Weather Records on 4 August 1930

698 weather records were set or tied worldwide on 4 August 1930. Highest significance: Sunbury (Salesian College ), AU.

Key Facts for 4 August 1930

On 4 August 1930, 698 weather records were set or tied at long-record stations worldwide.
614 were record highs and 13 were record lows, counting maximum and minimum temperature.
By timescale, 44 were all-time records, 75 monthly and 579 daily.
Sunbury (Salesian College ) set a daily record precipitation of 42.4 mm (1.7 in) on 4 August 1930.
Across 165 earlier years (1815 to 2026) the same calendar date averaged 440 records.

Record Map

698 stations

698 station records on 4 August 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 August 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sunbury (Salesian College )	Australia	Record daily precipitation	42.4 mm (1.7 in)	54 of 100 (Notable)
Blackwood	Australia	Record daily precipitation	72.4 mm (2.9 in)	51 of 100 (Notable)
Biser	Russia	Record daily precipitation	38.0 mm (1.5 in)	51 of 100 (Notable)
Colac (Shire Office)	Australia	Record daily precipitation	39.1 mm (1.5 in)	48 of 100 (Notable)
W Pt	United States	Record daily precipitation	107.7 mm (4.2 in)	46 of 100 (Notable)
Keosauqua	United States	Record high minimum temperature	31.7 C (89.1 F)	45 of 100 (Notable)
Ballan	Australia	Record daily precipitation	27.7 mm (1.1 in)	43 of 100 (Notable)
Stromsfoss Sluse	Norway	Record daily precipitation	45.5 mm (1.8 in)	43 of 100 (Notable)
Dunkeld	Australia	Record daily precipitation	33.8 mm (1.3 in)	37 of 100 (Notable)
Blayney Post Office	Australia	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Minonk	United States	Record high minimum temperature	26.7 C (80.1 F)	34 of 100 (Routine)
Warrenton 1 N	United States	Record high minimum temperature	27.8 C (82.0 F)	34 of 100 (Routine)
Gunnison 3SW	United States	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Emmitsburg	United States	Record high maximum temperature	39.4 C (102.9 F)	33 of 100 (Routine)
Owosso Wwtp	United States	Record high minimum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Huntingdon	United States	Record high maximum temperature	40.6 C (105.1 F)	33 of 100 (Routine)
Lebo	United States	Record high maximum temperature	43.3 C (109.9 F)	32 of 100 (Routine)
Mexico	United States	Record high minimum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Mascoutah	United States	Record high minimum temperature	28.3 C (82.9 F)	31 of 100 (Routine)
Worcester	South Africa	Record daily precipitation	44.5 mm (1.8 in)	30 of 100 (Routine)
Macon	United States	Record high minimum temperature	27.2 C (81.0 F)	30 of 100 (Routine)
Altoona Horseshoe Curv	United States	Record high maximum temperature	38.9 C (102.0 F)	30 of 100 (Routine)
Cap Madeleine	Canada	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Ann Arbor U of Mich	United States	Record high minimum temperature	26.7 C (80.1 F)	29 of 100 (Routine)
Harrisburg - Coop	United States	Record high maximum temperature	39.4 C (102.9 F)	29 of 100 (Routine)
Galva	United States	Record high minimum temperature	26.7 C (80.1 F)	28 of 100 (Routine)
Uniontown 1 NE	United States	Record high maximum temperature	38.9 C (102.0 F)	28 of 100 (Routine)
