Weather Records on 21 August 1991

828 weather records were set or tied worldwide on 21 August 1991. Highest significance: Bainbridge 2 E, US.

Key Facts for 21 August 1991

On 21 August 1991, 828 weather records were set or tied at long-record stations worldwide.
318 were record highs and 248 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 26 monthly and 799 daily.
Bainbridge 2 E set a daily record precipitation of 50.8 mm (2.0 in) on 21 August 1991.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 448 records.

Record Map

828 stations

828 station records on 21 August 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bainbridge 2 E	United States	Record daily precipitation	50.8 mm (2.0 in)	64 of 100 (Major)
Bradford Cntrl Fs	United States	Record daily precipitation	38.1 mm (1.5 in)	56 of 100 (Notable)
Vero Beach Intl AP	United States	Record daily precipitation	94.7 mm (3.7 in)	56 of 100 (Notable)
Bajanaul	Kazakhstan	Record daily precipitation	72.8 mm (2.9 in)	55 of 100 (Notable)
Naze	Japan	Record daily precipitation	309.1 mm (12.2 in)	52 of 100 (Notable)
Rocky Rvr Dam	United States	Record daily precipitation	112.5 mm (4.4 in)	52 of 100 (Notable)
Griffiss AFB	United States	Record daily precipitation	46.7 mm (1.8 in)	51 of 100 (Notable)
Rockdale	United States	Record daily precipitation	61.0 mm (2.4 in)	50 of 100 (Notable)
Chornobyl	Ukraine	Record daily precipitation	64.0 mm (2.5 in)	49 of 100 (Notable)
Sherburne	United States	Record daily precipitation	37.1 mm (1.5 in)	49 of 100 (Notable)
Gridino	Russia	Record daily precipitation	31.8 mm (1.3 in)	48 of 100 (Notable)
Adelaide (Clapham)	Australia	Record daily precipitation	26.6 mm (1.0 in)	47 of 100 (Notable)
Mt Ida 3 SE	United States	Record daily precipitation	52.6 mm (2.1 in)	47 of 100 (Notable)
Urakawa	Japan	Record daily precipitation	103.1 mm (4.1 in)	46 of 100 (Notable)
Arnett 3NE	United States	Record daily precipitation	47.2 mm (1.9 in)	46 of 100 (Notable)
Kovda	Russia	Record daily precipitation	84.1 mm (3.3 in)	45 of 100 (Notable)
Ganca	Azerbaijan	Record high minimum temperature	22.9 C (73.2 F)	44 of 100 (Notable)
Waynesboro 2 W	United States	Record low minimum temperature	12.2 C (54.0 F)	44 of 100 (Notable)
Utica Oneida Co AP	United States	Record daily precipitation	48.8 mm (1.9 in)	44 of 100 (Notable)
Nerchinskij Zavod	Russia	Record high minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
New London Lock #22	United States	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Union Springs 9 S	United States	Record low minimum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Ratcliff	United States	Record daily precipitation	70.1 mm (2.8 in)	41 of 100 (Notable)
Monclova (Dge)	Mexico	Record low maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Durham	United States	Record low maximum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Boonville 4 SSW	United States	Record daily precipitation	51.3 mm (2.0 in)	40 of 100 (Notable)
Semonaiha	Kazakhstan	Record daily precipitation	33.6 mm (1.3 in)	39 of 100 (Notable)
McEnsk	Russia	Record daily precipitation	43.4 mm (1.7 in)	39 of 100 (Notable)
Selinsgrove 2 S	United States	Record daily precipitation	37.3 mm (1.5 in)	39 of 100 (Notable)
Itajuipe (Piranji)	Brazil	Record daily precipitation	41.5 mm (1.6 in)	38 of 100 (Notable)
Chippewa Lake	United States	Record low maximum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Uraidla	Australia	Record daily precipitation	34.4 mm (1.4 in)	37 of 100 (Notable)
Orel	Russia	Record daily precipitation	76.7 mm (3.0 in)	37 of 100 (Notable)
Albany 3 SE	United States	Record low minimum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Dutch Harbor	United States	Record low minimum temperature	0.6 C (33.1 F)	37 of 100 (Notable)
Macclesfield	Australia	Record daily precipitation	28.6 mm (1.1 in)	36 of 100 (Notable)
Kaluga	Russia	Record daily precipitation	77.5 mm (3.1 in)	36 of 100 (Notable)
Shepaug Dam	United States	Record daily precipitation	66.0 mm (2.6 in)	36 of 100 (Notable)
Haverhill	United States	Record low maximum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Lebanon	United States	Record low minimum temperature	12.2 C (54.0 F)	36 of 100 (Notable)
Mount Barker	Australia	Record daily precipitation	28.0 mm (1.1 in)	35 of 100 (Notable)
Bath	United States	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Mt Morris 2W	United States	Record daily precipitation	29.5 mm (1.2 in)	35 of 100 (Notable)
Fremont	United States	Record low maximum temperature	19.4 C (66.9 F)	35 of 100 (Notable)
Hutchinson 10 SW	United States	Record daily precipitation	50.5 mm (2.0 in)	34 of 100 (Routine)
Portland Jetport	United States	Record daily precipitation	36.1 mm (1.4 in)	34 of 100 (Routine)
Belair (State Flora Nursery)	Australia	Record daily precipitation	25.0 mm (1.0 in)	33 of 100 (Routine)
Balmoral (Post Office)	Australia	Record daily precipitation	26.0 mm (1.0 in)	33 of 100 (Routine)
Martin Dam	United States	Record low minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Gravelly	United States	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Norwich	United States	Record daily precipitation	37.6 mm (1.5 in)	33 of 100 (Routine)
Madisonville	United States	Record high minimum temperature	29.4 C (84.9 F)	33 of 100 (Routine)
Slavgorod	Russia	Record daily precipitation	53.3 mm (2.1 in)	32 of 100 (Routine)
Richfield	United States	Record high maximum temperature	35.6 C (96.1 F)	32 of 100 (Routine)
Holyoke	United States	Record daily precipitation	51.8 mm (2.0 in)	32 of 100 (Routine)
Lyons Falls	United States	Record daily precipitation	39.6 mm (1.6 in)	32 of 100 (Routine)
Raymond	United States	Record daily precipitation	28.4 mm (1.1 in)	32 of 100 (Routine)
Snake Creek Powerhouse	United States	Record high maximum temperature	32.2 C (90.0 F)	32 of 100 (Routine)
Flagstaff AP	United States	Record high maximum temperature	32.2 C (90.0 F)	32 of 100 (Routine)
Cut Bank AP	United States	Record high minimum temperature	16.7 C (62.1 F)	32 of 100 (Routine)

