Weather Records on 12 September 1970

619 weather records were set or tied worldwide on 12 September 1970. Highest significance: Pitkin, US.

Key Facts for 12 September 1970

On 12 September 1970, 619 weather records were set or tied at long-record stations worldwide.
73 were record highs and 377 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 613 daily.
Pitkin set a daily record precipitation of 33.0 mm (1.3 in) on 12 September 1970.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 412 records.

Record Map

619 stations

619 station records on 12 September 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pitkin	United States	Record daily precipitation	33.0 mm (1.3 in)	59 of 100 (Notable)
Mana 1026	United States	Record daily precipitation	79.5 mm (3.1 in)	51 of 100 (Notable)
Denkanikottah	India	Record daily precipitation	101.9 mm (4.0 in)	49 of 100 (Notable)
Nagerutari	India	Record daily precipitation	156.0 mm (6.1 in)	48 of 100 (Notable)
Nikolskoye/Beringa Ostrov	Russia	Record daily precipitation	28.6 mm (1.1 in)	47 of 100 (Notable)
Cody	United States	Record daily snowfall	20.3 cm (8.0 in)	45 of 100 (Notable)
Talkeetna AP	United States	Record daily precipitation	50.0 mm (2.0 in)	45 of 100 (Notable)
Karauli	India	Record daily precipitation	82.5 mm (3.2 in)	44 of 100 (Notable)
Vinhedo	Brazil	Record daily precipitation	170.2 mm (6.7 in)	43 of 100 (Notable)
Allende (Smn)	Mexico	Record daily precipitation	83.8 mm (3.3 in)	41 of 100 (Notable)
Cascade 5 S	United States	Record daily snowfall	5.1 cm (2.0 in)	40 of 100 (Notable)
Kanakapura	India	Record daily precipitation	61.5 mm (2.4 in)	37 of 100 (Notable)
San Fernando	Mexico	Record daily precipitation	78.5 mm (3.1 in)	37 of 100 (Notable)
Hickory 1 E	United States	Record daily precipitation	51.6 mm (2.0 in)	37 of 100 (Notable)
Big Timber	United States	Record low maximum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Wyola 1 SW	United States	Record daily snowfall	17.8 cm (7.0 in)	35 of 100 (Notable)
Hatteras	United States	Record daily precipitation	114.6 mm (4.5 in)	35 of 100 (Notable)
Livermore	United States	Record low minimum temperature	2.8 C (37.0 F)	34 of 100 (Routine)
Bonners Ferry	United States	Record low minimum temperature	-5.0 C (23.0 F)	34 of 100 (Routine)
Rapelje	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Jemez Springs	United States	Record low minimum temperature	1.1 C (34.0 F)	34 of 100 (Routine)
Tierra Blanca (Smn)	Mexico	Record daily precipitation	89.9 mm (3.5 in)	33 of 100 (Routine)
Browning	United States	Record low maximum temperature	-2.2 C (28.0 F)	33 of 100 (Routine)
Red Lodge	United States	Record daily snowfall	31.8 cm (12.5 in)	33 of 100 (Routine)
Kaycee	United States	Record low maximum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Santa Sofia	Brazil	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)
Mystic Lake	United States	Record daily snowfall	27.9 cm (11.0 in)	32 of 100 (Routine)
