Weather Records on 17 October 1987

828 weather records were set or tied worldwide on 17 October 1987. Highest significance: Caloundra Signal Station, AU.

Key Facts for 17 October 1987

On 17 October 1987, 828 weather records were set or tied at long-record stations worldwide.
333 were record highs and 157 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 37 monthly and 791 daily.
Caloundra Signal Station set a daily record precipitation of 111.0 mm (4.4 in) on 17 October 1987.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 437 records.

Record Map

828 stations

828 station records on 17 October 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Caloundra Signal Station	Australia	Record daily precipitation	111.0 mm (4.4 in)	63 of 100 (Major)
Landsborough Post Office	Australia	Record daily precipitation	202.6 mm (8.0 in)	57 of 100 (Notable)
Marinette	United States	Record daily precipitation	35.6 mm (1.4 in)	54 of 100 (Notable)
Lindfield	Australia	Record daily precipitation	85.0 mm (3.3 in)	53 of 100 (Notable)
Oberon (Springbank)	Australia	Record daily precipitation	39.2 mm (1.5 in)	52 of 100 (Notable)
Grandchester Symes St	Australia	Record daily precipitation	83.6 mm (3.3 in)	51 of 100 (Notable)
Gallangowan Forestry	Australia	Record daily precipitation	83.9 mm (3.3 in)	51 of 100 (Notable)
Balgownie West	Australia	Record daily precipitation	84.6 mm (3.3 in)	51 of 100 (Notable)
Yonago	Japan	Record daily precipitation	111.0 mm (4.4 in)	51 of 100 (Notable)
Samsonvale	Australia	Record daily precipitation	116.6 mm (4.6 in)	50 of 100 (Notable)
Salisbury Bowls Club	Australia	Record daily precipitation	77.6 mm (3.1 in)	50 of 100 (Notable)
Kenilworth Township	Australia	Record daily precipitation	108.0 mm (4.3 in)	49 of 100 (Notable)
Sturgeon Bay Exp Farm	United States	Record daily precipitation	31.2 mm (1.2 in)	49 of 100 (Notable)
Tarong	Australia	Record daily precipitation	104.6 mm (4.1 in)	48 of 100 (Notable)
Beaver Is	United States	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Emerald Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	45 of 100 (Notable)
Coorparoo Bowls Club	Australia	Record daily precipitation	84.0 mm (3.3 in)	45 of 100 (Notable)
Taabinga	Australia	Record daily precipitation	94.0 mm (3.7 in)	45 of 100 (Notable)
Belah Park	Australia	Record daily precipitation	66.0 mm (2.6 in)	45 of 100 (Notable)
Saigo	Japan	Record daily precipitation	104.5 mm (4.1 in)	45 of 100 (Notable)
Himeji	Japan	Record daily precipitation	120.0 mm (4.7 in)	45 of 100 (Notable)
Lowood Don St	Australia	Record daily precipitation	74.0 mm (2.9 in)	44 of 100 (Notable)
Mt Brisbane	Australia	Record daily precipitation	78.4 mm (3.1 in)	44 of 100 (Notable)
Enoggera Reservoir	Australia	Record daily precipitation	78.0 mm (3.1 in)	44 of 100 (Notable)
Nukinenda	Australia	Record daily precipitation	70.0 mm (2.8 in)	44 of 100 (Notable)
Back Plains	Australia	Record daily precipitation	72.4 mm (2.9 in)	44 of 100 (Notable)
