Weather Records on 30 July 1948

489 weather records were set or tied worldwide on 30 July 1948. Highest significance: Porto Real Do Colegio, BR.

Key Facts for 30 July 1948

On 30 July 1948, 489 weather records were set or tied at long-record stations worldwide.
124 were record highs and 117 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 12 monthly and 474 daily.
Porto Real Do Colegio set a monthly record daily precipitation of 99.0 mm (3.9 in) on 30 July 1948.
Across 168 earlier years (1794 to 2026) the same calendar date averaged 440 records.

Record Map

489 stations

489 station records on 30 July 1948 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 July 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Porto Real Do Colegio	Brazil	Record daily precipitation	99.0 mm (3.9 in)	63 of 100 (Major)
Perth Regional Office	Australia	Record daily precipitation	67.3 mm (2.6 in)	61 of 100 (Major)
Lake Grace Comparison	Australia	Record daily precipitation	32.5 mm (1.3 in)	53 of 100 (Notable)
Erick	United States	Record daily precipitation	71.9 mm (2.8 in)	53 of 100 (Notable)
Narrogin	Australia	Record daily precipitation	43.9 mm (1.7 in)	52 of 100 (Notable)
Kalamunda	Australia	Record daily precipitation	81.0 mm (3.2 in)	50 of 100 (Notable)
Junqueiro	Brazil	Record daily precipitation	105.6 mm (4.2 in)	50 of 100 (Notable)
Cheyyar	India	Record daily precipitation	66.8 mm (2.6 in)	50 of 100 (Notable)
Cuballing	Australia	Record daily precipitation	45.2 mm (1.8 in)	49 of 100 (Notable)
Dumbleyung	Australia	Record daily precipitation	38.1 mm (1.5 in)	49 of 100 (Notable)
Tinkurrin	Australia	Record daily precipitation	32.3 mm (1.3 in)	49 of 100 (Notable)
Nippering	Australia	Record daily precipitation	46.0 mm (1.8 in)	48 of 100 (Notable)
Fort Frances	Canada	Record daily precipitation	52.1 mm (2.1 in)	48 of 100 (Notable)
Kukerin	Australia	Record daily precipitation	28.4 mm (1.1 in)	47 of 100 (Notable)
Bhusaval Sr	India	Record daily precipitation	99.1 mm (3.9 in)	47 of 100 (Notable)
Sitka Magnetic Obsy	United States	Record daily precipitation	76.7 mm (3.0 in)	47 of 100 (Notable)
Nanda Downs	Australia	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Major Isidoro (Sertaozinho)	Brazil	Record daily precipitation	32.4 mm (1.3 in)	45 of 100 (Notable)
Rushy Pool	Australia	Record daily precipitation	41.7 mm (1.6 in)	44 of 100 (Notable)
Cedar Key 1 WSW	United States	Record daily precipitation	176.5 mm (6.9 in)	44 of 100 (Notable)
The Oaks	Australia	Record daily precipitation	35.6 mm (1.4 in)	43 of 100 (Notable)
Cloughton	Australia	Record daily precipitation	43.2 mm (1.7 in)	43 of 100 (Notable)
Traipu	Brazil	Record daily precipitation	88.5 mm (3.5 in)	43 of 100 (Notable)
Durrunook	Australia	Record daily precipitation	30.5 mm (1.2 in)	42 of 100 (Notable)
Nairibin	Australia	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Landscape Hill	Australia	Record daily precipitation	34.3 mm (1.4 in)	42 of 100 (Notable)
Roselea	Australia	Record daily precipitation	28.4 mm (1.1 in)	41 of 100 (Notable)
Dudinin	Australia	Record daily precipitation	34.3 mm (1.4 in)	40 of 100 (Notable)
Kuringup	Australia	Record daily precipitation	26.7 mm (1.1 in)	40 of 100 (Notable)
Moulyinning	Australia	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Tambarmering	Australia	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Nyabing	Australia	Record daily precipitation	34.3 mm (1.4 in)	38 of 100 (Notable)
Redlands	Australia	Record daily precipitation	39.6 mm (1.6 in)	37 of 100 (Notable)
Mundaring	Australia	Record daily precipitation	75.9 mm (3.0 in)	36 of 100 (Notable)
Yallingup	Australia	Record daily precipitation	47.8 mm (1.9 in)	36 of 100 (Notable)
Independence	United States	Record daily precipitation	42.9 mm (1.7 in)	36 of 100 (Notable)
Oakland	Australia	Record daily precipitation	45.2 mm (1.8 in)	35 of 100 (Notable)
Wynrock	Australia	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
Colunio	Australia	Record daily precipitation	31.0 mm (1.2 in)	34 of 100 (Routine)
Churchman Brook	Australia	Record daily precipitation	81.3 mm (3.2 in)	33 of 100 (Routine)
Fremantle	Australia	Record daily precipitation	50.5 mm (2.0 in)	33 of 100 (Routine)
Biddelia	Australia	Record daily precipitation	52.1 mm (2.1 in)	33 of 100 (Routine)
Aldervale	Australia	Record daily precipitation	34.0 mm (1.3 in)	33 of 100 (Routine)
Wilgarrup	Australia	Record daily precipitation	50.0 mm (2.0 in)	33 of 100 (Routine)
Brookton	Australia	Record daily precipitation	35.1 mm (1.4 in)	33 of 100 (Routine)
Orebro	Sweden	Record high maximum temperature	32.0 C (89.6 F)	33 of 100 (Routine)
Allambie	Australia	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Hillcroft	Australia	Record daily precipitation	38.6 mm (1.5 in)	32 of 100 (Routine)
Wickepin	Australia	Record daily precipitation	32.0 mm (1.3 in)	32 of 100 (Routine)
Algonquin Park	Canada	Record daily precipitation	29.2 mm (1.1 in)	32 of 100 (Routine)
Federal Pt	United States	Record daily precipitation	41.9 mm (1.6 in)	32 of 100 (Routine)
Aztec Ruins Nm	United States	Record low minimum temperature	6.1 C (43.0 F)	32 of 100 (Routine)
Chidlow	Australia	Record daily precipitation	69.6 mm (2.7 in)	31 of 100 (Routine)
Pingelly	Australia	Record daily precipitation	34.3 mm (1.4 in)	31 of 100 (Routine)
Wonnaminta	Australia	Record daily precipitation	34.3 mm (1.4 in)	31 of 100 (Routine)
Cleveland 1	United States	Record daily precipitation	59.7 mm (2.4 in)	31 of 100 (Routine)
Moora	Australia	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Lower Chittering	Australia	Record daily precipitation	55.1 mm (2.2 in)	30 of 100 (Routine)
Wray	United States	Record low minimum temperature	8.3 C (46.9 F)	30 of 100 (Routine)
Waycross 4 NE	United States	Record daily precipitation	74.2 mm (2.9 in)	30 of 100 (Routine)

