Weather Records on 21 October 1970

548 weather records were set or tied worldwide on 21 October 1970. Highest significance: Eraniel, IN.

Key Facts for 21 October 1970

On 21 October 1970, 548 weather records were set or tied at long-record stations worldwide.
46 were record highs and 108 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 539 daily.
Eraniel set a daily record precipitation of 169.5 mm (6.7 in) on 21 October 1970.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 419 records.

Record Map

548 stations

548 station records on 21 October 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Eraniel	India	Record daily precipitation	169.5 mm (6.7 in)	59 of 100 (Notable)
Premer Post Office	Australia	Record daily precipitation	83.1 mm (3.3 in)	58 of 100 (Notable)
Cassilis Post Office	Australia	Record daily precipitation	57.9 mm (2.3 in)	56 of 100 (Notable)
Dahlonega 4WSW	United States	Record daily precipitation	64.0 mm (2.5 in)	55 of 100 (Notable)
Warren (Mumblebone)	Australia	Record daily precipitation	53.3 mm (2.1 in)	54 of 100 (Notable)
Tahlee (Carrington (Church St)	Australia	Record daily precipitation	72.6 mm (2.9 in)	54 of 100 (Notable)
Merriwa (Merry Vale)	Australia	Record daily precipitation	54.1 mm (2.1 in)	53 of 100 (Notable)
Batesburg	United States	Record daily precipitation	62.5 mm (2.5 in)	52 of 100 (Notable)
Gulgong Post Office	Australia	Record daily precipitation	71.6 mm (2.8 in)	51 of 100 (Notable)
Warren (Eenaweena)	Australia	Record daily precipitation	79.0 mm (3.1 in)	50 of 100 (Notable)
Puthendam	India	Record daily precipitation	197.0 mm (7.8 in)	50 of 100 (Notable)
Tartu-Toravere	Estonia	Record daily precipitation	25.7 mm (1.0 in)	48 of 100 (Notable)
Gilgandra (Chelmsford Ave)	Australia	Record daily precipitation	48.3 mm (1.9 in)	47 of 100 (Notable)
Red Range (Victoria St)	Australia	Record daily precipitation	54.4 mm (2.1 in)	47 of 100 (Notable)
Lymington (Fattys Lane)	Australia	Record daily precipitation	48.3 mm (1.9 in)	47 of 100 (Notable)
Belltrees Homestead	Australia	Record daily precipitation	33.5 mm (1.3 in)	46 of 100 (Notable)
Fort Cochin	India	Record daily precipitation	108.8 mm (4.3 in)	46 of 100 (Notable)
Weabonga (Monomeeth)	Australia	Record daily precipitation	33.5 mm (1.3 in)	45 of 100 (Notable)
Shorlakode	India	Record daily precipitation	175.1 mm (6.9 in)	45 of 100 (Notable)
Deepwater Post Office	Australia	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Merriwa (Gummun Place)	Australia	Record daily precipitation	45.2 mm (1.8 in)	44 of 100 (Notable)
Wellington (Agrowplow)	Australia	Record daily precipitation	40.4 mm (1.6 in)	44 of 100 (Notable)
P.P. Channel	India	Record daily precipitation	140.3 mm (5.5 in)	44 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record low maximum temperature	-8.8 C (16.2 F)	44 of 100 (Notable)
Muscle Creek (Clendinning)	Australia	Record daily precipitation	59.4 mm (2.3 in)	43 of 100 (Notable)
Simplicio Mendes	Brazil	Record daily precipitation	34.4 mm (1.4 in)	42 of 100 (Notable)
