Weather Records on 11 September 1974

430 weather records were set or tied worldwide on 11 September 1974. Highest significance: Idabel, US.

Key Facts for 11 September 1974

On 11 September 1974, 430 weather records were set or tied at long-record stations worldwide.
161 were record highs and 111 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 5 monthly and 424 daily.
Idabel set a daily record precipitation of 144.8 mm (5.7 in) on 11 September 1974.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 423 records.

Record Map

430 stations

430 station records on 11 September 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Idabel	United States	Record daily precipitation	144.8 mm (5.7 in)	54 of 100 (Notable)
Ibiapina	Brazil	Record daily precipitation	110.1 mm (4.3 in)	51 of 100 (Notable)
Harrison	United States	Record daily precipitation	51.3 mm (2.0 in)	46 of 100 (Notable)
Waterford (Tycor)	Ireland	Record daily precipitation	58.0 mm (2.3 in)	45 of 100 (Notable)
Hafslo	Norway	Record daily precipitation	43.8 mm (1.7 in)	45 of 100 (Notable)
Mattoon	United States	Record daily precipitation	29.2 mm (1.1 in)	45 of 100 (Notable)
Earlton A	Canada	Record daily precipitation	46.5 mm (1.8 in)	43 of 100 (Notable)
Mena	United States	Record daily precipitation	113.3 mm (4.5 in)	42 of 100 (Notable)
Pointe Au Pere	Canada	Record daily precipitation	39.4 mm (1.6 in)	40 of 100 (Notable)
Mt Pleasant	United States	Record daily precipitation	86.9 mm (3.4 in)	40 of 100 (Notable)
Ozark	United States	Record daily precipitation	61.5 mm (2.4 in)	39 of 100 (Notable)
Crandall Creek	United States	Record daily precipitation	34.3 mm (1.4 in)	39 of 100 (Notable)
Crandall Creek	United States	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Myklebust I Breim	Norway	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Berd	Armenia	Record daily precipitation	84.7 mm (3.3 in)	37 of 100 (Notable)
Smithville	United States	Record daily precipitation	54.6 mm (2.1 in)	37 of 100 (Notable)
Tuskahoma	United States	Record daily precipitation	66.8 mm (2.6 in)	37 of 100 (Notable)
Odzun	Armenia	Record daily precipitation	30.2 mm (1.2 in)	36 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record low maximum temperature	28.3 C (82.9 F)	36 of 100 (Notable)
Blowing Rock 1NW	United States	Record daily precipitation	74.9 mm (2.9 in)	36 of 100 (Notable)
Poteau	United States	Record daily precipitation	52.3 mm (2.1 in)	36 of 100 (Notable)
San Juan de Los Llanos	Mexico	Record daily precipitation	47.0 mm (1.9 in)	35 of 100 (Notable)
Tenerife/Los Rodeos	Spain	Record high minimum temperature	22.0 C (71.6 F)	35 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high minimum temperature	20.6 C (69.1 F)	34 of 100 (Routine)
Red Lodge	United States	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Broken Bow 1 N	United States	Record daily precipitation	84.6 mm (3.3 in)	34 of 100 (Routine)
Gravelly	United States	Record daily precipitation	56.4 mm (2.2 in)	33 of 100 (Routine)
