Weather Records on 31 July 1970

576 weather records were set or tied worldwide on 31 July 1970. Highest significance: Tiruvallur, IN.

Key Facts for 31 July 1970

On 31 July 1970, 576 weather records were set or tied at long-record stations worldwide.
288 were record highs and 70 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 571 daily.
Tiruvallur set a monthly record daily precipitation of 143.0 mm (5.6 in) on 31 July 1970.
Across 155 earlier years (1804 to 2026) the same calendar date averaged 470 records.

Record Map

576 stations

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

Weather records on 31 July 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tiruvallur	India	Record daily precipitation	143.0 mm (5.6 in)	73 of 100 (Major)
Lichtentanne	Germany	Record daily precipitation	89.3 mm (3.5 in)	55 of 100 (Notable)
Macknade Sugar Mill	Australia	Record daily precipitation	36.1 mm (1.4 in)	52 of 100 (Notable)
Kaca	Russia	Record daily precipitation	53.1 mm (2.1 in)	52 of 100 (Notable)
Ozernaja	Russia	Record daily precipitation	54.8 mm (2.2 in)	52 of 100 (Notable)
Peterborough	Australia	Record daily precipitation	32.0 mm (1.3 in)	50 of 100 (Notable)
Mt Vernon	United States	Record daily precipitation	81.0 mm (3.2 in)	50 of 100 (Notable)
Metten	Germany	Record daily precipitation	37.5 mm (1.5 in)	48 of 100 (Notable)
Wallajah	India	Record daily precipitation	174.2 mm (6.9 in)	48 of 100 (Notable)
Ingham Post Office	Australia	Record daily precipitation	31.8 mm (1.3 in)	47 of 100 (Notable)
Victoria Sugar Mill	Australia	Record daily precipitation	44.2 mm (1.7 in)	47 of 100 (Notable)
St Charles de Mandeville	Canada	Record daily precipitation	50.3 mm (2.0 in)	46 of 100 (Notable)
Albanel	Canada	Record daily precipitation	54.6 mm (2.1 in)	46 of 100 (Notable)
Hausstein	Germany	Record daily precipitation	71.7 mm (2.8 in)	46 of 100 (Notable)
Normandin Cda	Canada	Record daily precipitation	62.2 mm (2.4 in)	45 of 100 (Notable)
Newark Ag Farm	United States	Record daily precipitation	72.1 mm (2.8 in)	45 of 100 (Notable)
Halifax Macrossan St	Australia	Record daily precipitation	39.9 mm (1.6 in)	44 of 100 (Notable)
Sivaganga	India	Record daily precipitation	67.0 mm (2.6 in)	44 of 100 (Notable)
Elkton	United States	Record daily precipitation	71.4 mm (2.8 in)	44 of 100 (Notable)
Appleton	United States	Record daily precipitation	41.7 mm (1.6 in)	44 of 100 (Notable)
Northampton	Australia	Record daily precipitation	30.2 mm (1.2 in)	43 of 100 (Notable)
Vellore	India	Record daily precipitation	59.3 mm (2.3 in)	43 of 100 (Notable)
Sholingur	India	Record daily precipitation	75.0 mm (3.0 in)	43 of 100 (Notable)
Aktobe	Kazakhstan	Record daily precipitation	25.1 mm (1.0 in)	43 of 100 (Notable)
Karthaus River	United States	Record daily precipitation	38.9 mm (1.5 in)	43 of 100 (Notable)
Cap Chat	Canada	Record daily precipitation	54.1 mm (2.1 in)	42 of 100 (Notable)
