Weather Records on 21 September 1957

366 weather records were set or tied worldwide on 21 September 1957. Highest significance: Pauls Valley 4 WSW, US.

Key Facts for 21 September 1957

On 21 September 1957, 366 weather records were set or tied at long-record stations worldwide.
162 were record highs and 77 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 4 monthly and 361 daily.
Pauls Valley 4 WSW set a daily record precipitation of 102.4 mm (4.0 in) on 21 September 1957.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 451 records.

Record Map

366 stations

366 station records on 21 September 1957 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1957: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pauls Valley 4 WSW	United States	Record daily precipitation	102.4 mm (4.0 in)	60 of 100 (Major)
Marion 2 N	United States	Record daily precipitation	83.1 mm (3.3 in)	57 of 100 (Notable)
Ashland	United States	Record daily precipitation	86.9 mm (3.4 in)	56 of 100 (Notable)
Hilo 86A	United States	Record high minimum temperature	26.1 C (79.0 F)	56 of 100 (Notable)
Cloud Chief 2 SE	United States	Record daily precipitation	62.0 mm (2.4 in)	55 of 100 (Notable)
Chicoutimi	Canada	Record daily precipitation	57.7 mm (2.3 in)	52 of 100 (Notable)
Purushottampur	India	Record daily precipitation	114.3 mm (4.5 in)	47 of 100 (Notable)
Cuatro Cienegas (Smn)	Mexico	Record daily precipitation	46.5 mm (1.8 in)	47 of 100 (Notable)
Sulphur Platt Nat'l Pk	United States	Record daily precipitation	108.2 mm (4.3 in)	47 of 100 (Notable)
Sterling City	United States	Record daily precipitation	95.3 mm (3.8 in)	47 of 100 (Notable)
Carnegie 5 NE	United States	Record daily precipitation	71.1 mm (2.8 in)	46 of 100 (Notable)
Lawton	United States	Record daily precipitation	83.8 mm (3.3 in)	46 of 100 (Notable)
La Rue	United States	Record daily precipitation	58.4 mm (2.3 in)	44 of 100 (Notable)
Apache	United States	Record daily precipitation	165.6 mm (6.5 in)	44 of 100 (Notable)
Chickasha	United States	Record daily precipitation	123.7 mm (4.9 in)	43 of 100 (Notable)
St Fereol	Canada	Record daily precipitation	61.0 mm (2.4 in)	42 of 100 (Notable)
Prospect	United States	Record daily precipitation	47.2 mm (1.9 in)	42 of 100 (Notable)
Ottawa	United States	Record daily precipitation	136.1 mm (5.4 in)	40 of 100 (Notable)
Wooster Exp STN	United States	Record daily precipitation	56.9 mm (2.2 in)	40 of 100 (Notable)
Butler	United States	Record daily precipitation	44.7 mm (1.8 in)	40 of 100 (Notable)
Keokuk L&D 19	United States	Record daily precipitation	44.2 mm (1.7 in)	39 of 100 (Notable)
Wichita Mtn Wr	United States	Record daily precipitation	70.4 mm (2.8 in)	39 of 100 (Notable)
Norman 3SSE	United States	Record daily precipitation	61.7 mm (2.4 in)	37 of 100 (Notable)
Purcell 2 SW	United States	Record daily precipitation	94.2 mm (3.7 in)	37 of 100 (Notable)
Eureka	South Africa	Record daily precipitation	28.0 mm (1.1 in)	36 of 100 (Notable)
Vanur	India	Record daily precipitation	69.6 mm (2.7 in)	35 of 100 (Notable)
Harrow Cda	Canada	Record daily precipitation	37.1 mm (1.5 in)	32 of 100 (Routine)
Quebec	Canada	Record daily precipitation	29.2 mm (1.1 in)	32 of 100 (Routine)
Booneville	United States	Record daily precipitation	51.8 mm (2.0 in)	32 of 100 (Routine)
Kulattur	India	Record daily precipitation	53.8 mm (2.1 in)	29 of 100 (Routine)
Monroe	United States	Record daily precipitation	44.5 mm (1.8 in)	29 of 100 (Routine)
Everett	United States	Record high minimum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Dwaleni	Swaziland	Record daily precipitation	30.0 mm (1.2 in)	29 of 100 (Routine)
Ekaterinburg	Russia	Record high minimum temperature	12.7 C (54.9 F)	28 of 100 (Routine)
Rock 1 E	United States	Record daily precipitation	48.3 mm (1.9 in)	28 of 100 (Routine)
Port Stanley	Canada	Record high minimum temperature	19.4 C (66.9 F)	27 of 100 (Routine)
Chute A Murdock	Canada	Record daily precipitation	36.6 mm (1.4 in)	27 of 100 (Routine)
Freiburg	Germany	Record high maximum temperature	25.3 C (77.5 F)	27 of 100 (Routine)
Grenola 1 N	United States	Record daily precipitation	46.2 mm (1.8 in)	27 of 100 (Routine)
Olathe 3E	United States	Record daily precipitation	90.2 mm (3.6 in)	27 of 100 (Routine)
Cowles	United States	Record low minimum temperature	-5.0 C (23.0 F)	27 of 100 (Routine)
Ada	United States	Record daily precipitation	93.0 mm (3.7 in)	27 of 100 (Routine)
Marlow 1 WSW	United States	Record daily precipitation	55.9 mm (2.2 in)	27 of 100 (Routine)
Beaver Falls 1 NE	United States	Record daily precipitation	43.2 mm (1.7 in)	27 of 100 (Routine)
Winters 9 NNE	United States	Record daily precipitation	49.5 mm (1.9 in)	27 of 100 (Routine)
San Diego de la Union	Mexico	Record daily precipitation	37.8 mm (1.5 in)	26 of 100 (Routine)
Blagovescensk	Russia	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Fayetteville	United States	Record daily precipitation	46.7 mm (1.8 in)	26 of 100 (Routine)
Wakeeney	United States	Record low maximum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Syracuse	United States	Record low maximum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Carrizozo 1SW	United States	Record low minimum temperature	3.9 C (39.0 F)	26 of 100 (Routine)
York 3 SSW Pump STN	United States	Record high minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Brownsville	United States	Record daily precipitation	27.2 mm (1.1 in)	26 of 100 (Routine)
Gaspe	Canada	Record daily precipitation	38.1 mm (1.5 in)	25 of 100 (Routine)
Ekaterinburg	Russia	Record high maximum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Upper Sandusky	United States	Record high minimum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Union City 3 SE	United States	Record daily precipitation	43.4 mm (1.7 in)	25 of 100 (Routine)
Creekside	United States	Record daily precipitation	34.8 mm (1.4 in)	25 of 100 (Routine)
Schenley Lock 5	United States	Record daily precipitation	52.8 mm (2.1 in)	25 of 100 (Routine)
Rio Grande City	United States	Record high minimum temperature	26.1 C (79.0 F)	25 of 100 (Routine)

