Weather Records on 21 July 1986

791 weather records were set or tied worldwide on 21 July 1986. Highest significance: De Grey, AU.

Key Facts for 21 July 1986

On 21 July 1986, 791 weather records were set or tied at long-record stations worldwide.
294 were record highs and 288 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 30 monthly and 757 daily.
De Grey set a daily record precipitation of 25.0 mm (1.0 in) on 21 July 1986.
Across 159 earlier years (1794 to 2026) the same calendar date averaged 465 records.

Record Map

791 stations

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

Weather records on 21 July 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
De Grey	Australia	Record daily precipitation	25.0 mm (1.0 in)	65 of 100 (Major)
Arad	Romania	Record daily precipitation	36.4 mm (1.4 in)	60 of 100 (Major)
Dolgeville	United States	Record daily precipitation	104.1 mm (4.1 in)	60 of 100 (Major)
Muccan	Australia	Record daily precipitation	29.3 mm (1.2 in)	59 of 100 (Notable)
Cope Rch	United States	Record daily precipitation	80.0 mm (3.1 in)	52 of 100 (Notable)
Nara	Japan	Record daily precipitation	101.5 mm (4.0 in)	49 of 100 (Notable)
Montezuma Castle Nm	United States	Record daily precipitation	35.6 mm (1.4 in)	49 of 100 (Notable)
Matanuska Exp Farm	United States	Record daily precipitation	46.5 mm (1.8 in)	48 of 100 (Notable)
Yarrie	Australia	Record daily precipitation	26.0 mm (1.0 in)	47 of 100 (Notable)
Iron Mtn	United States	Record daily precipitation	33.0 mm (1.3 in)	47 of 100 (Notable)
Wupatki Nm	United States	Record daily precipitation	34.3 mm (1.4 in)	46 of 100 (Notable)
Brunswick	United States	Record high maximum temperature	41.1 C (106.0 F)	46 of 100 (Notable)
Biskra	Algeria	Record low minimum temperature	19.9 C (67.8 F)	45 of 100 (Notable)
Mount Olive	Australia	Record daily precipitation	25.0 mm (1.0 in)	45 of 100 (Notable)
Window Rock 4 SW	United States	Record daily precipitation	59.2 mm (2.3 in)	45 of 100 (Notable)
Palmer Job Corps	United States	Record daily precipitation	49.8 mm (2.0 in)	44 of 100 (Notable)
Ueno	Japan	Record daily precipitation	94.5 mm (3.7 in)	43 of 100 (Notable)
Niland	United States	Record daily precipitation	36.1 mm (1.4 in)	42 of 100 (Notable)
Robertsdale	United States	Record daily precipitation	100.3 mm (3.9 in)	41 of 100 (Notable)
Alpharetta 4 SSW	United States	Record high minimum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Marianna 2 S	United States	Record high maximum temperature	39.4 C (102.9 F)	40 of 100 (Notable)
Marion	United States	Record daily precipitation	65.0 mm (2.6 in)	40 of 100 (Notable)
Breckenridge	United States	Record daily precipitation	39.4 mm (1.6 in)	39 of 100 (Notable)
McKinley Park	United States	Record daily precipitation	40.9 mm (1.6 in)	38 of 100 (Notable)
Mulyie	Australia	Record daily precipitation	25.0 mm (1.0 in)	37 of 100 (Notable)
Ukmerge	Lithuania	Record daily precipitation	32.9 mm (1.3 in)	37 of 100 (Notable)
Chandler Heights	United States	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Batesville	United States	Record high maximum temperature	38.9 C (102.0 F)	37 of 100 (Notable)
Crystal Springs Exp STN	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Winslow AP	United States	Record low maximum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Polovinnoe	Russia	Record daily precipitation	48.6 mm (1.9 in)	36 of 100 (Notable)
Karesuando	Sweden	Record low minimum temperature	0.5 C (32.9 F)	36 of 100 (Notable)
Bright Angel Rs	United States	Record low maximum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Forsyth 6 NNW	United States	Record high maximum temperature	40.0 C (104.0 F)	36 of 100 (Notable)
Monticello	United States	Record high minimum temperature	25.6 C (78.1 F)	36 of 100 (Notable)
Quitman 2 NW	United States	Record high minimum temperature	24.4 C (75.9 F)	36 of 100 (Notable)
Plattsburgh AFB	United States	Record low maximum temperature	22.2 C (72.0 F)	36 of 100 (Notable)
Trenton Falls	United States	Record daily precipitation	69.3 mm (2.7 in)	36 of 100 (Notable)
Ajo	United States	Record low minimum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
State UNIV	United States	Record high minimum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Warren	United States	Record daily precipitation	41.7 mm (1.6 in)	35 of 100 (Notable)
Cheraw	United States	Record high minimum temperature	26.1 C (79.0 F)	35 of 100 (Notable)
Aneth Plt	United States	Record low maximum temperature	26.1 C (79.0 F)	35 of 100 (Notable)
Manavi	Australia	Record daily precipitation	28.2 mm (1.1 in)	34 of 100 (Routine)
Gospic	Croatia	Record low maximum temperature	16.4 C (61.5 F)	34 of 100 (Routine)
El Vado Dam	United States	Record low maximum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Flagstaff AP	United States	Record low maximum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Khust	Ukraine	Record daily precipitation	43.0 mm (1.7 in)	33 of 100 (Routine)
Alton	United States	Record low maximum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Drobeta Turnu Severin	Romania	Record daily precipitation	29.6 mm (1.2 in)	32 of 100 (Routine)
Cuthbert	United States	Record high minimum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Bloomfield 3 SE	United States	Record low maximum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Olenek	Russia	Record daily precipitation	31.2 mm (1.2 in)	31 of 100 (Routine)
Alpine	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Lake City	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Montezuma 2 NW	United States	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
Waycross 4 NE	United States	Record high maximum temperature	42.2 C (108.0 F)	31 of 100 (Routine)
Kingstree	United States	Record high maximum temperature	41.7 C (107.1 F)	31 of 100 (Routine)
Escalante	United States	Record low maximum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Willigulli North	Australia	Record daily precipitation	29.0 mm (1.1 in)	30 of 100 (Routine)

