Weather Records on 21 October 1975

509 weather records were set or tied worldwide on 21 October 1975. Highest significance: Springvale, AU.

Key Facts for 21 October 1975

On 21 October 1975, 509 weather records were set or tied at long-record stations worldwide.
127 were record highs and 66 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 19 monthly and 490 daily.
Springvale set a monthly record daily precipitation of 57.4 mm (2.3 in) on 21 October 1975.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 419 records.

Record Map

509 stations

509 station records on 21 October 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Springvale	Australia	Record daily precipitation	57.4 mm (2.3 in)	64 of 100 (Major)
Diamantina Lakes	Australia	Record daily precipitation	28.0 mm (1.1 in)	58 of 100 (Notable)
Big Timber	United States	Record daily precipitation	39.1 mm (1.5 in)	58 of 100 (Notable)
Glenormiston	Australia	Record daily precipitation	29.0 mm (1.1 in)	56 of 100 (Notable)
Cottonwood	United States	Record daily precipitation	38.4 mm (1.5 in)	56 of 100 (Notable)
Wondoola Station	Australia	Record daily precipitation	31.0 mm (1.2 in)	55 of 100 (Notable)
Headingly Station	Australia	Record daily precipitation	41.2 mm (1.6 in)	55 of 100 (Notable)
Marion Downs	Australia	Record daily precipitation	36.4 mm (1.4 in)	55 of 100 (Notable)
Cape Cleveland Lighthouse	Australia	Record daily precipitation	52.4 mm (2.1 in)	53 of 100 (Notable)
Millungera Station	Australia	Record daily precipitation	38.0 mm (1.5 in)	52 of 100 (Notable)
Emmaville (Strathbogie)	Australia	Record daily precipitation	35.1 mm (1.4 in)	51 of 100 (Notable)
Ivano-Frankivsk	Ukraine	Record daily precipitation	32.2 mm (1.3 in)	51 of 100 (Notable)
Bremer Bay	Australia	Record daily precipitation	45.0 mm (1.8 in)	50 of 100 (Notable)
Angurugu	Australia	Record daily precipitation	46.2 mm (1.8 in)	50 of 100 (Notable)
Daly Waters	Australia	Record daily precipitation	36.5 mm (1.4 in)	49 of 100 (Notable)
Barkly Downs	Australia	Record daily precipitation	44.2 mm (1.7 in)	49 of 100 (Notable)
Stonehenge	Australia	Record daily precipitation	51.2 mm (2.0 in)	49 of 100 (Notable)
East Anaconda	United States	Record daily precipitation	25.1 mm (1.0 in)	49 of 100 (Notable)
Alexandria	Australia	Record daily precipitation	58.6 mm (2.3 in)	48 of 100 (Notable)
Donors Hill Station	Australia	Record daily precipitation	26.6 mm (1.0 in)	48 of 100 (Notable)
Inkerman Station	Australia	Record daily precipitation	67.0 mm (2.6 in)	45 of 100 (Notable)
Barber	United States	Record daily precipitation	30.2 mm (1.2 in)	45 of 100 (Notable)
Rapelje	United States	Record daily precipitation	38.6 mm (1.5 in)	45 of 100 (Notable)
Lake Nash	Australia	Record daily precipitation	27.0 mm (1.1 in)	44 of 100 (Notable)
Huntley Exp STN	United States	Record daily precipitation	27.2 mm (1.1 in)	44 of 100 (Notable)
Bustard Head Lighthouse	Australia	Record daily precipitation	66.2 mm (2.6 in)	42 of 100 (Notable)
Numil Downs Station	Australia	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
Byfield Childs Road	Australia	Record daily precipitation	53.0 mm (2.1 in)	41 of 100 (Notable)
Townsville Aero	Australia	Record daily precipitation	36.2 mm (1.4 in)	40 of 100 (Notable)
Lethebrook	Australia	Record daily precipitation	58.4 mm (2.3 in)	39 of 100 (Notable)
The Valley	Australia	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Tullaroop Reservoir	Australia	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Kooskia	United States	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Kajabbi Kalkadoon Hotel	Australia	Record daily precipitation	32.0 mm (1.3 in)	38 of 100 (Notable)
Lucinda Township	Australia	Record daily precipitation	46.8 mm (1.8 in)	38 of 100 (Notable)
Kalamia Estate	Australia	Record daily precipitation	80.0 mm (3.1 in)	38 of 100 (Notable)
Rapelje	United States	Record snow depth	10.2 cm (4.0 in)	38 of 100 (Notable)
Reid River Railway Station	Australia	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Fairbanks Intl AP	United States	Record daily snowfall	19.3 cm (7.6 in)	37 of 100 (Notable)
Kuttabul Post Office	Australia	Record daily precipitation	52.0 mm (2.0 in)	36 of 100 (Notable)
Martinsdale 3 NNW	United States	Record daily snowfall	27.9 cm (11.0 in)	36 of 100 (Notable)
Wallowa	United States	Record daily precipitation	36.8 mm (1.4 in)	36 of 100 (Notable)
Gumlu Days Road	Australia	Record daily precipitation	32.0 mm (1.3 in)	35 of 100 (Notable)
Hamilton	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Burketown Post Office	Australia	Record low maximum temperature	26.0 C (78.8 F)	34 of 100 (Routine)
Home Hill Post Office	Australia	Record daily precipitation	56.6 mm (2.2 in)	34 of 100 (Routine)
Vergemont	Australia	Record daily precipitation	31.2 mm (1.2 in)	34 of 100 (Routine)
Paratinga	Brazil	Record daily precipitation	38.2 mm (1.5 in)	34 of 100 (Routine)
Superior	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Hume Reservoir	Australia	Record daily precipitation	66.2 mm (2.6 in)	33 of 100 (Routine)
Izmail	Ukraine	Record high minimum temperature	13.6 C (56.5 F)	33 of 100 (Routine)
Bingil Bay	Australia	Record daily precipitation	60.2 mm (2.4 in)	32 of 100 (Routine)
Kroombit	Australia	Record daily precipitation	39.0 mm (1.5 in)	32 of 100 (Routine)
Mount Fairy (Merigan)	Australia	Record daily precipitation	30.2 mm (1.2 in)	32 of 100 (Routine)
Fenn Rs	United States	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Pratt 3NW	United States	Record high maximum temperature	32.2 C (90.0 F)	32 of 100 (Routine)
Richland	United States	Record high minimum temperature	7.8 C (46.0 F)	32 of 100 (Routine)
Camooweal Township	Australia	Record low maximum temperature	23.9 C (75.0 F)	31 of 100 (Routine)
Medicine Lodge	United States	Record high maximum temperature	33.9 C (93.0 F)	31 of 100 (Routine)
Molalla	United States	Record daily precipitation	51.6 mm (2.0 in)	31 of 100 (Routine)

