Weather Records on 1 September 2021

751 weather records were set or tied worldwide on 1 September 2021. Highest significance: Irvinebank, AU.

Key Facts for 1 September 2021

On 1 September 2021, 751 weather records were set or tied at long-record stations worldwide.
303 were record highs and 138 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 28 monthly and 721 daily.
Irvinebank set a daily record precipitation of 41.2 mm (1.6 in) on 1 September 2021.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 439 records.

Record Map

751 stations

751 station records on 1 September 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 September 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Irvinebank	Australia	Record daily precipitation	41.2 mm (1.6 in)	80 of 100 (Exceptional)
Ny City Cntrl Park	United States	Record daily precipitation	181.1 mm (7.1 in)	78 of 100 (Major)
Daroca	Spain	Record daily precipitation	95.2 mm (3.7 in)	77 of 100 (Major)
E Stroudsburg	United States	Record daily precipitation	120.7 mm (4.8 in)	70 of 100 (Major)
Hartford Brainard Fld	United States	Record daily precipitation	112.5 mm (4.4 in)	70 of 100 (Major)
Danbury	United States	Record daily precipitation	146.3 mm (5.8 in)	68 of 100 (Major)
Middletown Harrisburg Intl AP	United States	Record daily precipitation	168.7 mm (6.6 in)	68 of 100 (Major)
Newark Liberty Intl AP	United States	Record daily precipitation	213.6 mm (8.4 in)	68 of 100 (Major)
Altoona Blair Co AP	United States	Record daily precipitation	132.3 mm (5.2 in)	67 of 100 (Major)
Hartford-Bradley Intl AP	United States	Record daily precipitation	103.4 mm (4.1 in)	67 of 100 (Major)
New Haven Tweed AP	United States	Record daily precipitation	100.8 mm (4.0 in)	67 of 100 (Major)
Upper Barron	Australia	Record daily precipitation	74.0 mm (2.9 in)	66 of 100 (Major)
Bear Gap	United States	Record daily precipitation	146.8 mm (5.8 in)	66 of 100 (Major)
Poughkeepsie AP	United States	Record daily precipitation	141.5 mm (5.6 in)	65 of 100 (Major)
Mt Sophia	Australia	Record daily precipitation	233.0 mm (9.2 in)	64 of 100 (Major)
Newark Ag Farm	United States	Record daily precipitation	113.5 mm (4.5 in)	64 of 100 (Major)
Boulder	United States	Record daily precipitation	43.7 mm (1.7 in)	62 of 100 (Major)
Neshaminy Falls	United States	Record daily precipitation	106.4 mm (4.2 in)	61 of 100 (Major)
South Johnstone Exp STN	Australia	Record daily precipitation	66.0 mm (2.6 in)	60 of 100 (Major)
Newnan 7 WNW	United States	Record daily precipitation	79.8 mm (3.1 in)	60 of 100 (Major)
Fairmont	United States	Record daily precipitation	60.2 mm (2.4 in)	60 of 100 (Major)
Reading Wb City	United States	Record daily precipitation	141.2 mm (5.6 in)	60 of 100 (Major)
Lebanon 2 W	United States	Record daily precipitation	141.0 mm (5.6 in)	59 of 100 (Notable)
Hagerstown 1E	United States	Record daily precipitation	102.1 mm (4.0 in)	58 of 100 (Notable)
London State Fish Hatchery	United States	Record daily precipitation	65.3 mm (2.6 in)	58 of 100 (Notable)
Gassaway	United States	Record daily precipitation	73.7 mm (2.9 in)	58 of 100 (Notable)
