Weather Records on 21 October 1986

814 weather records were set or tied worldwide on 21 October 1986. Highest significance: Uccle, BE.

Key Facts for 21 October 1986

On 21 October 1986, 814 weather records were set or tied at long-record stations worldwide.
97 were record highs and 141 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 804 daily.
Uccle set a daily record precipitation of 44.8 mm (1.8 in) on 21 October 1986.
Across 167 earlier years (1795 to 2025) the same calendar date averaged 417 records.

Record Map

814 stations

814 station records on 21 October 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 October 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Uccle	Belgium	Record daily precipitation	44.8 mm (1.8 in)	76 of 100 (Major)
Altastenberg	Germany	Record daily precipitation	49.4 mm (1.9 in)	63 of 100 (Major)
Schluchtern-Herolz	Germany	Record daily precipitation	35.2 mm (1.4 in)	59 of 100 (Notable)
Heemstede	Netherlands	Record daily precipitation	40.3 mm (1.6 in)	57 of 100 (Notable)
Kleve	Germany	Record daily precipitation	26.4 mm (1.0 in)	56 of 100 (Notable)
Holly	United States	Record daily precipitation	46.7 mm (1.8 in)	54 of 100 (Notable)
Geldern-Walbeck	Germany	Record daily precipitation	27.8 mm (1.1 in)	53 of 100 (Notable)
Amsterdam	Netherlands	Record daily precipitation	34.8 mm (1.4 in)	52 of 100 (Notable)
Michelstadt	Germany	Record daily precipitation	35.2 mm (1.4 in)	51 of 100 (Notable)
Valkenburg (L)	Netherlands	Record daily precipitation	34.7 mm (1.4 in)	51 of 100 (Notable)
Buchten	Netherlands	Record daily precipitation	30.1 mm (1.2 in)	51 of 100 (Notable)
Harderwijk	Netherlands	Record daily precipitation	33.5 mm (1.3 in)	51 of 100 (Notable)
Weert	Netherlands	Record daily precipitation	32.0 mm (1.3 in)	51 of 100 (Notable)
Eindhoven-1	Netherlands	Record daily precipitation	33.2 mm (1.3 in)	51 of 100 (Notable)
Dortmund	Germany	Record daily precipitation	25.5 mm (1.0 in)	50 of 100 (Notable)
Oosterhout	Netherlands	Record daily precipitation	27.1 mm (1.1 in)	50 of 100 (Notable)
Someren	Netherlands	Record daily precipitation	28.3 mm (1.1 in)	50 of 100 (Notable)
Ludenscheid (Zeppelin-Gymnasiu	Germany	Record daily precipitation	40.7 mm (1.6 in)	49 of 100 (Notable)
Bettborn-Pratz	Luxembourg	Record daily precipitation	29.8 mm (1.2 in)	49 of 100 (Notable)
Beesel	Netherlands	Record daily precipitation	27.1 mm (1.1 in)	49 of 100 (Notable)
Deurne	Netherlands	Record daily precipitation	28.1 mm (1.1 in)	49 of 100 (Notable)
Heibloem (L)	Netherlands	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Ijsselsteyn (L)	Netherlands	Record daily precipitation	30.7 mm (1.2 in)	49 of 100 (Notable)
Maarheeze	Netherlands	Record daily precipitation	26.6 mm (1.0 in)	49 of 100 (Notable)
Mill	Netherlands	Record daily precipitation	29.0 mm (1.1 in)	49 of 100 (Notable)
Schinnen	Netherlands	Record daily precipitation	33.2 mm (1.3 in)	49 of 100 (Notable)
Eberbach/Neckar	Germany	Record daily precipitation	37.5 mm (1.5 in)	48 of 100 (Notable)
Kall-Sistig	Germany	Record daily precipitation	29.7 mm (1.2 in)	48 of 100 (Notable)
