Weather Records on 1 September 1981

649 weather records were set or tied worldwide on 1 September 1981. Highest significance: Iola 1 W, US.

Key Facts for 1 September 1981

On 1 September 1981, 649 weather records were set or tied at long-record stations worldwide.
237 were record highs and 133 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 50 monthly and 595 daily.
Iola 1 W set a daily record precipitation of 132.1 mm (5.2 in) on 1 September 1981.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 440 records.

Record Map

649 stations

649 station records on 1 September 1981 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 September 1981: highest significance records shown on the map
Station	Country	Type	Value	Significance
Iola 1 W	United States	Record daily precipitation	132.1 mm (5.2 in)	65 of 100 (Major)
Tomball	United States	Record daily precipitation	268.5 mm (10.6 in)	64 of 100 (Major)
Ft Valley	United States	Record daily precipitation	65.3 mm (2.6 in)	61 of 100 (Major)
Stover	United States	Record daily precipitation	78.7 mm (3.1 in)	53 of 100 (Notable)
Houston Barker	United States	Record daily precipitation	117.3 mm (4.6 in)	52 of 100 (Notable)
Portage Wwtp	United States	Record daily precipitation	70.9 mm (2.8 in)	50 of 100 (Notable)
Gogland	Russia	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Kem-Port	Russia	Record daily precipitation	30.5 mm (1.2 in)	45 of 100 (Notable)
Biser	Russia	Record high minimum temperature	15.7 C (60.3 F)	45 of 100 (Notable)
Houston N Houston	United States	Record daily precipitation	92.7 mm (3.6 in)	45 of 100 (Notable)
Hartford Wwtp	United States	Record daily precipitation	27.9 mm (1.1 in)	44 of 100 (Notable)
Stoughton Wwtp	United States	Record daily precipitation	128.3 mm (5.1 in)	44 of 100 (Notable)
Cordell	United States	Record daily precipitation	86.4 mm (3.4 in)	43 of 100 (Notable)
Alvin	United States	Record daily precipitation	140.2 mm (5.5 in)	43 of 100 (Notable)
Montague 4 NW	United States	Record daily precipitation	27.2 mm (1.1 in)	42 of 100 (Notable)
Hallettsville 2 N	United States	Record daily precipitation	63.2 mm (2.5 in)	42 of 100 (Notable)
Okeene	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Flatonia 4SE	United States	Record daily precipitation	90.9 mm (3.6 in)	41 of 100 (Notable)
Rolla Missouri S&T	United States	Record daily precipitation	73.9 mm (2.9 in)	40 of 100 (Notable)
Houston-Westbury	United States	Record daily precipitation	102.9 mm (4.1 in)	39 of 100 (Notable)
Watertown Wwtp	United States	Record daily precipitation	55.4 mm (2.2 in)	39 of 100 (Notable)
Shreveport	United States	Record daily precipitation	67.8 mm (2.7 in)	39 of 100 (Notable)
Aktobe	Kazakhstan	Record high minimum temperature	20.2 C (68.4 F)	38 of 100 (Notable)
Visby_Flygplats	Sweden	Record low maximum temperature	11.7 C (53.1 F)	38 of 100 (Notable)
Darlington Wwtp	United States	Record daily precipitation	68.1 mm (2.7 in)	38 of 100 (Notable)
Liberty	United States	Record daily precipitation	70.6 mm (2.8 in)	37 of 100 (Notable)
Zagreb-Gric	Croatia	Record daily precipitation	25.9 mm (1.0 in)	36 of 100 (Notable)
Dayton 1 N	United States	Record daily precipitation	57.7 mm (2.3 in)	36 of 100 (Notable)
Arkabutla Dam	United States	Record daily precipitation	75.2 mm (3.0 in)	36 of 100 (Notable)
Richmond	United States	Record daily precipitation	64.8 mm (2.6 in)	36 of 100 (Notable)
Schulenburg	United States	Record daily precipitation	70.6 mm (2.8 in)	36 of 100 (Notable)
Dodgeville Wwtp	United States	Record daily precipitation	67.3 mm (2.6 in)	36 of 100 (Notable)
Byhalia	United States	Record daily precipitation	85.6 mm (3.4 in)	35 of 100 (Notable)
Anadarko 3 E	United States	Record daily precipitation	65.5 mm (2.6 in)	35 of 100 (Notable)
Petawawa Nat Forestry	Canada	Record daily precipitation	38.6 mm (1.5 in)	34 of 100 (Routine)
Wenzhou	China	Record high minimum temperature	28.8 C (83.8 F)	34 of 100 (Routine)
Richwoods	United States	Record daily precipitation	68.6 mm (2.7 in)	34 of 100 (Routine)
Sheenboro	Canada	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	13.5 C (56.3 F)	33 of 100 (Routine)
Basel-Mulhouse	France	Record daily precipitation	37.3 mm (1.5 in)	33 of 100 (Routine)
Dumas	United States	Record daily precipitation	108.0 mm (4.3 in)	33 of 100 (Routine)
Springview 2NW	United States	Record low minimum temperature	3.9 C (39.0 F)	33 of 100 (Routine)
Liberty	United States	Record low maximum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Sanderson	United States	Record high maximum temperature	37.8 C (100.0 F)	33 of 100 (Routine)
Goshen	United States	Record daily precipitation	67.1 mm (2.6 in)	33 of 100 (Routine)
Kapuskasing A	Canada	Record daily precipitation	44.8 mm (1.8 in)	32 of 100 (Routine)
Port Stanley	Canada	Record daily precipitation	41.6 mm (1.6 in)	32 of 100 (Routine)
Grand Coteau	United States	Record high minimum temperature	25.0 C (77.0 F)	32 of 100 (Routine)
Greeley	United States	Record low minimum temperature	3.9 C (39.0 F)	32 of 100 (Routine)
Lake Mills Wwtp	United States	Record daily precipitation	52.6 mm (2.1 in)	32 of 100 (Routine)
Lafayette Rgnl AP	United States	Record high minimum temperature	25.0 C (77.0 F)	32 of 100 (Routine)
Konstanz	Germany	Record daily precipitation	29.6 mm (1.2 in)	31 of 100 (Routine)
Zinder	Niger	Record high minimum temperature	26.0 C (78.8 F)	31 of 100 (Routine)
Cherdyn'	Russia	Record high minimum temperature	16.0 C (60.8 F)	31 of 100 (Routine)
Zuerich/Fluntern	Switzerland	Record daily precipitation	32.3 mm (1.3 in)	31 of 100 (Routine)
Yates Ctr	United States	Record daily precipitation	87.6 mm (3.4 in)	31 of 100 (Routine)
Watonga	United States	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Brodhead Wwtp	United States	Record daily precipitation	33.0 mm (1.3 in)	31 of 100 (Routine)
Germantown Wastewater Utility	United States	Record daily precipitation	34.3 mm (1.4 in)	31 of 100 (Routine)
Mtn View 91	United States	Record high maximum temperature	28.9 C (84.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

