Weather Records on 11 September 2021

851 weather records were set or tied worldwide on 11 September 2021. Highest significance: Dandong, CN.

Key Facts for 11 September 2021

On 11 September 2021, 851 weather records were set or tied at long-record stations worldwide.
721 were record highs and 46 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 20 monthly and 831 daily.
Dandong set a daily record precipitation of 103.9 mm (4.1 in) on 11 September 2021.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 421 records.

Record Map

851 stations

851 station records on 11 September 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dandong	China	Record daily precipitation	103.9 mm (4.1 in)	51 of 100 (Notable)
Orje	Norway	Record daily precipitation	33.3 mm (1.3 in)	51 of 100 (Notable)
Danang Intl	Vietnam	Record daily precipitation	284.5 mm (11.2 in)	49 of 100 (Notable)
Poronajsk	Russia	Record daily precipitation	130.0 mm (5.1 in)	47 of 100 (Notable)
Red Rvr	United States	Record high maximum temperature	29.4 C (84.9 F)	47 of 100 (Notable)
Vargarda_D	Sweden	Record daily precipitation	30.0 mm (1.2 in)	46 of 100 (Notable)
Ed	Sweden	Record daily precipitation	31.1 mm (1.2 in)	46 of 100 (Notable)
Manassa	United States	Record high maximum temperature	31.1 C (88.0 F)	46 of 100 (Notable)
Lahore City	Pakistan	Record daily precipitation	96.0 mm (3.8 in)	45 of 100 (Notable)
Aerop.Internacional	Mexico	Record daily precipitation	97.8 mm (3.9 in)	44 of 100 (Notable)
Ft Collins	United States	Record high maximum temperature	35.6 C (96.1 F)	44 of 100 (Notable)
Steamboat Springs	United States	Record high maximum temperature	32.2 C (90.0 F)	44 of 100 (Notable)
Cody	United States	Record high minimum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Stollet_D	Sweden	Record daily precipitation	28.8 mm (1.1 in)	43 of 100 (Notable)
Glenwood Spgs #2	United States	Record high maximum temperature	34.4 C (93.9 F)	43 of 100 (Notable)
Huntley Exp STN	United States	Record high minimum temperature	13.3 C (55.9 F)	43 of 100 (Notable)
Hooker	United States	Record high maximum temperature	41.1 C (106.0 F)	43 of 100 (Notable)
Lead	United States	Record high maximum temperature	32.8 C (91.0 F)	43 of 100 (Notable)
Dull Ctr 1SE	United States	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
On	Sweden	Record daily precipitation	34.5 mm (1.4 in)	42 of 100 (Notable)
Canon City	United States	Record high maximum temperature	36.1 C (97.0 F)	42 of 100 (Notable)
Ft Lewis	United States	Record high maximum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
Fruita	United States	Record high maximum temperature	35.0 C (95.0 F)	42 of 100 (Notable)
Elkhart	United States	Record high maximum temperature	38.9 C (102.0 F)	42 of 100 (Notable)
Lakin	United States	Record high maximum temperature	40.0 C (104.0 F)	42 of 100 (Notable)
Beaumont City	United States	Record low minimum temperature	13.9 C (57.0 F)	42 of 100 (Notable)
Vernal	United States	Record high maximum temperature	32.8 C (91.0 F)	42 of 100 (Notable)
Goodland	United States	Record high maximum temperature	38.9 C (102.0 F)	42 of 100 (Notable)
Munsingen-Apfelstetten	Germany	Record daily precipitation	28.9 mm (1.1 in)	41 of 100 (Notable)
Torungen Fyr	Norway	Record high minimum temperature	16.6 C (61.9 F)	41 of 100 (Notable)
Lamar	United States	Record high maximum temperature	38.9 C (102.0 F)	41 of 100 (Notable)
Wallace	United States	Record high maximum temperature	39.4 C (102.9 F)	41 of 100 (Notable)
Heron 2 NW	United States	Record high minimum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Colville	United States	Record high minimum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Old Faithful	United States	Record high maximum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Oksoey Fyr	Norway	Record high minimum temperature	16.4 C (61.5 F)	40 of 100 (Notable)
Burlington	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Healy	United States	Record high maximum temperature	40.0 C (104.0 F)	40 of 100 (Notable)
Tribune 1W	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Culbertson	United States	Record high maximum temperature	38.3 C (100.9 F)	40 of 100 (Notable)
Blanding	United States	Record high minimum temperature	18.9 C (66.0 F)	40 of 100 (Notable)
Buena Vista 2S	United States	Record high maximum temperature	30.6 C (87.1 F)	39 of 100 (Notable)
Del Norte 3ENE	United States	Record high maximum temperature	30.0 C (86.0 F)	39 of 100 (Notable)
Clayton Muni Air Pk	United States	Record high minimum temperature	18.3 C (64.9 F)	38 of 100 (Notable)
Sauda	Norway	Record high minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Cheesman	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Imperial	United States	Record high maximum temperature	37.2 C (99.0 F)	37 of 100 (Notable)
Cerro	United States	Record high maximum temperature	33.3 C (91.9 F)	37 of 100 (Notable)
San Francisco Oceanside	United States	Record low minimum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
Westcliffe	United States	Record high maximum temperature	30.6 C (87.1 F)	36 of 100 (Notable)
Aberdeen Exp STN	United States	Record high maximum temperature	35.0 C (95.0 F)	36 of 100 (Notable)
Billings Wtp	United States	Record high minimum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Summit	United States	Record high minimum temperature	10.0 C (50.0 F)	36 of 100 (Notable)
Bengtsfors_D	Sweden	Record daily precipitation	29.2 mm (1.1 in)	35 of 100 (Notable)
Springerville	United States	Record high maximum temperature	31.7 C (89.1 F)	35 of 100 (Notable)
Kremmling	United States	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)
Syracuse 1NE	United States	Record high maximum temperature	39.4 C (102.9 F)	35 of 100 (Notable)
Lake Maloya	United States	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)
Buffalo Bill Dam	United States	Record high maximum temperature	32.2 C (90.0 F)	35 of 100 (Notable)
Worland	United States	Record high maximum temperature	34.4 C (93.9 F)	35 of 100 (Notable)

