Weather Records on 30 July 1974

569 weather records were set or tied worldwide on 30 July 1974. Highest significance: Lankaran, AZ.

Key Facts for 30 July 1974

On 30 July 1974, 569 weather records were set or tied at long-record stations worldwide.
133 were record highs and 148 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 8 monthly and 558 daily.
Lankaran set a daily record precipitation of 59.3 mm (2.3 in) on 30 July 1974.
Across 168 earlier years (1794 to 2026) the same calendar date averaged 439 records.

Record Map

569 stations

569 station records on 30 July 1974 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 July 1974: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lankaran	Azerbaijan	Record daily precipitation	59.3 mm (2.3 in)	64 of 100 (Major)
Orogrande	United States	Record daily precipitation	78.2 mm (3.1 in)	61 of 100 (Major)
La Tuque	Canada	Record daily precipitation	72.9 mm (2.9 in)	58 of 100 (Notable)
Gardabani	Georgia	Record daily precipitation	75.6 mm (3.0 in)	56 of 100 (Notable)
Mana 1026	United States	Record daily precipitation	40.9 mm (1.6 in)	52 of 100 (Notable)
Northville	United States	Record daily precipitation	41.7 mm (1.6 in)	51 of 100 (Notable)
Chute Hemmings	Canada	Record daily precipitation	60.5 mm (2.4 in)	48 of 100 (Notable)
Kolpasevo	Russia	Record daily precipitation	40.8 mm (1.6 in)	46 of 100 (Notable)
Las Vegas 2 NW	United States	Record low minimum temperature	2.8 C (37.0 F)	46 of 100 (Notable)
Bennetts Brg	United States	Record daily precipitation	65.5 mm (2.6 in)	46 of 100 (Notable)
St Fereol	Canada	Record daily precipitation	72.4 mm (2.9 in)	45 of 100 (Notable)
Myponga	Australia	Record daily precipitation	42.0 mm (1.7 in)	44 of 100 (Notable)
Drummondville	Canada	Record daily precipitation	59.9 mm (2.4 in)	42 of 100 (Notable)
Greer	United States	Record daily precipitation	39.4 mm (1.6 in)	42 of 100 (Notable)
Lock (Ninamanima)	Australia	Record daily precipitation	28.0 mm (1.1 in)	41 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	10.4 C (50.7 F)	41 of 100 (Notable)
Aragac Visokogornaya	Armenia	Record high maximum temperature	22.1 C (71.8 F)	40 of 100 (Notable)
Jornada Exp Range	United States	Record daily precipitation	28.4 mm (1.1 in)	40 of 100 (Notable)
Clarke City	Canada	Record daily precipitation	45.2 mm (1.8 in)	39 of 100 (Notable)
Mandora	Australia	Record daily precipitation	25.0 mm (1.0 in)	37 of 100 (Notable)
Canton 4 SE	United States	Record daily precipitation	32.8 mm (1.3 in)	37 of 100 (Notable)
Bolivar	United States	Record daily precipitation	25.7 mm (1.0 in)	36 of 100 (Notable)
Niu Ridge 1035	United States	Record daily precipitation	29.0 mm (1.1 in)	36 of 100 (Notable)
Shaki	Azerbaijan	Record daily precipitation	46.9 mm (1.8 in)	35 of 100 (Notable)
Tenerife/Los Rodeos	Spain	Record high minimum temperature	22.4 C (72.3 F)	35 of 100 (Notable)
Canajoharie	United States	Record daily precipitation	46.5 mm (1.8 in)	35 of 100 (Notable)
Smiths Basin	United States	Record daily precipitation	63.8 mm (2.5 in)	35 of 100 (Notable)
Cuitzeo	Mexico	Record daily precipitation	33.5 mm (1.3 in)	34 of 100 (Routine)
Ust-Kara	Russia	Record daily precipitation	85.0 mm (3.3 in)	34 of 100 (Routine)
Martinsdale 3 NNW	United States	Record high minimum temperature	13.3 C (55.9 F)	33 of 100 (Routine)
Portales	United States	Record low minimum temperature	11.1 C (52.0 F)	33 of 100 (Routine)
Newark	United States	Record daily precipitation	36.3 mm (1.4 in)	33 of 100 (Routine)
Vermillion 2 SE	United States	Record low minimum temperature	8.3 C (46.9 F)	33 of 100 (Routine)
McAllen	United States	Record low minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Lexington	United States	Record daily precipitation	58.7 mm (2.3 in)	33 of 100 (Routine)
Troitsk	Russia	Record daily precipitation	25.7 mm (1.0 in)	31 of 100 (Routine)
Lewiston	United States	Record low maximum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Ganca	Azerbaijan	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Kayenta	United States	Record low minimum temperature	2.8 C (37.0 F)	29 of 100 (Routine)
Tribes Hill	United States	Record daily precipitation	40.4 mm (1.6 in)	29 of 100 (Routine)
Lewistown	United States	Record daily precipitation	63.5 mm (2.5 in)	29 of 100 (Routine)
State College	United States	Record daily precipitation	55.4 mm (2.2 in)	29 of 100 (Routine)
Mammoth Spring	United States	Record low minimum temperature	11.7 C (53.1 F)	28 of 100 (Routine)
Hobbs	United States	Record low maximum temperature	28.9 C (84.0 F)	28 of 100 (Routine)
Gouverneur 3 NW	United States	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Bruceton 1 S	United States	Record daily precipitation	41.9 mm (1.6 in)	28 of 100 (Routine)
Alcove Dam	United States	Record daily precipitation	47.0 mm (1.9 in)	27 of 100 (Routine)
Mansfield 5 W	United States	Record daily precipitation	74.9 mm (2.9 in)	27 of 100 (Routine)
Menard	United States	Record low maximum temperature	27.2 C (81.0 F)	27 of 100 (Routine)
Wapato	United States	Record high minimum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Gardiner	United States	Record low maximum temperature	18.9 C (66.0 F)	26 of 100 (Routine)
Broadview	United States	Record high minimum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Hope	United States	Record daily precipitation	52.1 mm (2.1 in)	26 of 100 (Routine)
New Lexington 2 NW	United States	Record daily precipitation	34.0 mm (1.3 in)	26 of 100 (Routine)
Brady	United States	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Cut Bank AP	United States	Record high minimum temperature	16.1 C (61.0 F)	26 of 100 (Routine)
Helena AP ASOS	United States	Record high minimum temperature	17.8 C (64.0 F)	26 of 100 (Routine)
Apatzingan (Smn)	Mexico	Record high minimum temperature	26.7 C (80.1 F)	25 of 100 (Routine)
Redding Fire STN 2	United States	Record high maximum temperature	43.3 C (109.9 F)	25 of 100 (Routine)
Augusta	United States	Record high minimum temperature	15.6 C (60.1 F)	25 of 100 (Routine)