Counts by Type and Timescale

489 records

Records set or tied on 30 July 1948 by type: Highest daily maximum 60, Lowest daily maximum 25, Highest daily minimum 64, Lowest daily minimum 92, Heaviest daily rainfall 248.

Records on 30 July 1948 by type
Record type	Records
Highest daily maximum	60
Lowest daily maximum	25
Highest daily minimum	64
Lowest daily minimum	92
Heaviest daily rainfall	248
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 July 1948 by timescale: all-time 3, monthly 12, daily 474.

How Much Records Were Beaten By

398 broken records

Margins by which the 398 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 111.7. Ties are not counted.

Top 20 by Significance

30 July 1948

Top 20 records on 30 July 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 1948	Porto Real Do Colegio, BR	monthly rain	99.0 mm (3.9 in)	38.7 mm (1.5 in)	34 years	63 of 100 (Major)
30 July 1948	Perth Regional Office, AU	daily rain	67.3 mm (2.6 in)	37.1 mm (1.5 in)	60 years	61 of 100 (Major)
30 July 1948	Lake Grace Comparison, AU	daily rain	32.5 mm (1.3 in)	22.8 mm (0.9 in)	36 years	53 of 100 (Notable)
30 July 1948	Erick, US	daily rain	71.9 mm (2.8 in)	50.1 mm (2.0 in)	30 years	53 of 100 (Notable)
30 July 1948	Narrogin, AU	daily rain	43.9 mm (1.7 in)	32.2 mm (1.3 in)	26 years	52 of 100 (Notable)
30 July 1948	Kalamunda, AU	daily rain	81.0 mm (3.2 in)	51.3 mm (2.0 in)	22 years	50 of 100 (Notable)
30 July 1948	Junqueiro, BR	all-time rain	105.6 mm (4.2 in)	19.2 mm (0.8 in)	18 years	50 of 100 (Notable)
30 July 1948	Cheyyar, IN	daily rain	66.8 mm (2.6 in)	41.9 mm (1.6 in)	28 years	50 of 100 (Notable)
30 July 1948	Cuballing, AU	daily rain	45.2 mm (1.8 in)	28.7 mm (1.1 in)	21 years	49 of 100 (Notable)
30 July 1948	Dumbleyung, AU	daily rain	38.1 mm (1.5 in)	26.7 mm (1.1 in)	22 years	49 of 100 (Notable)
30 July 1948	Tinkurrin, AU	daily rain	32.3 mm (1.3 in)	22.9 mm (0.9 in)	22 years	49 of 100 (Notable)
30 July 1948	Nippering, AU	monthly rain	46.0 mm (1.8 in)	15.5 mm (0.6 in)	20 years	48 of 100 (Notable)
30 July 1948	Fort Frances, CA	daily rain	52.1 mm (2.1 in)	42.7 mm (1.7 in)	20 years	48 of 100 (Notable)
30 July 1948	Kukerin, AU	daily rain	28.4 mm (1.1 in)	19.5 mm (0.8 in)	22 years	47 of 100 (Notable)
30 July 1948	Bhusaval Sr, IN	daily rain	99.1 mm (3.9 in)	65.3 mm (2.6 in)	23 years	47 of 100 (Notable)
30 July 1948	Sitka Magnetic Obsy, US	daily rain	76.7 mm (3.0 in)	59.4 mm (2.3 in)	9 years	47 of 100 (Notable)
30 July 1948	Nanda Downs, AU	daily rain	25.4 mm (1.0 in)	16.0 mm (0.6 in)	22 years	45 of 100 (Notable)
30 July 1948	Major Isidoro (Sertaozinho), BR	daily rain	32.4 mm (1.3 in)	17.2 mm (0.7 in)	30 years	45 of 100 (Notable)
30 July 1948	Rushy Pool, AU	daily rain	41.7 mm (1.6 in)	30.8 mm (1.2 in)	6 years	44 of 100 (Notable)
30 July 1948	Cedar Key 1 WSW, US	daily rain	176.5 mm (6.9 in)	111.7 mm (4.4 in)	2 years	44 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

1794 to 1948

Records set or tied on this calendar date in each year from 1794 to 1948. 1948 had 489 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 1948-07-30: 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 20	346
20 to 40	41
40 to 60	7
60 to 80	2
80 to 100	0
100 to 120	2