Weather Records on 21 August 2012

990 weather records were set or tied worldwide on 21 August 2012. Highest significance: Kazan, RU.

Key Facts for 21 August 2012

On 21 August 2012, 990 weather records were set or tied at long-record stations worldwide.
565 were record highs and 301 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 14 monthly and 971 daily.
Kazan set a daily record precipitation of 39.2 mm (1.5 in) on 21 August 2012.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 447 records.

Record Map

990 stations

990 station records on 21 August 2012 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 2012: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kazan	Russia	Record daily precipitation	39.2 mm (1.5 in)	71 of 100 (Major)
Lerwick	United Kingdom	Record daily precipitation	64.2 mm (2.5 in)	54 of 100 (Notable)
Hefei	China	Record daily precipitation	120.4 mm (4.7 in)	51 of 100 (Notable)
Astara	Azerbaijan	Record daily precipitation	102.1 mm (4.0 in)	47 of 100 (Notable)
Monte Vista 2W	United States	Record low maximum temperature	16.7 C (62.1 F)	46 of 100 (Notable)
Sanalona II	Mexico	Record daily precipitation	98.0 mm (3.9 in)	45 of 100 (Notable)
Lichtentanne	Germany	Record high maximum temperature	31.7 C (89.1 F)	44 of 100 (Notable)
Phuket	Thailand	Record daily precipitation	103.9 mm (4.1 in)	44 of 100 (Notable)
Berlin-Tegel	Germany	Record daily precipitation	39.1 mm (1.5 in)	43 of 100 (Notable)
Ward Mountain	United States	Record daily precipitation	27.9 mm (1.1 in)	43 of 100 (Notable)
Nurnberg	Germany	Record high minimum temperature	18.4 C (65.1 F)	42 of 100 (Notable)
Mojave	United States	Record high minimum temperature	26.7 C (80.1 F)	42 of 100 (Notable)
Jena Sternwarte	Germany	Record high minimum temperature	18.7 C (65.7 F)	41 of 100 (Notable)
Freiburg	Germany	Record high maximum temperature	33.2 C (91.8 F)	41 of 100 (Notable)
Huajimic	Mexico	Record daily precipitation	105.7 mm (4.2 in)	41 of 100 (Notable)
Tecuala	Mexico	Record low maximum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Red Cloud	United States	Record low minimum temperature	6.7 C (44.1 F)	41 of 100 (Notable)
Callao	United States	Record high maximum temperature	36.1 C (97.0 F)	41 of 100 (Notable)
Kjahta	Russia	Record low minimum temperature	0.8 C (33.4 F)	40 of 100 (Notable)
Independence	United States	Record high minimum temperature	23.9 C (75.0 F)	40 of 100 (Notable)
Chilo Meldahl Locks & Dam	United States	Record low maximum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Sumter	United States	Record daily precipitation	44.7 mm (1.8 in)	40 of 100 (Notable)
Tashkent	Uzbekistan	Record high minimum temperature	22.3 C (72.1 F)	40 of 100 (Notable)
Cottbus	Germany	Record high minimum temperature	20.8 C (69.4 F)	39 of 100 (Notable)
Fairhope 2 NE	United States	Record low maximum temperature	28.3 C (82.9 F)	39 of 100 (Notable)
Cairo 1SW	United States	Record low maximum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
San Pedro	Mexico	Record high minimum temperature	27.8 C (82.0 F)	38 of 100 (Notable)
San Anton	Mexico	Record daily precipitation	49.3 mm (1.9 in)	38 of 100 (Notable)
Lainio	Sweden	Record low minimum temperature	-3.9 C (25.0 F)	38 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low minimum temperature	19.4 C (66.9 F)	37 of 100 (Notable)
Venice	United States	Record daily precipitation	78.7 mm (3.1 in)	37 of 100 (Notable)
Paso de Los Toros	Uruguay	Record daily precipitation	96.0 mm (3.8 in)	37 of 100 (Notable)
Amberg-Unterammersricht	Germany	Record high minimum temperature	19.6 C (67.3 F)	36 of 100 (Notable)
San Luis de la Paz	Mexico	Record low minimum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
Capitan	United States	Record daily precipitation	32.3 mm (1.3 in)	36 of 100 (Notable)
McColl 3 NNW	United States	Record daily precipitation	38.4 mm (1.5 in)	36 of 100 (Notable)
Tamdy	Uzbekistan	Record high maximum temperature	43.6 C (110.5 F)	36 of 100 (Notable)
Berge	Germany	Record daily precipitation	32.5 mm (1.3 in)	35 of 100 (Notable)
Cairo 1SW	United States	Record low minimum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Moultrie 2 ESE	United States	Record low maximum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Montelimar	France	Record high maximum temperature	38.2 C (100.8 F)	34 of 100 (Routine)
Bad Bergzabern	Germany	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Wewahitchka	United States	Record low maximum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Ndjamena	Chad	Record high maximum temperature	36.5 C (97.7 F)	33 of 100 (Routine)
Plauen	Germany	Record high minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Askaniia Nova	Ukraine	Record high minimum temperature	21.6 C (70.9 F)	33 of 100 (Routine)
Augusta Bush Fld AP	United States	Record daily precipitation	37.6 mm (1.5 in)	33 of 100 (Routine)
Boise Air Terminal	United States	Record high minimum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Cheb	Czech Republic	Record high minimum temperature	19.4 C (66.9 F)	32 of 100 (Routine)
Bamberg	Germany	Record high maximum temperature	34.3 C (93.7 F)	32 of 100 (Routine)
Weiden	Germany	Record high minimum temperature	19.8 C (67.6 F)	32 of 100 (Routine)
Kyzylorda	Kazakhstan	Record high maximum temperature	41.3 C (106.3 F)	32 of 100 (Routine)
Live Oak	United States	Record low maximum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Monticello 5 SE	United States	Record daily precipitation	69.3 mm (2.7 in)	32 of 100 (Routine)
Valdosta 2 S	United States	Record low maximum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Monteagle	United States	Record low minimum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Rotan	United States	Record daily precipitation	45.7 mm (1.8 in)	32 of 100 (Routine)
Geraldton Airport	Australia	Record high minimum temperature	16.2 C (61.2 F)	31 of 100 (Routine)
Leipzig-Schkeuditz	Germany	Record high minimum temperature	19.0 C (66.2 F)	31 of 100 (Routine)
Rhein Main	Germany	Record high minimum temperature	18.7 C (65.7 F)	31 of 100 (Routine)

