Weather Records on 18 July 1999

900 weather records were set or tied worldwide on 18 July 1999. Highest significance: Petropavlovsk-Kamchatskij, RU.

Key Facts for 18 July 1999

On 18 July 1999, 900 weather records were set or tied at long-record stations worldwide.
350 were record highs and 302 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 22 monthly and 872 daily.
Petropavlovsk-Kamchatskij set a daily record precipitation of 57.7 mm (2.3 in) on 18 July 1999.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

900 stations

900 station records on 18 July 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Petropavlovsk-Kamchatskij	Russia	Record daily precipitation	57.7 mm (2.3 in)	79 of 100 (Major)
Osage	United States	Record daily precipitation	146.1 mm (5.8 in)	66 of 100 (Major)
Tenosique (Smn)	Mexico	Record low minimum temperature	15.0 C (59.0 F)	64 of 100 (Major)
Wisconsin Rapids	United States	Record daily precipitation	55.4 mm (2.2 in)	61 of 100 (Major)
Fortine 1 N	United States	Record daily precipitation	39.9 mm (1.6 in)	55 of 100 (Notable)
Petropavlovskij Majak	Russia	Record daily precipitation	64.4 mm (2.5 in)	51 of 100 (Notable)
Billingsley	United States	Record daily precipitation	104.1 mm (4.1 in)	49 of 100 (Notable)
Hancock Exp Farm	United States	Record daily precipitation	95.3 mm (3.8 in)	49 of 100 (Notable)
Elephant Butte Dam	United States	Record daily precipitation	30.5 mm (1.2 in)	48 of 100 (Notable)
Presa Taxhimay	Mexico	Record high minimum temperature	18.3 C (64.9 F)	47 of 100 (Notable)
Rainer Ohanapecosh	United States	Record daily precipitation	29.0 mm (1.1 in)	47 of 100 (Notable)
Eureka Rs	United States	Record daily precipitation	27.7 mm (1.1 in)	46 of 100 (Notable)
Bernardo	United States	Record daily precipitation	28.4 mm (1.1 in)	46 of 100 (Notable)
Bosque del Apache	United States	Record daily precipitation	39.4 mm (1.6 in)	46 of 100 (Notable)
Ixcateopan de Tlapa	Mexico	Record daily precipitation	63.8 mm (2.5 in)	45 of 100 (Notable)
Colonia Alvaro Obregon	Mexico	Record daily precipitation	56.9 mm (2.2 in)	45 of 100 (Notable)
Greencastle 1 W	United States	Record daily precipitation	37.6 mm (1.5 in)	45 of 100 (Notable)
Charlotteburg Rsvr	United States	Record high maximum temperature	37.8 C (100.0 F)	45 of 100 (Notable)
Alcalde	United States	Record daily precipitation	30.5 mm (1.2 in)	45 of 100 (Notable)
Bowie	United States	Record low maximum temperature	26.7 C (80.1 F)	44 of 100 (Notable)
Sussex 1 NW	United States	Record high maximum temperature	37.8 C (100.0 F)	44 of 100 (Notable)
Great Sand Dunes Np & Preserve	United States	Record daily precipitation	26.2 mm (1.0 in)	43 of 100 (Notable)
Setauket Strong	United States	Record high maximum temperature	36.7 C (98.1 F)	43 of 100 (Notable)
Hamburg	United States	Record high maximum temperature	37.2 C (99.0 F)	43 of 100 (Notable)
Buhta Providenja	Russia	Record daily precipitation	36.5 mm (1.4 in)	42 of 100 (Notable)
Skovorodino	Russia	Record daily precipitation	53.9 mm (2.1 in)	42 of 100 (Notable)
Kingston	United States	Record high maximum temperature	35.0 C (95.0 F)	42 of 100 (Notable)
Weslaco	United States	Record daily precipitation	52.8 mm (2.1 in)	42 of 100 (Notable)
Hulett	United States	Record daily precipitation	35.6 mm (1.4 in)	42 of 100 (Notable)
De Soto	United States	Record daily precipitation	49.0 mm (1.9 in)	41 of 100 (Notable)
Cornudas Svc STN	United States	Record daily precipitation	45.7 mm (1.8 in)	41 of 100 (Notable)
Olinala (Smn)	Mexico	Record daily precipitation	72.6 mm (2.9 in)	40 of 100 (Notable)
Xicotepec de Juarez	Mexico	Record daily precipitation	157.0 mm (6.2 in)	40 of 100 (Notable)
Woodstock	United States	Record high maximum temperature	37.8 C (100.0 F)	40 of 100 (Notable)
Blue Hill Coop	United States	Record high maximum temperature	35.6 C (96.1 F)	40 of 100 (Notable)
Brockton	United States	Record high maximum temperature	36.7 C (98.1 F)	40 of 100 (Notable)
Haverhill	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Hilland 2 NW	United States	Record daily precipitation	36.8 mm (1.4 in)	40 of 100 (Notable)
Almaty	Kazakhstan	Record daily precipitation	25.7 mm (1.0 in)	39 of 100 (Notable)
Apizaco	Mexico	Record daily precipitation	31.0 mm (1.2 in)	39 of 100 (Notable)
Kon-Kolodez	Russia	Record high maximum temperature	35.5 C (95.9 F)	39 of 100 (Notable)
Yugarenok	Russia	Record high maximum temperature	36.0 C (96.8 F)	39 of 100 (Notable)
Clear Lake	United States	Record low maximum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Hilland 2 NW	United States	Record low maximum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Gallinas	Mexico	Record daily precipitation	217.2 mm (8.6 in)	38 of 100 (Notable)
Tantizohuiche	Mexico	Record daily precipitation	167.9 mm (6.6 in)	38 of 100 (Notable)
Cardenas	Mexico	Record daily precipitation	80.3 mm (3.2 in)	38 of 100 (Notable)
San Marcos Huaquilpan	Mexico	Record daily precipitation	41.4 mm (1.6 in)	38 of 100 (Notable)
Dresden	United States	Record daily precipitation	52.6 mm (2.1 in)	38 of 100 (Notable)
Gardiner	United States	Record high maximum temperature	35.0 C (95.0 F)	38 of 100 (Notable)
Hillsboro 3 N	United States	Record low minimum temperature	6.7 C (44.1 F)	38 of 100 (Notable)
El Limon (Cfe)	Mexico	Record daily precipitation	85.9 mm (3.4 in)	37 of 100 (Notable)
Tres Zapotes	Mexico	Record low minimum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Viljujsk	Russia	Record high minimum temperature	19.1 C (66.4 F)	37 of 100 (Notable)
Achinsk	Russia	Record high minimum temperature	20.2 C (68.4 F)	37 of 100 (Notable)
Lubny	Ukraine	Record daily precipitation	45.1 mm (1.8 in)	37 of 100 (Notable)
Millinocket	United States	Record high maximum temperature	35.6 C (96.1 F)	37 of 100 (Notable)
Hutchinson 1 N	United States	Record low maximum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Hugo	United States	Record low minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Graterford 1 E	United States	Record high maximum temperature	41.1 C (106.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

