Weather Records on 1 September 1991

687 weather records were set or tied worldwide on 1 September 1991. Highest significance: Verhnjaja Gutara, RU.

Key Facts for 1 September 1991

On 1 September 1991, 687 weather records were set or tied at long-record stations worldwide.
447 were record highs and 143 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 107 monthly and 579 daily.
Verhnjaja Gutara set a daily record precipitation of 41.4 mm (1.6 in) on 1 September 1991.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 440 records.

Record Map

687 stations

687 station records on 1 September 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 September 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Verhnjaja Gutara	Russia	Record daily precipitation	41.4 mm (1.6 in)	60 of 100 (Major)
Kamyslov	Russia	Record daily precipitation	32.8 mm (1.3 in)	51 of 100 (Notable)
Ronaldsway	United Kingdom	Record high maximum temperature	26.5 C (79.7 F)	47 of 100 (Notable)
Corozal Substn	Puerto Rico [United States]	Record low minimum temperature	16.1 C (61.0 F)	46 of 100 (Notable)
Big Timber	United States	Record high minimum temperature	20.0 C (68.0 F)	44 of 100 (Notable)
Chester	United States	Record high minimum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Atbasar	Kazakhstan	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Cornwall	United States	Record low maximum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Ft Benton	United States	Record high minimum temperature	20.6 C (69.1 F)	40 of 100 (Notable)
Duchesne	United States	Record high minimum temperature	16.7 C (62.1 F)	40 of 100 (Notable)
Ft Assiniboine	United States	Record high minimum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Biloxi	United States	Record low maximum temperature	26.1 C (79.0 F)	38 of 100 (Notable)
Lockport 2SE	United States	Record low minimum temperature	6.1 C (43.0 F)	38 of 100 (Notable)
Kemchug	Russia	Record daily precipitation	33.3 mm (1.3 in)	37 of 100 (Notable)
Caldwell	United States	Record high minimum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Priest Rvr Exp STN	United States	Record high minimum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Morgan City	United States	Record daily precipitation	73.2 mm (2.9 in)	37 of 100 (Notable)
Cascade 5 S	United States	Record high minimum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Glendive	United States	Record high minimum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Caliente	United States	Record low maximum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Lhasa	China	Record daily precipitation	26.4 mm (1.0 in)	36 of 100 (Notable)
Dos Bocas	Puerto Rico [United States]	Record daily precipitation	77.5 mm (3.1 in)	36 of 100 (Notable)
Kondoma	Russia	Record daily precipitation	33.1 mm (1.3 in)	36 of 100 (Notable)
Auburn	United States	Record low minimum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
Ludington 4 SE	United States	Record low minimum temperature	3.9 C (39.0 F)	35 of 100 (Notable)
Medicine Lake 3 SE	United States	Record high minimum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Aginskoe	Russia	Record daily precipitation	35.7 mm (1.4 in)	34 of 100 (Routine)
Istanbul	Turkey	Record low maximum temperature	17.6 C (63.7 F)	34 of 100 (Routine)
Casa Grande Nm	United States	Record low maximum temperature	33.3 C (91.9 F)	34 of 100 (Routine)
Arkadelphia 2 N	United States	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Hebgen Dam	United States	Record high minimum temperature	11.1 C (52.0 F)	34 of 100 (Routine)
Simpson 6 N - Wildhorse	United States	Record high minimum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Meeker 5 W	United States	Record daily precipitation	35.3 mm (1.4 in)	34 of 100 (Routine)
Heber	United States	Record high minimum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Den Helder-1	Netherlands	Record high maximum temperature	26.5 C (79.7 F)	33 of 100 (Routine)
Chester	United States	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Melstone	United States	Record high minimum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Crosby	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Yemassee 1 N	United States	Record high maximum temperature	37.8 C (100.0 F)	33 of 100 (Routine)
Olinala (Smn)	Mexico	Record daily precipitation	51.8 mm (2.0 in)	32 of 100 (Routine)
Temascal	Mexico	Record high maximum temperature	37.8 C (100.0 F)	32 of 100 (Routine)
Moorcroft 3S	United States	Record high maximum temperature	35.6 C (96.1 F)	32 of 100 (Routine)
Culbertson	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
London Locks	United States	Record high minimum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Old Faithful	United States	Record high maximum temperature	27.8 C (82.0 F)	31 of 100 (Routine)
Billings Intl AP	United States	Record high minimum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Williston Sloulin Fld	United States	Record high minimum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Sveg	Sweden	Record high maximum temperature	27.4 C (81.3 F)	30 of 100 (Routine)
Broadus	United States	Record high minimum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Holter Dam	United States	Record high minimum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Tiber Dam	United States	Record high minimum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Fremont 5 NW	United States	Record high minimum temperature	10.0 C (50.0 F)	30 of 100 (Routine)
Beaver Falls	United States	Record low minimum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Le Bourget	France	Record high minimum temperature	18.8 C (65.8 F)	29 of 100 (Routine)
San Diego de Alejandria	Mexico	Record high maximum temperature	35.0 C (95.0 F)	29 of 100 (Routine)
Orskar_A	Sweden	Record high maximum temperature	26.0 C (78.8 F)	29 of 100 (Routine)
Hoting	Sweden	Record high maximum temperature	23.1 C (73.6 F)	29 of 100 (Routine)
Glenlee	United Kingdom	Record high maximum temperature	25.7 C (78.3 F)	29 of 100 (Routine)
Canal Pt USDA	United States	Record low minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Augusta	United States	Record high minimum temperature	18.9 C (66.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

