Weather Records on 21 September 1979

736 weather records were set or tied worldwide on 21 September 1979. Highest significance: Busselton Shire, AU.

Key Facts for 21 September 1979

On 21 September 1979, 736 weather records were set or tied at long-record stations worldwide.
157 were record highs and 110 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 23 monthly and 711 daily.
Busselton Shire set a monthly record daily precipitation of 64.0 mm (2.5 in) on 21 September 1979.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 449 records.

Record Map

736 stations

736 station records on 21 September 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Busselton Shire	Australia	Record daily precipitation	64.0 mm (2.5 in)	75 of 100 (Major)
Alexandria	United States	Record daily precipitation	127.0 mm (5.0 in)	68 of 100 (Major)
Berea College	United States	Record daily precipitation	106.2 mm (4.2 in)	65 of 100 (Major)
Kosciusko	United States	Record daily precipitation	90.7 mm (3.6 in)	65 of 100 (Major)
Newport	United States	Record daily precipitation	102.4 mm (4.0 in)	64 of 100 (Major)
Milan Exp STN	United States	Record daily precipitation	75.2 mm (3.0 in)	62 of 100 (Major)
Alicia 2 NNE	United States	Record daily precipitation	115.6 mm (4.6 in)	61 of 100 (Major)
Pocahontas 1	United States	Record daily precipitation	106.7 mm (4.2 in)	60 of 100 (Major)
Jonesboro 3 SSE	United States	Record daily precipitation	102.9 mm (4.1 in)	59 of 100 (Notable)
Laurel	United States	Record daily precipitation	177.8 mm (7.0 in)	59 of 100 (Notable)
The Oaks	Australia	Record daily precipitation	33.4 mm (1.3 in)	58 of 100 (Notable)
Fayette	United States	Record daily precipitation	88.6 mm (3.5 in)	58 of 100 (Notable)
Lexington Bluegrass AP	United States	Record daily precipitation	104.9 mm (4.1 in)	58 of 100 (Notable)
Canton 4N	United States	Record daily precipitation	96.5 mm (3.8 in)	56 of 100 (Notable)
Corning	United States	Record daily precipitation	95.5 mm (3.8 in)	55 of 100 (Notable)
Mt Sterling	United States	Record daily precipitation	72.4 mm (2.9 in)	55 of 100 (Notable)
Forest	United States	Record daily precipitation	78.5 mm (3.1 in)	55 of 100 (Notable)
Clarksville Wwtp	United States	Record daily precipitation	114.3 mm (4.5 in)	55 of 100 (Notable)
Reform	United States	Record daily precipitation	104.1 mm (4.1 in)	54 of 100 (Notable)
Tallulah	United States	Record daily precipitation	88.9 mm (3.5 in)	54 of 100 (Notable)
Bluff Lake	United States	Record daily precipitation	71.6 mm (2.8 in)	54 of 100 (Notable)
Ofahoma	United States	Record daily precipitation	89.7 mm (3.5 in)	54 of 100 (Notable)
White Oak 2 N	United States	Record daily precipitation	106.9 mm (4.2 in)	54 of 100 (Notable)
Highlands	United States	Record daily precipitation	137.7 mm (5.4 in)	54 of 100 (Notable)
Gilmer 4 WNW	United States	Record daily precipitation	101.6 mm (4.0 in)	54 of 100 (Notable)
Eupora 2 E	United States	Record daily precipitation	68.1 mm (2.7 in)	53 of 100 (Notable)
Tylertown 5ESE	United States	Record daily precipitation	91.9 mm (3.6 in)	53 of 100 (Notable)
Blytheville	United States	Record daily precipitation	109.5 mm (4.3 in)	52 of 100 (Notable)
D'Lo 2 SW	United States	Record daily precipitation	98.6 mm (3.9 in)	52 of 100 (Notable)
Innsbruck	Austria	Record daily precipitation	51.3 mm (2.0 in)	51 of 100 (Notable)
Dunmor	United States	Record daily precipitation	132.1 mm (5.2 in)	51 of 100 (Notable)
Caruthersville	United States	Record daily precipitation	99.3 mm (3.9 in)	51 of 100 (Notable)
Cuba	United States	Record daily precipitation	63.2 mm (2.5 in)	50 of 100 (Notable)
Conowingo Dam	United States	Record daily precipitation	91.4 mm (3.6 in)	50 of 100 (Notable)
Lexington	United States	Record daily precipitation	93.2 mm (3.7 in)	50 of 100 (Notable)
Asheville	United States	Record daily precipitation	41.1 mm (1.6 in)	50 of 100 (Notable)
Schwangau-Horn	Germany	Record daily precipitation	61.8 mm (2.4 in)	49 of 100 (Notable)
La Motte (Bos)	South Africa	Record daily precipitation	49.0 mm (1.9 in)	49 of 100 (Notable)
Salem	United States	Record daily precipitation	43.4 mm (1.7 in)	49 of 100 (Notable)
Oakley Exp STN	United States	Record daily precipitation	73.2 mm (2.9 in)	49 of 100 (Notable)
Lynchburg Rgnl AP	United States	Record daily precipitation	91.4 mm (3.6 in)	49 of 100 (Notable)
Loongana	Australia	Record daily precipitation	25.0 mm (1.0 in)	48 of 100 (Notable)
Gainesville Lock	United States	Record daily precipitation	78.7 mm (3.1 in)	48 of 100 (Notable)
Winnsboro 5 SSE	United States	Record daily precipitation	91.9 mm (3.6 in)	48 of 100 (Notable)
Union	United States	Record daily precipitation	69.3 mm (2.7 in)	48 of 100 (Notable)
Carius	Brazil	Record daily precipitation	31.4 mm (1.2 in)	47 of 100 (Notable)
Abidjan	Cote D'Ivoire	Record daily precipitation	104.9 mm (4.1 in)	47 of 100 (Notable)
Bay Springs	United States	Record daily precipitation	55.6 mm (2.2 in)	47 of 100 (Notable)
Carlisle	United States	Record daily precipitation	49.3 mm (1.9 in)	47 of 100 (Notable)
Bonito de Santa Fe	Brazil	Record daily precipitation	73.3 mm (2.9 in)	46 of 100 (Notable)
Danville	United States	Record daily precipitation	79.5 mm (3.1 in)	46 of 100 (Notable)
Pelahatchie	United States	Record daily precipitation	92.5 mm (3.6 in)	46 of 100 (Notable)
Keene 1 WSW	United States	Record daily precipitation	83.3 mm (3.3 in)	45 of 100 (Notable)
Ravenswood Lock Park	United States	Record daily precipitation	57.2 mm (2.3 in)	45 of 100 (Notable)
Tampa Intl AP	United States	Record daily precipitation	93.5 mm (3.7 in)	45 of 100 (Notable)
Agterkop	South Africa	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Leola	United States	Record daily precipitation	86.9 mm (3.4 in)	44 of 100 (Notable)
Belzoni	United States	Record daily precipitation	118.1 mm (4.6 in)	44 of 100 (Notable)
Monticello	United States	Record daily precipitation	106.7 mm (4.2 in)	44 of 100 (Notable)
Teresina	Brazil	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)

