Weather Records on 30 June 1939

438 weather records were set or tied worldwide on 30 June 1939. Highest significance: Syktyvkar, RU.

Key Facts for 30 June 1939

On 30 June 1939, 438 weather records were set or tied at long-record stations worldwide.
68 were record highs and 19 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 429 daily.
Syktyvkar set a monthly record daily precipitation of 48.4 mm (1.9 in) on 30 June 1939.
Across 160 earlier years (1826 to 2026) the same calendar date averaged 450 records.

Record Map

438 stations

438 station records on 30 June 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 June 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Syktyvkar	Russia	Record daily precipitation	48.4 mm (1.9 in)	67 of 100 (Major)
Reading Wb City	United States	Record daily precipitation	73.7 mm (2.9 in)	58 of 100 (Notable)
Plauen	Germany	Record daily precipitation	37.5 mm (1.5 in)	45 of 100 (Notable)
Port Lincoln (Westmere)	Australia	Record daily precipitation	36.8 mm (1.4 in)	44 of 100 (Notable)
Cherrapunji/P.S.	India	Record daily precipitation	782.8 mm (30.8 in)	44 of 100 (Notable)
Basel Binningen	Switzerland	Record daily precipitation	39.5 mm (1.6 in)	43 of 100 (Notable)
Plainfield	United States	Record daily precipitation	77.5 mm (3.1 in)	43 of 100 (Notable)
Port Lincoln	Australia	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Rothenburg Ob der Tauber	Germany	Record daily precipitation	28.2 mm (1.1 in)	41 of 100 (Notable)
Yalgogrin North (Roloma)	Australia	Record daily precipitation	32.5 mm (1.3 in)	39 of 100 (Notable)
Beechworth Composite	Australia	Record daily precipitation	41.9 mm (1.6 in)	39 of 100 (Notable)
Gundaroo (Bairnsdale)	Australia	Record daily precipitation	26.4 mm (1.0 in)	38 of 100 (Notable)
Ellwangen-Rindelbach	Germany	Record daily precipitation	36.1 mm (1.4 in)	38 of 100 (Notable)
Mawphlang Obsy	India	Record daily precipitation	435.6 mm (17.1 in)	37 of 100 (Notable)
Mulwala Post Office	Australia	Record daily precipitation	29.2 mm (1.1 in)	36 of 100 (Notable)
Loudon 1 E	United States	Record daily precipitation	57.2 mm (2.3 in)	35 of 100 (Notable)
West Wyalong Post Office	Australia	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Tarcutta Post Office	Australia	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Porto Novo	India	Record daily precipitation	51.3 mm (2.0 in)	34 of 100 (Routine)
Tallangatta Dcnr	Australia	Record daily precipitation	29.7 mm (1.2 in)	33 of 100 (Routine)
Wangaratta	Australia	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Clarksville	United States	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Lankeys Creek (Woodridge)	Australia	Record daily precipitation	51.6 mm (2.0 in)	31 of 100 (Routine)
Wyalong Post Office	Australia	Record daily precipitation	37.1 mm (1.5 in)	31 of 100 (Routine)
Rankins Springs	Australia	Record daily precipitation	37.3 mm (1.5 in)	31 of 100 (Routine)
Cherrapunji	India	Record daily precipitation	807.7 mm (31.8 in)	31 of 100 (Routine)
