Weather Records on 18 July 1991

589 weather records were set or tied worldwide on 18 July 1991. Highest significance: Svirica, RU.

Key Facts for 18 July 1991

On 18 July 1991, 589 weather records were set or tied at long-record stations worldwide.
319 were record highs and 156 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 15 monthly and 570 daily.
Svirica set a daily record precipitation of 70.1 mm (2.8 in) on 18 July 1991.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

589 stations

589 station records on 18 July 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Svirica	Russia	Record daily precipitation	70.1 mm (2.8 in)	66 of 100 (Major)
Hamersley	Australia	Record daily precipitation	27.0 mm (1.1 in)	59 of 100 (Notable)
Viroqua	United States	Record daily precipitation	76.7 mm (3.0 in)	57 of 100 (Notable)
Gorbica	Russia	Record daily precipitation	62.3 mm (2.5 in)	53 of 100 (Notable)
Ekaterinburg	Russia	Record daily precipitation	27.0 mm (1.1 in)	50 of 100 (Notable)
Amery	United States	Record daily precipitation	66.0 mm (2.6 in)	50 of 100 (Notable)
Rautjarvi Simpele Kangaskoski	Finland	Record daily precipitation	31.5 mm (1.2 in)	49 of 100 (Notable)
Bogucany	Russia	Record daily precipitation	31.3 mm (1.2 in)	49 of 100 (Notable)
St Croix Falls	United States	Record daily precipitation	119.4 mm (4.7 in)	48 of 100 (Notable)
San Martin Chalchicuautla	Mexico	Record low minimum temperature	15.0 C (59.0 F)	47 of 100 (Notable)
Trempealeau Dam 6	United States	Record daily precipitation	77.2 mm (3.0 in)	47 of 100 (Notable)
Grand Meadow	United States	Record daily precipitation	79.0 mm (3.1 in)	46 of 100 (Notable)
Brackettville	United States	Record low minimum temperature	13.9 C (57.0 F)	43 of 100 (Notable)
Ellendale	United States	Record high minimum temperature	22.2 C (72.0 F)	40 of 100 (Notable)
Palmerton	United States	Record high maximum temperature	38.3 C (100.9 F)	39 of 100 (Notable)
Wessington Springs	United States	Record high maximum temperature	38.9 C (102.0 F)	39 of 100 (Notable)
Sierra Blanca 2 E	United States	Record low minimum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Rome	United States	Record low maximum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Snowville	United States	Record high minimum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Newnan 7 WNW	United States	Record daily precipitation	52.8 mm (2.1 in)	37 of 100 (Notable)
Chickamauga 2 SW	United States	Record low maximum temperature	26.1 C (79.0 F)	36 of 100 (Notable)
Ashley	United States	Record high minimum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Britton	United States	Record high minimum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Naalehu 14	United States	Record low maximum temperature	23.9 C (75.0 F)	35 of 100 (Notable)
Gurabo Substn	Puerto Rico [United States]	Record low minimum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Kamensk-Uralskij	Russia	Record daily precipitation	42.1 mm (1.7 in)	34 of 100 (Routine)
Eureka	United States	Record high minimum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Tenango de Doria	Mexico	Record low maximum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Dahlonega 4WSW	United States	Record low maximum temperature	22.8 C (73.0 F)	33 of 100 (Routine)
Gainesville	United States	Record low maximum temperature	23.3 C (73.9 F)	33 of 100 (Routine)
Rimini 2 SSW	United States	Record daily precipitation	61.7 mm (2.4 in)	33 of 100 (Routine)
Mellette 4 W	United States	Record high minimum temperature	23.9 C (75.0 F)	33 of 100 (Routine)
Lappeenranta Lentoasema	Finland	Record daily precipitation	26.4 mm (1.0 in)	32 of 100 (Routine)
Dudinka	Russia	Record high minimum temperature	18.7 C (65.7 F)	32 of 100 (Routine)
Albany 3 SE	United States	Record daily precipitation	55.6 mm (2.2 in)	32 of 100 (Routine)
Fullerton 1 ESE	United States	Record high minimum temperature	21.7 C (71.1 F)	32 of 100 (Routine)
Bremerton	United States	Record low maximum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Jian	China	Record high maximum temperature	40.3 C (104.5 F)	31 of 100 (Routine)
Bushnell 1 E	United States	Record high minimum temperature	24.4 C (75.9 F)	31 of 100 (Routine)
Washington 2 ESE	United States	Record low maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Eastport	United States	Record high minimum temperature	16.7 C (62.1 F)	31 of 100 (Routine)
Sedlovaja	Russia	Record daily precipitation	55.6 mm (2.2 in)	30 of 100 (Routine)
Redlands	United States	Record low maximum temperature	25.0 C (77.0 F)	30 of 100 (Routine)
Winona Dam 5 A	United States	Record daily precipitation	53.6 mm (2.1 in)	30 of 100 (Routine)
Jamestown State Hosp	United States	Record high minimum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Montrose	United States	Record high maximum temperature	32.8 C (91.0 F)	29 of 100 (Routine)
Johnston 4 SW	United States	Record daily precipitation	43.9 mm (1.7 in)	29 of 100 (Routine)
Rio Grande (Smn)	Mexico	Record low maximum temperature	20.6 C (69.1 F)	28 of 100 (Routine)
Juliette	United States	Record daily precipitation	53.3 mm (2.1 in)	28 of 100 (Routine)
Warrenton	United States	Record low maximum temperature	25.6 C (78.1 F)	28 of 100 (Routine)
Ashland	United States	Record low minimum temperature	15.0 C (59.0 F)	28 of 100 (Routine)
Long Creek	United States	Record low maximum temperature	21.7 C (71.1 F)	28 of 100 (Routine)
Riverton	United States	Record high maximum temperature	37.8 C (100.0 F)	28 of 100 (Routine)
Los Angeles Downtown/Usc	United States	Record low maximum temperature	22.2 C (72.0 F)	28 of 100 (Routine)
El Carmen (Smn)	Mexico	Record low minimum temperature	20.0 C (68.0 F)	27 of 100 (Routine)
Beja	Portugal	Record high minimum temperature	28.4 C (83.1 F)	27 of 100 (Routine)
Backefors	Sweden	Record daily precipitation	44.8 mm (1.8 in)	27 of 100 (Routine)
Toccoa	United States	Record low maximum temperature	22.2 C (72.0 F)	27 of 100 (Routine)
Brookings 2 NE	United States	Record high minimum temperature	22.8 C (73.0 F)	27 of 100 (Routine)
Hot Springs	United States	Record high minimum temperature	23.9 C (75.0 F)	27 of 100 (Routine)

