Weather Records on 21 June 1930

177 weather records were set or tied worldwide on 21 June 1930. Highest significance: Brome, CA.

Key Facts for 21 June 1930

On 21 June 1930, 177 weather records were set or tied at long-record stations worldwide.
145 were record highs and 15 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 1 monthly and 175 daily.
Brome set a daily record precipitation of 68.3 mm (2.7 in) on 21 June 1930.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 433 records.

Record Map

177 stations

177 station records on 21 June 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Brome	Canada	Record daily precipitation	68.3 mm (2.7 in)	38 of 100 (Notable)
Clemson UNIV	United States	Record daily precipitation	63.5 mm (2.5 in)	37 of 100 (Notable)
Blackville (Krui Vale)	Australia	Record daily precipitation	62.5 mm (2.5 in)	29 of 100 (Routine)
Manitowoc	United States	Record high minimum temperature	23.3 C (73.9 F)	25 of 100 (Routine)
Bird Rocks	Canada	Record high minimum temperature	11.1 C (52.0 F)	22 of 100 (Routine)
Gorlitz	Germany	Record high minimum temperature	16.8 C (62.2 F)	21 of 100 (Routine)
Storlien	Sweden	Record high minimum temperature	13.0 C (55.4 F)	21 of 100 (Routine)
Santa Fe	United States	Record high minimum temperature	19.4 C (66.9 F)	21 of 100 (Routine)
Waterville	United States	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Conconully	United States	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Canon City	United States	Record high maximum temperature	38.9 C (102.0 F)	20 of 100 (Routine)
Clinton Forestry HQ	United States	Record high maximum temperature	37.8 C (100.0 F)	19 of 100 (Routine)
Orenburg	Russia	Record daily precipitation	7.9 mm (0.31 in)	18 of 100 (Routine)
Sveg	Sweden	Record high maximum temperature	29.0 C (84.2 F)	18 of 100 (Routine)
Le Bourget	France	Record high minimum temperature	15.5 C (59.9 F)	17 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record high minimum temperature	14.5 C (58.1 F)	17 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	15.0 C (59.0 F)	17 of 100 (Routine)
Tarnaby	Sweden	Record high minimum temperature	12.0 C (53.6 F)	17 of 100 (Routine)
Louisville	United States	Record high minimum temperature	23.9 C (75.0 F)	17 of 100 (Routine)
Dickinson Exp STN	United States	Record daily precipitation	29.2 mm (1.1 in)	17 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	16.0 mm (0.6 in)	16 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record high minimum temperature	11.0 C (51.8 F)	16 of 100 (Routine)
Sac City	United States	Record high maximum temperature	35.6 C (96.1 F)	16 of 100 (Routine)
Macksville 8 NNE	United States	Record high maximum temperature	39.4 C (102.9 F)	16 of 100 (Routine)
Lincoln UNIV Pwr Plt	United States	Record high maximum temperature	38.3 C (100.9 F)	16 of 100 (Routine)
Canon City	United States	Record high minimum temperature	19.4 C (66.9 F)	15 of 100 (Routine)
Durango	United States	Record high minimum temperature	13.9 C (57.0 F)	15 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record high minimum temperature	25.0 C (77.0 F)	15 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	39.4 C (102.9 F)	15 of 100 (Routine)
Leakesville 6 WSW	United States	Record high maximum temperature	38.3 C (100.9 F)	15 of 100 (Routine)
Magnolia	United States	Record high maximum temperature	39.4 C (102.9 F)	15 of 100 (Routine)
Manitowoc	United States	Record high maximum temperature	32.8 C (91.0 F)	15 of 100 (Routine)
Denison	United States	Record high maximum temperature	36.7 C (98.1 F)	14 of 100 (Routine)
Logan 1 WNW	United States	Record high minimum temperature	25.6 C (78.1 F)	14 of 100 (Routine)
Eubank	United States	Record high maximum temperature	35.0 C (95.0 F)	14 of 100 (Routine)
Tekamah	United States	Record high maximum temperature	37.2 C (99.0 F)	14 of 100 (Routine)
Corvallis State UNIV	United States	Record high minimum temperature	16.7 C (62.1 F)	14 of 100 (Routine)
Newberry	United States	Record low maximum temperature	26.7 C (80.1 F)	14 of 100 (Routine)
Academy 2NE	United States	Record high minimum temperature	23.9 C (75.0 F)	14 of 100 (Routine)
Bellbrook (East Street)	Australia	Record daily precipitation	49.0 mm (1.9 in)	13 of 100 (Routine)
Niznij Novgorod	Russia	Record low minimum temperature	6.4 C (43.5 F)	13 of 100 (Routine)
Elatma	Russia	Record low minimum temperature	6.1 C (43.0 F)	13 of 100 (Routine)
Blagovescensk	Russia	Record low minimum temperature	8.0 C (46.4 F)	13 of 100 (Routine)
Malvern	United Kingdom	Record high minimum temperature	15.0 C (59.0 F)	13 of 100 (Routine)
Clanton	United States	Record high maximum temperature	37.8 C (100.0 F)	13 of 100 (Routine)
Madison	United States	Record high maximum temperature	38.3 C (100.9 F)	13 of 100 (Routine)
Wetumpka	United States	Record high maximum temperature	38.9 C (102.0 F)	13 of 100 (Routine)
Harlan	United States	Record high maximum temperature	36.1 C (97.0 F)	13 of 100 (Routine)
Emporia 1 S	United States	Record high maximum temperature	37.8 C (100.0 F)	13 of 100 (Routine)
Macon 2 NE	United States	Record high minimum temperature	24.4 C (75.9 F)	13 of 100 (Routine)
University	United States	Record high minimum temperature	24.4 C (75.9 F)	13 of 100 (Routine)
Marble Hill	United States	Record high maximum temperature	38.9 C (102.0 F)	13 of 100 (Routine)
Colfax	United States	Record daily precipitation	14.7 mm (0.6 in)	13 of 100 (Routine)
Cairns Post Office	Australia	Record low minimum temperature	10.6 C (51.1 F)	12 of 100 (Routine)
Fort Macleod	Canada	Record low maximum temperature	11.1 C (52.0 F)	12 of 100 (Routine)
Nicosia	Cyprus	Record daily precipitation	2.3 mm (0.09 in)	12 of 100 (Routine)
Athens	United States	Record high minimum temperature	23.9 C (75.0 F)	12 of 100 (Routine)
Audubon	United States	Record high maximum temperature	36.1 C (97.0 F)	12 of 100 (Routine)
Newton	United States	Record high maximum temperature	37.2 C (99.0 F)	12 of 100 (Routine)
Lake	United States	Record high maximum temperature	37.8 C (100.0 F)	12 of 100 (Routine)

