Weather Records on 31 August 2021

553 weather records were set or tied worldwide on 31 August 2021. Highest significance: Crystal Springs Exp STN, US.

Key Facts for 31 August 2021

On 31 August 2021, 553 weather records were set or tied at long-record stations worldwide.
247 were record highs and 59 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 19 monthly and 534 daily.
Crystal Springs Exp STN set a daily record precipitation of 92.7 mm (3.6 in) on 31 August 2021.
Across 165 earlier years (1796 to 2026) the same calendar date averaged 435 records.

Record Map

553 stations

553 station records on 31 August 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 August 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Crystal Springs Exp STN	United States	Record daily precipitation	92.7 mm (3.6 in)	80 of 100 (Exceptional)
Bloomfield	United States	Record daily precipitation	83.8 mm (3.3 in)	77 of 100 (Major)
Waynesboro 2 W	United States	Record daily precipitation	113.3 mm (4.5 in)	76 of 100 (Major)
Saint Bernard	United States	Record daily precipitation	90.4 mm (3.6 in)	74 of 100 (Major)
Howells	United States	Record daily precipitation	84.1 mm (3.3 in)	73 of 100 (Major)
Oneonta	United States	Record daily precipitation	98.6 mm (3.9 in)	71 of 100 (Major)
State UNIV	United States	Record daily precipitation	134.9 mm (5.3 in)	71 of 100 (Major)
Farleigh Co-Op Sugar Mill	Australia	Record daily precipitation	77.0 mm (3.0 in)	69 of 100 (Major)
Aberdeen Phillips Fld	United States	Record daily precipitation	95.8 mm (3.8 in)	69 of 100 (Major)
Gainesville Lock	United States	Record daily precipitation	93.0 mm (3.7 in)	67 of 100 (Major)
Ayr Dpi Research STN	Australia	Record daily precipitation	58.8 mm (2.3 in)	66 of 100 (Major)
Home Hill Post Office	Australia	Record daily precipitation	47.0 mm (1.9 in)	66 of 100 (Major)
Koumala Hatfields Road	Australia	Record daily precipitation	76.0 mm (3.0 in)	66 of 100 (Major)
Capella Post Office	Australia	Record daily precipitation	68.0 mm (2.7 in)	66 of 100 (Major)
Toledo	Spain	Record daily precipitation	56.6 mm (2.2 in)	65 of 100 (Major)
Holmleigh	Australia	Record daily precipitation	35.0 mm (1.4 in)	61 of 100 (Major)
Burdekin Shire Council	Australia	Record daily precipitation	55.2 mm (2.2 in)	59 of 100 (Notable)
Tiree	Australia	Record daily precipitation	37.0 mm (1.5 in)	59 of 100 (Notable)
Navacerrada	Spain	Record daily precipitation	65.8 mm (2.6 in)	57 of 100 (Notable)
Monteagle	United States	Record daily precipitation	82.6 mm (3.3 in)	57 of 100 (Notable)
Tellico Plains	United States	Record daily precipitation	66.0 mm (2.6 in)	57 of 100 (Notable)
Lethebrook	Australia	Record daily precipitation	76.0 mm (3.0 in)	56 of 100 (Notable)
Mount Wilkin	Australia	Record daily precipitation	50.5 mm (2.0 in)	56 of 100 (Notable)
Bogunda Station	Australia	Record daily precipitation	46.0 mm (1.8 in)	56 of 100 (Notable)
Belmont 2 SSE	United States	Record daily precipitation	93.2 mm (3.7 in)	56 of 100 (Notable)
