Weather Records on 21 September 1980

990 weather records were set or tied worldwide on 21 September 1980. Highest significance: Baku, AZ.

Key Facts for 21 September 1980

On 21 September 1980, 990 weather records were set or tied at long-record stations worldwide.
582 were record highs and 47 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 32 monthly and 953 daily.
Baku set a daily record precipitation of 46.0 mm (1.8 in) on 21 September 1980.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 447 records.

Record Map

990 stations

990 station records on 21 September 1980 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1980: highest significance records shown on the map
Station	Country	Type	Value	Significance
Baku	Azerbaijan	Record daily precipitation	46.0 mm (1.8 in)	65 of 100 (Major)
Trempealeau Dam 6	United States	Record daily precipitation	152.7 mm (6.0 in)	63 of 100 (Major)
Hatfield	United States	Record daily precipitation	70.1 mm (2.8 in)	55 of 100 (Notable)
Khankandy	Azerbaijan	Record daily precipitation	58.3 mm (2.3 in)	50 of 100 (Notable)
Shusha	Azerbaijan	Record daily precipitation	62.4 mm (2.5 in)	50 of 100 (Notable)
Altair	Brazil	Record daily precipitation	166.5 mm (6.6 in)	50 of 100 (Notable)
Marshfield Exp Farm	United States	Record daily precipitation	74.9 mm (2.9 in)	50 of 100 (Notable)
Hilo Intl AP 87	United States	Record daily precipitation	117.1 mm (4.6 in)	50 of 100 (Notable)
Red Wing	United States	Record daily precipitation	66.8 mm (2.6 in)	48 of 100 (Notable)
Wells	United States	Record daily precipitation	70.4 mm (2.8 in)	48 of 100 (Notable)
Lac Vieux Desert	United States	Record daily precipitation	71.1 mm (2.8 in)	48 of 100 (Notable)
Alat	Azerbaijan	Record daily precipitation	31.9 mm (1.3 in)	45 of 100 (Notable)
Curtiss	United States	Record daily precipitation	103.6 mm (4.1 in)	45 of 100 (Notable)
Ookala 223	United States	Record daily precipitation	84.3 mm (3.3 in)	45 of 100 (Notable)
Waseca S Rsch & Outreach Ctr	United States	Record daily precipitation	76.2 mm (3.0 in)	44 of 100 (Notable)
Vila Carmem	Brazil	Record daily precipitation	45.8 mm (1.8 in)	43 of 100 (Notable)
Clermont-Ferrand	France	Record daily precipitation	26.9 mm (1.1 in)	43 of 100 (Notable)
Pittsville	United States	Record daily precipitation	71.1 mm (2.8 in)	43 of 100 (Notable)
Paauilo 221	United States	Record daily precipitation	51.3 mm (2.0 in)	43 of 100 (Notable)
Eau Pleine Rsvr	United States	Record daily precipitation	68.1 mm (2.7 in)	42 of 100 (Notable)
Neillsville 3ESE	United States	Record daily precipitation	55.9 mm (2.2 in)	42 of 100 (Notable)
Naxcivan	Azerbaijan	Record daily precipitation	25.7 mm (1.0 in)	41 of 100 (Notable)
Winona Dam 5 A	United States	Record daily precipitation	63.0 mm (2.5 in)	41 of 100 (Notable)
Santa Isabel	Brazil	Record daily precipitation	32.4 mm (1.3 in)	40 of 100 (Notable)
Elliotdale (Tnk)	South Africa	Record daily precipitation	65.0 mm (2.6 in)	40 of 100 (Notable)
Agdam	Azerbaijan	Record daily precipitation	35.4 mm (1.4 in)	39 of 100 (Notable)
Jaborandi	Brazil	Record daily precipitation	39.6 mm (1.6 in)	39 of 100 (Notable)
Campo Alegre	Brazil	Record daily precipitation	47.1 mm (1.9 in)	39 of 100 (Notable)
Pbo Anantapur	India	Record daily precipitation	329.9 mm (13.0 in)	39 of 100 (Notable)
Coloso	Puerto Rico [United States]	Record high minimum temperature	25.6 C (78.1 F)	39 of 100 (Notable)
Dodge	United States	Record daily precipitation	74.7 mm (2.9 in)	39 of 100 (Notable)
Fairchild Rs	United States	Record daily precipitation	66.5 mm (2.6 in)	39 of 100 (Notable)
Medford	United States	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)
Winona	United States	Record daily precipitation	58.9 mm (2.3 in)	38 of 100 (Notable)
Marquette	United States	Record daily precipitation	49.3 mm (1.9 in)	38 of 100 (Notable)
Grauna	Brazil	Record daily precipitation	47.7 mm (1.9 in)	37 of 100 (Notable)
Nordby (Fano)	Denmark	Record high maximum temperature	24.0 C (75.2 F)	37 of 100 (Notable)
Aachen	Germany	Record high minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Owen 1E	United States	Record daily precipitation	114.6 mm (4.5 in)	37 of 100 (Notable)
Kukaiau 222	United States	Record daily precipitation	37.8 mm (1.5 in)	37 of 100 (Notable)
Kukuihaele Hic 199	United States	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Tapiratiba	Brazil	Record daily precipitation	43.1 mm (1.7 in)	36 of 100 (Notable)
Morgan 1 W	United States	Record high maximum temperature	36.7 C (98.1 F)	36 of 100 (Notable)
Monterey	United States	Record high minimum temperature	17.2 C (63.0 F)	36 of 100 (Notable)
Beylagan Aerodrome	Azerbaijan	Record daily precipitation	32.0 mm (1.3 in)	35 of 100 (Notable)
Fazenda Belmonte	Brazil	Record daily precipitation	46.4 mm (1.8 in)	35 of 100 (Notable)
Altastenberg	Germany	Record high maximum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Buynaksk	Russia	Record daily precipitation	80.5 mm (3.2 in)	35 of 100 (Notable)
Beloit	United States	Record high maximum temperature	36.7 C (98.1 F)	35 of 100 (Notable)
Faribault	United States	Record daily precipitation	62.2 mm (2.4 in)	35 of 100 (Notable)
Moro	United States	Record low minimum temperature	-5.0 C (23.0 F)	35 of 100 (Notable)
Spirit Falls	United States	Record daily precipitation	71.1 mm (2.8 in)	35 of 100 (Notable)
Carazinho	Brazil	Record daily precipitation	81.2 mm (3.2 in)	34 of 100 (Routine)
Ibate	Brazil	Record daily precipitation	38.8 mm (1.5 in)	34 of 100 (Routine)
Abilene	United States	Record high maximum temperature	37.2 C (99.0 F)	34 of 100 (Routine)
Lake Providence	United States	Record high minimum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Healdton 3 E	United States	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Fredericksburg Np	United States	Record high maximum temperature	34.4 C (93.9 F)	34 of 100 (Routine)
Uccle	Belgium	Record high minimum temperature	16.2 C (61.2 F)	33 of 100 (Routine)
Andradina	Brazil	Record daily precipitation	52.4 mm (2.1 in)	33 of 100 (Routine)

