Weather Records on 18 September 1979

709 weather records were set or tied worldwide on 18 September 1979. Highest significance: Inukjuak Ua, CA.

Key Facts for 18 September 1979

On 18 September 1979, 709 weather records were set or tied at long-record stations worldwide.
202 were record highs and 225 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 21 monthly and 687 daily.
Inukjuak Ua set a monthly record daily snowfall of 19.4 cm (7.6 in) on 18 September 1979.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 420 records.

Record Map

709 stations

709 station records on 18 September 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Inukjuak Ua	Canada	Record daily snowfall	19.4 cm (7.6 in)	67 of 100 (Major)
Mineracao Morro Velho	Brazil	Record daily precipitation	102.0 mm (4.0 in)	64 of 100 (Major)
Ocotlan de Morelos	Mexico	Record daily precipitation	135.9 mm (5.4 in)	57 of 100 (Notable)
Sugartown	United States	Record daily precipitation	104.9 mm (4.1 in)	57 of 100 (Notable)
Santa Barbara Muni AP	United States	Record high minimum temperature	27.2 C (81.0 F)	57 of 100 (Notable)
Ibirite	Brazil	Record daily precipitation	105.0 mm (4.1 in)	56 of 100 (Notable)
Caete	Brazil	Record daily precipitation	70.8 mm (2.8 in)	51 of 100 (Notable)
Fazenda Escola Florestal	Brazil	Record daily precipitation	37.0 mm (1.5 in)	51 of 100 (Notable)
Baependi	Brazil	Record daily precipitation	42.6 mm (1.7 in)	51 of 100 (Notable)
Zametchino	Russia	Record daily precipitation	39.3 mm (1.5 in)	49 of 100 (Notable)
Conceicao Do Rio Verde	Brazil	Record daily precipitation	51.2 mm (2.0 in)	48 of 100 (Notable)
Yoakum	United States	Record daily precipitation	108.5 mm (4.3 in)	48 of 100 (Notable)
Rtiscevo	Russia	Record daily precipitation	35.5 mm (1.4 in)	47 of 100 (Notable)
Usina Peti	Brazil	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Lukojanov	Russia	Record daily precipitation	43.5 mm (1.7 in)	46 of 100 (Notable)
Acaiaca-Jusante	Brazil	Record daily precipitation	42.1 mm (1.7 in)	45 of 100 (Notable)
Usina Couro Do Cervo	Brazil	Record daily precipitation	51.0 mm (2.0 in)	44 of 100 (Notable)
Columbus 4 ESE	United States	Record daily precipitation	52.1 mm (2.1 in)	43 of 100 (Notable)
Murray Lagoon (Hawks Nest)	Australia	Record daily precipitation	33.0 mm (1.3 in)	42 of 100 (Notable)
Taquaracu	Brazil	Record daily precipitation	50.2 mm (2.0 in)	42 of 100 (Notable)
Perth Regional Office	Australia	Record high maximum temperature	27.9 C (82.2 F)	41 of 100 (Notable)
Briksdal	Norway	Record daily precipitation	49.5 mm (1.9 in)	40 of 100 (Notable)
Balbrogie	South Africa	Record daily precipitation	55.0 mm (2.2 in)	40 of 100 (Notable)
Chiricahua Nm	United States	Record low maximum temperature	17.2 C (63.0 F)	40 of 100 (Notable)
W Pt	United States	Record low maximum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Araujos	Brazil	Record daily precipitation	31.2 mm (1.2 in)	39 of 100 (Notable)
