Weather Records on 18 July 1984

1,000 weather records were set or tied worldwide on 18 July 1984. Highest significance: Cedartown, US.

Key Facts for 18 July 1984

On 18 July 1984, 1,000 weather records were set or tied at long-record stations worldwide.
217 were record highs and 494 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 13 monthly and 984 daily.
Cedartown set a daily record precipitation of 95.5 mm (3.8 in) on 18 July 1984.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 458 records.

Record Map

1,000 stations

1,000 station records on 18 July 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cedartown	United States	Record daily precipitation	95.5 mm (3.8 in)	59 of 100 (Notable)
Cornelia	United States	Record daily precipitation	103.4 mm (4.1 in)	53 of 100 (Notable)
Newport 1 NW	United States	Record daily precipitation	69.9 mm (2.8 in)	53 of 100 (Notable)
Toccoa	United States	Record daily precipitation	79.2 mm (3.1 in)	51 of 100 (Notable)
Red Springs 1 SE	United States	Record daily precipitation	66.0 mm (2.6 in)	50 of 100 (Notable)
Richland	United States	Record high minimum temperature	29.4 C (84.9 F)	50 of 100 (Notable)
Greeneville Exp STN	United States	Record daily precipitation	52.1 mm (2.1 in)	49 of 100 (Notable)
Rosman	United States	Record daily precipitation	95.3 mm (3.8 in)	48 of 100 (Notable)
Cristais	Brazil	Record daily precipitation	26.8 mm (1.1 in)	47 of 100 (Notable)
Franklin 3 NW	United States	Record low minimum temperature	15.6 C (60.1 F)	47 of 100 (Notable)
Paola	United States	Record low minimum temperature	12.2 C (54.0 F)	46 of 100 (Notable)
Rjazan	Russia	Record daily precipitation	33.8 mm (1.3 in)	45 of 100 (Notable)
Paducah 7E	United States	Record daily precipitation	55.1 mm (2.2 in)	45 of 100 (Notable)
Danville 2 SE	United States	Record daily precipitation	68.1 mm (2.7 in)	45 of 100 (Notable)
Adin Rs	United States	Record high minimum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Lexington	United States	Record daily precipitation	72.6 mm (2.9 in)	44 of 100 (Notable)
Marshall	United States	Record daily precipitation	64.5 mm (2.5 in)	44 of 100 (Notable)
Tumacacori Nm	United States	Record daily precipitation	57.9 mm (2.3 in)	43 of 100 (Notable)
Chemnitz	Germany	Record low maximum temperature	13.4 C (56.1 F)	42 of 100 (Notable)
Visby_Flygplats	Sweden	Record low minimum temperature	7.8 C (46.0 F)	42 of 100 (Notable)
Wamego 4 W	United States	Record low minimum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Siler City 2 N	United States	Record daily precipitation	62.7 mm (2.5 in)	41 of 100 (Notable)
Grants Pass	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Canton	United States	Record daily precipitation	67.1 mm (2.6 in)	40 of 100 (Notable)
Cataloochee	United States	Record daily precipitation	57.9 mm (2.3 in)	40 of 100 (Notable)
Pisgah Forest 3 NE	United States	Record daily precipitation	70.4 mm (2.8 in)	40 of 100 (Notable)
Kearneysville	United States	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)
Dolinsk	Russia	Record daily precipitation	29.9 mm (1.2 in)	39 of 100 (Notable)
Cambridge	United States	Record low minimum temperature	7.8 C (46.0 F)	39 of 100 (Notable)
Knoxville AP	United States	Record daily precipitation	40.6 mm (1.6 in)	39 of 100 (Notable)
Trafalgar Station	Australia	Record daily precipitation	25.0 mm (1.0 in)	38 of 100 (Notable)
Magdeburg	Germany	Record low maximum temperature	15.5 C (59.9 F)	38 of 100 (Notable)
Laveen 3 SSE	United States	Record daily precipitation	33.0 mm (1.3 in)	38 of 100 (Notable)
Parsons 2 NW	United States	Record low minimum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Carrollton	United States	Record low minimum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Neosho	United States	Record low minimum temperature	11.7 C (53.1 F)	38 of 100 (Notable)
Elizabethton	United States	Record daily precipitation	39.6 mm (1.6 in)	38 of 100 (Notable)
Princeton	United States	Record low minimum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Houston William P Hobby AP	United States	Record daily precipitation	66.5 mm (2.6 in)	37 of 100 (Notable)
Montpelier AP	United States	Record daily precipitation	33.3 mm (1.3 in)	37 of 100 (Notable)
Primghar	United States	Record low minimum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Washington	United States	Record low minimum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Frederick 3 E	United States	Record daily precipitation	48.3 mm (1.9 in)	36 of 100 (Notable)
Mc Minnville	United States	Record daily precipitation	46.2 mm (1.8 in)	36 of 100 (Notable)
Hillsville	United States	Record daily precipitation	36.1 mm (1.4 in)	36 of 100 (Notable)
Long Lake Dam	United States	Record low maximum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Union Hidalgo	Mexico	Record high maximum temperature	40.0 C (104.0 F)	35 of 100 (Notable)
Oceanside Marina	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Stony Gorge Rsvr	United States	Record high minimum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Tiskilwa 2 SE	United States	Record low maximum temperature	25.6 C (78.1 F)	35 of 100 (Notable)
Charles City	United States	Record low minimum temperature	10.0 C (50.0 F)	35 of 100 (Notable)
Caledonia	United States	Record low maximum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Pipestone	United States	Record low minimum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Plymouth 5 E	United States	Record daily precipitation	84.1 mm (3.3 in)	35 of 100 (Notable)
Tryon	United States	Record daily precipitation	60.2 mm (2.4 in)	35 of 100 (Notable)
Adrian 2 NNE	United States	Record low maximum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Bergland Dam	United States	Record low maximum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Mtn Grove 2 N	United States	Record low minimum temperature	11.1 C (52.0 F)	34 of 100 (Routine)
Pawhuska	United States	Record low minimum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Rogersville 1 NE	United States	Record daily precipitation	29.2 mm (1.1 in)	34 of 100 (Routine)