Moores Hill	United States	Record daily precipitation	60.2 mm (2.4 in)	31 of 100 (Routine)
Trenton 2	United States	Record daily precipitation	89.9 mm (3.5 in)	31 of 100 (Routine)
Lycippus 1 E	United States	Record daily precipitation	47.0 mm (1.9 in)	31 of 100 (Routine)
Mackay Post Office	Australia	Record high maximum temperature	28.6 C (83.5 F)	30 of 100 (Routine)
Elizabeth	United States	Record daily precipitation	50.3 mm (2.0 in)	30 of 100 (Routine)
Willsons River	Australia	Record daily precipitation	34.8 mm (1.4 in)	29 of 100 (Routine)
Kergunyah South	Australia	Record daily precipitation	37.3 mm (1.5 in)	29 of 100 (Routine)
Tarpon Spgs Sewage Plt	United States	Record low minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Kingston	United States	Record daily precipitation	47.5 mm (1.9 in)	29 of 100 (Routine)
Sassafras Post Office	Australia	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Ebrach	Germany	Record daily precipitation	25.8 mm (1.0 in)	28 of 100 (Routine)
Storrs	United States	Record daily precipitation	34.3 mm (1.4 in)	28 of 100 (Routine)
Provincetown 3 NW	United States	Record daily precipitation	30.0 mm (1.2 in)	28 of 100 (Routine)
Wellwood	Australia	Record daily precipitation	61.5 mm (2.4 in)	27 of 100 (Routine)
Crookwell Post Office	Australia	Record daily precipitation	37.8 mm (1.5 in)	27 of 100 (Routine)
Laurel Hill (Kundiewa)	Australia	Record daily precipitation	61.0 mm (2.4 in)	27 of 100 (Routine)
Callaville	United States	Record daily precipitation	40.4 mm (1.6 in)	27 of 100 (Routine)
W Pt	United States	Record daily precipitation	55.9 mm (2.2 in)	26 of 100 (Routine)
Southern Pines 2 W	United States	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
Clearfield	United States	Record daily precipitation	48.3 mm (1.9 in)	26 of 100 (Routine)
Russelkonda	India	Record daily precipitation	62.0 mm (2.4 in)	25 of 100 (Routine)
Kalchini	India	Record daily precipitation	173.7 mm (6.8 in)	25 of 100 (Routine)
Cape Town Fire Station	South Africa	Record daily precipitation	30.5 mm (1.2 in)	25 of 100 (Routine)
Holly Springs 2 N	United States	Record daily precipitation	43.2 mm (1.7 in)	25 of 100 (Routine)
Montrose	United States	Record daily precipitation	50.5 mm (2.0 in)	25 of 100 (Routine)
St Marys	United States	Record daily precipitation	42.4 mm (1.7 in)	25 of 100 (Routine)
Osbornes Flat	Australia	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Babuskin	Russia	Record high minimum temperature	12.7 C (54.9 F)	24 of 100 (Routine)
Fall River	United States	Record daily precipitation	53.3 mm (2.1 in)	24 of 100 (Routine)
Oberlin	United States	Record daily precipitation	53.8 mm (2.1 in)	24 of 100 (Routine)
Jim Thorpe	United States	Record daily precipitation	42.4 mm (1.7 in)	24 of 100 (Routine)
Mazbat(Majbat)	India	Record daily precipitation	78.7 mm (3.1 in)	23 of 100 (Routine)
Kurinjipadi	India	Record daily precipitation	50.5 mm (2.0 in)	23 of 100 (Routine)
New Bedford Coop	United States	Record daily precipitation	49.3 mm (1.9 in)	23 of 100 (Routine)