Olga 2 SE	United States	Record low minimum temperature	2.8 C (37.0 F)	32 of 100 (Routine)
Brownsville	United States	Record high minimum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Kharagpur	India	Record daily precipitation	55.0 mm (2.2 in)	31 of 100 (Routine)
Bridger 2 N	United States	Record low maximum temperature	3.9 C (39.0 F)	31 of 100 (Routine)
Blanding	United States	Record daily precipitation	29.7 mm (1.2 in)	31 of 100 (Routine)
Paragonah	United States	Record high minimum temperature	19.4 C (66.9 F)	31 of 100 (Routine)
Sheridan Fld STN	United States	Record daily snowfall	6.4 cm (2.5 in)	31 of 100 (Routine)
Orlando Executive AP	United States	Record high minimum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Brandon Cda	Canada	Record low maximum temperature	5.6 C (42.1 F)	30 of 100 (Routine)
Lamar Rs	United States	Record daily snowfall	15.2 cm (6.0 in)	30 of 100 (Routine)
Big Creek	Canada	Record low minimum temperature	-8.3 C (17.1 F)	29 of 100 (Routine)
Cardston	Canada	Record daily snowfall	5.1 cm (2.0 in)	29 of 100 (Routine)
Banff	Canada	Record low minimum temperature	-7.8 C (18.0 F)	29 of 100 (Routine)
Minnedosa	Canada	Record low maximum temperature	6.1 C (43.0 F)	29 of 100 (Routine)
Mackay Lost Rvr Rs	United States	Record low maximum temperature	11.1 C (52.0 F)	29 of 100 (Routine)
Red Lodge	United States	Record daily precipitation	32.5 mm (1.3 in)	29 of 100 (Routine)
Beulah	United States	Record low minimum temperature	-1.7 C (28.9 F)	29 of 100 (Routine)
Anacortes	United States	Record low minimum temperature	4.4 C (39.9 F)	29 of 100 (Routine)
Yellowstone Park Mammoth	United States	Record low minimum temperature	-4.4 C (24.1 F)	29 of 100 (Routine)
Moorcroft 3S	United States	Record low maximum temperature	2.2 C (36.0 F)	29 of 100 (Routine)
Kaslo	Canada	Record low minimum temperature	-1.1 C (30.0 F)	28 of 100 (Routine)
Indian Head Cda	Canada	Record low maximum temperature	5.0 C (41.0 F)	28 of 100 (Routine)
Sangola	India	Record daily precipitation	51.0 mm (2.0 in)	28 of 100 (Routine)
Tombstone	United States	Record high minimum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Saint Maries	United States	Record low minimum temperature	-1.7 C (28.9 F)	28 of 100 (Routine)
Choteau	United States	Record low maximum temperature	1.1 C (34.0 F)	28 of 100 (Routine)
Taloga	United States	Record high minimum temperature	22.8 C (73.0 F)	28 of 100 (Routine)
Hilland 2 NW	United States	Record low maximum temperature	9.4 C (48.9 F)	28 of 100 (Routine)
Buffalo Bill Dam	United States	Record low maximum temperature	4.4 C (39.9 F)	28 of 100 (Routine)
Moran 5WNW	United States	Record daily snowfall	6.4 cm (2.5 in)	28 of 100 (Routine)
Powell	United States	Record low maximum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Medicine Hat A	Canada	Record low maximum temperature	3.3 C (37.9 F)	27 of 100 (Routine)
Melur	India	Record daily precipitation	77.3 mm (3.0 in)	27 of 100 (Routine)