Counts by Type and Timescale

589 records

Records set or tied on 18 July 1991 by type: Highest daily maximum 171, Lowest daily maximum 87, Highest daily minimum 148, Lowest daily minimum 69, Heaviest daily rainfall 114.

Records on 18 July 1991 by type
Record type	Records
Highest daily maximum	171
Lowest daily maximum	87
Highest daily minimum	148
Lowest daily minimum	69
Heaviest daily rainfall	114
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1991 by timescale: all-time 4, monthly 15, daily 570.

How Much Records Were Beaten By

403 broken records

Margins by which the 403 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.8. Ties are not counted.

Top 20 by Significance

18 July 1991

Top 20 records on 18 July 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1991	Svirica, RU	daily rain	70.1 mm (2.8 in)	35.7 mm (1.4 in)	57 years	66 of 100 (Major)
18 July 1991	Hamersley, AU	daily rain	27.0 mm (1.1 in)	20.6 mm (0.8 in)	77 years	59 of 100 (Notable)
18 July 1991	Viroqua, US	daily rain	76.7 mm (3.0 in)	40.6 mm (1.6 in)	86 years	57 of 100 (Notable)
18 July 1991	Gorbica, RU	daily rain	62.3 mm (2.5 in)	43.8 mm (1.7 in)	28 years	53 of 100 (Notable)
18 July 1991	Ekaterinburg, RU	daily rain	27.0 mm (1.1 in)	12.4 mm (0.5 in)	88 years	50 of 100 (Notable)
18 July 1991	Amery, US	daily rain	66.0 mm (2.6 in)	40.9 mm (1.6 in)	20 years	50 of 100 (Notable)
18 July 1991	Rautjarvi Simpele Kangaskoski, FI	daily rain	31.5 mm (1.2 in)	24.1 mm (0.9 in)	24 years	49 of 100 (Notable)
18 July 1991	Bogucany, RU	daily rain	31.3 mm (1.2 in)	19.0 mm (0.7 in)	52 years	49 of 100 (Notable)
18 July 1991	St Croix Falls, US	monthly rain	119.4 mm (4.7 in)	33.0 mm (1.3 in)	18 years	48 of 100 (Notable)
18 July 1991	San Martin Chalchicuautla, MX	daily low min	15.0 C (59.0 F)	5.0 C (9.0 F)	28 years	47 of 100 (Notable)
18 July 1991	Trempealeau Dam 6, US	daily rain	77.2 mm (3.0 in)	51.8 mm (2.0 in)	8 years	47 of 100 (Notable)
18 July 1991	Grand Meadow, US	daily rain	79.0 mm (3.1 in)	13.7 mm (0.5 in)	95 years	46 of 100 (Notable)
18 July 1991	Brackettville, US	daily low min	13.9 C (57.0 F)	2.8 C (5.0 F)	72 years	43 of 100 (Notable)
18 July 1991	Ellendale, US	daily high min	22.2 C (72.0 F)	2.2 C (4.0 F)	85 years	40 of 100 (Notable)
18 July 1991	Palmerton, US	daily high max	38.3 C (100.9 F)	4.4 C (7.9 F)	68 years	39 of 100 (Notable)
18 July 1991	Wessington Springs, US	daily high max	38.9 C (102.0 F)	0.6 C (1.1 F)	96 years	39 of 100 (Notable)
18 July 1991	Sierra Blanca 2 E, US	daily low min	14.4 C (57.9 F)	0.6 C (1.1 F)	94 years	39 of 100 (Notable)
18 July 1991	Rome, US	daily low max	23.9 C (75.0 F)	0.5 C (0.9 F)	94 years	38 of 100 (Notable)
18 July 1991	Snowville, US	daily high min	21.7 C (71.1 F)	5.6 C (10.1 F)	50 years	38 of 100 (Notable)
18 July 1991	Newnan 7 WNW, US	daily rain	52.8 mm (2.1 in)	15.7 mm (0.6 in)	52 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

1793 to 1991

Records set or tied on this calendar date in each year from 1793 to 1991. 1991 had 589 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 1991-07-18: 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	362
10 to 20	26
20 to 30	7
30 to 40	3
40 to 50	4
50 to 60	1