900 records

Records set or tied on 18 July 1999 by type: Highest daily maximum 196, Lowest daily maximum 202, Highest daily minimum 154, Lowest daily minimum 100, Heaviest daily rainfall 247, Heaviest daily snowfall 1.

Records on 18 July 1999 by type
Record type	Records
Highest daily maximum	196
Lowest daily maximum	202
Highest daily minimum	154
Lowest daily minimum	100
Heaviest daily rainfall	247
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 18 July 1999 by timescale: all-time 6, monthly 22, daily 872.

How Much Records Were Beaten By

673 broken records

Margins by which the 673 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 99.3. Ties are not counted.

Top 20 by Significance

18 July 1999

Top 20 records on 18 July 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1999	Petropavlovsk-Kamchatskij, RU	daily rain	57.7 mm (2.3 in)	34.8 mm (1.4 in)	98 years	79 of 100 (Major)
18 July 1999	Osage, US	monthly rain	146.1 mm (5.8 in)	47.0 mm (1.9 in)	49 years	66 of 100 (Major)
18 July 1999	Tenosique (Smn), MX	daily low min	15.0 C (59.0 F)	5.0 C (9.0 F)	64 years	64 of 100 (Major)
18 July 1999	Wisconsin Rapids, US	daily rain	55.4 mm (2.2 in)	34.3 mm (1.4 in)	81 years	61 of 100 (Major)
18 July 1999	Fortine 1 N, US	daily rain	39.9 mm (1.6 in)	31.0 mm (1.2 in)	20 years	55 of 100 (Notable)
18 July 1999	Petropavlovskij Majak, RU	daily rain	64.4 mm (2.5 in)	36.5 mm (1.4 in)	4 years	51 of 100 (Notable)
18 July 1999	Billingsley, US	daily rain	104.1 mm (4.1 in)	46.2 mm (1.8 in)	52 years	49 of 100 (Notable)
18 July 1999	Hancock Exp Farm, US	daily rain	95.3 mm (3.8 in)	55.9 mm (2.2 in)	2 years	49 of 100 (Notable)
18 July 1999	Elephant Butte Dam, US	daily rain	30.5 mm (1.2 in)	10.2 mm (0.4 in)	84 years	48 of 100 (Notable)
18 July 1999	Presa Taxhimay, MX	daily high min	18.3 C (64.9 F)	5.0 C (9.0 F)	46 years	47 of 100 (Notable)
18 July 1999	Rainer Ohanapecosh, US	daily rain	29.0 mm (1.1 in)	21.9 mm (0.9 in)	2 years	47 of 100 (Notable)
18 July 1999	Eureka Rs, US	daily rain	27.7 mm (1.1 in)	20.1 mm (0.8 in)	20 years	46 of 100 (Notable)
18 July 1999	Bernardo, US	daily rain	28.4 mm (1.1 in)	24.1 mm (0.9 in)	32 years	46 of 100 (Notable)
18 July 1999	Bosque del Apache, US	daily rain	39.4 mm (1.6 in)	21.9 mm (0.9 in)	45 years	46 of 100 (Notable)
18 July 1999	Ixcateopan de Tlapa, MX	daily rain	63.8 mm (2.5 in)	32.8 mm (1.3 in)	20 years	45 of 100 (Notable)
18 July 1999	Colonia Alvaro Obregon, MX	daily rain	56.9 mm (2.2 in)	45.5 mm (1.8 in)	30 years	45 of 100 (Notable)
18 July 1999	Greencastle 1 W, US	daily rain	37.6 mm (1.5 in)	10.2 mm (0.4 in)	96 years	45 of 100 (Notable)
18 July 1999	Charlotteburg Rsvr, US	daily high max	37.8 C (100.0 F)	2.2 C (4.0 F)	98 years	45 of 100 (Notable)
18 July 1999	Alcalde, US	daily rain	30.5 mm (1.2 in)	16.5 mm (0.6 in)	45 years	45 of 100 (Notable)
18 July 1999	Bowie, US	daily low max	26.7 C (80.1 F)	3.3 C (5.9 F)	84 years	44 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 1999

Records set or tied on this calendar date in each year from 1793 to 1999. 1999 had 900 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 1999-07-18: 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	627
20 to 40	35
40 to 60	6
60 to 80	3
80 to 100	2