Weather Records on 21 August 2015

651 weather records were set or tied worldwide on 21 August 2015. Highest significance: Carlisle Wtp, US.

Key Facts for 21 August 2015

On 21 August 2015, 651 weather records were set or tied at long-record stations worldwide.
317 were record highs and 206 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 642 daily.
Carlisle Wtp set a daily record precipitation of 72.4 mm (2.9 in) on 21 August 2015.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 449 records.

Record Map

651 stations

651 station records on 21 August 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Carlisle Wtp	United States	Record daily precipitation	72.4 mm (2.9 in)	60 of 100 (Major)
Cleburne	United States	Record low maximum temperature	22.2 C (72.0 F)	60 of 100 (Major)
Wirrulla	Australia	Record daily precipitation	32.0 mm (1.3 in)	56 of 100 (Notable)
Karcultaby	Australia	Record daily precipitation	30.4 mm (1.2 in)	55 of 100 (Notable)
Corsicana	United States	Record daily precipitation	75.4 mm (3.0 in)	55 of 100 (Notable)
Liberty 1 NE	United States	Record daily precipitation	58.2 mm (2.3 in)	54 of 100 (Notable)
Wirrulla (Pimbena)	Australia	Record daily precipitation	26.0 mm (1.0 in)	53 of 100 (Notable)
Cape May 2 NW	United States	Record daily precipitation	75.4 mm (3.0 in)	53 of 100 (Notable)
Biglerville	United States	Record daily precipitation	124.7 mm (4.9 in)	52 of 100 (Notable)
Wellington	United States	Record low minimum temperature	6.1 C (43.0 F)	51 of 100 (Notable)
Monroe City	United States	Record low minimum temperature	8.9 C (48.0 F)	51 of 100 (Notable)
Marshall	United States	Record low maximum temperature	21.7 C (71.1 F)	51 of 100 (Notable)
Monroe City	United States	Record low maximum temperature	20.0 C (68.0 F)	50 of 100 (Notable)
Grapevine Dam	United States	Record low maximum temperature	22.2 C (72.0 F)	50 of 100 (Notable)
Chernjaevo	Russia	Record daily precipitation	64.8 mm (2.6 in)	48 of 100 (Notable)
Corsicana	United States	Record low maximum temperature	22.2 C (72.0 F)	47 of 100 (Notable)
Conowingo Dam	United States	Record daily precipitation	88.9 mm (3.5 in)	46 of 100 (Notable)
Flatonia 4SE	United States	Record low maximum temperature	28.3 C (82.9 F)	46 of 100 (Notable)
Dumas	United States	Record low maximum temperature	23.3 C (73.9 F)	45 of 100 (Notable)
Picayune	United States	Record daily precipitation	81.3 mm (3.2 in)	45 of 100 (Notable)
Wills Pt	United States	Record low maximum temperature	21.1 C (70.0 F)	45 of 100 (Notable)
Greenville	United States	Record low maximum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Weslaco	United States	Record low maximum temperature	26.1 C (79.0 F)	44 of 100 (Notable)
Dothan Rgnl AP	United States	Record daily precipitation	60.7 mm (2.4 in)	44 of 100 (Notable)
Durham	United Kingdom	Record high minimum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Adel	United States	Record high minimum temperature	16.1 C (61.0 F)	43 of 100 (Notable)
Harlingen	United States	Record low maximum temperature	26.7 C (80.1 F)	43 of 100 (Notable)
Navarro Mills Dam	United States	Record low maximum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Yeelana (Brimpton Lake)	Australia	Record daily precipitation	27.2 mm (1.1 in)	42 of 100 (Notable)
Cummins	Australia	Record daily precipitation	28.2 mm (1.1 in)	42 of 100 (Notable)
Cuero	United States	Record daily precipitation	63.0 mm (2.5 in)	42 of 100 (Notable)
Lowell	United States	Record high minimum temperature	22.2 C (72.0 F)	41 of 100 (Notable)
Greeley	United States	Record low minimum temperature	6.7 C (44.1 F)	41 of 100 (Notable)
Elk	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Woodstock	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Athens	United States	Record low maximum temperature	24.4 C (75.9 F)	40 of 100 (Notable)
Williamsport	United States	Record daily precipitation	80.0 mm (3.1 in)	39 of 100 (Notable)
Beaumont City	United States	Record low maximum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Denton 2 SE	United States	Record low maximum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Hillsboro	United States	Record low maximum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Ft Kent	United States	Record high minimum temperature	19.4 C (66.9 F)	38 of 100 (Notable)
Bardwell Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
El Campo	United States	Record low minimum temperature	18.3 C (64.9 F)	37 of 100 (Notable)
Pinnacles Np	United States	Record low minimum temperature	0.6 C (33.1 F)	36 of 100 (Notable)
Woodland	United States	Record high minimum temperature	20.6 C (69.1 F)	36 of 100 (Notable)
Fulton 3 W	United States	Record low maximum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Anahuac	United States	Record low maximum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Bogucany	Russia	Record high maximum temperature	31.4 C (88.5 F)	35 of 100 (Notable)
Brundidge	United States	Record daily precipitation	57.7 mm (2.3 in)	35 of 100 (Notable)
Homer 1N	United States	Record low maximum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Brassua Dam	United States	Record high minimum temperature	19.4 C (66.9 F)	35 of 100 (Notable)
Sussex 1 NW	United States	Record daily precipitation	43.7 mm (1.7 in)	35 of 100 (Notable)
Oswego	United States	Record daily precipitation	34.0 mm (1.3 in)	35 of 100 (Notable)
Navarro Mills Dam	United States	Record daily precipitation	57.2 mm (2.3 in)	35 of 100 (Notable)
Rainbow	United States	Record daily precipitation	62.7 mm (2.5 in)	35 of 100 (Notable)
Del Norte 3ENE	United States	Record high maximum temperature	29.4 C (84.9 F)	34 of 100 (Routine)
Long Branch-Oakhurst	United States	Record daily precipitation	39.4 mm (1.6 in)	34 of 100 (Routine)
Downsville Dam	United States	Record daily precipitation	47.2 mm (1.9 in)	34 of 100 (Routine)
Brenham	United States	Record low maximum temperature	25.0 C (77.0 F)	34 of 100 (Routine)
Lavon Dam	United States	Record low minimum temperature	13.3 C (55.9 F)	34 of 100 (Routine)

