Weather Records on 21 June 2018

577 weather records were set or tied worldwide on 21 June 2018. Highest significance: Yankton 2 E, US.

Key Facts for 21 June 2018

On 21 June 2018, 577 weather records were set or tied at long-record stations worldwide.
236 were record highs and 80 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 20 monthly and 556 daily.
Yankton 2 E set a daily record precipitation of 75.2 mm (3.0 in) on 21 June 2018.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 430 records.

Record Map

577 stations

577 station records on 21 June 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yankton 2 E	United States	Record daily precipitation	75.2 mm (3.0 in)	63 of 100 (Major)
Vermillion 2 SE	United States	Record daily precipitation	116.8 mm (4.6 in)	61 of 100 (Major)
Le Claire L&D 14	United States	Record daily precipitation	87.6 mm (3.4 in)	60 of 100 (Major)
Marion	United States	Record daily precipitation	117.3 mm (4.6 in)	60 of 100 (Major)
Idjevan	Armenia	Record daily precipitation	99.1 mm (3.9 in)	58 of 100 (Notable)
Hawarden	United States	Record daily precipitation	90.7 mm (3.6 in)	58 of 100 (Notable)
Lake Park 3SSE	United States	Record daily precipitation	78.7 mm (3.1 in)	58 of 100 (Notable)
Dequeen	United States	Record daily precipitation	80.0 mm (3.1 in)	55 of 100 (Notable)
Chicago Midway AP 3SW	United States	Record daily precipitation	68.6 mm (2.7 in)	54 of 100 (Notable)
Rock Rapids	United States	Record daily precipitation	110.5 mm (4.4 in)	52 of 100 (Notable)
Centerville 6 SE	United States	Record daily precipitation	69.3 mm (2.7 in)	52 of 100 (Notable)
Rainier Paradise Rs	United States	Record daily precipitation	50.8 mm (2.0 in)	52 of 100 (Notable)
Uniontown 1 NE	United States	Record daily precipitation	60.5 mm (2.4 in)	51 of 100 (Notable)
Lovsta	Sweden	Record daily precipitation	51.0 mm (2.0 in)	50 of 100 (Notable)
Avesta	Sweden	Record daily precipitation	39.2 mm (1.5 in)	49 of 100 (Notable)
Dermott 3 NE	United States	Record daily precipitation	93.5 mm (3.7 in)	49 of 100 (Notable)
Algona	United States	Record daily precipitation	86.9 mm (3.4 in)	48 of 100 (Notable)
Windom	United States	Record daily precipitation	103.1 mm (4.1 in)	48 of 100 (Notable)
Canton	United States	Record daily precipitation	118.1 mm (4.6 in)	48 of 100 (Notable)
Mantsala Hirvihaara	Finland	Record daily precipitation	25.6 mm (1.0 in)	47 of 100 (Notable)
Sanborn	United States	Record daily precipitation	94.0 mm (3.7 in)	47 of 100 (Notable)
McCook	United States	Record daily precipitation	193.3 mm (7.6 in)	47 of 100 (Notable)
Columbus-Hap Cremean Wp	United States	Record daily precipitation	70.4 mm (2.8 in)	46 of 100 (Notable)
Alexandria	United States	Record daily precipitation	40.1 mm (1.6 in)	46 of 100 (Notable)
Kokomo 3 WSW	United States	Record daily precipitation	42.2 mm (1.7 in)	45 of 100 (Notable)
Steubenville	United States	Record daily precipitation	61.7 mm (2.4 in)	45 of 100 (Notable)
Coupeville 1 S	United States	Record high minimum temperature	13.9 C (57.0 F)	45 of 100 (Notable)
