Weather Records on 18 July 1979

821 weather records were set or tied worldwide on 18 July 1979. Highest significance: Crockett, US.

Key Facts for 18 July 1979

On 18 July 1979, 821 weather records were set or tied at long-record stations worldwide.
206 were record highs and 346 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 13 monthly and 806 daily.
Crockett set a daily record precipitation of 80.0 mm (3.1 in) on 18 July 1979.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 460 records.

Record Map

821 stations

821 station records on 18 July 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Crockett	United States	Record daily precipitation	80.0 mm (3.1 in)	67 of 100 (Major)
Lenoir	United States	Record daily precipitation	79.8 mm (3.1 in)	61 of 100 (Major)
Shiprock	United States	Record daily precipitation	25.4 mm (1.0 in)	57 of 100 (Notable)
Norman 3SSE	United States	Record daily precipitation	83.3 mm (3.3 in)	56 of 100 (Notable)
Boerne	United States	Record daily precipitation	87.6 mm (3.4 in)	56 of 100 (Notable)
Childress Muni AP	United States	Record daily precipitation	62.2 mm (2.4 in)	50 of 100 (Notable)
Hennessey 4 ESE	United States	Record daily precipitation	71.1 mm (2.8 in)	48 of 100 (Notable)
Columbus	United States	Record daily precipitation	63.8 mm (2.5 in)	48 of 100 (Notable)
Bolaos	Mexico	Record daily precipitation	75.7 mm (3.0 in)	47 of 100 (Notable)
Sarlyk	Russia	Record daily precipitation	30.9 mm (1.2 in)	46 of 100 (Notable)
Elizabeth City	United States	Record daily precipitation	98.0 mm (3.9 in)	46 of 100 (Notable)
Morrilton	United States	Record daily precipitation	81.3 mm (3.2 in)	45 of 100 (Notable)
Dillon	United States	Record daily precipitation	67.3 mm (2.6 in)	45 of 100 (Notable)
Laranja da Terra	Brazil	Record daily precipitation	48.6 mm (1.9 in)	44 of 100 (Notable)
San Javier	Mexico	Record daily precipitation	120.9 mm (4.8 in)	44 of 100 (Notable)
Denison Dam	United States	Record daily precipitation	71.1 mm (2.8 in)	44 of 100 (Notable)
Rosser	United States	Record daily precipitation	85.1 mm (3.4 in)	43 of 100 (Notable)
Tahoka	United States	Record daily precipitation	42.7 mm (1.7 in)	43 of 100 (Notable)
Bremerton	United States	Record high maximum temperature	35.6 C (96.1 F)	43 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record daily precipitation	37.1 mm (1.5 in)	42 of 100 (Notable)
Middletown 4 W	United States	Record daily precipitation	70.9 mm (2.8 in)	42 of 100 (Notable)
White Signal	United States	Record daily precipitation	41.9 mm (1.6 in)	41 of 100 (Notable)
McKinney Muni AP	United States	Record daily precipitation	53.1 mm (2.1 in)	41 of 100 (Notable)
Cotonou	Benin	Record daily precipitation	146.3 mm (5.8 in)	40 of 100 (Notable)
Burgos-Villafria	Spain	Record daily precipitation	27.2 mm (1.1 in)	40 of 100 (Notable)
Wilmington New Castle Co AP	United States	Record daily precipitation	61.5 mm (2.4 in)	40 of 100 (Notable)
Richfield	United States	Record daily precipitation	35.1 mm (1.4 in)	39 of 100 (Notable)
Maple Plain	United States	Record low minimum temperature	7.2 C (45.0 F)	39 of 100 (Notable)
Ersov	Russia	Record daily precipitation	32.0 mm (1.3 in)	38 of 100 (Notable)
Waldron	United States	Record daily precipitation	71.4 mm (2.8 in)	38 of 100 (Notable)
San Antonio Intl AP	United States	Record daily precipitation	68.6 mm (2.7 in)	38 of 100 (Notable)
Hostotipaquillo	Mexico	Record low minimum temperature	11.7 C (53.1 F)	37 of 100 (Notable)
Graham	United States	Record daily precipitation	42.4 mm (1.7 in)	37 of 100 (Notable)
Huamantla	Mexico	Record daily precipitation	33.8 mm (1.3 in)	36 of 100 (Notable)
Grinnell 3 SW	United States	Record low minimum temperature	7.2 C (45.0 F)	36 of 100 (Notable)
Benton Harbor AP	United States	Record low maximum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Gallup 5 E	United States	Record high maximum temperature	37.8 C (100.0 F)	36 of 100 (Notable)
Thurber 5 NE	United States	Record daily precipitation	41.9 mm (1.6 in)	36 of 100 (Notable)
Janesville	United States	Record low minimum temperature	10.0 C (50.0 F)	36 of 100 (Notable)
Jessieville	United States	Record daily precipitation	48.3 mm (1.9 in)	35 of 100 (Notable)
Ludington 4 SE	United States	Record low minimum temperature	6.1 C (43.0 F)	35 of 100 (Notable)
Snyder	United States	Record daily precipitation	54.6 mm (2.1 in)	35 of 100 (Notable)
Palpan	Mexico	Record high minimum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
Tanger	Sweden	Record daily precipitation	28.6 mm (1.1 in)	34 of 100 (Routine)
Livingston 2 NNE	United States	Record daily precipitation	43.7 mm (1.7 in)	34 of 100 (Routine)
Raleigh AP	United States	Record daily precipitation	48.8 mm (1.9 in)	34 of 100 (Routine)
Subiaco	United States	Record low maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Tuscola	United States	Record low minimum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Sioux Ctr 2 SE	United States	Record low minimum temperature	8.9 C (48.0 F)	33 of 100 (Routine)
Tatum	United States	Record low maximum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Marietta 5SW	United States	Record daily precipitation	61.7 mm (2.4 in)	33 of 100 (Routine)
Alvin	United States	Record daily precipitation	58.4 mm (2.3 in)	33 of 100 (Routine)
Lynchburg Rgnl AP	United States	Record daily precipitation	64.8 mm (2.6 in)	33 of 100 (Routine)
Trenton	United States	Record daily precipitation	48.5 mm (1.9 in)	33 of 100 (Routine)
Rantoul	United States	Record low minimum temperature	9.4 C (48.9 F)	33 of 100 (Routine)
Bustard Head Lighthouse	Australia	Record daily precipitation	28.8 mm (1.1 in)	32 of 100 (Routine)
Troitsk	Russia	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Galesburg	United States	Record low minimum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Algona	United States	Record low minimum temperature	10.0 C (50.0 F)	32 of 100 (Routine)
Elkhart	United States	Record low maximum temperature	26.1 C (79.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

