Weather Records on 21 October 1957

511 weather records were set or tied worldwide on 21 October 1957. Highest significance: Calgary Int'l A, CA.

Key Facts for 21 October 1957

On 21 October 1957, 511 weather records were set or tied at long-record stations worldwide.
34 were record highs and 95 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 501 daily.
Calgary Int'l A set a daily record snowfall of 23.9 cm (9.4 in) on 21 October 1957.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 419 records.

Record Map

511 stations

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

Weather records on 21 October 1957: highest significance records shown on the map
Station	Country	Type	Value	Significance
Calgary Int'l A	Canada	Record daily snowfall	23.9 cm (9.4 in)	65 of 100 (Major)
Punahana	India	Record daily precipitation	61.0 mm (2.4 in)	61 of 100 (Major)
Srinagar	India	Record daily precipitation	51.3 mm (2.0 in)	55 of 100 (Notable)
Jind	India	Record daily precipitation	64.3 mm (2.5 in)	53 of 100 (Notable)
Paauhau 217	United States	Record daily precipitation	104.6 mm (4.1 in)	52 of 100 (Notable)
Fairmont	United States	Record daily precipitation	25.9 mm (1.0 in)	49 of 100 (Notable)
Lethbridge Cda	Canada	Record daily snowfall	22.9 cm (9.0 in)	48 of 100 (Notable)
Bhiwani	India	Record daily precipitation	50.8 mm (2.0 in)	48 of 100 (Notable)
Vulcan	Canada	Record daily precipitation	30.5 mm (1.2 in)	47 of 100 (Notable)
Kotarh	India	Record daily precipitation	38.6 mm (1.5 in)	46 of 100 (Notable)
Sonamarg &	India	Record daily precipitation	91.4 mm (3.6 in)	46 of 100 (Notable)
Bowen Post Office	Australia	Record daily precipitation	44.2 mm (1.7 in)	45 of 100 (Notable)
Santa Maria	United States	Record daily precipitation	26.7 mm (1.1 in)	45 of 100 (Notable)
Saugus Pwr Plt 1	United States	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Bilgi	India	Record daily precipitation	50.3 mm (2.0 in)	44 of 100 (Notable)
Ahmadnagar	India	Record daily precipitation	76.2 mm (3.0 in)	44 of 100 (Notable)
Jalna	India	Record daily precipitation	58.4 mm (2.3 in)	43 of 100 (Notable)
Guayama 1SW	Puerto Rico [United States]	Record low minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Alpine	United States	Record daily precipitation	33.3 mm (1.3 in)	41 of 100 (Notable)
Hospet	India	Record daily precipitation	66.3 mm (2.6 in)	40 of 100 (Notable)
Cardston	Canada	Record daily snowfall	18.0 cm (7.1 in)	39 of 100 (Notable)
Bhor	India	Record daily precipitation	55.9 mm (2.2 in)	39 of 100 (Notable)
Coimbatore	India	Record daily precipitation	82.3 mm (3.2 in)	39 of 100 (Notable)
Banjar(Saraj-Teh)	India	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Hillsdown	Canada	Record daily snowfall	17.8 cm (7.0 in)	37 of 100 (Notable)
Wai	India	Record daily precipitation	75.2 mm (3.0 in)	37 of 100 (Notable)
