Weather Records on 12 August 1983

923 weather records were set or tied worldwide on 12 August 1983. Highest significance: Mt Morris 2W, US.

Key Facts for 12 August 1983

On 12 August 1983, 923 weather records were set or tied at long-record stations worldwide.
354 were record highs and 266 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 31 monthly and 888 daily.
Mt Morris 2W set a monthly record daily precipitation of 94.0 mm (3.7 in) on 12 August 1983.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 445 records.

Record Map

923 stations

923 station records on 12 August 1983 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 August 1983: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mt Morris 2W	United States	Record daily precipitation	94.0 mm (3.7 in)	65 of 100 (Major)
Lowville	United States	Record daily precipitation	72.1 mm (2.8 in)	59 of 100 (Notable)
Krasnaja_Gora	Russia	Record daily precipitation	83.2 mm (3.3 in)	58 of 100 (Notable)
Belfast	United States	Record daily precipitation	56.1 mm (2.2 in)	57 of 100 (Notable)
Clyde Lock 26	United States	Record daily precipitation	71.1 mm (2.8 in)	56 of 100 (Notable)
Manly Vale (Manly Dam)	Australia	Record daily precipitation	56.6 mm (2.2 in)	53 of 100 (Notable)
Grand Lake 6 SSW	United States	Record daily precipitation	30.2 mm (1.2 in)	53 of 100 (Notable)
Newark	United States	Record daily precipitation	59.9 mm (2.4 in)	52 of 100 (Notable)
Svyatoy Nos;Cape(Closed)	Russia	Record daily precipitation	32.0 mm (1.3 in)	51 of 100 (Notable)
Kurilsk	Russia	Record daily precipitation	61.8 mm (2.4 in)	48 of 100 (Notable)
Avon	United States	Record daily precipitation	132.1 mm (5.2 in)	48 of 100 (Notable)
Bennetts Brg	United States	Record daily precipitation	62.2 mm (2.4 in)	47 of 100 (Notable)
Hooker 12 NNW	United States	Record daily precipitation	62.2 mm (2.4 in)	47 of 100 (Notable)
Rochester	United States	Record daily precipitation	60.5 mm (2.4 in)	47 of 100 (Notable)
Woodstock	United States	Record daily precipitation	62.7 mm (2.5 in)	47 of 100 (Notable)
Vallecillo (Smn)	Mexico	Record daily precipitation	40.4 mm (1.6 in)	46 of 100 (Notable)
Midland	Australia	Record daily precipitation	40.2 mm (1.6 in)	45 of 100 (Notable)
Nashua 2 NNW	United States	Record low maximum temperature	14.4 C (57.9 F)	45 of 100 (Notable)
Skara 1	Sweden	Record daily precipitation	39.5 mm (1.6 in)	44 of 100 (Notable)
Oberlin Fire Twr	United States	Record daily precipitation	78.5 mm (3.1 in)	44 of 100 (Notable)
Angelica	United States	Record daily precipitation	45.7 mm (1.8 in)	44 of 100 (Notable)
Port Hastings	Canada	Record low maximum temperature	13.0 C (55.4 F)	43 of 100 (Notable)
Mariupol'	Ukraine	Record daily precipitation	45.0 mm (1.8 in)	43 of 100 (Notable)
Glendive	United States	Record high minimum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Spencer 2 N	United States	Record daily precipitation	51.3 mm (2.0 in)	43 of 100 (Notable)
Cavendish	United States	Record daily precipitation	48.8 mm (1.9 in)	43 of 100 (Notable)
