Weather Records on 20 September 1970

591 weather records were set or tied worldwide on 20 September 1970. Highest significance: Muloorina Station (Muloorina H, AU.

Key Facts for 20 September 1970

On 20 September 1970, 591 weather records were set or tied at long-record stations worldwide.
160 were record highs and 51 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 581 daily.
Muloorina Station (Muloorina H set a daily record precipitation of 29.2 mm (1.1 in) on 20 September 1970.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 441 records.

Record Map

591 stations

591 station records on 20 September 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Muloorina Station (Muloorina H	Australia	Record daily precipitation	29.2 mm (1.1 in)	68 of 100 (Major)
Podor	Senegal	Record daily precipitation	90.4 mm (3.6 in)	64 of 100 (Major)
Cook	Australia	Record daily precipitation	38.1 mm (1.5 in)	63 of 100 (Major)
Pingelly	Australia	Record daily precipitation	30.2 mm (1.2 in)	59 of 100 (Notable)
Malyalling	Australia	Record daily precipitation	29.5 mm (1.2 in)	58 of 100 (Notable)
Mullewa	Australia	Record daily precipitation	29.5 mm (1.2 in)	55 of 100 (Notable)
Albany	Australia	Record daily precipitation	79.8 mm (3.1 in)	55 of 100 (Notable)
Fargo Hector Intl AP	United States	Record daily precipitation	72.6 mm (2.9 in)	54 of 100 (Notable)
Hyden	Australia	Record daily precipitation	27.9 mm (1.1 in)	52 of 100 (Notable)
Kandalaksa	Russia	Record daily precipitation	27.8 mm (1.1 in)	52 of 100 (Notable)
Manypeaks	Australia	Record daily precipitation	47.8 mm (1.9 in)	48 of 100 (Notable)
Great Falls	Canada	Record daily precipitation	54.6 mm (2.1 in)	48 of 100 (Notable)
Winnipeg Richardson Int'l A	Canada	Record daily precipitation	51.1 mm (2.0 in)	47 of 100 (Notable)
Ron	India	Record daily precipitation	93.5 mm (3.7 in)	46 of 100 (Notable)
Madhubani	India	Record daily precipitation	135.0 mm (5.3 in)	45 of 100 (Notable)
Karaganda	Kazakhstan	Record daily precipitation	26.2 mm (1.0 in)	44 of 100 (Notable)
Summit	United States	Record daily precipitation	27.4 mm (1.1 in)	43 of 100 (Notable)
Cranganore	India	Record daily precipitation	87.0 mm (3.4 in)	39 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	8.0 C (46.4 F)	39 of 100 (Notable)
Strasbourg	Canada	Record daily precipitation	25.7 mm (1.0 in)	37 of 100 (Notable)
Kalyandrug	India	Record daily precipitation	71.0 mm (2.8 in)	37 of 100 (Notable)
Sringeri	India	Record daily precipitation	72.4 mm (2.9 in)	37 of 100 (Notable)
Fort Cochin	India	Record daily precipitation	88.4 mm (3.5 in)	37 of 100 (Notable)
Cedral	Mexico	Record daily precipitation	26.7 mm (1.1 in)	36 of 100 (Notable)
Euabolong (Brotherony)	Australia	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Virden	Canada	Record daily precipitation	45.7 mm (1.8 in)	34 of 100 (Routine)
Swan River	Canada	Record daily precipitation	25.7 mm (1.0 in)	34 of 100 (Routine)
Newburgh L&D	United States	Record daily precipitation	64.8 mm (2.6 in)	34 of 100 (Routine)
Tahlee (Carrington (Church St)	Australia	Record daily precipitation	33.3 mm (1.3 in)	33 of 100 (Routine)
King River	Australia	Record daily precipitation	45.2 mm (1.8 in)	32 of 100 (Routine)
Roy	United States	Record high minimum temperature	16.7 C (62.1 F)	32 of 100 (Routine)
Avoca	Australia	Record daily precipitation	25.7 mm (1.0 in)	31 of 100 (Routine)
Tripoli City	Libya	Record daily precipitation	37.8 mm (1.5 in)	31 of 100 (Routine)
Cypress River	Canada	Record daily precipitation	38.1 mm (1.5 in)	30 of 100 (Routine)
Itchapuram	India	Record daily precipitation	87.6 mm (3.4 in)	30 of 100 (Routine)
Shenkursk	Russia	Record high minimum temperature	11.5 C (52.7 F)	30 of 100 (Routine)
Rangely 1E	United States	Record high minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Charles City	United States	Record high maximum temperature	30.6 C (87.1 F)	30 of 100 (Routine)
Williams	Australia	Record daily precipitation	30.2 mm (1.2 in)	29 of 100 (Routine)
Springview 2NW	United States	Record high minimum temperature	17.2 C (63.0 F)	28 of 100 (Routine)
Robe Comparison	Australia	Record low minimum temperature	3.9 C (39.0 F)	27 of 100 (Routine)
Grenfell	Canada	Record daily precipitation	28.7 mm (1.1 in)	27 of 100 (Routine)
Ponnani	India	Record daily precipitation	81.3 mm (3.2 in)	27 of 100 (Routine)
Bemidji	United States	Record daily precipitation	35.1 mm (1.4 in)	27 of 100 (Routine)
Canton 1 SW	United States	Record daily precipitation	37.6 mm (1.5 in)	27 of 100 (Routine)
Echo	United States	Record low maximum temperature	18.3 C (64.9 F)	27 of 100 (Routine)
Trichur	India	Record daily precipitation	50.0 mm (2.0 in)	26 of 100 (Routine)
Sawantwadi	India	Record daily precipitation	95.0 mm (3.7 in)	26 of 100 (Routine)
Brevard	United States	Record high minimum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
Huron Rgnl AP	United States	Record high minimum temperature	18.9 C (66.0 F)	26 of 100 (Routine)
Rayachoti	India	Record daily precipitation	55.9 mm (2.2 in)	25 of 100 (Routine)
Toliman	Mexico	Record low minimum temperature	7.8 C (46.0 F)	25 of 100 (Routine)
Auburn	United States	Record low maximum temperature	20.6 C (69.1 F)	25 of 100 (Routine)
Davis 2 WSW Exp Farm	United States	Record low maximum temperature	23.9 C (75.0 F)	25 of 100 (Routine)
Willows 6 W	United States	Record low maximum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Saint Francis	United States	Record high maximum temperature	35.6 C (96.1 F)	25 of 100 (Routine)
Foxpark	United States	Record high minimum temperature	10.0 C (50.0 F)	25 of 100 (Routine)
Thirthahalli	India	Record daily precipitation	40.5 mm (1.6 in)	24 of 100 (Routine)
Sholingur	India	Record daily precipitation	70.0 mm (2.8 in)	24 of 100 (Routine)
A Coruna	Spain	Record high maximum temperature	31.2 C (88.2 F)	24 of 100 (Routine)