Counts by Type and Timescale

438 records

Records set or tied on 30 June 1939 by type: Highest daily maximum 15, Lowest daily maximum 12, Highest daily minimum 53, Lowest daily minimum 7, Heaviest daily rainfall 351.

Records on 30 June 1939 by type
Record type	Records
Highest daily maximum	15
Lowest daily maximum	12
Highest daily minimum	53
Lowest daily minimum	7
Heaviest daily rainfall	351
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 June 1939 by timescale: all-time 0, monthly 9, daily 429.

How Much Records Were Beaten By

393 broken records

Margins by which the 393 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 442.4. Ties are not counted.

Top 20 by Significance

30 June 1939

Top 20 records on 30 June 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 June 1939	Syktyvkar, RU	monthly rain	48.4 mm (1.9 in)	18.7 mm (0.7 in)	40 years	67 of 100 (Major)
30 June 1939	Reading Wb City, US	daily rain	73.7 mm (2.9 in)	45.0 mm (1.8 in)	34 years	58 of 100 (Notable)
30 June 1939	Plauen, DE	daily rain	37.5 mm (1.5 in)	19.3 mm (0.8 in)	53 years	45 of 100 (Notable)
30 June 1939	Port Lincoln (Westmere), AU	daily rain	36.8 mm (1.4 in)	24.1 mm (0.9 in)	16 years	44 of 100 (Notable)
30 June 1939	Cherrapunji/P.S., IN	daily rain	782.8 mm (30.8 in)	442.4 mm (17.4 in)	12 years	44 of 100 (Notable)
30 June 1939	Basel Binningen, CH	daily rain	39.5 mm (1.6 in)	24.5 mm (1.0 in)	21 years	43 of 100 (Notable)
30 June 1939	Plainfield, US	daily rain	77.5 mm (3.1 in)	39.4 mm (1.6 in)	17 years	43 of 100 (Notable)
30 June 1939	Port Lincoln, AU	daily rain	30.0 mm (1.2 in)	15.3 mm (0.6 in)	28 years	42 of 100 (Notable)
30 June 1939	Rothenburg Ob der Tauber, DE	daily rain	28.2 mm (1.1 in)	19.9 mm (0.8 in)	28 years	41 of 100 (Notable)
30 June 1939	Yalgogrin North (Roloma), AU	daily rain	32.5 mm (1.3 in)	19.0 mm (0.7 in)	33 years	39 of 100 (Notable)
30 June 1939	Beechworth Composite, AU	daily rain	41.9 mm (1.6 in)	24.4 mm (1.0 in)	28 years	39 of 100 (Notable)
30 June 1939	Gundaroo (Bairnsdale), AU	daily rain	26.4 mm (1.0 in)	18.3 mm (0.7 in)	24 years	38 of 100 (Notable)
30 June 1939	Ellwangen-Rindelbach, DE	daily rain	36.1 mm (1.4 in)	20.1 mm (0.8 in)	29 years	38 of 100 (Notable)
30 June 1939	Mawphlang Obsy, IN	daily rain	435.6 mm (17.1 in)	138.4 mm (5.4 in)	25 years	37 of 100 (Notable)
30 June 1939	Mulwala Post Office, AU	daily rain	29.2 mm (1.1 in)	19.0 mm (0.7 in)	33 years	36 of 100 (Notable)
30 June 1939	Loudon 1 E, US	daily rain	57.2 mm (2.3 in)	20.4 mm (0.8 in)	43 years	35 of 100 (Notable)
30 June 1939	West Wyalong Post Office, AU	daily rain	38.1 mm (1.5 in)	19.6 mm (0.8 in)	17 years	34 of 100 (Routine)
30 June 1939	Tarcutta Post Office, AU	daily rain	38.1 mm (1.5 in)	7.9 mm (0.31 in)	66 years	34 of 100 (Routine)
30 June 1939	Porto Novo, IN	daily rain	51.3 mm (2.0 in)	28.2 mm (1.1 in)	20 years	34 of 100 (Routine)
30 June 1939	Tallangatta Dcnr, AU	daily rain	29.7 mm (1.2 in)	11.9 mm (0.5 in)	51 years	33 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

1826 to 1939

Records set or tied on this calendar date in each year from 1826 to 1939. 1939 had 438 records.

Counts for years before the ledger starts come from the same station rules.

Records on 06-30 in each year
Year	Records
1826	1
1832	1
1835	2
1843	2
1846	1
1848	2
1849	1
1853	1
1855	1
1857	1
1860	1
1863	1
1865	1
1869	1
1871	1
1873	1
1876	1
1879	2
1882	2
1883	3
1885	4
1886	1
1887	2
1888	2
1889	1
1890	3
1891	2
1892	1
1894	1
1895	1
1896	2
1897	6
1898	3
1899	4
1900	5
1901	9
1902	10
1903	8
1904	20
1905	23
1906	20
1907	12
1908	17
1909	39
1910	57
1911	12
1912	32
1913	99
1914	97
1915	40
1916	66
1917	39
1918	54
1919	72
1920	319
1921	121
1922	133
1923	309
1924	194
1925	113
1926	65
1927	240
1928	137
1929	213
1930	168
1931	774
1932	154
1933	571
1934	331
1935	347
1936	620
1937	458
1938	330
1939	438
1940	346
1941	341
1942	408
1943	790
1944	272
1945	671
1946	631
1947	487
1948	340
1949	403
1950	494
1951	517
1952	533
1953	404
1954	426
1955	432
1956	409
1957	592
1958	423
1959	948
1960	270
1961	351
1962	375
1963	560
1964	434
1965	240
1966	379
1967	414
1968	752
1969	459
1970	730
1971	459
1972	558
1973	623
1974	643
1975	414
1976	607
1977	662
1978	721
1979	601
1980	935
1981	838
1982	1,230
1983	752
1984	722
1985	829
1986	745
1987	1,044
1988	1,216
1989	953
1990	1,191
1991	1,129
1992	1,670
1993	711
1994	951
1995	1,354
1996	889
1997	938
1998	1,714
1999	910
2000	861
2001	778
2002	904
2003	896
2004	998
2005	1,526
2006	723
2007	736
2008	852
2009	1,052
2010	1,069
2011	1,057
2012	1,416
2013	963
2014	496
2015	1,018
2016	371
2017	642
2018	625
2019	1,042
2020	1,151
2021	1,442
2022	709
2023	531
2024	1,004
2025	858
2026	999

Download the Data

Data for records on 1939-06-30: 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 100	390
100 to 200	1
200 to 300	1
300 to 400	0
400 to 500	1