Lead Hill	United States	Record daily precipitation	49.5 mm (1.9 in)	33 of 100 (Routine)
Edwardsport Pwr Plt	United States	Record daily precipitation	48.0 mm (1.9 in)	33 of 100 (Routine)
Willow Lock 13	United States	Record daily precipitation	45.0 mm (1.8 in)	33 of 100 (Routine)
Hillsboro	United States	Record high maximum temperature	36.1 C (97.0 F)	33 of 100 (Routine)
Carter Twr	United States	Record daily precipitation	84.3 mm (3.3 in)	33 of 100 (Routine)
Wilburton 9 ENE	United States	Record daily precipitation	64.5 mm (2.5 in)	33 of 100 (Routine)
Irapuato	Mexico	Record low minimum temperature	8.9 C (48.0 F)	32 of 100 (Routine)
Russellville	United States	Record daily precipitation	45.0 mm (1.8 in)	32 of 100 (Routine)
Osceola	United States	Record high minimum temperature	20.6 C (69.1 F)	32 of 100 (Routine)
Elk	United States	Record high maximum temperature	31.7 C (89.1 F)	32 of 100 (Routine)
Laguna	United States	Record high maximum temperature	34.4 C (93.9 F)	32 of 100 (Routine)
Paragonah	United States	Record low minimum temperature	0.6 C (33.1 F)	32 of 100 (Routine)
El Salto (Smn)	Mexico	Record low minimum temperature	-2.2 C (28.0 F)	31 of 100 (Routine)
Mulberry 6 NNE	United States	Record daily precipitation	55.9 mm (2.2 in)	31 of 100 (Routine)
Greenville 2 W	United States	Record daily precipitation	70.4 mm (2.8 in)	31 of 100 (Routine)
Dublin Phoenix Park	Ireland	Record daily precipitation	28.2 mm (1.1 in)	30 of 100 (Routine)
Ft Ross	United States	Record high maximum temperature	26.1 C (79.0 F)	30 of 100 (Routine)
Montrose #2	United States	Record high minimum temperature	17.2 C (63.0 F)	29 of 100 (Routine)
Mystic Lake	United States	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Quinton	United States	Record daily precipitation	41.9 mm (1.6 in)	29 of 100 (Routine)
Rio Formoso	Brazil	Record daily precipitation	40.1 mm (1.6 in)	28 of 100 (Routine)
Yurecuaro	Mexico	Record low minimum temperature	10.6 C (51.1 F)	28 of 100 (Routine)
Odesa	Ukraine	Record high minimum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Mesa	United States	Record high maximum temperature	42.2 C (108.0 F)	28 of 100 (Routine)
Ft Smith Wtp	United States	Record daily precipitation	56.1 mm (2.2 in)	28 of 100 (Routine)
Mystic Lake	United States	Record daily snowfall	15.2 cm (6.0 in)	28 of 100 (Routine)
San Jon	United States	Record high maximum temperature	37.8 C (100.0 F)	28 of 100 (Routine)
Tucumcari 4 NE	United States	Record high maximum temperature	36.7 C (98.1 F)	28 of 100 (Routine)
Portage des Roches	Canada	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Subiaco	United States	Record daily precipitation	54.9 mm (2.2 in)	27 of 100 (Routine)
Holly	United States	Record high maximum temperature	37.8 C (100.0 F)	27 of 100 (Routine)
Challis	United States	Record low maximum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Wasola 5N	United States	Record daily precipitation	54.4 mm (2.1 in)	27 of 100 (Routine)

