Weather Records on 15 September 1974

386 weather records were set or tied worldwide on 15 September 1974. Highest significance: Red Hill South, AU.

Key Facts for 15 September 1974

On 15 September 1974, 386 weather records were set or tied at long-record stations worldwide.
60 were record highs and 194 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 2 monthly and 383 daily.
Red Hill South set a daily record precipitation of 27.1 mm (1.1 in) on 15 September 1974.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 413 records.

Record Map

386 stations

386 station records on 15 September 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Red Hill South	Australia	Record daily precipitation	27.1 mm (1.1 in)	47 of 100 (Notable)
Westcliffe	United States	Record daily precipitation	26.4 mm (1.0 in)	43 of 100 (Notable)
Columbus	United States	Record daily precipitation	26.7 mm (1.1 in)	43 of 100 (Notable)
Llano	United States	Record low maximum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Im. Poliny Osipenko	Russia	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	8.1 C (46.6 F)	37 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record low maximum temperature	28.3 C (82.9 F)	36 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record low minimum temperature	-10.6 C (12.9 F)	35 of 100 (Notable)
Cekunda	Russia	Record daily precipitation	39.8 mm (1.6 in)	34 of 100 (Routine)
Gunnison 3SW	United States	Record low maximum temperature	12.8 C (55.0 F)	34 of 100 (Routine)
Dunedin	South Africa	Record daily precipitation	29.5 mm (1.2 in)	33 of 100 (Routine)
Artesia 6S	United States	Record low maximum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Clarke City	Canada	Record low maximum temperature	7.8 C (46.0 F)	32 of 100 (Routine)
Poona	India	Record daily precipitation	53.1 mm (2.1 in)	32 of 100 (Routine)
Pacelma	Russia	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Cookeville	United States	Record low maximum temperature	16.7 C (62.1 F)	32 of 100 (Routine)
Le Bourget	France	Record daily precipitation	25.4 mm (1.0 in)	30 of 100 (Routine)
Hillsboro	United States	Record low maximum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Palestine 2 NE	United States	Record low maximum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Sagaredzo	Georgia	Record daily precipitation	33.6 mm (1.3 in)	29 of 100 (Routine)
Budgeree East (Claremont)	Australia	Record daily precipitation	31.4 mm (1.2 in)	28 of 100 (Routine)
Maryville 2E	United States	Record low minimum temperature	0.6 C (33.1 F)	28 of 100 (Routine)
Mtn Park	United States	Record daily precipitation	27.7 mm (1.1 in)	28 of 100 (Routine)
Corsicana	United States	Record low maximum temperature	19.4 C (66.9 F)	28 of 100 (Routine)
Temple	United States	Record low maximum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Debrecen Airport	Hungary	Record high minimum temperature	15.8 C (60.4 F)	27 of 100 (Routine)
Sutur	Russia	Record daily precipitation	62.3 mm (2.5 in)	27 of 100 (Routine)
Augustine 2E	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Kaufman 3 SE	United States	Record low maximum temperature	21.1 C (70.0 F)	27 of 100 (Routine)
Luling	United States	Record low maximum temperature	20.6 C (69.1 F)	27 of 100 (Routine)
Bratoljubovka	Russia	Record daily precipitation	39.5 mm (1.6 in)	26 of 100 (Routine)
Alamogordo	United States	Record low maximum temperature	19.4 C (66.9 F)	26 of 100 (Routine)
Hope	United States	Record low maximum temperature	18.9 C (66.0 F)	26 of 100 (Routine)
Lebanon	United States	Record low maximum temperature	20.0 C (68.0 F)	26 of 100 (Routine)
Vjazemskaja	Russia	Record daily precipitation	38.0 mm (1.5 in)	25 of 100 (Routine)
Bailey	United States	Record low maximum temperature	11.1 C (52.0 F)	25 of 100 (Routine)
Jornada Exp Range	United States	Record low maximum temperature	22.2 C (72.0 F)	25 of 100 (Routine)
Mescalero	United States	Record low maximum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
Hanksville	United States	Record low maximum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
Natashquan A	Canada	Record low minimum temperature	-2.8 C (27.0 F)	24 of 100 (Routine)
Camden 1	United States	Record low maximum temperature	22.8 C (73.0 F)	24 of 100 (Routine)
Oshkosh	United States	Record low minimum temperature	2.8 C (37.0 F)	24 of 100 (Routine)
Wink FAA AP	United States	Record daily precipitation	32.8 mm (1.3 in)	24 of 100 (Routine)
Onslow Airport	Australia	Record high minimum temperature	23.9 C (75.0 F)	23 of 100 (Routine)
Ahuacatlan	Mexico	Record daily precipitation	50.8 mm (2.0 in)	23 of 100 (Routine)
Bogorodskoe	Russia	Record daily precipitation	29.6 mm (1.2 in)	23 of 100 (Routine)
Laguna	United States	Record low maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Koosharem	United States	Record low maximum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Gary	United States	Record low maximum temperature	16.7 C (62.1 F)	23 of 100 (Routine)
Stojba	Russia	Record daily precipitation	29.8 mm (1.2 in)	22 of 100 (Routine)
Ust-Umalta	Russia	Record daily precipitation	32.4 mm (1.3 in)	22 of 100 (Routine)
Jonesboro 3 SSE	United States	Record low minimum temperature	8.9 C (48.0 F)	22 of 100 (Routine)
Oolitic Purdue Ex Fm	United States	Record low minimum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Des Moines	United States	Record low maximum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Imperial	United States	Record daily precipitation	31.8 mm (1.3 in)	22 of 100 (Routine)
Harris	Canada	Record high maximum temperature	28.3 C (82.9 F)	21 of 100 (Routine)
Kent 5 E	United States	Record daily precipitation	39.6 mm (1.6 in)	21 of 100 (Routine)
Del Norte 3ENE	United States	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Botataboomen	South Africa	Record daily precipitation	20.5 mm (0.8 in)	20 of 100 (Routine)
Cowes	Australia	Record daily precipitation	20.4 mm (0.8 in)	20 of 100 (Routine)