Kitamiesashi	Japan	Record daily precipitation	42.9 mm (1.7 in)	44 of 100 (Notable)
Confluence 1 SW Dam	United States	Record daily precipitation	92.7 mm (3.6 in)	44 of 100 (Notable)
Alexandria	United States	Record low maximum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Woodstock 2 NE	United States	Record daily precipitation	40.6 mm (1.6 in)	44 of 100 (Notable)
Clayton 1 SSW	United States	Record high minimum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Coffeeville	United States	Record daily precipitation	52.8 mm (2.1 in)	43 of 100 (Notable)
Pontotoc	United States	Record daily precipitation	50.0 mm (2.0 in)	43 of 100 (Notable)
Pt Comfort	United States	Record daily precipitation	120.9 mm (4.8 in)	43 of 100 (Notable)
Haines AP	United States	Record high minimum temperature	13.9 C (57.0 F)	43 of 100 (Notable)
Keokuk L&D 19	United States	Record daily precipitation	46.0 mm (1.8 in)	42 of 100 (Notable)
Wakefield 3NW	United States	Record low maximum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Idabel	United States	Record low maximum temperature	25.6 C (78.1 F)	42 of 100 (Notable)
Canton	United States	Record low maximum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Atlanta	United States	Record daily precipitation	77.7 mm (3.1 in)	42 of 100 (Notable)
Narpio Alamarkku	Finland	Record daily precipitation	35.0 mm (1.4 in)	41 of 100 (Notable)
Telluride 4WNW	United States	Record high minimum temperature	9.4 C (48.9 F)	41 of 100 (Notable)
Sheldon	United States	Record daily precipitation	99.1 mm (3.9 in)	41 of 100 (Notable)
Moorhead	United States	Record daily precipitation	60.7 mm (2.4 in)	41 of 100 (Notable)
Wakefield 3NW	United States	Record daily precipitation	41.9 mm (1.6 in)	41 of 100 (Notable)
Elizabeth City	United States	Record daily precipitation	32.8 mm (1.3 in)	41 of 100 (Notable)
Hendersonville 1 NE	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Centerville 6 SE	United States	Record low maximum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Winner	United States	Record low maximum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Everett	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Milford 4 NW	United States	Record low maximum temperature	18.3 C (64.9 F)	40 of 100 (Notable)
Meyersdale 2 SSW	United States	Record daily precipitation	58.9 mm (2.3 in)	40 of 100 (Notable)
Port Mansfield	United States	Record daily precipitation	93.5 mm (3.7 in)	40 of 100 (Notable)
Eskilstuna	Sweden	Record daily precipitation	26.0 mm (1.0 in)	39 of 100 (Notable)
Sioux Ctr 2 SE	United States	Record daily precipitation	68.1 mm (2.7 in)	39 of 100 (Notable)
Salina 3 W	United States	Record daily precipitation	84.1 mm (3.3 in)	39 of 100 (Notable)
Ashdown 4 SSE	United States	Record daily precipitation	58.4 mm (2.3 in)	38 of 100 (Notable)
Cairo 1SW	United States	Record high minimum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Lake Wilson	United States	Record daily precipitation	94.0 mm (3.7 in)	38 of 100 (Notable)