Collegeville St Joe AP	United States	Record high minimum temperature	26.7 C (80.1 F)	27 of 100 (Routine)
Burlington	United States	Record high maximum temperature	44.4 C (111.9 F)	27 of 100 (Routine)
Hagerstown 1E	United States	Record high maximum temperature	40.0 C (104.0 F)	27 of 100 (Routine)
Alma	United States	Record high minimum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
S Haven	United States	Record high minimum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Philo 3 SW	United States	Record high maximum temperature	40.6 C (105.1 F)	27 of 100 (Routine)
Lewisburg	United States	Record high maximum temperature	41.1 C (106.0 F)	27 of 100 (Routine)
Lost Creek Near	United States	Record high maximum temperature	39.4 C (102.9 F)	27 of 100 (Routine)
Burlington Muni AP	United States	Record high minimum temperature	27.2 C (81.0 F)	27 of 100 (Routine)
Marietta Wtr Wks	United States	Record high maximum temperature	40.6 C (105.1 F)	26 of 100 (Routine)
Woodstock	Canada	Record high minimum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Charleston	United States	Record high minimum temperature	26.1 C (79.0 F)	25 of 100 (Routine)
Millerton	United States	Record high minimum temperature	28.3 C (82.9 F)	25 of 100 (Routine)
State College	United States	Record high maximum temperature	38.3 C (100.9 F)	25 of 100 (Routine)
Hot Springs	United States	Record high maximum temperature	34.4 C (93.9 F)	25 of 100 (Routine)
Moorefield 1 SSE	United States	Record high maximum temperature	44.4 C (111.9 F)	25 of 100 (Routine)
Green Bay	United States	Record high minimum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Dubuque River	United States	Record high minimum temperature	26.1 C (79.0 F)	25 of 100 (Routine)
Bloomington Normal	United States	Record high minimum temperature	27.2 C (81.0 F)	24 of 100 (Routine)
Olney 2S	United States	Record high minimum temperature	26.1 C (79.0 F)	24 of 100 (Routine)
Ft Wayne City	United States	Record high minimum temperature	25.6 C (78.1 F)	24 of 100 (Routine)
Emporia 1 S	United States	Record high maximum temperature	45.6 C (114.1 F)	24 of 100 (Routine)
Hays 1 S	United States	Record high minimum temperature	27.8 C (82.0 F)	24 of 100 (Routine)
St John Bethlehem Aca	United States	Record high maximum temperature	41.7 C (107.1 F)	24 of 100 (Routine)
Beatrice	United States	Record high maximum temperature	44.4 C (111.9 F)	24 of 100 (Routine)
Blacksburg	United States	Record high maximum temperature	36.7 C (98.1 F)	24 of 100 (Routine)
Lake Mills Wwtp	United States	Record high minimum temperature	25.6 C (78.1 F)	24 of 100 (Routine)
New London	United States	Record high minimum temperature	23.3 C (73.9 F)	24 of 100 (Routine)
Bonang	Australia	Record daily precipitation	43.4 mm (1.7 in)	23 of 100 (Routine)
Penshurst (Post Office)	Australia	Record daily precipitation	26.4 mm (1.0 in)	23 of 100 (Routine)
Burkes Garden	United States	Record high maximum temperature	33.3 C (91.9 F)	23 of 100 (Routine)
Beloit	United States	Record high minimum temperature	24.4 C (75.9 F)	23 of 100 (Routine)
London South	Canada	Record high minimum temperature	23.9 C (75.0 F)	22 of 100 (Routine)

