Weather Records on 30 July 1978

646 weather records were set or tied worldwide on 30 July 1978. Highest significance: Saint-Germain-Les-Belles, FR.

Key Facts for 30 July 1978

On 30 July 1978, 646 weather records were set or tied at long-record stations worldwide.
239 were record highs and 264 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 11 monthly and 634 daily.
Saint-Germain-Les-Belles set a daily record precipitation of 60.5 mm (2.4 in) on 30 July 1978.
Across 168 earlier years (1794 to 2026) the same calendar date averaged 439 records.

Record Map

646 stations

646 station records on 30 July 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 July 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Saint-Germain-Les-Belles	France	Record daily precipitation	60.5 mm (2.4 in)	57 of 100 (Notable)
Pana	United States	Record daily precipitation	50.8 mm (2.0 in)	52 of 100 (Notable)
Enisejsk	Russia	Record daily precipitation	46.2 mm (1.8 in)	49 of 100 (Notable)
Umari	Brazil	Record daily precipitation	45.3 mm (1.8 in)	48 of 100 (Notable)
Mont-de-Marsan	France	Record daily precipitation	42.5 mm (1.7 in)	48 of 100 (Notable)
San Luis de la Paz	Mexico	Record daily precipitation	59.9 mm (2.4 in)	47 of 100 (Notable)
Pascagoula 3 NE	United States	Record low maximum temperature	23.3 C (73.9 F)	47 of 100 (Notable)
Coloso	Puerto Rico [United States]	Record low maximum temperature	28.9 C (84.0 F)	45 of 100 (Notable)
Ste Marie (River)	United States	Record daily precipitation	69.3 mm (2.7 in)	45 of 100 (Notable)
Pascagoula 3 NE	United States	Record low minimum temperature	16.7 C (62.1 F)	45 of 100 (Notable)
Lexington Bluegrass AP	United States	Record daily precipitation	109.2 mm (4.3 in)	43 of 100 (Notable)
Arteaga (Smn)	Mexico	Record daily precipitation	177.8 mm (7.0 in)	42 of 100 (Notable)
Elliston	United States	Record daily precipitation	44.5 mm (1.8 in)	42 of 100 (Notable)
Halmstad	Sweden	Record high maximum temperature	29.1 C (84.4 F)	41 of 100 (Notable)
Washington 1 W	United States	Record daily precipitation	45.2 mm (1.8 in)	41 of 100 (Notable)
Williams 3 SW	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Marquette	United States	Record low minimum temperature	6.7 C (44.1 F)	41 of 100 (Notable)
Bourges	France	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Arcadia	United States	Record daily precipitation	51.6 mm (2.0 in)	40 of 100 (Notable)
Sovetskaja Gavan	Russia	Record high minimum temperature	20.5 C (68.9 F)	39 of 100 (Notable)
Keams Canyon	United States	Record low minimum temperature	3.3 C (37.9 F)	38 of 100 (Notable)
Texarkana Webb Fld	United States	Record high minimum temperature	27.2 C (81.0 F)	38 of 100 (Notable)
Ville Marie	Canada	Record low minimum temperature	-0.6 C (30.9 F)	36 of 100 (Notable)
Villalba	Mexico	Record daily precipitation	35.8 mm (1.4 in)	36 of 100 (Notable)
Piaxtla	Mexico	Record daily precipitation	59.9 mm (2.4 in)	36 of 100 (Notable)
Las Vegas Muni AP	United States	Record daily precipitation	39.4 mm (1.6 in)	36 of 100 (Notable)
Aquiraz	Brazil	Record daily precipitation	35.4 mm (1.4 in)	35 of 100 (Notable)
Pogranichnoe	Russia	Record high minimum temperature	20.2 C (68.4 F)	35 of 100 (Notable)
Forsyth 6 NNW	United States	Record high maximum temperature	36.1 C (97.0 F)	35 of 100 (Notable)
Rushville	United States	Record daily precipitation	28.4 mm (1.1 in)	35 of 100 (Notable)
Lowville	United States	Record low maximum temperature	18.9 C (66.0 F)	35 of 100 (Notable)
Portage Wwtp	United States	Record low minimum temperature	6.1 C (43.0 F)	35 of 100 (Notable)
Morgan 1 W	United States	Record high maximum temperature	36.7 C (98.1 F)	34 of 100 (Routine)
Bay City	United States	Record low maximum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
Chilton	United States	Record low minimum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Canon City	United States	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
Henderson 8 SSW	United States	Record daily precipitation	40.6 mm (1.6 in)	33 of 100 (Routine)
New London	United States	Record low minimum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Canton 4 SE	United States	Record low maximum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Marathon	United States	Record low maximum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Ladysmith 3W	United States	Record low minimum temperature	5.6 C (42.1 F)	32 of 100 (Routine)
Saginaw Mbs Intl AP	United States	Record low maximum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Elko Rgnl AP	United States	Record high maximum temperature	39.4 C (102.9 F)	32 of 100 (Routine)
Okay	United States	Record high minimum temperature	26.7 C (80.1 F)	31 of 100 (Routine)
Telluride 4WNW	United States	Record high maximum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
Salem	United States	Record daily precipitation	42.2 mm (1.7 in)	31 of 100 (Routine)
Hale Loud Dam	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Ironwood	United States	Record low maximum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Selinsgrove 2 S	United States	Record low maximum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Portage Wwtp	United States	Record low maximum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Estancia	Brazil	Record daily precipitation	49.2 mm (1.9 in)	30 of 100 (Routine)
Ridder	Kazakhstan	Record daily precipitation	26.7 mm (1.1 in)	30 of 100 (Routine)
Cuatro Cienegas (Smn)	Mexico	Record low maximum temperature	26.7 C (80.1 F)	30 of 100 (Routine)
Fall Rvr Lake	United States	Record high maximum temperature	41.7 C (107.1 F)	30 of 100 (Routine)
Brevard	United States	Record low minimum temperature	10.6 C (51.1 F)	30 of 100 (Routine)
Marion	United States	Record low maximum temperature	21.1 C (70.0 F)	30 of 100 (Routine)
Kewaunee	United States	Record low minimum temperature	5.6 C (42.1 F)	30 of 100 (Routine)
Cochrane	Canada	Record low minimum temperature	0.5 C (32.9 F)	29 of 100 (Routine)
Barrage Angliers	Canada	Record low minimum temperature	2.8 C (37.0 F)	29 of 100 (Routine)
Lerwick	United Kingdom	Record daily precipitation	26.0 mm (1.0 in)	29 of 100 (Routine)