Counts by Type and Timescale

791 records

Records set or tied on 21 July 1986 by type: Highest daily maximum 167, Lowest daily maximum 156, Highest daily minimum 127, Lowest daily minimum 132, Heaviest daily rainfall 209.

Records on 21 July 1986 by type
Record type	Records
Highest daily maximum	167
Lowest daily maximum	156
Highest daily minimum	127
Lowest daily minimum	132
Heaviest daily rainfall	209
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 July 1986 by timescale: all-time 4, monthly 30, daily 757.

How Much Records Were Beaten By

585 broken records

Margins by which the 585 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.9. Ties are not counted.

Top 20 by Significance

21 July 1986

Top 20 records on 21 July 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 July 1986	De Grey, AU	daily rain	25.0 mm (1.0 in)	25.0 mm (1.0 in)	97 years	65 of 100 (Major)
21 July 1986	Arad, RO	daily rain	36.4 mm (1.4 in)	19.9 mm (0.8 in)	87 years	60 of 100 (Major)
21 July 1986	Dolgeville, US	daily rain	104.1 mm (4.1 in)	46.4 mm (1.8 in)	55 years	60 of 100 (Major)
21 July 1986	Muccan, AU	daily rain	29.3 mm (1.2 in)	29.3 mm (1.2 in)	87 years	59 of 100 (Notable)
21 July 1986	Cope Rch, US	daily rain	80.0 mm (3.1 in)	69.3 mm (2.7 in)	32 years	52 of 100 (Notable)
21 July 1986	Nara, JP	daily rain	101.5 mm (4.0 in)	80.9 mm (3.2 in)	20 years	49 of 100 (Notable)
21 July 1986	Montezuma Castle Nm, US	daily rain	35.6 mm (1.4 in)	25.9 mm (1.0 in)	37 years	49 of 100 (Notable)
21 July 1986	Matanuska Exp Farm, US	monthly rain	46.5 mm (1.8 in)	6.9 mm (0.27 in)	60 years	48 of 100 (Notable)
21 July 1986	Yarrie, AU	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	87 years	47 of 100 (Notable)
21 July 1986	Iron Mtn, US	daily rain	33.0 mm (1.3 in)	24.1 mm (0.9 in)	7 years	47 of 100 (Notable)
21 July 1986	Wupatki Nm, US	daily rain	34.3 mm (1.4 in)	29.5 mm (1.2 in)	8 years	46 of 100 (Notable)
21 July 1986	Brunswick, US	all-time high max	41.1 C (106.0 F)	1.1 C (2.0 F)	44 years	46 of 100 (Notable)
21 July 1986	Biskra, DZ	daily low min	19.9 C (67.8 F)	2.1 C (3.8 F)	93 years	45 of 100 (Notable)
21 July 1986	Mount Olive, AU	daily rain	25.0 mm (1.0 in)	19.8 mm (0.8 in)	4 years	45 of 100 (Notable)
21 July 1986	Window Rock 4 SW, US	daily rain	59.2 mm (2.3 in)	57.4 mm (2.3 in)	1 year	45 of 100 (Notable)