Counts by Type and Timescale

430 records

Records set or tied on 11 September 1974 by type: Highest daily maximum 83, Lowest daily maximum 47, Highest daily minimum 78, Lowest daily minimum 64, Heaviest daily rainfall 153, Heaviest daily snowfall 5.

Records on 11 September 1974 by type
Record type	Records
Highest daily maximum	83
Lowest daily maximum	47
Highest daily minimum	78
Lowest daily minimum	64
Heaviest daily rainfall	153
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 11 September 1974 by timescale: all-time 1, monthly 5, daily 424.

How Much Records Were Beaten By

330 broken records

Margins by which the 330 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 139.7. Ties are not counted.

Top 20 by Significance

11 September 1974

Top 20 records on 11 September 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 1974	Idabel, US	daily rain	144.8 mm (5.7 in)	139.7 mm (5.5 in)	28 years	54 of 100 (Notable)
11 September 1974	Ibiapina, BR	monthly rain	110.1 mm (4.3 in)	37.1 mm (1.5 in)	7 years	51 of 100 (Notable)
11 September 1974	Harrison, US	daily rain	51.3 mm (2.0 in)	30.7 mm (1.2 in)	72 years	46 of 100 (Notable)
11 September 1974	Waterford (Tycor), IE	daily rain	58.0 mm (2.3 in)	37.9 mm (1.5 in)	8 years	45 of 100 (Notable)
11 September 1974	Hafslo, NO	daily rain	43.8 mm (1.7 in)	15.8 mm (0.6 in)	51 years	45 of 100 (Notable)
11 September 1974	Mattoon, US	daily rain	29.2 mm (1.1 in)	19.0 mm (0.7 in)	80 years	45 of 100 (Notable)
11 September 1974	Earlton A, CA	daily rain	46.5 mm (1.8 in)	32.5 mm (1.3 in)	20 years	43 of 100 (Notable)
11 September 1974	Mena, US	daily rain	113.3 mm (4.5 in)	21.4 mm (0.8 in)	81 years	42 of 100 (Notable)
11 September 1974	Pointe Au Pere, CA	daily rain	39.4 mm (1.6 in)	17.8 mm (0.7 in)	28 years	40 of 100 (Notable)
11 September 1974	Mt Pleasant, US	daily rain	86.9 mm (3.4 in)	45.0 mm (1.8 in)	40 years	40 of 100 (Notable)
11 September 1974	Ozark, US	daily rain	61.5 mm (2.4 in)	45.0 mm (1.8 in)	19 years	39 of 100 (Notable)
11 September 1974	Crandall Creek, US	daily rain	34.3 mm (1.4 in)	21.3 mm (0.8 in)	12 years	39 of 100 (Notable)
11 September 1974	Crandall Creek, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	60 years	39 of 100 (Notable)
11 September 1974	Myklebust I Breim, NO	daily rain	61.0 mm (2.4 in)	15.8 mm (0.6 in)	55 years	38 of 100 (Notable)
11 September 1974	Berd, AM	all-time rain	84.7 mm (3.3 in)	6.0 mm (0.24 in)	17 years	37 of 100 (Notable)
11 September 1974	Smithville, US	daily rain	54.6 mm (2.1 in)	42.7 mm (1.7 in)	36 years	37 of 100 (Notable)
11 September 1974	Tuskahoma, US	daily rain	66.8 mm (2.6 in)	45.7 mm (1.8 in)	28 years	37 of 100 (Notable)
11 September 1974	Odzun, AM	daily rain	30.2 mm (1.2 in)	16.7 mm (0.7 in)	19 years	36 of 100 (Notable)
11 September 1974	Isabela Substn, PR	daily low max	28.3 C (82.9 F)	1.1 C (2.0 F)	71 years	36 of 100 (Notable)
11 September 1974	Blowing Rock 1NW, US	daily rain	74.9 mm (2.9 in)	47.0 mm (1.9 in)	29 years	36 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

1809 to 1974

Records set or tied on this calendar date in each year from 1809 to 1974. 1974 had 430 records.

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

Records on 09-11 in each year
Year	Records
1809	1
1814	3
1818	1
1830	1
1836	1
1838	3
1839	1
1848	1
1850	1
1851	1
1854	2
1858	1
1860	2
1861	1
1863	2
1865	3
1866	1
1874	2
1876	1
1877	1
1879	1
1880	1
1882	4
1883	2
1884	1
1886	1
1888	2
1889	4
1890	2
1891	2
1892	1
1893	4
1894	2
1895	4
1896	1
1897	3
1898	3
1899	5
1900	1
1901	3
1902	15
1903	13
1904	4
1905	5
1906	10
1907	9
1908	20
1909	12
1910	19
1911	9
1912	25
1913	22
1914	52
1915	160
1916	17
1917	88
1918	62
1919	52
1920	158
1921	52
1922	78
1923	44
1924	290
1925	260
1926	137
1927	300
1928	127
1929	206
1930	136
1931	868
1932	210
1933	276
1934	144
1935	410
1936	567
1937	324
1938	288
1939	561
1940	891
1941	210
1942	234
1943	335
1944	446
1945	341
1946	262
1947	611
1948	424
1949	450
1950	462
1951	247
1952	549
1953	392
1954	363
1955	479
1956	539
1957	470
1958	748
1959	488
1960	423
1961	524
1962	480
1963	359
1964	1,195
1965	414
1966	392
1967	478
1968	835
1969	685
1970	474
1971	464
1972	507
1973	612
1974	430
1975	644
1976	920
1977	406
1978	911
1979	596
1980	474
1981	347
1982	862
1983	1,243
1984	888
1985	844
1986	1,221
1987	595
1988	1,019
1989	1,301
1990	840
1991	843
1992	672
1993	809
1994	713
1995	619
1996	1,030
1997	808
1998	1,821
1999	1,073
2000	1,469
2001	826
2002	1,059
2003	1,022
2004	740
2005	1,163
2006	1,132
2007	947
2008	916
2009	774
2010	965
2011	1,051
2012	687
2013	1,207
2014	1,100
2015	683
2016	677
2017	916
2018	763
2019	806
2020	1,235
2021	851
2022	617
2023	1,034
2024	889
2025	917
2026	615

Download the Data

Data for records on 1974-09-11: 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	297
20 to 40	22
40 to 60	6
60 to 80	2
80 to 100	0
100 to 120	2
120 to 140	1