Port Macquarie (Bellevue Garde	Australia	Record daily precipitation	98.8 mm (3.9 in)	41 of 100 (Notable)
Blackville (Krui Vale)	Australia	Record daily precipitation	64.3 mm (2.5 in)	41 of 100 (Notable)
Coolah (Binnia St)	Australia	Record daily precipitation	40.6 mm (1.6 in)	41 of 100 (Notable)
Quambone (Sandy Camp)	Australia	Record daily precipitation	40.6 mm (1.6 in)	39 of 100 (Notable)
Croppa Creek (Krui Plains)	Australia	Record daily precipitation	34.3 mm (1.4 in)	39 of 100 (Notable)
Tambar Springs Post Office	Australia	Record daily precipitation	62.2 mm (2.4 in)	39 of 100 (Notable)
Harrisburg Capital City AP	United States	Record daily precipitation	41.7 mm (1.6 in)	39 of 100 (Notable)
Pittsburgh WSO City	United States	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Merriwa (Bowglen)	Australia	Record daily precipitation	45.2 mm (1.8 in)	37 of 100 (Notable)
Dunedoo Post Office	Australia	Record daily precipitation	41.9 mm (1.6 in)	37 of 100 (Notable)
Kaliyal	India	Record daily precipitation	69.6 mm (2.7 in)	37 of 100 (Notable)
Thadikarekonam	India	Record daily precipitation	146.0 mm (5.7 in)	37 of 100 (Notable)
Charlottesville 1 W	United States	Record daily precipitation	49.5 mm (1.9 in)	37 of 100 (Notable)
Leyburn Post Office	Australia	Record daily precipitation	46.2 mm (1.8 in)	36 of 100 (Notable)
Goonumbla (Coradgery)	Australia	Record daily precipitation	52.3 mm (2.1 in)	36 of 100 (Notable)
Thiruvananthapuram	India	Record daily precipitation	102.3 mm (4.0 in)	36 of 100 (Notable)
Meycode Adandai	India	Record daily precipitation	221.9 mm (8.7 in)	36 of 100 (Notable)
Tarome	Australia	Record daily precipitation	47.0 mm (1.9 in)	35 of 100 (Notable)
Narromine (Mumble Peg)	Australia	Record daily precipitation	51.6 mm (2.0 in)	35 of 100 (Notable)
Aberfoyle	Australia	Record daily precipitation	37.1 mm (1.5 in)	35 of 100 (Notable)
Mulakumood	India	Record daily precipitation	118.2 mm (4.7 in)	35 of 100 (Notable)
Arukutty	India	Record daily precipitation	184.7 mm (7.3 in)	34 of 100 (Routine)
Thuckalay	India	Record daily precipitation	102.8 mm (4.0 in)	34 of 100 (Routine)
Dorado 2 WNW	Puerto Rico [United States]	Record daily precipitation	64.0 mm (2.5 in)	34 of 100 (Routine)
Yangan Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	33 of 100 (Routine)
Nevertire (Beverley)	Australia	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Warren (Haddon Rig)	Australia	Record daily precipitation	37.3 mm (1.5 in)	33 of 100 (Routine)
Emmaville Post Office	Australia	Record daily precipitation	41.1 mm (1.6 in)	33 of 100 (Routine)
Copmanhurst Post Office	Australia	Record daily precipitation	50.8 mm (2.0 in)	33 of 100 (Routine)
Allora Post Office	Australia	Record daily precipitation	43.7 mm (1.7 in)	32 of 100 (Routine)
Hillgrove (Hillview)	Australia	Record daily precipitation	34.0 mm (1.3 in)	32 of 100 (Routine)
Telegraph Point (Farrawells Ro	Australia	Record daily precipitation	64.8 mm (2.6 in)	32 of 100 (Routine)
Owens Gap (T.O.K.)	Australia	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Rusel-Irlmoos	Germany	Record daily precipitation	54.8 mm (2.2 in)	32 of 100 (Routine)