Counts by Type and Timescale

698 records

Records set or tied on 4 August 1930 by type: Highest daily maximum 321, Lowest daily maximum 5, Highest daily minimum 293, Lowest daily minimum 8, Heaviest daily rainfall 71.

Records on 4 August 1930 by type
Record type	Records
Highest daily maximum	321
Lowest daily maximum	5
Highest daily minimum	293
Lowest daily minimum	8
Heaviest daily rainfall	71
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 August 1930 by timescale: all-time 44, monthly 75, daily 579.

How Much Records Were Beaten By

507 broken records

Margins by which the 507 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 81.8. Ties are not counted.

Top 20 by Significance

4 August 1930

Top 20 records on 4 August 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 August 1930	Sunbury (Salesian College ), AU	daily rain	42.4 mm (1.7 in)	34.5 mm (1.4 in)	30 years	54 of 100 (Notable)
4 August 1930	Blackwood, AU	daily rain	72.4 mm (2.9 in)	49.5 mm (1.9 in)	23 years	51 of 100 (Notable)
4 August 1930	Biser, RU	daily rain	38.0 mm (1.5 in)	30.8 mm (1.2 in)	32 years	51 of 100 (Notable)
4 August 1930	Colac (Shire Office), AU	daily rain	39.1 mm (1.5 in)	29.4 mm (1.2 in)	16 years	48 of 100 (Notable)
4 August 1930	W Pt, US	daily rain	107.7 mm (4.2 in)	81.8 mm (3.2 in)	8 years	46 of 100 (Notable)
4 August 1930	Keosauqua, US	all-time high min	31.7 C (89.1 F)	5.0 C (9.0 F)	34 years	45 of 100 (Notable)
4 August 1930	Ballan, AU	daily rain	27.7 mm (1.1 in)	13.2 mm (0.5 in)	54 years	43 of 100 (Notable)
4 August 1930	Stromsfoss Sluse, NO	daily rain	45.5 mm (1.8 in)	26.4 mm (1.0 in)	24 years	43 of 100 (Notable)
4 August 1930	Dunkeld, AU	daily rain	33.8 mm (1.3 in)	14.7 mm (0.6 in)	15 years	37 of 100 (Notable)
4 August 1930	Blayney Post Office, AU	daily rain	36.6 mm (1.4 in)	17.5 mm (0.7 in)	23 years	34 of 100 (Routine)
4 August 1930	Minonk, US	all-time high min	26.7 C (80.1 F)	1.1 C (2.0 F)	33 years	34 of 100 (Routine)
4 August 1930	Warrenton 1 N, US	all-time high min	27.8 C (82.0 F)	1.1 C (2.0 F)	29 years	34 of 100 (Routine)
4 August 1930	Gunnison 3SW, US	monthly high min	18.9 C (66.0 F)	4.5 C (8.1 F)	20 years	33 of 100 (Routine)
4 August 1930	Emmitsburg, US	all-time high max	39.4 C (102.9 F)	0.5 C (0.9 F)	32 years	33 of 100 (Routine)
4 August 1930	Owosso Wwtp, US	all-time high min	27.2 C (81.0 F)	0.5 C (0.9 F)	30 years	33 of 100 (Routine)
4 August 1930	Huntingdon, US	all-time high max	40.6 C (105.1 F)	0.6 C (1.1 F)	32 years	33 of 100 (Routine)
4 August 1930	Lebo, US	all-time high max	43.3 C (109.9 F)	0.5 C (0.9 F)	29 years	32 of 100 (Routine)
4 August 1930	Mexico, US	all-time high min	26.1 C (79.0 F)	0.5 C (0.9 F)	29 years	32 of 100 (Routine)
4 August 1930	Mascoutah, US	all-time high min	28.3 C (82.9 F)	1.6 C (2.9 F)	16 years	31 of 100 (Routine)
4 August 1930	Worcester, ZA	monthly rain	44.5 mm (1.8 in)	7.7 mm (0.30 in)	17 years	30 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

1815 to 1930

Records set or tied on this calendar date in each year from 1815 to 1930. 1930 had 698 records.

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

Records on 08-04 in each year
Year	Records
1815	1
1827	1
1830	2
1833	1
1835	1
1843	1
1846	1
1847	1
1848	1
1857	1
1859	2
1860	2
1863	1
1865	3
1867	1
1868	1
1870	1
1871	1
1872	2
1874	3
1875	1
1878	3
1879	1
1881	2
1882	1
1883	1
1885	3
1886	1
1887	3
1888	4
1889	2
1890	1
1891	2
1893	2
1894	1
1895	3
1896	4
1897	3
1898	1
1899	7
1900	6
1902	4
1903	18
1904	11
1905	19
1906	14
1907	20
1908	31
1909	27
1910	17
1911	23
1912	51
1913	15
1914	33
1915	85
1916	97
1917	29
1918	95
1919	34
1920	79
1921	67
1922	68
1923	146
1924	132
1925	77
1926	334
1927	136
1928	352
1929	224
1930	698
1931	371
1932	258
1933	347
1934	521
1935	367
1936	719
1937	258
1938	489
1939	433
1940	236
1941	383
1942	303
1943	468
1944	662
1945	355
1946	265
1947	845
1948	558
1949	421
1950	666
1951	680
1952	465
1953	1,017
1954	426
1955	624
1956	437
1957	343
1958	533
1959	303
1960	331
1961	745
1962	470
1963	438
1964	885
1965	409
1966	552
1967	428
1968	280
1969	638
1970	415
1971	813
1972	773
1973	748
1974	1,040
1975	772
1976	801
1977	599
1978	1,051
1979	510
1980	998
1981	636
1982	703
1983	920
1984	722
1985	634
1986	905
1987	892
1988	1,204
1989	738
1990	1,013
1991	769
1992	754
1993	1,046
1994	1,265
1995	1,117
1996	1,143
1997	891
1998	1,423
1999	762
2000	840
2001	1,087
2002	928
2003	1,309
2004	968
2005	1,246
2006	1,131
2007	685
2008	883
2009	681
2010	1,665
2011	1,536
2012	738
2013	452
2014	980
2015	505
2016	732
2017	1,134
2018	760
2019	499
2020	778
2021	691
2022	1,185
2023	1,150
2024	809
2025	840
2026	1,044

Download the Data

Data for records on 1930-08-04: 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 20	501
20 to 40	4
40 to 60	1
60 to 80	0
80 to 100	1