Weather Records on 20 August 1970

414 weather records were set or tied worldwide on 20 August 1970. Highest significance: Mangrulpir, IN.

Key Facts for 20 August 1970

On 20 August 1970, 414 weather records were set or tied at long-record stations worldwide.
107 were record highs and 94 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 9 monthly and 402 daily.
Mangrulpir set a monthly record daily precipitation of 185.0 mm (7.3 in) on 20 August 1970.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 455 records.

Record Map

414 stations

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

Weather records on 20 August 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mangrulpir	India	Record daily precipitation	185.0 mm (7.3 in)	74 of 100 (Major)
Monticello	United States	Record daily precipitation	80.0 mm (3.1 in)	62 of 100 (Major)
Texarkana Webb Fld	United States	Record daily precipitation	105.2 mm (4.1 in)	62 of 100 (Major)
Metten	Germany	Record daily precipitation	56.0 mm (2.2 in)	60 of 100 (Major)
Ust-Vojampolka	Russia	Record daily precipitation	85.9 mm (3.4 in)	58 of 100 (Notable)
Amalner	India	Record daily precipitation	67.5 mm (2.7 in)	57 of 100 (Notable)
Waynesboro	United States	Record daily precipitation	91.4 mm (3.6 in)	57 of 100 (Notable)
Niphad	India	Record daily precipitation	50.0 mm (2.0 in)	55 of 100 (Notable)
Savannah 6 SW	United States	Record daily precipitation	179.6 mm (7.1 in)	55 of 100 (Notable)
Shahada	India	Record daily precipitation	70.1 mm (2.8 in)	51 of 100 (Notable)
Valod	India	Record daily precipitation	175.0 mm (6.9 in)	50 of 100 (Notable)
Dequeen	United States	Record daily precipitation	110.5 mm (4.4 in)	50 of 100 (Notable)
Durango	United States	Record daily precipitation	34.3 mm (1.4 in)	50 of 100 (Notable)
Cross Plains	United States	Record daily precipitation	55.9 mm (2.2 in)	49 of 100 (Notable)
Pachora	India	Record daily precipitation	100.3 mm (3.9 in)	48 of 100 (Notable)
Martin U of T Branch Exp STN	United States	Record daily precipitation	111.3 mm (4.4 in)	48 of 100 (Notable)
Cochrane	Canada	Record daily precipitation	43.9 mm (1.7 in)	47 of 100 (Notable)
Lenora Coop	United States	Record daily precipitation	45.2 mm (1.8 in)	47 of 100 (Notable)
Betatakin	United States	Record daily precipitation	31.0 mm (1.2 in)	46 of 100 (Notable)
Marayur	India	Record daily precipitation	121.4 mm (4.8 in)	45 of 100 (Notable)
Zimovniki	Russia	Record daily precipitation	36.4 mm (1.4 in)	44 of 100 (Notable)
Glenmorgan	India	Record daily precipitation	73.0 mm (2.9 in)	42 of 100 (Notable)
Durham	United Kingdom	Record daily precipitation	33.3 mm (1.3 in)	42 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record low minimum temperature	4.9 C (40.8 F)	40 of 100 (Notable)
Kentland	United States	Record daily precipitation	43.7 mm (1.7 in)	39 of 100 (Notable)
Hingoli	India	Record daily precipitation	120.0 mm (4.7 in)	38 of 100 (Notable)
