Weather Records on 17 July 1986

1,214 weather records were set or tied worldwide on 17 July 1986. Highest significance: Tonichi, MX.

Key Facts for 17 July 1986

On 17 July 1986, 1,214 weather records were set or tied at long-record stations worldwide.
336 were record highs and 504 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 50 monthly and 1,161 daily.
Tonichi set an all-time record daily precipitation of 209.8 mm (8.3 in) on 17 July 1986.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 440 records.

Record Map

1,214 stations

1,214 station records on 17 July 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 July 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tonichi	Mexico	Record daily precipitation	209.8 mm (8.3 in)	74 of 100 (Major)
Goonoo Goonoo Station	Australia	Record daily precipitation	73.1 mm (2.9 in)	72 of 100 (Major)
Breeza (the Park)	Australia	Record daily precipitation	100.2 mm (3.9 in)	69 of 100 (Major)
Boggabri (Milchengowrie)	Australia	Record daily precipitation	56.4 mm (2.2 in)	65 of 100 (Major)
Walcha Post Office	Australia	Record daily precipitation	68.8 mm (2.7 in)	64 of 100 (Major)
Carroll (the Ranch)	Australia	Record daily precipitation	61.0 mm (2.4 in)	63 of 100 (Major)
Kelvin (Carellan)	Australia	Record daily precipitation	68.8 mm (2.7 in)	63 of 100 (Major)
Somerton (Bective Estate)	Australia	Record daily precipitation	54.0 mm (2.1 in)	61 of 100 (Major)
Boggabri Post Office	Australia	Record daily precipitation	59.0 mm (2.3 in)	61 of 100 (Major)
Winton (Nioka)	Australia	Record daily precipitation	83.0 mm (3.3 in)	60 of 100 (Major)
Weabonga (Stoneleigh)	Australia	Record daily precipitation	70.8 mm (2.8 in)	59 of 100 (Notable)
Mullaley Post Office	Australia	Record daily precipitation	50.4 mm (2.0 in)	58 of 100 (Notable)
Walcha (Emu Creek)	Australia	Record daily precipitation	65.2 mm (2.6 in)	58 of 100 (Notable)
Nundle Post Office	Australia	Record daily precipitation	64.0 mm (2.5 in)	56 of 100 (Notable)
Boggabri (Penryn)	Australia	Record daily precipitation	47.4 mm (1.9 in)	56 of 100 (Notable)
Gwabegar Post Office	Australia	Record daily precipitation	61.4 mm (2.4 in)	55 of 100 (Notable)
Weabonga (Monomeeth)	Australia	Record daily precipitation	73.4 mm (2.9 in)	55 of 100 (Notable)
Gowrie North	Australia	Record daily precipitation	73.2 mm (2.9 in)	55 of 100 (Notable)
Uralla (Dumaresq St)	Australia	Record daily precipitation	61.0 mm (2.4 in)	55 of 100 (Notable)
Williston Sloulin Fld	United States	Record daily precipitation	71.6 mm (2.8 in)	55 of 100 (Notable)
Mullaley (Bando)	Australia	Record daily precipitation	36.0 mm (1.4 in)	54 of 100 (Notable)
Breeza (Main Street)	Australia	Record daily precipitation	56.0 mm (2.2 in)	54 of 100 (Notable)
Walcha (Karori)	Australia	Record daily precipitation	48.4 mm (1.9 in)	54 of 100 (Notable)
Gunnedah Resource Centre	Australia	Record daily precipitation	89.2 mm (3.5 in)	53 of 100 (Notable)
Tamworth Airport	Australia	Record daily precipitation	77.8 mm (3.1 in)	53 of 100 (Notable)
Attunga (Garthowen)	Australia	Record daily precipitation	58.4 mm (2.3 in)	52 of 100 (Notable)
Curlewis Post Office	Australia	Record daily precipitation	68.0 mm (2.7 in)	52 of 100 (Notable)