687 records

Records set or tied on 1 September 1991 by type: Highest daily maximum 227, Lowest daily maximum 74, Highest daily minimum 220, Lowest daily minimum 69, Heaviest daily rainfall 97.

Records on 1 September 1991 by type
Record type	Records
Highest daily maximum	227
Lowest daily maximum	74
Highest daily minimum	220
Lowest daily minimum	69
Heaviest daily rainfall	97
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 September 1991 by timescale: all-time 1, monthly 107, daily 579.

How Much Records Were Beaten By

478 broken records

Margins by which the 478 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 40.6. Ties are not counted.

Top 20 by Significance

1 September 1991

Top 20 records on 1 September 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 1991	Verhnjaja Gutara, RU	daily rain	41.4 mm (1.6 in)	27.0 mm (1.1 in)	50 years	60 of 100 (Major)
1 September 1991	Kamyslov, RU	daily rain	32.8 mm (1.3 in)	26.7 mm (1.1 in)	20 years	51 of 100 (Notable)
1 September 1991	Ronaldsway, GB	monthly high max	26.5 C (79.7 F)	4.4 C (7.9 F)	17 years	47 of 100 (Notable)
1 September 1991	Corozal Substn, PR	daily low min	16.1 C (61.0 F)	2.8 C (5.0 F)	54 years	46 of 100 (Notable)
1 September 1991	Big Timber, US	monthly high min	20.0 C (68.0 F)	1.7 C (3.1 F)	71 years	44 of 100 (Notable)
1 September 1991	Chester, US	monthly high min	22.8 C (73.0 F)	5.0 C (9.0 F)	43 years	43 of 100 (Notable)
1 September 1991	Atbasar, KZ	monthly high min	18.3 C (64.9 F)	2.0 C (3.6 F)	60 years	41 of 100 (Notable)
1 September 1991	Cornwall, US	daily low max	15.6 C (60.1 F)	2.2 C (4.0 F)	95 years	41 of 100 (Notable)
1 September 1991	Ft Benton, US	monthly high min	20.6 C (69.1 F)	2.8 C (5.0 F)	52 years	40 of 100 (Notable)
1 September 1991	Duchesne, US	monthly high min	16.7 C (62.1 F)	1.1 C (2.0 F)	66 years	40 of 100 (Notable)
1 September 1991	Ft Assiniboine, US	monthly high min	21.7 C (71.1 F)	3.9 C (7.0 F)	43 years	39 of 100 (Notable)
1 September 1991	Biloxi, US	daily low max	26.1 C (79.0 F)	0.6 C (1.1 F)	91 years	38 of 100 (Notable)
1 September 1991	Lockport 2SE, US	daily low min	6.1 C (43.0 F)	0.6 C (1.1 F)	94 years	38 of 100 (Notable)
1 September 1991	Kemchug, RU	monthly rain	33.3 mm (1.3 in)	4.8 mm (0.19 in)	35 years	37 of 100 (Notable)
1 September 1991	Caldwell, US	daily high min	20.0 C (68.0 F)	2.2 C (4.0 F)	81 years	37 of 100 (Notable)
1 September 1991	Priest Rvr Exp STN, US	daily high min	14.4 C (57.9 F)	0.5 C (0.9 F)	91 years	37 of 100 (Notable)
1 September 1991	Morgan City, US	daily rain	73.2 mm (2.9 in)	23.9 mm (0.9 in)	62 years	37 of 100 (Notable)
1 September 1991	Cascade 5 S, US	monthly high min	21.7 C (71.1 F)	1.1 C (2.0 F)	59 years	37 of 100 (Notable)
1 September 1991	Glendive, US	daily high min	21.7 C (71.1 F)	3.9 C (7.0 F)	69 years	37 of 100 (Notable)
1 September 1991	Caliente, US	daily low max	21.7 C (71.1 F)	2.7 C (4.9 F)	77 years	37 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 1991

Records set or tied on this calendar date in each year from 1797 to 1991. 1991 had 687 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 1991-09-01: 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 10	445
10 to 20	23
20 to 30	8
30 to 40	1
40 to 50	1