Lagoa Grande (Mmv)	Brazil	Record daily precipitation	41.9 mm (1.6 in)	39 of 100 (Notable)
Huejotzingo	Mexico	Record low maximum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Turffontein	South Africa	Record daily precipitation	35.2 mm (1.4 in)	39 of 100 (Notable)
Orogrande	United States	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Port Townsend	United States	Record high minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Pacelma	Russia	Record daily precipitation	48.5 mm (1.9 in)	37 of 100 (Notable)
Dekalb	United States	Record daily precipitation	76.2 mm (3.0 in)	37 of 100 (Notable)
New Braunfels	United States	Record daily precipitation	36.6 mm (1.4 in)	37 of 100 (Notable)
Caixa de Areia	Brazil	Record daily precipitation	60.8 mm (2.4 in)	36 of 100 (Notable)
Ponte Nova Do Paraopeba	Brazil	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Hafslo	Norway	Record daily precipitation	39.4 mm (1.6 in)	36 of 100 (Notable)
Winnfield 3 N	United States	Record daily precipitation	51.3 mm (2.0 in)	36 of 100 (Notable)
Morro Do Pilar	Brazil	Record daily precipitation	27.0 mm (1.1 in)	35 of 100 (Notable)
Tiete	Brazil	Record daily precipitation	42.3 mm (1.7 in)	35 of 100 (Notable)
Cafelandia	Brazil	Record daily precipitation	29.3 mm (1.2 in)	35 of 100 (Notable)
Tepeaca	Mexico	Record low maximum temperature	16.7 C (62.1 F)	35 of 100 (Notable)
Myklebust I Breim	Norway	Record daily precipitation	46.5 mm (1.8 in)	35 of 100 (Notable)
Vik I Sogn III	Norway	Record daily precipitation	45.8 mm (1.8 in)	35 of 100 (Notable)
San Carlos Rsvr	United States	Record low minimum temperature	7.8 C (46.0 F)	35 of 100 (Notable)
Bastos	Brazil	Record daily precipitation	25.6 mm (1.0 in)	34 of 100 (Routine)
Balcon Diablo	Mexico	Record low maximum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Penza	Russia	Record daily precipitation	28.5 mm (1.1 in)	34 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record low maximum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Winkelman 6 S	United States	Record low maximum temperature	26.7 C (80.1 F)	33 of 100 (Routine)
Covington	United States	Record low maximum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Charleston	United States	Record low maximum temperature	21.7 C (71.1 F)	33 of 100 (Routine)
Louisville	United States	Record low maximum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Marshall	United States	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Pachena Point	Canada	Record high maximum temperature	23.3 C (73.9 F)	32 of 100 (Routine)
Buzau	Romania	Record low minimum temperature	2.3 C (36.1 F)	32 of 100 (Routine)
Highland Home	United States	Record low maximum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
Experiment	United States	Record low maximum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Greenville Kgvl Radio	United States	Record low minimum temperature	8.9 C (48.0 F)	32 of 100 (Routine)
Conceicao Do Mato D	Brazil	Record daily precipitation	30.4 mm (1.2 in)	31 of 100 (Routine)

