Weather Records on 21 June 1939

250 weather records were set or tied worldwide on 21 June 1939. Highest significance: Tulia 6 NE, US.

Key Facts for 21 June 1939

On 21 June 1939, 250 weather records were set or tied at long-record stations worldwide.
74 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 249 daily.
Tulia 6 NE set a daily record precipitation of 88.4 mm (3.5 in) on 21 June 1939.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 432 records.

Record Map

250 stations

250 station records on 21 June 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tulia 6 NE	United States	Record daily precipitation	88.4 mm (3.5 in)	51 of 100 (Notable)
Quanah 2 SW	United States	Record daily precipitation	108.0 mm (4.3 in)	49 of 100 (Notable)
Weatherford	United States	Record daily precipitation	78.0 mm (3.1 in)	46 of 100 (Notable)
Kirksville	United States	Record daily precipitation	84.1 mm (3.3 in)	45 of 100 (Notable)
Holberg	Canada	Record daily precipitation	42.9 mm (1.7 in)	42 of 100 (Notable)
Belle Plaine	United States	Record daily precipitation	63.2 mm (2.5 in)	42 of 100 (Notable)
Childers	Australia	Record daily precipitation	46.7 mm (1.8 in)	39 of 100 (Notable)
Clyde State School	Australia	Record daily precipitation	26.4 mm (1.0 in)	39 of 100 (Notable)
Mt Ayr	United States	Record daily precipitation	61.0 mm (2.4 in)	39 of 100 (Notable)
Hannibal	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Grant City	United States	Record daily precipitation	93.7 mm (3.7 in)	38 of 100 (Notable)
Claude	United States	Record daily precipitation	65.0 mm (2.6 in)	38 of 100 (Notable)
Kotkhai	India	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
Brunswick	United States	Record daily precipitation	80.5 mm (3.2 in)	36 of 100 (Notable)
Macon	United States	Record daily precipitation	60.7 mm (2.4 in)	36 of 100 (Notable)
Farmington 3NW	United States	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Bridgeport	United States	Record daily precipitation	43.9 mm (1.7 in)	35 of 100 (Notable)
Swan Island Lighthouse	Australia	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
Clayoquot	Canada	Record daily precipitation	40.6 mm (1.6 in)	34 of 100 (Routine)
Cloud Chief 2 SE	United States	Record daily precipitation	53.6 mm (2.1 in)	34 of 100 (Routine)
Blue Rapids	United States	Record daily precipitation	67.1 mm (2.6 in)	33 of 100 (Routine)
Maryville 2E	United States	Record daily precipitation	64.8 mm (2.6 in)	32 of 100 (Routine)
Quatsino	Canada	Record daily precipitation	47.5 mm (1.9 in)	31 of 100 (Routine)
Guide Rock	United States	Record daily precipitation	46.5 mm (1.8 in)	31 of 100 (Routine)
Bethany	United States	Record daily precipitation	58.2 mm (2.3 in)	30 of 100 (Routine)
Conception	United States	Record daily precipitation	73.9 mm (2.9 in)	30 of 100 (Routine)
Gallatin 1W	United States	Record daily precipitation	63.8 mm (2.5 in)	30 of 100 (Routine)
Chillicothe	United States	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Monmouth	United States	Record daily precipitation	37.1 mm (1.5 in)	28 of 100 (Routine)
Bedford	United States	Record daily precipitation	51.3 mm (2.0 in)	28 of 100 (Routine)
Miami	United States	Record daily precipitation	47.8 mm (1.9 in)	27 of 100 (Routine)
Halsey 2 W	United States	Record daily precipitation	35.3 mm (1.4 in)	26 of 100 (Routine)
Elkins	United States	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Maple Plain	United States	Record daily precipitation	36.8 mm (1.4 in)	25 of 100 (Routine)
Port Arthur	Canada	Record low minimum temperature	2.8 C (37.0 F)	24 of 100 (Routine)
Geneseo	United States	Record daily precipitation	35.6 mm (1.4 in)	24 of 100 (Routine)
Trenton	United States	Record daily precipitation	50.3 mm (2.0 in)	24 of 100 (Routine)
Harnosand	Sweden	Record high maximum temperature	28.5 C (83.3 F)	23 of 100 (Routine)
Gavle	Sweden	Record high maximum temperature	31.5 C (88.7 F)	23 of 100 (Routine)
Highland Home	United States	Record high minimum temperature	25.6 C (78.1 F)	23 of 100 (Routine)
Glenwood 3SW	United States	Record daily precipitation	29.0 mm (1.1 in)	23 of 100 (Routine)
Leavenworth	United States	Record daily precipitation	50.8 mm (2.0 in)	23 of 100 (Routine)
Pawnee City	United States	Record daily precipitation	50.8 mm (2.0 in)	23 of 100 (Routine)
Ravenna	United States	Record daily precipitation	46.0 mm (1.8 in)	23 of 100 (Routine)
St Cloud State Clg	United States	Record daily precipitation	35.1 mm (1.4 in)	23 of 100 (Routine)
Upper Bingara (Emohta)	Australia	Record daily precipitation	36.6 mm (1.4 in)	22 of 100 (Routine)
St John's	Canada	Record low maximum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Olathe 3E	United States	Record daily precipitation	31.8 mm (1.3 in)	22 of 100 (Routine)
Bird Island	United States	Record daily precipitation	33.0 mm (1.3 in)	22 of 100 (Routine)
Trenton 1 NNE	United States	Record high minimum temperature	25.6 C (78.1 F)	22 of 100 (Routine)
Orlando Executive AP	United States	Record high minimum temperature	26.1 C (79.0 F)	22 of 100 (Routine)
Belle Isle	Canada	Record low maximum temperature	0.6 C (33.1 F)	21 of 100 (Routine)
Perpignan	France	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Table Rock 4N	United States	Record daily precipitation	49.8 mm (2.0 in)	21 of 100 (Routine)
Dalhart Exp STN	United States	Record daily precipitation	30.7 mm (1.2 in)	21 of 100 (Routine)
Memphis	United States	Record daily precipitation	51.6 mm (2.0 in)	21 of 100 (Routine)
Koo Wee Rup	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Miepoll South	Australia	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Willows 6 W	United States	Record high minimum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Blakely	United States	Record high minimum temperature	23.9 C (75.0 F)	20 of 100 (Routine)

