Weather Records on 30 July 1930

170 weather records were set or tied worldwide on 30 July 1930. Highest significance: Biser, RU.

Key Facts for 30 July 1930

On 30 July 1930, 170 weather records were set or tied at long-record stations worldwide.
148 were record highs and 11 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 6 monthly and 160 daily.
Biser set a daily record precipitation of 48.0 mm (1.9 in) on 30 July 1930.
Across 168 earlier years (1794 to 2026) the same calendar date averaged 442 records.

Record Map

170 stations

170 station records on 30 July 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 July 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Biser	Russia	Record daily precipitation	48.0 mm (1.9 in)	49 of 100 (Notable)
San Diego Wbo	United States	Record high maximum temperature	37.8 C (100.0 F)	40 of 100 (Notable)
Sviland	Norway	Record daily precipitation	69.4 mm (2.7 in)	39 of 100 (Notable)
Camden 1	United States	Record high maximum temperature	43.9 C (111.0 F)	37 of 100 (Notable)
Jennings	United States	Record daily precipitation	56.9 mm (2.2 in)	35 of 100 (Notable)
Heber	United States	Record high minimum temperature	19.4 C (66.9 F)	29 of 100 (Routine)
Ozark	United States	Record high maximum temperature	45.0 C (113.0 F)	27 of 100 (Routine)
Sewanee	United States	Record high maximum temperature	39.4 C (102.9 F)	27 of 100 (Routine)
State UNIV	United States	Record high maximum temperature	41.7 C (107.1 F)	26 of 100 (Routine)
Little Rock St Capitol	United States	Record high minimum temperature	27.2 C (81.0 F)	25 of 100 (Routine)
Santa Maria	United States	Record high maximum temperature	39.4 C (102.9 F)	25 of 100 (Routine)
Zagreb-Gric	Croatia	Record daily precipitation	36.0 mm (1.4 in)	24 of 100 (Routine)
Mena	United States	Record high minimum temperature	27.2 C (81.0 F)	24 of 100 (Routine)
Pine Bluff	United States	Record high minimum temperature	27.2 C (81.0 F)	24 of 100 (Routine)
Malvern	United States	Record high minimum temperature	27.8 C (82.0 F)	21 of 100 (Routine)
Santa Barbara	United States	Record high maximum temperature	37.2 C (99.0 F)	21 of 100 (Routine)
Minden	United States	Record high maximum temperature	41.1 C (106.0 F)	21 of 100 (Routine)
Hot Springs	United States	Record high maximum temperature	33.9 C (93.0 F)	21 of 100 (Routine)
Jackson 4 NW	United States	Record high maximum temperature	40.0 C (104.0 F)	21 of 100 (Routine)
Big Creek	Canada	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Subiaco	United States	Record high maximum temperature	43.3 C (109.9 F)	20 of 100 (Routine)
Crescent City 3 NNW	United States	Record high maximum temperature	29.4 C (84.9 F)	20 of 100 (Routine)
Calhoun 2 N	United States	Record high maximum temperature	41.1 C (106.0 F)	20 of 100 (Routine)
Kosciusko	United States	Record high maximum temperature	40.6 C (105.1 F)	19 of 100 (Routine)
Port Gibson 1 NE	United States	Record high maximum temperature	39.4 C (102.9 F)	19 of 100 (Routine)
Hollister 1 SW	United States	Record high maximum temperature	36.7 C (98.1 F)	18 of 100 (Routine)