Winona 5 E	United States	Record daily precipitation	114.0 mm (4.5 in)	55 of 100 (Notable)
Haleyville	United States	Record daily precipitation	104.1 mm (4.1 in)	54 of 100 (Notable)
Steeleville	United States	Record daily precipitation	56.9 mm (2.2 in)	54 of 100 (Notable)
Mackay M.O	Australia	Record daily precipitation	64.2 mm (2.5 in)	52 of 100 (Notable)
Leeds	United States	Record daily precipitation	69.9 mm (2.8 in)	52 of 100 (Notable)
Aberdeen	United States	Record daily precipitation	83.8 mm (3.3 in)	52 of 100 (Notable)
Kosciusko	United States	Record daily precipitation	90.9 mm (3.6 in)	52 of 100 (Notable)
Parsons Wtp	United States	Record daily precipitation	59.7 mm (2.4 in)	52 of 100 (Notable)
Gomel	Belarus	Record daily precipitation	46.5 mm (1.8 in)	51 of 100 (Notable)
Bardstown 5E	United States	Record daily precipitation	60.5 mm (2.4 in)	50 of 100 (Notable)
Macon 3N	United States	Record daily precipitation	116.8 mm (4.6 in)	50 of 100 (Notable)
Jackson Exp STN	United States	Record daily precipitation	48.3 mm (1.9 in)	50 of 100 (Notable)
Pleystowe Sugar Mill	Australia	Record daily precipitation	65.0 mm (2.6 in)	49 of 100 (Notable)
Reform	United States	Record daily precipitation	82.6 mm (3.3 in)	49 of 100 (Notable)
Robin Hood Station	Australia	Record daily precipitation	28.0 mm (1.1 in)	48 of 100 (Notable)
Bowen Cheetham Salt	Australia	Record daily precipitation	45.4 mm (1.8 in)	48 of 100 (Notable)
Wentworth	Australia	Record daily precipitation	61.3 mm (2.4 in)	48 of 100 (Notable)
Pierce	United States	Record daily precipitation	107.4 mm (4.2 in)	47 of 100 (Notable)
Millport 2 E	United States	Record daily precipitation	105.4 mm (4.1 in)	46 of 100 (Notable)
Castle Rock	United States	Record high maximum temperature	35.6 C (96.1 F)	46 of 100 (Notable)
Rome R B Russell AP	United States	Record daily precipitation	88.4 mm (3.5 in)	46 of 100 (Notable)
Krasnaja_Gora	Russia	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Hamilton	United States	Record daily precipitation	88.1 mm (3.5 in)	45 of 100 (Notable)
Winvic	Australia	Record daily precipitation	51.2 mm (2.0 in)	44 of 100 (Notable)
Vernon	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
St Joseph 3 N	United States	Record low maximum temperature	25.6 C (78.1 F)	44 of 100 (Notable)
Deseret	United States	Record high minimum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Multan Intl	Pakistan	Record daily precipitation	160.0 mm (6.3 in)	43 of 100 (Notable)
Atakpane	Togo	Record high minimum temperature	23.0 C (73.4 F)	43 of 100 (Notable)
Rock Is L&D 15	United States	Record daily precipitation	37.3 mm (1.5 in)	43 of 100 (Notable)
Tell City	United States	Record daily precipitation	75.9 mm (3.0 in)	43 of 100 (Notable)
Hohenwald	United States	Record daily precipitation	64.0 mm (2.5 in)	43 of 100 (Notable)
Proserpine Airport	Australia	Record daily precipitation	62.2 mm (2.4 in)	42 of 100 (Notable)
Crandall 8 N	United States	Record daily precipitation	130.6 mm (5.1 in)	42 of 100 (Notable)
Lynch	United States	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)

