Weather Records on 4 September 1981

582 weather records were set or tied worldwide on 4 September 1981. Highest significance: Pesaro, IT.

Key Facts for 4 September 1981

On 4 September 1981, 582 weather records were set or tied at long-record stations worldwide.
121 were record highs and 144 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 19 monthly and 559 daily.
Pesaro set an all-time record daily precipitation of 197.3 mm (7.8 in) on 4 September 1981.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 450 records.

Record Map

582 stations

582 station records on 4 September 1981 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 September 1981: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pesaro	Italy	Record daily precipitation	197.3 mm (7.8 in)	70 of 100 (Major)
Bloomfield	Canada	Record daily precipitation	56.8 mm (2.2 in)	69 of 100 (Major)
Lapeer Wwtp	United States	Record daily precipitation	94.5 mm (3.7 in)	62 of 100 (Major)
Sandusky	United States	Record daily precipitation	73.9 mm (2.9 in)	62 of 100 (Major)
Sublette 7WSW	United States	Record daily precipitation	122.2 mm (4.8 in)	59 of 100 (Notable)
Belleville	Canada	Record daily precipitation	46.1 mm (1.8 in)	55 of 100 (Notable)
Orono	Canada	Record daily precipitation	46.2 mm (1.8 in)	54 of 100 (Notable)
Port Dalhousie	Canada	Record daily precipitation	42.2 mm (1.7 in)	51 of 100 (Notable)
Vytegra	Russia	Record daily precipitation	36.3 mm (1.4 in)	51 of 100 (Notable)
Clay	United States	Record daily precipitation	53.8 mm (2.1 in)	51 of 100 (Notable)
Dalhousie L High Falls	Canada	Record daily precipitation	55.0 mm (2.2 in)	50 of 100 (Notable)
Sapporo	Japan	Record daily precipitation	92.5 mm (3.6 in)	49 of 100 (Notable)
Paulding	United States	Record daily precipitation	87.1 mm (3.4 in)	48 of 100 (Notable)
Leesville Lake	United States	Record daily precipitation	77.7 mm (3.1 in)	47 of 100 (Notable)
Redickville	Canada	Record daily precipitation	37.0 mm (1.5 in)	46 of 100 (Notable)
Otaru	Japan	Record daily precipitation	80.5 mm (3.2 in)	46 of 100 (Notable)
Suttsu	Japan	Record daily precipitation	90.5 mm (3.6 in)	46 of 100 (Notable)
Yale 1 NNW	United States	Record daily precipitation	54.6 mm (2.1 in)	46 of 100 (Notable)
Omu	Japan	Record daily precipitation	72.0 mm (2.8 in)	45 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record low minimum temperature	15.6 C (60.1 F)	45 of 100 (Notable)
Paisley	United Kingdom	Record daily precipitation	39.8 mm (1.6 in)	45 of 100 (Notable)
Harbor Beach 1 SSE	United States	Record daily precipitation	105.7 mm (4.2 in)	45 of 100 (Notable)
Clendening Lake	United States	Record daily precipitation	65.5 mm (2.6 in)	45 of 100 (Notable)
Lewisburg 3 N	United States	Record daily precipitation	57.2 mm (2.3 in)	45 of 100 (Notable)
Toronto	Canada	Record daily precipitation	28.6 mm (1.1 in)	44 of 100 (Notable)
Williamston 3NE	United States	Record daily precipitation	25.4 mm (1.0 in)	43 of 100 (Notable)