Imperial	United States	Record low minimum temperature	10.0 C (50.0 F)	18 of 100 (Routine)
Southport 5 N	United States	Record high maximum temperature	33.3 C (91.9 F)	18 of 100 (Routine)
Laghouat	Algeria	Record high minimum temperature	27.0 C (80.6 F)	17 of 100 (Routine)
Orenburg	Russia	Record daily precipitation	6.1 mm (0.24 in)	17 of 100 (Routine)
Clanton	United States	Record high maximum temperature	39.4 C (102.9 F)	17 of 100 (Routine)
Scottsboro	United States	Record high maximum temperature	38.9 C (102.0 F)	17 of 100 (Routine)
Mena	United States	Record high maximum temperature	40.6 C (105.1 F)	17 of 100 (Routine)
Louisville	United States	Record high maximum temperature	38.9 C (102.0 F)	17 of 100 (Routine)
Wetumpka	United States	Record high maximum temperature	40.6 C (105.1 F)	16 of 100 (Routine)
Prescott 2 NNW	United States	Record high maximum temperature	41.7 C (107.1 F)	16 of 100 (Routine)
Alexandria	United States	Record high maximum temperature	40.0 C (104.0 F)	16 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	41.1 C (106.0 F)	16 of 100 (Routine)
Louisville	United States	Record high minimum temperature	23.3 C (73.9 F)	16 of 100 (Routine)
Pontotoc	United States	Record high maximum temperature	40.0 C (104.0 F)	16 of 100 (Routine)
Koshkonong	United States	Record high minimum temperature	25.6 C (78.1 F)	16 of 100 (Routine)
Savannah 6 SW	United States	Record high maximum temperature	37.8 C (100.0 F)	16 of 100 (Routine)
Oracle	United States	Record low minimum temperature	15.6 C (60.1 F)	15 of 100 (Routine)
El Cajon 2 E	United States	Record high maximum temperature	40.0 C (104.0 F)	15 of 100 (Routine)
Deland 1 SSE	United States	Record high minimum temperature	23.9 C (75.0 F)	15 of 100 (Routine)
Federal Pt	United States	Record high minimum temperature	26.1 C (79.0 F)	15 of 100 (Routine)
Ocala	United States	Record high maximum temperature	36.1 C (97.0 F)	15 of 100 (Routine)
Plain Dealing	United States	Record high maximum temperature	41.7 C (107.1 F)	15 of 100 (Routine)
Canton 4N	United States	Record high maximum temperature	37.8 C (100.0 F)	15 of 100 (Routine)
Highlands	United States	Record high maximum temperature	33.3 C (91.9 F)	15 of 100 (Routine)
Highlands	United States	Record high minimum temperature	17.8 C (64.0 F)	15 of 100 (Routine)
Romney 1 SW	United States	Record high maximum temperature	39.4 C (102.9 F)	15 of 100 (Routine)
Warren 2 ENE	United States	Record high minimum temperature	27.2 C (81.0 F)	14 of 100 (Routine)
Middlesboro Fire Dept	United States	Record high maximum temperature	37.8 C (100.0 F)	14 of 100 (Routine)
Emmitsburg	United States	Record high maximum temperature	36.1 C (97.0 F)	14 of 100 (Routine)
Duck Hill	United States	Record high maximum temperature	39.4 C (102.9 F)	14 of 100 (Routine)
Alma	United States	Record daily precipitation	28.7 mm (1.1 in)	14 of 100 (Routine)
Carthage	United States	Record high maximum temperature	39.4 C (102.9 F)	14 of 100 (Routine)
Milan Exp STN	United States	Record high maximum temperature	37.8 C (100.0 F)	14 of 100 (Routine)
Kaufman 3 SE	United States	Record high maximum temperature	42.2 C (108.0 F)	14 of 100 (Routine)