Counts by Type and Timescale

553 records

Records set or tied on 31 August 2021 by type: Highest daily maximum 83, Lowest daily maximum 43, Highest daily minimum 164, Lowest daily minimum 16, Heaviest daily rainfall 246, Deepest snow cover 1.

Records on 31 August 2021 by type
Record type	Records
Highest daily maximum	83
Lowest daily maximum	43
Highest daily minimum	164
Lowest daily minimum	16
Heaviest daily rainfall	246
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 31 August 2021 by timescale: all-time 0, monthly 19, daily 534.

How Much Records Were Beaten By

462 broken records

Margins by which the 462 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 130.0. Ties are not counted.

Top 20 by Significance

31 August 2021

Top 20 records on 31 August 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 August 2021	Crystal Springs Exp STN, US	daily rain	92.7 mm (3.6 in)	73.1 mm (2.9 in)	100 years	80 of 100 (Exceptional)
31 August 2021	Bloomfield, US	daily rain	83.8 mm (3.3 in)	70.6 mm (2.8 in)	92 years	77 of 100 (Major)
31 August 2021	Waynesboro 2 W, US	daily rain	113.3 mm (4.5 in)	54.9 mm (2.2 in)	108 years	76 of 100 (Major)
31 August 2021	Saint Bernard, US	daily rain	90.4 mm (3.6 in)	52.3 mm (2.1 in)	92 years	74 of 100 (Major)
31 August 2021	Howells, US	daily rain	84.1 mm (3.3 in)	70.6 mm (2.8 in)	86 years	73 of 100 (Major)
31 August 2021	Oneonta, US	daily rain	98.6 mm (3.9 in)	61.5 mm (2.4 in)	71 years	71 of 100 (Major)
31 August 2021	State UNIV, US	daily rain	134.9 mm (5.3 in)	81.6 mm (3.2 in)	71 years	71 of 100 (Major)
31 August 2021	Farleigh Co-Op Sugar Mill, AU	daily rain	77.0 mm (3.0 in)	64.6 mm (2.5 in)	64 years	69 of 100 (Major)
31 August 2021	Aberdeen Phillips Fld, US	daily rain	95.8 mm (3.8 in)	67.6 mm (2.7 in)	83 years	69 of 100 (Major)
31 August 2021	Gainesville Lock, US	daily rain	93.0 mm (3.7 in)	54.1 mm (2.1 in)	71 years	67 of 100 (Major)
31 August 2021	Ayr Dpi Research STN, AU	daily rain	58.8 mm (2.3 in)	56.5 mm (2.2 in)	64 years	66 of 100 (Major)
31 August 2021	Home Hill Post Office, AU	daily rain	47.0 mm (1.9 in)	42.2 mm (1.7 in)	87 years	66 of 100 (Major)
31 August 2021	Koumala Hatfields Road, AU	daily rain	76.0 mm (3.0 in)	59.7 mm (2.4 in)	55 years	66 of 100 (Major)
31 August 2021	Capella Post Office, AU	daily rain	68.0 mm (2.7 in)	51.7 mm (2.0 in)	55 years	66 of 100 (Major)
31 August 2021	Toledo, ES	monthly rain	56.6 mm (2.2 in)	31.0 mm (1.2 in)	38 years	65 of 100 (Major)
31 August 2021	Holmleigh, AU	daily rain	35.0 mm (1.4 in)	22.3 mm (0.9 in)	100 years	61 of 100 (Major)
31 August 2021	Burdekin Shire Council, AU	daily rain	55.2 mm (2.2 in)	46.2 mm (1.8 in)	32 years	59 of 100 (Notable)
31 August 2021	Tiree, AU	daily rain	37.0 mm (1.5 in)	21.3 mm (0.8 in)	100 years	59 of 100 (Notable)
31 August 2021	Navacerrada, ES	daily rain	65.8 mm (2.6 in)	35.8 mm (1.4 in)	38 years	57 of 100 (Notable)
31 August 2021	Monteagle, US	daily rain	82.6 mm (3.3 in)	57.7 mm (2.3 in)	32 years	57 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

1796 to 2021

Records set or tied on this calendar date in each year from 1796 to 2021. 2021 had 553 records.

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

Records on 08-31 in each year
Year	Records
1796	1
1806	1
1807	2
1813	1
1814	1
1816	1
1827	1
1836	1
1846	1
1849	1
1851	1
1856	2
1858	1
1859	1
1860	1
1861	1
1863	1
1867	1
1869	1
1873	1
1875	1
1876	1
1877	2
1879	2
1881	3
1882	2
1885	1
1886	5
1887	1
1889	1
1890	2
1892	3
1893	1
1894	1
1895	1
1896	1
1897	5
1898	10
1899	4
1900	3
1901	5
1902	5
1903	16
1904	13
1905	8
1906	47
1907	6
1908	12
1909	39
1910	20
1911	31
1912	34
1913	40
1914	23
1915	71
1916	7
1917	60
1918	58
1919	25
1920	46
1921	86
1922	58
1923	63
1924	232
1925	111
1926	148
1927	103
1928	201
1929	300
1930	243
1931	192
1932	807
1933	424
1934	381
1935	540
1936	226
1937	508
1938	324
1939	296
1940	400
1941	528
1942	422
1943	650
1944	638
1945	572
1946	545
1947	473
1948	367
1949	409
1950	662
1951	910
1952	388
1953	1,054
1954	633
1955	539
1956	734
1957	317
1958	417
1959	496
1960	366
1961	625
1962	432
1963	415
1964	591
1965	886
1966	830
1967	952
1968	562
1969	474
1970	558
1971	326
1972	287
1973	793
1974	587
1975	658
1976	732
1977	621
1978	891
1979	400
1980	701
1981	692
1982	586
1983	788
1984	866
1985	854
1986	1,218
1987	836
1988	570
1989	622
1990	966
1991	848
1992	1,274
1993	1,286
1994	1,139
1995	1,077
1996	1,451
1997	943
1998	1,163
1999	988
2000	1,545
2001	944
2002	852
2003	1,232
2004	963
2005	1,782
2006	1,147
2007	1,110
2008	870
2009	1,224
2010	1,490
2011	994
2012	932
2013	771
2014	458
2015	1,074
2016	599
2017	596
2018	366
2019	781
2020	737
2021	553
2022	1,191
2023	600
2024	766
2025	307
2026	595

Download the Data

Data for records on 2021-08-31: 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	361
20 to 40	62
40 to 60	24
60 to 80	12
80 to 100	2
100 to 120	0
120 to 140	1