Weather Records on 20 September 1983

1,958 weather records were set or tied worldwide on 20 September 1983. Highest significance: Lankaran, AZ.

Key Facts for 20 September 1983

On 20 September 1983, 1,958 weather records were set or tied at long-record stations worldwide.
606 were record highs and 762 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 67 monthly and 1,886 daily.
Lankaran set an all-time record daily precipitation of 136.9 mm (5.4 in) on 20 September 1983.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 432 records.

Record Map

1,958 stations

1,958 station records on 20 September 1983 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1983: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lankaran	Azerbaijan	Record daily precipitation	136.9 mm (5.4 in)	70 of 100 (Major)
Mason City	United States	Record daily precipitation	127.5 mm (5.0 in)	67 of 100 (Major)
Lac Vieux Desert	United States	Record daily precipitation	59.7 mm (2.4 in)	67 of 100 (Major)
Mossman South Alchera Drive	Australia	Record daily precipitation	62.0 mm (2.4 in)	64 of 100 (Major)
Eupora 2 E	United States	Record daily precipitation	89.2 mm (3.5 in)	60 of 100 (Major)
Sparta	United States	Record daily precipitation	92.2 mm (3.6 in)	60 of 100 (Major)
Rapelje	United States	Record snow depth	30.5 cm (12.0 in)	59 of 100 (Notable)
Suldalsvatn	Norway	Record daily precipitation	58.5 mm (2.3 in)	56 of 100 (Notable)
Prentice #2	United States	Record daily precipitation	80.3 mm (3.2 in)	56 of 100 (Notable)
Cairns Aero	Australia	Record daily precipitation	32.0 mm (1.3 in)	55 of 100 (Notable)
Alma Dam 4	United States	Record daily precipitation	80.5 mm (3.2 in)	55 of 100 (Notable)
Elgin 2SSW	United States	Record daily precipitation	93.2 mm (3.7 in)	54 of 100 (Notable)
Harmony	United States	Record daily precipitation	126.2 mm (5.0 in)	54 of 100 (Notable)
Fife Lake 4 SW	United States	Record daily precipitation	81.3 mm (3.2 in)	53 of 100 (Notable)
Cooktown Post Office	Australia	Record daily precipitation	29.0 mm (1.1 in)	52 of 100 (Notable)
Dillon U of Montana Western	United States	Record low minimum temperature	-11.1 C (12.0 F)	52 of 100 (Notable)
Isit	Russia	Record daily precipitation	27.2 mm (1.1 in)	51 of 100 (Notable)
Charles City	United States	Record daily precipitation	76.7 mm (3.0 in)	51 of 100 (Notable)
Osage	United States	Record daily precipitation	131.3 mm (5.2 in)	51 of 100 (Notable)
Neillsville 3ESE	United States	Record daily precipitation	85.9 mm (3.4 in)	51 of 100 (Notable)
Stevens Pt	United States	Record daily precipitation	74.7 mm (2.9 in)	51 of 100 (Notable)
Jesus Maria	Mexico	Record daily precipitation	68.8 mm (2.7 in)	50 of 100 (Notable)
Willow Rsvr	United States	Record daily precipitation	71.1 mm (2.8 in)	50 of 100 (Notable)
Crystal Falls 6 NE	United States	Record daily precipitation	62.5 mm (2.5 in)	49 of 100 (Notable)
Mather 3 NW	United States	Record daily precipitation	69.3 mm (2.7 in)	49 of 100 (Notable)
Beechwood 7 WNW	United States	Record daily precipitation	56.1 mm (2.2 in)	48 of 100 (Notable)
Lanesboro	United States	Record daily precipitation	110.2 mm (4.3 in)	48 of 100 (Notable)