Mulgrave Mill	Australia	Record daily precipitation	89.0 mm (3.5 in)	56 of 100 (Notable)
Zaragoza Aeropuerto	Spain	Record daily precipitation	36.8 mm (1.4 in)	56 of 100 (Notable)
Pinetop 2E	United States	Record daily precipitation	55.9 mm (2.2 in)	56 of 100 (Notable)
Loyalhanna Lake	United States	Record daily precipitation	72.4 mm (2.9 in)	56 of 100 (Notable)
Teterboro AP	United States	Record daily precipitation	177.0 mm (7.0 in)	56 of 100 (Notable)
Bridgeport 5 NW	United States	Record daily precipitation	72.9 mm (2.9 in)	55 of 100 (Notable)
Murphy 4ESE	United States	Record daily precipitation	74.9 mm (2.9 in)	55 of 100 (Notable)
Evelyn State Forest	Australia	Record daily precipitation	26.8 mm (1.1 in)	54 of 100 (Notable)
Shilka	Russia	Record daily precipitation	30.0 mm (1.2 in)	54 of 100 (Notable)
Pittsburgh Allegheny Co AP	United States	Record daily precipitation	57.9 mm (2.3 in)	54 of 100 (Notable)
Lancaster 2 NE Filt Plt	United States	Record daily precipitation	134.6 mm (5.3 in)	53 of 100 (Notable)
Bellenden Ker Bottom STN	Australia	Record daily precipitation	221.0 mm (8.7 in)	52 of 100 (Notable)
Wilmington Porter Rsch	United States	Record daily precipitation	83.3 mm (3.3 in)	52 of 100 (Notable)
Wildcat	United States	Record daily precipitation	45.7 mm (1.8 in)	52 of 100 (Notable)
Wilkes-Barre/Scranton Intl AP	United States	Record daily precipitation	129.3 mm (5.1 in)	52 of 100 (Notable)
Mount Surprise Township	Australia	Record daily precipitation	35.5 mm (1.4 in)	51 of 100 (Notable)
Wolfsburg	United States	Record daily precipitation	71.4 mm (2.8 in)	50 of 100 (Notable)
Meringa Sugar Exp STN	Australia	Record daily precipitation	93.0 mm (3.7 in)	49 of 100 (Notable)
Saint Ignatius	United States	Record low minimum temperature	-3.9 C (25.0 F)	49 of 100 (Notable)
Gordon 6N	United States	Record daily precipitation	29.2 mm (1.1 in)	49 of 100 (Notable)
Cerepovec	Russia	Record daily precipitation	32.0 mm (1.3 in)	48 of 100 (Notable)
Franklin	United States	Record daily precipitation	50.8 mm (2.0 in)	48 of 100 (Notable)
Lenoir City	United States	Record daily precipitation	90.4 mm (3.6 in)	48 of 100 (Notable)
Belozersk	Russia	Record daily precipitation	32.0 mm (1.3 in)	47 of 100 (Notable)
Ko Samui	Thailand	Record daily precipitation	56.4 mm (2.2 in)	47 of 100 (Notable)
Martinsburg E W Virginia Rgnl	United States	Record daily precipitation	92.5 mm (3.6 in)	47 of 100 (Notable)
Greenhaven	Australia	Record daily precipitation	65.4 mm (2.6 in)	46 of 100 (Notable)
Altoona 3 W	United States	Record daily precipitation	82.6 mm (3.3 in)	46 of 100 (Notable)
Octoraro Lake	United States	Record daily precipitation	156.2 mm (6.1 in)	46 of 100 (Notable)
Zinder	Niger	Record high maximum temperature	40.0 C (104.0 F)	45 of 100 (Notable)
Blairsville Exp STN	United States	Record daily precipitation	89.7 mm (3.5 in)	45 of 100 (Notable)
Salina 3 W	United States	Record daily precipitation	66.5 mm (2.6 in)	45 of 100 (Notable)
Norris	United States	Record daily precipitation	86.4 mm (3.4 in)	45 of 100 (Notable)
Escalante	United States	Record daily precipitation	36.3 mm (1.4 in)	45 of 100 (Notable)