Counts by Type and Timescale

828 records

Records set or tied on 21 August 1991 by type: Highest daily maximum 193, Lowest daily maximum 80, Highest daily minimum 125, Lowest daily minimum 168, Heaviest daily rainfall 262.

Records on 21 August 1991 by type
Record type	Records
Highest daily maximum	193
Lowest daily maximum	80
Highest daily minimum	125
Lowest daily minimum	168
Heaviest daily rainfall	262
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1991 by timescale: all-time 3, monthly 26, daily 799.

How Much Records Were Beaten By

622 broken records

Margins by which the 622 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 175.7. Ties are not counted.

Top 20 by Significance

21 August 1991

Top 20 records on 21 August 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1991	Bainbridge 2 E, US	daily rain	50.8 mm (2.0 in)	37.6 mm (1.5 in)	78 years	64 of 100 (Major)
21 August 1991	Bradford Cntrl Fs, US	daily rain	38.1 mm (1.5 in)	29.2 mm (1.1 in)	68 years	56 of 100 (Notable)
21 August 1991	Vero Beach Intl AP, US	daily rain	94.7 mm (3.7 in)	54.1 mm (2.1 in)	44 years	56 of 100 (Notable)
21 August 1991	Bajanaul, KZ	monthly rain	72.8 mm (2.9 in)	29.6 mm (1.2 in)	0 years	55 of 100 (Notable)
21 August 1991	Naze, JP	daily rain	309.1 mm (12.2 in)	175.7 mm (6.9 in)	26 years	52 of 100 (Notable)
21 August 1991	Rocky Rvr Dam, US	daily rain	112.5 mm (4.4 in)	92.7 mm (3.6 in)	29 years	52 of 100 (Notable)
21 August 1991	Griffiss AFB, US	daily rain	46.7 mm (1.8 in)	23.8 mm (0.9 in)	76 years	51 of 100 (Notable)
21 August 1991	Rockdale, US	daily rain	61.0 mm (2.4 in)	48.8 mm (1.9 in)	20 years	50 of 100 (Notable)
21 August 1991	Chornobyl, UA	daily rain	64.0 mm (2.5 in)	57.6 mm (2.3 in)	22 years	49 of 100 (Notable)
21 August 1991	Sherburne, US	daily rain	37.1 mm (1.5 in)	18.0 mm (0.7 in)	76 years	49 of 100 (Notable)
21 August 1991	Gridino, RU	daily rain	31.8 mm (1.3 in)	21.0 mm (0.8 in)	29 years	48 of 100 (Notable)
21 August 1991	Adelaide (Clapham), AU	daily rain	26.6 mm (1.0 in)	16.7 mm (0.7 in)	36 years	47 of 100 (Notable)
21 August 1991	Mt Ida 3 SE, US	daily rain	52.6 mm (2.1 in)	28.5 mm (1.1 in)	72 years	47 of 100 (Notable)
21 August 1991	Urakawa, JP	daily rain	103.1 mm (4.1 in)	72.1 mm (2.8 in)	22 years	46 of 100 (Notable)
21 August 1991	Arnett 3NE, US	daily rain	47.2 mm (1.9 in)	32.7 mm (1.3 in)	49 years	46 of 100 (Notable)
21 August 1991	Kovda, RU	daily rain	84.1 mm (3.3 in)	70.1 mm (2.8 in)	2 years	45 of 100 (Notable)
21 August 1991	Ganca, AZ	daily high min	22.9 C (73.2 F)	1.4 C (2.5 F)	94 years	44 of 100 (Notable)
21 August 1991	Waynesboro 2 W, US	daily low min	12.2 C (54.0 F)	1.1 C (2.0 F)	97 years	44 of 100 (Notable)
21 August 1991	Utica Oneida Co AP, US	daily rain	48.8 mm (1.9 in)	33.6 mm (1.3 in)	26 years	44 of 100 (Notable)
21 August 1991	Nerchinskij Zavod, RU	daily high min	15.6 C (60.1 F)	1.6 C (2.9 F)	98 years	43 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 1991

Records set or tied on this calendar date in each year from 1800 to 1991. 1991 had 828 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 1991-08-21: 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 2026-10-14 (14 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 25	587
25 to 50	26
50 to 75	6
75 to 100	2
100 to 125	0
125 to 150	0
150 to 175	0
175 to 200	1