Weather Records on 11 September 1977

406 weather records were set or tied worldwide on 11 September 1977. Highest significance: Minersville, US.

Key Facts for 11 September 1977

On 11 September 1977, 406 weather records were set or tied at long-record stations worldwide.
127 were record highs and 126 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 403 daily.
Minersville set a daily record precipitation of 32.5 mm (1.3 in) on 11 September 1977.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 424 records.

Record Map

406 stations

406 station records on 11 September 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Minersville	United States	Record daily precipitation	32.5 mm (1.3 in)	71 of 100 (Major)
Bombala (Cambalong)	Australia	Record daily precipitation	31.0 mm (1.2 in)	52 of 100 (Notable)
Delegate Station	Australia	Record daily precipitation	51.2 mm (2.0 in)	52 of 100 (Notable)
Pelee Island	Canada	Record daily precipitation	63.2 mm (2.5 in)	50 of 100 (Notable)
Jonkoping	Sweden	Record daily precipitation	25.3 mm (1.0 in)	50 of 100 (Notable)
Bonang	Australia	Record daily precipitation	65.0 mm (2.6 in)	48 of 100 (Notable)
Lake Konomoc	United States	Record daily precipitation	62.0 mm (2.4 in)	48 of 100 (Notable)
Novorossijsk	Russia	Record daily precipitation	37.7 mm (1.5 in)	46 of 100 (Notable)
Uppsala_Aut	Sweden	Record low maximum temperature	9.8 C (49.6 F)	43 of 100 (Notable)
Paulistrom	Sweden	Record daily precipitation	35.0 mm (1.4 in)	42 of 100 (Notable)
Kostroma	Russia	Record daily precipitation	44.3 mm (1.7 in)	37 of 100 (Notable)
Perryton	United States	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Ameca	Mexico	Record daily precipitation	43.7 mm (1.7 in)	35 of 100 (Notable)
Paveletz	Russia	Record daily precipitation	25.6 mm (1.0 in)	35 of 100 (Notable)
Sedan	United States	Record daily precipitation	45.2 mm (1.8 in)	35 of 100 (Notable)
Brady	United States	Record high maximum temperature	38.3 C (100.9 F)	35 of 100 (Notable)
Kihnu	Estonia	Record daily precipitation	33.7 mm (1.3 in)	34 of 100 (Routine)
Kisinev	Moldova	Record low maximum temperature	15.2 C (59.4 F)	34 of 100 (Routine)
Hogemalen	Sweden	Record daily precipitation	25.1 mm (1.0 in)	34 of 100 (Routine)
Boras	Sweden	Record daily precipitation	27.4 mm (1.1 in)	33 of 100 (Routine)
Beaver	United States	Record daily precipitation	27.4 mm (1.1 in)	33 of 100 (Routine)
Hylletofta	Sweden	Record daily precipitation	33.2 mm (1.3 in)	32 of 100 (Routine)
Nyabyberg	Sweden	Record daily precipitation	28.3 mm (1.1 in)	31 of 100 (Routine)
Arvingetorp	Sweden	Record daily precipitation	27.4 mm (1.1 in)	31 of 100 (Routine)
Forse	Sweden	Record low minimum temperature	-5.5 C (22.1 F)	31 of 100 (Routine)
Lincolnton	United States	Record daily precipitation	36.1 mm (1.4 in)	30 of 100 (Routine)
Wandering Comparison	Australia	Record low minimum temperature	-2.4 C (27.7 F)	29 of 100 (Routine)
Tartu-Toravere	Estonia	Record daily precipitation	26.3 mm (1.0 in)	29 of 100 (Routine)
Livermore	United States	Record low minimum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Atoyac (Smn)	Mexico	Record low minimum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Atengo (Smn)	Mexico	Record daily precipitation	55.4 mm (2.2 in)	28 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record low maximum temperature	9.0 C (48.2 F)	28 of 100 (Routine)
Dyer 5S	United States	Record high minimum temperature	15.6 C (60.1 F)	28 of 100 (Routine)
Yahualica de Gonzalez Gallo (	Mexico	Record daily precipitation	38.1 mm (1.5 in)	27 of 100 (Routine)
Roros	Norway	Record low minimum temperature	-6.7 C (19.9 F)	27 of 100 (Routine)
Huskvarna	Sweden	Record daily precipitation	26.2 mm (1.0 in)	27 of 100 (Routine)
Mammoth Spring	United States	Record low maximum temperature	20.0 C (68.0 F)	27 of 100 (Routine)
Yosemite Park HQ	United States	Record high maximum temperature	37.8 C (100.0 F)	27 of 100 (Routine)
Saint Paul Is AP	United States	Record high maximum temperature	12.2 C (54.0 F)	27 of 100 (Routine)
Stockholm	Sweden	Record low maximum temperature	10.6 C (51.1 F)	26 of 100 (Routine)
Burlingame	United States	Record low maximum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Inverness 3 SE	United States	Record high maximum temperature	38.3 C (100.9 F)	26 of 100 (Routine)
Kula Sanatorium 267	United States	Record high minimum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Catemaco	Mexico	Record low maximum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Syktyvkar	Russia	Record high maximum temperature	23.1 C (73.6 F)	25 of 100 (Routine)
Krasnyj Chikoj	Russia	Record low minimum temperature	-5.2 C (22.6 F)	25 of 100 (Routine)
Harnosand	Sweden	Record low minimum temperature	-2.0 C (28.4 F)	25 of 100 (Routine)
Litchfield Park	United States	Record low maximum temperature	31.1 C (88.0 F)	25 of 100 (Routine)
Rifle	United States	Record high minimum temperature	13.9 C (57.0 F)	25 of 100 (Routine)
Gaoua	Burkina Faso	Record daily precipitation	49.1 mm (1.9 in)	25 of 100 (Routine)
Northam	Australia	Record low minimum temperature	1.0 C (33.8 F)	24 of 100 (Routine)
Narrogin	Australia	Record low minimum temperature	-0.6 C (30.9 F)	24 of 100 (Routine)
Bombala (Nungatta)	Australia	Record daily precipitation	28.6 mm (1.1 in)	24 of 100 (Routine)
Tonala (Smn)	Mexico	Record high minimum temperature	25.0 C (77.0 F)	24 of 100 (Routine)
Atotonilco El Alto	Mexico	Record daily precipitation	57.2 mm (2.3 in)	24 of 100 (Routine)
Gavle	Sweden	Record low maximum temperature	9.2 C (48.6 F)	24 of 100 (Routine)
Duved	Sweden	Record low minimum temperature	-6.3 C (20.7 F)	24 of 100 (Routine)
Florence	United States	Record low maximum temperature	32.2 C (90.0 F)	24 of 100 (Routine)
Eastland	United States	Record high minimum temperature	23.3 C (73.9 F)	24 of 100 (Routine)
Vilnius	Lithuania	Record low minimum temperature	0.0 C (32.0 F)	23 of 100 (Routine)