Counts by Type and Timescale

709 records

Records set or tied on 18 September 1979 by type: Highest daily maximum 114, Lowest daily maximum 154, Highest daily minimum 88, Lowest daily minimum 71, Heaviest daily rainfall 280, Heaviest daily snowfall 2.

Records on 18 September 1979 by type
Record type	Records
Highest daily maximum	114
Lowest daily maximum	154
Highest daily minimum	88
Lowest daily minimum	71
Heaviest daily rainfall	280
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 18 September 1979 by timescale: all-time 1, monthly 21, daily 687.

How Much Records Were Beaten By

567 broken records

Margins by which the 567 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.0. Ties are not counted.

Top 20 by Significance

18 September 1979

Top 20 records on 18 September 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1979	Inukjuak Ua, CA	monthly snowfall	19.4 cm (7.6 in)	9.2 cm (3.6 in)	44 years	67 of 100 (Major)
18 September 1979	Mineracao Morro Velho, BR	monthly rain	102.0 mm (4.0 in)	49.2 mm (1.9 in)	36 years	64 of 100 (Major)
18 September 1979	Ocotlan de Morelos, MX	daily rain	135.9 mm (5.4 in)	82.1 mm (3.2 in)	42 years	57 of 100 (Notable)
18 September 1979	Sugartown, US	daily rain	104.9 mm (4.1 in)	54.1 mm (2.1 in)	70 years	57 of 100 (Notable)
18 September 1979	Santa Barbara Muni AP, US	all-time high min	27.2 C (81.0 F)	7.2 C (13.0 F)	20 years	57 of 100 (Notable)
18 September 1979	Ibirite, BR	monthly rain	105.0 mm (4.1 in)	42.0 mm (1.7 in)	23 years	56 of 100 (Notable)
18 September 1979	Caete, BR	daily rain	70.8 mm (2.8 in)	52.4 mm (2.1 in)	26 years	51 of 100 (Notable)
18 September 1979	Fazenda Escola Florestal, BR	daily rain	37.0 mm (1.5 in)	34.4 mm (1.4 in)	36 years	51 of 100 (Notable)
18 September 1979	Baependi, BR	daily rain	42.6 mm (1.7 in)	36.4 mm (1.4 in)	37 years	51 of 100 (Notable)
18 September 1979	Zametchino, RU	monthly rain	39.3 mm (1.5 in)	1.3 mm (0.05 in)	94 years	49 of 100 (Notable)
18 September 1979	Conceicao Do Rio Verde, BR	daily rain	51.2 mm (2.0 in)	39.6 mm (1.6 in)	32 years	48 of 100 (Notable)
18 September 1979	Yoakum, US	daily rain	108.5 mm (4.3 in)	85.1 mm (3.4 in)	8 years	48 of 100 (Notable)
18 September 1979	Rtiscevo, RU	monthly rain	35.5 mm (1.4 in)	9.1 mm (0.36 in)	43 years	47 of 100 (Notable)
18 September 1979	Usina Peti, BR	daily rain	37.6 mm (1.5 in)	28.7 mm (1.1 in)	26 years	46 of 100 (Notable)
18 September 1979	Lukojanov, RU	daily rain	43.5 mm (1.7 in)	25.1 mm (1.0 in)	8 years	46 of 100 (Notable)
18 September 1979	Acaiaca-Jusante, BR	daily rain	42.1 mm (1.7 in)	38.6 mm (1.5 in)	26 years	45 of 100 (Notable)
18 September 1979	Usina Couro Do Cervo, BR	daily rain	51.0 mm (2.0 in)	38.4 mm (1.5 in)	26 years	44 of 100 (Notable)
18 September 1979	Columbus 4 ESE, US	daily rain	52.1 mm (2.1 in)	25.9 mm (1.0 in)	56 years	43 of 100 (Notable)
18 September 1979	Murray Lagoon (Hawks Nest), AU	monthly rain	33.0 mm (1.3 in)	5.8 mm (0.23 in)	45 years	42 of 100 (Notable)
18 September 1979	Taquaracu, BR	monthly rain	50.2 mm (2.0 in)	17.8 mm (0.7 in)	32 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

1803 to 1979

Records set or tied on this calendar date in each year from 1803 to 1979. 1979 had 709 records.

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

Records on 09-18 in each year
Year	Records
1803	1
1811	1
1814	1
1819	1
1829	1
1832	1
1834	1
1835	1
1837	2
1847	2
1848	1
1849	1
1851	4
1859	1
1861	1
1865	1
1869	1
1871	1
1875	1
1876	2
1877	1
1879	1
1880	1
1881	1
1882	1
1885	1
1886	4
1889	6
1890	1
1891	1
1893	4
1894	2
1895	2
1896	4
1897	3
1898	5
1899	3
1900	2
1901	10
1902	8
1903	58
1904	6
1905	22
1906	16
1907	4
1908	11
1909	17
1910	5
1911	8
1912	43
1913	44
1914	56
1915	41
1916	58
1917	99
1918	57
1919	48
1920	56
1921	213
1922	45
1923	114
1924	62
1925	269
1926	205
1927	189
1928	114
1929	309
1930	124
1931	429
1932	226
1933	370
1934	188
1935	281
1936	155
1937	422
1938	373
1939	190
1940	402
1941	318
1942	1,001
1943	624
1944	503
1945	732
1946	576
1947	927
1948	427
1949	356
1950	370
1951	320
1952	340
1953	245
1954	446
1955	672
1956	587
1957	429
1958	491
1959	829
1960	351
1961	478
1962	360
1963	453
1964	282
1965	1,172
1966	498
1967	357
1968	763
1969	424
1970	377
1971	1,245
1972	691
1973	593
1974	559
1975	976
1976	615
1977	619
1978	1,162
1979	709
1980	652
1981	1,671
1982	603
1983	936
1984	951
1985	636
1986	730
1987	1,244
1988	997
1989	778
1990	904
1991	1,377
1992	821
1993	747
1994	852
1995	935
1996	1,237
1997	935
1998	1,038
1999	583
2000	1,146
2001	993
2002	828
2003	815
2004	1,027
2005	781
2006	1,309
2007	670
2008	697
2009	692
2010	1,040
2011	1,050
2012	922
2013	666
2014	682
2015	934
2016	893
2017	518
2018	1,200
2019	768
2020	682
2021	582
2022	613
2023	639
2024	687
2025	471
2026	864

Download the Data

Data for records on 1979-09-18: 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	515
20 to 40	39
40 to 60	8
60 to 80	2
80 to 100	3