkhal	India	Record daily precipitation	165.4 mm (6.5 in)	48 of 100 (Notable)
Sydney	Canada	Record daily precipitation	70.4 mm (2.8 in)	47 of 100 (Notable)
Scottsbluff W B Heilig Fld AP	United States	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Manitowoc	United States	Record daily precipitation	49.8 mm (2.0 in)	40 of 100 (Notable)
Koetong	Australia	Record daily precipitation	39.6 mm (1.6 in)	39 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	17.0 C (62.6 F)	39 of 100 (Notable)
Silchar	India	Record daily precipitation	119.4 mm (4.7 in)	36 of 100 (Notable)
Madison	United States	Record daily precipitation	38.9 mm (1.5 in)	32 of 100 (Routine)
Srimushnam	India	Record daily precipitation	91.4 mm (3.6 in)	30 of 100 (Routine)
Storm Lake	United States	Record daily precipitation	45.7 mm (1.8 in)	30 of 100 (Routine)
Coronga Peak	Australia	Record daily precipitation	25.4 mm (1.0 in)	28 of 100 (Routine)
Menno	United States	Record daily precipitation	121.9 mm (4.8 in)	28 of 100 (Routine)
Kaikalur	India	Record daily precipitation	64.0 mm (2.5 in)	27 of 100 (Routine)
Karimganj	India	Record daily precipitation	135.1 mm (5.3 in)	27 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record high minimum temperature	17.5 C (63.5 F)	26 of 100 (Routine)
Yarmouth	Canada	Record high minimum temperature	16.1 C (61.0 F)	24 of 100 (Routine)
Banpur	India	Record daily precipitation	52.1 mm (2.1 in)	24 of 100 (Routine)
Tindivanam	India	Record daily precipitation	74.9 mm (2.9 in)	24 of 100 (Routine)
Decatur Wtp	United States	Record daily precipitation	66.8 mm (2.6 in)	24 of 100 (Routine)
Le Mars	United States	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Setauket Strong	United States	Record high minimum temperature	23.3 C (73.9 F)	24 of 100 (Routine)
Johnsonville	United States	Record daily precipitation	48.8 mm (1.9 in)	24 of 100 (Routine)
Harnosand	Sweden	Record high minimum temperature	16.2 C (61.2 F)	23 of 100 (Routine)
Louisville 1 E	United States	Record low minimum temperature	17.2 C (63.0 F)	23 of 100 (Routine)
Vriddhachalam	India	Record daily precipitation	77.5 mm (3.1 in)	22 of 100 (Routine)
Jonkoping	Sweden	Record high minimum temperature	15.8 C (60.4 F)	22 of 100 (Routine)
Greensboro	United States	Record low minimum temperature	19.4 C (66.9 F)	22 of 100 (Routine)
Umea	Sweden	Record high minimum temperature	15.5 C (59.9 F)	21 of 100 (Routine)
Trenton 1 NNE	United States	Record low minimum temperature	16.1 C (61.0 F)	21 of 100 (Routine)
Stanley Post Office	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Glenormiston	Australia	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Merino (Glenorchy Estate)	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Bimerah	Australia	Record daily precipitation	2.8 mm (0.11 in)	20 of 100 (Routine)
Markapur	India	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Tulsa	United States	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Nymagee (Pyramid)	Australia	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Mercadool	Australia	Record daily precipitation	1.8 mm (0.07 in)	20 of 100 (Routine)
Srivilliputhur	India	Record daily precipitation	26.4 mm (1.0 in)	20 of 100 (Routine)
Mahackala	Russia	Record high minimum temperature	23.8 C (74.8 F)	20 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record high minimum temperature	16.7 C (62.1 F)	20 of 100 (Routine)
Skara 1	Sweden	Record high minimum temperature	15.2 C (59.4 F)	20 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record daily precipitation	0.3 mm (0.01 in)	20 of 100 (Routine)
Henichesk	Ukraine	Record high minimum temperature	24.6 C (76.3 F)	20 of 100 (Routine)
Audubon	United States	Record daily precipitation	59.4 mm (2.3 in)	20 of 100 (Routine)
Williamstown	United States	Record high minimum temperature	22.8 C (73.0 F)	20 of 100 (Routine)
Hay Springs	United States	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Lambertville River	United States	Record high maximum temperature	33.9 C (93.0 F)	20 of 100 (Routine)
Cooperstown	United States	Record high minimum temperature	20.6 C (69.1 F)	20 of 100 (Routine)
Ephrata	United States	Record high minimum temperature	23.3 C (73.9 F)	20 of 100 (Routine)
Windsor Kings College	Canada	Record daily precipitation	20.8 mm (0.8 in)	19 of 100 (Routine)
Badarpur	India	Record daily precipitation	100.1 mm (3.9 in)	19 of 100 (Routine)
Salida	United States	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Quakertown	United States	Record high minimum temperature	20.6 C (69.1 F)	19 of 100 (Routine)
Spencer	United States	Record high minimum temperature	21.7 C (71.1 F)	19 of 100 (Routine)
Burnie (No 1)	Australia	Record daily precipitation	22.4 mm (0.9 in)	18 of 100 (Routine)
Douglas Smelter	United States	Record daily precipitation	16.3 mm (0.6 in)	18 of 100 (Routine)
Sioux Ctr 2 SE	United States	Record daily precipitation	36.8 mm (1.4 in)	18 of 100 (Routine)