Counts by Type and Timescale

548 records

Records set or tied on 21 October 1970 by type: Highest daily maximum 12, Lowest daily maximum 78, Highest daily minimum 34, Lowest daily minimum 30, Heaviest daily rainfall 391, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 21 October 1970 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	78
Highest daily minimum	34
Lowest daily minimum	30
Heaviest daily rainfall	391
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 21 October 1970 by timescale: all-time 0, monthly 9, daily 539.

How Much Records Were Beaten By

491 broken records

Margins by which the 491 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 134.8. Ties are not counted.

Top 20 by Significance

21 October 1970

Top 20 records on 21 October 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1970	Eraniel, IN	daily rain	169.5 mm (6.7 in)	105.5 mm (4.2 in)	40 years	59 of 100 (Notable)
21 October 1970	Premer Post Office, AU	monthly rain	83.1 mm (3.3 in)	23.9 mm (0.9 in)	59 years	58 of 100 (Notable)
21 October 1970	Cassilis Post Office, AU	daily rain	57.9 mm (2.3 in)	34.0 mm (1.3 in)	35 years	56 of 100 (Notable)
21 October 1970	Dahlonega 4WSW, US	daily rain	64.0 mm (2.5 in)	43.4 mm (1.7 in)	71 years	55 of 100 (Notable)
21 October 1970	Warren (Mumblebone), AU	daily rain	53.3 mm (2.1 in)	22.3 mm (0.9 in)	71 years	54 of 100 (Notable)
21 October 1970	Tahlee (Carrington (Church St), AU	daily rain	72.6 mm (2.9 in)	32.0 mm (1.3 in)	60 years	54 of 100 (Notable)
21 October 1970	Merriwa (Merry Vale), AU	daily rain	54.1 mm (2.1 in)	26.2 mm (1.0 in)	64 years	53 of 100 (Notable)
21 October 1970	Batesburg, US	daily rain	62.5 mm (2.5 in)	46.0 mm (1.8 in)	52 years	52 of 100 (Notable)
21 October 1970	Gulgong Post Office, AU	monthly rain	71.6 mm (2.8 in)	6.8 mm (0.27 in)	88 years	51 of 100 (Notable)
21 October 1970	Warren (Eenaweena), AU	monthly rain	79.0 mm (3.1 in)	18.0 mm (0.7 in)	45 years	50 of 100 (Notable)
21 October 1970	Puthendam, IN	daily rain	197.0 mm (7.8 in)	134.8 mm (5.3 in)	16 years	50 of 100 (Notable)
21 October 1970	Tartu-Toravere, EE	daily rain	25.7 mm (1.0 in)	15.5 mm (0.6 in)	21 years	48 of 100 (Notable)
21 October 1970	Gilgandra (Chelmsford Ave), AU	daily rain	48.3 mm (1.9 in)	17.6 mm (0.7 in)	71 years	47 of 100 (Notable)
21 October 1970	Red Range (Victoria St), AU	daily rain	54.4 mm (2.1 in)	17.6 mm (0.7 in)	79 years	47 of 100 (Notable)
21 October 1970	Lymington (Fattys Lane), AU	daily rain	48.3 mm (1.9 in)	20.9 mm (0.8 in)	37 years	47 of 100 (Notable)
21 October 1970	Belltrees Homestead, AU	daily rain	33.5 mm (1.3 in)	17.8 mm (0.7 in)	79 years	46 of 100 (Notable)
21 October 1970	Fort Cochin, IN	daily rain	108.8 mm (4.3 in)	58.3 mm (2.3 in)	48 years	46 of 100 (Notable)
21 October 1970	Weabonga (Monomeeth), AU	daily rain	33.5 mm (1.3 in)	20.3 mm (0.8 in)	60 years	45 of 100 (Notable)
21 October 1970	Shorlakode, IN	daily rain	175.1 mm (6.9 in)	124.3 mm (4.9 in)	3 years	45 of 100 (Notable)
21 October 1970	Deepwater Post Office, AU	daily rain	41.9 mm (1.6 in)	15.2 mm (0.6 in)	79 years	44 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

1795 to 1970

Records set or tied on this calendar date in each year from 1795 to 1970. 1970 had 548 records.

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

Records on 10-21 in each year
Year	Records
1795	1
1802	2
1805	1
1808	1
1810	1
1834	1
1835	1
1840	1
1845	1
1847	1
1850	1
1851	2
1854	1
1859	1
1863	1
1864	1
1866	3
1867	1
1868	3
1869	2
1871	1
1872	1
1873	1
1874	1
1876	4
1877	2
1878	1
1880	3
1881	1
1883	1
1886	1
1888	2
1889	2
1890	3
1891	6
1892	6
1893	1
1894	1
1895	2
1896	5
1898	6
1899	3
1900	2
1901	9
1902	2
1903	3
1904	30
1905	15
1906	11
1907	35
1908	35
1909	19
1910	21
1911	10
1912	18
1913	59
1914	35
1915	43
1916	70
1917	208
1918	18
1919	102
1920	149
1921	58
1922	78
1923	81
1924	389
1925	150
1926	77
1927	187
1928	78
1929	200
1930	492
1931	217
1932	165
1933	733
1934	407
1935	707
1936	407
1937	132
1938	121
1939	491
1940	537
1941	644
1942	258
1943	421
1944	367
1945	538
1946	297
1947	977
1948	266
1949	1,015
1950	438
1951	382
1952	848
1953	1,579
1954	279
1955	481
1956	276
1957	511
1958	322
1959	410
1960	408
1961	553
1962	359
1963	725
1964	457
1965	465
1966	425
1967	472
1968	174
1969	881
1970	548
1971	498
1972	813
1973	464
1974	866
1975	509
1976	1,467
1977	451
1978	616
1979	1,958
1980	378
1981	667
1982	870
1983	786
1984	1,872
1985	776
1986	814
1987	852
1988	696
1989	1,668
1990	807
1991	877
1992	1,095
1993	845
1994	670
1995	1,120
1996	1,581
1997	915
1998	711
1999	688
2000	771
2001	610
2002	1,241
2003	2,066
2004	1,674
2005	949
2006	1,057
2007	916
2008	610
2009	713
2010	710
2011	662
2012	703
2013	440
2014	716
2015	493
2016	734
2017	750
2018	440
2019	757
2020	1,135
2021	574
2022	629
2023	890
2024	1,138
2025	364

Download the Data

Data for records on 1970-10-21: 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	428
20 to 40	48
40 to 60	8
60 to 80	3
80 to 100	1
100 to 120	1
120 to 140	2