Weather Records on 18 September 1974

559 weather records were set or tied worldwide on 18 September 1974. Highest significance: Nova Cruz, BR.

Key Facts for 18 September 1974

On 18 September 1974, 559 weather records were set or tied at long-record stations worldwide.
110 were record highs and 139 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 33 monthly and 524 daily.
Nova Cruz set a monthly record daily precipitation of 69.9 mm (2.8 in) on 18 September 1974.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 420 records.

Record Map

559 stations

559 station records on 18 September 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nova Cruz	Brazil	Record daily precipitation	69.9 mm (2.8 in)	66 of 100 (Major)
Veraval	India	Record daily precipitation	380.0 mm (15.0 in)	65 of 100 (Major)
Acude Malhada Vermelha	Brazil	Record daily precipitation	41.4 mm (1.6 in)	64 of 100 (Major)
Many Peaks Post Office	Australia	Record daily precipitation	65.0 mm (2.6 in)	63 of 100 (Major)
Ibiapina	Brazil	Record daily precipitation	62.1 mm (2.4 in)	62 of 100 (Major)
Sao Jose de Mipibu	Brazil	Record daily precipitation	62.3 mm (2.5 in)	62 of 100 (Major)
Kirkalocka	Australia	Record daily precipitation	50.0 mm (2.0 in)	61 of 100 (Major)
"Kageon" Dawes	Australia	Record daily precipitation	59.0 mm (2.3 in)	60 of 100 (Major)
Aratuba	Brazil	Record daily precipitation	64.2 mm (2.5 in)	57 of 100 (Notable)
Barra Do Jua	Brazil	Record daily precipitation	84.0 mm (3.3 in)	56 of 100 (Notable)
Thangool Airport	Australia	Record daily precipitation	52.0 mm (2.0 in)	54 of 100 (Notable)
Kapskarmo	Norway	Record daily precipitation	47.3 mm (1.9 in)	54 of 100 (Notable)
Barfield	Australia	Record daily precipitation	65.0 mm (2.6 in)	53 of 100 (Notable)
Burnerbinmah	Australia	Record daily precipitation	30.4 mm (1.2 in)	51 of 100 (Notable)
Mombaca	Brazil	Record daily precipitation	53.0 mm (2.1 in)	51 of 100 (Notable)
Cottbus	Germany	Record daily precipitation	40.3 mm (1.6 in)	51 of 100 (Notable)
Dunderlandsdalen	Norway	Record daily precipitation	48.5 mm (1.9 in)	51 of 100 (Notable)
Morada Nova	Brazil	Record daily precipitation	47.0 mm (1.9 in)	50 of 100 (Notable)
Catole Do Rocha	Brazil	Record daily precipitation	32.0 mm (1.3 in)	48 of 100 (Notable)
Giessen/Wettenberg	Germany	Record daily precipitation	25.5 mm (1.0 in)	48 of 100 (Notable)
Lnai Culture & Heritage Ctr	United States	Record daily precipitation	74.2 mm (2.9 in)	48 of 100 (Notable)
Ubobo Store	Australia	Record daily precipitation	51.2 mm (2.0 in)	47 of 100 (Notable)
Pendencias	Brazil	Record daily precipitation	39.0 mm (1.5 in)	47 of 100 (Notable)
Cotonou	Benin	Record daily precipitation	79.5 mm (3.1 in)	46 of 100 (Notable)
Canguaretama	Brazil	Record daily precipitation	53.6 mm (2.1 in)	46 of 100 (Notable)
Boonara	Australia	Record daily precipitation	75.0 mm (3.0 in)	44 of 100 (Notable)
Catingueira (Juca)	Brazil	Record daily precipitation	28.3 mm (1.1 in)	44 of 100 (Notable)
Nord-Rana	Norway	Record daily precipitation	51.2 mm (2.0 in)	44 of 100 (Notable)
Emerald Post Office	Australia	Record low maximum temperature	14.5 C (58.1 F)	43 of 100 (Notable)
Hohenpeissenberg	Germany	Record daily precipitation	30.7 mm (1.2 in)	43 of 100 (Notable)