Counts by Type and Timescale

308 records

Records set or tied on 18 August 1937 by type: Highest daily maximum 41, Lowest daily maximum 4, Highest daily minimum 137, Lowest daily minimum 16, Heaviest daily rainfall 110.

Records on 18 August 1937 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	4
Highest daily minimum	137
Lowest daily minimum	16
Heaviest daily rainfall	110
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1937 by timescale: all-time 2, monthly 4, daily 302.

How Much Records Were Beaten By

240 broken records

Margins by which the 240 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 98.1. Ties are not counted.

Top 20 by Significance

18 August 1937

Top 20 records on 18 August 1937 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1937	Vermillion 2 SE, US	all-time rain	162.1 mm (6.4 in)	38.9 mm (1.5 in)	35 years	68 of 100 (Major)
18 August 1937	Armour, US	all-time rain	138.7 mm (5.5 in)	34.6 mm (1.4 in)	25 years	56 of 100 (Notable)
18 August 1937	Golconda River, US	daily rain	83.3 mm (3.3 in)	66.5 mm (2.6 in)	35 years	54 of 100 (Notable)
18 August 1937	Monierkhal, IN	daily rain	165.4 mm (6.5 in)	98.1 mm (3.9 in)	19 years	48 of 100 (Notable)
18 August 1937	Sydney, CA	daily rain	70.4 mm (2.8 in)	49.1 mm (1.9 in)	6 years	47 of 100 (Notable)
18 August 1937	Scottsbluff W B Heilig Fld AP, US	daily rain	29.0 mm (1.1 in)	24.9 mm (1.0 in)	19 years	41 of 100 (Notable)
18 August 1937	Manitowoc, US	daily rain	49.8 mm (2.0 in)	32.8 mm (1.3 in)	32 years	40 of 100 (Notable)
18 August 1937	Koetong, AU	daily rain	39.6 mm (1.6 in)	33.0 mm (1.3 in)	34 years	39 of 100 (Notable)
18 August 1937	Uppsala_Aut, SE	daily high min	17.0 C (62.6 F)	1.1 C (2.0 F)	90 years	39 of 100 (Notable)
18 August 1937	Silchar, IN	daily rain	119.4 mm (4.7 in)	53.9 mm (2.1 in)	28 years	36 of 100 (Notable)
18 August 1937	Madison, US	daily rain	38.9 mm (1.5 in)	29.0 mm (1.1 in)	16 years	32 of 100 (Routine)
18 August 1937	Srimushnam, IN	monthly rain	91.4 mm (3.6 in)	15.2 mm (0.6 in)	26 years	30 of 100 (Routine)
18 August 1937	Storm Lake, US	daily rain	45.7 mm (1.8 in)	23.1 mm (0.9 in)	32 years	30 of 100 (Routine)
18 August 1937	Coronga Peak, AU	daily rain	25.4 mm (1.0 in)	13.2 mm (0.5 in)	31 years	28 of 100 (Routine)
18 August 1937	Menno, US	monthly rain	121.9 mm (4.8 in)	13.9 mm (0.5 in)	15 years	28 of 100 (Routine)
18 August 1937	Kaikalur, IN	daily rain	64.0 mm (2.5 in)	25.4 mm (1.0 in)	32 years	27 of 100 (Routine)
18 August 1937	Karimganj, IN	daily rain	135.1 mm (5.3 in)	55.1 mm (2.2 in)	4 years	27 of 100 (Routine)
18 August 1937	Vasteras-Hasslo, SE	daily high min	17.5 C (63.5 F)	1.5 C (2.7 F)	54 years	26 of 100 (Routine)
18 August 1937	Yarmouth, CA	daily high min	16.1 C (61.0 F)	0.5 C (0.9 F)	55 years	24 of 100 (Routine)
18 August 1937	Banpur, IN	daily rain	52.1 mm (2.1 in)	28.0 mm (1.1 in)	27 years	24 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 1937

Records set or tied on this calendar date in each year from 1797 to 1937. 1937 had 308 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 1937-08-18: 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	221
20 to 40	14
40 to 60	3
60 to 80	1
80 to 100	1