Jhunjhunu	India	Record daily precipitation	31.8 mm (1.3 in)	37 of 100 (Notable)
Bergplaats	South Africa	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Grandfalls 3SSE	United States	Record daily precipitation	39.6 mm (1.6 in)	37 of 100 (Notable)
Jamkhandi	India	Record daily precipitation	51.3 mm (2.0 in)	36 of 100 (Notable)
Bhagamandala	India	Record daily precipitation	127.0 mm (5.0 in)	36 of 100 (Notable)
Rodeo (Smn)	Mexico	Record daily precipitation	36.3 mm (1.4 in)	36 of 100 (Notable)
New Braunfels	United States	Record daily precipitation	73.7 mm (2.9 in)	36 of 100 (Notable)
Red Deer	Canada	Record daily snowfall	22.9 cm (9.0 in)	35 of 100 (Notable)
Pekisko	Canada	Record daily snowfall	24.1 cm (9.5 in)	35 of 100 (Notable)
Mandhata	India	Record daily precipitation	33.8 mm (1.3 in)	35 of 100 (Notable)
Jaora	India	Record daily precipitation	55.9 mm (2.2 in)	35 of 100 (Notable)
Prescott	United States	Record daily precipitation	26.7 mm (1.1 in)	35 of 100 (Notable)
Lacombe Cda	Canada	Record daily snowfall	16.5 cm (6.5 in)	34 of 100 (Routine)
Medicine Hat A	Canada	Record daily snowfall	13.0 cm (5.1 in)	33 of 100 (Routine)
Kulu	India	Record daily precipitation	54.1 mm (2.1 in)	33 of 100 (Routine)
Cuatro Cienegas (Smn)	Mexico	Record daily precipitation	29.0 mm (1.1 in)	33 of 100 (Routine)
Tres Piedras	United States	Record daily precipitation	49.0 mm (1.9 in)	33 of 100 (Routine)
Oorlogshoek	South Africa	Record daily precipitation	49.5 mm (1.9 in)	31 of 100 (Routine)
Caldwell	Canada	Record daily snowfall	30.5 cm (12.0 in)	30 of 100 (Routine)
Garden Head	Canada	Record daily snowfall	12.7 cm (5.0 in)	30 of 100 (Routine)
Carson City	United States	Record low maximum temperature	3.9 C (39.0 F)	30 of 100 (Routine)
Sabinal	United States	Record daily precipitation	52.3 mm (2.1 in)	30 of 100 (Routine)
Lytle Creek Ph	United States	Record daily precipitation	29.7 mm (1.2 in)	29 of 100 (Routine)
Jenner	Canada	Record daily snowfall	15.2 cm (6.0 in)	28 of 100 (Routine)
Three Hills	Canada	Record daily snowfall	12.7 cm (5.0 in)	28 of 100 (Routine)
Mountain View	Canada	Record daily snowfall	12.7 cm (5.0 in)	28 of 100 (Routine)
Auraiya	India	Record daily precipitation	40.6 mm (1.6 in)	28 of 100 (Routine)
Brackettville	United States	Record low maximum temperature	17.8 C (64.0 F)	28 of 100 (Routine)
Fort Macleod	Canada	Record daily snowfall	20.3 cm (8.0 in)	27 of 100 (Routine)
Gravelbourg	Canada	Record daily snowfall	5.1 cm (2.0 in)	27 of 100 (Routine)
Wapashoe	Canada	Record daily snowfall	7.6 cm (3.0 in)	27 of 100 (Routine)
Rewari	India	Record daily precipitation	27.2 mm (1.1 in)	27 of 100 (Routine)
Shrigonda	India	Record daily precipitation	33.0 mm (1.3 in)	27 of 100 (Routine)
Post	United States	Record daily precipitation	44.2 mm (1.7 in)	27 of 100 (Routine)