Ludinghausen	Germany	Record daily precipitation	27.7 mm (1.1 in)	48 of 100 (Notable)
Esbeek	Netherlands	Record daily precipitation	29.3 mm (1.2 in)	48 of 100 (Notable)
Chaam	Netherlands	Record daily precipitation	32.3 mm (1.3 in)	48 of 100 (Notable)
Boxtel	Netherlands	Record daily precipitation	29.1 mm (1.1 in)	48 of 100 (Notable)
St Anthonis	Netherlands	Record daily precipitation	29.1 mm (1.1 in)	48 of 100 (Notable)
Heino_1	Netherlands	Record daily precipitation	27.3 mm (1.1 in)	48 of 100 (Notable)
Kenton	United States	Record daily precipitation	49.0 mm (1.9 in)	48 of 100 (Notable)
Corinda	Australia	Record daily precipitation	48.0 mm (1.9 in)	47 of 100 (Notable)
Lohr/Main-Steinbach	Germany	Record daily precipitation	39.0 mm (1.5 in)	47 of 100 (Notable)
Remscheid-Lennep	Germany	Record daily precipitation	44.8 mm (1.8 in)	47 of 100 (Notable)
Siegen (Klaranlage)	Germany	Record daily precipitation	45.2 mm (1.8 in)	47 of 100 (Notable)
Biedenkopf	Germany	Record daily precipitation	27.7 mm (1.1 in)	47 of 100 (Notable)
Bischbrunn	Germany	Record daily precipitation	45.2 mm (1.8 in)	47 of 100 (Notable)
Los Divisaderos	Mexico	Record daily precipitation	75.2 mm (3.0 in)	47 of 100 (Notable)
Sevenum	Netherlands	Record daily precipitation	28.5 mm (1.1 in)	47 of 100 (Notable)
Helmond	Netherlands	Record daily precipitation	25.9 mm (1.0 in)	47 of 100 (Notable)
Nieuwendijk (Nb)	Netherlands	Record daily precipitation	26.5 mm (1.0 in)	47 of 100 (Notable)
Stein (L)	Netherlands	Record daily precipitation	29.1 mm (1.1 in)	47 of 100 (Notable)
Engelskirchen	Germany	Record daily precipitation	39.7 mm (1.6 in)	46 of 100 (Notable)
Kronach	Germany	Record daily precipitation	26.3 mm (1.0 in)	46 of 100 (Notable)
Schellingwoude	Netherlands	Record daily precipitation	28.8 mm (1.1 in)	46 of 100 (Notable)
Scheveningen	Netherlands	Record daily precipitation	36.5 mm (1.4 in)	46 of 100 (Notable)
Megen	Netherlands	Record daily precipitation	34.6 mm (1.4 in)	46 of 100 (Notable)
Stramproy	Netherlands	Record daily precipitation	26.0 mm (1.0 in)	46 of 100 (Notable)
Gilze-Rijen_1	Netherlands	Record daily precipitation	30.0 mm (1.2 in)	46 of 100 (Notable)
Aschaffenburg	Germany	Record daily precipitation	26.0 mm (1.0 in)	45 of 100 (Notable)
Beerfelden	Germany	Record daily precipitation	42.9 mm (1.7 in)	45 of 100 (Notable)
Capelle (Nb)	Netherlands	Record daily precipitation	26.4 mm (1.0 in)	45 of 100 (Notable)
Ginneken	Netherlands	Record daily precipitation	30.5 mm (1.2 in)	45 of 100 (Notable)
Herwen	Netherlands	Record daily precipitation	28.7 mm (1.1 in)	45 of 100 (Notable)
Strijen	Netherlands	Record daily precipitation	25.7 mm (1.0 in)	45 of 100 (Notable)
Tilburg	Netherlands	Record daily precipitation	30.2 mm (1.2 in)	45 of 100 (Notable)

Counts by Type and Timescale

814 records

Records set or tied on 21 October 1986 by type: Highest daily maximum 43, Lowest daily maximum 69, Highest daily minimum 54, Lowest daily minimum 72, Heaviest daily rainfall 572, Heaviest daily snowfall 3, Deepest snow cover 1.