Counts by Type and Timescale

619 records

Records set or tied on 12 September 1970 by type: Highest daily maximum 27, Lowest daily maximum 219, Highest daily minimum 46, Lowest daily minimum 158, Heaviest daily rainfall 142, Heaviest daily snowfall 23, Deepest snow cover 4.

Records on 12 September 1970 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	219
Highest daily minimum	46
Lowest daily minimum	158
Heaviest daily rainfall	142
Heaviest daily snowfall	23
Deepest snow cover	4

Records on 12 September 1970 by timescale: all-time 0, monthly 6, daily 613.

How Much Records Were Beaten By

495 broken records

Margins by which the 495 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 191.0. Ties are not counted.

Top 20 by Significance

12 September 1970

Top 20 records on 12 September 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 1970	Pitkin, US	daily rain	33.0 mm (1.3 in)	17.8 mm (0.7 in)	60 years	59 of 100 (Notable)
12 September 1970	Mana 1026, US	daily rain	79.5 mm (3.1 in)	64.3 mm (2.5 in)	17 years	51 of 100 (Notable)
12 September 1970	Denkanikottah, IN	daily rain	101.9 mm (4.0 in)	44.5 mm (1.8 in)	68 years	49 of 100 (Notable)
12 September 1970	Nagerutari, IN	daily rain	156.0 mm (6.1 in)	119.2 mm (4.7 in)	7 years	48 of 100 (Notable)
12 September 1970	Nikolskoye/Beringa Ostrov, RU	daily rain	28.6 mm (1.1 in)	20.0 mm (0.8 in)	9 years	47 of 100 (Notable)
12 September 1970	Cody, US	monthly snowfall	20.3 cm (8.0 in)	10.1 cm (4.0 in)	35 years	45 of 100 (Notable)
12 September 1970	Talkeetna AP, US	daily rain	50.0 mm (2.0 in)	24.6 mm (1.0 in)	44 years	45 of 100 (Notable)
12 September 1970	Karauli, IN	daily rain	82.5 mm (3.2 in)	35.5 mm (1.4 in)	64 years	44 of 100 (Notable)
12 September 1970	Vinhedo, BR	daily rain	170.2 mm (6.7 in)	163.2 mm (6.4 in)	3 years	43 of 100 (Notable)
12 September 1970	Allende (Smn), MX	daily rain	83.8 mm (3.3 in)	71.9 mm (2.8 in)	7 years	41 of 100 (Notable)
12 September 1970	Cascade 5 S, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	65 years	40 of 100 (Notable)
12 September 1970	Kanakapura, IN	daily rain	61.5 mm (2.4 in)	28.5 mm (1.1 in)	52 years	37 of 100 (Notable)
12 September 1970	San Fernando, MX	daily rain	78.5 mm (3.1 in)	58.7 mm (2.3 in)	15 years	37 of 100 (Notable)
12 September 1970	Hickory 1 E, US	daily rain	51.6 mm (2.0 in)	34.1 mm (1.3 in)	40 years	37 of 100 (Notable)
12 September 1970	Big Timber, US	daily low max	3.3 C (37.9 F)	3.9 C (7.0 F)	73 years	35 of 100 (Notable)
12 September 1970	Wyola 1 SW, US	daily snowfall	17.8 cm (7.0 in)	12.7 cm (5.0 in)	20 years	35 of 100 (Notable)
12 September 1970	Hatteras, US	daily rain	114.6 mm (4.5 in)	59.0 mm (2.3 in)	9 years	35 of 100 (Notable)
12 September 1970	Livermore, US	daily low min	2.8 C (37.0 F)	3.3 C (5.9 F)	55 years	34 of 100 (Routine)
12 September 1970	Bonners Ferry, US	monthly low min	-5.0 C (23.0 F)	0.6 C (1.1 F)	59 years	34 of 100 (Routine)
12 September 1970	Rapelje, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	61 years	34 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

1793 to 1970

Records set or tied on this calendar date in each year from 1793 to 1970. 1970 had 619 records.

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

Records on 09-12 in each year
Year	Records
1793	2
1809	1
1813	1
1814	2
1834	1
1837	2
1839	1
1847	1
1848	1
1854	4
1859	2
1860	2
1865	2
1866	1
1867	1
1868	2
1869	1
1872	2
1876	1
1878	1
1880	1
1881	1
1882	1
1884	2
1885	2
1886	1
1887	2
1888	2
1889	1
1891	4
1892	1
1893	4
1894	1
1895	5
1896	2
1897	3
1898	3
1899	4
1900	1
1901	5
1902	11
1903	18
1904	7
1905	8
1906	24
1907	11
1908	12
1909	11
1910	4
1911	15
1912	20
1913	12
1914	49
1915	71
1916	21
1917	231
1918	42
1919	69
1920	49
1921	60
1922	136
1923	33
1924	177
1925	443
1926	89
1927	339
1928	155
1929	118
1930	198
1931	648
1932	199
1933	360
1934	176
1935	441
1936	515
1937	318
1938	332
1939	702
1940	891
1941	172
1942	337
1943	544
1944	393
1945	414
1946	302
1947	596
1948	292
1949	512
1950	578
1951	399
1952	575
1953	515
1954	313
1955	457
1956	389
1957	727
1958	783
1959	536
1960	772
1961	750
1962	407
1963	466
1964	836
1965	459
1966	416
1967	510
1968	428
1969	558
1970	619
1971	593
1972	430
1973	588
1974	575
1975	1,102
1976	539
1977	524
1978	952
1979	765
1980	511
1981	424
1982	993
1983	915
1984	700
1985	876
1986	787
1987	686
1988	997
1989	1,313
1990	1,001
1991	672
1992	767
1993	798
1994	550
1995	532
1996	1,014
1997	737
1998	1,770
1999	938
2000	1,188
2001	797
2002	883
2003	830
2004	653
2005	1,032
2006	963
2007	776
2008	1,213
2009	876
2010	939
2011	988
2012	639
2013	1,066
2014	1,374
2015	704
2016	748
2017	1,114
2018	595
2019	884
2020	566
2021	513
2022	739
2023	844
2024	1,009
2025	433
2026	627

Download the Data

Data for records on 1970-09-12: 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	464
25 to 50	12
50 to 75	11
75 to 100	1
100 to 125	3
125 to 150	1
150 to 175	1
175 to 200	2