Tappan Dam	United States	Record daily precipitation	127.8 mm (5.0 in)	43 of 100 (Notable)
Woodbridge	Canada	Record daily precipitation	40.6 mm (1.6 in)	42 of 100 (Notable)
Ballyshannon (Cathleens Fall)	Ireland	Record daily precipitation	27.1 mm (1.1 in)	42 of 100 (Notable)
House	United States	Record daily precipitation	42.9 mm (1.7 in)	42 of 100 (Notable)
Port Hope	Canada	Record daily precipitation	39.7 mm (1.6 in)	41 of 100 (Notable)
Juzhno-Kurilsk	Russia	Record daily precipitation	116.0 mm (4.6 in)	41 of 100 (Notable)
Millington 3 SE	United States	Record daily precipitation	57.2 mm (2.3 in)	41 of 100 (Notable)
Wauseon Wtp	United States	Record daily precipitation	79.2 mm (3.1 in)	41 of 100 (Notable)
Bologna	Italy	Record daily precipitation	46.0 mm (1.8 in)	40 of 100 (Notable)
Micurinsk	Russia	Record daily precipitation	27.8 mm (1.1 in)	40 of 100 (Notable)
Mt Airy 2 W	United States	Record daily precipitation	94.0 mm (3.7 in)	40 of 100 (Notable)
Howell Wwtp	United States	Record daily precipitation	61.2 mm (2.4 in)	39 of 100 (Notable)
Galway	Ireland	Record high minimum temperature	17.0 C (62.6 F)	38 of 100 (Notable)
Fukaura	Japan	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Sebewaing	United States	Record daily precipitation	41.9 mm (1.6 in)	38 of 100 (Notable)
Union 3 SSE	United States	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Sheenboro	Canada	Record daily precipitation	46.4 mm (1.8 in)	37 of 100 (Notable)
Obihiro	Japan	Record daily precipitation	69.5 mm (2.7 in)	37 of 100 (Notable)
Armagh	United Kingdom	Record high minimum temperature	16.8 C (62.2 F)	37 of 100 (Notable)
Brundidge	United States	Record daily precipitation	109.7 mm (4.3 in)	37 of 100 (Notable)
Cameron	United States	Record daily precipitation	69.9 mm (2.8 in)	37 of 100 (Notable)
Glenville	United States	Record daily precipitation	38.9 mm (1.5 in)	37 of 100 (Notable)
Uil	Kazakhstan	Record high minimum temperature	20.7 C (69.3 F)	36 of 100 (Notable)
Prachuap Khiri Khan	Thailand	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Woodville 4 ESE	United States	Record daily precipitation	47.0 mm (1.9 in)	36 of 100 (Notable)
Glen Lyn	United States	Record daily precipitation	47.2 mm (1.9 in)	36 of 100 (Notable)
Kutchan	Japan	Record daily precipitation	69.5 mm (2.7 in)	35 of 100 (Notable)
Carrollton 3 NNE	United States	Record daily precipitation	56.9 mm (2.2 in)	35 of 100 (Notable)
Spearman	United States	Record daily precipitation	69.3 mm (2.7 in)	35 of 100 (Notable)
Osijek	Croatia	Record daily precipitation	25.3 mm (1.0 in)	34 of 100 (Routine)
Logan	United States	Record daily precipitation	25.7 mm (1.0 in)	34 of 100 (Routine)
Madison 3NNW	United States	Record daily precipitation	33.8 mm (1.3 in)	34 of 100 (Routine)
Madawaska	Canada	Record daily precipitation	55.8 mm (2.2 in)	33 of 100 (Routine)
Smithfield Cda	Canada	Record daily precipitation	32.8 mm (1.3 in)	33 of 100 (Routine)