Cordova 2 ENE	United States	Record daily precipitation	74.7 mm (2.9 in)	35 of 100 (Notable)
Myton	United States	Record low maximum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Selb/Oberfranken-Lauterbach	Germany	Record daily precipitation	48.1 mm (1.9 in)	34 of 100 (Routine)
Songadh	India	Record daily precipitation	136.0 mm (5.4 in)	34 of 100 (Routine)
Wardha	India	Record daily precipitation	124.0 mm (4.9 in)	34 of 100 (Routine)
Plainville 4WNW	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Hugo	United States	Record daily precipitation	42.4 mm (1.7 in)	34 of 100 (Routine)
Logansport Cicott St	United States	Record daily precipitation	46.0 mm (1.8 in)	33 of 100 (Routine)
Atwood	United States	Record daily precipitation	41.7 mm (1.6 in)	33 of 100 (Routine)
Schenley Lock 5	United States	Record daily precipitation	31.0 mm (1.2 in)	33 of 100 (Routine)
Bonham 3NNE	United States	Record daily precipitation	30.0 mm (1.2 in)	33 of 100 (Routine)
Marathon	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Escalante	United States	Record daily precipitation	35.6 mm (1.4 in)	33 of 100 (Routine)
Burwaha	India	Record daily precipitation	87.2 mm (3.4 in)	32 of 100 (Routine)
Chalisgaon	India	Record daily precipitation	85.5 mm (3.4 in)	32 of 100 (Routine)
Stamps	United States	Record daily precipitation	86.9 mm (3.4 in)	32 of 100 (Routine)
Bansda	India	Record daily precipitation	92.1 mm (3.6 in)	31 of 100 (Routine)
Cambay	India	Record daily precipitation	28.5 mm (1.1 in)	31 of 100 (Routine)
Titimathi	India	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
Fraser	United States	Record high minimum temperature	8.9 C (48.0 F)	31 of 100 (Routine)
Kemptville	Canada	Record daily precipitation	32.5 mm (1.3 in)	30 of 100 (Routine)
Port Hastings	Canada	Record low minimum temperature	6.1 C (43.0 F)	30 of 100 (Routine)
Narva	Estonia	Record low minimum temperature	3.4 C (38.1 F)	30 of 100 (Routine)
Halle	Germany	Record daily precipitation	31.8 mm (1.3 in)	30 of 100 (Routine)
Vada	India	Record daily precipitation	81.0 mm (3.2 in)	30 of 100 (Routine)
Hangal	India	Record daily precipitation	29.3 mm (1.2 in)	29 of 100 (Routine)
Aryankavu	India	Record daily precipitation	60.2 mm (2.4 in)	29 of 100 (Routine)
Gudalur	India	Record daily precipitation	75.8 mm (3.0 in)	29 of 100 (Routine)
Ash Fork 6 N	United States	Record low maximum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Crescent City 3 NNW	United States	Record low maximum temperature	12.8 C (55.0 F)	29 of 100 (Routine)
Westcliffe	United States	Record high minimum temperature	11.7 C (53.1 F)	29 of 100 (Routine)
Belleville	United States	Record daily precipitation	47.0 mm (1.9 in)	29 of 100 (Routine)
Plain Dealing	United States	Record daily precipitation	36.8 mm (1.4 in)	29 of 100 (Routine)
Balmorhea	United States	Record high minimum temperature	26.1 C (79.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