Counts by Type and Timescale

250 records

Records set or tied on 21 June 1939 by type: Highest daily maximum 31, Lowest daily maximum 18, Highest daily minimum 43, Lowest daily minimum 16, Heaviest daily rainfall 142.

Records on 21 June 1939 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	18
Highest daily minimum	43
Lowest daily minimum	16
Heaviest daily rainfall	142
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 June 1939 by timescale: all-time 0, monthly 1, daily 249.

How Much Records Were Beaten By

193 broken records

Margins by which the 193 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.9. Ties are not counted.

Top 20 by Significance

21 June 1939

Top 20 records on 21 June 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1939	Tulia 6 NE, US	daily rain	88.4 mm (3.5 in)	50.0 mm (2.0 in)	25 years	51 of 100 (Notable)
21 June 1939	Quanah 2 SW, US	daily rain	108.0 mm (4.3 in)	83.9 mm (3.3 in)	17 years	49 of 100 (Notable)
21 June 1939	Weatherford, US	daily rain	78.0 mm (3.1 in)	54.6 mm (2.1 in)	20 years	46 of 100 (Notable)
21 June 1939	Kirksville, US	daily rain	84.1 mm (3.3 in)	51.1 mm (2.0 in)	45 years	45 of 100 (Notable)
21 June 1939	Holberg, CA	daily rain	42.9 mm (1.7 in)	27.7 mm (1.1 in)	21 years	42 of 100 (Notable)
21 June 1939	Belle Plaine, US	daily rain	63.2 mm (2.5 in)	37.8 mm (1.5 in)	38 years	42 of 100 (Notable)
21 June 1939	Childers, AU	daily rain	46.7 mm (1.8 in)	21.0 mm (0.8 in)	36 years	39 of 100 (Notable)
21 June 1939	Clyde State School, AU	daily rain	26.4 mm (1.0 in)	16.0 mm (0.6 in)	28 years	39 of 100 (Notable)
21 June 1939	Mt Ayr, US	daily rain	61.0 mm (2.4 in)	41.7 mm (1.6 in)	24 years	39 of 100 (Notable)
21 June 1939	Hannibal, US	daily rain	50.8 mm (2.0 in)	39.9 mm (1.6 in)	25 years	39 of 100 (Notable)
21 June 1939	Grant City, US	daily rain	93.7 mm (3.7 in)	42.9 mm (1.7 in)	24 years	38 of 100 (Notable)
21 June 1939	Claude, US	daily rain	65.0 mm (2.6 in)	41.4 mm (1.6 in)	14 years	38 of 100 (Notable)
21 June 1939	Kotkhai, IN	daily rain	50.8 mm (2.0 in)	30.5 mm (1.2 in)	34 years	37 of 100 (Notable)
21 June 1939	Brunswick, US	daily rain	80.5 mm (3.2 in)	56.1 mm (2.2 in)	4 years	36 of 100 (Notable)
21 June 1939	Macon, US	daily rain	60.7 mm (2.4 in)	34.8 mm (1.4 in)	24 years	36 of 100 (Notable)
21 June 1939	Farmington 3NW, US	daily rain	29.7 mm (1.2 in)	18.3 mm (0.7 in)	43 years	35 of 100 (Notable)
21 June 1939	Bridgeport, US	daily rain	43.9 mm (1.7 in)	29.2 mm (1.1 in)	10 years	35 of 100 (Notable)
21 June 1939	Swan Island Lighthouse, AU	daily rain	26.4 mm (1.0 in)	14.2 mm (0.6 in)	22 years	34 of 100 (Routine)
21 June 1939	Clayoquot, CA	daily rain	40.6 mm (1.6 in)	24.6 mm (1.0 in)	32 years	34 of 100 (Routine)
21 June 1939	Cloud Chief 2 SE, US	daily rain	53.6 mm (2.1 in)	37.1 mm (1.5 in)	21 years	34 of 100 (Routine)

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 1939

Records set or tied on this calendar date in each year from 1802 to 1939. 1939 had 250 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 1939-06-21: 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 2026-10-14 (14 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	159
20 to 40	24
40 to 60	9
60 to 80	0
80 to 100	1