Counts by Type and Timescale

651 records

Records set or tied on 21 August 2015 by type: Highest daily maximum 148, Lowest daily maximum 136, Highest daily minimum 169, Lowest daily minimum 70, Heaviest daily rainfall 128.

Records on 21 August 2015 by type
Record type	Records
Highest daily maximum	148
Lowest daily maximum	136
Highest daily minimum	169
Lowest daily minimum	70
Heaviest daily rainfall	128
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 2015 by timescale: all-time 0, monthly 9, daily 642.

How Much Records Were Beaten By

522 broken records

Margins by which the 522 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.6. Ties are not counted.

Top 20 by Significance

21 August 2015

Top 20 records on 21 August 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 2015	Carlisle Wtp, US	daily rain	72.4 mm (2.9 in)	41.4 mm (1.6 in)	170 years	60 of 100 (Major)
21 August 2015	Cleburne, US	daily low max	22.2 C (72.0 F)	7.2 C (13.0 F)	96 years	60 of 100 (Major)
21 August 2015	Wirrulla, AU	daily rain	32.0 mm (1.3 in)	21.0 mm (0.8 in)	24 years	56 of 100 (Notable)
21 August 2015	Karcultaby, AU	daily rain	30.4 mm (1.2 in)	15.4 mm (0.6 in)	30 years	55 of 100 (Notable)
21 August 2015	Corsicana, US	daily rain	75.4 mm (3.0 in)	30.4 mm (1.2 in)	96 years	55 of 100 (Notable)
21 August 2015	Liberty 1 NE, US	daily rain	58.2 mm (2.3 in)	21.9 mm (0.9 in)	108 years	54 of 100 (Notable)
21 August 2015	Wirrulla (Pimbena), AU	daily rain	26.0 mm (1.0 in)	19.4 mm (0.8 in)	30 years	53 of 100 (Notable)
21 August 2015	Cape May 2 NW, US	daily rain	75.4 mm (3.0 in)	33.2 mm (1.3 in)	88 years	53 of 100 (Notable)
21 August 2015	Biglerville, US	monthly rain	124.7 mm (4.9 in)	31.7 mm (1.2 in)	31 years	52 of 100 (Notable)
21 August 2015	Wellington, US	monthly low min	6.1 C (43.0 F)	0.6 C (1.1 F)	103 years	51 of 100 (Notable)
21 August 2015	Monroe City, US	daily low min	8.9 C (48.0 F)	3.9 C (7.0 F)	112 years	51 of 100 (Notable)
21 August 2015	Marshall, US	daily low max	21.7 C (71.1 F)	4.4 C (7.9 F)	96 years	51 of 100 (Notable)
21 August 2015	Monroe City, US	daily low max	20.0 C (68.0 F)	3.9 C (7.0 F)	108 years	50 of 100 (Notable)
21 August 2015	Grapevine Dam, US	daily low max	22.2 C (72.0 F)	3.4 C (6.1 F)	108 years	50 of 100 (Notable)
21 August 2015	Chernjaevo, RU	daily rain	64.8 mm (2.6 in)	24.6 mm (1.0 in)	48 years	48 of 100 (Notable)
21 August 2015	Corsicana, US	daily low max	22.2 C (72.0 F)	2.8 C (5.0 F)	96 years	47 of 100 (Notable)
21 August 2015	Conowingo Dam, US	daily rain	88.9 mm (3.5 in)	51.6 mm (2.0 in)	17 years	46 of 100 (Notable)
21 August 2015	Flatonia 4SE, US	daily low max	28.3 C (82.9 F)	2.3 C (4.1 F)	96 years	46 of 100 (Notable)
21 August 2015	Dumas, US	daily low max	23.3 C (73.9 F)	2.3 C (4.1 F)	96 years	45 of 100 (Notable)
21 August 2015	Picayune, US	daily rain	81.3 mm (3.2 in)	33.3 mm (1.3 in)	66 years	45 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 2015

Records set or tied on this calendar date in each year from 1800 to 2015. 2015 had 651 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 2015-08-21: 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	468
10 to 20	35
20 to 30	9
30 to 40	6
40 to 50	2
50 to 60	2