Counts by Type and Timescale

170 records

Records set or tied on 30 July 1930 by type: Highest daily maximum 99, Lowest daily maximum 4, Highest daily minimum 49, Lowest daily minimum 7, Heaviest daily rainfall 11.

Records on 30 July 1930 by type
Record type	Records
Highest daily maximum	99
Lowest daily maximum	4
Highest daily minimum	49
Lowest daily minimum	7
Heaviest daily rainfall	11
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 July 1930 by timescale: all-time 4, monthly 6, daily 160.

How Much Records Were Beaten By

119 broken records

Margins by which the 119 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 48.8. Ties are not counted.

Top 20 by Significance

30 July 1930

Top 20 records on 30 July 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 1930	Biser, RU	daily rain	48.0 mm (1.9 in)	23.2 mm (0.9 in)	39 years	49 of 100 (Notable)
30 July 1930	San Diego Wbo, US	monthly high max	37.8 C (100.0 F)	3.9 C (7.0 F)	19 years	40 of 100 (Notable)
30 July 1930	Sviland, NO	monthly rain	69.4 mm (2.7 in)	21.5 mm (0.8 in)	6 years	39 of 100 (Notable)
30 July 1930	Camden 1, US	all-time high max	43.9 C (111.0 F)	1.1 C (2.0 F)	33 years	37 of 100 (Notable)
30 July 1930	Jennings, US	daily rain	56.9 mm (2.2 in)	48.8 mm (1.9 in)	0 years	35 of 100 (Notable)
30 July 1930	Heber, US	all-time high min	19.4 C (66.9 F)	1.1 C (2.0 F)	10 years	29 of 100 (Routine)
30 July 1930	Ozark, US	monthly high max	45.0 C (113.0 F)	2.2 C (4.0 F)	29 years	27 of 100 (Routine)
30 July 1930	Sewanee, US	all-time high max	39.4 C (102.9 F)	1.1 C (2.0 F)	0 years	27 of 100 (Routine)
30 July 1930	State UNIV, US	daily high max	41.7 C (107.1 F)	3.9 C (7.0 F)	28 years	26 of 100 (Routine)
30 July 1930	Little Rock St Capitol, US	daily high min	27.2 C (81.0 F)	1.6 C (2.9 F)	44 years	25 of 100 (Routine)
30 July 1930	Santa Maria, US	monthly high max	39.4 C (102.9 F)	2.7 C (4.9 F)	11 years	25 of 100 (Routine)
30 July 1930	Zagreb-Gric, HR	daily rain	36.0 mm (1.4 in)	6.6 mm (0.26 in)	36 years	24 of 100 (Routine)
30 July 1930	Mena, US	daily high min	27.2 C (81.0 F)	2.8 C (5.0 F)	31 years	24 of 100 (Routine)
30 July 1930	Pine Bluff, US	daily high min	27.2 C (81.0 F)	1.6 C (2.9 F)	43 years	24 of 100 (Routine)
30 July 1930	Malvern, US	daily high min	27.8 C (82.0 F)	1.1 C (2.0 F)	43 years	21 of 100 (Routine)
30 July 1930	Santa Barbara, US	daily high max	37.2 C (99.0 F)	5.0 C (9.0 F)	9 years	21 of 100 (Routine)
30 July 1930	Minden, US	daily high max	41.1 C (106.0 F)	2.2 C (4.0 F)	33 years	21 of 100 (Routine)
30 July 1930	Hot Springs, US	daily high max	33.9 C (93.0 F)	2.8 C (5.0 F)	28 years	21 of 100 (Routine)
30 July 1930	Jackson 4 NW, US	daily high max	40.0 C (104.0 F)	2.2 C (4.0 F)	33 years	21 of 100 (Routine)
30 July 1930	Big Creek, CA	daily rain	18.0 mm (0.7 in)	14.4 mm (0.6 in)	5 years	20 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

1794 to 1930

Records set or tied on this calendar date in each year from 1794 to 1930. 1930 had 170 records.

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

Records on 07-30 in each year
Year	Records
1794	2
1797	1
1827	1
1828	2
1829	1
1830	1
1834	1
1837	2
1838	1
1840	1
1841	1
1843	1
1854	1
1857	1
1858	2
1860	4
1863	1
1867	1
1868	1
1869	2
1870	1
1874	2
1875	1
1876	1
1877	2
1879	1
1880	2
1885	3
1886	5
1887	6
1888	5
1889	1
1890	2
1891	1
1892	1
1893	10
1894	6
1895	2
1896	2
1897	4
1898	8
1899	2
1900	4
1901	11
1902	6
1903	25
1904	17
1905	29
1906	22
1907	11
1908	23
1909	30
1910	8
1911	54
1912	21
1913	34
1914	52
1915	26
1916	150
1917	93
1918	42
1919	19
1920	188
1921	193
1922	40
1923	428
1924	80
1925	275
1926	186
1927	109
1928	210
1929	221
1930	170
1931	432
1932	275
1933	451
1934	619
1935	340
1936	452
1937	245
1938	388
1939	395
1940	562
1941	371
1942	304
1943	397
1944	289
1945	299
1946	409
1947	394
1948	489
1949	512
1950	552
1951	322
1952	581
1953	345
1954	504
1955	787
1956	506
1957	289
1958	344
1959	391
1960	793
1961	511
1962	378
1963	308
1964	483
1965	978
1966	527
1967	282
1968	530
1969	506
1970	431
1971	2,319
1972	758
1973	434
1974	569
1975	1,048
1976	590
1977	641
1978	646
1979	761
1980	962
1981	851
1982	821
1983	904
1984	997
1985	1,029
1986	952
1987	1,084
1988	826
1989	1,227
1990	795
1991	734
1992	1,003
1993	965
1994	1,631
1995	1,207
1996	1,317
1997	933
1998	1,240
1999	1,456
2000	1,030
2001	1,400
2002	1,346
2003	1,163
2004	936
2005	788
2006	1,103
2007	1,160
2008	763
2009	1,328
2010	1,331
2011	1,003
2012	731
2013	737
2014	1,199
2015	682
2016	460
2017	464
2018	1,038
2019	486
2020	763
2021	839
2022	845
2023	683
2024	705
2025	869
2026	1,001

Download the Data

Data for records on 1930-07-30: 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 10	115
10 to 20	1
20 to 30	2
30 to 40	0
40 to 50	1