Counts by Type and Timescale

851 records

Records set or tied on 11 September 2021 by type: Highest daily maximum 414, Lowest daily maximum 20, Highest daily minimum 307, Lowest daily minimum 26, Heaviest daily rainfall 83, Deepest snow cover 1.

Records on 11 September 2021 by type
Record type	Records
Highest daily maximum	414
Lowest daily maximum	20
Highest daily minimum	307
Lowest daily minimum	26
Heaviest daily rainfall	83
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 11 September 2021 by timescale: all-time 0, monthly 20, daily 831.

How Much Records Were Beaten By

703 broken records

Margins by which the 703 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 240.8. Ties are not counted.

Top 20 by Significance

11 September 2021

Top 20 records on 11 September 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 2021	Dandong, CN	daily rain	103.9 mm (4.1 in)	64.6 mm (2.5 in)	40 years	51 of 100 (Notable)
11 September 2021	Orje, NO	daily rain	33.3 mm (1.3 in)	8.2 mm (0.32 in)	107 years	51 of 100 (Notable)
11 September 2021	Danang Intl, VN	daily rain	284.5 mm (11.2 in)	240.8 mm (9.5 in)	18 years	49 of 100 (Notable)
11 September 2021	Poronajsk, RU	daily rain	130.0 mm (5.1 in)	37.4 mm (1.5 in)	43 years	47 of 100 (Notable)
11 September 2021	Red Rvr, US	daily high max	29.4 C (84.9 F)	2.7 C (4.9 F)	110 years	47 of 100 (Notable)
11 September 2021	Vargarda_D, SE	daily rain	30.0 mm (1.2 in)	12.4 mm (0.5 in)	56 years	46 of 100 (Notable)
11 September 2021	Ed, SE	daily rain	31.1 mm (1.2 in)	14.1 mm (0.6 in)	67 years	46 of 100 (Notable)
11 September 2021	Manassa, US	daily high max	31.1 C (88.0 F)	2.2 C (4.0 F)	125 years	46 of 100 (Notable)
11 September 2021	Lahore City, PK	daily rain	96.0 mm (3.8 in)	90.2 mm (3.6 in)	14 years	45 of 100 (Notable)
11 September 2021	Aerop.Internacional, MX	daily rain	97.8 mm (3.9 in)	71.6 mm (2.8 in)	15 years	44 of 100 (Notable)
11 September 2021	Ft Collins, US	daily high max	35.6 C (96.1 F)	2.3 C (4.1 F)	125 years	44 of 100 (Notable)
11 September 2021	Steamboat Springs, US	daily high max	32.2 C (90.0 F)	2.2 C (4.0 F)	102 years	44 of 100 (Notable)
11 September 2021	Cody, US	daily high min	18.9 C (66.0 F)	2.2 C (4.0 F)	104 years	44 of 100 (Notable)
11 September 2021	Stollet_D, SE	daily rain	28.8 mm (1.1 in)	16.8 mm (0.7 in)	36 years	43 of 100 (Notable)
11 September 2021	Glenwood Spgs #2, US	daily high max	34.4 C (93.9 F)	2.2 C (4.0 F)	98 years	43 of 100 (Notable)
