Weather Records on 11 August 1949

471 weather records were set or tied worldwide on 11 August 1949. Highest significance: Davenport L&D 15, US.

Key Facts for 11 August 1949

On 11 August 1949, 471 weather records were set or tied at long-record stations worldwide.
186 were record highs and 138 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 7 monthly and 462 daily.
Davenport L&D 15 set an all-time record daily precipitation of 166.9 mm (6.6 in) on 11 August 1949.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

471 stations

471 station records on 11 August 1949 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1949: highest significance records shown on the map
Station	Country	Type	Value	Significance
Davenport L&D 15	United States	Record daily precipitation	166.9 mm (6.6 in)	69 of 100 (Major)
Sheboygan	United States	Record daily precipitation	78.2 mm (3.1 in)	57 of 100 (Notable)
Eureka	United States	Record daily precipitation	51.1 mm (2.0 in)	55 of 100 (Notable)
Ongole	India	Record daily precipitation	69.1 mm (2.7 in)	52 of 100 (Notable)
Geneseo	United States	Record daily precipitation	112.5 mm (4.4 in)	49 of 100 (Notable)
Ottawa 4SW	United States	Record daily precipitation	79.8 mm (3.1 in)	48 of 100 (Notable)
Simcoe	Canada	Record daily precipitation	34.8 mm (1.4 in)	45 of 100 (Notable)
Plymouth Wwtp	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Montcornet	France	Record daily precipitation	29.6 mm (1.2 in)	40 of 100 (Notable)
Penn Yan	United States	Record daily precipitation	40.6 mm (1.6 in)	40 of 100 (Notable)
Maricopa 9 SSW	United States	Record low minimum temperature	13.3 C (55.9 F)	37 of 100 (Notable)
Khamaria	India	Record daily precipitation	76.2 mm (3.0 in)	36 of 100 (Notable)
Dunkeld	South Africa	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Muscatine 2	United States	Record daily precipitation	44.5 mm (1.8 in)	31 of 100 (Routine)
Grayling	United States	Record daily precipitation	39.6 mm (1.6 in)	31 of 100 (Routine)
Payson Rs	United States	Record low minimum temperature	6.1 C (43.0 F)	30 of 100 (Routine)
Clinton 2	United States	Record daily precipitation	76.2 mm (3.0 in)	30 of 100 (Routine)
Russell	Canada	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Atyrau	Kazakhstan	Record low maximum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Spur	United States	Record daily precipitation	42.4 mm (1.7 in)	29 of 100 (Routine)
Emerson	Canada	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Bapatla	India	Record daily precipitation	46.5 mm (1.8 in)	28 of 100 (Routine)
Sultan Bazar	India	Record daily precipitation	38.1 mm (1.5 in)	28 of 100 (Routine)
Centerville	United States	Record daily precipitation	55.6 mm (2.2 in)	28 of 100 (Routine)
Hart 3 WSW	United States	Record daily precipitation	53.3 mm (2.1 in)	28 of 100 (Routine)
Watertown Wwtp	United States	Record daily precipitation	44.2 mm (1.7 in)	28 of 100 (Routine)
Alice Springs Post Office	Australia	Record high minimum temperature	15.0 C (59.0 F)	27 of 100 (Routine)
Tada	India	Record daily precipitation	51.3 mm (2.0 in)	27 of 100 (Routine)
Litchfield Park	United States	Record low minimum temperature	14.4 C (57.9 F)	27 of 100 (Routine)
Tipton	United States	Record daily precipitation	125.7 mm (4.9 in)	27 of 100 (Routine)
Dubuque River	United States	Record daily precipitation	40.1 mm (1.6 in)	27 of 100 (Routine)
Washington	United States	Record high minimum temperature	24.4 C (75.9 F)	27 of 100 (Routine)
Rajapur	India	Record daily precipitation	115.1 mm (4.5 in)	26 of 100 (Routine)
Mantova	Italy	Record daily precipitation	36.1 mm (1.4 in)	26 of 100 (Routine)
Tempe 3 S	United States	Record low minimum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Atlantic City Marina	United States	Record high minimum temperature	25.0 C (77.0 F)	26 of 100 (Routine)
Haliburton A	Canada	Record high minimum temperature	19.4 C (66.9 F)	25 of 100 (Routine)
Husum	Germany	Record low minimum temperature	7.6 C (45.7 F)	25 of 100 (Routine)
Sacaton	United States	Record low minimum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Glens Falls Fire STN	United States	Record high maximum temperature	38.9 C (102.0 F)	25 of 100 (Routine)
Quatsino	Canada	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Perkins	Canada	Record daily precipitation	29.5 mm (1.2 in)	24 of 100 (Routine)
Ennore Obsy	India	Record daily precipitation	50.8 mm (2.0 in)	24 of 100 (Routine)
Florence	United States	Record low minimum temperature	14.4 C (57.9 F)	24 of 100 (Routine)
Kissimmee	United States	Record daily precipitation	48.5 mm (1.9 in)	24 of 100 (Routine)
Lamoni	United States	Record daily precipitation	66.3 mm (2.6 in)	24 of 100 (Routine)
Lake Cochituate	United States	Record high maximum temperature	37.2 C (99.0 F)	24 of 100 (Routine)
Boonton 1 SE	United States	Record high maximum temperature	36.7 C (98.1 F)	24 of 100 (Routine)
Paterson	United States	Record high maximum temperature	39.4 C (102.9 F)	24 of 100 (Routine)
Richland Ctr	United States	Record daily precipitation	40.9 mm (1.6 in)	24 of 100 (Routine)
Krishnapatnam	India	Record daily precipitation	35.6 mm (1.4 in)	23 of 100 (Routine)
Maunabo	Puerto Rico [United States]	Record daily precipitation	62.2 mm (2.4 in)	23 of 100 (Routine)
Bultfontein (Skl)	South Africa	Record daily precipitation	28.7 mm (1.1 in)	23 of 100 (Routine)
Ft Valley	United States	Record low minimum temperature	0.6 C (33.1 F)	23 of 100 (Routine)
Nogales	United States	Record low minimum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Orland	United States	Record low maximum temperature	27.2 C (81.0 F)	23 of 100 (Routine)
Warner Springs	United States	Record low minimum temperature	1.7 C (35.1 F)	23 of 100 (Routine)
Clinton #1	United States	Record daily precipitation	85.6 mm (3.4 in)	23 of 100 (Routine)
Seymour 1 NNW	United States	Record high minimum temperature	24.4 C (75.9 F)	23 of 100 (Routine)
Lock Haven	United States	Record high maximum temperature	38.9 C (102.0 F)	23 of 100 (Routine)

