Weather Records on 11 September 1970

474 weather records were set or tied worldwide on 11 September 1970. Highest significance: Kjahta, RU.

Key Facts for 11 September 1970

On 11 September 1970, 474 weather records were set or tied at long-record stations worldwide.
77 were record highs and 162 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 21 monthly and 452 daily.
Kjahta set a daily record precipitation of 32.9 mm (1.3 in) on 11 September 1970.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 423 records.

Record Map

474 stations

474 station records on 11 September 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kjahta	Russia	Record daily precipitation	32.9 mm (1.3 in)	67 of 100 (Major)
Lohar-Daga	India	Record daily precipitation	185.0 mm (7.3 in)	57 of 100 (Notable)
Lugano	Switzerland	Record daily precipitation	129.4 mm (5.1 in)	52 of 100 (Notable)
Latehar	India	Record daily precipitation	156.2 mm (6.1 in)	51 of 100 (Notable)
Hamar-Daban	Russia	Record daily precipitation	90.0 mm (3.5 in)	50 of 100 (Notable)
Aiken 5SE	United States	Record daily precipitation	78.5 mm (3.1 in)	50 of 100 (Notable)
Bishnupur	India	Record daily precipitation	156.0 mm (6.1 in)	48 of 100 (Notable)
Khunti	India	Record daily precipitation	215.0 mm (8.5 in)	45 of 100 (Notable)
Bhandaria	India	Record daily precipitation	135.7 mm (5.3 in)	44 of 100 (Notable)
Villupuram	India	Record daily precipitation	117.0 mm (4.6 in)	43 of 100 (Notable)
Allende (Smn)	Mexico	Record daily precipitation	39.9 mm (1.6 in)	42 of 100 (Notable)
Aneroid	Canada	Record daily snowfall	10.2 cm (4.0 in)	41 of 100 (Notable)
New Bern 3 NW	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Semjachik	Russia	Record daily precipitation	61.0 mm (2.4 in)	40 of 100 (Notable)
Yellow Grass	Canada	Record daily snowfall	8.1 cm (3.2 in)	39 of 100 (Notable)
Sion	Canada	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Mahuadaur	India	Record daily precipitation	166.4 mm (6.6 in)	38 of 100 (Notable)
Solomons	United States	Record daily precipitation	62.7 mm (2.5 in)	38 of 100 (Notable)
Chaplin	Canada	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Mountain View	Canada	Record daily snowfall	17.8 cm (7.0 in)	36 of 100 (Notable)
Regina Int'l A	Canada	Record daily snowfall	5.1 cm (2.0 in)	36 of 100 (Notable)
Cypress River	Canada	Record daily precipitation	25.4 mm (1.0 in)	36 of 100 (Notable)
Dryden	Canada	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Petropavlovskij Majak	Russia	Record daily precipitation	51.1 mm (2.0 in)	36 of 100 (Notable)
Babuskin	Russia	Record daily precipitation	42.2 mm (1.7 in)	36 of 100 (Notable)
Regina Int'l A	Canada	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Virden	Canada	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Barkerville	Canada	Record low maximum temperature	3.3 C (37.9 F)	34 of 100 (Routine)
Atlin	Canada	Record low minimum temperature	-3.3 C (26.1 F)	34 of 100 (Routine)
Kenora A	Canada	Record daily precipitation	29.0 mm (1.1 in)	34 of 100 (Routine)
Oberstdorf	Germany	Record daily precipitation	52.5 mm (2.1 in)	34 of 100 (Routine)
Rio da Cidade	Brazil	Record daily precipitation	32.0 mm (1.3 in)	33 of 100 (Routine)
Garmisch-Partenkirchen	Germany	Record daily precipitation	43.0 mm (1.7 in)	33 of 100 (Routine)
Dehradun	India	Record daily precipitation	150.3 mm (5.9 in)	33 of 100 (Routine)
Inverell Comparison	Australia	Record low minimum temperature	-4.6 C (23.7 F)	32 of 100 (Routine)
Cacapava	Brazil	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Calgary Int'l A	Canada	Record low maximum temperature	1.7 C (35.1 F)	32 of 100 (Routine)
Minnedosa	Canada	Record low maximum temperature	6.7 C (44.1 F)	32 of 100 (Routine)
Virden	Canada	Record low maximum temperature	5.6 C (42.1 F)	32 of 100 (Routine)
Mudukulathur	India	Record daily precipitation	63.0 mm (2.5 in)	32 of 100 (Routine)
Burlington	United States	Record low minimum temperature	0.0 C (32.0 F)	32 of 100 (Routine)
Windsor	United States	Record daily precipitation	56.1 mm (2.2 in)	32 of 100 (Routine)
Brandon Cda	Canada	Record low maximum temperature	6.1 C (43.0 F)	31 of 100 (Routine)
Portage la Prairie	Canada	Record daily precipitation	34.3 mm (1.4 in)	31 of 100 (Routine)
Salzburg	Austria	Record high maximum temperature	29.6 C (85.3 F)	30 of 100 (Routine)
Hamiota	Canada	Record low maximum temperature	5.6 C (42.1 F)	30 of 100 (Routine)
Sonahatu	India	Record daily precipitation	95.0 mm (3.7 in)	30 of 100 (Routine)
Pablillo (Smn)	Mexico	Record daily precipitation	71.9 mm (2.8 in)	30 of 100 (Routine)
Marble Bar Comparison	Australia	Record low maximum temperature	24.0 C (75.2 F)	29 of 100 (Routine)
Eugenio Lefevre	Brazil	Record daily precipitation	35.3 mm (1.4 in)	29 of 100 (Routine)
Big Creek	Canada	Record low maximum temperature	7.2 C (45.0 F)	29 of 100 (Routine)
Foremost	Canada	Record daily snowfall	9.1 cm (3.6 in)	29 of 100 (Routine)
Lake Louise	Canada	Record low maximum temperature	0.6 C (33.1 F)	29 of 100 (Routine)
Pekisko	Canada	Record low maximum temperature	-2.2 C (28.0 F)	29 of 100 (Routine)
Regina Cda	Canada	Record daily snowfall	7.9 cm (3.1 in)	29 of 100 (Routine)
Zugspitze	Germany	Record daily precipitation	26.1 mm (1.0 in)	29 of 100 (Routine)
San Fernando	Mexico	Record daily precipitation	88.9 mm (3.5 in)	29 of 100 (Routine)
Sloan 3 S	United States	Record daily precipitation	69.9 mm (2.8 in)	29 of 100 (Routine)
Glen Royal	Australia	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Bjelasnica	Bosnia and Herzegovina	Record high maximum temperature	18.6 C (65.5 F)	28 of 100 (Routine)

