Weather Records on 11 August 1947

709 weather records were set or tied worldwide on 11 August 1947. Highest significance: Napoleon, US.

Key Facts for 11 August 1947

On 11 August 1947, 709 weather records were set or tied at long-record stations worldwide.
292 were record highs and 81 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 12 monthly and 694 daily.
Napoleon set a daily record precipitation of 48.8 mm (1.9 in) on 11 August 1947.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

709 stations

709 station records on 11 August 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Napoleon	United States	Record daily precipitation	48.8 mm (1.9 in)	49 of 100 (Notable)
Malsiras	India	Record daily precipitation	54.9 mm (2.2 in)	48 of 100 (Notable)
Bool Lagoon	Australia	Record daily precipitation	34.8 mm (1.4 in)	46 of 100 (Notable)
Hubli	India	Record daily precipitation	69.9 mm (2.8 in)	46 of 100 (Notable)
Dahiwadi	India	Record daily precipitation	63.8 mm (2.5 in)	46 of 100 (Notable)
Thylungra Station	Australia	Record daily precipitation	30.5 mm (1.2 in)	43 of 100 (Notable)
Milroy	Australia	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Grenora	United States	Record daily precipitation	36.1 mm (1.4 in)	42 of 100 (Notable)
Marmarth	United States	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Phaltan	India	Record daily precipitation	35.8 mm (1.4 in)	39 of 100 (Notable)
Pimpalgaon	India	Record daily precipitation	60.2 mm (2.4 in)	38 of 100 (Notable)
Bomalli	Australia	Record daily precipitation	30.0 mm (1.2 in)	37 of 100 (Notable)
Bourke Post Office	Australia	Record daily precipitation	32.3 mm (1.3 in)	37 of 100 (Notable)
Kalna	India	Record daily precipitation	82.6 mm (3.3 in)	35 of 100 (Notable)
Kisinev	Moldova	Record daily precipitation	25.6 mm (1.0 in)	35 of 100 (Notable)
Milly Milly	Australia	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
Temple	United States	Record high maximum temperature	44.4 C (111.9 F)	34 of 100 (Routine)
Amby	Australia	Record daily precipitation	35.3 mm (1.4 in)	33 of 100 (Routine)
Pine Rvr Dam	United States	Record high minimum temperature	23.9 C (75.0 F)	33 of 100 (Routine)
Peak Hill (Bruie Plains)	Australia	Record daily precipitation	30.7 mm (1.2 in)	32 of 100 (Routine)
Hallock	United States	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Cooperstown	United States	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Mitchell Post Office	Australia	Record daily precipitation	35.1 mm (1.4 in)	31 of 100 (Routine)
Elliott Research Station	Australia	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Latrobe (Coal Road)	Australia	Record daily precipitation	33.3 mm (1.3 in)	31 of 100 (Routine)
Mahim	India	Record daily precipitation	106.2 mm (4.2 in)	31 of 100 (Routine)
Talwood State School	Australia	Record daily precipitation	33.0 mm (1.3 in)	30 of 100 (Routine)
Angledool (Angledool Station)	Australia	Record daily precipitation	29.7 mm (1.2 in)	30 of 100 (Routine)
Gudur(Guduru)	India	Record daily precipitation	67.3 mm (2.6 in)	30 of 100 (Routine)
Boko	India	Record daily precipitation	170.2 mm (6.7 in)	30 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record high minimum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
Little Falls 2NNE	United States	Record high minimum temperature	25.0 C (77.0 F)	30 of 100 (Routine)
Biloxi	United States	Record daily precipitation	58.2 mm (2.3 in)	30 of 100 (Routine)
Bhadgaon	India	Record daily precipitation	55.6 mm (2.2 in)	29 of 100 (Routine)
Larimore 4SW	United States	Record daily precipitation	31.2 mm (1.2 in)	29 of 100 (Routine)
Butte Bert Mooney AP	United States	Record low minimum temperature	0.6 C (33.1 F)	29 of 100 (Routine)
Muckadilla Post Office	Australia	Record daily precipitation	26.7 mm (1.1 in)	28 of 100 (Routine)
Lightning Ridge Post Office	Australia	Record daily precipitation	30.2 mm (1.2 in)	28 of 100 (Routine)
Northdown (Hamley)	Australia	Record daily precipitation	38.1 mm (1.5 in)	28 of 100 (Routine)
Sandy Lake Dam Libby	United States	Record high minimum temperature	22.8 C (73.0 F)	28 of 100 (Routine)
Leakesville 6 WSW	United States	Record low maximum temperature	27.2 C (81.0 F)	28 of 100 (Routine)
Park Rapids Muni AP	United States	Record high minimum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Mungallala	Australia	Record daily precipitation	37.1 mm (1.5 in)	27 of 100 (Routine)
Harihar	India	Record daily precipitation	38.1 mm (1.5 in)	27 of 100 (Routine)
Cheboygan	United States	Record high maximum temperature	36.1 C (97.0 F)	27 of 100 (Routine)
Maple Plain	United States	Record high minimum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Santa Fe	United States	Record high maximum temperature	33.3 C (91.9 F)	27 of 100 (Routine)
Boomi (Barwon St)	Australia	Record daily precipitation	31.8 mm (1.3 in)	26 of 100 (Routine)
Umbergaon	India	Record daily precipitation	51.6 mm (2.0 in)	26 of 100 (Routine)
Turaiyur	India	Record daily precipitation	65.0 mm (2.6 in)	26 of 100 (Routine)
Tortosa - Observatorio del Ebr	Spain	Record low maximum temperature	26.5 C (79.7 F)	26 of 100 (Routine)
St George Post Office	Australia	Record daily precipitation	38.9 mm (1.5 in)	25 of 100 (Routine)
Combogolong	Australia	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Nordby (Fano)	Denmark	Record high maximum temperature	30.0 C (86.0 F)	25 of 100 (Routine)
Campbell	United States	Record high maximum temperature	38.3 C (100.9 F)	25 of 100 (Routine)
Kalgoorlie Post Office	Australia	Record low minimum temperature	0.0 C (32.0 F)	24 of 100 (Routine)
Totara	Australia	Record daily precipitation	35.1 mm (1.4 in)	24 of 100 (Routine)
Bungunya School	Australia	Record daily precipitation	25.9 mm (1.0 in)	24 of 100 (Routine)
Hebel Store	Australia	Record daily precipitation	26.7 mm (1.1 in)	24 of 100 (Routine)
Paravur	India	Record daily precipitation	49.5 mm (1.9 in)	24 of 100 (Routine)

