Weather Records on 17 September 1974

491 weather records were set or tied worldwide on 17 September 1974. Highest significance: Kent 5 E, US.

Key Facts for 17 September 1974

On 17 September 1974, 491 weather records were set or tied at long-record stations worldwide.
106 were record highs and 150 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 479 daily.
Kent 5 E set a daily record precipitation of 63.5 mm (2.5 in) on 17 September 1974.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 422 records.

Record Map

491 stations

491 station records on 17 September 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kent 5 E	United States	Record daily precipitation	63.5 mm (2.5 in)	71 of 100 (Major)
Mellenbye	Australia	Record daily precipitation	30.4 mm (1.2 in)	62 of 100 (Major)
Sao Jose de Mipibu	Brazil	Record daily precipitation	42.2 mm (1.7 in)	57 of 100 (Notable)
Taganrog (Lighthouse)	Russia	Record daily precipitation	36.0 mm (1.4 in)	57 of 100 (Notable)
Menard	United States	Record daily precipitation	141.7 mm (5.6 in)	53 of 100 (Notable)
Wateranga	Australia	Record daily precipitation	144.0 mm (5.7 in)	52 of 100 (Notable)
Blackville 3 W	United States	Record daily precipitation	78.2 mm (3.1 in)	51 of 100 (Notable)
Rising Star 1S	United States	Record daily precipitation	115.6 mm (4.6 in)	51 of 100 (Notable)
Orangeburg 2	United States	Record daily precipitation	96.0 mm (3.8 in)	50 of 100 (Notable)
Thiruvananthapuram	India	Record daily precipitation	80.0 mm (3.1 in)	49 of 100 (Notable)
Clontarf Farm	Australia	Record daily precipitation	27.4 mm (1.1 in)	48 of 100 (Notable)
Brownwood 2NE	United States	Record daily precipitation	102.4 mm (4.0 in)	48 of 100 (Notable)
Ignacio Allende	Mexico	Record daily precipitation	59.9 mm (2.4 in)	47 of 100 (Notable)
Eden	United States	Record daily precipitation	129.3 mm (5.1 in)	45 of 100 (Notable)
Montcornet	France	Record daily precipitation	29.4 mm (1.2 in)	44 of 100 (Notable)
Valujki	Russia	Record daily precipitation	42.7 mm (1.7 in)	44 of 100 (Notable)
Hope	United States	Record daily precipitation	42.4 mm (1.7 in)	44 of 100 (Notable)
Itabatinga	Brazil	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
Pedro Velho (Dnocs)	Brazil	Record daily precipitation	85.6 mm (3.4 in)	43 of 100 (Notable)
Milagres	Brazil	Record daily precipitation	32.2 mm (1.3 in)	42 of 100 (Notable)
Carpina (Floresta Dos Leoes)	Brazil	Record daily precipitation	35.2 mm (1.4 in)	42 of 100 (Notable)
Conceicao	Brazil	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Urjupinsk	Russia	Record daily precipitation	40.7 mm (1.6 in)	41 of 100 (Notable)
Kuujjuarapik A	Canada	Record daily snowfall	9.1 cm (3.6 in)	40 of 100 (Notable)
Sonora	United States	Record daily precipitation	91.4 mm (3.6 in)	39 of 100 (Notable)
Rostov-Na-Donu	Russia	Record daily precipitation	25.8 mm (1.0 in)	38 of 100 (Notable)
Mountainair	United States	Record low maximum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Mayhill Rs	United States	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
Oestersund-Froesoen	Sweden	Record high minimum temperature	11.8 C (53.2 F)	36 of 100 (Notable)
Fitzgerald	United States	Record daily precipitation	48.5 mm (1.9 in)	36 of 100 (Notable)
Colorado City	United States	Record low maximum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Texarkana Webb Fld	United States	Record low maximum temperature	19.4 C (66.9 F)	36 of 100 (Notable)
Progresso	United States	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Minsk	Belarus	Record low minimum temperature	-1.1 C (30.0 F)	34 of 100 (Routine)
Porter 2 E	United States	Record daily precipitation	53.8 mm (2.1 in)	34 of 100 (Routine)
Gatesville	United States	Record daily precipitation	68.8 mm (2.7 in)	34 of 100 (Routine)
Paint Rock	United States	Record daily precipitation	66.5 mm (2.6 in)	34 of 100 (Routine)
Kubanskaya Ustevaya	Russia	Record daily precipitation	26.1 mm (1.0 in)	33 of 100 (Routine)
Elk	United States	Record daily precipitation	34.8 mm (1.4 in)	33 of 100 (Routine)
Las Vegas 2 NW	United States	Record low maximum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Temple	United States	Record daily precipitation	62.5 mm (2.5 in)	33 of 100 (Routine)
Doongul State Forest	Australia	Record daily precipitation	50.6 mm (2.0 in)	32 of 100 (Routine)
Patu	Brazil	Record daily precipitation	38.2 mm (1.5 in)	32 of 100 (Routine)
Tussenvier	South Africa	Record daily precipitation	29.6 mm (1.2 in)	32 of 100 (Routine)
Barcelona -Fabra Observatory	Spain	Record daily precipitation	51.0 mm (2.0 in)	32 of 100 (Routine)
Lampasas	United States	Record daily precipitation	42.9 mm (1.7 in)	32 of 100 (Routine)
Keams Canyon	United States	Record low maximum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Mtn Park	United States	Record low maximum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Greenville Kgvl Radio	United States	Record daily precipitation	83.3 mm (3.3 in)	31 of 100 (Routine)
Sonora	United States	Record low maximum temperature	22.8 C (73.0 F)	31 of 100 (Routine)
Priest Rvr Exp STN	United States	Record high minimum temperature	9.4 C (48.9 F)	30 of 100 (Routine)
Mt Vernon 3 NE	United States	Record low maximum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Sandia Park	United States	Record low maximum temperature	11.7 C (53.1 F)	30 of 100 (Routine)
Gilmer 4 WNW	United States	Record daily precipitation	90.7 mm (3.6 in)	30 of 100 (Routine)
Menard	United States	Record low maximum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Perth Regional Office	Australia	Record high minimum temperature	16.0 C (60.8 F)	29 of 100 (Routine)
Graz	Austria	Record high minimum temperature	16.2 C (61.2 F)	29 of 100 (Routine)
Ribeira Do Pombal (Pombal)	Brazil	Record daily precipitation	50.0 mm (2.0 in)	29 of 100 (Routine)
Pecos Nm	United States	Record low maximum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Mont-Aigoual	France	Record daily precipitation	132.0 mm (5.2 in)	28 of 100 (Routine)

