Weather Records on 21 September 1974

652 weather records were set or tied worldwide on 21 September 1974. Highest significance: Kerki, TM.

Key Facts for 21 September 1974

On 21 September 1974, 652 weather records were set or tied at long-record stations worldwide.
154 were record highs and 276 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 20 monthly and 630 daily.
Kerki set an all-time record daily precipitation of 100.1 mm (3.9 in) on 21 September 1974.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 450 records.

Record Map

652 stations

652 station records on 21 September 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kerki	Turkmenistan	Record daily precipitation	100.1 mm (3.9 in)	57 of 100 (Notable)
Huauchinango	Mexico	Record daily precipitation	149.9 mm (5.9 in)	56 of 100 (Notable)
Kent 5 E	United States	Record daily precipitation	34.5 mm (1.4 in)	56 of 100 (Notable)
Songkhla	Thailand	Record daily precipitation	87.7 mm (3.5 in)	51 of 100 (Notable)
Zacualtipan (Smn)	Mexico	Record daily precipitation	176.8 mm (7.0 in)	49 of 100 (Notable)
Huatusco de Chicuellar	Mexico	Record daily precipitation	176.8 mm (7.0 in)	49 of 100 (Notable)
Langmorn	Australia	Record daily precipitation	36.0 mm (1.4 in)	48 of 100 (Notable)
Taipu	Brazil	Record daily precipitation	42.7 mm (1.7 in)	48 of 100 (Notable)
Nueva Casas Grandes	Mexico	Record daily precipitation	42.5 mm (1.7 in)	47 of 100 (Notable)
Nuevo Casas Grandes (Dge)	Mexico	Record daily precipitation	42.4 mm (1.7 in)	47 of 100 (Notable)
Elk	United States	Record daily precipitation	87.6 mm (3.4 in)	47 of 100 (Notable)
Panuco (Smn)	Mexico	Record daily precipitation	149.9 mm (5.9 in)	45 of 100 (Notable)
Rinconada	Mexico	Record daily precipitation	100.8 mm (4.0 in)	44 of 100 (Notable)
Astana	Kazakhstan	Record high minimum temperature	14.5 C (58.1 F)	43 of 100 (Notable)
White River	Canada	Record low maximum temperature	1.7 C (35.1 F)	42 of 100 (Notable)
Ruidoso	United States	Record daily precipitation	34.3 mm (1.4 in)	42 of 100 (Notable)
Magiscatzin (Smn)	Mexico	Record daily precipitation	130.8 mm (5.1 in)	41 of 100 (Notable)
Burleson 2 SSW	United States	Record daily precipitation	99.3 mm (3.9 in)	41 of 100 (Notable)
Fazenda Conquista	Brazil	Record daily precipitation	73.4 mm (2.9 in)	39 of 100 (Notable)
El Chico	Mexico	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)
Tatum	United States	Record low maximum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Marquette	United States	Record low maximum temperature	7.2 C (45.0 F)	38 of 100 (Notable)
Jefferson City Evap	United States	Record daily precipitation	46.5 mm (1.8 in)	37 of 100 (Notable)
Cambridge	United States	Record low maximum temperature	7.2 C (45.0 F)	35 of 100 (Notable)
Magdalena	United States	Record low maximum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Sonora	United States	Record low maximum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
James Island	Canada	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Moncton	Canada	Record daily precipitation	36.3 mm (1.4 in)	34 of 100 (Routine)
Corona	United States	Record daily precipitation	41.4 mm (1.6 in)	34 of 100 (Routine)
Quindalup	Australia	Record daily precipitation	28.0 mm (1.1 in)	33 of 100 (Routine)
Santa Lucia	Brazil	Record daily precipitation	79.6 mm (3.1 in)	33 of 100 (Routine)
Carcross	Canada	Record high maximum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Ferrara	Italy	Record daily precipitation	41.0 mm (1.6 in)	33 of 100 (Routine)
Villagran (Smn)	Mexico	Record daily precipitation	86.9 mm (3.4 in)	33 of 100 (Routine)
Ponce 4 E	Puerto Rico [United States]	Record low maximum temperature	29.4 C (84.9 F)	33 of 100 (Routine)
Bosque del Apache	United States	Record low maximum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Quitaque	United States	Record daily precipitation	61.0 mm (2.4 in)	33 of 100 (Routine)
Quinault Rs	United States	Record high maximum temperature	30.6 C (87.1 F)	33 of 100 (Routine)
Koolau Dam 833	United States	Record daily precipitation	69.9 mm (2.8 in)	33 of 100 (Routine)
Sao Joao da Boa Vista	Brazil	Record daily precipitation	73.7 mm (2.9 in)	32 of 100 (Routine)
Presidio	United States	Record daily precipitation	39.4 mm (1.6 in)	32 of 100 (Routine)
Fazenda Acude	Brazil	Record daily precipitation	47.5 mm (1.9 in)	31 of 100 (Routine)
Marathon	United States	Record daily precipitation	38.6 mm (1.5 in)	31 of 100 (Routine)
Hancock Exp Farm	United States	Record low minimum temperature	-1.7 C (28.9 F)	31 of 100 (Routine)
Bachiniva	Mexico	Record daily precipitation	31.0 mm (1.2 in)	30 of 100 (Routine)
Warroad	United States	Record low maximum temperature	6.1 C (43.0 F)	30 of 100 (Routine)
Espanola	United States	Record low maximum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
Walters	United States	Record daily precipitation	34.3 mm (1.4 in)	30 of 100 (Routine)
Appleton	United States	Record low minimum temperature	-1.7 C (28.9 F)	30 of 100 (Routine)
Cavern City AP	United States	Record daily precipitation	34.3 mm (1.4 in)	30 of 100 (Routine)
San Felipe Orizatlan (Smn)	Mexico	Record daily precipitation	159.8 mm (6.3 in)	29 of 100 (Routine)
Cotija	Mexico	Record low maximum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Juchitan de Zaragoza	Mexico	Record daily precipitation	224.3 mm (8.8 in)	29 of 100 (Routine)
Navojoa (Ffcc)	Mexico	Record low minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Mexia	United States	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
Rockwall	United States	Record daily precipitation	76.2 mm (3.0 in)	29 of 100 (Routine)
Gulkana AP	United States	Record high minimum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
West Quarter	Australia	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Lagoa Branca	Brazil	Record daily precipitation	25.5 mm (1.0 in)	28 of 100 (Routine)
Nueva Casas Grandes	Mexico	Record low maximum temperature	20.0 C (68.0 F)	28 of 100 (Routine)