414 records

Records set or tied on 20 August 1970 by type: Highest daily maximum 27, Lowest daily maximum 54, Highest daily minimum 80, Lowest daily minimum 40, Heaviest daily rainfall 213.

Records on 20 August 1970 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	54
Highest daily minimum	80
Lowest daily minimum	40
Heaviest daily rainfall	213
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1970 by timescale: all-time 3, monthly 9, daily 402.

How Much Records Were Beaten By

340 broken records

Margins by which the 340 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 110.2. Ties are not counted.

Top 20 by Significance

20 August 1970

Top 20 records on 20 August 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1970	Mangrulpir, IN	monthly rain	185.0 mm (7.3 in)	61.3 mm (2.4 in)	68 years	74 of 100 (Major)
20 August 1970	Monticello, US	daily rain	80.0 mm (3.1 in)	55.9 mm (2.2 in)	56 years	62 of 100 (Major)
20 August 1970	Texarkana Webb Fld, US	daily rain	105.2 mm (4.1 in)	72.7 mm (2.9 in)	51 years	62 of 100 (Major)
20 August 1970	Metten, DE	daily rain	56.0 mm (2.2 in)	34.7 mm (1.4 in)	39 years	60 of 100 (Major)
20 August 1970	Ust-Vojampolka, RU	all-time rain	85.9 mm (3.4 in)	16.9 mm (0.7 in)	30 years	58 of 100 (Notable)
20 August 1970	Amalner, IN	daily rain	67.5 mm (2.7 in)	46.9 mm (1.8 in)	68 years	57 of 100 (Notable)
20 August 1970	Waynesboro, US	daily rain	91.4 mm (3.6 in)	37.8 mm (1.5 in)	74 years	57 of 100 (Notable)
20 August 1970	Niphad, IN	daily rain	50.0 mm (2.0 in)	37.3 mm (1.5 in)	33 years	55 of 100 (Notable)
20 August 1970	Savannah 6 SW, US	all-time rain	179.6 mm (7.1 in)	15.5 mm (0.6 in)	58 years	55 of 100 (Notable)
20 August 1970	Shahada, IN	daily rain	70.1 mm (2.8 in)	44.7 mm (1.8 in)	23 years	51 of 100 (Notable)
20 August 1970	Valod, IN	daily rain	175.0 mm (6.9 in)	110.2 mm (4.3 in)	12 years	50 of 100 (Notable)
20 August 1970	Dequeen, US	daily rain	110.5 mm (4.4 in)	92.7 mm (3.6 in)	13 years	50 of 100 (Notable)
20 August 1970	Durango, US	daily rain	34.3 mm (1.4 in)	24.6 mm (1.0 in)	33 years	50 of 100 (Notable)
20 August 1970	Cross Plains, US	daily rain	55.9 mm (2.2 in)	54.6 mm (2.1 in)	28 years	49 of 100 (Notable)
20 August 1970	Pachora, IN	daily rain	100.3 mm (3.9 in)	65.2 mm (2.6 in)	4 years	48 of 100 (Notable)
20 August 1970	Martin U of T Branch Exp STN, US	monthly rain	111.3 mm (4.4 in)	47.3 mm (1.9 in)	1 year	48 of 100 (Notable)
20 August 1970	Cochrane, CA	daily rain	43.9 mm (1.7 in)	25.4 mm (1.0 in)	31 years	47 of 100 (Notable)
20 August 1970	Lenora Coop, US	daily rain	45.2 mm (1.8 in)	31.5 mm (1.2 in)	56 years	47 of 100 (Notable)
20 August 1970	Betatakin, US	daily rain	31.0 mm (1.2 in)	22.6 mm (0.9 in)	24 years	46 of 100 (Notable)
20 August 1970	Marayur, IN	daily rain	121.4 mm (4.8 in)	90.8 mm (3.6 in)	0 years	45 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

1797 to 1970

Records set or tied on this calendar date in each year from 1797 to 1970. 1970 had 414 records.

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

Records on 08-20 in each year
Year	Records
1797	1
1807	1
1809	2
1816	1
1830	1
1832	1
1838	1
1840	1
1842	1
1846	1
1849	1
1850	1
1852	1
1858	3
1863	5
1867	4
1870	3
1871	1
1873	1
1875	2
1877	1
1883	2
1884	2
1885	6
1886	1
1888	1
1889	2
1890	2
1891	2
1892	6
1893	1
1894	1
1895	1
1896	5
1897	6
1898	1
1899	5
1900	7
1901	12
1902	3
1903	7
1904	30
1905	7
1906	26
1907	15
1908	21
1909	69
1910	7
1911	18
1912	25
1913	23
1914	15
1915	14
1916	74
1917	51
1918	69
1919	25
1920	47
1921	23
1922	52
1923	83
1924	132
1925	193
1926	187
1927	338
1928	101
1929	213
1930	318
1931	214
1932	299
1933	324
1934	376
1935	339
1936	543
1937	537
1938	250
1939	448
1940	695
1941	230
1942	429
1943	436
1944	355
1945	398
1946	349
1947	988
1948	403
1949	431
1950	1,341
1951	824
1952	425
1953	441
1954	476
1955	848
1956	678
1957	342
1958	281
1959	764
1960	465
1961	520
1962	684
1963	577
1964	629
1965	470
1966	1,094
1967	657
1968	862
1969	608
1970	414
1971	585
1972	522
1973	490
1974	565
1975	411
1976	894
1977	860
1978	563
1979	1,009
1980	991
1981	856
1982	620
1983	1,465
1984	696
1985	666
1986	819
1987	564
1988	991
1989	603
1990	1,262
1991	804
1992	1,168
1993	759
1994	719
1995	1,113
1996	900
1997	1,214
1998	802
1999	810
2000	989
2001	909
2002	1,208
2003	1,031
2004	1,333
2005	1,112
2006	851
2007	1,955
2008	1,170
2009	1,414
2010	1,028
2011	987
2012	1,086
2013	545
2014	582
2015	1,075
2016	872
2017	324
2018	657
2019	698
2020	1,051
2021	1,028
2022	1,038
2023	1,479
2024	589
2025	1,134
2026	985

Download the Data

Data for records on 1970-08-20: 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	287
20 to 40	36
40 to 60	10
60 to 80	4
80 to 100	2
100 to 120	1