Counts by Type and Timescale

406 records

Records set or tied on 11 September 1977 by type: Highest daily maximum 39, Lowest daily maximum 58, Highest daily minimum 88, Lowest daily minimum 68, Heaviest daily rainfall 152, Heaviest daily snowfall 1.

Records on 11 September 1977 by type
Record type	Records
Highest daily maximum	39
Lowest daily maximum	58
Highest daily minimum	88
Lowest daily minimum	68
Heaviest daily rainfall	152
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 11 September 1977 by timescale: all-time 0, monthly 3, daily 403.

How Much Records Were Beaten By

330 broken records

Margins by which the 330 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 34.5. Ties are not counted.

Top 20 by Significance

11 September 1977

Top 20 records on 11 September 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1977	Minersville, US	daily rain	32.5 mm (1.3 in)	27.4 mm (1.1 in)	79 years	71 of 100 (Major)
11 September 1977	Bombala (Cambalong), AU	daily rain	31.0 mm (1.2 in)	20.6 mm (0.8 in)	39 years	52 of 100 (Notable)
11 September 1977	Delegate Station, AU	daily rain	51.2 mm (2.0 in)	32.4 mm (1.3 in)	24 years	52 of 100 (Notable)
11 September 1977	Pelee Island, CA	daily rain	63.2 mm (2.5 in)	32.7 mm (1.3 in)	55 years	50 of 100 (Notable)
11 September 1977	Jonkoping, SE	daily rain	25.3 mm (1.0 in)	5.4 mm (0.21 in)	103 years	50 of 100 (Notable)
11 September 1977	Bonang, AU	daily rain	65.0 mm (2.6 in)	34.5 mm (1.4 in)	20 years	48 of 100 (Notable)
11 September 1977	Lake Konomoc, US	daily rain	62.0 mm (2.4 in)	30.8 mm (1.2 in)	76 years	48 of 100 (Notable)
11 September 1977	Novorossijsk, RU	daily rain	37.7 mm (1.5 in)	9.6 mm (0.38 in)	93 years	46 of 100 (Notable)
11 September 1977	Uppsala_Aut, SE	daily low max	9.8 C (49.6 F)	1.2 C (2.2 F)	134 years	43 of 100 (Notable)
11 September 1977	Paulistrom, SE	daily rain	35.0 mm (1.4 in)	22.8 mm (0.9 in)	6 years	42 of 100 (Notable)
11 September 1977	Kostroma, RU	monthly rain	44.3 mm (1.7 in)	6.9 mm (0.27 in)	33 years	37 of 100 (Notable)
11 September 1977	Perryton, US	daily rain	33.0 mm (1.3 in)	13.7 mm (0.5 in)	64 years	36 of 100 (Notable)
11 September 1977	Ameca, MX	daily rain	43.7 mm (1.7 in)	26.4 mm (1.0 in)	18 years	35 of 100 (Notable)
11 September 1977	Paveletz, RU	daily rain	25.6 mm (1.0 in)	12.7 mm (0.5 in)	30 years	35 of 100 (Notable)
11 September 1977	Sedan, US	daily rain	45.2 mm (1.8 in)	13.4 mm (0.5 in)	72 years	35 of 100 (Notable)
11 September 1977	Brady, US	daily high max	38.3 C (100.9 F)	1.1 C (2.0 F)	83 years	35 of 100 (Notable)
11 September 1977	Kihnu, EE	daily rain	33.7 mm (1.3 in)	9.4 mm (0.37 in)	44 years	34 of 100 (Routine)
11 September 1977	Kisinev, MD	daily low max	15.2 C (59.4 F)	1.1 C (2.0 F)	82 years	34 of 100 (Routine)
11 September 1977	Hogemalen, SE	daily rain	25.1 mm (1.0 in)	12.6 mm (0.5 in)	31 years	34 of 100 (Routine)
11 September 1977	Boras, SE	daily rain	27.4 mm (1.1 in)	6.2 mm (0.24 in)	52 years	33 of 100 (Routine)

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 1977

Records set or tied on this calendar date in each year from 1809 to 1977. 1977 had 406 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 1977-09-11: 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 5	250
5 to 10	44
10 to 15	16
15 to 20	8
20 to 25	6
25 to 30	2
30 to 35	4