Weather Records on 31 August 1970

558 weather records were set or tied worldwide on 31 August 1970. Highest significance: Tamenlong, IN.

Key Facts for 31 August 1970

On 31 August 1970, 558 weather records were set or tied at long-record stations worldwide.
173 were record highs and 78 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 547 daily.
Tamenlong set a daily record precipitation of 210.0 mm (8.3 in) on 31 August 1970.
Across 165 earlier years (1796 to 2026) the same calendar date averaged 435 records.

Record Map

558 stations

558 station records on 31 August 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 August 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tamenlong	India	Record daily precipitation	210.0 mm (8.3 in)	54 of 100 (Notable)
Patrocinio Do Muriae	Brazil	Record daily precipitation	31.8 mm (1.3 in)	53 of 100 (Notable)
Umaria	India	Record daily precipitation	163.7 mm (6.4 in)	50 of 100 (Notable)
Caiana	Brazil	Record daily precipitation	50.0 mm (2.0 in)	49 of 100 (Notable)
Dansville	United States	Record daily precipitation	57.2 mm (2.3 in)	49 of 100 (Notable)
Sao Fidelis (Pcd)	Brazil	Record daily precipitation	32.0 mm (1.3 in)	47 of 100 (Notable)
Porciuncula	Brazil	Record daily precipitation	26.0 mm (1.0 in)	46 of 100 (Notable)
Itamarati-SE	Brazil	Record daily precipitation	61.6 mm (2.4 in)	46 of 100 (Notable)
Shnoh	Armenia	Record daily precipitation	26.5 mm (1.0 in)	44 of 100 (Notable)
Chatsu	India	Record daily precipitation	108.0 mm (4.3 in)	44 of 100 (Notable)
Haskinville	United States	Record daily precipitation	56.9 mm (2.2 in)	44 of 100 (Notable)
Nawanshahr	India	Record daily precipitation	134.0 mm (5.3 in)	42 of 100 (Notable)
Durham	United Kingdom	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Pedro Barros	Brazil	Record daily precipitation	40.4 mm (1.6 in)	41 of 100 (Notable)
Barra Mansa	Brazil	Record daily precipitation	30.4 mm (1.2 in)	39 of 100 (Notable)
Hemlock	United States	Record daily precipitation	55.4 mm (2.2 in)	39 of 100 (Notable)
Renovo	United States	Record daily precipitation	30.2 mm (1.2 in)	39 of 100 (Notable)
Shorja	Armenia	Record daily precipitation	28.1 mm (1.1 in)	38 of 100 (Notable)
Conselheiro Paulino	Brazil	Record daily precipitation	26.8 mm (1.1 in)	38 of 100 (Notable)
Luz (Estacao)	Brazil	Record daily precipitation	35.2 mm (1.4 in)	38 of 100 (Notable)
Dharmanagar	India	Record daily precipitation	101.6 mm (4.0 in)	38 of 100 (Notable)
Winkelman 6 S	United States	Record high maximum temperature	42.8 C (109.0 F)	38 of 100 (Notable)
Liberty 1 NE	United States	Record daily precipitation	63.2 mm (2.5 in)	38 of 100 (Notable)
Tbilisi	Georgia	Record low maximum temperature	17.9 C (64.2 F)	37 of 100 (Notable)
Odzun	Armenia	Record daily precipitation	28.5 mm (1.1 in)	36 of 100 (Notable)
Roseira	Brazil	Record daily precipitation	29.3 mm (1.2 in)	36 of 100 (Notable)
Tarko-Sale	Russia	Record daily precipitation	28.0 mm (1.1 in)	35 of 100 (Notable)