Counts by Type and Timescale

569 records

Records set or tied on 30 July 1974 by type: Highest daily maximum 43, Lowest daily maximum 68, Highest daily minimum 90, Lowest daily minimum 80, Heaviest daily rainfall 287, Deepest snow cover 1.

Records on 30 July 1974 by type
Record type	Records
Highest daily maximum	43
Lowest daily maximum	68
Highest daily minimum	90
Lowest daily minimum	80
Heaviest daily rainfall	287
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 30 July 1974 by timescale: all-time 3, monthly 8, daily 558.

How Much Records Were Beaten By

456 broken records

Margins by which the 456 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 635.0. Ties are not counted.

Top 20 by Significance

30 July 1974

Top 20 records on 30 July 1974 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 1974	Lankaran, AZ	daily rain	59.3 mm (2.3 in)	44.4 mm (1.7 in)	57 years	64 of 100 (Major)
30 July 1974	Orogrande, US	daily rain	78.2 mm (3.1 in)	50.8 mm (2.0 in)	48 years	61 of 100 (Major)
30 July 1974	La Tuque, CA	daily rain	72.9 mm (2.9 in)	36.3 mm (1.4 in)	56 years	58 of 100 (Notable)
30 July 1974	Gardabani, GE	monthly rain	75.6 mm (3.0 in)	32.7 mm (1.3 in)	11 years	56 of 100 (Notable)
30 July 1974	Mana 1026, US	daily rain	40.9 mm (1.6 in)	37.9 mm (1.5 in)	19 years	52 of 100 (Notable)
30 July 1974	Northville, US	daily rain	41.7 mm (1.6 in)	27.0 mm (1.1 in)	68 years	51 of 100 (Notable)
30 July 1974	Chute Hemmings, CA	daily rain	60.5 mm (2.4 in)	44.5 mm (1.8 in)	13 years	48 of 100 (Notable)
30 July 1974	Kolpasevo, RU	daily rain	40.8 mm (1.6 in)	28.1 mm (1.1 in)	13 years	46 of 100 (Notable)
30 July 1974	Las Vegas 2 NW, US	monthly low min	2.8 C (37.0 F)	1.6 C (2.9 F)	71 years	46 of 100 (Notable)
30 July 1974	Bennetts Brg, US	daily rain	65.5 mm (2.6 in)	47.7 mm (1.9 in)	11 years	46 of 100 (Notable)
30 July 1974	St Fereol, CA	daily rain	72.4 mm (2.9 in)	43.2 mm (1.7 in)	13 years	45 of 100 (Notable)
30 July 1974	Myponga, AU	daily rain	42.0 mm (1.7 in)	16.6 mm (0.7 in)	52 years	44 of 100 (Notable)
30 July 1974	Drummondville, CA	daily rain	59.9 mm (2.4 in)	37.0 mm (1.5 in)	20 years	42 of 100 (Notable)
30 July 1974	Greer, US	daily rain	39.4 mm (1.6 in)	21.4 mm (0.8 in)	21 years	42 of 100 (Notable)
30 July 1974	Lock (Ninamanima), AU	daily rain	28.0 mm (1.1 in)	16.6 mm (0.7 in)	21 years	41 of 100 (Notable)
30 July 1974	Col du Grand St-Bernard, CH	daily high min	10.4 C (50.7 F)	0.4 C (0.7 F)	100 years	41 of 100 (Notable)
30 July 1974	Aragac Visokogornaya, AM	all-time high max	22.1 C (71.8 F)	1.6 C (2.9 F)	38 years	40 of 100 (Notable)
30 July 1974	Jornada Exp Range, US	daily rain	28.4 mm (1.1 in)	16.2 mm (0.6 in)	48 years	40 of 100 (Notable)
30 July 1974	Clarke City, CA	daily rain	45.2 mm (1.8 in)	21.8 mm (0.9 in)	33 years	39 of 100 (Notable)
30 July 1974	Mandora, AU	daily rain	25.0 mm (1.0 in)	16.4 mm (0.6 in)	60 years	37 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 1974

Records set or tied on this calendar date in each year from 1794 to 1974. 1974 had 569 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 1974-07-30: 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 100	455
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	0
600 to 700	1