Records on 21 October 1986 by type
Record type	Records
Highest daily maximum	43
Lowest daily maximum	69
Highest daily minimum	54
Lowest daily minimum	72
Heaviest daily rainfall	572
Heaviest daily snowfall	3
Deepest snow cover	1

Records on 21 October 1986 by timescale: all-time 0, monthly 10, daily 804.

How Much Records Were Beaten By

729 broken records

Margins by which the 729 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 October 1986

Top 20 records on 21 October 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 October 1986	Uccle, BE	daily rain	44.8 mm (1.8 in)	23.2 mm (0.9 in)	89 years	76 of 100 (Major)
21 October 1986	Altastenberg, DE	daily rain	49.4 mm (1.9 in)	27.8 mm (1.1 in)	49 years	63 of 100 (Major)
21 October 1986	Schluchtern-Herolz, DE	daily rain	35.2 mm (1.4 in)	27.9 mm (1.1 in)	49 years	59 of 100 (Notable)
21 October 1986	Heemstede, NL	daily rain	40.3 mm (1.6 in)	25.6 mm (1.0 in)	44 years	57 of 100 (Notable)
21 October 1986	Kleve, DE	daily rain	26.4 mm (1.0 in)	15.3 mm (0.6 in)	61 years	56 of 100 (Notable)
21 October 1986	Holly, US	daily rain	46.7 mm (1.8 in)	30.4 mm (1.2 in)	55 years	54 of 100 (Notable)
21 October 1986	Geldern-Walbeck, DE	daily rain	27.8 mm (1.1 in)	16.6 mm (0.7 in)	36 years	53 of 100 (Notable)
21 October 1986	Amsterdam, NL	daily rain	34.8 mm (1.4 in)	20.3 mm (0.8 in)	53 years	52 of 100 (Notable)
21 October 1986	Michelstadt, DE	daily rain	35.2 mm (1.4 in)	29.5 mm (1.2 in)	28 years	51 of 100 (Notable)
21 October 1986	Valkenburg (L), NL	daily rain	34.7 mm (1.4 in)	22.5 mm (0.9 in)	27 years	51 of 100 (Notable)
21 October 1986	Buchten, NL	daily rain	30.1 mm (1.2 in)	22.7 mm (0.9 in)	27 years	51 of 100 (Notable)
21 October 1986	Harderwijk, NL	daily rain	33.5 mm (1.3 in)	25.5 mm (1.0 in)	28 years	51 of 100 (Notable)
21 October 1986	Weert, NL	daily rain	32.0 mm (1.3 in)	23.9 mm (0.9 in)	27 years	51 of 100 (Notable)
21 October 1986	Eindhoven-1, NL	daily rain	33.2 mm (1.3 in)	24.2 mm (1.0 in)	27 years	51 of 100 (Notable)
21 October 1986	Dortmund, DE	daily rain	25.5 mm (1.0 in)	16.8 mm (0.7 in)	44 years	50 of 100 (Notable)
21 October 1986	Oosterhout, NL	daily rain	27.1 mm (1.1 in)	21.0 mm (0.8 in)	31 years	50 of 100 (Notable)
21 October 1986	Someren, NL	daily rain	28.3 mm (1.1 in)	19.4 mm (0.8 in)	27 years	50 of 100 (Notable)
21 October 1986	Ludenscheid (Zeppelin-Gymnasiu, DE	daily rain	40.7 mm (1.6 in)	24.9 mm (1.0 in)	28 years	49 of 100 (Notable)
21 October 1986	Bettborn-Pratz, LU	daily rain	29.8 mm (1.2 in)	20.3 mm (0.8 in)	31 years	49 of 100 (Notable)
21 October 1986	Beesel, NL	daily rain	27.1 mm (1.1 in)	18.0 mm (0.7 in)	27 years	49 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 1986

Records set or tied on this calendar date in each year from 1795 to 1986. 1986 had 814 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 1986-10-21: 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	663
20 to 40	59
40 to 60	4
60 to 80	2
80 to 100	1