Counts by Type and Timescale

990 records

Records set or tied on 21 September 1980 by type: Highest daily maximum 250, Lowest daily maximum 27, Highest daily minimum 332, Lowest daily minimum 20, Heaviest daily rainfall 354, Heaviest daily snowfall 6, Deepest snow cover 1.

Records on 21 September 1980 by type
Record type	Records
Highest daily maximum	250
Lowest daily maximum	27
Highest daily minimum	332
Lowest daily minimum	20
Heaviest daily rainfall	354
Heaviest daily snowfall	6
Deepest snow cover	1

Records on 21 September 1980 by timescale: all-time 5, monthly 32, daily 953.

How Much Records Were Beaten By

770 broken records

Margins by which the 770 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 700.0. Ties are not counted.

Top 20 by Significance

21 September 1980

Top 20 records on 21 September 1980 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1980	Baku, AZ	daily rain	46.0 mm (1.8 in)	31.0 mm (1.2 in)	52 years	65 of 100 (Major)
21 September 1980	Trempealeau Dam 6, US	all-time rain	152.7 mm (6.0 in)	44.5 mm (1.8 in)	12 years	63 of 100 (Major)
21 September 1980	Hatfield, US	daily rain	70.1 mm (2.8 in)	39.1 mm (1.5 in)	56 years	55 of 100 (Notable)
21 September 1980	Khankandy, AZ	daily rain	58.3 mm (2.3 in)	35.3 mm (1.4 in)	23 years	50 of 100 (Notable)
21 September 1980	Shusha, AZ	daily rain	62.4 mm (2.5 in)	37.0 mm (1.5 in)	23 years	50 of 100 (Notable)
21 September 1980	Altair, BR	all-time rain	166.5 mm (6.6 in)	30.2 mm (1.2 in)	1 year	50 of 100 (Notable)
21 September 1980	Marshfield Exp Farm, US	daily rain	74.9 mm (2.9 in)	50.0 mm (2.0 in)	15 years	50 of 100 (Notable)
21 September 1980	Hilo Intl AP 87, US	daily rain	117.1 mm (4.6 in)	56.9 mm (2.2 in)	26 years	50 of 100 (Notable)
21 September 1980	Red Wing, US	daily rain	66.8 mm (2.6 in)	43.4 mm (1.7 in)	21 years	48 of 100 (Notable)
21 September 1980	Wells, US	daily rain	70.4 mm (2.8 in)	43.5 mm (1.7 in)	30 years	48 of 100 (Notable)
21 September 1980	Lac Vieux Desert, US	monthly rain	71.1 mm (2.8 in)	9.6 mm (0.38 in)	71 years	48 of 100 (Notable)
21 September 1980	Alat, AZ	monthly rain	31.9 mm (1.3 in)	9.6 mm (0.38 in)	38 years	45 of 100 (Notable)
21 September 1980	Curtiss, US	daily rain	103.6 mm (4.1 in)	72.9 mm (2.9 in)	8 years	45 of 100 (Notable)
21 September 1980	Ookala 223, US	daily rain	84.3 mm (3.3 in)	61.4 mm (2.4 in)	7 years	45 of 100 (Notable)
21 September 1980	Waseca S Rsch & Outreach Ctr, US	daily rain	76.2 mm (3.0 in)	40.9 mm (1.6 in)	21 years	44 of 100 (Notable)
21 September 1980	Vila Carmem, BR	daily rain	45.8 mm (1.8 in)	32.7 mm (1.3 in)	44 years	43 of 100 (Notable)
21 September 1980	Clermont-Ferrand, FR	daily rain	26.9 mm (1.1 in)	19.4 mm (0.8 in)	37 years	43 of 100 (Notable)
21 September 1980	Pittsville, US	daily rain	71.1 mm (2.8 in)	44.7 mm (1.8 in)	15 years	43 of 100 (Notable)
21 September 1980	Paauilo 221, US	daily rain	51.3 mm (2.0 in)	31.0 mm (1.2 in)	50 years	43 of 100 (Notable)
21 September 1980	Eau Pleine Rsvr, US	daily rain	68.1 mm (2.7 in)	47.8 mm (1.9 in)	15 years	42 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

1805 to 1980

Records set or tied on this calendar date in each year from 1805 to 1980. 1980 had 990 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	588
2026	469

Download the Data

Data for records on 1980-09-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 100	769
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	0
600 to 700	1