Montrose	United States	Record daily precipitation	69.6 mm (2.7 in)	35 of 100 (Notable)
Hatteras	United States	Record high maximum temperature	32.8 C (91.0 F)	35 of 100 (Notable)
Little Swanport (Lisdillon)	Australia	Record daily precipitation	29.0 mm (1.1 in)	34 of 100 (Routine)
Guaratingueta	Brazil	Record daily precipitation	32.9 mm (1.3 in)	34 of 100 (Routine)
Kane 1NNE	United States	Record daily precipitation	46.5 mm (1.8 in)	34 of 100 (Routine)
Sonahatu	India	Record daily precipitation	72.5 mm (2.9 in)	33 of 100 (Routine)
Calcutta/Alipore	India	Record daily precipitation	104.7 mm (4.1 in)	33 of 100 (Routine)
Whitney Point Lake	United States	Record daily precipitation	53.3 mm (2.1 in)	33 of 100 (Routine)
Ridgway	United States	Record daily precipitation	34.8 mm (1.4 in)	33 of 100 (Routine)
Meadville 1 S	United States	Record daily precipitation	51.1 mm (2.0 in)	32 of 100 (Routine)
Kailua 446	United States	Record high maximum temperature	30.6 C (87.1 F)	32 of 100 (Routine)
Atibaia	Brazil	Record daily precipitation	34.2 mm (1.3 in)	31 of 100 (Routine)
Hussainabad	India	Record daily precipitation	50.0 mm (2.0 in)	31 of 100 (Routine)
Shahpura	India	Record daily precipitation	125.0 mm (4.9 in)	31 of 100 (Routine)
Eugenio Lefevre	Brazil	Record daily precipitation	30.0 mm (1.2 in)	30 of 100 (Routine)
Franco da Rocha (Hosp.Juqueri)	Brazil	Record daily precipitation	32.4 mm (1.3 in)	30 of 100 (Routine)
Iguape	Brazil	Record daily precipitation	37.0 mm (1.5 in)	30 of 100 (Routine)
Tuckerton 2 NE	United States	Record high minimum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Forbes (Camp Street)	Australia	Record low maximum temperature	8.9 C (48.0 F)	29 of 100 (Routine)
Nurnberg	Germany	Record high minimum temperature	16.1 C (61.0 F)	29 of 100 (Routine)
Stuart	United States	Record low minimum temperature	18.9 C (66.0 F)	29 of 100 (Routine)
Anchorage	United States	Record high minimum temperature	23.3 C (73.9 F)	29 of 100 (Routine)
Wells	United States	Record high minimum temperature	13.3 C (55.9 F)	29 of 100 (Routine)
Quemado	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Bolivar	United States	Record daily precipitation	30.0 mm (1.2 in)	29 of 100 (Routine)
Guacui	Brazil	Record daily precipitation	39.0 mm (1.5 in)	28 of 100 (Routine)
Bananal (Pcd)	Brazil	Record daily precipitation	30.4 mm (1.2 in)	28 of 100 (Routine)
Usina Pinhal (Eloy Chaves)	Brazil	Record daily precipitation	34.7 mm (1.4 in)	28 of 100 (Routine)
Georgetown 2 E	United States	Record high maximum temperature	36.1 C (97.0 F)	28 of 100 (Routine)
Bagodar I	India	Record daily precipitation	50.2 mm (2.0 in)	27 of 100 (Routine)
Samrala	India	Record daily precipitation	73.0 mm (2.9 in)	27 of 100 (Routine)
Ramgarh	India	Record daily precipitation	47.0 mm (1.9 in)	27 of 100 (Routine)
Salem	United States	Record high minimum temperature	22.8 C (73.0 F)	27 of 100 (Routine)