11 September 2021	Huntley Exp STN, US	daily high min	13.3 C (55.9 F)	1.6 C (2.9 F)	110 years	43 of 100 (Notable)
11 September 2021	Hooker, US	daily high max	41.1 C (106.0 F)	1.7 C (3.1 F)	111 years	43 of 100 (Notable)
11 September 2021	Lead, US	daily high max	32.8 C (91.0 F)	3.4 C (6.1 F)	94 years	43 of 100 (Notable)
11 September 2021	Dull Ctr 1SE, US	daily high min	18.3 C (64.9 F)	3.3 C (5.9 F)	94 years	43 of 100 (Notable)
11 September 2021	On, SE	daily rain	34.5 mm (1.4 in)	17.5 mm (0.7 in)	40 years	42 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

1809 to 2021

Records set or tied on this calendar date in each year from 1809 to 2021. 2021 had 851 records.

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

Records on 09-11 in each year
Year	Records
1809	1
1814	3
1818	1
1830	1
1836	1
1838	3
1839	1
1848	1
1850	1
1851	1
1854	2
1858	1
1860	2
1861	1
1863	2
1865	3
1866	1
1874	2
1876	1
1877	1
1879	1
1880	1
1882	4
1883	2
1884	1
1886	1
1888	2
1889	4
1890	2
1891	2
1892	1
1893	4
1894	2
1895	4
1896	1
1897	3
1898	3
1899	5
1900	1
1901	3
1902	15
1903	13
1904	4
1905	5
1906	10
1907	9
1908	20
1909	12
1910	19
1911	9
1912	25
1913	22
1914	52
1915	160
1916	17
1917	88
1918	62
1919	52
1920	158
1921	52
1922	78
1923	44
1924	290
1925	260
1926	137
1927	300
1928	127
1929	206
1930	136
1931	868
1932	210
1933	276
1934	144
1935	410
1936	567
1937	324
1938	288
1939	561
1940	891
1941	210
1942	234
1943	335
1944	446
1945	341
1946	262
1947	611
1948	424
1949	450
1950	462
1951	247
1952	549
1953	392
1954	363
1955	479
1956	539
1957	470
1958	748
1959	488
1960	423
1961	524
1962	480
1963	359
1964	1,195
1965	414
1966	392
1967	478
1968	835
1969	685
1970	474
1971	464
1972	507
1973	612
1974	430
1975	644
1976	920
1977	406
1978	911
1979	596
1980	474
1981	347
1982	862
1983	1,243
1984	888
1985	844
1986	1,221
1987	595
1988	1,019
1989	1,301
1990	840
1991	843
1992	672
1993	809
1994	713
1995	619
1996	1,030
1997	808
1998	1,821
1999	1,073
2000	1,469
2001	826
2002	1,059
2003	1,022
2004	740
2005	1,163
2006	1,132
2007	947
2008	916
2009	774
2010	965
2011	1,051
2012	687
2013	1,207
2014	1,100
2015	683
2016	677
2017	916
2018	763
2019	806
2020	1,235
2021	851
2022	617
2023	1,034
2024	889
2025	917
2026	615

Download the Data

Data for records on 2021-09-11: 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 50	699
50 to 100	3
100 to 150	0
150 to 200	0
200 to 250	1