Weather Records on 21 June 1977

476 weather records were set or tied worldwide on 21 June 1977. Highest significance: Kola-In-Murman, RU.

Key Facts for 21 June 1977

On 21 June 1977, 476 weather records were set or tied at long-record stations worldwide.
146 were record highs and 123 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 15 monthly and 458 daily.
Kola-In-Murman set an all-time record daily precipitation of 69.6 mm (2.7 in) on 21 June 1977.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 431 records.

Record Map

476 stations

476 station records on 21 June 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kola-In-Murman	Russia	Record daily precipitation	69.6 mm (2.7 in)	65 of 100 (Major)
Jiloy,Ostrov	Azerbaijan	Record daily precipitation	27.7 mm (1.1 in)	60 of 100 (Major)
Booylgoo Spring	Australia	Record daily precipitation	35.2 mm (1.4 in)	54 of 100 (Notable)
Poljarnoe	Russia	Record daily precipitation	40.3 mm (1.6 in)	53 of 100 (Notable)
Murmansk	Russia	Record daily precipitation	40.3 mm (1.6 in)	53 of 100 (Notable)
Teriberka	Russia	Record daily precipitation	29.3 mm (1.2 in)	51 of 100 (Notable)
Vajda-Guba	Russia	Record daily precipitation	26.1 mm (1.0 in)	50 of 100 (Notable)
Melrose	Australia	Record daily precipitation	28.7 mm (1.1 in)	49 of 100 (Notable)
Rheinstetten	Germany	Record daily precipitation	61.0 mm (2.4 in)	49 of 100 (Notable)
Crete 4ESE	United States	Record daily precipitation	75.7 mm (3.0 in)	47 of 100 (Notable)
Fizuly	Azerbaijan	Record daily precipitation	48.5 mm (1.9 in)	46 of 100 (Notable)
Panuco (Smn)	Mexico	Record daily precipitation	148.8 mm (5.9 in)	46 of 100 (Notable)
Kempten	Germany	Record daily precipitation	55.4 mm (2.2 in)	45 of 100 (Notable)
Geneva	United States	Record daily precipitation	74.2 mm (2.9 in)	45 of 100 (Notable)
Puerto Madero	Mexico	Record low minimum temperature	10.6 C (51.1 F)	42 of 100 (Notable)
Karlsruhe	Germany	Record daily precipitation	30.9 mm (1.2 in)	41 of 100 (Notable)
Vardoe	Norway	Record low minimum temperature	-1.8 C (28.8 F)	41 of 100 (Notable)
Lemmon	United States	Record daily precipitation	80.5 mm (3.2 in)	41 of 100 (Notable)
Guaira	Brazil	Record daily precipitation	71.0 mm (2.8 in)	40 of 100 (Notable)
Elsenburg	South Africa	Record daily precipitation	31.6 mm (1.2 in)	40 of 100 (Notable)
Puts	South Africa	Record daily precipitation	44.0 mm (1.7 in)	40 of 100 (Notable)
Carlsbad	United States	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Cidra 1 E	Puerto Rico [United States]	Record high minimum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Kurgan	Russia	Record daily precipitation	38.8 mm (1.5 in)	38 of 100 (Notable)
Chicoutimi	Canada	Record low maximum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Schwabisch Hall-Bibersfeld	Germany	Record daily precipitation	41.8 mm (1.6 in)	37 of 100 (Notable)
Jakutsk	Russia	Record high minimum temperature	18.7 C (65.7 F)	37 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record high minimum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Independence	United States	Record daily precipitation	136.1 mm (5.4 in)	36 of 100 (Notable)
Uberlingen/Bodensee	Germany	Record daily precipitation	47.0 mm (1.9 in)	35 of 100 (Notable)
Konstanz	Germany	Record daily precipitation	37.2 mm (1.5 in)	33 of 100 (Routine)
Chietla	Mexico	Record daily precipitation	63.8 mm (2.5 in)	33 of 100 (Routine)
Padun	Russia	Record daily precipitation	36.7 mm (1.4 in)	33 of 100 (Routine)
Plains	United States	Record daily precipitation	34.8 mm (1.4 in)	33 of 100 (Routine)
Tashkent	Uzbekistan	Record high maximum temperature	40.5 C (104.9 F)	33 of 100 (Routine)
McAlester Rgnl AP	United States	Record high minimum temperature	25.6 C (78.1 F)	32 of 100 (Routine)
Caucaia	Brazil	Record daily precipitation	33.0 mm (1.3 in)	31 of 100 (Routine)
Gyshgy	Turkmenistan	Record high maximum temperature	42.3 C (108.1 F)	30 of 100 (Routine)
Osawatomie	United States	Record daily precipitation	90.2 mm (3.6 in)	30 of 100 (Routine)
Canyon Creek	United States	Record daily precipitation	27.7 mm (1.1 in)	30 of 100 (Routine)
Coppermine	Canada	Record high minimum temperature	13.2 C (55.8 F)	29 of 100 (Routine)
Reimlingen	Germany	Record daily precipitation	28.8 mm (1.1 in)	29 of 100 (Routine)
Galeana (Smn)	Mexico	Record high minimum temperature	26.7 C (80.1 F)	29 of 100 (Routine)
Kluitjeskraal (Bos)	South Africa	Record daily precipitation	25.0 mm (1.0 in)	29 of 100 (Routine)
Anderson	United States	Record daily precipitation	69.9 mm (2.8 in)	29 of 100 (Routine)
Ellsworth 2W	United States	Record daily precipitation	39.1 mm (1.5 in)	29 of 100 (Routine)
Mitchell 5E	United States	Record daily precipitation	63.5 mm (2.5 in)	29 of 100 (Routine)
Aquiraz	Brazil	Record daily precipitation	64.2 mm (2.5 in)	28 of 100 (Routine)
Pachena Point	Canada	Record daily precipitation	29.2 mm (1.1 in)	28 of 100 (Routine)
Rothenburg Ob der Tauber	Germany	Record daily precipitation	32.9 mm (1.3 in)	28 of 100 (Routine)
Ft Gaines	United States	Record high minimum temperature	24.4 C (75.9 F)	28 of 100 (Routine)
Seymour Falls	Canada	Record daily precipitation	31.0 mm (1.2 in)	27 of 100 (Routine)
Arteaga (Smn)	Mexico	Record daily precipitation	84.8 mm (3.3 in)	27 of 100 (Routine)
Aguililla	Mexico	Record daily precipitation	58.4 mm (2.3 in)	27 of 100 (Routine)
Kanin Nos	Russia	Record high maximum temperature	21.3 C (70.3 F)	27 of 100 (Routine)
Eersterivier (Bos)	South Africa	Record daily precipitation	27.5 mm (1.1 in)	27 of 100 (Routine)
Lake Alfred Exp STN	United States	Record daily precipitation	72.9 mm (2.9 in)	27 of 100 (Routine)
Kr.Rottal-Inn Falkenberg	Germany	Record daily precipitation	38.5 mm (1.5 in)	26 of 100 (Routine)
Springerville	United States	Record low minimum temperature	0.0 C (32.0 F)	26 of 100 (Routine)
Estevan Point	Canada	Record daily precipitation	38.6 mm (1.5 in)	25 of 100 (Routine)

