Weather Records on 21 June 2017

954 weather records were set or tied worldwide on 21 June 2017. Highest significance: Biloxi, US.

Key Facts for 21 June 2017

On 21 June 2017, 954 weather records were set or tied at long-record stations worldwide.
753 were record highs and 103 were record lows, counting maximum and minimum temperature.
By timescale, 9 were all-time records, 48 monthly and 897 daily.
Biloxi set a daily record precipitation of 168.4 mm (6.6 in) on 21 June 2017.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 428 records.

Record Map

954 stations

954 station records on 21 June 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Biloxi	United States	Record daily precipitation	168.4 mm (6.6 in)	80 of 100 (Exceptional)
Szeged	Hungary	Record daily precipitation	47.4 mm (1.9 in)	70 of 100 (Major)
Picayune	United States	Record daily precipitation	106.7 mm (4.2 in)	63 of 100 (Major)
Sisian	Armenia	Record daily precipitation	99.6 mm (3.9 in)	57 of 100 (Notable)
Wewahitchka	United States	Record daily precipitation	124.5 mm (4.9 in)	57 of 100 (Notable)
Tonopah	United States	Record high maximum temperature	39.4 C (102.9 F)	56 of 100 (Notable)
Los Gatos	United States	Record low minimum temperature	2.2 C (36.0 F)	54 of 100 (Notable)
Saucier Exp Forest	United States	Record daily precipitation	125.5 mm (4.9 in)	51 of 100 (Notable)
Brownsville	United States	Record high maximum temperature	38.9 C (102.0 F)	51 of 100 (Notable)
Phila 1 WSW	United States	Record daily precipitation	70.6 mm (2.8 in)	50 of 100 (Notable)
Purvis 2N	United States	Record daily precipitation	69.3 mm (2.7 in)	48 of 100 (Notable)
Yerington	United States	Record high maximum temperature	40.6 C (105.1 F)	48 of 100 (Notable)
Dublin Phoenix Park	Ireland	Record high maximum temperature	28.6 C (83.5 F)	47 of 100 (Notable)
Buckatunna 1 NE	United States	Record daily precipitation	71.4 mm (2.8 in)	47 of 100 (Notable)
Irako	Japan	Record daily precipitation	134.9 mm (5.3 in)	46 of 100 (Notable)
Lhasa	China	Record daily precipitation	49.5 mm (1.9 in)	45 of 100 (Notable)
Slidell	United States	Record daily precipitation	91.4 mm (3.6 in)	45 of 100 (Notable)
Olenja Rechka	Russia	Record high minimum temperature	16.6 C (61.9 F)	44 of 100 (Notable)
Fairhope 2 NE	United States	Record low maximum temperature	23.9 C (75.0 F)	44 of 100 (Notable)
Fairhope 2 NE	United States	Record daily precipitation	82.6 mm (3.3 in)	44 of 100 (Notable)
Wetumpka	United States	Record low maximum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Batesburg	United States	Record low maximum temperature	25.0 C (77.0 F)	44 of 100 (Notable)
Kremsmuenster	Austria	Record high minimum temperature	20.5 C (68.9 F)	43 of 100 (Notable)
Hissar	India	Record daily precipitation	32.0 mm (1.3 in)	43 of 100 (Notable)
Valley	United Kingdom	Record high minimum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Robertsdale	United States	Record daily precipitation	111.5 mm (4.4 in)	43 of 100 (Notable)
Ajo	United States	Record high maximum temperature	47.8 C (118.0 F)	43 of 100 (Notable)
Waynesboro 2 W	United States	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Winnemucca AP	United States	Record high minimum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
Little Grove	Australia	Record daily precipitation	41.2 mm (1.6 in)	42 of 100 (Notable)
Sambalpur	India	Record daily precipitation	83.1 mm (3.3 in)	42 of 100 (Notable)
Mecca Fire STN	United States	Record high minimum temperature	28.9 C (84.0 F)	42 of 100 (Notable)
Tejon Rancho	United States	Record high minimum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
Cuthbert	United States	Record low maximum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Jeanerette 5 NW	United States	Record daily precipitation	40.4 mm (1.6 in)	42 of 100 (Notable)
Abbeville	France	Record high maximum temperature	34.9 C (94.8 F)	41 of 100 (Notable)
Lille-Lesquin	France	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Owase	Japan	Record daily precipitation	221.0 mm (8.7 in)	41 of 100 (Notable)
Andalusia 3 W	United States	Record daily precipitation	106.7 mm (4.2 in)	41 of 100 (Notable)
San Carlos Rsvr	United States	Record high maximum temperature	45.0 C (113.0 F)	41 of 100 (Notable)
Hattiesburg 5SW	United States	Record daily precipitation	64.0 mm (2.5 in)	41 of 100 (Notable)
Sunnyside - Lund 31S	United States	Record high maximum temperature	37.2 C (99.0 F)	41 of 100 (Notable)
Ely AP	United States	Record high maximum temperature	35.6 C (96.1 F)	41 of 100 (Notable)
Pte de la Hague	France	Record high minimum temperature	16.0 C (60.8 F)	40 of 100 (Notable)
West Souburg	Netherlands	Record high maximum temperature	30.2 C (86.4 F)	40 of 100 (Notable)
Willcox	United States	Record high minimum temperature	22.2 C (72.0 F)	40 of 100 (Notable)
Orland	United States	Record high minimum temperature	27.2 C (81.0 F)	40 of 100 (Notable)
Glennville 3NW	United States	Record low maximum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
Abbeville	France	Record high minimum temperature	18.4 C (65.1 F)	39 of 100 (Notable)
Orly	France	Record high maximum temperature	37.1 C (98.8 F)	39 of 100 (Notable)
Erbogacen	Russia	Record high maximum temperature	38.8 C (101.8 F)	39 of 100 (Notable)
Brundidge	United States	Record daily precipitation	86.4 mm (3.4 in)	39 of 100 (Notable)
Canyon Dam	United States	Record high maximum temperature	35.0 C (95.0 F)	39 of 100 (Notable)
Castle Rock	United States	Record high minimum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Ft Lauderdale	United States	Record high minimum temperature	27.2 C (81.0 F)	39 of 100 (Notable)
Tonopah	United States	Record high minimum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Darlington	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Lodejnoe Pole	Russia	Record daily precipitation	48.0 mm (1.9 in)	38 of 100 (Notable)
Jersey: Airport	United Kingdom	Record high minimum temperature	18.7 C (65.7 F)	38 of 100 (Notable)
Perry	United States	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