Counts by Type and Timescale

386 records

Records set or tied on 15 September 1974 by type: Highest daily maximum 26, Lowest daily maximum 152, Highest daily minimum 34, Lowest daily minimum 42, Heaviest daily rainfall 132.

Records on 15 September 1974 by type
Record type	Records
Highest daily maximum	26
Lowest daily maximum	152
Highest daily minimum	34
Lowest daily minimum	42
Heaviest daily rainfall	132
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 September 1974 by timescale: all-time 1, monthly 2, daily 383.

How Much Records Were Beaten By

298 broken records

Margins by which the 298 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 27.2. Ties are not counted.

Top 20 by Significance

15 September 1974

Top 20 records on 15 September 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 1974	Red Hill South, AU	daily rain	27.1 mm (1.1 in)	12.4 mm (0.5 in)	72 years	47 of 100 (Notable)
15 September 1974	Westcliffe, US	daily rain	26.4 mm (1.0 in)	12.9 mm (0.5 in)	60 years	43 of 100 (Notable)
15 September 1974	Columbus, US	daily rain	26.7 mm (1.1 in)	17.0 mm (0.7 in)	60 years	43 of 100 (Notable)
15 September 1974	Llano, US	daily low max	18.9 C (66.0 F)	5.5 C (9.9 F)	60 years	38 of 100 (Notable)
15 September 1974	Im. Poliny Osipenko, RU	daily rain	35.6 mm (1.4 in)	17.3 mm (0.7 in)	37 years	37 of 100 (Notable)
15 September 1974	Col du Grand St-Bernard, CH	daily high min	8.1 C (46.6 F)	0.4 C (0.7 F)	88 years	37 of 100 (Notable)
15 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)
15 September 1974	Yellowstone Park Mammoth, US	daily low min	-10.6 C (12.9 F)	2.8 C (5.0 F)	71 years	35 of 100 (Notable)
15 September 1974	Cekunda, RU	daily rain	39.8 mm (1.6 in)	18.8 mm (0.7 in)	20 years	34 of 100 (Routine)
15 September 1974	Gunnison 3SW, US	daily low max	12.8 C (55.0 F)	2.2 C (4.0 F)	71 years	34 of 100 (Routine)
15 September 1974	Dunedin, ZA	daily rain	29.5 mm (1.2 in)	17.5 mm (0.7 in)	16 years	33 of 100 (Routine)
15 September 1974	Artesia 6S, US	daily low max	18.3 C (64.9 F)	4.5 C (8.1 F)	57 years	33 of 100 (Routine)
15 September 1974	Clarke City, CA	daily low max	7.8 C (46.0 F)	2.8 C (5.0 F)	64 years	32 of 100 (Routine)
15 September 1974	Poona, IN	daily rain	53.1 mm (2.1 in)	22.4 mm (0.9 in)	36 years	32 of 100 (Routine)
15 September 1974	Pacelma, RU	daily rain	34.3 mm (1.4 in)	14.0 mm (0.6 in)	17 years	32 of 100 (Routine)
15 September 1974	Cookeville, US	daily low max	16.7 C (62.1 F)	4.4 C (7.9 F)	51 years	32 of 100 (Routine)
15 September 1974	Le Bourget, FR	daily rain	25.4 mm (1.0 in)	6.9 mm (0.27 in)	36 years	30 of 100 (Routine)
15 September 1974	Hillsboro, US	daily low max	20.0 C (68.0 F)	2.2 C (4.0 F)	60 years	30 of 100 (Routine)
15 September 1974	Palestine 2 NE, US	daily low max	19.4 C (66.9 F)	5.6 C (10.1 F)	40 years	30 of 100 (Routine)
15 September 1974	Sagaredzo, GE	daily rain	33.6 mm (1.3 in)	15.7 mm (0.6 in)	33 years	29 of 100 (Routine)

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

1797 to 1974

Records set or tied on this calendar date in each year from 1797 to 1974. 1974 had 386 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 1974-09-15: 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 5	227
5 to 10	35
10 to 15	23
15 to 20	9
20 to 25	3
25 to 30	1