Weather Records on 18 July 1978

881 weather records were set or tied worldwide on 18 July 1978. Highest significance: Uniao Dos Palmares, BR.

Key Facts for 18 July 1978

On 18 July 1978, 881 weather records were set or tied at long-record stations worldwide.
299 were record highs and 248 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 23 monthly and 852 daily.
Uniao Dos Palmares set a monthly record daily precipitation of 123.6 mm (4.9 in) on 18 July 1978.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

881 stations

881 station records on 18 July 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Uniao Dos Palmares	Brazil	Record daily precipitation	123.6 mm (4.9 in)	58 of 100 (Notable)
Priest Rvr Exp STN	United States	Record daily precipitation	33.3 mm (1.3 in)	58 of 100 (Notable)
Acude Gargalheiras	Brazil	Record daily precipitation	48.2 mm (1.9 in)	56 of 100 (Notable)
Peru	United States	Record daily precipitation	56.4 mm (2.2 in)	51 of 100 (Notable)
Omsk	Russia	Record daily precipitation	37.8 mm (1.5 in)	50 of 100 (Notable)
Second Valley (Spring Grove)	Australia	Record daily precipitation	34.4 mm (1.4 in)	47 of 100 (Notable)
Eastland	United States	Record high minimum temperature	28.9 C (84.0 F)	47 of 100 (Notable)
Blackwood Post Office	Australia	Record daily precipitation	27.0 mm (1.1 in)	46 of 100 (Notable)
Elatma	Russia	Record daily precipitation	35.8 mm (1.4 in)	46 of 100 (Notable)
Goldbutte 7 N	United States	Record daily precipitation	43.2 mm (1.7 in)	46 of 100 (Notable)
Kristianstad	Sweden	Record low minimum temperature	6.1 C (43.0 F)	44 of 100 (Notable)
Crookston NW Exp STN	United States	Record daily precipitation	34.8 mm (1.4 in)	44 of 100 (Notable)
Ft Bayard 4W	United States	Record high minimum temperature	20.6 C (69.1 F)	44 of 100 (Notable)
Bernburg/Saale (Nord)	Germany	Record low minimum temperature	5.6 C (42.1 F)	43 of 100 (Notable)
Newport	United States	Record daily precipitation	25.4 mm (1.0 in)	43 of 100 (Notable)
Breakwater	United States	Record daily precipitation	64.8 mm (2.6 in)	42 of 100 (Notable)
Kalacinsk	Russia	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Karlshamn	Sweden	Record low minimum temperature	5.7 C (42.3 F)	41 of 100 (Notable)
Ulricehamn	Sweden	Record low minimum temperature	2.2 C (36.0 F)	41 of 100 (Notable)
Laona 6 SW	United States	Record daily precipitation	52.1 mm (2.1 in)	41 of 100 (Notable)
Coromandel Valley (Branden)	Australia	Record daily precipitation	28.8 mm (1.1 in)	40 of 100 (Notable)
Boras	Sweden	Record low minimum temperature	3.4 C (38.1 F)	40 of 100 (Notable)
Western River	Australia	Record daily precipitation	43.0 mm (1.7 in)	39 of 100 (Notable)
Kirchdorf/Poel	Germany	Record low minimum temperature	7.0 C (44.6 F)	39 of 100 (Notable)
Natashquan A	Canada	Record high maximum temperature	28.2 C (82.8 F)	38 of 100 (Notable)
Velikie Luki	Russia	Record low maximum temperature	14.1 C (57.4 F)	38 of 100 (Notable)
Red Lake Indian Agcy	United States	Record daily precipitation	25.7 mm (1.0 in)	38 of 100 (Notable)