954 records

Records set or tied on 21 June 2017 by type: Highest daily maximum 364, Lowest daily maximum 74, Highest daily minimum 389, Lowest daily minimum 29, Heaviest daily rainfall 98.

Records on 21 June 2017 by type
Record type	Records
Highest daily maximum	364
Lowest daily maximum	74
Highest daily minimum	389
Lowest daily minimum	29
Heaviest daily rainfall	98
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 June 2017 by timescale: all-time 9, monthly 48, daily 897.

How Much Records Were Beaten By

734 broken records

Margins by which the 734 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 144.0. Ties are not counted.

Top 20 by Significance

21 June 2017

Top 20 records on 21 June 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 2017	Biloxi, US	daily rain	168.4 mm (6.6 in)	91.2 mm (3.6 in)	106 years	80 of 100 (Exceptional)
21 June 2017	Szeged, HU	daily rain	47.4 mm (1.9 in)	25.5 mm (1.0 in)	114 years	70 of 100 (Major)
21 June 2017	Picayune, US	daily rain	106.7 mm (4.2 in)	73.9 mm (2.9 in)	54 years	63 of 100 (Major)
21 June 2017	Sisian, AM	daily rain	99.6 mm (3.9 in)	74.6 mm (2.9 in)	31 years	57 of 100 (Notable)
21 June 2017	Wewahitchka, US	daily rain	124.5 mm (4.9 in)	73.7 mm (2.9 in)	34 years	57 of 100 (Notable)
21 June 2017	Tonopah, US	all-time high max	39.4 C (102.9 F)	2.2 C (4.0 F)	74 years	56 of 100 (Notable)
21 June 2017	Los Gatos, US	daily low min	2.2 C (36.0 F)	3.9 C (7.0 F)	108 years	54 of 100 (Notable)
21 June 2017	Saucier Exp Forest, US	daily rain	125.5 mm (4.9 in)	74.2 mm (2.9 in)	19 years	51 of 100 (Notable)
21 June 2017	Brownsville, US	daily high max	38.9 C (102.0 F)	2.2 C (4.0 F)	116 years	51 of 100 (Notable)
21 June 2017	Phila 1 WSW, US	daily rain	70.6 mm (2.8 in)	49.0 mm (1.9 in)	31 years	50 of 100 (Notable)
21 June 2017	Purvis 2N, US	daily rain	69.3 mm (2.7 in)	37.3 mm (1.5 in)	67 years	48 of 100 (Notable)
21 June 2017	Yerington, US	monthly high max	40.6 C (105.1 F)	1.7 C (3.1 F)	84 years	48 of 100 (Notable)
21 June 2017	Dublin Phoenix Park, IE	daily high max	28.6 C (83.5 F)	2.0 C (3.6 F)	143 years	47 of 100 (Notable)
21 June 2017	Buckatunna 1 NE, US	daily rain	71.4 mm (2.8 in)	28.0 mm (1.1 in)	74 years	47 of 100 (Notable)
21 June 2017	Irako, JP	monthly rain	134.9 mm (5.3 in)	21.3 mm (0.8 in)	63 years	46 of 100 (Notable)
21 June 2017	Lhasa, CN	monthly rain	49.5 mm (1.9 in)	11.2 mm (0.4 in)	36 years	45 of 100 (Notable)
21 June 2017	Slidell, US	daily rain	91.4 mm (3.6 in)	64.7 mm (2.5 in)	15 years	45 of 100 (Notable)
21 June 2017	Olenja Rechka, RU	monthly high min	16.6 C (61.9 F)	0.2 C (0.4 F)	86 years	44 of 100 (Notable)
21 June 2017	Fairhope 2 NE, US	daily low max	23.9 C (75.0 F)	2.8 C (5.0 F)	75 years	44 of 100 (Notable)
21 June 2017	Fairhope 2 NE, US	daily rain	82.6 mm (3.3 in)	41.2 mm (1.6 in)	48 years	44 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 2017

Records set or tied on this calendar date in each year from 1802 to 2017. 2017 had 954 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 2017-06-21: 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	698
20 to 40	20
40 to 60	8
60 to 80	6
80 to 100	1
100 to 120	0
120 to 140	0
140 to 160	1