Weather Records on 21 October 1987

852 weather records were set or tied worldwide on 21 October 1987. Highest significance: Malin Head, IE.

Key Facts for 21 October 1987

On 21 October 1987, 852 weather records were set or tied at long-record stations worldwide.
156 were record highs and 495 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 21 monthly and 830 daily.
Malin Head set a monthly record daily precipitation of 60.0 mm (2.4 in) on 21 October 1987.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 417 records.

Record Map

852 stations

852 station records on 21 October 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Malin Head	Ireland	Record daily precipitation	60.0 mm (2.4 in)	72 of 100 (Major)
Cataract Dam	Australia	Record daily precipitation	98.0 mm (3.9 in)	69 of 100 (Major)
Armagh	United Kingdom	Record daily precipitation	52.1 mm (2.1 in)	69 of 100 (Major)
Metzingen	Germany	Record daily precipitation	37.9 mm (1.5 in)	52 of 100 (Notable)
Reutlingen-Betzingen	Germany	Record daily precipitation	29.6 mm (1.2 in)	52 of 100 (Notable)
Ballyshannon (Cathleens Fall)	Ireland	Record daily precipitation	40.2 mm (1.6 in)	51 of 100 (Notable)
Stuttgart/Echterdingen	Germany	Record daily precipitation	27.0 mm (1.1 in)	51 of 100 (Notable)
Kamensk-Uralskij	Russia	Record daily precipitation	80.0 mm (3.1 in)	51 of 100 (Notable)
Stuttgart-Stadt	Germany	Record daily precipitation	27.0 mm (1.1 in)	50 of 100 (Notable)
Appin Church St	Australia	Record daily precipitation	58.9 mm (2.3 in)	49 of 100 (Notable)
Nurtingen	Germany	Record daily precipitation	35.9 mm (1.4 in)	46 of 100 (Notable)
Menangle Jmai	Australia	Record daily precipitation	36.6 mm (1.4 in)	44 of 100 (Notable)
Uruapan (Smn)	Mexico	Record high minimum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Sugar Camp	United States	Record daily snowfall	6.4 cm (2.5 in)	42 of 100 (Notable)
Midland	United States	Record low minimum temperature	-12.8 C (9.0 F)	41 of 100 (Notable)
Berowra (Goodwyn Road)	Australia	Record daily precipitation	55.0 mm (2.2 in)	40 of 100 (Notable)
Creighton	United States	Record low minimum temperature	-9.4 C (15.1 F)	40 of 100 (Notable)
Springview 2NW	United States	Record low minimum temperature	-9.4 C (15.1 F)	40 of 100 (Notable)
Mellen 4 NE	United States	Record daily snowfall	33.0 cm (13.0 in)	40 of 100 (Notable)
Mellen 4 NE	United States	Record snow depth	33.0 cm (13.0 in)	40 of 100 (Notable)
Manly Vale (Manly Dam)	Australia	Record daily precipitation	61.6 mm (2.4 in)	39 of 100 (Notable)
Sidney 1SSE	United States	Record low minimum temperature	-3.9 C (25.0 F)	39 of 100 (Notable)
Greeley	United States	Record low minimum temperature	-12.2 C (10.0 F)	39 of 100 (Notable)
Sao Vicente	Brazil	Record daily precipitation	99.4 mm (3.9 in)	38 of 100 (Notable)
Broken Bow 2 W	United States	Record low minimum temperature	-13.3 C (8.1 F)	38 of 100 (Notable)
Gothenburg	United States	Record low minimum temperature	-9.4 C (15.1 F)	38 of 100 (Notable)
Aberdeen	United States	Record low minimum temperature	-12.8 C (9.0 F)	38 of 100 (Notable)
Gosford (Narara Research Stati	Australia	Record daily precipitation	68.2 mm (2.7 in)	37 of 100 (Notable)