South Londonderry	United States	Record daily precipitation	38.9 mm (1.5 in)	37 of 100 (Notable)
Flambeau Rsvr	United States	Record daily precipitation	51.3 mm (2.0 in)	37 of 100 (Notable)
Rhinelander	United States	Record daily precipitation	51.3 mm (2.0 in)	37 of 100 (Notable)
Kursk	Russia	Record low minimum temperature	8.3 C (46.9 F)	36 of 100 (Notable)
Bogoroditskoye-Fenino	Russia	Record low minimum temperature	8.3 C (46.9 F)	36 of 100 (Notable)
Halmstad	Sweden	Record low minimum temperature	4.9 C (40.8 F)	36 of 100 (Notable)
Red Cloud	United States	Record daily precipitation	42.2 mm (1.7 in)	36 of 100 (Notable)
Schwerin	Germany	Record low minimum temperature	7.1 C (44.8 F)	35 of 100 (Notable)
Babbitt 2 SE	United States	Record daily precipitation	46.5 mm (1.8 in)	35 of 100 (Notable)
Dumas	United States	Record high minimum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Cudlee Creek (Millbrook)	Australia	Record daily precipitation	30.6 mm (1.2 in)	34 of 100 (Routine)
Rice Reservoir-Tomahawk	United States	Record daily precipitation	58.4 mm (2.3 in)	34 of 100 (Routine)
Makuschino	Russia	Record daily precipitation	30.0 mm (1.2 in)	33 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record low minimum temperature	4.9 C (40.8 F)	33 of 100 (Routine)
Tripoli	United States	Record daily precipitation	50.8 mm (2.0 in)	33 of 100 (Routine)
Vancouver 4 NNE	United States	Record low maximum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Omaha Eppley Airfield	United States	Record daily precipitation	59.7 mm (2.4 in)	33 of 100 (Routine)
Port Lincoln	Australia	Record high minimum temperature	13.6 C (56.5 F)	32 of 100 (Routine)
Houghton (Glen Ewin)	Australia	Record daily precipitation	26.2 mm (1.0 in)	32 of 100 (Routine)
Minsk	Belarus	Record low minimum temperature	6.4 C (43.5 F)	32 of 100 (Routine)
Koskats	Sweden	Record daily precipitation	26.0 mm (1.0 in)	32 of 100 (Routine)
Shepetivka	Ukraine	Record low minimum temperature	7.0 C (44.6 F)	32 of 100 (Routine)
Two Harbors	United States	Record daily precipitation	50.3 mm (2.0 in)	32 of 100 (Routine)
Haskell	United States	Record high maximum temperature	42.2 C (108.0 F)	32 of 100 (Routine)
Hillsboro	United States	Record high minimum temperature	26.7 C (80.1 F)	32 of 100 (Routine)
Malta	Brazil	Record daily precipitation	60.0 mm (2.4 in)	31 of 100 (Routine)
Deer Lake	Canada	Record daily precipitation	34.6 mm (1.4 in)	31 of 100 (Routine)
Marnitz	Germany	Record low minimum temperature	6.9 C (44.4 F)	31 of 100 (Routine)
Bishkek	Kyrgyzstan	Record high minimum temperature	24.8 C (76.6 F)	31 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record low minimum temperature	6.5 C (43.7 F)	31 of 100 (Routine)
Grapevine Dam	United States	Record high minimum temperature	26.7 C (80.1 F)	31 of 100 (Routine)
Malaga Aeropuerto	Spain	Record high maximum temperature	44.2 C (111.6 F)	30 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record high maximum temperature	44.5 C (112.1 F)	30 of 100 (Routine)

