Weather Records on 17 July 1999

925 weather records were set or tied worldwide on 17 July 1999. Highest significance: Hachita 1W, US.

Key Facts for 17 July 1999

On 17 July 1999, 925 weather records were set or tied at long-record stations worldwide.
359 were record highs and 291 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 29 monthly and 891 daily.
Hachita 1W set a monthly record daily precipitation of 91.7 mm (3.6 in) on 17 July 1999.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 442 records.

Record Map

925 stations

925 station records on 17 July 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 July 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hachita 1W	United States	Record daily precipitation	91.7 mm (3.6 in)	74 of 100 (Major)
Rocky Ford 2 SE	United States	Record daily precipitation	114.3 mm (4.5 in)	73 of 100 (Major)
Lindsborg 3E	United States	Record daily precipitation	89.9 mm (3.5 in)	63 of 100 (Major)
Lumpkin 2 SE	United States	Record daily precipitation	63.5 mm (2.5 in)	57 of 100 (Notable)
Longzhou	China	Record daily precipitation	153.6 mm (6.0 in)	56 of 100 (Notable)
Coupeville 1 S	United States	Record daily precipitation	26.7 mm (1.1 in)	55 of 100 (Notable)
Fowler 1 SE	United States	Record daily precipitation	43.4 mm (1.7 in)	54 of 100 (Notable)
Claflin	United States	Record daily precipitation	109.2 mm (4.3 in)	53 of 100 (Notable)
Munising	United States	Record daily precipitation	64.5 mm (2.5 in)	52 of 100 (Notable)
Rovaniemi Apukka	Finland	Record daily precipitation	33.5 mm (1.3 in)	50 of 100 (Notable)
Olinala (Cfe)	Mexico	Record daily precipitation	72.6 mm (2.9 in)	50 of 100 (Notable)
Ness City	United States	Record daily precipitation	69.3 mm (2.7 in)	50 of 100 (Notable)
Ixtapa (Cfe)	Mexico	Record daily precipitation	79.8 mm (3.1 in)	49 of 100 (Notable)
Clanton	United States	Record daily precipitation	86.9 mm (3.4 in)	49 of 100 (Notable)
Nachiki	Russia	Record daily precipitation	45.3 mm (1.8 in)	48 of 100 (Notable)
Elwha Rs	United States	Record daily precipitation	36.8 mm (1.4 in)	48 of 100 (Notable)
Suomussalmi Kk	Finland	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Nikolaevskoe	Russia	Record daily precipitation	57.9 mm (2.3 in)	46 of 100 (Notable)
Beaverhead R/S	United States	Record high minimum temperature	18.9 C (66.0 F)	46 of 100 (Notable)
Krasnyj Jar	Russia	Record daily precipitation	67.6 mm (2.7 in)	45 of 100 (Notable)
Eufaula Wildlife Ref	United States	Record daily precipitation	83.1 mm (3.3 in)	45 of 100 (Notable)
Greenville	United States	Record daily precipitation	70.1 mm (2.8 in)	45 of 100 (Notable)
Grant	United States	Record daily precipitation	37.6 mm (1.5 in)	45 of 100 (Notable)
Kadoka	United States	Record daily precipitation	62.5 mm (2.5 in)	45 of 100 (Notable)
Okeechobee	United States	Record daily precipitation	86.4 mm (3.4 in)	44 of 100 (Notable)
La Junta Muni AP	United States	Record daily precipitation	45.5 mm (1.8 in)	44 of 100 (Notable)
Hat Creek	United States	Record low minimum temperature	-0.6 C (30.9 F)	43 of 100 (Notable)