Counts by Type and Timescale

366 records

Records set or tied on 21 September 1957 by type: Highest daily maximum 12, Lowest daily maximum 43, Highest daily minimum 150, Lowest daily minimum 34, Heaviest daily rainfall 126, Heaviest daily snowfall 1.

Records on 21 September 1957 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	43
Highest daily minimum	150
Lowest daily minimum	34
Heaviest daily rainfall	126
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 21 September 1957 by timescale: all-time 1, monthly 4, daily 361.

How Much Records Were Beaten By

259 broken records

Margins by which the 259 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 87.4. Ties are not counted.

Top 20 by Significance

21 September 1957

Top 20 records on 21 September 1957 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1957	Pauls Valley 4 WSW, US	daily rain	102.4 mm (4.0 in)	82.1 mm (3.2 in)	50 years	60 of 100 (Major)
21 September 1957	Marion 2 N, US	daily rain	83.1 mm (3.3 in)	60.2 mm (2.4 in)	38 years	57 of 100 (Notable)
21 September 1957	Ashland, US	daily rain	86.9 mm (3.4 in)	61.5 mm (2.4 in)	34 years	56 of 100 (Notable)
21 September 1957	Hilo 86A, US	daily high min	26.1 C (79.0 F)	5.0 C (9.0 F)	38 years	56 of 100 (Notable)
21 September 1957	Cloud Chief 2 SE, US	daily rain	62.0 mm (2.4 in)	47.3 mm (1.9 in)	63 years	55 of 100 (Notable)
21 September 1957	Chicoutimi, CA	daily rain	57.7 mm (2.3 in)	30.3 mm (1.2 in)	16 years	52 of 100 (Notable)
21 September 1957	Purushottampur, IN	daily rain	114.3 mm (4.5 in)	66.5 mm (2.6 in)	31 years	47 of 100 (Notable)
21 September 1957	Cuatro Cienegas (Smn), MX	daily rain	46.5 mm (1.8 in)	31.5 mm (1.2 in)	28 years	47 of 100 (Notable)
21 September 1957	Sulphur Platt Nat'l Pk, US	daily rain	108.2 mm (4.3 in)	87.4 mm (3.4 in)	11 years	47 of 100 (Notable)
21 September 1957	Sterling City, US	daily rain	95.3 mm (3.8 in)	80.1 mm (3.2 in)	24 years	47 of 100 (Notable)
21 September 1957	Carnegie 5 NE, US	daily rain	71.1 mm (2.8 in)	60.9 mm (2.4 in)	20 years	46 of 100 (Notable)
21 September 1957	Lawton, US	daily rain	83.8 mm (3.3 in)	63.5 mm (2.5 in)	38 years	46 of 100 (Notable)
21 September 1957	La Rue, US	daily rain	58.4 mm (2.3 in)	42.4 mm (1.7 in)	8 years	44 of 100 (Notable)
21 September 1957	Apache, US	all-time rain	165.6 mm (6.5 in)	32.0 mm (1.3 in)	11 years	44 of 100 (Notable)
21 September 1957	Chickasha, US	monthly rain	123.7 mm (4.9 in)	35.1 mm (1.4 in)	28 years	43 of 100 (Notable)
21 September 1957	St Fereol, CA	daily rain	61.0 mm (2.4 in)	37.4 mm (1.5 in)	42 years	42 of 100 (Notable)
21 September 1957	Prospect, US	daily rain	47.2 mm (1.9 in)	29.9 mm (1.2 in)	36 years	42 of 100 (Notable)
21 September 1957	Ottawa, US	daily rain	136.1 mm (5.4 in)	45.9 mm (1.8 in)	26 years	40 of 100 (Notable)
21 September 1957	Wooster Exp STN, US	daily rain	56.9 mm (2.2 in)	35.3 mm (1.4 in)	10 years	40 of 100 (Notable)
21 September 1957	Butler, US	daily rain	44.7 mm (1.8 in)	32.8 mm (1.3 in)	12 years	40 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 1957

Records set or tied on this calendar date in each year from 1805 to 1957. 1957 had 366 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	588
2026	469

Download the Data

Data for records on 1957-09-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	220
20 to 40	24
40 to 60	5
60 to 80	7
80 to 100	3