821 records

Records set or tied on 18 July 1979 by type: Highest daily maximum 104, Lowest daily maximum 156, Highest daily minimum 102, Lowest daily minimum 190, Heaviest daily rainfall 269.

Records on 18 July 1979 by type
Record type	Records
Highest daily maximum	104
Lowest daily maximum	156
Highest daily minimum	102
Lowest daily minimum	190
Heaviest daily rainfall	269
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1979 by timescale: all-time 2, monthly 13, daily 806.

How Much Records Were Beaten By

616 broken records

Margins by which the 616 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.6. Ties are not counted.

Top 20 by Significance

18 July 1979

Top 20 records on 18 July 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1979	Crockett, US	daily rain	80.0 mm (3.1 in)	60.2 mm (2.4 in)	68 years	67 of 100 (Major)
18 July 1979	Lenoir, US	daily rain	79.8 mm (3.1 in)	43.5 mm (1.7 in)	60 years	61 of 100 (Major)
18 July 1979	Shiprock, US	daily rain	25.4 mm (1.0 in)	22.9 mm (0.9 in)	44 years	57 of 100 (Notable)
18 July 1979	Norman 3SSE, US	daily rain	83.3 mm (3.3 in)	39.6 mm (1.6 in)	81 years	56 of 100 (Notable)
18 July 1979	Boerne, US	daily rain	87.6 mm (3.4 in)	66.0 mm (2.6 in)	48 years	56 of 100 (Notable)
18 July 1979	Childress Muni AP, US	daily rain	62.2 mm (2.4 in)	53.3 mm (2.1 in)	28 years	50 of 100 (Notable)
18 July 1979	Hennessey 4 ESE, US	daily rain	71.1 mm (2.8 in)	48.0 mm (1.9 in)	28 years	48 of 100 (Notable)
18 July 1979	Columbus, US	daily rain	63.8 mm (2.5 in)	30.8 mm (1.2 in)	69 years	48 of 100 (Notable)
18 July 1979	Bolaos, MX	daily rain	75.7 mm (3.0 in)	55.9 mm (2.2 in)	16 years	47 of 100 (Notable)
18 July 1979	Sarlyk, RU	daily rain	30.9 mm (1.2 in)	22.6 mm (0.9 in)	22 years	46 of 100 (Notable)
18 July 1979	Elizabeth City, US	daily rain	98.0 mm (3.9 in)	59.1 mm (2.3 in)	26 years	46 of 100 (Notable)
18 July 1979	Morrilton, US	monthly rain	81.3 mm (3.2 in)	17.3 mm (0.7 in)	55 years	45 of 100 (Notable)
18 July 1979	Dillon, US	daily rain	67.3 mm (2.6 in)	30.0 mm (1.2 in)	68 years	45 of 100 (Notable)
18 July 1979	Laranja da Terra, BR	monthly rain	48.6 mm (1.9 in)	21.0 mm (0.8 in)	1 year	44 of 100 (Notable)
18 July 1979	San Javier, MX	daily rain	120.9 mm (4.8 in)	75.9 mm (3.0 in)	4 years	44 of 100 (Notable)
18 July 1979	Denison Dam, US	daily rain	71.1 mm (2.8 in)	53.6 mm (2.1 in)	20 years	44 of 100 (Notable)
18 July 1979	Rosser, US	daily rain	85.1 mm (3.4 in)	61.0 mm (2.4 in)	26 years	43 of 100 (Notable)
18 July 1979	Tahoka, US	daily rain	42.7 mm (1.7 in)	32.0 mm (1.3 in)	49 years	43 of 100 (Notable)
18 July 1979	Bremerton, US	daily high max	35.6 C (96.1 F)	5.0 C (9.0 F)	76 years	43 of 100 (Notable)
18 July 1979	Ponce 4 E, PR	daily rain	37.1 mm (1.5 in)	21.4 mm (0.8 in)	69 years	42 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 1979

Records set or tied on this calendar date in each year from 1793 to 1979. 1979 had 821 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 1979-07-18: 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 20	557
20 to 40	44
40 to 60	10
60 to 80	4
80 to 100	1