Gunnedah Pool	Australia	Record daily precipitation	81.0 mm (3.2 in)	52 of 100 (Notable)
Uralla (Salisbury Court)	Australia	Record daily precipitation	45.5 mm (1.8 in)	52 of 100 (Notable)
Ft Assiniboine	United States	Record daily precipitation	44.5 mm (1.8 in)	52 of 100 (Notable)
Green River Aviation	United States	Record daily precipitation	25.1 mm (1.0 in)	52 of 100 (Notable)
Curlewis (Pine Cliff)	Australia	Record daily precipitation	59.2 mm (2.3 in)	51 of 100 (Notable)
West Wyalong (Tallimbalong)	Australia	Record daily precipitation	26.8 mm (1.1 in)	51 of 100 (Notable)
Emmett 2 E	United States	Record low maximum temperature	18.9 C (66.0 F)	51 of 100 (Notable)
Tioga 1E	United States	Record daily precipitation	71.9 mm (2.8 in)	51 of 100 (Notable)
Bowling Alley Point (Poplars)	Australia	Record daily precipitation	66.6 mm (2.6 in)	49 of 100 (Notable)
Culcairn Bowling Club	Australia	Record daily precipitation	39.4 mm (1.6 in)	49 of 100 (Notable)
Bendemeer (Caroline St)	Australia	Record daily precipitation	57.6 mm (2.3 in)	48 of 100 (Notable)
Uralla (Mihi)	Australia	Record daily precipitation	46.0 mm (1.8 in)	48 of 100 (Notable)
Manilla Post Office	Australia	Record daily precipitation	58.0 mm (2.3 in)	47 of 100 (Notable)
Prilep	Macedonia	Record daily precipitation	37.2 mm (1.5 in)	47 of 100 (Notable)
Gowanda Correctional	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Shemya USAF Base	United States	Record daily precipitation	37.6 mm (1.5 in)	47 of 100 (Notable)
Glendive	United States	Record daily precipitation	39.1 mm (1.5 in)	46 of 100 (Notable)
Amidon	United States	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Walgett Council Depot	Australia	Record daily precipitation	31.0 mm (1.2 in)	45 of 100 (Notable)
Brackendale (the Lake)	Australia	Record daily precipitation	60.2 mm (2.4 in)	45 of 100 (Notable)
Deal Island	Australia	Record daily precipitation	38.4 mm (1.5 in)	45 of 100 (Notable)
Presa Francisco I. Madero	Mexico	Record daily precipitation	39.9 mm (1.6 in)	45 of 100 (Notable)
Koror	Palau	Record daily precipitation	136.4 mm (5.4 in)	45 of 100 (Notable)
Premer Post Office	Australia	Record daily precipitation	46.6 mm (1.8 in)	44 of 100 (Notable)
P-Ranch South Place	United States	Record low minimum temperature	-0.6 C (30.9 F)	44 of 100 (Notable)
Kelvin (Kahana)	Australia	Record daily precipitation	79.0 mm (3.1 in)	43 of 100 (Notable)
Warren	United States	Record low maximum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Paradise Valley 1 NW	United States	Record low minimum temperature	-1.1 C (30.0 F)	43 of 100 (Notable)
Quambone (Sandy Camp)	Australia	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Wuhan	China	Record daily precipitation	109.8 mm (4.3 in)	42 of 100 (Notable)
New Meadows Rs	United States	Record low maximum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
Chatom	United States	Record daily precipitation	94.0 mm (3.7 in)	41 of 100 (Notable)
Cedar Lake	United States	Record daily precipitation	37.1 mm (1.5 in)	41 of 100 (Notable)

Counts by Type and Timescale

1,214 records

Records set or tied on 17 July 1986 by type: Highest daily maximum 121, Lowest daily maximum 272, Highest daily minimum 215, Lowest daily minimum 232, Heaviest daily rainfall 374.