Epping Chester Street	Australia	Record daily precipitation	39.0 mm (1.5 in)	37 of 100 (Notable)
San Miguelito	Mexico	Record daily precipitation	79.8 mm (3.1 in)	37 of 100 (Notable)
Phillipsburg 1 SSE	United States	Record low minimum temperature	-6.7 C (19.9 F)	37 of 100 (Notable)
Monroe City	United States	Record low minimum temperature	-3.9 C (25.0 F)	37 of 100 (Notable)
Minden	United States	Record low minimum temperature	-9.4 C (15.1 F)	37 of 100 (Notable)
N Loup	United States	Record low minimum temperature	-11.1 C (12.0 F)	37 of 100 (Notable)
Wahroonga Reservoir	Australia	Record daily precipitation	55.4 mm (2.2 in)	36 of 100 (Notable)
Tel Aviv Reading	Israel	Record daily precipitation	40.9 mm (1.6 in)	36 of 100 (Notable)
Genoa 2 W	United States	Record low minimum temperature	-11.1 C (12.0 F)	36 of 100 (Notable)
Purdum	United States	Record low minimum temperature	-11.1 C (12.0 F)	36 of 100 (Notable)
Ashfield Bowling Club	Australia	Record daily precipitation	41.0 mm (1.6 in)	35 of 100 (Notable)
Picinguaba	Brazil	Record daily precipitation	81.7 mm (3.2 in)	35 of 100 (Notable)
Halsey 2 W	United States	Record low minimum temperature	-10.0 C (14.0 F)	35 of 100 (Notable)
Hebron	United States	Record low minimum temperature	-6.1 C (21.0 F)	35 of 100 (Notable)
Red Cloud	United States	Record low minimum temperature	-10.0 C (14.0 F)	35 of 100 (Notable)
Wessington Springs	United States	Record low minimum temperature	-6.1 C (21.0 F)	35 of 100 (Notable)
Mora	United States	Record snow depth	10.2 cm (4.0 in)	34 of 100 (Routine)
Greenville	United States	Record low maximum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Crete 4ESE	United States	Record low minimum temperature	-7.8 C (18.0 F)	34 of 100 (Routine)
Madison	United States	Record low minimum temperature	-10.0 C (14.0 F)	34 of 100 (Routine)
Koloa 936	United States	Record daily precipitation	47.2 mm (1.9 in)	34 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record daily precipitation	55.8 mm (2.2 in)	33 of 100 (Routine)
Bolivar 1 NE	United States	Record low minimum temperature	-6.7 C (19.9 F)	33 of 100 (Routine)
Fairmont	United States	Record low minimum temperature	-6.7 C (19.9 F)	33 of 100 (Routine)
Kearney 4 NE	United States	Record low minimum temperature	-8.9 C (16.0 F)	33 of 100 (Routine)
Oakdale	United States	Record low minimum temperature	-12.2 C (10.0 F)	33 of 100 (Routine)
Menno	United States	Record low minimum temperature	-9.4 C (15.1 F)	33 of 100 (Routine)
Diversion Dam	United States	Record high minimum temperature	9.4 C (48.9 F)	33 of 100 (Routine)
Lisboa Geofisica	Portugal	Record low maximum temperature	14.0 C (57.2 F)	32 of 100 (Routine)
Warrensburg 4NW	United States	Record low maximum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
Atkinson 3SW	United States	Record low minimum temperature	-10.0 C (14.0 F)	32 of 100 (Routine)
Loup City	United States	Record low minimum temperature	-10.0 C (14.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

852 records

Records set or tied on 21 October 1987 by type: Highest daily maximum 83, Lowest daily maximum 242, Highest daily minimum 73, Lowest daily minimum 253, Heaviest daily rainfall 161, Heaviest daily snowfall 28, Deepest snow cover 12.