Counts by Type and Timescale

751 records

Records set or tied on 1 September 2021 by type: Highest daily maximum 108, Lowest daily maximum 78, Highest daily minimum 195, Lowest daily minimum 60, Heaviest daily rainfall 309, Deepest snow cover 1.

Records on 1 September 2021 by type
Record type	Records
Highest daily maximum	108
Lowest daily maximum	78
Highest daily minimum	195
Lowest daily minimum	60
Heaviest daily rainfall	309
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 1 September 2021 by timescale: all-time 2, monthly 28, daily 721.

How Much Records Were Beaten By

601 broken records

Margins by which the 601 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 157.2. Ties are not counted.

Top 20 by Significance

1 September 2021

Top 20 records on 1 September 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 2021	Irvinebank, AU	daily rain	41.2 mm (1.6 in)	37.6 mm (1.5 in)	107 years	80 of 100 (Exceptional)
1 September 2021	Ny City Cntrl Park, US	daily rain	181.1 mm (7.1 in)	83.6 mm (3.3 in)	94 years	78 of 100 (Major)
1 September 2021	Daroca, ES	all-time rain	95.2 mm (3.7 in)	14.2 mm (0.6 in)	98 years	77 of 100 (Major)
1 September 2021	E Stroudsburg, US	daily rain	120.7 mm (4.8 in)	97.8 mm (3.9 in)	67 years	70 of 100 (Major)
1 September 2021	Hartford Brainard Fld, US	daily rain	112.5 mm (4.4 in)	89.4 mm (3.5 in)	68 years	70 of 100 (Major)
1 September 2021	Danbury, US	daily rain	146.3 mm (5.8 in)	96.0 mm (3.8 in)	68 years	68 of 100 (Major)
1 September 2021	Middletown Harrisburg Intl AP, US	daily rain	168.7 mm (6.6 in)	95.5 mm (3.8 in)	68 years	68 of 100 (Major)
1 September 2021	Newark Liberty Intl AP, US	daily rain	213.6 mm (8.4 in)	157.2 mm (6.2 in)	62 years	68 of 100 (Major)
1 September 2021	Altoona Blair Co AP, US	daily rain	132.3 mm (5.2 in)	103.1 mm (4.1 in)	68 years	67 of 100 (Major)
1 September 2021	Hartford-Bradley Intl AP, US	daily rain	103.4 mm (4.1 in)	69.9 mm (2.8 in)	68 years	67 of 100 (Major)
1 September 2021	New Haven Tweed AP, US	daily rain	100.8 mm (4.0 in)	78.2 mm (3.1 in)	68 years	67 of 100 (Major)
1 September 2021	Upper Barron, AU	monthly rain	74.0 mm (2.9 in)	25.6 mm (1.0 in)	45 years	66 of 100 (Major)
1 September 2021	Bear Gap, US	daily rain	146.8 mm (5.8 in)	71.9 mm (2.8 in)	68 years	66 of 100 (Major)
1 September 2021	Poughkeepsie AP, US	monthly rain	141.5 mm (5.6 in)	45.7 mm (1.8 in)	54 years	65 of 100 (Major)
1 September 2021	Mt Sophia, AU	monthly rain	233.0 mm (9.2 in)	145.0 mm (5.7 in)	32 years	64 of 100 (Major)
1 September 2021	Newark Ag Farm, US	daily rain	113.5 mm (4.5 in)	66.3 mm (2.6 in)	68 years	64 of 100 (Major)
1 September 2021	Boulder, US	daily rain	43.7 mm (1.7 in)	29.2 mm (1.1 in)	60 years	62 of 100 (Major)
1 September 2021	Neshaminy Falls, US	daily rain	106.4 mm (4.2 in)	48.2 mm (1.9 in)	80 years	61 of 100 (Major)
1 September 2021	South Johnstone Exp STN, AU	daily rain	66.0 mm (2.6 in)	31.7 mm (1.2 in)	70 years	60 of 100 (Major)
1 September 2021	Newnan 7 WNW, US	daily rain	79.8 mm (3.1 in)	49.3 mm (1.9 in)	68 years	60 of 100 (Major)

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

1797 to 2021

Records set or tied on this calendar date in each year from 1797 to 2021. 2021 had 751 records.

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

Records on 09-01 in each year
Year	Records
1797	1
1806	1
1819	1
1827	1
1831	1
1838	1
1851	1
1853	1
1854	1
1857	1
1858	1
1859	1
1860	2
1861	1
1865	1
1866	1
1867	2
1869	3
1871	1
1873	1
1876	2
1877	2
1878	3
1879	2
1881	5
1883	1
1886	3
1887	3
1888	2
1890	2
1892	2
1894	3
1897	4
1898	10
1899	3
1900	2
1901	14
1902	5
1903	16
1904	9
1905	6
1906	26
1907	14
1908	26
1909	34
1910	22
1911	16
1912	47
1913	32
1914	23
1915	46
1916	16
1917	24
1918	31
1919	19
1920	31
1921	46
1922	67
1923	75
1924	210
1925	127
1926	182
1927	136
1928	166
1929	324
1930	264
1931	233
1932	550
1933	622
1934	654
1935	584
1936	385
1937	502
1938	373
1939	303
1940	333
1941	497
1942	532
1943	578
1944	377
1945	497
1946	642
1947	555
1948	460
1949	1,102
1950	849
1951	668
1952	644
1953	937
1954	407
1955	413
1956	504
1957	320
1958	427
1959	519
1960	408
1961	531
1962	368
1963	416
1964	621
1965	657
1966	596
1967	1,263
1968	604
1969	493
1970	502
1971	464
1972	518
1973	874
1974	895
1975	939
1976	627
1977	500
1978	809
1979	459
1980	671
1981	649
1982	642
1983	1,167
1984	619
1985	901
1986	964
1987	909
1988	651
1989	823
1990	749
1991	687
1992	1,010
1993	1,122
1994	1,291
1995	1,165
1996	823
1997	1,161
1998	1,159
1999	925
2000	1,613
2001	904
2002	778
2003	1,254
2004	827
2005	901
2006	1,157
2007	976
2008	1,204
2009	1,003
2010	1,313
2011	1,071
2012	874
2013	775
2014	515
2015	661
2016	522
2017	686
2018	399
2019	800
2020	689
2021	751
2022	1,016
2023	720
2024	938
2025	359
2026	521

Download the Data

Data for records on 2021-09-01: 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	512
20 to 40	46
40 to 60	23
60 to 80	8
80 to 100	6
100 to 120	2
120 to 140	2
140 to 160	2