Counts by Type and Timescale

591 records

Records set or tied on 20 September 1970 by type: Highest daily maximum 42, Lowest daily maximum 31, Highest daily minimum 118, Lowest daily minimum 20, Heaviest daily rainfall 379, Heaviest daily snowfall 1.

Records on 20 September 1970 by type
Record type	Records
Highest daily maximum	42
Lowest daily maximum	31
Highest daily minimum	118
Lowest daily minimum	20
Heaviest daily rainfall	379
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 20 September 1970 by timescale: all-time 0, monthly 10, daily 581.

How Much Records Were Beaten By

488 broken records

Margins by which the 488 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 88.0. Ties are not counted.

Top 20 by Significance

20 September 1970

Top 20 records on 20 September 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1970	Muloorina Station (Muloorina H, AU	daily rain	29.2 mm (1.1 in)	26.2 mm (1.0 in)	85 years	68 of 100 (Major)
20 September 1970	Podor, SN	daily rain	90.4 mm (3.6 in)	63.3 mm (2.5 in)	48 years	64 of 100 (Major)
20 September 1970	Cook, AU	monthly rain	38.1 mm (1.5 in)	12.7 mm (0.5 in)	50 years	63 of 100 (Major)
20 September 1970	Pingelly, AU	daily rain	30.2 mm (1.2 in)	22.8 mm (0.9 in)	37 years	59 of 100 (Notable)
20 September 1970	Malyalling, AU	daily rain	29.5 mm (1.2 in)	21.1 mm (0.8 in)	43 years	58 of 100 (Notable)
20 September 1970	Mullewa, AU	daily rain	29.5 mm (1.2 in)	21.4 mm (0.8 in)	28 years	55 of 100 (Notable)
20 September 1970	Albany, AU	monthly rain	79.8 mm (3.1 in)	17.1 mm (0.7 in)	43 years	55 of 100 (Notable)
20 September 1970	Fargo Hector Intl AP, US	daily rain	72.6 mm (2.9 in)	66.5 mm (2.6 in)	21 years	54 of 100 (Notable)
20 September 1970	Hyden, AU	daily rain	27.9 mm (1.1 in)	23.3 mm (0.9 in)	28 years	52 of 100 (Notable)
20 September 1970	Kandalaksa, RU	daily rain	27.8 mm (1.1 in)	13.0 mm (0.5 in)	52 years	52 of 100 (Notable)
20 September 1970	Manypeaks, AU	daily rain	47.8 mm (1.9 in)	31.3 mm (1.2 in)	15 years	48 of 100 (Notable)
20 September 1970	Great Falls, CA	daily rain	54.6 mm (2.1 in)	40.9 mm (1.6 in)	16 years	48 of 100 (Notable)
20 September 1970	Winnipeg Richardson Int'l A, CA	daily rain	51.1 mm (2.0 in)	34.8 mm (1.4 in)	16 years	47 of 100 (Notable)
20 September 1970	Ron, IN	daily rain	93.5 mm (3.7 in)	41.4 mm (1.6 in)	61 years	46 of 100 (Notable)
20 September 1970	Madhubani, IN	daily rain	135.0 mm (5.3 in)	88.0 mm (3.5 in)	28 years	45 of 100 (Notable)
20 September 1970	Karaganda, KZ	daily rain	26.2 mm (1.0 in)	21.6 mm (0.9 in)	4 years	44 of 100 (Notable)
20 September 1970	Summit, US	daily rain	27.4 mm (1.1 in)	16.0 mm (0.6 in)	60 years	43 of 100 (Notable)
20 September 1970	Cranganore, IN	daily rain	87.0 mm (3.4 in)	37.5 mm (1.5 in)	52 years	39 of 100 (Notable)
20 September 1970	Col du Grand St-Bernard, CH	daily high min	8.0 C (46.4 F)	1.8 C (3.2 F)	85 years	39 of 100 (Notable)
20 September 1970	Strasbourg, CA	daily rain	25.7 mm (1.0 in)	15.8 mm (0.6 in)	37 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

1812 to 1970

Records set or tied on this calendar date in each year from 1812 to 1970. 1970 had 591 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 1970-09-20: 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 20	464
20 to 40	19
40 to 60	2
60 to 80	2
80 to 100	1