Weather Records on 9 August 2021

523 weather records were set or tied worldwide on 9 August 2021. Highest significance: Miyako, JP.

Key Facts for 9 August 2021

On 9 August 2021, 523 weather records were set or tied at long-record stations worldwide.
285 were record highs and 78 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 15 monthly and 503 daily.
Miyako set a daily record precipitation of 161.0 mm (6.3 in) on 9 August 2021.
Across 156 earlier years (1798 to 2026) the same calendar date averaged 474 records.

Record Map

523 stations

523 station records on 9 August 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 August 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Miyako	Japan	Record daily precipitation	161.0 mm (6.3 in)	60 of 100 (Major)
Vierema Kaarakkala	Finland	Record daily precipitation	45.6 mm (1.8 in)	59 of 100 (Notable)
Saigo	Japan	Record daily precipitation	254.0 mm (10.0 in)	58 of 100 (Notable)
Sakai	Japan	Record daily precipitation	119.1 mm (4.7 in)	58 of 100 (Notable)
Robinson	United States	Record daily precipitation	85.1 mm (3.4 in)	56 of 100 (Notable)
Boonville 1S	United States	Record daily precipitation	74.2 mm (2.9 in)	55 of 100 (Notable)
Poplar Bluff	United States	Record daily precipitation	71.6 mm (2.8 in)	55 of 100 (Notable)
Hamada	Japan	Record daily precipitation	215.9 mm (8.5 in)	53 of 100 (Notable)
Friendship	United States	Record daily precipitation	35.6 mm (1.4 in)	53 of 100 (Notable)
Charles City	United States	Record daily precipitation	111.3 mm (4.4 in)	52 of 100 (Notable)
Ethridge	United States	Record daily precipitation	36.3 mm (1.4 in)	51 of 100 (Notable)
Fayette	United States	Record daily precipitation	83.8 mm (3.3 in)	50 of 100 (Notable)
Matsue	Japan	Record daily precipitation	156.0 mm (6.1 in)	49 of 100 (Notable)
Plaisance (Mauritiu	Mauritius	Record daily precipitation	36.1 mm (1.4 in)	49 of 100 (Notable)
Fairbury Wwtp	United States	Record daily precipitation	69.9 mm (2.8 in)	48 of 100 (Notable)
Northport	United States	Record low maximum temperature	16.1 C (61.0 F)	48 of 100 (Notable)
Bogucar	Russia	Record high minimum temperature	26.3 C (79.3 F)	47 of 100 (Notable)
Petersburg 1E	United States	Record daily precipitation	77.0 mm (3.0 in)	47 of 100 (Notable)
Sugar Land	United States	Record high minimum temperature	27.8 C (82.0 F)	46 of 100 (Notable)
Muskegon Co AP	United States	Record daily precipitation	29.2 mm (1.1 in)	46 of 100 (Notable)
Ganca	Azerbaijan	Record high minimum temperature	26.0 C (78.8 F)	45 of 100 (Notable)
Postville	United States	Record daily precipitation	38.6 mm (1.5 in)	45 of 100 (Notable)
Union City	United States	Record daily precipitation	39.9 mm (1.6 in)	44 of 100 (Notable)
Eagle Rvr	United States	Record daily precipitation	45.7 mm (1.8 in)	44 of 100 (Notable)
Congerville 2NW	United States	Record daily precipitation	56.9 mm (2.2 in)	43 of 100 (Notable)
Virtsu	Estonia	Record daily precipitation	43.0 mm (1.7 in)	42 of 100 (Notable)