Buckatabon	United States	Record daily precipitation	59.7 mm (2.4 in)	48 of 100 (Notable)
Cata (Bos)	South Africa	Record daily precipitation	51.0 mm (2.0 in)	47 of 100 (Notable)
Rice Reservoir-Tomahawk	United States	Record daily precipitation	58.4 mm (2.3 in)	47 of 100 (Notable)
Caconde	Brazil	Record daily precipitation	39.4 mm (1.6 in)	46 of 100 (Notable)
Preston	United States	Record daily precipitation	120.9 mm (4.8 in)	46 of 100 (Notable)
Newton Exp STN	United States	Record daily precipitation	79.0 mm (3.1 in)	46 of 100 (Notable)
Waupaca	United States	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Marquette	United States	Record daily precipitation	46.5 mm (1.8 in)	46 of 100 (Notable)
Hope Vale	Australia	Record daily precipitation	29.0 mm (1.1 in)	45 of 100 (Notable)
Borrego Desert Park	United States	Record daily precipitation	31.8 mm (1.3 in)	45 of 100 (Notable)
Cresco 1 NE	United States	Record daily precipitation	78.7 mm (3.1 in)	45 of 100 (Notable)
Faribault	United States	Record daily precipitation	37.3 mm (1.5 in)	45 of 100 (Notable)
Red Wing	United States	Record daily precipitation	73.4 mm (2.9 in)	45 of 100 (Notable)
Mount Olive	Australia	Record daily precipitation	28.7 mm (1.1 in)	44 of 100 (Notable)
Durham	Canada	Record daily precipitation	85.5 mm (3.4 in)	44 of 100 (Notable)
Montreal McGill	Canada	Record high maximum temperature	31.0 C (87.8 F)	44 of 100 (Notable)
Algona	United States	Record daily precipitation	82.3 mm (3.2 in)	44 of 100 (Notable)
Kanawha	United States	Record daily precipitation	120.7 mm (4.8 in)	44 of 100 (Notable)
Covington 8 WNW	United States	Record daily precipitation	76.2 mm (3.0 in)	44 of 100 (Notable)
New Hampton	United States	Record daily precipitation	98.3 mm (3.9 in)	43 of 100 (Notable)
Bozeman 12 NE	United States	Record snow depth	17.8 cm (7.0 in)	43 of 100 (Notable)
Fairchild Rs	United States	Record daily precipitation	88.1 mm (3.5 in)	43 of 100 (Notable)
Ibitu	Brazil	Record daily precipitation	36.5 mm (1.4 in)	42 of 100 (Notable)
Eagle Mtn	United States	Record daily precipitation	39.1 mm (1.5 in)	42 of 100 (Notable)
Martinsdale 3 NNW	United States	Record low maximum temperature	4.4 C (39.9 F)	42 of 100 (Notable)
Galesville 2WSW	United States	Record daily precipitation	64.0 mm (2.5 in)	42 of 100 (Notable)
Mt Clemens Ang Base	United States	Record daily precipitation	33.3 mm (1.3 in)	42 of 100 (Notable)
Moorcroft 3S	United States	Record low maximum temperature	-0.6 C (30.9 F)	42 of 100 (Notable)
Villa Purificacion (Smn)	Mexico	Record daily precipitation	111.0 mm (4.4 in)	41 of 100 (Notable)
Huaniqueo	Mexico	Record daily precipitation	45.5 mm (1.8 in)	41 of 100 (Notable)
Storrs	United States	Record high maximum temperature	32.2 C (90.0 F)	41 of 100 (Notable)
West Yellowstone	United States	Record low minimum temperature	-19.4 C (-2.9 F)	41 of 100 (Notable)
Ellsworth 1E	United States	Record daily precipitation	46.2 mm (1.8 in)	41 of 100 (Notable)

Counts by Type and Timescale

1,958 records

Records set or tied on 20 September 1983 by type: Highest daily maximum 331, Lowest daily maximum 308, Highest daily minimum 275, Lowest daily minimum 454, Heaviest daily rainfall 557, Heaviest daily snowfall 8, Deepest snow cover 25.