Carlsbad	United States	Record daily precipitation	59.2 mm (2.3 in)	43 of 100 (Notable)
Aracati	Brazil	Record daily precipitation	35.3 mm (1.4 in)	42 of 100 (Notable)
Itapeim	Brazil	Record daily precipitation	25.1 mm (1.0 in)	41 of 100 (Notable)
Mineirolandia	Brazil	Record daily precipitation	38.1 mm (1.5 in)	41 of 100 (Notable)
Broken Hill (Kars)	Australia	Record daily precipitation	25.0 mm (1.0 in)	40 of 100 (Notable)
Martins	Brazil	Record daily precipitation	44.0 mm (1.7 in)	40 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record daily precipitation	34.0 mm (1.3 in)	40 of 100 (Notable)
Krakmo	Norway	Record daily precipitation	33.8 mm (1.3 in)	40 of 100 (Notable)
Balmorhea	United States	Record daily precipitation	39.6 mm (1.6 in)	40 of 100 (Notable)
Bundaberg Post Office	Australia	Record low maximum temperature	18.0 C (64.4 F)	39 of 100 (Notable)
Millaquin Sugar	Australia	Record daily precipitation	65.0 mm (2.6 in)	39 of 100 (Notable)
Elk	United States	Record low maximum temperature	15.6 C (60.1 F)	39 of 100 (Notable)
Nuuanu Rsch 4 783	United States	Record daily precipitation	66.5 mm (2.6 in)	39 of 100 (Notable)
Brooweena Lahey St	Australia	Record daily precipitation	52.4 mm (2.1 in)	38 of 100 (Notable)
Jaguaruana	Brazil	Record daily precipitation	40.4 mm (1.6 in)	38 of 100 (Notable)
Eagle Farm Racecourse	Australia	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Kaawaloa 29	United States	Record daily precipitation	83.1 mm (3.3 in)	37 of 100 (Notable)
Jimenez (Smn)	Mexico	Record daily precipitation	25.7 mm (1.0 in)	36 of 100 (Notable)
Tewantin Post Office	Australia	Record low maximum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Doongul State Forest	Australia	Record daily precipitation	45.4 mm (1.8 in)	34 of 100 (Routine)
Boqueirao Do Patu	Brazil	Record daily precipitation	38.4 mm (1.5 in)	34 of 100 (Routine)
Palhano	Brazil	Record daily precipitation	33.2 mm (1.3 in)	34 of 100 (Routine)
Nenastnaja	Russia	Record daily precipitation	42.3 mm (1.7 in)	34 of 100 (Routine)
Santa Barbara	United States	Record low maximum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
Jornada Exp Range	United States	Record low maximum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Bunya Bunya	Australia	Record daily precipitation	27.6 mm (1.1 in)	33 of 100 (Routine)
Perth Regional Office	Australia	Record high minimum temperature	16.5 C (61.7 F)	33 of 100 (Routine)
Woolooga Post Office	Australia	Record daily precipitation	38.0 mm (1.5 in)	33 of 100 (Routine)
S. Goncalo	Brazil	Record daily precipitation	31.2 mm (1.2 in)	33 of 100 (Routine)
Natashquan A	Canada	Record low maximum temperature	0.0 C (32.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

559 records

Records set or tied on 18 September 1974 by type: Highest daily maximum 57, Lowest daily maximum 85, Highest daily minimum 53, Lowest daily minimum 54, Heaviest daily rainfall 309, Heaviest daily snowfall 1.

Records on 18 September 1974 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	85
Highest daily minimum	53
Lowest daily minimum	54
Heaviest daily rainfall	309
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 18 September 1974 by timescale: all-time 2, monthly 33, daily 524.