649 records

Records set or tied on 1 September 1981 by type: Highest daily maximum 66, Lowest daily maximum 64, Highest daily minimum 171, Lowest daily minimum 69, Heaviest daily rainfall 277, Heaviest daily snowfall 2.

Records on 1 September 1981 by type
Record type	Records
Highest daily maximum	66
Lowest daily maximum	64
Highest daily minimum	171
Lowest daily minimum	69
Heaviest daily rainfall	277
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 1 September 1981 by timescale: all-time 4, monthly 50, daily 595.

How Much Records Were Beaten By

525 broken records

Margins by which the 525 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 95.0. Ties are not counted.

Top 20 by Significance

1 September 1981

Top 20 records on 1 September 1981 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 1981	Iola 1 W, US	daily rain	132.1 mm (5.2 in)	84.6 mm (3.3 in)	60 years	65 of 100 (Major)
1 September 1981	Tomball, US	all-time rain	268.5 mm (10.6 in)	95.0 mm (3.7 in)	2 years	64 of 100 (Major)
1 September 1981	Ft Valley, US	daily rain	65.3 mm (2.6 in)	33.5 mm (1.3 in)	56 years	61 of 100 (Major)
1 September 1981	Stover, US	daily rain	78.7 mm (3.1 in)	60.9 mm (2.4 in)	48 years	53 of 100 (Notable)
1 September 1981	Houston Barker, US	daily rain	117.3 mm (4.6 in)	86.6 mm (3.4 in)	32 years	52 of 100 (Notable)
1 September 1981	Portage Wwtp, US	daily rain	70.9 mm (2.8 in)	32.5 mm (1.3 in)	58 years	50 of 100 (Notable)
1 September 1981	Gogland, RU	daily rain	36.8 mm (1.4 in)	9.6 mm (0.38 in)	68 years	47 of 100 (Notable)
1 September 1981	Kem-Port, RU	daily rain	30.5 mm (1.2 in)	11.5 mm (0.5 in)	52 years	45 of 100 (Notable)
1 September 1981	Biser, RU	monthly high min	15.7 C (60.3 F)	0.7 C (1.3 F)	83 years	45 of 100 (Notable)
1 September 1981	Houston N Houston, US	daily rain	92.7 mm (3.6 in)	68.3 mm (2.7 in)	28 years	45 of 100 (Notable)
1 September 1981	Hartford Wwtp, US	daily rain	27.9 mm (1.1 in)	17.7 mm (0.7 in)	83 years	44 of 100 (Notable)
1 September 1981	Stoughton Wwtp, US	all-time rain	128.3 mm (5.1 in)	18.8 mm (0.7 in)	19 years	44 of 100 (Notable)
1 September 1981	Cordell, US	daily rain	86.4 mm (3.4 in)	45.0 mm (1.8 in)	38 years	43 of 100 (Notable)
1 September 1981	Alvin, US	daily rain	140.2 mm (5.5 in)	86.4 mm (3.4 in)	3 years	43 of 100 (Notable)
1 September 1981	Montague 4 NW, US	daily rain	27.2 mm (1.1 in)	14.5 mm (0.6 in)	76 years	42 of 100 (Notable)
1 September 1981	Hallettsville 2 N, US	daily rain	63.2 mm (2.5 in)	19.3 mm (0.8 in)	81 years	42 of 100 (Notable)
1 September 1981	Okeene, US	daily rain	66.0 mm (2.6 in)	25.4 mm (1.0 in)	60 years	41 of 100 (Notable)
1 September 1981	Flatonia 4SE, US	daily rain	90.9 mm (3.6 in)	61.7 mm (2.4 in)	24 years	41 of 100 (Notable)
1 September 1981	Rolla Missouri S&T, US	daily rain	73.9 mm (2.9 in)	47.0 mm (1.9 in)	7 years	40 of 100 (Notable)
1 September 1981	Houston-Westbury, US	daily rain	102.9 mm (4.1 in)	65.8 mm (2.6 in)	12 years	39 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

1797 to 1981

Records set or tied on this calendar date in each year from 1797 to 1981. 1981 had 649 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 1981-09-01: 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	457
20 to 40	43
40 to 60	16
60 to 80	5
80 to 100	4