Counts by Type and Timescale

471 records

Records set or tied on 11 August 1949 by type: Highest daily maximum 108, Lowest daily maximum 71, Highest daily minimum 78, Lowest daily minimum 67, Heaviest daily rainfall 147.

Records on 11 August 1949 by type
Record type	Records
Highest daily maximum	108
Lowest daily maximum	71
Highest daily minimum	78
Lowest daily minimum	67
Heaviest daily rainfall	147
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 1949 by timescale: all-time 2, monthly 7, daily 462.

How Much Records Were Beaten By

352 broken records

Margins by which the 352 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 84.1. Ties are not counted.

Top 20 by Significance

11 August 1949

Top 20 records on 11 August 1949 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1949	Davenport L&D 15, US	all-time rain	166.9 mm (6.6 in)	54.4 mm (2.1 in)	19 years	69 of 100 (Major)
11 August 1949	Sheboygan, US	daily rain	78.2 mm (3.1 in)	61.2 mm (2.4 in)	40 years	57 of 100 (Notable)
11 August 1949	Eureka, US	daily rain	51.1 mm (2.0 in)	43.5 mm (1.7 in)	27 years	55 of 100 (Notable)
11 August 1949	Ongole, IN	daily rain	69.1 mm (2.7 in)	47.3 mm (1.9 in)	46 years	52 of 100 (Notable)
11 August 1949	Geneseo, US	daily rain	112.5 mm (4.4 in)	84.1 mm (3.3 in)	15 years	49 of 100 (Notable)
11 August 1949	Ottawa 4SW, US	daily rain	79.8 mm (3.1 in)	51.9 mm (2.0 in)	38 years	48 of 100 (Notable)
11 August 1949	Simcoe, CA	daily rain	34.8 mm (1.4 in)	15.7 mm (0.6 in)	76 years	45 of 100 (Notable)
11 August 1949	Plymouth Wwtp, US	daily rain	66.0 mm (2.6 in)	42.6 mm (1.7 in)	8 years	41 of 100 (Notable)
11 August 1949	Montcornet, FR	daily rain	29.6 mm (1.2 in)	22.9 mm (0.9 in)	14 years	40 of 100 (Notable)
11 August 1949	Penn Yan, US	daily rain	40.6 mm (1.6 in)	32.7 mm (1.3 in)	20 years	40 of 100 (Notable)
11 August 1949	Maricopa 9 SSW, US	daily low min	13.3 C (55.9 F)	6.7 C (12.1 F)	31 years	37 of 100 (Notable)
11 August 1949	Khamaria, IN	daily rain	76.2 mm (3.0 in)	41.7 mm (1.6 in)	42 years	36 of 100 (Notable)
11 August 1949	Dunkeld, ZA	daily rain	25.4 mm (1.0 in)	20.3 mm (0.8 in)	7 years	32 of 100 (Routine)
11 August 1949	Muscatine 2, US	daily rain	44.5 mm (1.8 in)	25.4 mm (1.0 in)	36 years	31 of 100 (Routine)
11 August 1949	Grayling, US	daily rain	39.6 mm (1.6 in)	18.0 mm (0.7 in)	31 years	31 of 100 (Routine)
11 August 1949	Payson Rs, US	daily low min	6.1 C (43.0 F)	5.0 C (9.0 F)	32 years	30 of 100 (Routine)
11 August 1949	Clinton 2, US	daily rain	76.2 mm (3.0 in)	37.6 mm (1.5 in)	15 years	30 of 100 (Routine)
11 August 1949	Russell, CA	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	64 years	29 of 100 (Routine)
11 August 1949	Atyrau, KZ	daily low max	23.9 C (75.0 F)	2.1 C (3.8 F)	62 years	29 of 100 (Routine)
11 August 1949	Spur, US	daily rain	42.4 mm (1.7 in)	25.9 mm (1.0 in)	28 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

1793 to 1949

Records set or tied on this calendar date in each year from 1793 to 1949. 1949 had 471 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 1949-08-11: 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	326
20 to 40	17
40 to 60	7
60 to 80	1
80 to 100	1