Counts by Type and Timescale

990 records

Records set or tied on 21 August 2012 by type: Highest daily maximum 258, Lowest daily maximum 114, Highest daily minimum 307, Lowest daily minimum 187, Heaviest daily rainfall 124.

Records on 21 August 2012 by type
Record type	Records
Highest daily maximum	258
Lowest daily maximum	114
Highest daily minimum	307
Lowest daily minimum	187
Heaviest daily rainfall	124
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 2012 by timescale: all-time 5, monthly 14, daily 971.

How Much Records Were Beaten By

782 broken records

Margins by which the 782 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 56.2. Ties are not counted.

Top 20 by Significance

21 August 2012

Top 20 records on 21 August 2012 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 2012	Kazan, RU	daily rain	39.2 mm (1.5 in)	21.5 mm (0.8 in)	98 years	71 of 100 (Major)
21 August 2012	Lerwick, GB	daily rain	64.2 mm (2.5 in)	54.2 mm (2.1 in)	23 years	54 of 100 (Notable)
21 August 2012	Hefei, CN	daily rain	120.4 mm (4.7 in)	49.9 mm (2.0 in)	57 years	51 of 100 (Notable)
21 August 2012	Astara, AZ	monthly rain	102.1 mm (4.0 in)	19.6 mm (0.8 in)	62 years	47 of 100 (Notable)
21 August 2012	Monte Vista 2W, US	daily low max	16.7 C (62.1 F)	4.4 C (7.9 F)	65 years	46 of 100 (Notable)
21 August 2012	Sanalona II, MX	daily rain	98.0 mm (3.9 in)	50.2 mm (2.0 in)	48 years	45 of 100 (Notable)
21 August 2012	Lichtentanne, DE	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	144 years	44 of 100 (Notable)
21 August 2012	Phuket, TH	daily rain	103.9 mm (4.1 in)	49.1 mm (1.9 in)	41 years	44 of 100 (Notable)
21 August 2012	Berlin-Tegel, DE	daily rain	39.1 mm (1.5 in)	26.1 mm (1.0 in)	32 years	43 of 100 (Notable)
21 August 2012	Ward Mountain, US	daily rain	27.9 mm (1.1 in)	22.8 mm (0.9 in)	19 years	43 of 100 (Notable)
21 August 2012	Nurnberg, DE	daily high min	18.4 C (65.1 F)	1.3 C (2.3 F)	94 years	42 of 100 (Notable)
21 August 2012	Mojave, US	daily high min	26.7 C (80.1 F)	1.1 C (2.0 F)	105 years	42 of 100 (Notable)
21 August 2012	Jena Sternwarte, DE	daily high min	18.7 C (65.7 F)	0.3 C (0.5 F)	177 years	41 of 100 (Notable)
21 August 2012	Freiburg, DE	daily high max	33.2 C (91.8 F)	0.7 C (1.3 F)	118 years	41 of 100 (Notable)
21 August 2012	Huajimic, MX	all-time rain	105.7 mm (4.2 in)	16.3 mm (0.6 in)	9 years	41 of 100 (Notable)
21 August 2012	Tecuala, MX	daily low max	25.0 C (77.0 F)	5.0 C (9.0 F)	49 years	41 of 100 (Notable)
21 August 2012	Red Cloud, US	daily low min	6.7 C (44.1 F)	0.5 C (0.9 F)	108 years	41 of 100 (Notable)
21 August 2012	Callao, US	daily high max	36.1 C (97.0 F)	0.5 C (0.9 F)	109 years	41 of 100 (Notable)
21 August 2012	Kjahta, RU	daily low min	0.8 C (33.4 F)	0.1 C (0.2 F)	110 years	40 of 100 (Notable)
21 August 2012	Independence, US	daily high min	23.9 C (75.0 F)	2.8 C (5.0 F)	70 years	40 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

1800 to 2012

Records set or tied on this calendar date in each year from 1800 to 2012. 2012 had 990 records.

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

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	767
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,289

Download the Data

Data for records on 2012-08-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	731
10 to 20	32
20 to 30	10
30 to 40	4
40 to 50	2
50 to 60	3