Counts by Type and Timescale

881 records

Records set or tied on 18 July 1978 by type: Highest daily maximum 157, Lowest daily maximum 96, Highest daily minimum 142, Lowest daily minimum 152, Heaviest daily rainfall 334.

Records on 18 July 1978 by type
Record type	Records
Highest daily maximum	157
Lowest daily maximum	96
Highest daily minimum	142
Lowest daily minimum	152
Heaviest daily rainfall	334
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1978 by timescale: all-time 6, monthly 23, daily 852.

How Much Records Were Beaten By

694 broken records

Margins by which the 694 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 52.6. Ties are not counted.

Top 20 by Significance

18 July 1978

Top 20 records on 18 July 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1978	Uniao Dos Palmares, BR	monthly rain	123.6 mm (4.9 in)	52.6 mm (2.1 in)	9 years	58 of 100 (Notable)
18 July 1978	Priest Rvr Exp STN, US	daily rain	33.3 mm (1.3 in)	20.3 mm (0.8 in)	61 years	58 of 100 (Notable)
18 July 1978	Acude Gargalheiras, BR	daily rain	48.2 mm (1.9 in)	47.2 mm (1.9 in)	39 years	56 of 100 (Notable)
18 July 1978	Peru, US	daily rain	56.4 mm (2.2 in)	45.0 mm (1.8 in)	31 years	51 of 100 (Notable)
18 July 1978	Omsk, RU	daily rain	37.8 mm (1.5 in)	26.4 mm (1.0 in)	23 years	50 of 100 (Notable)
18 July 1978	Second Valley (Spring Grove), AU	daily rain	34.4 mm (1.4 in)	13.6 mm (0.5 in)	61 years	47 of 100 (Notable)
18 July 1978	Eastland, US	daily high min	28.9 C (84.0 F)	4.5 C (8.1 F)	64 years	47 of 100 (Notable)
18 July 1978	Blackwood Post Office, AU	daily rain	27.0 mm (1.1 in)	18.9 mm (0.7 in)	39 years	46 of 100 (Notable)
18 July 1978	Elatma, RU	daily rain	35.8 mm (1.4 in)	18.2 mm (0.7 in)	48 years	46 of 100 (Notable)
18 July 1978	Goldbutte 7 N, US	daily rain	43.2 mm (1.7 in)	21.6 mm (0.9 in)	32 years	46 of 100 (Notable)
18 July 1978	Kristianstad, SE	daily low min	6.1 C (43.0 F)	1.9 C (3.4 F)	91 years	44 of 100 (Notable)
18 July 1978	Crookston NW Exp STN, US	daily rain	34.8 mm (1.4 in)	18.3 mm (0.7 in)	73 years	44 of 100 (Notable)
18 July 1978	Ft Bayard 4W, US	daily high min	20.6 C (69.1 F)	2.8 C (5.0 F)	75 years	44 of 100 (Notable)
18 July 1978	Bernburg/Saale (Nord), DE	daily low min	5.6 C (42.1 F)	3.2 C (5.8 F)	79 years	43 of 100 (Notable)
18 July 1978	Newport, US	daily rain	25.4 mm (1.0 in)	18.3 mm (0.7 in)	5 years	43 of 100 (Notable)
18 July 1978	Breakwater, US	daily rain	64.8 mm (2.6 in)	38.4 mm (1.5 in)	8 years	42 of 100 (Notable)
18 July 1978	Kalacinsk, RU	daily rain	44.5 mm (1.8 in)	25.9 mm (1.0 in)	8 years	41 of 100 (Notable)
18 July 1978	Karlshamn, SE	daily low min	5.7 C (42.3 F)	1.3 C (2.3 F)	91 years	41 of 100 (Notable)
18 July 1978	Ulricehamn, SE	monthly low min	2.2 C (36.0 F)	0.3 C (0.5 F)	76 years	41 of 100 (Notable)
18 July 1978	Laona 6 SW, US	daily rain	52.1 mm (2.1 in)	35.1 mm (1.4 in)	19 years	41 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

1793 to 1978

Records set or tied on this calendar date in each year from 1793 to 1978. 1978 had 881 records.

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

Records on 07-18 in each year
Year	Records
1793	2
1801	1
1845	1
1847	1
1851	1
1858	1
1862	1
1863	2
1865	1
1866	2
1871	2
1872	1
1874	1
1877	1
1878	4
1880	1
1881	2
1883	2
1886	2
1887	2
1888	1
1889	2
1890	4
1891	1
1892	2
1895	1
1896	2
1897	6
1898	2
1899	3
1900	8
1901	5
1902	3
1903	14
1904	7
1905	22
1906	13
1907	12
1908	39
1909	11
1910	33
1911	42
1912	28
1913	21
1914	47
1915	95
1916	235
1917	265
1918	58
1919	38
1920	59
1921	67
1922	138
1923	126
1924	306
1925	217
1926	191
1927	85
1928	108
1929	123
1930	462
1931	382
1932	343
1933	228
1934	502
1935	212
1936	665
1937	334
1938	306
1939	424
1940	352
1941	349
1942	661
1943	277
1944	333
1945	350
1946	334
1947	385
1948	289
1949	521
1950	632
1951	307
1952	597
1953	493
1954	501
1955	423
1956	466
1957	325
1958	475
1959	548
1960	669
1961	280
1962	516
1963	269
1964	523
1965	707
1966	545
1967	735
1968	998
1969	590
1970	530
1971	625
1972	701
1973	976
1974	729
1975	643
1976	1,047
1977	839
1978	881
1979	821
1980	747
1981	624
1982	749
1983	1,071
1984	1,000
1985	582
1986	908
1987	1,845
1988	1,001
1989	1,233
1990	1,053
1991	589
1992	1,135
1993	1,013
1994	720
1995	904
1996	1,157
1997	785
1998	1,169
1999	900
2000	1,214
2001	909
2002	840
2003	1,159
2004	985
2005	1,210
2006	1,285
2007	1,267
2008	593
2009	1,757
2010	878
2011	1,148
2012	1,070
2013	921
2014	1,348
2015	745
2016	609
2017	426
2018	699
2019	548
2020	361
2021	676
2022	1,071
2023	867
2024	581
2025	779
2026	806

Download the Data

Data for records on 1978-07-18: 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	620
10 to 20	47
20 to 30	16
30 to 40	8
40 to 50	2
50 to 60	1