Counts by Type and Timescale

652 records

Records set or tied on 21 September 1974 by type: Highest daily maximum 87, Lowest daily maximum 180, Highest daily minimum 67, Lowest daily minimum 96, Heaviest daily rainfall 217, Heaviest daily snowfall 5.

Records on 21 September 1974 by type
Record type	Records
Highest daily maximum	87
Lowest daily maximum	180
Highest daily minimum	67
Lowest daily minimum	96
Heaviest daily rainfall	217
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 21 September 1974 by timescale: all-time 2, monthly 20, daily 630.

How Much Records Were Beaten By

515 broken records

Margins by which the 515 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 132.1. Ties are not counted.

Top 20 by Significance

21 September 1974

Top 20 records on 21 September 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1974	Kerki, TM	all-time rain	100.1 mm (3.9 in)	28.1 mm (1.1 in)	20 years	57 of 100 (Notable)
21 September 1974	Huauchinango, MX	daily rain	149.9 mm (5.9 in)	89.2 mm (3.5 in)	39 years	56 of 100 (Notable)
21 September 1974	Kent 5 E, US	daily rain	34.5 mm (1.4 in)	25.9 mm (1.0 in)	80 years	56 of 100 (Notable)
21 September 1974	Songkhla, TH	daily rain	87.7 mm (3.5 in)	71.7 mm (2.8 in)	28 years	51 of 100 (Notable)
21 September 1974	Zacualtipan (Smn), MX	daily rain	176.8 mm (7.0 in)	129.8 mm (5.1 in)	21 years	49 of 100 (Notable)
21 September 1974	Huatusco de Chicuellar, MX	daily rain	176.8 mm (7.0 in)	109.0 mm (4.3 in)	12 years	49 of 100 (Notable)
21 September 1974	Langmorn, AU	daily rain	36.0 mm (1.4 in)	18.0 mm (0.7 in)	83 years	48 of 100 (Notable)
21 September 1974	Taipu, BR	daily rain	42.7 mm (1.7 in)	39.3 mm (1.5 in)	9 years	48 of 100 (Notable)
21 September 1974	Nueva Casas Grandes, MX	daily rain	42.5 mm (1.7 in)	40.2 mm (1.6 in)	15 years	47 of 100 (Notable)
21 September 1974	Nuevo Casas Grandes (Dge), MX	daily rain	42.4 mm (1.7 in)	40.1 mm (1.6 in)	15 years	47 of 100 (Notable)
21 September 1974	Elk, US	all-time rain	87.6 mm (3.4 in)	19.3 mm (0.8 in)	0 years	47 of 100 (Notable)
21 September 1974	Panuco (Smn), MX	daily rain	149.9 mm (5.9 in)	132.1 mm (5.2 in)	8 years	45 of 100 (Notable)
21 September 1974	Rinconada, MX	daily rain	100.8 mm (4.0 in)	60.9 mm (2.4 in)	20 years	44 of 100 (Notable)
21 September 1974	Astana, KZ	daily high min	14.5 C (58.1 F)	4.7 C (8.5 F)	76 years	43 of 100 (Notable)
21 September 1974	White River, CA	daily low max	1.7 C (35.1 F)	5.5 C (9.9 F)	84 years	42 of 100 (Notable)
21 September 1974	Ruidoso, US	daily rain	34.3 mm (1.4 in)	31.3 mm (1.2 in)	11 years	42 of 100 (Notable)
21 September 1974	Magiscatzin (Smn), MX	monthly rain	130.8 mm (5.1 in)	39.9 mm (1.6 in)	6 years	41 of 100 (Notable)
21 September 1974	Burleson 2 SSW, US	monthly rain	99.3 mm (3.9 in)	29.4 mm (1.2 in)	27 years	41 of 100 (Notable)
21 September 1974	Fazenda Conquista, BR	monthly rain	73.4 mm (2.9 in)	26.5 mm (1.0 in)	3 years	39 of 100 (Notable)
21 September 1974	El Chico, MX	daily rain	88.9 mm (3.5 in)	54.1 mm (2.1 in)	8 years	39 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

1805 to 1974

Records set or tied on this calendar date in each year from 1805 to 1974. 1974 had 652 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	591
2026	478

Download the Data

Data for records on 1974-09-21: 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	464
20 to 40	34
40 to 60	9
60 to 80	3
80 to 100	2
100 to 120	1
120 to 140	2