Weather Records on 11 August 2021

834 weather records were set or tied worldwide on 11 August 2021. Highest significance: Lankaran, AZ.

Key Facts for 11 August 2021

On 11 August 2021, 834 weather records were set or tied at long-record stations worldwide.
677 were record highs and 59 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 21 monthly and 809 daily.
Lankaran set a daily record precipitation of 99.1 mm (3.9 in) on 11 August 2021.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 458 records.

Record Map

834 stations

834 station records on 11 August 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lankaran	Azerbaijan	Record daily precipitation	99.1 mm (3.9 in)	63 of 100 (Major)
Sinop	Turkey	Record daily precipitation	83.8 mm (3.3 in)	63 of 100 (Major)
Lupton 1S	United States	Record daily precipitation	109.2 mm (4.3 in)	57 of 100 (Notable)
Akune	Japan	Record daily precipitation	134.9 mm (5.3 in)	53 of 100 (Notable)
Niamey Aero	Niger	Record daily precipitation	74.9 mm (2.9 in)	50 of 100 (Notable)
Kystovka	Russia	Record daily precipitation	37.1 mm (1.5 in)	50 of 100 (Notable)
Gaylord	United States	Record daily precipitation	38.4 mm (1.5 in)	49 of 100 (Notable)
Osceola	United States	Record high minimum temperature	25.6 C (78.1 F)	46 of 100 (Notable)
Saga	Japan	Record daily precipitation	113.0 mm (4.4 in)	45 of 100 (Notable)
Oskaloosa	United States	Record high minimum temperature	25.0 C (77.0 F)	45 of 100 (Notable)
Tizi Ouzou	Algeria	Record high maximum temperature	46.7 C (116.1 F)	44 of 100 (Notable)
Rushville	United States	Record high minimum temperature	23.3 C (73.9 F)	44 of 100 (Notable)
Ft Madison	United States	Record daily precipitation	56.1 mm (2.2 in)	44 of 100 (Notable)
Benghazi Benina	Libya	Record high maximum temperature	39.8 C (103.6 F)	43 of 100 (Notable)
Severnoe	Russia	Record daily precipitation	39.9 mm (1.6 in)	43 of 100 (Notable)
Allerton	United States	Record high minimum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Jackson Reynolds Fld	United States	Record daily precipitation	77.2 mm (3.0 in)	43 of 100 (Notable)
Marion 2 N	United States	Record high minimum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Hanover	United States	Record high minimum temperature	22.8 C (73.0 F)	42 of 100 (Notable)
Angelica	United States	Record high minimum temperature	21.1 C (70.0 F)	42 of 100 (Notable)
Saltville 1N	United States	Record daily precipitation	41.9 mm (1.6 in)	42 of 100 (Notable)
Colfax	United States	Record high minimum temperature	24.4 C (75.9 F)	41 of 100 (Notable)
Jacksonville 2E	United States	Record high minimum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Farmland 5 NNW	United States	Record high minimum temperature	23.3 C (73.9 F)	41 of 100 (Notable)
Toledo 3N	United States	Record daily precipitation	39.9 mm (1.6 in)	41 of 100 (Notable)
Yates Ctr	United States	Record high minimum temperature	24.4 C (75.9 F)	41 of 100 (Notable)
Bolivar 1 NE	United States	Record high minimum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Alfred	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Wausau ASOS	United States	Record daily precipitation	67.1 mm (2.6 in)	41 of 100 (Notable)
Tizi Ouzou	Algeria	Record high minimum temperature	25.5 C (77.9 F)	39 of 100 (Notable)
Kairouan	Tunisia	Record high minimum temperature	31.6 C (88.9 F)	39 of 100 (Notable)
Hitoyoshi	Japan	Record daily precipitation	78.0 mm (3.1 in)	38 of 100 (Notable)
Ushibuka	Japan	Record daily precipitation	121.9 mm (4.8 in)	38 of 100 (Notable)
Lajas Substn	Puerto Rico [United States]	Record high maximum temperature	37.2 C (99.0 F)	38 of 100 (Notable)
Baker Butte	United States	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Skikda	Algeria	Record high maximum temperature	40.3 C (104.5 F)	37 of 100 (Notable)
Huoshan	China	Record daily precipitation	73.4 mm (2.9 in)	37 of 100 (Notable)
Neosho	United States	Record high minimum temperature	27.2 C (81.0 F)	37 of 100 (Notable)
Poplar Bluff	United States	Record high minimum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Delhi 2 SE	United States	Record high minimum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Kumamoto	Japan	Record daily precipitation	152.9 mm (6.0 in)	36 of 100 (Notable)
Hampton	United States	Record high minimum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Mt Ayr	United States	Record high minimum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Northport 2W	United States	Record daily precipitation	39.6 mm (1.6 in)	36 of 100 (Notable)
Glens Falls AP	United States	Record high minimum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Springfield Abraham Lincoln Ca	United States	Record high minimum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Lebanon Muni AP	United States	Record high minimum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Messina	Italy	Record high maximum temperature	37.4 C (99.3 F)	35 of 100 (Notable)
Iskenderun	Turkey	Record high maximum temperature	36.5 C (97.7 F)	35 of 100 (Notable)
Carroll	United States	Record high minimum temperature	23.9 C (75.0 F)	35 of 100 (Notable)
Marshalltown	United States	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Osage	United States	Record high minimum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Albany	United States	Record high minimum temperature	26.1 C (79.0 F)	35 of 100 (Notable)
Bowling Green Wwtp	United States	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Aledo	United States	Record high minimum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Concordia ASOS	United States	Record high minimum temperature	25.0 C (77.0 F)	34 of 100 (Routine)
Amarillo	United States	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Rudnaja Pristan	Russia	Record low minimum temperature	8.4 C (47.1 F)	33 of 100 (Routine)
Esengyly	Turkmenistan	Record high maximum temperature	42.4 C (108.3 F)	33 of 100 (Routine)
Keokuk L&D 19	United States	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