Records on 21 October 1987 by type
Record type	Records
Highest daily maximum	83
Lowest daily maximum	242
Highest daily minimum	73
Lowest daily minimum	253
Heaviest daily rainfall	161
Heaviest daily snowfall	28
Deepest snow cover	12

Records on 21 October 1987 by timescale: all-time 1, monthly 21, daily 830.

How Much Records Were Beaten By

668 broken records

Margins by which the 668 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 1987

Top 20 records on 21 October 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1987	Malin Head, IE	monthly rain	60.0 mm (2.4 in)	19.9 mm (0.8 in)	41 years	72 of 100 (Major)
21 October 1987	Cataract Dam, AU	daily rain	98.0 mm (3.9 in)	59.9 mm (2.4 in)	76 years	69 of 100 (Major)
21 October 1987	Armagh, GB	daily rain	52.1 mm (2.1 in)	23.7 mm (0.9 in)	65 years	69 of 100 (Major)
21 October 1987	Metzingen, DE	daily rain	37.9 mm (1.5 in)	29.9 mm (1.2 in)	28 years	52 of 100 (Notable)
21 October 1987	Reutlingen-Betzingen, DE	daily rain	29.6 mm (1.2 in)	21.9 mm (0.9 in)	28 years	52 of 100 (Notable)
21 October 1987	Ballyshannon (Cathleens Fall), IE	daily rain	40.2 mm (1.6 in)	21.5 mm (0.8 in)	37 years	51 of 100 (Notable)
21 October 1987	Stuttgart/Echterdingen, DE	daily rain	27.0 mm (1.1 in)	21.4 mm (0.8 in)	28 years	51 of 100 (Notable)
21 October 1987	Kamensk-Uralskij, RU	all-time rain	80.0 mm (3.1 in)	6.3 mm (0.25 in)	32 years	51 of 100 (Notable)
21 October 1987	Stuttgart-Stadt, DE	daily rain	27.0 mm (1.1 in)	11.0 mm (0.4 in)	64 years	50 of 100 (Notable)
21 October 1987	Appin Church St, AU	daily rain	58.9 mm (2.3 in)	26.9 mm (1.1 in)	76 years	49 of 100 (Notable)
21 October 1987	Nurtingen, DE	daily rain	35.9 mm (1.4 in)	22.5 mm (0.9 in)	28 years	46 of 100 (Notable)
21 October 1987	Menangle Jmai, AU	daily rain	36.6 mm (1.4 in)	8.4 mm (0.33 in)	88 years	44 of 100 (Notable)
21 October 1987	Uruapan (Smn), MX	monthly high min	18.9 C (66.0 F)	2.2 C (4.0 F)	62 years	42 of 100 (Notable)
21 October 1987	Sugar Camp, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	76 years	42 of 100 (Notable)
21 October 1987	Midland, US	daily low min	-12.8 C (9.0 F)	2.8 C (5.0 F)	91 years	41 of 100 (Notable)
21 October 1987	Berowra (Goodwyn Road), AU	daily rain	55.0 mm (2.2 in)	40.5 mm (1.6 in)	12 years	40 of 100 (Notable)
21 October 1987	Creighton, US	daily low min	-9.4 C (15.1 F)	2.7 C (4.9 F)	90 years	40 of 100 (Notable)
21 October 1987	Springview 2NW, US	daily low min	-9.4 C (15.1 F)	2.7 C (4.9 F)	88 years	40 of 100 (Notable)
21 October 1987	Mellen 4 NE, US	monthly snowfall	33.0 cm (13.0 in)	7.6 cm (3.0 in)	48 years	40 of 100 (Notable)
21 October 1987	Mellen 4 NE, US	monthly snow depth	33.0 cm (13.0 in)	5.1 cm (2.0 in)	59 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 1987

Records set or tied on this calendar date in each year from 1795 to 1987. 1987 had 852 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 1987-10-21: 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 2026-10-13 (13 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	629
20 to 40	29
40 to 60	7
60 to 80	2
80 to 100	0
100 to 120	1