Casterton (Warrock)	Australia	Record daily precipitation	29.0 mm (1.1 in)	44 of 100 (Notable)
Duaringa Post Office	Australia	Record daily precipitation	44.0 mm (1.7 in)	43 of 100 (Notable)
Hattonvale Store	Australia	Record daily precipitation	84.0 mm (3.3 in)	43 of 100 (Notable)
Ipswich	Australia	Record daily precipitation	84.2 mm (3.3 in)	43 of 100 (Notable)
Kumbia Post Office	Australia	Record daily precipitation	92.6 mm (3.6 in)	43 of 100 (Notable)
Tajima	Japan	Record daily precipitation	103.5 mm (4.1 in)	43 of 100 (Notable)
University of Queensland Gatto	Australia	Record daily precipitation	77.6 mm (3.1 in)	42 of 100 (Notable)
Lake Manchester	Australia	Record daily precipitation	82.2 mm (3.2 in)	42 of 100 (Notable)
Mt Crosby	Australia	Record daily precipitation	83.8 mm (3.3 in)	42 of 100 (Notable)
Rennick	Australia	Record daily precipitation	40.4 mm (1.6 in)	42 of 100 (Notable)
Washington Is	United States	Record daily precipitation	49.0 mm (1.9 in)	42 of 100 (Notable)
Somerset Dam	Australia	Record daily precipitation	90.0 mm (3.5 in)	41 of 100 (Notable)
Boggabri (Penryn)	Australia	Record daily precipitation	36.6 mm (1.4 in)	41 of 100 (Notable)
Tottori	Japan	Record daily precipitation	77.5 mm (3.1 in)	41 of 100 (Notable)
Canungra Finch Road	Australia	Record daily precipitation	69.6 mm (2.7 in)	40 of 100 (Notable)
Toowong Bowls Club	Australia	Record daily precipitation	85.6 mm (3.4 in)	40 of 100 (Notable)
Ibukiyama Mtn (Aut)	Japan	Record daily precipitation	70.0 mm (2.8 in)	40 of 100 (Notable)
Amberley AMO	Australia	Record daily precipitation	87.4 mm (3.4 in)	39 of 100 (Notable)
Conondale Township	Australia	Record daily precipitation	92.8 mm (3.7 in)	39 of 100 (Notable)
Laidley Post Office	Australia	Record daily precipitation	73.8 mm (2.9 in)	39 of 100 (Notable)
Brisbane Regional Office	Australia	Record daily precipitation	83.6 mm (3.3 in)	39 of 100 (Notable)
Sunnybank Bowls Club	Australia	Record daily precipitation	75.4 mm (3.0 in)	39 of 100 (Notable)
McKenzie Creek	Australia	Record daily precipitation	94.4 mm (3.7 in)	39 of 100 (Notable)
Thallon Post Office	Australia	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Takamatsu	Japan	Record daily precipitation	70.5 mm (2.8 in)	39 of 100 (Notable)
Cross Village 1E	United States	Record daily precipitation	33.5 mm (1.3 in)	39 of 100 (Notable)
Murarrie Road Csiro	Australia	Record daily precipitation	71.2 mm (2.8 in)	38 of 100 (Notable)
Mandurama (Gallymont (Homeleig	Australia	Record daily precipitation	32.8 mm (1.3 in)	38 of 100 (Notable)
Drik Drik	Australia	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Kushiro	Japan	Record daily precipitation	86.0 mm (3.4 in)	38 of 100 (Notable)
Kvikkjokk-Arrenjarka	Sweden	Record high minimum temperature	8.2 C (46.8 F)	38 of 100 (Notable)
Sveg	Sweden	Record high minimum temperature	8.2 C (46.8 F)	38 of 100 (Notable)
Sundance	United States	Record daily snowfall	10.2 cm (4.0 in)	38 of 100 (Notable)
Bruff Hill	Australia	Record daily precipitation	65.2 mm (2.6 in)	37 of 100 (Notable)