Records on 17 July 1986 by type
Record type	Records
Highest daily maximum	121
Lowest daily maximum	272
Highest daily minimum	215
Lowest daily minimum	232
Heaviest daily rainfall	374
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 July 1986 by timescale: all-time 3, monthly 50, daily 1,161.

How Much Records Were Beaten By

945 broken records

Margins by which the 945 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 90.4. Ties are not counted.

Top 20 by Significance

17 July 1986

Top 20 records on 17 July 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 1986	Tonichi, MX	all-time rain	209.8 mm (8.3 in)	82.8 mm (3.3 in)	36 years	74 of 100 (Major)
17 July 1986	Goonoo Goonoo Station, AU	daily rain	73.1 mm (2.9 in)	53.8 mm (2.1 in)	73 years	72 of 100 (Major)
17 July 1986	Breeza (the Park), AU	monthly rain	100.2 mm (3.9 in)	41.3 mm (1.6 in)	44 years	69 of 100 (Major)
17 July 1986	Boggabri (Milchengowrie), AU	daily rain	56.4 mm (2.2 in)	24.4 mm (1.0 in)	92 years	65 of 100 (Major)
17 July 1986	Walcha Post Office, AU	daily rain	68.8 mm (2.7 in)	33.0 mm (1.3 in)	49 years	64 of 100 (Major)
17 July 1986	Carroll (the Ranch), AU	daily rain	61.0 mm (2.4 in)	37.1 mm (1.5 in)	49 years	63 of 100 (Major)
17 July 1986	Kelvin (Carellan), AU	monthly rain	68.8 mm (2.7 in)	23.3 mm (0.9 in)	53 years	63 of 100 (Major)
17 July 1986	Somerton (Bective Estate), AU	daily rain	54.0 mm (2.1 in)	30.4 mm (1.2 in)	49 years	61 of 100 (Major)
17 July 1986	Boggabri Post Office, AU	daily rain	59.0 mm (2.3 in)	33.9 mm (1.3 in)	49 years	61 of 100 (Major)
17 July 1986	Winton (Nioka), AU	monthly rain	83.0 mm (3.3 in)	27.9 mm (1.1 in)	44 years	60 of 100 (Major)
17 July 1986	Weabonga (Stoneleigh), AU	daily rain	70.8 mm (2.8 in)	37.8 mm (1.5 in)	49 years	59 of 100 (Notable)
17 July 1986	Mullaley Post Office, AU	daily rain	50.4 mm (2.0 in)	30.8 mm (1.2 in)	60 years	58 of 100 (Notable)
17 July 1986	Walcha (Emu Creek), AU	monthly rain	65.2 mm (2.6 in)	27.1 mm (1.1 in)	24 years	58 of 100 (Notable)
17 July 1986	Nundle Post Office, AU	daily rain	64.0 mm (2.5 in)	35.6 mm (1.4 in)	49 years	56 of 100 (Notable)
17 July 1986	Boggabri (Penryn), AU	daily rain	47.4 mm (1.9 in)	35.2 mm (1.4 in)	33 years	56 of 100 (Notable)
17 July 1986	Gwabegar Post Office, AU	daily rain	61.4 mm (2.4 in)	40.6 mm (1.6 in)	33 years	55 of 100 (Notable)
17 July 1986	Weabonga (Monomeeth), AU	monthly rain	73.4 mm (2.9 in)	15.0 mm (0.6 in)	70 years	55 of 100 (Notable)
17 July 1986	Gowrie North, AU	monthly rain	73.2 mm (2.9 in)	34.4 mm (1.4 in)	8 years	55 of 100 (Notable)
17 July 1986	Uralla (Dumaresq St), AU	daily rain	61.0 mm (2.4 in)	27.7 mm (1.1 in)	49 years	55 of 100 (Notable)
17 July 1986	Williston Sloulin Fld, US	daily rain	71.6 mm (2.8 in)	30.5 mm (1.2 in)	40 years	55 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 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 1,214 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 1986-07-17: 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	894
20 to 40	41
40 to 60	6
60 to 80	1
80 to 100	3