Hattiesburg 5SW	United States	Record low maximum temperature	26.7 C (80.1 F)	43 of 100 (Notable)
Mountainair	United States	Record daily precipitation	29.5 mm (1.2 in)	43 of 100 (Notable)
Taivalkoski Kk	Finland	Record daily precipitation	40.7 mm (1.6 in)	42 of 100 (Notable)
Tenosique (Smn)	Mexico	Record low minimum temperature	15.0 C (59.0 F)	42 of 100 (Notable)
Pearce - Sunsites	United States	Record low maximum temperature	23.9 C (75.0 F)	42 of 100 (Notable)
Geneseo	United States	Record daily precipitation	66.0 mm (2.6 in)	42 of 100 (Notable)
Eastport	United States	Record high maximum temperature	36.7 C (98.1 F)	42 of 100 (Notable)
Valier	United States	Record low minimum temperature	2.2 C (36.0 F)	42 of 100 (Notable)
Western 2W	United States	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Westfield 2 SSE	United States	Record high maximum temperature	34.4 C (93.9 F)	42 of 100 (Notable)
Eagle Butte	United States	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)
Ft Meade	United States	Record low maximum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Port Angeles	United States	Record daily precipitation	27.9 mm (1.1 in)	42 of 100 (Notable)
Cuautla (Smn)	Mexico	Record daily precipitation	62.5 mm (2.5 in)	41 of 100 (Notable)
Achinsk	Russia	Record high minimum temperature	19.9 C (67.8 F)	41 of 100 (Notable)
Big Timber	United States	Record low maximum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Panhandle	United States	Record daily precipitation	33.0 mm (1.3 in)	41 of 100 (Notable)
Rovaniemi Juotasniemi	Finland	Record daily precipitation	28.5 mm (1.1 in)	40 of 100 (Notable)
Rovaniemi Pirttikoski	Finland	Record daily precipitation	30.0 mm (1.2 in)	40 of 100 (Notable)
Centro Experimental W-75	Mexico	Record daily precipitation	122.9 mm (4.8 in)	40 of 100 (Notable)
Clarinda	United States	Record daily precipitation	63.5 mm (2.5 in)	40 of 100 (Notable)
Orono	United States	Record high minimum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Rochester	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Middletown 2 NW	United States	Record high maximum temperature	35.6 C (96.1 F)	40 of 100 (Notable)
Jackson	United States	Record low maximum temperature	20.6 C (69.1 F)	40 of 100 (Notable)
Vincent Vale	Australia	Record daily precipitation	44.4 mm (1.7 in)	39 of 100 (Notable)
Segeza	Russia	Record high maximum temperature	33.5 C (92.3 F)	39 of 100 (Notable)
Hamburg	United States	Record high maximum temperature	37.8 C (100.0 F)	39 of 100 (Notable)
Pollock	United States	Record low maximum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
Snoqualmie Falls	United States	Record low maximum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Ordway 4 W	United States	Record daily precipitation	60.5 mm (2.4 in)	38 of 100 (Notable)
McPherson	United States	Record daily precipitation	59.2 mm (2.3 in)	38 of 100 (Notable)
Blackleaf	United States	Record low minimum temperature	0.0 C (32.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