Counts by Type and Timescale

491 records

Records set or tied on 17 September 1974 by type: Highest daily maximum 37, Lowest daily maximum 126, Highest daily minimum 69, Lowest daily minimum 24, Heaviest daily rainfall 234, Heaviest daily snowfall 1.

Records on 17 September 1974 by type
Record type	Records
Highest daily maximum	37
Lowest daily maximum	126
Highest daily minimum	69
Lowest daily minimum	24
Heaviest daily rainfall	234
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 17 September 1974 by timescale: all-time 0, monthly 12, daily 479.

How Much Records Were Beaten By

416 broken records

Margins by which the 416 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 95.8. Ties are not counted.

Top 20 by Significance

17 September 1974

Top 20 records on 17 September 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1974	Kent 5 E, US	daily rain	63.5 mm (2.5 in)	47.2 mm (1.9 in)	76 years	71 of 100 (Major)
17 September 1974	Mellenbye, AU	daily rain	30.4 mm (1.2 in)	23.8 mm (0.9 in)	52 years	62 of 100 (Major)
17 September 1974	Sao Jose de Mipibu, BR	daily rain	42.2 mm (1.7 in)	24.8 mm (1.0 in)	39 years	57 of 100 (Notable)
17 September 1974	Taganrog (Lighthouse), RU	daily rain	36.0 mm (1.4 in)	25.5 mm (1.0 in)	48 years	57 of 100 (Notable)
17 September 1974	Menard, US	daily rain	141.7 mm (5.6 in)	91.7 mm (3.6 in)	24 years	53 of 100 (Notable)
17 September 1974	Wateranga, AU	monthly rain	144.0 mm (5.7 in)	46.2 mm (1.8 in)	9 years	52 of 100 (Notable)
17 September 1974	Blackville 3 W, US	daily rain	78.2 mm (3.1 in)	42.9 mm (1.7 in)	71 years	51 of 100 (Notable)
17 September 1974	Rising Star 1S, US	daily rain	115.6 mm (4.6 in)	95.8 mm (3.8 in)	28 years	51 of 100 (Notable)
17 September 1974	Orangeburg 2, US	daily rain	96.0 mm (3.8 in)	93.0 mm (3.7 in)	16 years	50 of 100 (Notable)
17 September 1974	Thiruvananthapuram, IN	daily rain	80.0 mm (3.1 in)	46.0 mm (1.8 in)	47 years	49 of 100 (Notable)
17 September 1974	Clontarf Farm, AU	daily rain	27.4 mm (1.1 in)	18.0 mm (0.7 in)	16 years	48 of 100 (Notable)
17 September 1974	Brownwood 2NE, US	daily rain	102.4 mm (4.0 in)	61.8 mm (2.4 in)	37 years	48 of 100 (Notable)
17 September 1974	Ignacio Allende, MX	daily rain	59.9 mm (2.4 in)	59.6 mm (2.3 in)	16 years	47 of 100 (Notable)
17 September 1974	Eden, US	daily rain	129.3 mm (5.1 in)	65.8 mm (2.6 in)	37 years	45 of 100 (Notable)
17 September 1974	Montcornet, FR	daily rain	29.4 mm (1.2 in)	11.1 mm (0.4 in)	72 years	44 of 100 (Notable)
17 September 1974	Valujki, RU	daily rain	42.7 mm (1.7 in)	36.8 mm (1.4 in)	5 years	44 of 100 (Notable)
17 September 1974	Hope, US	daily rain	42.4 mm (1.7 in)	38.6 mm (1.5 in)	44 years	44 of 100 (Notable)
17 September 1974	Itabatinga, BR	daily rain	33.0 mm (1.3 in)	25.7 mm (1.0 in)	45 years	43 of 100 (Notable)
17 September 1974	Pedro Velho (Dnocs), BR	monthly rain	85.6 mm (3.4 in)	23.6 mm (0.9 in)	2 years	43 of 100 (Notable)
17 September 1974	Milagres, BR	daily rain	32.2 mm (1.3 in)	14.2 mm (0.6 in)	61 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

1796 to 1974

Records set or tied on this calendar date in each year from 1796 to 1974. 1974 had 491 records.

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

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 1974-09-17: 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	370
20 to 40	30
40 to 60	10
60 to 80	2
80 to 100	4