Counts by Type and Timescale

646 records

Records set or tied on 30 July 1978 by type: Highest daily maximum 121, Lowest daily maximum 172, Highest daily minimum 118, Lowest daily minimum 92, Heaviest daily rainfall 143.

Records on 30 July 1978 by type
Record type	Records
Highest daily maximum	121
Lowest daily maximum	172
Highest daily minimum	118
Lowest daily minimum	92
Heaviest daily rainfall	143
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 July 1978 by timescale: all-time 1, monthly 11, daily 634.

How Much Records Were Beaten By

491 broken records

Margins by which the 491 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 63.2. Ties are not counted.

Top 20 by Significance

30 July 1978

Top 20 records on 30 July 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 1978	Saint-Germain-Les-Belles, FR	daily rain	60.5 mm (2.4 in)	45.1 mm (1.8 in)	40 years	57 of 100 (Notable)
30 July 1978	Pana, US	daily rain	50.8 mm (2.0 in)	25.9 mm (1.0 in)	84 years	52 of 100 (Notable)
30 July 1978	Enisejsk, RU	monthly rain	46.2 mm (1.8 in)	5.5 mm (0.22 in)	72 years	49 of 100 (Notable)
30 July 1978	Umari, BR	daily rain	45.3 mm (1.8 in)	37.1 mm (1.5 in)	9 years	48 of 100 (Notable)
30 July 1978	Mont-de-Marsan, FR	daily rain	42.5 mm (1.7 in)	27.9 mm (1.1 in)	17 years	48 of 100 (Notable)
30 July 1978	San Luis de la Paz, MX	daily rain	59.9 mm (2.4 in)	44.9 mm (1.8 in)	9 years	47 of 100 (Notable)
30 July 1978	Pascagoula 3 NE, US	monthly low max	23.3 C (73.9 F)	2.3 C (4.1 F)	65 years	47 of 100 (Notable)
30 July 1978	Coloso, PR	daily low max	28.9 C (84.0 F)	1.7 C (3.1 F)	69 years	45 of 100 (Notable)
30 July 1978	Ste Marie (River), US	daily rain	69.3 mm (2.7 in)	63.2 mm (2.5 in)	7 years	45 of 100 (Notable)
30 July 1978	Pascagoula 3 NE, US	daily low min	16.7 C (62.1 F)	3.9 C (7.0 F)	57 years	45 of 100 (Notable)
30 July 1978	Lexington Bluegrass AP, US	monthly rain	109.2 mm (4.3 in)	17.5 mm (0.7 in)	35 years	43 of 100 (Notable)
30 July 1978	Arteaga (Smn), MX	all-time rain	177.8 mm (7.0 in)	18.0 mm (0.7 in)	0 years	42 of 100 (Notable)
30 July 1978	Elliston, US	daily rain	44.5 mm (1.8 in)	21.6 mm (0.9 in)	56 years	42 of 100 (Notable)
30 July 1978	Halmstad, SE	daily high max	29.1 C (84.4 F)	1.6 C (2.9 F)	95 years	41 of 100 (Notable)
30 July 1978	Washington 1 W, US	daily rain	45.2 mm (1.8 in)	23.6 mm (0.9 in)	51 years	41 of 100 (Notable)
30 July 1978	Williams 3 SW, US	daily rain	50.8 mm (2.0 in)	29.0 mm (1.1 in)	56 years	41 of 100 (Notable)
30 July 1978	Marquette, US	daily low min	6.7 C (44.1 F)	1.1 C (2.0 F)	95 years	41 of 100 (Notable)
30 July 1978	Bourges, FR	daily rain	33.0 mm (1.3 in)	21.8 mm (0.9 in)	12 years	40 of 100 (Notable)
30 July 1978	Arcadia, US	daily rain	51.6 mm (2.0 in)	19.1 mm (0.8 in)	63 years	40 of 100 (Notable)
30 July 1978	Sovetskaja Gavan, RU	monthly high min	20.5 C (68.9 F)	2.2 C (4.0 F)	50 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 1978

Records set or tied on this calendar date in each year from 1794 to 1978. 1978 had 646 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 1978-07-30: 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	441
10 to 20	31
20 to 30	13
30 to 40	3
40 to 50	2
50 to 60	0
60 to 70	1