Counts by Type and Timescale

476 records

Records set or tied on 21 June 1977 by type: Highest daily maximum 57, Lowest daily maximum 82, Highest daily minimum 89, Lowest daily minimum 41, Heaviest daily rainfall 206, Deepest snow cover 1.

Records on 21 June 1977 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	82
Highest daily minimum	89
Lowest daily minimum	41
Heaviest daily rainfall	206
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 21 June 1977 by timescale: all-time 3, monthly 15, daily 458.

How Much Records Were Beaten By

396 broken records

Margins by which the 396 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 114.0. Ties are not counted.

Top 20 by Significance

21 June 1977

Top 20 records on 21 June 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1977	Kola-In-Murman, RU	all-time rain	69.6 mm (2.7 in)	13.7 mm (0.5 in)	8 years	65 of 100 (Major)
21 June 1977	Jiloy,Ostrov, AZ	monthly rain	27.7 mm (1.1 in)	19.6 mm (0.8 in)	22 years	60 of 100 (Major)
21 June 1977	Booylgoo Spring, AU	daily rain	35.2 mm (1.4 in)	26.8 mm (1.1 in)	32 years	54 of 100 (Notable)
21 June 1977	Poljarnoe, RU	all-time rain	40.3 mm (1.6 in)	8.4 mm (0.33 in)	18 years	53 of 100 (Notable)
21 June 1977	Murmansk, RU	monthly rain	40.3 mm (1.6 in)	12.8 mm (0.5 in)	22 years	53 of 100 (Notable)
21 June 1977	Teriberka, RU	daily rain	29.3 mm (1.2 in)	16.3 mm (0.6 in)	12 years	51 of 100 (Notable)
21 June 1977	Vajda-Guba, RU	daily rain	26.1 mm (1.0 in)	12.6 mm (0.5 in)	12 years	50 of 100 (Notable)
21 June 1977	Melrose, AU	daily rain	28.7 mm (1.1 in)	23.6 mm (0.9 in)	32 years	49 of 100 (Notable)
21 June 1977	Rheinstetten, DE	daily rain	61.0 mm (2.4 in)	40.3 mm (1.6 in)	18 years	49 of 100 (Notable)
21 June 1977	Crete 4ESE, US	daily rain	75.7 mm (3.0 in)	42.2 mm (1.7 in)	46 years	47 of 100 (Notable)
21 June 1977	Fizuly, AZ	daily rain	48.5 mm (1.9 in)	35.6 mm (1.4 in)	8 years	46 of 100 (Notable)
21 June 1977	Panuco (Smn), MX	daily rain	148.8 mm (5.9 in)	114.0 mm (4.5 in)	11 years	46 of 100 (Notable)
21 June 1977	Kempten, DE	daily rain	55.4 mm (2.2 in)	14.8 mm (0.6 in)	74 years	45 of 100 (Notable)
21 June 1977	Geneva, US	daily rain	74.2 mm (2.9 in)	36.1 mm (1.4 in)	48 years	45 of 100 (Notable)
21 June 1977	Puerto Madero, MX	daily low min	10.6 C (51.1 F)	7.2 C (13.0 F)	22 years	42 of 100 (Notable)
21 June 1977	Karlsruhe, DE	daily rain	30.9 mm (1.2 in)	10.9 mm (0.4 in)	60 years	41 of 100 (Notable)
21 June 1977	Vardoe, NO	daily low min	-1.8 C (28.8 F)	2.8 C (5.0 F)	76 years	41 of 100 (Notable)
21 June 1977	Lemmon, US	daily rain	80.5 mm (3.2 in)	30.5 mm (1.2 in)	30 years	41 of 100 (Notable)
21 June 1977	Guaira, BR	daily rain	71.0 mm (2.8 in)	60.0 mm (2.4 in)	8 years	40 of 100 (Notable)
21 June 1977	Elsenburg, ZA	daily rain	31.6 mm (1.2 in)	12.9 mm (0.5 in)	67 years	40 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 1977

Records set or tied on this calendar date in each year from 1802 to 1977. 1977 had 476 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 1977-06-21: 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	373
20 to 40	18
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	1