Northville	United States	Record daily precipitation	40.6 mm (1.6 in)	42 of 100 (Notable)
Tallinn	Estonia	Record daily precipitation	30.3 mm (1.2 in)	41 of 100 (Notable)
Riverhead Rsch Farm	United States	Record daily precipitation	112.5 mm (4.4 in)	41 of 100 (Notable)
Lewiston	United States	Record low maximum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Atlantic City Marina	United States	Record low minimum temperature	13.3 C (55.9 F)	40 of 100 (Notable)
Griffiss AFB	United States	Record low maximum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Vajda-Guba	Russia	Record low minimum temperature	1.8 C (35.2 F)	39 of 100 (Notable)
Standish 4NE	United States	Record daily precipitation	31.8 mm (1.3 in)	39 of 100 (Notable)
Franklinville	United States	Record daily precipitation	48.5 mm (1.9 in)	39 of 100 (Notable)
Mays Point Lock 25	United States	Record daily precipitation	47.5 mm (1.9 in)	39 of 100 (Notable)
Wolcott 3 NW	United States	Record daily precipitation	62.7 mm (2.5 in)	39 of 100 (Notable)
Lewisburg Exp STN	United States	Record daily precipitation	72.9 mm (2.9 in)	39 of 100 (Notable)
Waynesboro	United States	Record daily precipitation	74.2 mm (2.9 in)	39 of 100 (Notable)
Eastport	United States	Record low maximum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
La Grange	United States	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Hatteras	United States	Record high maximum temperature	31.7 C (89.1 F)	38 of 100 (Notable)
Pomona/Fairplex	United States	Record high minimum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Machias	United States	Record daily precipitation	40.4 mm (1.6 in)	37 of 100 (Notable)
Dexter	United States	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Hanover	United States	Record low maximum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Newport 1 NW	United States	Record daily precipitation	36.1 mm (1.4 in)	37 of 100 (Notable)
Gaddede	Sweden	Record low minimum temperature	0.5 C (32.9 F)	36 of 100 (Notable)
E Tawas	United States	Record daily precipitation	29.5 mm (1.2 in)	36 of 100 (Notable)
Ft Meade	United States	Record high minimum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Greeneville Exp STN	United States	Record high minimum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
Chelsea	United States	Record daily precipitation	41.7 mm (1.6 in)	36 of 100 (Notable)
Houston Wb City	United States	Record daily precipitation	39.6 mm (1.6 in)	36 of 100 (Notable)
Utica Oneida Co AP	United States	Record daily precipitation	40.1 mm (1.6 in)	36 of 100 (Notable)
Beechy	Canada	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Santiago Ixcuintla	Mexico	Record daily precipitation	129.8 mm (5.1 in)	35 of 100 (Notable)
Union Hidalgo	Mexico	Record high maximum temperature	40.0 C (104.0 F)	35 of 100 (Notable)
Elizabethtown	United States	Record daily precipitation	38.9 mm (1.5 in)	35 of 100 (Notable)
Little Falls Mill St	United States	Record daily precipitation	35.6 mm (1.4 in)	35 of 100 (Notable)
Yellow Grass	Canada	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)