Willigulli North	Australia	Record daily precipitation	26.2 mm (1.0 in)	41 of 100 (Notable)
Melur	India	Record daily precipitation	57.4 mm (2.3 in)	41 of 100 (Notable)
Chapala	Mexico	Record daily precipitation	47.0 mm (1.9 in)	41 of 100 (Notable)
Kavali	India	Record daily precipitation	37.5 mm (1.5 in)	40 of 100 (Notable)
Wellsboro 4 SW	United States	Record daily precipitation	41.9 mm (1.6 in)	39 of 100 (Notable)
Darauli	India	Record daily precipitation	124.0 mm (4.9 in)	38 of 100 (Notable)
Ulu-Teljak	Russia	Record daily precipitation	35.7 mm (1.4 in)	38 of 100 (Notable)
Huntingdon	Canada	Record high minimum temperature	21.1 C (70.0 F)	37 of 100 (Notable)
Rusel-Irlmoos	Germany	Record daily precipitation	56.8 mm (2.2 in)	37 of 100 (Notable)
Bowes	Australia	Record daily precipitation	30.7 mm (1.2 in)	35 of 100 (Notable)
Bemerside	Australia	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Lucinda Township	Australia	Record daily precipitation	37.1 mm (1.5 in)	35 of 100 (Notable)
St Fereol	Canada	Record daily precipitation	55.6 mm (2.2 in)	35 of 100 (Notable)
Moncton	Canada	Record high minimum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Dindigul	India	Record daily precipitation	28.1 mm (1.1 in)	35 of 100 (Notable)
Hollenstein (Kraftwerk)	Germany	Record daily precipitation	29.7 mm (1.2 in)	34 of 100 (Routine)
Arni	India	Record daily precipitation	68.8 mm (2.7 in)	34 of 100 (Routine)
North Bay	Canada	Record high minimum temperature	22.8 C (73.0 F)	33 of 100 (Routine)
Nedumangad	India	Record daily precipitation	96.5 mm (3.8 in)	33 of 100 (Routine)
Srimushnam	India	Record daily precipitation	55.0 mm (2.2 in)	33 of 100 (Routine)
Kirksville	United States	Record high maximum temperature	39.4 C (102.9 F)	33 of 100 (Routine)
Chambersburg 1 ESE	United States	Record daily precipitation	41.1 mm (1.6 in)	33 of 100 (Routine)
Durham	Canada	Record high minimum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
Penugondapuram	India	Record daily precipitation	62.0 mm (2.4 in)	32 of 100 (Routine)
Lebanon 2W	United States	Record high minimum temperature	25.0 C (77.0 F)	32 of 100 (Routine)
Manchester	United States	Record high maximum temperature	33.9 C (93.0 F)	32 of 100 (Routine)
Conshohocken	United States	Record daily precipitation	54.6 mm (2.1 in)	32 of 100 (Routine)
Mannington 1 N	United States	Record daily precipitation	43.7 mm (1.7 in)	32 of 100 (Routine)
Halle	Germany	Record daily precipitation	44.6 mm (1.8 in)	31 of 100 (Routine)
Greenville	United States	Record daily precipitation	51.1 mm (2.0 in)	31 of 100 (Routine)
Avalon Pleasure Pier	United States	Record low minimum temperature	10.0 C (50.0 F)	31 of 100 (Routine)
Orono	United States	Record high minimum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Holbrook	United States	Record high minimum temperature	26.1 C (79.0 F)	30 of 100 (Routine)
Phoenixville 1 E	United States	Record daily precipitation	40.4 mm (1.6 in)	30 of 100 (Routine)