How Much Records Were Beaten By

474 broken records

Margins by which the 474 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.4. Ties are not counted.

Top 20 by Significance

18 September 1974

Top 20 records on 18 September 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1974	Nova Cruz, BR	monthly rain	69.9 mm (2.8 in)	31.9 mm (1.3 in)	43 years	66 of 100 (Major)
18 September 1974	Veraval, IN	all-time rain	380.0 mm (15.0 in)	78.4 mm (3.1 in)	14 years	65 of 100 (Major)
18 September 1974	Acude Malhada Vermelha, BR	monthly rain	41.4 mm (1.6 in)	35.5 mm (1.4 in)	48 years	64 of 100 (Major)
18 September 1974	Many Peaks Post Office, AU	daily rain	65.0 mm (2.6 in)	51.0 mm (2.0 in)	56 years	63 of 100 (Major)
18 September 1974	Ibiapina, BR	daily rain	62.1 mm (2.4 in)	56.6 mm (2.2 in)	55 years	62 of 100 (Major)
18 September 1974	Sao Jose de Mipibu, BR	daily rain	62.3 mm (2.5 in)	42.3 mm (1.7 in)	56 years	62 of 100 (Major)
18 September 1974	Kirkalocka, AU	monthly rain	50.0 mm (2.0 in)	31.2 mm (1.2 in)	18 years	61 of 100 (Major)
18 September 1974	"Kageon" Dawes, AU	monthly rain	59.0 mm (2.3 in)	24.7 mm (1.0 in)	40 years	60 of 100 (Major)
18 September 1974	Aratuba, BR	monthly rain	64.2 mm (2.5 in)	34.6 mm (1.4 in)	10 years	57 of 100 (Notable)
18 September 1974	Barra Do Jua, BR	monthly rain	84.0 mm (3.3 in)	63.0 mm (2.5 in)	7 years	56 of 100 (Notable)
18 September 1974	Thangool Airport, AU	daily rain	52.0 mm (2.0 in)	45.4 mm (1.8 in)	33 years	54 of 100 (Notable)
18 September 1974	Kapskarmo, NO	daily rain	47.3 mm (1.9 in)	20.9 mm (0.8 in)	75 years	54 of 100 (Notable)
18 September 1974	Barfield, AU	daily rain	65.0 mm (2.6 in)	54.8 mm (2.2 in)	29 years	53 of 100 (Notable)
18 September 1974	Burnerbinmah, AU	monthly rain	30.4 mm (1.2 in)	8.6 mm (0.34 in)	19 years	51 of 100 (Notable)
18 September 1974	Mombaca, BR	daily rain	53.0 mm (2.1 in)	38.0 mm (1.5 in)	20 years	51 of 100 (Notable)
18 September 1974	Cottbus, DE	daily rain	40.3 mm (1.6 in)	26.6 mm (1.0 in)	11 years	51 of 100 (Notable)
18 September 1974	Dunderlandsdalen, NO	daily rain	48.5 mm (1.9 in)	26.5 mm (1.0 in)	45 years	51 of 100 (Notable)
18 September 1974	Morada Nova, BR	monthly rain	47.0 mm (1.9 in)	18.0 mm (0.7 in)	56 years	50 of 100 (Notable)
18 September 1974	Catole Do Rocha, BR	monthly rain	32.0 mm (1.3 in)	13.3 mm (0.5 in)	28 years	48 of 100 (Notable)
18 September 1974	Giessen/Wettenberg, DE	daily rain	25.5 mm (1.0 in)	19.6 mm (0.8 in)	21 years	48 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 1974

Records set or tied on this calendar date in each year from 1803 to 1974. 1974 had 559 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 1974-09-18: 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 10	361
10 to 20	61
20 to 30	28
30 to 40	12
40 to 50	7
50 to 60	3
60 to 70	1
70 to 80	1