Alton - Melvin Price L&D	United States	Record daily precipitation	49.0 mm (1.9 in)	42 of 100 (Notable)
Shelby	United States	Record daily precipitation	62.5 mm (2.5 in)	42 of 100 (Notable)
Ladysmith 3W	United States	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Summit Lake	United States	Record daily precipitation	51.1 mm (2.0 in)	42 of 100 (Notable)
New Hampton	United States	Record daily precipitation	111.3 mm (4.4 in)	41 of 100 (Notable)
Mc Henry 3W	United States	Record high minimum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Colville	United States	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Ritzville 1 SSE	United States	Record low maximum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Clayton Muni Air Pk	United States	Record high maximum temperature	37.2 C (99.0 F)	41 of 100 (Notable)
Pekoa Airport (Sant	Vanuatu	Record daily precipitation	102.1 mm (4.0 in)	40 of 100 (Notable)
1 ENE Fairfield	United States	Record daily precipitation	76.5 mm (3.0 in)	40 of 100 (Notable)
Surry Mtn Lake	United States	Record daily precipitation	53.3 mm (2.1 in)	40 of 100 (Notable)
Hiroshima	Japan	Record daily precipitation	163.1 mm (6.4 in)	39 of 100 (Notable)
Kolka	Latvia	Record daily precipitation	26.2 mm (1.0 in)	39 of 100 (Notable)
Manchester #2	United States	Record daily precipitation	74.4 mm (2.9 in)	39 of 100 (Notable)
Heltermaa	Estonia	Record daily precipitation	39.8 mm (1.6 in)	37 of 100 (Notable)
Wynne	United States	Record high minimum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
First Connecticut Lake	United States	Record high minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Oahe Dam	United States	Record daily precipitation	32.3 mm (1.3 in)	37 of 100 (Notable)
Culebra #2	United States	Record high maximum temperature	33.3 C (91.9 F)	37 of 100 (Notable)
Kunming	China	Record daily precipitation	88.6 mm (3.5 in)	36 of 100 (Notable)
Jendouba	Tunisia	Record high maximum temperature	49.0 C (120.2 F)	36 of 100 (Notable)
Iizuka	Japan	Record daily precipitation	73.9 mm (2.9 in)	35 of 100 (Notable)
Tromso	Norway	Record high minimum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Asele	Sweden	Record daily precipitation	27.7 mm (1.1 in)	35 of 100 (Notable)
Williamsville	United States	Record daily precipitation	41.9 mm (1.6 in)	35 of 100 (Notable)
Waukesha Wwtp	United States	Record daily precipitation	34.3 mm (1.4 in)	35 of 100 (Notable)
Mia Mia	Australia	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
Torsvag Fyr	Norway	Record high minimum temperature	15.3 C (59.5 F)	34 of 100 (Routine)
Salem	United States	Record daily precipitation	47.8 mm (1.9 in)	34 of 100 (Routine)
Caledonia	United States	Record daily precipitation	78.2 mm (3.1 in)	34 of 100 (Routine)
Poteet	United States	Record high minimum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Alpena Co Rgnl AP	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Owase	Japan	Record high minimum temperature	26.9 C (80.4 F)	32 of 100 (Routine)