21 July 1986	Palmer Job Corps, US	monthly rain	49.8 mm (2.0 in)	13.0 mm (0.5 in)	16 years	44 of 100 (Notable)
21 July 1986	Ueno, JP	daily rain	94.5 mm (3.7 in)	78.5 mm (3.1 in)	1 year	43 of 100 (Notable)
21 July 1986	Niland, US	daily rain	36.1 mm (1.4 in)	33.1 mm (1.3 in)	7 years	42 of 100 (Notable)
21 July 1986	Robertsdale, US	daily rain	100.3 mm (3.9 in)	29.2 mm (1.1 in)	72 years	41 of 100 (Notable)
21 July 1986	Alpharetta 4 SSW, US	daily high min	21.7 C (71.1 F)	1.7 C (3.1 F)	84 years	41 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

1794 to 1986

Records set or tied on this calendar date in each year from 1794 to 1986. 1986 had 791 records.

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

Records on 07-21 in each year
Year	Records
1794	1
1795	1
1796	1
1797	1
1813	2
1832	2
1837	1
1839	1
1843	1
1844	2
1854	1
1859	3
1865	3
1868	3
1872	1
1876	1
1879	2
1880	1
1881	1
1884	1
1885	1
1886	2
1888	2
1889	3
1890	2
1892	3
1893	3
1894	3
1895	1
1896	3
1897	4
1898	7
1899	2
1900	6
1901	13
1902	12
1903	10
1904	8
1905	13
1906	13
1907	12
1908	25
1909	18
1910	12
1911	37
1912	52
1913	41
1914	48
1915	81
1916	72
1917	136
1918	130
1919	51
1920	33
1921	55
1922	48
1923	132
1924	286
1925	202
1926	401
1927	191
1928	205
1929	360
1930	521
1931	549
1932	322
1933	208
1934	965
1935	236
1936	322
1937	253
1938	638
1939	415
1940	318
1941	226
1942	318
1943	253
1944	716
1945	300
1946	398
1947	795
1948	403
1949	603
1950	662
1951	427
1952	657
1953	351
1954	656
1955	582
1956	490
1957	447
1958	531
1959	940
1960	651
1961	388
1962	263
1963	470
1964	457
1965	748
1966	626
1967	313
1968	334
1969	636
1970	1,241
1971	475
1972	1,046
1973	871
1974	536
1975	380
1976	477
1977	708
1978	1,155
1979	964
1980	926
1981	1,352
1982	588
1983	1,234
1984	764
1985	554
1986	791
1987	1,025
1988	1,015
1989	973
1990	914
1991	812
1992	1,562
1993	866
1994	773
1995	1,247
1996	1,141
1997	849
1998	1,674
1999	814
2000	1,230
2001	889
2002	990
2003	1,250
2004	694
2005	1,420
2006	1,479
2007	1,145
2008	989
2009	1,306
2010	1,148
2011	1,414
2012	815
2013	526
2014	762
2015	704
2016	645
2017	433
2018	942
2019	755
2020	363
2021	574
2022	866
2023	816
2024	873
2025	881
2026	874

Download the Data

Data for records on 1986-07-21: 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	555
20 to 40	24
40 to 60	3
60 to 80	2
80 to 100	1