Counts by Type and Timescale

511 records

Records set or tied on 21 October 1957 by type: Highest daily maximum 16, Lowest daily maximum 75, Highest daily minimum 18, Lowest daily minimum 20, Heaviest daily rainfall 342, Heaviest daily snowfall 40.

Records on 21 October 1957 by type
Record type	Records
Highest daily maximum	16
Lowest daily maximum	75
Highest daily minimum	18
Lowest daily minimum	20
Heaviest daily rainfall	342
Heaviest daily snowfall	40
Deepest snow cover	0

Records on 21 October 1957 by timescale: all-time 0, monthly 10, daily 501.

How Much Records Were Beaten By

471 broken records

Margins by which the 471 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

21 October 1957

Top 20 records on 21 October 1957 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1957	Calgary Int'l A, CA	daily snowfall	23.9 cm (9.4 in)	16.3 cm (6.4 in)	63 years	65 of 100 (Major)
21 October 1957	Punahana, IN	daily rain	61.0 mm (2.4 in)	61.0 mm (2.4 in)	56 years	61 of 100 (Major)
21 October 1957	Srinagar, IN	daily rain	51.3 mm (2.0 in)	48.8 mm (1.9 in)	34 years	55 of 100 (Notable)
21 October 1957	Jind, IN	daily rain	64.3 mm (2.5 in)	64.3 mm (2.5 in)	56 years	53 of 100 (Notable)
21 October 1957	Paauhau 217, US	daily rain	104.6 mm (4.1 in)	64.7 mm (2.5 in)	26 years	52 of 100 (Notable)
21 October 1957	Fairmont, US	daily rain	25.9 mm (1.0 in)	24.6 mm (1.0 in)	43 years	49 of 100 (Notable)
21 October 1957	Lethbridge Cda, CA	daily snowfall	22.9 cm (9.0 in)	17.8 cm (7.0 in)	48 years	48 of 100 (Notable)
21 October 1957	Bhiwani, IN	daily rain	50.8 mm (2.0 in)	50.8 mm (2.0 in)	56 years	48 of 100 (Notable)
21 October 1957	Vulcan, CA	daily rain	30.5 mm (1.2 in)	25.4 mm (1.0 in)	14 years	47 of 100 (Notable)
21 October 1957	Kotarh, IN	daily rain	38.6 mm (1.5 in)	38.6 mm (1.5 in)	56 years	46 of 100 (Notable)
21 October 1957	Sonamarg &, IN	daily rain	91.4 mm (3.6 in)	79.2 mm (3.1 in)	34 years	46 of 100 (Notable)
21 October 1957	Bowen Post Office, AU	daily rain	44.2 mm (1.7 in)	34.3 mm (1.4 in)	26 years	45 of 100 (Notable)
21 October 1957	Santa Maria, US	daily rain	26.7 mm (1.1 in)	19.8 mm (0.8 in)	57 years	45 of 100 (Notable)
21 October 1957	Saugus Pwr Plt 1, US	daily rain	34.0 mm (1.3 in)	33.5 mm (1.3 in)	16 years	45 of 100 (Notable)
21 October 1957	Bilgi, IN	daily rain	50.3 mm (2.0 in)	32.5 mm (1.3 in)	56 years	44 of 100 (Notable)
21 October 1957	Ahmadnagar, IN	daily rain	76.2 mm (3.0 in)	60.5 mm (2.4 in)	2 years	44 of 100 (Notable)
21 October 1957	Jalna, IN	daily rain	58.4 mm (2.3 in)	44.4 mm (1.7 in)	12 years	43 of 100 (Notable)
21 October 1957	Guayama 1SW, PR	daily low min	18.3 C (64.9 F)	3.4 C (6.1 F)	39 years	43 of 100 (Notable)
21 October 1957	Alpine, US	daily rain	33.3 mm (1.3 in)	21.9 mm (0.9 in)	43 years	41 of 100 (Notable)
21 October 1957	Hospet, IN	daily rain	66.3 mm (2.6 in)	45.0 mm (1.8 in)	35 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

1795 to 1957

Records set or tied on this calendar date in each year from 1795 to 1957. 1957 had 511 records.

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

Records on 10-21 in each year
Year	Records
1795	1
1802	2
1805	1
1808	1
1810	1
1834	1
1835	1
1840	1
1845	1
1847	1
1850	1
1851	2
1854	1
1859	1
1863	1
1864	1
1866	3
1867	1
1868	3
1869	2
1871	1
1872	1
1873	1
1874	1
1876	4
1877	2
1878	1
1880	3
1881	1
1883	1
1886	1
1888	2
1889	2
1890	3
1891	6
1892	6
1893	1
1894	1
1895	2
1896	5
1898	6
1899	3
1900	2
1901	9
1902	2
1903	3
1904	30
1905	15
1906	11
1907	35
1908	35
1909	19
1910	21
1911	10
1912	18
1913	59
1914	35
1915	43
1916	70
1917	208
1918	18
1919	102
1920	149
1921	58
1922	78
1923	81
1924	389
1925	150
1926	77
1927	187
1928	78
1929	200
1930	492
1931	217
1932	165
1933	733
1934	407
1935	707
1936	407
1937	132
1938	121
1939	491
1940	537
1941	644
1942	258
1943	421
1944	367
1945	538
1946	297
1947	977
1948	266
1949	1,015
1950	438
1951	382
1952	848
1953	1,579
1954	279
1955	481
1956	276
1957	511
1958	322
1959	410
1960	408
1961	553
1962	359
1963	725
1964	457
1965	465
1966	425
1967	472
1968	174
1969	881
1970	548
1971	498
1972	813
1973	464
1974	866
1975	509
1976	1,467
1977	451
1978	616
1979	1,958
1980	378
1981	667
1982	870
1983	786
1984	1,872
1985	776
1986	814
1987	852
1988	696
1989	1,668
1990	807
1991	877
1992	1,095
1993	845
1994	670
1995	1,120
1996	1,581
1997	915
1998	711
1999	688
2000	771
2001	610
2002	1,241
2003	2,066
2004	1,674
2005	949
2006	1,057
2007	916
2008	610
2009	713
2010	710
2011	662
2012	703
2013	440
2014	716
2015	493
2016	734
2017	750
2018	440
2019	757
2020	1,135
2021	574
2022	629
2023	890
2024	1,138
2025	364

Download the Data

Data for records on 1957-10-21: 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 50	439
50 to 100	21
100 to 150	6
150 to 200	4
200 to 250	1