Weather Records on 11 August 1940

359 weather records were set or tied worldwide on 11 August 1940. Highest significance: Pinopolis, US.

Key Facts for 11 August 1940

On 11 August 1940, 359 weather records were set or tied at long-record stations worldwide.
187 were record highs and 44 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 9 monthly and 348 daily.
Pinopolis set a daily record precipitation of 127.0 mm (5.0 in) on 11 August 1940.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

359 stations

359 station records on 11 August 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pinopolis	United States	Record daily precipitation	127.0 mm (5.0 in)	54 of 100 (Notable)
Papaikou 144.1	United States	Record daily precipitation	170.2 mm (6.7 in)	49 of 100 (Notable)
Red Hill	Australia	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Attarikhat	India	Record daily precipitation	125.2 mm (4.9 in)	40 of 100 (Notable)
Umerkhed	India	Record daily precipitation	76.7 mm (3.0 in)	39 of 100 (Notable)
Umea	Sweden	Record daily precipitation	31.0 mm (1.2 in)	39 of 100 (Notable)
Hakalau 142	United States	Record daily precipitation	104.1 mm (4.1 in)	38 of 100 (Notable)
Dwtn Charleston	United States	Record daily precipitation	194.6 mm (7.7 in)	38 of 100 (Notable)
Beaufort Wwtp	United States	Record daily precipitation	275.3 mm (10.8 in)	36 of 100 (Notable)
Afton	United States	Record daily precipitation	72.4 mm (2.9 in)	34 of 100 (Routine)
Carlsbad	United States	Record low maximum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Mayaguez City	Puerto Rico [United States]	Record low minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record daily precipitation	29.4 mm (1.2 in)	31 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record high maximum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Mardie	Australia	Record daily precipitation	26.2 mm (1.0 in)	29 of 100 (Routine)
Goderich	Canada	Record high maximum temperature	30.6 C (87.1 F)	29 of 100 (Routine)
Ft Smith	United States	Record daily precipitation	48.5 mm (1.9 in)	29 of 100 (Routine)
Boone	United States	Record daily precipitation	56.1 mm (2.2 in)	29 of 100 (Routine)
Marble Bar Comparison	Australia	Record low maximum temperature	17.8 C (64.0 F)	28 of 100 (Routine)
Pembroke Eddy Match	Canada	Record high maximum temperature	31.7 C (89.1 F)	28 of 100 (Routine)
Duck Hill	United States	Record daily precipitation	63.0 mm (2.5 in)	28 of 100 (Routine)
Buffalo	United States	Record high maximum temperature	31.7 C (89.1 F)	28 of 100 (Routine)
Evanston 1 E	United States	Record high maximum temperature	32.8 C (91.0 F)	28 of 100 (Routine)
Karwar	India	Record daily precipitation	140.5 mm (5.5 in)	27 of 100 (Routine)
Mirajgaon	India	Record daily precipitation	35.6 mm (1.4 in)	27 of 100 (Routine)
Waukee	United States	Record daily precipitation	62.2 mm (2.4 in)	27 of 100 (Routine)
Beowawe	United States	Record high maximum temperature	42.2 C (108.0 F)	27 of 100 (Routine)
Muktesar	India	Record daily precipitation	53.1 mm (2.1 in)	26 of 100 (Routine)
Glennville 3NW	United States	Record daily precipitation	71.1 mm (2.8 in)	25 of 100 (Routine)
Shahpur	India	Record daily precipitation	61.0 mm (2.4 in)	24 of 100 (Routine)
Bhir	India	Record daily precipitation	31.0 mm (1.2 in)	24 of 100 (Routine)
Hypoluxo	United States	Record high maximum temperature	36.1 C (97.0 F)	24 of 100 (Routine)
Boonville	United States	Record daily precipitation	66.0 mm (2.6 in)	24 of 100 (Routine)
Henderson	United States	Record daily precipitation	39.1 mm (1.5 in)	24 of 100 (Routine)
Creston 2 SW	United States	Record daily precipitation	49.5 mm (1.9 in)	23 of 100 (Routine)
Jamestown	United States	Record high maximum temperature	35.0 C (95.0 F)	23 of 100 (Routine)
Escanaba	United States	Record high minimum temperature	21.1 C (70.0 F)	23 of 100 (Routine)
Myklebust I Breim	Norway	Record daily precipitation	34.0 mm (1.3 in)	22 of 100 (Routine)
Gravette	United States	Record low maximum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Haina 214	United States	Record daily precipitation	52.6 mm (2.1 in)	22 of 100 (Routine)
Parrsboro	Canada	Record low minimum temperature	2.2 C (36.0 F)	21 of 100 (Routine)
Mahad	India	Record daily precipitation	100.8 mm (4.0 in)	21 of 100 (Routine)
Thakurdwara	India	Record daily precipitation	144.8 mm (5.7 in)	21 of 100 (Routine)
Greenfield	United States	Record daily precipitation	48.0 mm (1.9 in)	21 of 100 (Routine)
Walnut 4S	United States	Record daily precipitation	64.3 mm (2.5 in)	21 of 100 (Routine)
Newberry-Luce Co Rd Commission	United States	Record high minimum temperature	19.4 C (66.9 F)	21 of 100 (Routine)
San Jacinto	United States	Record high maximum temperature	38.9 C (102.0 F)	21 of 100 (Routine)
Grenora	United States	Record high minimum temperature	20.0 C (68.0 F)	21 of 100 (Routine)
Muskegon Co AP	United States	Record high maximum temperature	32.2 C (90.0 F)	21 of 100 (Routine)
Pembina	United States	Record high minimum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Elko Rgnl AP	United States	Record high maximum temperature	39.4 C (102.9 F)	21 of 100 (Routine)
Nanutarra	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Millstream	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Boodarie	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Vastervik	Sweden	Record daily precipitation	22.5 mm (0.9 in)	20 of 100 (Routine)
Gavle	Sweden	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Wiluna	Australia	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Peedamullah	Australia	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record daily precipitation	21.0 mm (0.8 in)	20 of 100 (Routine)
Roebourne	Australia	Record daily precipitation	9.9 mm (0.39 in)	20 of 100 (Routine)