Counts by Type and Timescale

576 records

Records set or tied on 31 July 1970 by type: Highest daily maximum 81, Lowest daily maximum 21, Highest daily minimum 207, Lowest daily minimum 49, Heaviest daily rainfall 218.

Records on 31 July 1970 by type
Record type	Records
Highest daily maximum	81
Lowest daily maximum	21
Highest daily minimum	207
Lowest daily minimum	49
Heaviest daily rainfall	218
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 July 1970 by timescale: all-time 0, monthly 5, daily 571.

How Much Records Were Beaten By

419 broken records

Margins by which the 419 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 143.2. Ties are not counted.

Top 20 by Significance

31 July 1970

Top 20 records on 31 July 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 1970	Tiruvallur, IN	monthly rain	143.0 mm (5.6 in)	48.5 mm (1.9 in)	55 years	73 of 100 (Major)
31 July 1970	Lichtentanne, DE	daily rain	89.3 mm (3.5 in)	75.4 mm (3.0 in)	16 years	55 of 100 (Notable)
31 July 1970	Macknade Sugar Mill, AU	daily rain	36.1 mm (1.4 in)	26.7 mm (1.1 in)	53 years	52 of 100 (Notable)
31 July 1970	Kaca, RU	daily rain	53.1 mm (2.1 in)	33.1 mm (1.3 in)	31 years	52 of 100 (Notable)
31 July 1970	Ozernaja, RU	daily rain	54.8 mm (2.2 in)	40.3 mm (1.6 in)	32 years	52 of 100 (Notable)
31 July 1970	Peterborough, AU	daily rain	32.0 mm (1.3 in)	14.5 mm (0.6 in)	64 years	50 of 100 (Notable)
31 July 1970	Mt Vernon, US	daily rain	81.0 mm (3.2 in)	48.0 mm (1.9 in)	32 years	50 of 100 (Notable)
31 July 1970	Metten, DE	daily rain	37.5 mm (1.5 in)	21.2 mm (0.8 in)	49 years	48 of 100 (Notable)
31 July 1970	Wallajah, IN	daily rain	174.2 mm (6.9 in)	143.2 mm (5.6 in)	5 years	48 of 100 (Notable)
31 July 1970	Ingham Post Office, AU	daily rain	31.8 mm (1.3 in)	24.7 mm (1.0 in)	53 years	47 of 100 (Notable)
31 July 1970	Victoria Sugar Mill, AU	daily rain	44.2 mm (1.7 in)	40.6 mm (1.6 in)	1 year	47 of 100 (Notable)
31 July 1970	St Charles de Mandeville, CA	daily rain	50.3 mm (2.0 in)	33.5 mm (1.3 in)	11 years	46 of 100 (Notable)
31 July 1970	Albanel, CA	daily rain	54.6 mm (2.1 in)	34.3 mm (1.4 in)	8 years	46 of 100 (Notable)
31 July 1970	Hausstein, DE	daily rain	71.7 mm (2.8 in)	56.4 mm (2.2 in)	11 years	46 of 100 (Notable)
31 July 1970	Normandin Cda, CA	daily rain	62.2 mm (2.4 in)	39.8 mm (1.6 in)	8 years	45 of 100 (Notable)
31 July 1970	Newark Ag Farm, US	daily rain	72.1 mm (2.8 in)	54.8 mm (2.2 in)	20 years	45 of 100 (Notable)
31 July 1970	Halifax Macrossan St, AU	daily rain	39.9 mm (1.6 in)	25.9 mm (1.0 in)	53 years	44 of 100 (Notable)
31 July 1970	Sivaganga, IN	daily rain	67.0 mm (2.6 in)	41.3 mm (1.6 in)	44 years	44 of 100 (Notable)
31 July 1970	Elkton, US	daily rain	71.4 mm (2.8 in)	47.3 mm (1.9 in)	43 years	44 of 100 (Notable)
31 July 1970	Appleton, US	daily rain	41.7 mm (1.6 in)	24.2 mm (1.0 in)	56 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

1804 to 1970

Records set or tied on this calendar date in each year from 1804 to 1970. 1970 had 576 records.

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

Records on 07-31 in each year
Year	Records
1804	1
1815	1
1816	1
1828	1
1834	1
1839	1
1840	1
1841	2
1851	1
1858	2
1860	4
1863	1
1866	1
1873	2
1876	1
1879	1
1884	1
1885	1
1886	1
1887	5
1889	2
1890	2
1891	1
1892	1
1893	3
1894	2
1896	2
1897	2
1898	5
1900	1
1901	3
1902	4
1903	16
1904	12
1905	10
1906	14
1907	17
1908	22
1909	15
1910	21
1911	29
1912	14
1913	31
1914	28
1915	71
1916	63
1917	126
1918	39
1919	27
1920	168
1921	112
1922	24
1923	236
1924	97
1925	349
1926	226
1927	161
1928	145
1929	134
1930	143
1931	441
1932	314
1933	504
1934	449
1935	418
1936	548
1937	297
1938	417
1939	357
1940	415
1941	323
1942	342
1943	342
1944	312
1945	499
1946	426
1947	341
1948	341
1949	406
1950	511
1951	364
1952	472
1953	414
1954	459
1955	813
1956	574
1957	268
1958	374
1959	424
1960	622
1961	504
1962	348
1963	294
1964	637
1965	858
1966	606
1967	326
1968	637
1969	440
1970	576
1971	1,850
1972	667
1973	583
1974	363
1975	1,386
1976	530
1977	543
1978	754
1979	501
1980	1,047
1981	672
1982	767
1983	901
1984	777
1985	1,065
1986	1,021
1987	934
1988	940
1989	1,753
1990	911
1991	647
1992	1,169
1993	1,031
1994	1,207
1995	1,223
1996	1,084
1997	984
1998	1,195
1999	1,643
2000	1,001
2001	1,414
2002	1,080
2003	1,157
2004	779
2005	742
2006	1,405
2007	1,023
2008	911
2009	1,156
2010	1,485
2011	1,040
2012	712
2013	469
2014	1,000
2015	948
2016	501
2017	485
2018	1,135
2019	551
2020	1,034
2021	1,020
2022	861
2023	671
2024	748
2025	836
2026	754

Download the Data

Data for records on 1970-07-31: 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 20	380
20 to 40	27
40 to 60	10
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1