Weather Records on 30 July 1973

434 weather records were set or tied worldwide on 30 July 1973. Highest significance: Bowie, US.

Key Facts for 30 July 1973

On 30 July 1973, 434 weather records were set or tied at long-record stations worldwide.
101 were record highs and 118 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 7 monthly and 425 daily.
Bowie set a monthly record daily precipitation of 147.6 mm (5.8 in) on 30 July 1973.
Across 168 earlier years (1794 to 2026) the same calendar date averaged 440 records.

Record Map

434 stations

434 station records on 30 July 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 July 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bowie	United States	Record daily precipitation	147.6 mm (5.8 in)	76 of 100 (Major)
Ust Tzilma	Russia	Record daily precipitation	52.1 mm (2.1 in)	71 of 100 (Major)
Brinkworth (Anama Park)	Australia	Record daily precipitation	25.4 mm (1.0 in)	61 of 100 (Major)
Meruoca	Brazil	Record daily precipitation	34.8 mm (1.4 in)	60 of 100 (Major)
Chattanooga	United States	Record daily precipitation	135.9 mm (5.4 in)	59 of 100 (Notable)
Faribault	United States	Record daily precipitation	79.8 mm (3.1 in)	57 of 100 (Notable)
Malvern	United States	Record daily precipitation	118.9 mm (4.7 in)	50 of 100 (Notable)
Bloomington Normal	United States	Record daily precipitation	41.1 mm (1.6 in)	48 of 100 (Notable)
Pocinhos (Joffily)	Brazil	Record daily precipitation	26.4 mm (1.0 in)	46 of 100 (Notable)
Progresso	United States	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
Mount Dutton	Australia	Record daily precipitation	27.2 mm (1.1 in)	45 of 100 (Notable)
Winona	United States	Record daily precipitation	47.5 mm (1.9 in)	45 of 100 (Notable)
Alpena Co Rgnl AP	United States	Record daily precipitation	60.5 mm (2.4 in)	45 of 100 (Notable)
Bradford	United Kingdom	Record daily precipitation	25.1 mm (1.0 in)	44 of 100 (Notable)
Tipton 4S Mesonet	United States	Record daily precipitation	62.2 mm (2.4 in)	44 of 100 (Notable)
Rocksprings	United States	Record daily precipitation	67.3 mm (2.6 in)	44 of 100 (Notable)
Forestburg 5 S	United States	Record daily precipitation	42.7 mm (1.7 in)	43 of 100 (Notable)
McNary 2N	United States	Record daily precipitation	38.6 mm (1.5 in)	41 of 100 (Notable)
Quincy Mem Brg	United States	Record daily precipitation	48.8 mm (1.9 in)	39 of 100 (Notable)
Junction 4SSW	United States	Record daily precipitation	44.5 mm (1.8 in)	39 of 100 (Notable)
Denison	United States	Record daily precipitation	49.5 mm (1.9 in)	38 of 100 (Notable)
Balmorhea	United States	Record daily precipitation	28.7 mm (1.1 in)	38 of 100 (Notable)
Barrage Temiscamingue	Canada	Record daily precipitation	27.4 mm (1.1 in)	36 of 100 (Notable)
Cuautla (Smn)	Mexico	Record daily precipitation	54.9 mm (2.2 in)	36 of 100 (Notable)
Kayenta	United States	Record low maximum temperature	18.3 C (64.9 F)	36 of 100 (Notable)
Jemez Springs	United States	Record low minimum temperature	8.3 C (46.9 F)	36 of 100 (Notable)
Thurber 5 NE	United States	Record daily precipitation	71.6 mm (2.8 in)	36 of 100 (Notable)
Jacksonville 2E	United States	Record daily precipitation	42.9 mm (1.7 in)	35 of 100 (Notable)
Possum Kingdom Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Mackinaw 3WSW	United States	Record daily precipitation	63.5 mm (2.5 in)	34 of 100 (Routine)
Ada	United States	Record daily precipitation	39.6 mm (1.6 in)	34 of 100 (Routine)
Grandfield 4 NW	United States	Record daily precipitation	87.6 mm (3.4 in)	34 of 100 (Routine)
Irgiz	Kazakhstan	Record high minimum temperature	27.6 C (81.7 F)	33 of 100 (Routine)
Ignacio Allende	Mexico	Record daily precipitation	41.9 mm (1.6 in)	33 of 100 (Routine)
Colorado City	United States	Record low maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Graham	United States	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Coniston	Canada	Record daily precipitation	39.6 mm (1.6 in)	32 of 100 (Routine)
Karsakpaj	Kazakhstan	Record high minimum temperature	26.0 C (78.8 F)	32 of 100 (Routine)
Privolskaya	Russia	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Gainesville	United States	Record low maximum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Muenster	United States	Record daily precipitation	57.9 mm (2.3 in)	32 of 100 (Routine)
Vernon	United States	Record daily precipitation	55.9 mm (2.2 in)	32 of 100 (Routine)
Juchitan de Zaragoza	Mexico	Record high maximum temperature	40.6 C (105.1 F)	31 of 100 (Routine)
Farnsworth Rch	United States	Record daily precipitation	38.4 mm (1.5 in)	31 of 100 (Routine)
Tishomingo Natl Wr	United States	Record low maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Zinapecuaro	Mexico	Record daily precipitation	46.5 mm (1.8 in)	30 of 100 (Routine)
Norwood	United States	Record low minimum temperature	3.3 C (37.9 F)	30 of 100 (Routine)
Durant	United States	Record low maximum temperature	24.4 C (75.9 F)	30 of 100 (Routine)
Jacksboro	United States	Record daily precipitation	57.9 mm (2.3 in)	30 of 100 (Routine)
Quanah 2 SW	United States	Record low maximum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
Rotan	United States	Record daily precipitation	53.8 mm (2.1 in)	30 of 100 (Routine)
Francisco I. Madero	Mexico	Record daily precipitation	63.8 mm (2.5 in)	29 of 100 (Routine)
San Juan del Rio	Mexico	Record daily precipitation	39.9 mm (1.6 in)	29 of 100 (Routine)
Corning	United States	Record daily precipitation	49.5 mm (1.9 in)	29 of 100 (Routine)
Atoka	United States	Record low maximum temperature	25.0 C (77.0 F)	29 of 100 (Routine)
Galesville 2WSW	United States	Record daily precipitation	58.9 mm (2.3 in)	29 of 100 (Routine)
Ungowa Forest Station	Australia	Record daily precipitation	36.8 mm (1.4 in)	28 of 100 (Routine)
Cheesman	United States	Record low maximum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Del Norte 3ENE	United States	Record low maximum temperature	19.4 C (66.9 F)	28 of 100 (Routine)
Brewster 4W	United States	Record daily precipitation	42.2 mm (1.7 in)	28 of 100 (Routine)