Counts by Type and Timescale

359 records

Records set or tied on 11 August 1940 by type: Highest daily maximum 126, Lowest daily maximum 19, Highest daily minimum 61, Lowest daily minimum 25, Heaviest daily rainfall 128.

Records on 11 August 1940 by type
Record type	Records
Highest daily maximum	126
Lowest daily maximum	19
Highest daily minimum	61
Lowest daily minimum	25
Heaviest daily rainfall	128
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 1940 by timescale: all-time 2, monthly 9, daily 348.

How Much Records Were Beaten By

268 broken records

Margins by which the 268 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 90.2. Ties are not counted.

Top 20 by Significance

11 August 1940

Top 20 records on 11 August 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1940	Pinopolis, US	daily rain	127.0 mm (5.0 in)	74.4 mm (2.9 in)	43 years	54 of 100 (Notable)
11 August 1940	Papaikou 144.1, US	daily rain	170.2 mm (6.7 in)	90.2 mm (3.6 in)	26 years	49 of 100 (Notable)
11 August 1940	Red Hill, AU	daily rain	25.4 mm (1.0 in)	25.4 mm (1.0 in)	40 years	41 of 100 (Notable)
11 August 1940	Attarikhat, IN	daily rain	125.2 mm (4.9 in)	60.9 mm (2.4 in)	37 years	40 of 100 (Notable)
11 August 1940	Umerkhed, IN	daily rain	76.7 mm (3.0 in)	47.2 mm (1.9 in)	17 years	39 of 100 (Notable)
11 August 1940	Umea, SE	daily rain	31.0 mm (1.2 in)	11.7 mm (0.5 in)	53 years	39 of 100 (Notable)
11 August 1940	Hakalau 142, US	daily rain	104.1 mm (4.1 in)	60.9 mm (2.4 in)	26 years	38 of 100 (Notable)
11 August 1940	Dwtn Charleston, US	monthly rain	194.6 mm (7.7 in)	40.2 mm (1.6 in)	4 years	38 of 100 (Notable)
11 August 1940	Beaufort Wwtp, US	all-time rain	275.3 mm (10.8 in)	0.5 mm (0.02 in)	41 years	36 of 100 (Notable)
11 August 1940	Afton, US	daily rain	72.4 mm (2.9 in)	42.4 mm (1.7 in)	27 years	34 of 100 (Routine)
11 August 1940	Carlsbad, US	daily low max	23.3 C (73.9 F)	7.3 C (13.1 F)	20 years	34 of 100 (Routine)
11 August 1940	Mayaguez City, PR	daily low min	15.0 C (59.0 F)	3.3 C (5.9 F)	20 years	33 of 100 (Routine)
11 August 1940	Vasteras-Hasslo, SE	daily rain	29.4 mm (1.2 in)	10.0 mm (0.4 in)	28 years	31 of 100 (Routine)
11 August 1940	Hobart (Ellerslie Road), AU	daily high max	20.0 C (68.0 F)	2.2 C (4.0 F)	56 years	30 of 100 (Routine)
11 August 1940	Mardie, AU	daily rain	26.2 mm (1.0 in)	24.2 mm (1.0 in)	1 year	29 of 100 (Routine)