925 records

Records set or tied on 17 July 1999 by type: Highest daily maximum 201, Lowest daily maximum 159, Highest daily minimum 158, Lowest daily minimum 132, Heaviest daily rainfall 275.

Records on 17 July 1999 by type
Record type	Records
Highest daily maximum	201
Lowest daily maximum	159
Highest daily minimum	158
Lowest daily minimum	132
Heaviest daily rainfall	275
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 July 1999 by timescale: all-time 5, monthly 29, daily 891.

How Much Records Were Beaten By

716 broken records

Margins by which the 716 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 106.2. Ties are not counted.

Top 20 by Significance

17 July 1999

Top 20 records on 17 July 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 1999	Hachita 1W, US	monthly rain	91.7 mm (3.6 in)	35.8 mm (1.4 in)	54 years	74 of 100 (Major)
17 July 1999	Rocky Ford 2 SE, US	daily rain	114.3 mm (4.5 in)	86.4 mm (3.4 in)	78 years	73 of 100 (Major)
17 July 1999	Lindsborg 3E, US	daily rain	89.9 mm (3.5 in)	62.0 mm (2.4 in)	53 years	63 of 100 (Major)
17 July 1999	Lumpkin 2 SE, US	daily rain	63.5 mm (2.5 in)	29.5 mm (1.2 in)	104 years	57 of 100 (Notable)
17 July 1999	Longzhou, CN	daily rain	153.6 mm (6.0 in)	106.2 mm (4.2 in)	42 years	56 of 100 (Notable)
17 July 1999	Coupeville 1 S, US	daily rain	26.7 mm (1.1 in)	14.5 mm (0.6 in)	56 years	55 of 100 (Notable)
17 July 1999	Fowler 1 SE, US	daily rain	43.4 mm (1.7 in)	31.7 mm (1.2 in)	24 years	54 of 100 (Notable)
17 July 1999	Claflin, US	daily rain	109.2 mm (4.3 in)	73.4 mm (2.9 in)	20 years	53 of 100 (Notable)
17 July 1999	Munising, US	daily rain	64.5 mm (2.5 in)	24.6 mm (1.0 in)	72 years	52 of 100 (Notable)
17 July 1999	Rovaniemi Apukka, FI	daily rain	33.5 mm (1.3 in)	21.5 mm (0.8 in)	38 years	50 of 100 (Notable)
17 July 1999	Olinala (Cfe), MX	daily rain	72.6 mm (2.9 in)	39.8 mm (1.6 in)	34 years	50 of 100 (Notable)
17 July 1999	Ness City, US	daily rain	69.3 mm (2.7 in)	27.4 mm (1.1 in)	69 years	50 of 100 (Notable)
17 July 1999	Ixtapa (Cfe), MX	daily rain	79.8 mm (3.1 in)	51.9 mm (2.0 in)	20 years	49 of 100 (Notable)
17 July 1999	Clanton, US	daily rain	86.9 mm (3.4 in)	18.8 mm (0.7 in)	97 years	49 of 100 (Notable)
17 July 1999	Nachiki, RU	daily rain	45.3 mm (1.8 in)	20.7 mm (0.8 in)	57 years	48 of 100 (Notable)
17 July 1999	Elwha Rs, US	monthly rain	36.8 mm (1.4 in)	10.4 mm (0.4 in)	36 years	48 of 100 (Notable)
17 July 1999	Suomussalmi Kk, FI	daily rain	37.6 mm (1.5 in)	23.6 mm (0.9 in)	8 years	46 of 100 (Notable)
17 July 1999	Nikolaevskoe, RU	daily rain	57.9 mm (2.3 in)	28.8 mm (1.1 in)	12 years	46 of 100 (Notable)
17 July 1999	Beaverhead R/S, US	all-time high min	18.9 C (66.0 F)	1.1 C (2.0 F)	47 years	46 of 100 (Notable)
17 July 1999	Krasnyj Jar, RU	daily rain	67.6 mm (2.7 in)	40.3 mm (1.6 in)	28 years	45 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 925 records.

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

Records on 07-17 in each year
Year	Records
1793	1
1798	1
1799	1
1801	2
1802	1
1821	1
1827	1
1833	1
1840	1
1842	1
1845	2
1852	1
1862	1
1863	1
1865	2
1866	1
1871	1
1874	1
1875	2
1877	1
1880	1
1881	2
1882	2
1883	5
1884	1
1887	1
1888	2
1889	4
1890	4
1892	5
1893	3
1894	4
1895	1
1896	3
1897	1
1898	2
1899	4
1900	4
1901	6
1902	6
1903	13
1904	4
1905	9
1906	13
1907	12
1908	32
1909	16
1910	8
1911	52
1912	13
1913	26
1914	67
1915	71
1916	27
1917	62
1918	41
1919	45
1920	50
1921	120
1922	206
1923	105
1924	165
1925	275
1926	251
1927	118
1928	116
1929	154
1930	366
1931	492
1932	293
1933	216
1934	438
1935	245
1936	815
1937	313
1938	303
1939	540
1940	319
1941	386
1942	522
1943	321
1944	236
1945	681
1946	523
1947	505
1948	278
1949	405
1950	645
1951	356
1952	772
1953	557
1954	517
1955	512
1956	608
1957	298
1958	693
1959	631
1960	324
1961	408
1962	421
1963	223
1964	481
1965	753
1966	454
1967	965
1968	707
1969	741
1970	486
1971	790
1972	634
1973	680
1974	691
1975	775
1976	1,041
1977	764
1978	794
1979	642
1980	1,137
1981	628
1982	850
1983	1,120
1984	875
1985	483
1986	1,214
1987	1,388
1988	1,239
1989	1,289
1990	953
1991	763
1992	1,055
1993	956
1994	631
1995	917
1996	911
1997	816
1998	1,031
1999	925
2000	1,166
2001	916
2002	995
2003	1,396
2004	908
2005	1,184
2006	1,509
2007	1,218
2008	508
2009	1,218
2010	965
2011	1,101
2012	934
2013	819
2014	1,456
2015	831
2016	679
2017	398
2018	750
2019	477
2020	515
2021	625
2022	791
2023	1,060
2024	814
2025	966
2026	860

Download the Data

Data for records on 1999-07-17: 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	659
20 to 40	49
40 to 60	4
60 to 80	2
80 to 100	1
100 to 120	1