Counts by Type and Timescale

577 records

Records set or tied on 21 June 2018 by type: Highest daily maximum 46, Lowest daily maximum 65, Highest daily minimum 190, Lowest daily minimum 15, Heaviest daily rainfall 261.

Records on 21 June 2018 by type
Record type	Records
Highest daily maximum	46
Lowest daily maximum	65
Highest daily minimum	190
Lowest daily minimum	15
Heaviest daily rainfall	261
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 June 2018 by timescale: all-time 1, monthly 20, daily 556.

How Much Records Were Beaten By

452 broken records

Margins by which the 452 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 134.8. Ties are not counted.

Top 20 by Significance

21 June 2018

Top 20 records on 21 June 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 2018	Yankton 2 E, US	daily rain	75.2 mm (3.0 in)	50.6 mm (2.0 in)	69 years	63 of 100 (Major)
21 June 2018	Vermillion 2 SE, US	monthly rain	116.8 mm (4.6 in)	28.7 mm (1.1 in)	65 years	61 of 100 (Major)
21 June 2018	Le Claire L&D 14, US	daily rain	87.6 mm (3.4 in)	49.0 mm (1.9 in)	65 years	60 of 100 (Major)
21 June 2018	Marion, US	monthly rain	117.3 mm (4.6 in)	14.9 mm (0.6 in)	112 years	60 of 100 (Major)
21 June 2018	Idjevan, AM	daily rain	99.1 mm (3.9 in)	78.2 mm (3.1 in)	32 years	58 of 100 (Notable)
21 June 2018	Hawarden, US	daily rain	90.7 mm (3.6 in)	41.9 mm (1.6 in)	76 years	58 of 100 (Notable)
21 June 2018	Lake Park 3SSE, US	daily rain	78.7 mm (3.1 in)	39.3 mm (1.5 in)	76 years	58 of 100 (Notable)
21 June 2018	Dequeen, US	daily rain	80.0 mm (3.1 in)	41.4 mm (1.6 in)	68 years	55 of 100 (Notable)
21 June 2018	Chicago Midway AP 3SW, US	daily rain	68.6 mm (2.7 in)	29.7 mm (1.2 in)	80 years	54 of 100 (Notable)
21 June 2018	Rock Rapids, US	daily rain	110.5 mm (4.4 in)	67.3 mm (2.6 in)	7 years	52 of 100 (Notable)
21 June 2018	Centerville 6 SE, US	daily rain	69.3 mm (2.7 in)	18.0 mm (0.7 in)	108 years	52 of 100 (Notable)
21 June 2018	Rainier Paradise Rs, US	daily rain	50.8 mm (2.0 in)	24.9 mm (1.0 in)	51 years	52 of 100 (Notable)
21 June 2018	Uniontown 1 NE, US	daily rain	60.5 mm (2.4 in)	23.7 mm (0.9 in)	72 years	51 of 100 (Notable)
21 June 2018	Lovsta, SE	daily rain	51.0 mm (2.0 in)	32.0 mm (1.3 in)	12 years	50 of 100 (Notable)
21 June 2018	Avesta, SE	daily rain	39.2 mm (1.5 in)	22.5 mm (0.9 in)	33 years	49 of 100 (Notable)
21 June 2018	Dermott 3 NE, US	daily rain	93.5 mm (3.7 in)	61.7 mm (2.4 in)	39 years	49 of 100 (Notable)
21 June 2018	Algona, US	daily rain	86.9 mm (3.4 in)	43.5 mm (1.7 in)	35 years	48 of 100 (Notable)
21 June 2018	Windom, US	monthly rain	103.1 mm (4.1 in)	24.1 mm (0.9 in)	35 years	48 of 100 (Notable)
21 June 2018	Canton, US	daily rain	118.1 mm (4.6 in)	58.9 mm (2.3 in)	7 years	48 of 100 (Notable)
21 June 2018	Mantsala Hirvihaara, FI	daily rain	25.6 mm (1.0 in)	18.0 mm (0.7 in)	45 years	47 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

1802 to 2018

Records set or tied on this calendar date in each year from 1802 to 2018. 2018 had 577 records.

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

Records on 06-21 in each year
Year	Records
1802	1
1803	2
1805	1
1814	1
1821	3
1828	1
1831	1
1839	2
1846	1
1853	1
1855	1
1861	3
1865	1
1868	1
1869	4
1870	3
1871	1
1873	1
1874	1
1875	2
1879	1
1880	1
1881	1
1882	1
1883	1
1884	2
1885	1
1886	3
1887	1
1888	3
1889	1
1891	1
1892	2
1893	7
1895	6
1896	3
1897	3
1898	6
1899	6
1900	6
1901	5
1902	20
1903	15
1904	7
1905	14
1906	19
1907	15
1908	20
1909	19
1910	36
1911	12
1912	14
1913	34
1914	24
1915	40
1916	80
1917	97
1918	77
1919	32
1920	42
1921	85
1922	43
1923	229
1924	124
1925	333
1926	162
1927	146
1928	139
1929	84
1930	177
1931	340
1932	180
1933	645
1934	223
1935	247
1936	642
1937	475
1938	396
1939	250
1940	674
1941	401
1942	340
1943	439
1944	426
1945	709
1946	386
1947	637
1948	392
1949	391
1950	329
1951	347
1952	502
1953	761
1954	501
1955	271
1956	534
1957	932
1958	627
1959	356
1960	471
1961	956
1962	176
1963	667
1964	458
1965	400
1966	467
1967	789
1968	654
1969	687
1970	614
1971	394
1972	934
1973	683
1974	598
1975	996
1976	746
1977	476
1978	368
1979	857
1980	677
1981	889
1982	658
1983	752
1984	913
1985	516
1986	601
1987	940
1988	1,834
1989	856
1990	847
1991	1,067
1992	1,679
1993	939
1994	777
1995	978
1996	1,075
1997	1,037
1998	1,746
1999	994
2000	1,212
2001	658
2002	828
2003	1,034
2004	697
2005	1,090
2006	774
2007	1,085
2008	580
2009	1,060
2010	852
2011	1,340
2012	1,151
2013	571
2014	434
2015	707
2016	877
2017	954
2018	577
2019	969
2020	519
2021	1,132
2022	774
2023	987
2024	679
2025	1,536
2026	736

Download the Data

Data for records on 2018-06-21: 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 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Margin	Records
0 to 20	400
20 to 40	35
40 to 60	12
60 to 80	3
80 to 100	1
100 to 120	0
120 to 140	1