Counts by Type and Timescale

434 records

Records set or tied on 30 July 1973 by type: Highest daily maximum 49, Lowest daily maximum 83, Highest daily minimum 52, Lowest daily minimum 35, Heaviest daily rainfall 215.

Records on 30 July 1973 by type
Record type	Records
Highest daily maximum	49
Lowest daily maximum	83
Highest daily minimum	52
Lowest daily minimum	35
Heaviest daily rainfall	215
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 July 1973 by timescale: all-time 2, monthly 7, daily 425.

How Much Records Were Beaten By

364 broken records

Margins by which the 364 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 64.8. Ties are not counted.

Top 20 by Significance

30 July 1973

Top 20 records on 30 July 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 1973	Bowie, US	monthly rain	147.6 mm (5.8 in)	55.9 mm (2.2 in)	65 years	76 of 100 (Major)
30 July 1973	Ust Tzilma, RU	daily rain	52.1 mm (2.1 in)	24.6 mm (1.0 in)	76 years	71 of 100 (Major)
30 July 1973	Brinkworth (Anama Park), AU	daily rain	25.4 mm (1.0 in)	12.4 mm (0.5 in)	82 years	61 of 100 (Major)
30 July 1973	Meruoca, BR	daily rain	34.8 mm (1.4 in)	31.3 mm (1.2 in)	55 years	60 of 100 (Major)
30 July 1973	Chattanooga, US	daily rain	135.9 mm (5.4 in)	64.8 mm (2.6 in)	48 years	59 of 100 (Notable)
30 July 1973	Faribault, US	daily rain	79.8 mm (3.1 in)	60.7 mm (2.4 in)	35 years	57 of 100 (Notable)
30 July 1973	Malvern, US	daily rain	118.9 mm (4.7 in)	58.4 mm (2.3 in)	16 years	50 of 100 (Notable)
30 July 1973	Bloomington Normal, US	daily rain	41.1 mm (1.6 in)	32.7 mm (1.3 in)	51 years	48 of 100 (Notable)
30 July 1973	Pocinhos (Joffily), BR	daily rain	26.4 mm (1.0 in)	20.3 mm (0.8 in)	4 years	46 of 100 (Notable)
30 July 1973	Progresso, US	daily rain	41.9 mm (1.6 in)	26.2 mm (1.0 in)	36 years	46 of 100 (Notable)
30 July 1973	Mount Dutton, AU	daily rain	27.2 mm (1.1 in)	27.2 mm (1.1 in)	43 years	45 of 100 (Notable)
30 July 1973	Winona, US	daily rain	47.5 mm (1.9 in)	20.8 mm (0.8 in)	71 years	45 of 100 (Notable)
30 July 1973	Alpena Co Rgnl AP, US	daily rain	60.5 mm (2.4 in)	27.7 mm (1.1 in)	39 years	45 of 100 (Notable)
30 July 1973	Bradford, GB	daily rain	25.1 mm (1.0 in)	15.3 mm (0.6 in)	50 years	44 of 100 (Notable)
30 July 1973	Tipton 4S Mesonet, US	daily rain	62.2 mm (2.4 in)	57.4 mm (2.3 in)	7 years	44 of 100 (Notable)
30 July 1973	Rocksprings, US	daily rain	67.3 mm (2.6 in)	60.7 mm (2.4 in)	0 years	44 of 100 (Notable)
30 July 1973	Forestburg 5 S, US	daily rain	42.7 mm (1.7 in)	24.9 mm (1.0 in)	72 years	43 of 100 (Notable)
30 July 1973	McNary 2N, US	daily rain	38.6 mm (1.5 in)	21.1 mm (0.8 in)	20 years	41 of 100 (Notable)
30 July 1973	Quincy Mem Brg, US	daily rain	48.8 mm (1.9 in)	26.7 mm (1.1 in)	51 years	39 of 100 (Notable)
30 July 1973	Junction 4SSW, US	daily rain	44.5 mm (1.8 in)	19.9 mm (0.8 in)	71 years	39 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 1973

Records set or tied on this calendar date in each year from 1794 to 1973. 1973 had 434 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 1973-07-30: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 10	281
10 to 20	41
20 to 30	25
30 to 40	8
40 to 50	2
50 to 60	3
60 to 70	4