Counts by Type and Timescale

709 records

Records set or tied on 11 August 1947 by type: Highest daily maximum 148, Lowest daily maximum 23, Highest daily minimum 144, Lowest daily minimum 58, Heaviest daily rainfall 336.

Records on 11 August 1947 by type
Record type	Records
Highest daily maximum	148
Lowest daily maximum	23
Highest daily minimum	144
Lowest daily minimum	58
Heaviest daily rainfall	336
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 1947 by timescale: all-time 3, monthly 12, daily 694.

How Much Records Were Beaten By

581 broken records

Margins by which the 581 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 63.0. Ties are not counted.

Top 20 by Significance

11 August 1947

Top 20 records on 11 August 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1947	Napoleon, US	daily rain	48.8 mm (1.9 in)	39.7 mm (1.6 in)	32 years	49 of 100 (Notable)
11 August 1947	Malsiras, IN	daily rain	54.9 mm (2.2 in)	39.9 mm (1.6 in)	45 years	48 of 100 (Notable)
11 August 1947	Bool Lagoon, AU	monthly rain	34.8 mm (1.4 in)	9.9 mm (0.39 in)	37 years	46 of 100 (Notable)
11 August 1947	Hubli, IN	daily rain	69.9 mm (2.8 in)	54.2 mm (2.1 in)	8 years	46 of 100 (Notable)
11 August 1947	Dahiwadi, IN	daily rain	63.8 mm (2.5 in)	57.7 mm (2.3 in)	6 years	46 of 100 (Notable)
11 August 1947	Thylungra Station, AU	daily rain	30.5 mm (1.2 in)	29.2 mm (1.1 in)	25 years	43 of 100 (Notable)
11 August 1947	Milroy, AU	daily rain	27.4 mm (1.1 in)	22.3 mm (0.9 in)	55 years	42 of 100 (Notable)
11 August 1947	Grenora, US	daily rain	36.1 mm (1.4 in)	32.3 mm (1.3 in)	12 years	42 of 100 (Notable)
11 August 1947	Marmarth, US	daily rain	29.2 mm (1.1 in)	25.6 mm (1.0 in)	29 years	42 of 100 (Notable)
11 August 1947	Phaltan, IN	daily rain	35.8 mm (1.4 in)	28.2 mm (1.1 in)	44 years	39 of 100 (Notable)
11 August 1947	Pimpalgaon, IN	daily rain	60.2 mm (2.4 in)	31.5 mm (1.2 in)	20 years	38 of 100 (Notable)
11 August 1947	Bomalli, AU	daily rain	30.0 mm (1.2 in)	27.2 mm (1.1 in)	8 years	37 of 100 (Notable)
11 August 1947	Bourke Post Office, AU	daily rain	32.3 mm (1.3 in)	15.3 mm (0.6 in)	37 years	37 of 100 (Notable)
11 August 1947	Kalna, IN	daily rain	82.6 mm (3.3 in)	33.1 mm (1.3 in)	44 years	35 of 100 (Notable)
11 August 1947	Kisinev, MD	daily rain	25.6 mm (1.0 in)	14.1 mm (0.6 in)	50 years	35 of 100 (Notable)
11 August 1947	Milly Milly, AU	daily rain	33.0 mm (1.3 in)	20.3 mm (0.8 in)	17 years	34 of 100 (Routine)
11 August 1947	Temple, US	all-time high max	44.4 C (111.9 F)	0.5 C (0.9 F)	29 years	34 of 100 (Routine)
11 August 1947	Amby, AU	daily rain	35.3 mm (1.4 in)	24.4 mm (1.0 in)	4 years	33 of 100 (Routine)
11 August 1947	Pine Rvr Dam, US	daily high min	23.9 C (75.0 F)	6.1 C (11.0 F)	46 years	33 of 100 (Routine)
11 August 1947	Peak Hill (Bruie Plains), AU	daily rain	30.7 mm (1.2 in)	8.3 mm (0.33 in)	55 years	32 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 1947

Records set or tied on this calendar date in each year from 1793 to 1947. 1947 had 709 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 1947-08-11: 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 10	481
10 to 20	63
20 to 30	24
30 to 40	10
40 to 50	0
50 to 60	2
60 to 70	1