Counts by Type and Timescale

177 records

Records set or tied on 21 June 1930 by type: Highest daily maximum 92, Lowest daily maximum 9, Highest daily minimum 53, Lowest daily minimum 6, Heaviest daily rainfall 17.

Records on 21 June 1930 by type
Record type	Records
Highest daily maximum	92
Lowest daily maximum	9
Highest daily minimum	53
Lowest daily minimum	6
Heaviest daily rainfall	17
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 June 1930 by timescale: all-time 1, monthly 1, daily 175.

How Much Records Were Beaten By

113 broken records

Margins by which the 113 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 40.9. Ties are not counted.

Top 20 by Significance

21 June 1930

Top 20 records on 21 June 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1930	Brome, CA	daily rain	68.3 mm (2.7 in)	27.7 mm (1.1 in)	27 years	38 of 100 (Notable)
21 June 1930	Clemson UNIV, US	daily rain	63.5 mm (2.5 in)	40.9 mm (1.6 in)	21 years	37 of 100 (Notable)
21 June 1930	Blackville (Krui Vale), AU	daily rain	62.5 mm (2.5 in)	22.6 mm (0.9 in)	29 years	29 of 100 (Routine)
21 June 1930	Manitowoc, US	daily high min	23.3 C (73.9 F)	6.6 C (11.9 F)	11 years	25 of 100 (Routine)
21 June 1930	Bird Rocks, CA	daily high min	11.1 C (52.0 F)	1.1 C (2.0 F)	43 years	22 of 100 (Routine)
21 June 1930	Gorlitz, DE	daily high min	16.8 C (62.2 F)	2.0 C (3.6 F)	34 years	21 of 100 (Routine)
21 June 1930	Storlien, SE	daily high min	13.0 C (55.4 F)	3.0 C (5.4 F)	28 years	21 of 100 (Routine)
21 June 1930	Santa Fe, US	daily high min	19.4 C (66.9 F)	2.7 C (4.9 F)	29 years	21 of 100 (Routine)
21 June 1930	Waterville, US	daily rain	19.3 mm (0.8 in)	12.7 mm (0.5 in)	23 years	20 of 100 (Routine)
21 June 1930	Conconully, US	daily rain	16.5 mm (0.6 in)	12.2 mm (0.5 in)	29 years	20 of 100 (Routine)
21 June 1930	Canon City, US	daily high max	38.9 C (102.0 F)	3.3 C (5.9 F)	36 years	20 of 100 (Routine)
21 June 1930	Clinton Forestry HQ, US	daily high max	37.8 C (100.0 F)	1.7 C (3.1 F)	32 years	19 of 100 (Routine)
21 June 1930	Orenburg, RU	daily rain	7.9 mm (0.31 in)	2.5 mm (0.10 in)	35 years	18 of 100 (Routine)
21 June 1930	Sveg, SE	daily high max	29.0 C (84.2 F)	2.0 C (3.6 F)	35 years	18 of 100 (Routine)
21 June 1930	Le Bourget, FR	daily high min	15.5 C (59.9 F)	1.6 C (2.9 F)	29 years	17 of 100 (Routine)
21 June 1930	Oestersund-Froesoen, SE	daily high min	14.5 C (58.1 F)	1.1 C (2.0 F)	35 years	17 of 100 (Routine)
21 June 1930	Pitea, SE	daily high min	15.0 C (59.0 F)	1.0 C (1.8 F)	35 years	17 of 100 (Routine)
21 June 1930	Tarnaby, SE	daily high min	12.0 C (53.6 F)	1.5 C (2.7 F)	35 years	17 of 100 (Routine)
21 June 1930	Louisville, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	38 years	17 of 100 (Routine)
21 June 1930	Dickinson Exp STN, US	daily rain	29.2 mm (1.1 in)	10.7 mm (0.4 in)	16 years	17 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 1930

Records set or tied on this calendar date in each year from 1802 to 1930. 1930 had 177 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 1930-06-21: 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 10	107
10 to 20	3
20 to 30	2
30 to 40	0
40 to 50	1