Counts by Type and Timescale

523 records

Records set or tied on 9 August 2021 by type: Highest daily maximum 101, Lowest daily maximum 43, Highest daily minimum 184, Lowest daily minimum 35, Heaviest daily rainfall 160.

Records on 9 August 2021 by type
Record type	Records
Highest daily maximum	101
Lowest daily maximum	43
Highest daily minimum	184
Lowest daily minimum	35
Heaviest daily rainfall	160
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 August 2021 by timescale: all-time 5, monthly 15, daily 503.

How Much Records Were Beaten By

424 broken records

Margins by which the 424 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 225.0. Ties are not counted.

Top 20 by Significance

9 August 2021

Top 20 records on 9 August 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 August 2021	Miyako, JP	daily rain	161.0 mm (6.3 in)	75.9 mm (3.0 in)	62 years	60 of 100 (Major)
9 August 2021	Vierema Kaarakkala, FI	daily rain	45.6 mm (1.8 in)	24.9 mm (1.0 in)	59 years	59 of 100 (Notable)
9 August 2021	Saigo, JP	daily rain	254.0 mm (10.0 in)	225.0 mm (8.9 in)	39 years	58 of 100 (Notable)
9 August 2021	Sakai, JP	daily rain	119.1 mm (4.7 in)	87.1 mm (3.4 in)	39 years	58 of 100 (Notable)
9 August 2021	Robinson, US	monthly rain	85.1 mm (3.4 in)	7.6 mm (0.30 in)	118 years	56 of 100 (Notable)
9 August 2021	Boonville 1S, US	daily rain	74.2 mm (2.9 in)	23.4 mm (0.9 in)	121 years	55 of 100 (Notable)
9 August 2021	Poplar Bluff, US	daily rain	71.6 mm (2.8 in)	25.6 mm (1.0 in)	100 years	55 of 100 (Notable)
9 August 2021	Hamada, JP	daily rain	215.9 mm (8.5 in)	138.9 mm (5.5 in)	23 years	53 of 100 (Notable)
9 August 2021	Friendship, US	daily rain	35.6 mm (1.4 in)	32.6 mm (1.3 in)	82 years	53 of 100 (Notable)
9 August 2021	Charles City, US	daily rain	111.3 mm (4.4 in)	81.6 mm (3.2 in)	8 years	52 of 100 (Notable)
9 August 2021	Ethridge, US	daily rain	36.3 mm (1.4 in)	24.6 mm (1.0 in)	47 years	51 of 100 (Notable)
9 August 2021	Fayette, US	daily rain	83.8 mm (3.3 in)	42.9 mm (1.7 in)	42 years	50 of 100 (Notable)
9 August 2021	Matsue, JP	daily rain	156.0 mm (6.1 in)	115.6 mm (4.6 in)	7 years	49 of 100 (Notable)
9 August 2021	Plaisance (Mauritiu, MU	daily rain	36.1 mm (1.4 in)	16.5 mm (0.6 in)	66 years	49 of 100 (Notable)
9 August 2021	Fairbury Wwtp, US	daily rain	69.9 mm (2.8 in)	55.2 mm (2.2 in)	14 years	48 of 100 (Notable)
9 August 2021	Northport, US	daily low max	16.1 C (61.0 F)	4.5 C (8.1 F)	114 years	48 of 100 (Notable)
9 August 2021	Bogucar, RU	all-time high min	26.3 C (79.3 F)	0.2 C (0.4 F)	67 years	47 of 100 (Notable)
9 August 2021	Petersburg 1E, US	daily rain	77.0 mm (3.0 in)	63.5 mm (2.5 in)	15 years	47 of 100 (Notable)
9 August 2021	Sugar Land, US	daily high min	27.8 C (82.0 F)	1.1 C (2.0 F)	104 years	46 of 100 (Notable)
9 August 2021	Muskegon Co AP, US	daily rain	29.2 mm (1.1 in)	8.1 mm (0.32 in)	115 years	46 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

1798 to 2021

Records set or tied on this calendar date in each year from 1798 to 2021. 2021 had 523 records.

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

Records on 08-09 in each year
Year	Records
1798	2
1800	1
1838	1
1845	3
1856	1
1859	3
1861	1
1863	2
1868	1
1870	1
1871	1
1873	1
1875	1
1878	1
1881	3
1884	2
1886	1
1887	1
1888	1
1889	1
1890	1
1891	4
1892	4
1893	3
1894	3
1895	1
1896	3
1897	7
1898	12
1899	4
1900	8
1901	3
1902	3
1903	6
1904	9
1905	5
1906	15
1907	9
1908	9
1909	51
1910	16
1911	44
1912	47
1913	76
1914	21
1915	61
1916	37
1917	46
1918	210
1919	49
1920	289
1921	36
1922	70
1923	73
1924	143
1925	307
1926	142
1927	391
1928	220
1929	127
1930	570
1931	399
1932	194
1933	250
1934	654
1935	587
1936	519
1937	351
1938	379
1939	480
1940	455
1941	372
1942	527
1943	366
1944	647
1945	365
1946	307
1947	544
1948	440
1949	715
1950	407
1951	405
1952	317
1953	363
1954	377
1955	433
1956	278
1957	347
1958	417
1959	453
1960	459
1961	347
1962	636
1963	500
1964	755
1965	632
1966	568
1967	457
1968	1,037
1969	527
1970	751
1971	543
1972	1,089
1973	547
1974	660
1975	790
1976	883
1977	453
1978	784
1979	630
1980	945
1981	941
1982	935
1983	839
1984	683
1985	714
1986	509
1987	927
1988	625
1989	2,082
1990	799
1991	988
1992	1,699
1993	702
1994	1,097
1995	1,417
1996	864
1997	1,446
1998	969
1999	1,370
2000	1,237
2001	1,485
2002	1,167
2003	1,344
2004	941
2005	1,001
2006	828
2007	1,687
2008	667
2009	1,028
2010	1,393
2011	1,177
2012	843
2013	761
2014	531
2015	595
2016	634
2017	773
2018	972
2019	717
2020	643
2021	523
2022	793
2023	820
2024	952
2025	799
2026	1,019

Download the Data

Data for records on 2021-08-09: 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 50	413
50 to 100	8
100 to 150	2
150 to 200	0
200 to 250	1