Counts by Type and Timescale

582 records

Records set or tied on 4 September 1981 by type: Highest daily maximum 30, Lowest daily maximum 57, Highest daily minimum 91, Lowest daily minimum 87, Heaviest daily rainfall 315, Heaviest daily snowfall 2.

Records on 4 September 1981 by type
Record type	Records
Highest daily maximum	30
Lowest daily maximum	57
Highest daily minimum	91
Lowest daily minimum	87
Heaviest daily rainfall	315
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 4 September 1981 by timescale: all-time 4, monthly 19, daily 559.

How Much Records Were Beaten By

497 broken records

Margins by which the 497 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.3. Ties are not counted.

Top 20 by Significance

4 September 1981

Top 20 records on 4 September 1981 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 September 1981	Pesaro, IT	all-time rain	197.3 mm (7.8 in)	55.1 mm (2.2 in)	1 year	70 of 100 (Major)
4 September 1981	Bloomfield, CA	daily rain	56.8 mm (2.2 in)	40.3 mm (1.6 in)	72 years	69 of 100 (Major)
4 September 1981	Lapeer Wwtp, US	monthly rain	94.5 mm (3.7 in)	42.4 mm (1.7 in)	30 years	62 of 100 (Major)
4 September 1981	Sandusky, US	monthly rain	73.9 mm (2.9 in)	23.1 mm (0.9 in)	61 years	62 of 100 (Major)
4 September 1981	Sublette 7WSW, US	daily rain	122.2 mm (4.8 in)	78.3 mm (3.1 in)	44 years	59 of 100 (Notable)
4 September 1981	Belleville, CA	daily rain	46.1 mm (1.8 in)	34.4 mm (1.4 in)	42 years	55 of 100 (Notable)
4 September 1981	Orono, CA	daily rain	46.2 mm (1.8 in)	34.0 mm (1.3 in)	42 years	54 of 100 (Notable)
4 September 1981	Port Dalhousie, CA	daily rain	42.2 mm (1.7 in)	33.3 mm (1.3 in)	15 years	51 of 100 (Notable)
4 September 1981	Vytegra, RU	daily rain	36.3 mm (1.4 in)	14.6 mm (0.6 in)	51 years	51 of 100 (Notable)
4 September 1981	Clay, US	daily rain	53.8 mm (2.1 in)	35.0 mm (1.4 in)	60 years	51 of 100 (Notable)
4 September 1981	Dalhousie L High Falls, CA	daily rain	55.0 mm (2.2 in)	34.9 mm (1.4 in)	28 years	50 of 100 (Notable)
4 September 1981	Sapporo, JP	daily rain	92.5 mm (3.6 in)	70.7 mm (2.8 in)	20 years	49 of 100 (Notable)
4 September 1981	Paulding, US	daily rain	87.1 mm (3.4 in)	49.0 mm (1.9 in)	15 years	48 of 100 (Notable)
4 September 1981	Leesville Lake, US	daily rain	77.7 mm (3.1 in)	65.0 mm (2.6 in)	15 years	47 of 100 (Notable)
4 September 1981	Redickville, CA	daily rain	37.0 mm (1.5 in)	30.1 mm (1.2 in)	28 years	46 of 100 (Notable)
4 September 1981	Otaru, JP	daily rain	80.5 mm (3.2 in)	66.5 mm (2.6 in)	10 years	46 of 100 (Notable)
4 September 1981	Suttsu, JP	daily rain	90.5 mm (3.6 in)	60.5 mm (2.4 in)	10 years	46 of 100 (Notable)
4 September 1981	Yale 1 NNW, US	daily rain	54.6 mm (2.1 in)	27.9 mm (1.1 in)	44 years	46 of 100 (Notable)
4 September 1981	Omu, JP	daily rain	72.0 mm (2.8 in)	53.5 mm (2.1 in)	8 years	45 of 100 (Notable)
4 September 1981	Manati 2 E, PR	monthly low min	15.6 C (60.1 F)	1.1 C (2.0 F)	55 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

1802 to 1981

Records set or tied on this calendar date in each year from 1802 to 1981. 1981 had 582 records.

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

Records on 09-04 in each year
Year	Records
1802	1
1805	1
1823	1
1833	1
1837	1
1839	1
1845	1
1847	1
1850	1
1854	1
1856	1
1857	1
1858	1
1861	1
1863	1
1864	1
1867	1
1868	1
1869	2
1871	1
1872	4
1874	1
1875	1
1877	1
1880	4
1881	1
1883	2
1885	3
1887	1
1888	2
1889	1
1890	1
1891	5
1894	4
1895	6
1896	1
1897	4
1898	9
1899	4
1900	1
1901	4
1902	4
1903	2
1904	7
1905	18
1906	16
1907	22
1908	9
1909	23
1910	91
1911	25
1912	29
1913	29
1914	19
1915	37
1916	24
1917	40
1918	96
1919	48
1920	105
1921	105
1922	62
1923	325
1924	167
1925	339
1926	256
1927	68
1928	341
1929	371
1930	102
1931	477
1932	429
1933	424
1934	393
1935	514
1936	309
1937	411
1938	236
1939	434
1940	287
1941	528
1942	323
1943	472
1944	341
1945	542
1946	431
1947	618
1948	409
1949	370
1950	642
1951	404
1952	645
1953	869
1954	372
1955	465
1956	586
1957	250
1958	384
1959	316
1960	552
1961	909
1962	733
1963	443
1964	507
1965	611
1966	428
1967	786
1968	546
1969	510
1970	644
1971	717
1972	513
1973	530
1974	2,279
1975	432
1976	582
1977	386
1978	940
1979	461
1980	355
1981	582
1982	617
1983	1,040
1984	1,107
1985	915
1986	663
1987	685
1988	1,259
1989	681
1990	787
1991	708
1992	1,132
1993	859
1994	1,001
1995	1,287
1996	907
1997	1,452
1998	1,564
1999	1,479
2000	1,336
2001	833
2002	767
2003	1,094
2004	898
2005	998
2006	1,268
2007	1,077
2008	1,335
2009	914
2010	1,804
2011	1,310
2012	1,209
2013	630
2014	461
2015	893
2016	597
2017	881
2018	758
2019	616
2020	957
2021	544
2022	1,256
2023	1,290
2024	985
2025	635
2026	1,222

Download the Data

Data for records on 1981-09-04: 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 10	352
10 to 20	69
20 to 30	37
30 to 40	18
40 to 50	10
50 to 60	5
60 to 70	4
70 to 80	2