Counts by Type and Timescale

923 records

Records set or tied on 12 August 1983 by type: Highest daily maximum 100, Lowest daily maximum 193, Highest daily minimum 254, Lowest daily minimum 73, Heaviest daily rainfall 303.

Records on 12 August 1983 by type
Record type	Records
Highest daily maximum	100
Lowest daily maximum	193
Highest daily minimum	254
Lowest daily minimum	73
Heaviest daily rainfall	303
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 August 1983 by timescale: all-time 4, monthly 31, daily 888.

How Much Records Were Beaten By

719 broken records

Margins by which the 719 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.2. Ties are not counted.

Top 20 by Significance

12 August 1983

Top 20 records on 12 August 1983 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 August 1983	Mt Morris 2W, US	monthly rain	94.0 mm (3.7 in)	19.1 mm (0.8 in)	89 years	65 of 100 (Major)
12 August 1983	Lowville, US	daily rain	72.1 mm (2.8 in)	45.4 mm (1.8 in)	34 years	59 of 100 (Notable)
12 August 1983	Krasnaja_Gora, RU	daily rain	83.2 mm (3.3 in)	67.8 mm (2.7 in)	44 years	58 of 100 (Notable)
12 August 1983	Belfast, US	daily rain	56.1 mm (2.2 in)	25.9 mm (1.0 in)	89 years	57 of 100 (Notable)
12 August 1983	Clyde Lock 26, US	daily rain	71.1 mm (2.8 in)	46.2 mm (1.8 in)	34 years	56 of 100 (Notable)
12 August 1983	Manly Vale (Manly Dam), AU	daily rain	56.6 mm (2.2 in)	28.9 mm (1.1 in)	74 years	53 of 100 (Notable)
12 August 1983	Grand Lake 6 SSW, US	monthly rain	30.2 mm (1.2 in)	12.2 mm (0.5 in)	29 years	53 of 100 (Notable)
12 August 1983	Newark, US	daily rain	59.9 mm (2.4 in)	39.1 mm (1.5 in)	34 years	52 of 100 (Notable)
12 August 1983	Svyatoy Nos;Cape(Closed), RU	daily rain	32.0 mm (1.3 in)	15.5 mm (0.6 in)	52 years	51 of 100 (Notable)
12 August 1983	Kurilsk, RU	daily rain	61.8 mm (2.4 in)	48.3 mm (1.9 in)	16 years	48 of 100 (Notable)
12 August 1983	Avon, US	daily rain	132.1 mm (5.2 in)	92.2 mm (3.6 in)	1 year	48 of 100 (Notable)
12 August 1983	Bennetts Brg, US	daily rain	62.2 mm (2.4 in)	45.2 mm (1.8 in)	18 years	47 of 100 (Notable)
12 August 1983	Hooker 12 NNW, US	daily rain	62.2 mm (2.4 in)	35.3 mm (1.4 in)	18 years	47 of 100 (Notable)
12 August 1983	Rochester, US	daily rain	60.5 mm (2.4 in)	41.2 mm (1.6 in)	16 years	47 of 100 (Notable)
12 August 1983	Woodstock, US	daily rain	62.7 mm (2.5 in)	37.3 mm (1.5 in)	16 years	47 of 100 (Notable)
12 August 1983	Vallecillo (Smn), MX	daily rain	40.4 mm (1.6 in)	40.4 mm (1.6 in)	40 years	46 of 100 (Notable)
12 August 1983	Midland, AU	daily rain	40.2 mm (1.6 in)	17.3 mm (0.7 in)	53 years	45 of 100 (Notable)
12 August 1983	Nashua 2 NNW, US	daily low max	14.4 C (57.9 F)	3.4 C (6.1 F)	94 years	45 of 100 (Notable)
12 August 1983	Skara 1, SE	daily rain	39.5 mm (1.6 in)	12.5 mm (0.5 in)	52 years	44 of 100 (Notable)
12 August 1983	Oberlin Fire Twr, US	daily rain	78.5 mm (3.1 in)	62.2 mm (2.4 in)	5 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

1793 to 1983

Records set or tied on this calendar date in each year from 1793 to 1983. 1983 had 923 records.

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

Records on 08-12 in each year
Year	Records
1793	1
1796	1
1811	2
1814	1
1815	1
1825	1
1843	1
1851	1
1854	1
1855	2
1856	1
1861	1
1864	3
1865	1
1867	1
1868	1
1871	2
1872	1
1873	1
1874	2
1875	3
1876	2
1879	1
1881	2
1883	1
1884	1
1885	1
1887	2
1888	2
1889	4
1890	4
1891	4
1892	2
1893	1
1894	1
1895	6
1896	2
1897	4
1898	1
1899	10
1900	1
1901	5
1902	9
1903	14
1904	13
1905	16
1906	8
1907	8
1908	31
1909	42
1910	16
1911	33
1912	40
1913	39
1914	26
1915	46
1916	31
1917	134
1918	37
1919	42
1920	26
1921	174
1922	71
1923	89
1924	267
1925	150
1926	154
1927	145
1928	173
1929	276
1930	501
1931	708
1932	418
1933	271
1934	471
1935	408
1936	591
1937	356
1938	237
1939	282
1940	545
1941	481
1942	257
1943	523
1944	595
1945	295
1946	655
1947	729
1948	384
1949	469
1950	442
1951	357
1952	533
1953	227
1954	969
1955	590
1956	265
1957	384
1958	406
1959	388
1960	707
1961	381
1962	466
1963	559
1964	1,346
1965	977
1966	777
1967	1,135
1968	444
1969	629
1970	422
1971	486
1972	473
1973	442
1974	560
1975	593
1976	495
1977	747
1978	571
1979	1,192
1980	692
1981	665
1982	789
1983	923
1984	665
1985	935
1986	615
1987	935
1988	1,518
1989	827
1990	727
1991	726
1992	1,134
1993	936
1994	861
1995	1,654
1996	1,336
1997	1,363
1998	1,215
1999	1,325
2000	741
2001	855
2002	1,345
2003	1,752
2004	1,872
2005	1,085
2006	874
2007	1,209
2008	970
2009	814
2010	1,907
2011	903
2012	910
2013	427
2014	787
2015	757
2016	1,290
2017	533
2018	571
2019	695
2020	730
2021	980
2022	616
2023	779
2024	659
2025	639
2026	849

Download the Data

Data for records on 1983-08-12: 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	677
20 to 40	31
40 to 60	7
60 to 80	3
80 to 100	1