834 records

Records set or tied on 11 August 2021 by type: Highest daily maximum 219, Lowest daily maximum 25, Highest daily minimum 458, Lowest daily minimum 34, Heaviest daily rainfall 98.

Records on 11 August 2021 by type
Record type	Records
Highest daily maximum	219
Lowest daily maximum	25
Highest daily minimum	458
Lowest daily minimum	34
Heaviest daily rainfall	98
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 2021 by timescale: all-time 4, monthly 21, daily 809.

How Much Records Were Beaten By

601 broken records

Margins by which the 601 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 81.3. Ties are not counted.

Top 20 by Significance

11 August 2021

Top 20 records on 11 August 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 2021	Lankaran, AZ	daily rain	99.1 mm (3.9 in)	81.3 mm (3.2 in)	44 years	63 of 100 (Major)
11 August 2021	Sinop, TR	daily rain	83.8 mm (3.3 in)	74.9 mm (2.9 in)	58 years	63 of 100 (Major)
11 August 2021	Lupton 1S, US	monthly rain	109.2 mm (4.3 in)	29.2 mm (1.1 in)	42 years	57 of 100 (Notable)
11 August 2021	Akune, JP	daily rain	134.9 mm (5.3 in)	79.9 mm (3.1 in)	62 years	53 of 100 (Notable)
11 August 2021	Niamey Aero, NE	daily rain	74.9 mm (2.9 in)	33.4 mm (1.3 in)	75 years	50 of 100 (Notable)
11 August 2021	Kystovka, RU	daily rain	37.1 mm (1.5 in)	20.7 mm (0.8 in)	30 years	50 of 100 (Notable)
11 August 2021	Gaylord, US	daily rain	38.4 mm (1.5 in)	10.7 mm (0.4 in)	100 years	49 of 100 (Notable)
11 August 2021	Osceola, US	daily high min	25.6 C (78.1 F)	2.3 C (4.1 F)	124 years	46 of 100 (Notable)
11 August 2021	Saga, JP	daily rain	113.0 mm (4.4 in)	70.5 mm (2.8 in)	40 years	45 of 100 (Notable)
11 August 2021	Oskaloosa, US	daily high min	25.0 C (77.0 F)	2.2 C (4.0 F)	103 years	45 of 100 (Notable)
11 August 2021	Tizi Ouzou, DZ	daily high max	46.7 C (116.1 F)	1.7 C (3.1 F)	116 years	44 of 100 (Notable)
11 August 2021	Rushville, US	daily high min	23.3 C (73.9 F)	1.6 C (2.9 F)	103 years	44 of 100 (Notable)
11 August 2021	Ft Madison, US	daily rain	56.1 mm (2.2 in)	28.9 mm (1.1 in)	59 years	44 of 100 (Notable)
11 August 2021	Benghazi Benina, LY	daily high max	39.8 C (103.6 F)	3.7 C (6.7 F)	76 years	43 of 100 (Notable)
11 August 2021	Severnoe, RU	daily rain	39.9 mm (1.6 in)	19.4 mm (0.8 in)	19 years	43 of 100 (Notable)
11 August 2021	Allerton, US	daily high min	23.3 C (73.9 F)	1.1 C (2.0 F)	114 years	43 of 100 (Notable)
11 August 2021	Jackson Reynolds Fld, US	daily rain	77.2 mm (3.0 in)	33.0 mm (1.3 in)	27 years	43 of 100 (Notable)
11 August 2021	Marion 2 N, US	daily high min	23.3 C (73.9 F)	1.1 C (2.0 F)	125 years	42 of 100 (Notable)
11 August 2021	Hanover, US	daily high min	22.8 C (73.0 F)	1.1 C (2.0 F)	107 years	42 of 100 (Notable)
11 August 2021	Angelica, US	daily high min	21.1 C (70.0 F)	1.1 C (2.0 F)	116 years	42 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

1793 to 2021

Records set or tied on this calendar date in each year from 1793 to 2021. 2021 had 834 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 2021-08-11: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	581
20 to 40	14
40 to 60	1
60 to 80	4
80 to 100	1