Counts by Type and Timescale

736 records

Records set or tied on 21 September 1979 by type: Highest daily maximum 46, Lowest daily maximum 67, Highest daily minimum 111, Lowest daily minimum 43, Heaviest daily rainfall 467, Deepest snow cover 2.

Records on 21 September 1979 by type
Record type	Records
Highest daily maximum	46
Lowest daily maximum	67
Highest daily minimum	111
Lowest daily minimum	43
Heaviest daily rainfall	467
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 21 September 1979 by timescale: all-time 2, monthly 23, daily 711.

How Much Records Were Beaten By

637 broken records

Margins by which the 637 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 88.9. Ties are not counted.

Top 20 by Significance

21 September 1979

Top 20 records on 21 September 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1979	Busselton Shire, AU	monthly rain	64.0 mm (2.5 in)	25.9 mm (1.0 in)	52 years	75 of 100 (Major)
21 September 1979	Alexandria, US	daily rain	127.0 mm (5.0 in)	71.1 mm (2.8 in)	69 years	68 of 100 (Major)
21 September 1979	Berea College, US	monthly rain	106.2 mm (4.2 in)	44.2 mm (1.7 in)	44 years	65 of 100 (Major)
21 September 1979	Kosciusko, US	daily rain	90.7 mm (3.6 in)	56.7 mm (2.2 in)	69 years	65 of 100 (Major)
21 September 1979	Newport, US	daily rain	102.4 mm (4.0 in)	58.7 mm (2.3 in)	69 years	64 of 100 (Major)
21 September 1979	Milan Exp STN, US	daily rain	75.2 mm (3.0 in)	49.8 mm (2.0 in)	72 years	62 of 100 (Major)
21 September 1979	Alicia 2 NNE, US	daily rain	115.6 mm (4.6 in)	64.8 mm (2.6 in)	69 years	61 of 100 (Major)
21 September 1979	Pocahontas 1, US	daily rain	106.7 mm (4.2 in)	43.5 mm (1.7 in)	80 years	60 of 100 (Major)
21 September 1979	Jonesboro 3 SSE, US	daily rain	102.9 mm (4.1 in)	52.1 mm (2.1 in)	80 years	59 of 100 (Notable)
21 September 1979	Laurel, US	monthly rain	177.8 mm (7.0 in)	36.8 mm (1.4 in)	72 years	59 of 100 (Notable)
21 September 1979	The Oaks, AU	daily rain	33.4 mm (1.3 in)	26.8 mm (1.1 in)	36 years	58 of 100 (Notable)
21 September 1979	Fayette, US	daily rain	88.6 mm (3.5 in)	73.1 mm (2.9 in)	36 years	58 of 100 (Notable)
21 September 1979	Lexington Bluegrass AP, US	daily rain	104.9 mm (4.1 in)	70.9 mm (2.8 in)	28 years	58 of 100 (Notable)
21 September 1979	Canton 4N, US	daily rain	96.5 mm (3.8 in)	40.6 mm (1.6 in)	69 years	56 of 100 (Notable)
21 September 1979	Corning, US	daily rain	95.5 mm (3.8 in)	46.7 mm (1.8 in)	69 years	55 of 100 (Notable)
21 September 1979	Mt Sterling, US	daily rain	72.4 mm (2.9 in)	41.9 mm (1.6 in)	54 years	55 of 100 (Notable)
21 September 1979	Forest, US	daily rain	78.5 mm (3.1 in)	63.3 mm (2.5 in)	36 years	55 of 100 (Notable)
21 September 1979	Clarksville Wwtp, US	daily rain	114.3 mm (4.5 in)	61.7 mm (2.4 in)	20 years	55 of 100 (Notable)
21 September 1979	Reform, US	daily rain	104.1 mm (4.1 in)	85.3 mm (3.4 in)	33 years	54 of 100 (Notable)
21 September 1979	Tallulah, US	daily rain	88.9 mm (3.5 in)	62.2 mm (2.4 in)	24 years	54 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 1979

Records set or tied on this calendar date in each year from 1805 to 1979. 1979 had 736 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 1979-09-21: 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 20	474
20 to 40	86
40 to 60	49
60 to 80	24
80 to 100	4