Counts by Type and Timescale

1,000 records

Records set or tied on 18 July 1984 by type: Highest daily maximum 53, Lowest daily maximum 221, Highest daily minimum 164, Lowest daily minimum 273, Heaviest daily rainfall 289.

Records on 18 July 1984 by type
Record type	Records
Highest daily maximum	53
Lowest daily maximum	221
Highest daily minimum	164
Lowest daily minimum	273
Heaviest daily rainfall	289
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1984 by timescale: all-time 3, monthly 13, daily 984.

How Much Records Were Beaten By

755 broken records

Margins by which the 755 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.4. Ties are not counted.

Top 20 by Significance

18 July 1984

Top 20 records on 18 July 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1984	Cedartown, US	daily rain	95.5 mm (3.8 in)	76.4 mm (3.0 in)	37 years	59 of 100 (Notable)
18 July 1984	Cornelia, US	daily rain	103.4 mm (4.1 in)	66.6 mm (2.6 in)	25 years	53 of 100 (Notable)
18 July 1984	Newport 1 NW, US	daily rain	69.9 mm (2.8 in)	43.2 mm (1.7 in)	27 years	53 of 100 (Notable)
18 July 1984	Toccoa, US	daily rain	79.2 mm (3.1 in)	34.7 mm (1.4 in)	63 years	51 of 100 (Notable)
18 July 1984	Red Springs 1 SE, US	daily rain	66.0 mm (2.6 in)	42.9 mm (1.7 in)	51 years	50 of 100 (Notable)
18 July 1984	Richland, US	daily high min	29.4 C (84.9 F)	8.8 C (15.8 F)	62 years	50 of 100 (Notable)
18 July 1984	Greeneville Exp STN, US	daily rain	52.1 mm (2.1 in)	19.1 mm (0.8 in)	84 years	49 of 100 (Notable)
18 July 1984	Rosman, US	daily rain	95.3 mm (3.8 in)	53.4 mm (2.1 in)	35 years	48 of 100 (Notable)
18 July 1984	Cristais, BR	daily rain	26.8 mm (1.1 in)	23.2 mm (0.9 in)	23 years	47 of 100 (Notable)
18 July 1984	Franklin 3 NW, US	monthly low min	15.6 C (60.1 F)	1.1 C (2.0 F)	68 years	47 of 100 (Notable)
18 July 1984	Paola, US	daily low min	12.2 C (54.0 F)	3.9 C (7.0 F)	84 years	46 of 100 (Notable)
18 July 1984	Rjazan, RU	daily rain	33.8 mm (1.3 in)	17.2 mm (0.7 in)	55 years	45 of 100 (Notable)
18 July 1984	Paducah 7E, US	daily rain	55.1 mm (2.2 in)	38.3 mm (1.5 in)	34 years	45 of 100 (Notable)
18 July 1984	Danville 2 SE, US	daily rain	68.1 mm (2.7 in)	12.2 mm (0.5 in)	92 years	45 of 100 (Notable)
18 July 1984	Adin Rs, US	daily high min	17.8 C (64.0 F)	3.4 C (6.1 F)	89 years	44 of 100 (Notable)
18 July 1984	Lexington, US	daily rain	72.6 mm (2.9 in)	41.4 mm (1.6 in)	22 years	44 of 100 (Notable)
18 July 1984	Marshall, US	daily rain	64.5 mm (2.5 in)	19.3 mm (0.8 in)	63 years	44 of 100 (Notable)
18 July 1984	Tumacacori Nm, US	daily rain	57.9 mm (2.3 in)	34.0 mm (1.3 in)	10 years	43 of 100 (Notable)
18 July 1984	Chemnitz, DE	daily low max	13.4 C (56.1 F)	1.0 C (1.8 F)	100 years	42 of 100 (Notable)
18 July 1984	Visby_Flygplats, SE	daily low min	7.8 C (46.0 F)	1.2 C (2.2 F)	90 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 1984

Records set or tied on this calendar date in each year from 1793 to 1984. 1984 had 1,000 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 1984-07-18: 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	646
10 to 20	57
20 to 30	32
30 to 40	11
40 to 50	5
50 to 60	2
60 to 70	1
70 to 80	1