Counts by Type and Timescale

474 records

Records set or tied on 11 September 1970 by type: Highest daily maximum 41, Lowest daily maximum 102, Highest daily minimum 36, Lowest daily minimum 60, Heaviest daily rainfall 203, Heaviest daily snowfall 31, Deepest snow cover 1.

Records on 11 September 1970 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	102
Highest daily minimum	36
Lowest daily minimum	60
Heaviest daily rainfall	203
Heaviest daily snowfall	31
Deepest snow cover	1

Records on 11 September 1970 by timescale: all-time 1, monthly 21, daily 452.

How Much Records Were Beaten By

412 broken records

Margins by which the 412 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

11 September 1970

Top 20 records on 11 September 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1970	Kjahta, RU	daily rain	32.9 mm (1.3 in)	25.7 mm (1.0 in)	67 years	67 of 100 (Major)
11 September 1970	Lohar-Daga, IN	daily rain	185.0 mm (7.3 in)	72.0 mm (2.8 in)	33 years	57 of 100 (Notable)
11 September 1970	Lugano, CH	daily rain	129.4 mm (5.1 in)	61.9 mm (2.4 in)	40 years	52 of 100 (Notable)
11 September 1970	Latehar, IN	daily rain	156.2 mm (6.1 in)	86.3 mm (3.4 in)	19 years	51 of 100 (Notable)
11 September 1970	Hamar-Daban, RU	daily rain	90.0 mm (3.5 in)	56.6 mm (2.2 in)	25 years	50 of 100 (Notable)
11 September 1970	Aiken 5SE, US	daily rain	78.5 mm (3.1 in)	48.0 mm (1.9 in)	57 years	50 of 100 (Notable)
11 September 1970	Bishnupur, IN	daily rain	156.0 mm (6.1 in)	93.8 mm (3.7 in)	19 years	48 of 100 (Notable)
11 September 1970	Khunti, IN	all-time rain	215.0 mm (8.5 in)	2.9 mm (0.11 in)	63 years	45 of 100 (Notable)
11 September 1970	Bhandaria, IN	daily rain	135.7 mm (5.3 in)	77.8 mm (3.1 in)	19 years	44 of 100 (Notable)
11 September 1970	Villupuram, IN	daily rain	117.0 mm (4.6 in)	80.4 mm (3.2 in)	16 years	43 of 100 (Notable)
11 September 1970	Allende (Smn), MX	daily rain	39.9 mm (1.6 in)	39.9 mm (1.6 in)	63 years	42 of 100 (Notable)
11 September 1970	Aneroid, CA	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	53 years	41 of 100 (Notable)
11 September 1970	New Bern 3 NW, US	daily rain	66.0 mm (2.6 in)	12.7 mm (0.5 in)	94 years	41 of 100 (Notable)
11 September 1970	Semjachik, RU	daily rain	61.0 mm (2.4 in)	41.6 mm (1.6 in)	27 years	40 of 100 (Notable)
11 September 1970	Yellow Grass, CA	daily snowfall	8.1 cm (3.2 in)	8.1 cm (3.2 in)	59 years	39 of 100 (Notable)
11 September 1970	Sion, CA	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	55 years	38 of 100 (Notable)
11 September 1970	Mahuadaur, IN	daily rain	166.4 mm (6.6 in)	50.8 mm (2.0 in)	24 years	38 of 100 (Notable)
11 September 1970	Solomons, US	daily rain	62.7 mm (2.5 in)	22.1 mm (0.9 in)	59 years	38 of 100 (Notable)
11 September 1970	Chaplin, CA	daily rain	25.4 mm (1.0 in)	5.1 mm (0.20 in)	79 years	37 of 100 (Notable)
11 September 1970	Mountain View, CA	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	56 years	36 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 1970

Records set or tied on this calendar date in each year from 1809 to 1970. 1970 had 474 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 1970-09-11: 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 25	372
25 to 50	21
50 to 75	10
75 to 100	7
100 to 125	1
125 to 150	0
150 to 175	0
175 to 200	1