Records on 20 September 1983 by type
Record type	Records
Highest daily maximum	331
Lowest daily maximum	308
Highest daily minimum	275
Lowest daily minimum	454
Heaviest daily rainfall	557
Heaviest daily snowfall	8
Deepest snow cover	25

Records on 20 September 1983 by timescale: all-time 5, monthly 67, daily 1,886.

How Much Records Were Beaten By

1,653 broken records

Margins by which the 1,653 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 305.0. Ties are not counted.

Top 20 by Significance

20 September 1983

Top 20 records on 20 September 1983 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1983	Lankaran, AZ	all-time rain	136.9 mm (5.4 in)	37.3 mm (1.5 in)	74 years	70 of 100 (Major)
20 September 1983	Mason City, US	daily rain	127.5 mm (5.0 in)	91.4 mm (3.6 in)	60 years	67 of 100 (Major)
20 September 1983	Lac Vieux Desert, US	daily rain	59.7 mm (2.4 in)	36.8 mm (1.4 in)	69 years	67 of 100 (Major)
20 September 1983	Mossman South Alchera Drive, AU	daily rain	62.0 mm (2.4 in)	45.7 mm (1.8 in)	56 years	64 of 100 (Major)
20 September 1983	Eupora 2 E, US	daily rain	89.2 mm (3.5 in)	64.3 mm (2.5 in)	50 years	60 of 100 (Major)
20 September 1983	Sparta, US	daily rain	92.2 mm (3.6 in)	66.0 mm (2.6 in)	36 years	60 of 100 (Major)
20 September 1983	Rapelje, US	daily snow depth	30.5 cm (12.0 in)	30.5 cm (12.0 in)	74 years	59 of 100 (Notable)
20 September 1983	Suldalsvatn, NO	daily rain	58.5 mm (2.3 in)	34.4 mm (1.4 in)	65 years	56 of 100 (Notable)
20 September 1983	Prentice #2, US	daily rain	80.3 mm (3.2 in)	34.6 mm (1.4 in)	69 years	56 of 100 (Notable)
20 September 1983	Cairns Aero, AU	daily rain	32.0 mm (1.3 in)	27.2 mm (1.1 in)	38 years	55 of 100 (Notable)
20 September 1983	Alma Dam 4, US	daily rain	80.5 mm (3.2 in)	48.7 mm (1.9 in)	37 years	55 of 100 (Notable)
20 September 1983	Elgin 2SSW, US	daily rain	93.2 mm (3.7 in)	70.8 mm (2.8 in)	34 years	54 of 100 (Notable)
20 September 1983	Harmony, US	monthly rain	126.2 mm (5.0 in)	51.3 mm (2.0 in)	2 years	54 of 100 (Notable)
20 September 1983	Fife Lake 4 SW, US	daily rain	81.3 mm (3.2 in)	36.1 mm (1.4 in)	38 years	53 of 100 (Notable)
20 September 1983	Cooktown Post Office, AU	daily rain	29.0 mm (1.1 in)	21.0 mm (0.8 in)	8 years	52 of 100 (Notable)
20 September 1983	Dillon U of Montana Western, US	daily low min	-11.1 C (12.0 F)	7.8 C (14.0 F)	78 years	52 of 100 (Notable)
20 September 1983	Isit, RU	daily rain	27.2 mm (1.1 in)	16.5 mm (0.6 in)	25 years	51 of 100 (Notable)
20 September 1983	Charles City, US	daily rain	76.7 mm (3.0 in)	46.2 mm (1.8 in)	34 years	51 of 100 (Notable)
20 September 1983	Osage, US	monthly rain	131.3 mm (5.2 in)	28.9 mm (1.1 in)	37 years	51 of 100 (Notable)
20 September 1983	Neillsville 3ESE, US	daily rain	85.9 mm (3.4 in)	44.0 mm (1.7 in)	38 years	51 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

1812 to 1983

Records set or tied on this calendar date in each year from 1812 to 1983. 1983 had 1,958 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 1983-09-20: 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 50	1,621
50 to 100	26
100 to 150	3
150 to 200	1
200 to 250	0
250 to 300	1
300 to 350	1