11 August 1940	Goderich, CA	daily high max	30.6 C (87.1 F)	1.2 C (2.2 F)	63 years	29 of 100 (Routine)
11 August 1940	Ft Smith, US	daily rain	48.5 mm (1.9 in)	26.7 mm (1.1 in)	26 years	29 of 100 (Routine)
11 August 1940	Boone, US	daily rain	56.1 mm (2.2 in)	26.1 mm (1.0 in)	27 years	29 of 100 (Routine)
11 August 1940	Marble Bar Comparison, AU	daily low max	17.8 C (64.0 F)	5.0 C (9.0 F)	31 years	28 of 100 (Routine)
11 August 1940	Pembroke Eddy Match, CA	daily high max	31.7 C (89.1 F)	0.6 C (1.1 F)	69 years	28 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

1793 to 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 359 records.

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

Records on 08-11 in each year
Year	Records
1793	1
1796	1
1811	1
1815	2
1838	1
1839	1
1841	1
1851	1
1855	1
1858	1
1861	2
1862	1
1863	1
1864	6
1865	1
1866	6
1869	4
1871	1
1875	1
1879	2
1881	1
1883	1
1885	1
1888	1
1889	4
1890	4
1891	1
1892	4
1893	1
1894	1
1895	2
1896	5
1897	3
1898	2
1899	3
1900	4
1901	4
1902	13
1903	12
1904	19
1905	9
1906	6
1907	8
1908	10
1909	41
1910	9
1911	24
1912	46
1913	43
1914	26
1915	27
1916	64
1917	217
1918	29
1919	18
1920	54
1921	201
1922	98
1923	80
1924	149
1925	219
1926	140
1927	190
1928	174
1929	354
1930	471
1931	453
1932	281
1933	416
1934	620
1935	499
1936	541
1937	356
1938	315
1939	389
1940	359
1941	807
1942	390
1943	345
1944	936
1945	401
1946	419
1947	709
1948	306
1949	471
1950	320
1951	296
1952	417
1953	283
1954	536
1955	319
1956	457
1957	305
1958	494
1959	337
1960	461
1961	429
1962	662
1963	493
1964	677
1965	793
1966	1,037
1967	1,071
1968	619
1969	533
1970	526
1971	711
1972	823
1973	451
1974	596
1975	753
1976	529
1977	845
1978	433
1979	797
1980	929
1981	645
1982	1,232
1983	1,095
1984	822
1985	804
1986	563
1987	885
1988	1,119
1989	983
1990	760
1991	822
1992	928
1993	840
1994	1,173
1995	1,324
1996	1,147
1997	1,512
1998	1,232
1999	1,152
2000	924
2001	811
2002	1,152
2003	1,601
2004	1,478
2005	1,031
2006	896
2007	1,428
2008	945
2009	836
2010	2,289
2011	1,106
2012	953
2013	470
2014	556
2015	696
2016	1,340
2017	619
2018	861
2019	758
2020	688
2021	834
2022	661
2023	757
2024	643
2025	722
2026	765

Download the Data

Data for records on 1940-08-11: 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	237
20 to 40	22
40 to 60	5
60 to 80	3
80 to 100	1