Weather Records on 21 June 1988

1,834 weather records were set or tied worldwide on 21 June 1988. Highest significance: Woodfords, US.

Key Facts for 21 June 1988

On 21 June 1988, 1,834 weather records were set or tied at long-record stations worldwide.
1,611 were record highs and 92 were record lows, counting maximum and minimum temperature.
By timescale, 33 were all-time records, 140 monthly and 1,661 daily.
Woodfords set a daily record precipitation of 29.7 mm (1.2 in) on 21 June 1988.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 423 records.

Record Map

1,834 stations

1,834 station records on 21 June 1988 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1988: highest significance records shown on the map
Station	Country	Type	Value	Significance
Woodfords	United States	Record daily precipitation	29.7 mm (1.2 in)	59 of 100 (Notable)
Albion	United States	Record high minimum temperature	28.9 C (84.0 F)	56 of 100 (Notable)
Mason City	United States	Record high minimum temperature	28.3 C (82.9 F)	55 of 100 (Notable)
Dodgeville Wwtp	United States	Record high maximum temperature	37.8 C (100.0 F)	49 of 100 (Notable)
Ft Meade	United States	Record high minimum temperature	26.7 C (80.1 F)	47 of 100 (Notable)
Cresco 1 NE	United States	Record high maximum temperature	37.8 C (100.0 F)	46 of 100 (Notable)
Elkader 6 SSW	United States	Record high maximum temperature	39.4 C (102.9 F)	46 of 100 (Notable)
Ludington 4 SE	United States	Record high maximum temperature	35.6 C (96.1 F)	46 of 100 (Notable)
Leola	United States	Record high maximum temperature	40.0 C (104.0 F)	46 of 100 (Notable)
Wibaux 2 E	United States	Record high maximum temperature	39.4 C (102.9 F)	45 of 100 (Notable)
Aberdeen	United States	Record high maximum temperature	42.2 C (108.0 F)	45 of 100 (Notable)
Tiskilwa 2 SE	United States	Record high maximum temperature	37.2 C (99.0 F)	44 of 100 (Notable)
Alexandria	United States	Record high maximum temperature	41.7 C (107.1 F)	44 of 100 (Notable)
Port Washington	United States	Record high maximum temperature	38.9 C (102.0 F)	44 of 100 (Notable)
Prairie du Chien	United States	Record high maximum temperature	38.9 C (102.0 F)	44 of 100 (Notable)
Ludlow 3 SSE	United States	Record high minimum temperature	25.6 C (78.1 F)	43 of 100 (Notable)
Cedar Rapids #1	United States	Record high minimum temperature	25.6 C (78.1 F)	42 of 100 (Notable)
Osceola	United States	Record high maximum temperature	38.3 C (100.9 F)	42 of 100 (Notable)
Dickinson Exp STN	United States	Record high maximum temperature	40.6 C (105.1 F)	41 of 100 (Notable)
Faulkton	United States	Record high minimum temperature	25.6 C (78.1 F)	41 of 100 (Notable)
Cape Nelson Lighthouse Compari	Australia	Record daily precipitation	39.0 mm (1.5 in)	40 of 100 (Notable)
Karlshamn	Sweden	Record daily precipitation	28.2 mm (1.1 in)	40 of 100 (Notable)
Cedar Rapids #1	United States	Record high maximum temperature	37.8 C (100.0 F)	40 of 100 (Notable)
Lamoni	United States	Record high maximum temperature	38.9 C (102.0 F)	40 of 100 (Notable)
Ekalaka	United States	Record high maximum temperature	40.0 C (104.0 F)	40 of 100 (Notable)
Willow City	United States	Record high maximum temperature	37.8 C (100.0 F)	40 of 100 (Notable)
Forestburg 4 NNE	United States	Record high maximum temperature	43.3 C (109.9 F)	40 of 100 (Notable)
Rinconada	Mexico	Record low minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Aurora Water	United States	Record high maximum temperature	38.3 C (100.9 F)	39 of 100 (Notable)
Belle Plaine	United States	Record high maximum temperature	38.9 C (102.0 F)	39 of 100 (Notable)
Denton 2 E	United States	Record high minimum temperature	25.6 C (78.1 F)	39 of 100 (Notable)
Evart	United States	Record high maximum temperature	36.1 C (97.0 F)	39 of 100 (Notable)
New Ulm 2 SE	United States	Record high minimum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Grant City	United States	Record high maximum temperature	39.4 C (102.9 F)	39 of 100 (Notable)
Amidon	United States	Record high minimum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Dickinson Exp STN	United States	Record high minimum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Wentworth 2.5 WNW	United States	Record high maximum temperature	40.0 C (104.0 F)	39 of 100 (Notable)
Baraboo Wwtp	United States	Record high maximum temperature	38.9 C (102.0 F)	39 of 100 (Notable)
Lake Mills Wwtp	United States	Record high maximum temperature	39.4 C (102.9 F)	39 of 100 (Notable)
Basin	United States	Record high minimum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Gladwin	United States	Record high maximum temperature	36.7 C (98.1 F)	39 of 100 (Notable)
Sioux City AP	United States	Record high maximum temperature	42.2 C (108.0 F)	39 of 100 (Notable)
Atzalan	Mexico	Record daily precipitation	144.8 mm (5.7 in)	38 of 100 (Notable)
Morrison	United States	Record high maximum temperature	38.9 C (102.0 F)	38 of 100 (Notable)
Guthrie Ctr	United States	Record high maximum temperature	38.3 C (100.9 F)	38 of 100 (Notable)
Rock Rapids	United States	Record high maximum temperature	41.1 C (106.0 F)	38 of 100 (Notable)
Sigourney	United States	Record high maximum temperature	38.9 C (102.0 F)	38 of 100 (Notable)
Washington	United States	Record high maximum temperature	38.3 C (100.9 F)	38 of 100 (Notable)
Albert Lea 3SE	United States	Record high minimum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Princeton	United States	Record high maximum temperature	38.3 C (100.9 F)	38 of 100 (Notable)
Glendive	United States	Record high maximum temperature	42.8 C (109.0 F)	38 of 100 (Notable)
Jordan	United States	Record high minimum temperature	21.1 C (70.0 F)	38 of 100 (Notable)
Plevna	United States	Record high minimum temperature	24.4 C (75.9 F)	38 of 100 (Notable)
W Pt	United States	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
New England	United States	Record high maximum temperature	37.8 C (100.0 F)	38 of 100 (Notable)
Richardton Abbey	United States	Record high minimum temperature	23.3 C (73.9 F)	38 of 100 (Notable)
Ipswich	United States	Record high maximum temperature	41.1 C (106.0 F)	38 of 100 (Notable)
Vermillion 2 SE	United States	Record high maximum temperature	42.2 C (108.0 F)	38 of 100 (Notable)
Wessington Springs	United States	Record high maximum temperature	38.9 C (102.0 F)	38 of 100 (Notable)
Wessington Springs	United States	Record high minimum temperature	23.9 C (75.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