Counts by Type and Timescale

828 records

Records set or tied on 17 October 1987 by type: Highest daily maximum 143, Lowest daily maximum 35, Highest daily minimum 190, Lowest daily minimum 122, Heaviest daily rainfall 334, Heaviest daily snowfall 2, Deepest snow cover 2.

Records on 17 October 1987 by type
Record type	Records
Highest daily maximum	143
Lowest daily maximum	35
Highest daily minimum	190
Lowest daily minimum	122
Heaviest daily rainfall	334
Heaviest daily snowfall	2
Deepest snow cover	2

Records on 17 October 1987 by timescale: all-time 0, monthly 37, daily 791.

How Much Records Were Beaten By

730 broken records

Margins by which the 730 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 87.5. Ties are not counted.

Top 20 by Significance

17 October 1987

Top 20 records on 17 October 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 1987	Caloundra Signal Station, AU	daily rain	111.0 mm (4.4 in)	52.6 mm (2.1 in)	66 years	63 of 100 (Major)
17 October 1987	Landsborough Post Office, AU	daily rain	202.6 mm (8.0 in)	87.5 mm (3.4 in)	28 years	57 of 100 (Notable)
17 October 1987	Marinette, US	daily rain	35.6 mm (1.4 in)	25.2 mm (1.0 in)	64 years	54 of 100 (Notable)
17 October 1987	Lindfield, AU	daily rain	85.0 mm (3.3 in)	43.9 mm (1.7 in)	44 years	53 of 100 (Notable)
17 October 1987	Oberon (Springbank), AU	daily rain	39.2 mm (1.5 in)	15.3 mm (0.6 in)	94 years	52 of 100 (Notable)
17 October 1987	Grandchester Symes St, AU	daily rain	83.6 mm (3.3 in)	44.0 mm (1.7 in)	32 years	51 of 100 (Notable)
17 October 1987	Gallangowan Forestry, AU	daily rain	83.9 mm (3.3 in)	45.5 mm (1.8 in)	28 years	51 of 100 (Notable)
17 October 1987	Balgownie West, AU	daily rain	84.6 mm (3.3 in)	37.1 mm (1.5 in)	28 years	51 of 100 (Notable)
17 October 1987	Yonago, JP	daily rain	111.0 mm (4.4 in)	67.9 mm (2.7 in)	28 years	51 of 100 (Notable)
17 October 1987	Samsonvale, AU	daily rain	116.6 mm (4.6 in)	53.4 mm (2.1 in)	32 years	50 of 100 (Notable)
17 October 1987	Salisbury Bowls Club, AU	daily rain	77.6 mm (3.1 in)	41.3 mm (1.6 in)	28 years	50 of 100 (Notable)
17 October 1987	Kenilworth Township, AU	daily rain	108.0 mm (4.3 in)	44.8 mm (1.8 in)	28 years	49 of 100 (Notable)
17 October 1987	Sturgeon Bay Exp Farm, US	daily rain	31.2 mm (1.2 in)	16.7 mm (0.7 in)	73 years	49 of 100 (Notable)
17 October 1987	Tarong, AU	monthly rain	104.6 mm (4.1 in)	32.0 mm (1.3 in)	27 years	48 of 100 (Notable)
17 October 1987	Beaver Is, US	daily rain	41.9 mm (1.6 in)	14.0 mm (0.6 in)	76 years	47 of 100 (Notable)
17 October 1987	Emerald Post Office, AU	daily rain	32.0 mm (1.3 in)	13.5 mm (0.5 in)	78 years	45 of 100 (Notable)
17 October 1987	Coorparoo Bowls Club, AU	daily rain	84.0 mm (3.3 in)	41.8 mm (1.6 in)	28 years	45 of 100 (Notable)
17 October 1987	Taabinga, AU	daily rain	94.0 mm (3.7 in)	41.9 mm (1.6 in)	32 years	45 of 100 (Notable)
17 October 1987	Belah Park, AU	daily rain	66.0 mm (2.6 in)	22.3 mm (0.9 in)	66 years	45 of 100 (Notable)
17 October 1987	Saigo, JP	daily rain	104.5 mm (4.1 in)	50.6 mm (2.0 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 1987

Records set or tied on this calendar date in each year from 1793 to 1987. 1987 had 828 records.

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

Records on 10-17 in each year
Year	Records
1793	1
1796	2
1808	2
1810	1
1811	1
1817	1
1820	1
1830	1
1836	1
1844	1
1845	1
1868	1
1869	2
1870	1
1872	1
1874	1
1875	1
1876	3
1877	1
1878	1
1879	7
1881	1
1882	1
1883	1
1884	2
1885	2
1886	1
1889	1
1890	3
1891	2
1892	6
1893	5
1894	2
1895	1
1897	3
1898	6
1899	3
1900	3
1901	3
1902	4
1903	9
1904	17
1905	12
1906	3
1907	16
1908	46
1909	18
1910	13
1911	24
1912	12
1913	26
1914	72
1915	7
1916	81
1917	29
1918	20
1919	34
1920	82
1921	64
1922	60
1923	149
1924	81
1925	324
1926	153
1927	163
1928	530
1929	119
1930	441
1931	431
1932	345
1933	190
1934	262
1935	337
1936	338
1937	865
1938	710
1939	424
1940	580
1941	194
1942	349
1943	1,173
1944	415
1945	289
1946	437
1947	744
1948	724
1949	442
1950	809
1951	274
1952	474
1953	463
1954	579
1955	562
1956	353
1957	245
1958	415
1959	403
1960	432
1961	525
1962	350
1963	513
1964	492
1965	920
1966	551
1967	576
1968	929
1969	714
1970	815
1971	1,053
1972	866
1973	542
1974	1,055
1975	605
1976	1,381
1977	1,060
1978	583
1979	468
1980	1,366
1981	555
1982	575
1983	526
1984	1,551
1985	585
1986	354
1987	828
1988	827
1989	1,163
1990	1,109
1991	1,352
1992	1,384
1993	1,001
1994	1,306
1995	1,076
1996	987
1997	1,114
1998	1,455
1999	815
2000	461
2001	878
2002	992
2003	764
2004	935
2005	643
2006	1,506
2007	690
2008	467
2009	1,606
2010	625
2011	734
2012	550
2013	516
2014	530
2015	843
2016	1,559
2017	743
2018	1,163
2019	504
2020	889
2021	294
2022	964
2023	544
2024	994
2025	363

Download the Data

Data for records on 1987-10-17: 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	647
20 to 40	60
40 to 60	19
60 to 80	2
80 to 100	2