Counts by Type and Timescale

509 records

Records set or tied on 21 October 1975 by type: Highest daily maximum 59, Lowest daily maximum 24, Highest daily minimum 68, Lowest daily minimum 42, Heaviest daily rainfall 299, Heaviest daily snowfall 15, Deepest snow cover 2.

Records on 21 October 1975 by type
Record type	Records
Highest daily maximum	59
Lowest daily maximum	24
Highest daily minimum	68
Lowest daily minimum	42
Heaviest daily rainfall	299
Heaviest daily snowfall	15
Deepest snow cover	2

Records on 21 October 1975 by timescale: all-time 0, monthly 19, daily 490.

How Much Records Were Beaten By

433 broken records

Margins by which the 433 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.0. Ties are not counted.

Top 20 by Significance

21 October 1975

Top 20 records on 21 October 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1975	Springvale, AU	monthly rain	57.4 mm (2.3 in)	30.0 mm (1.2 in)	22 years	64 of 100 (Major)
21 October 1975	Diamantina Lakes, AU	daily rain	28.0 mm (1.1 in)	28.0 mm (1.1 in)	84 years	58 of 100 (Notable)
21 October 1975	Big Timber, US	daily rain	39.1 mm (1.5 in)	26.4 mm (1.0 in)	61 years	58 of 100 (Notable)
21 October 1975	Glenormiston, AU	daily rain	29.0 mm (1.1 in)	26.0 mm (1.0 in)	40 years	56 of 100 (Notable)
21 October 1975	Cottonwood, US	daily rain	38.4 mm (1.5 in)	30.0 mm (1.2 in)	28 years	56 of 100 (Notable)
21 October 1975	Wondoola Station, AU	daily rain	31.0 mm (1.2 in)	31.0 mm (1.2 in)	60 years	55 of 100 (Notable)
21 October 1975	Headingly Station, AU	daily rain	41.2 mm (1.6 in)	35.4 mm (1.4 in)	32 years	55 of 100 (Notable)
21 October 1975	Marion Downs, AU	daily rain	36.4 mm (1.4 in)	23.7 mm (0.9 in)	58 years	55 of 100 (Notable)
21 October 1975	Cape Cleveland Lighthouse, AU	daily rain	52.4 mm (2.1 in)	43.5 mm (1.7 in)	32 years	53 of 100 (Notable)
21 October 1975	Millungera Station, AU	daily rain	38.0 mm (1.5 in)	35.7 mm (1.4 in)	40 years	52 of 100 (Notable)
21 October 1975	Emmaville (Strathbogie), AU	daily rain	35.1 mm (1.4 in)	14.8 mm (0.6 in)	99 years	51 of 100 (Notable)
21 October 1975	Ivano-Frankivsk, UA	daily rain	32.2 mm (1.3 in)	22.7 mm (0.9 in)	28 years	51 of 100 (Notable)
21 October 1975	Bremer Bay, AU	daily rain	45.0 mm (1.8 in)	25.4 mm (1.0 in)	9 years	50 of 100 (Notable)
21 October 1975	Angurugu, AU	daily rain	46.2 mm (1.8 in)	40.6 mm (1.6 in)	50 years	50 of 100 (Notable)
21 October 1975	Daly Waters, AU	daily rain	36.5 mm (1.4 in)	19.0 mm (0.7 in)	72 years	49 of 100 (Notable)
21 October 1975	Barkly Downs, AU	daily rain	44.2 mm (1.7 in)	36.6 mm (1.4 in)	40 years	49 of 100 (Notable)
21 October 1975	Stonehenge, AU	daily rain	51.2 mm (2.0 in)	48.2 mm (1.9 in)	13 years	49 of 100 (Notable)
21 October 1975	East Anaconda, US	daily rain	25.1 mm (1.0 in)	16.2 mm (0.6 in)	13 years	49 of 100 (Notable)
21 October 1975	Alexandria, AU	monthly rain	58.6 mm (2.3 in)	19.7 mm (0.8 in)	5 years	48 of 100 (Notable)
21 October 1975	Donors Hill Station, AU	daily rain	26.6 mm (1.0 in)	19.5 mm (0.8 in)	83 years	48 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 1975

Records set or tied on this calendar date in each year from 1795 to 1975. 1975 had 509 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 1975-10-21: 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 20	381
20 to 40	34
40 to 60	12
60 to 80	5
80 to 100	0
100 to 120	1