1,834 records

Records set or tied on 21 June 1988 by type: Highest daily maximum 966, Lowest daily maximum 41, Highest daily minimum 645, Lowest daily minimum 51, Heaviest daily rainfall 131.

Records on 21 June 1988 by type
Record type	Records
Highest daily maximum	966
Lowest daily maximum	41
Highest daily minimum	645
Lowest daily minimum	51
Heaviest daily rainfall	131
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 June 1988 by timescale: all-time 33, monthly 140, daily 1,661.

How Much Records Were Beaten By

1,396 broken records

Margins by which the 1,396 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 65.0. Ties are not counted.

Top 20 by Significance

21 June 1988

Top 20 records on 21 June 1988 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1988	Woodfords, US	daily rain	29.7 mm (1.2 in)	27.9 mm (1.1 in)	37 years	59 of 100 (Notable)
21 June 1988	Albion, US	all-time high min	28.9 C (84.0 F)	0.6 C (1.1 F)	86 years	56 of 100 (Notable)
21 June 1988	Mason City, US	all-time high min	28.3 C (82.9 F)	1.6 C (2.9 F)	76 years	55 of 100 (Notable)
21 June 1988	Dodgeville Wwtp, US	monthly high max	37.8 C (100.0 F)	1.7 C (3.1 F)	86 years	49 of 100 (Notable)
21 June 1988	Ft Meade, US	daily high min	26.7 C (80.1 F)	6.7 C (12.1 F)	78 years	47 of 100 (Notable)
21 June 1988	Cresco 1 NE, US	monthly high max	37.8 C (100.0 F)	0.6 C (1.1 F)	86 years	46 of 100 (Notable)
21 June 1988	Elkader 6 SSW, US	monthly high max	39.4 C (102.9 F)	0.5 C (0.9 F)	86 years	46 of 100 (Notable)
21 June 1988	Ludington 4 SE, US	monthly high max	35.6 C (96.1 F)	0.6 C (1.1 F)	86 years	46 of 100 (Notable)
21 June 1988	Leola, US	monthly high max	40.0 C (104.0 F)	1.1 C (2.0 F)	85 years	46 of 100 (Notable)
21 June 1988	Wibaux 2 E, US	daily high max	39.4 C (102.9 F)	5.5 C (9.9 F)	88 years	45 of 100 (Notable)
21 June 1988	Aberdeen, US	daily high max	42.2 C (108.0 F)	5.5 C (9.9 F)	88 years	45 of 100 (Notable)
21 June 1988	Tiskilwa 2 SE, US	daily high max	37.2 C (99.0 F)	3.3 C (5.9 F)	92 years	44 of 100 (Notable)
21 June 1988	Alexandria, US	daily high max	41.7 C (107.1 F)	3.9 C (7.0 F)	93 years	44 of 100 (Notable)
21 June 1988	Port Washington, US	monthly high max	38.9 C (102.0 F)	1.1 C (2.0 F)	76 years	44 of 100 (Notable)
21 June 1988	Prairie du Chien, US	daily high max	38.9 C (102.0 F)	3.3 C (5.9 F)	93 years	44 of 100 (Notable)
21 June 1988	Ludlow 3 SSE, US	daily high min	25.6 C (78.1 F)	7.3 C (13.1 F)	63 years	43 of 100 (Notable)
21 June 1988	Cedar Rapids #1, US	monthly high min	25.6 C (78.1 F)	0.6 C (1.1 F)	74 years	42 of 100 (Notable)
21 June 1988	Osceola, US	daily high max	38.3 C (100.9 F)	2.7 C (4.9 F)	91 years	42 of 100 (Notable)
21 June 1988	Dickinson Exp STN, US	daily high max	40.6 C (105.1 F)	3.4 C (6.1 F)	88 years	41 of 100 (Notable)
21 June 1988	Faulkton, US	daily high min	25.6 C (78.1 F)	3.9 C (7.0 F)	77 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

1802 to 1988

Records set or tied on this calendar date in each year from 1802 to 1988. 1988 had 1,834 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 1988-06-21: 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	1,375
10 to 20	12
20 to 30	7
30 to 40	1
40 to 50	0
50 to 60	0
60 to 70	1