Counts by Type and Timescale

558 records

Records set or tied on 31 August 1970 by type: Highest daily maximum 38, Lowest daily maximum 36, Highest daily minimum 135, Lowest daily minimum 42, Heaviest daily rainfall 307.

Records on 31 August 1970 by type
Record type	Records
Highest daily maximum	38
Lowest daily maximum	36
Highest daily minimum	135
Lowest daily minimum	42
Heaviest daily rainfall	307
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 August 1970 by timescale: all-time 0, monthly 11, daily 547.

How Much Records Were Beaten By

456 broken records

Margins by which the 456 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 160.5. Ties are not counted.

Top 20 by Significance

31 August 1970

Top 20 records on 31 August 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 August 1970	Tamenlong, IN	daily rain	210.0 mm (8.3 in)	160.5 mm (6.3 in)	33 years	54 of 100 (Notable)
31 August 1970	Patrocinio Do Muriae, BR	daily rain	31.8 mm (1.3 in)	31.8 mm (1.3 in)	33 years	53 of 100 (Notable)
31 August 1970	Umaria, IN	daily rain	163.7 mm (6.4 in)	111.1 mm (4.4 in)	20 years	50 of 100 (Notable)
31 August 1970	Caiana, BR	monthly rain	50.0 mm (2.0 in)	22.0 mm (0.9 in)	1 year	49 of 100 (Notable)
31 August 1970	Dansville, US	daily rain	57.2 mm (2.3 in)	41.2 mm (1.6 in)	13 years	49 of 100 (Notable)
31 August 1970	Sao Fidelis (Pcd), BR	daily rain	32.0 mm (1.3 in)	32.0 mm (1.3 in)	31 years	47 of 100 (Notable)
31 August 1970	Porciuncula, BR	daily rain	26.0 mm (1.0 in)	25.6 mm (1.0 in)	12 years	46 of 100 (Notable)
31 August 1970	Itamarati-SE, BR	daily rain	61.6 mm (2.4 in)	56.0 mm (2.2 in)	12 years	46 of 100 (Notable)
31 August 1970	Shnoh, AM	daily rain	26.5 mm (1.0 in)	23.2 mm (0.9 in)	29 years	44 of 100 (Notable)
31 August 1970	Chatsu, IN	daily rain	108.0 mm (4.3 in)	68.6 mm (2.7 in)	16 years	44 of 100 (Notable)
31 August 1970	Haskinville, US	daily rain	56.9 mm (2.2 in)	38.6 mm (1.5 in)	3 years	44 of 100 (Notable)
31 August 1970	Nawanshahr, IN	daily rain	134.0 mm (5.3 in)	46.4 mm (1.8 in)	59 years	42 of 100 (Notable)
31 August 1970	Durham, GB	daily high min	15.6 C (60.1 F)	2.1 C (3.8 F)	83 years	42 of 100 (Notable)
31 August 1970	Pedro Barros, BR	daily rain	40.4 mm (1.6 in)	24.7 mm (1.0 in)	12 years	41 of 100 (Notable)
31 August 1970	Barra Mansa, BR	daily rain	30.4 mm (1.2 in)	25.4 mm (1.0 in)	12 years	39 of 100 (Notable)
31 August 1970	Hemlock, US	daily rain	55.4 mm (2.2 in)	14.8 mm (0.6 in)	60 years	39 of 100 (Notable)
31 August 1970	Renovo, US	daily rain	30.2 mm (1.2 in)	14.7 mm (0.6 in)	68 years	39 of 100 (Notable)
31 August 1970	Shorja, AM	daily rain	28.1 mm (1.1 in)	19.3 mm (0.8 in)	21 years	38 of 100 (Notable)
31 August 1970	Conselheiro Paulino, BR	daily rain	26.8 mm (1.1 in)	21.7 mm (0.9 in)	16 years	38 of 100 (Notable)
31 August 1970	Luz (Estacao), BR	daily rain	35.2 mm (1.4 in)	13.9 mm (0.5 in)	59 years	38 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

1796 to 1970

Records set or tied on this calendar date in each year from 1796 to 1970. 1970 had 558 records.

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

Records on 08-31 in each year
Year	Records
1796	1
1806	1
1807	2
1813	1
1814	1
1816	1
1827	1
1836	1
1846	1
1849	1
1851	1
1856	2
1858	1
1859	1
1860	1
1861	1
1863	1
1867	1
1869	1
1873	1
1875	1
1876	1
1877	2
1879	2
1881	3
1882	2
1885	1
1886	5
1887	1
1889	1
1890	2
1892	3
1893	1
1894	1
1895	1
1896	1
1897	5
1898	10
1899	4
1900	3
1901	5
1902	5
1903	16
1904	13
1905	8
1906	47
1907	6
1908	12
1909	39
1910	20
1911	31
1912	34
1913	40
1914	23
1915	71
1916	7
1917	60
1918	58
1919	25
1920	46
1921	86
1922	58
1923	63
1924	232
1925	111
1926	148
1927	103
1928	201
1929	300
1930	243
1931	192
1932	807
1933	424
1934	381
1935	540
1936	226
1937	508
1938	324
1939	296
1940	400
1941	528
1942	422
1943	650
1944	638
1945	572
1946	545
1947	473
1948	367
1949	409
1950	662
1951	910
1952	388
1953	1,054
1954	633
1955	539
1956	734
1957	317
1958	417
1959	496
1960	366
1961	625
1962	432
1963	415
1964	591
1965	886
1966	830
1967	952
1968	562
1969	474
1970	558
1971	326
1972	287
1973	793
1974	587
1975	658
1976	732
1977	621
1978	891
1979	400
1980	701
1981	692
1982	586
1983	788
1984	866
1985	854
1986	1,218
1987	836
1988	570
1989	622
1990	966
1991	848
1992	1,274
1993	1,286
1994	1,139
1995	1,077
1996	1,451
1997	943
1998	1,163
1999	988
2000	1,545
2001	944
2002	852
2003	1,232
2004	963
2005	1,782
2006	1,147
2007	1,110
2008	870
2009	1,224
2010	1,490
2011	994
2012	932
2013	771
2014	458
2015	1,074
2016	599
2017	596
2018	366
2019	781
2020	737
2021	553
2022	1,191
2023	600
2024	766
2025	307
2026	595

Download the Data

Data for records on 1970-08-31: 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	432
25 to 50	19
50 to 75	3
75 to 100	0
100 to 125	1
125 to 150	0
150 to 175	1