Weather Records on 17 October 2015

843 weather records were set or tied worldwide on 17 October 2015. Highest significance: Santa Barbara, US.

Key Facts for 17 October 2015

On 17 October 2015, 843 weather records were set or tied at long-record stations worldwide.
662 were record highs and 68 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 831 daily.
Santa Barbara set a daily record high minimum temperature of 20.6 C (69.1 F) on 17 October 2015.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 437 records.

Record Map

843 stations

843 station records on 17 October 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Santa Barbara	United States	Record high minimum temperature	20.6 C (69.1 F)	51 of 100 (Notable)
McDermitt	United States	Record high minimum temperature	7.8 C (46.0 F)	49 of 100 (Notable)
Elko Rgnl AP	United States	Record high minimum temperature	9.4 C (48.9 F)	48 of 100 (Notable)
Ft Valley	United States	Record high minimum temperature	7.8 C (46.0 F)	47 of 100 (Notable)
Chetumal Intl	Mexico	Record daily precipitation	140.2 mm (5.5 in)	44 of 100 (Notable)
Cedarville	United States	Record high minimum temperature	10.6 C (51.1 F)	43 of 100 (Notable)
Mecca Fire STN	United States	Record high minimum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Watsonville Wtr Wks	United States	Record high minimum temperature	17.2 C (63.0 F)	43 of 100 (Notable)
Levan	United States	Record high minimum temperature	11.7 C (53.1 F)	43 of 100 (Notable)
Kapoho Beach 93.11	United States	Record daily precipitation	89.7 mm (3.5 in)	43 of 100 (Notable)
Astara	Azerbaijan	Record daily precipitation	116.1 mm (4.6 in)	42 of 100 (Notable)
Susanville 2SW	United States	Record high minimum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Coeur D'Alene	United States	Record high minimum temperature	11.1 C (52.0 F)	42 of 100 (Notable)
Grants Pass	United States	Record high maximum temperature	30.6 C (87.1 F)	42 of 100 (Notable)
Visalia	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Yerington	United States	Record high minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Blaine	United States	Record high minimum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Old Faithful	United States	Record high maximum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Kalihi Rsch Site 777	United States	Record daily precipitation	61.7 mm (2.4 in)	41 of 100 (Notable)
Invercargill Airpor	New Zealand	Record daily precipitation	36.8 mm (1.4 in)	40 of 100 (Notable)
Keams Canyon	United States	Record high minimum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Portola	United States	Record high minimum temperature	7.8 C (46.0 F)	40 of 100 (Notable)
Leavenworth 3 S	United States	Record high maximum temperature	26.7 C (80.1 F)	40 of 100 (Notable)
Bay Minette	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Prescott	United States	Record high minimum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Colville	United States	Record high maximum temperature	23.9 C (75.0 F)	39 of 100 (Notable)
Alta 1 NNW	United States	Record high maximum temperature	22.8 C (73.0 F)	39 of 100 (Notable)
Tegucigalpa	Honduras	Record high maximum temperature	32.7 C (90.9 F)	38 of 100 (Notable)
Santa Cruz	United States	Record high minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Ft Lewis	United States	Record high minimum temperature	8.9 C (48.0 F)	38 of 100 (Notable)
Poplarville Exp STN	United States	Record high maximum temperature	33.3 C (91.9 F)	38 of 100 (Notable)
Rye Patch Dam	United States	Record high minimum temperature	11.7 C (53.1 F)	38 of 100 (Notable)
Howard Prairie Dam	United States	Record high minimum temperature	9.4 C (48.9 F)	38 of 100 (Notable)
Pauoa Flats 784	United States	Record daily precipitation	101.1 mm (4.0 in)	38 of 100 (Notable)
Siwa	Egypt	Record high maximum temperature	41.6 C (106.9 F)	37 of 100 (Notable)
Aberdeen Exp STN	United States	Record high maximum temperature	26.7 C (80.1 F)	37 of 100 (Notable)
Tahquamenon Falls Sp	United States	Record daily snowfall	8.9 cm (3.5 in)	37 of 100 (Notable)
Overton	United States	Record high minimum temperature	20.0 C (68.0 F)	36 of 100 (Notable)
Dubois	United States	Record high maximum temperature	26.1 C (79.0 F)	36 of 100 (Notable)
Long Beach Daugherty AP	United States	Record high minimum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Ketchikan AP	United States	Record high minimum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Bickleton	United States	Record high minimum temperature	11.1 C (52.0 F)	35 of 100 (Notable)
Wendover AP AWOS	United States	Record high minimum temperature	12.8 C (55.0 F)	35 of 100 (Notable)
Petersburg 1	United States	Record high minimum temperature	9.4 C (48.9 F)	35 of 100 (Notable)
Lindsay	United States	Record high minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Yreka	United States	Record high minimum temperature	11.7 C (53.1 F)	34 of 100 (Routine)
Winchester 7 SE	United States	Record low minimum temperature	-1.7 C (28.9 F)	34 of 100 (Routine)
Torrance AP	United States	Record high minimum temperature	20.6 C (69.1 F)	34 of 100 (Routine)
Santa Barbara Muni AP	United States	Record high minimum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
Imperial Beach Ream Fld NAS	United States	Record high minimum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Ouesso	Congo (Brazzaville)	Record high maximum temperature	34.6 C (94.3 F)	33 of 100 (Routine)
Felipe Carrillo Puerto (Obs)	Mexico	Record daily precipitation	78.5 mm (3.1 in)	33 of 100 (Routine)
Coalinga	United States	Record high minimum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Elsinore	United States	Record high minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Redwood City	United States	Record high minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Boyne Falls	United States	Record daily snowfall	6.4 cm (2.5 in)	33 of 100 (Routine)
Marshall	United States	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Ward Mountain	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Petersburg 1	United States	Record high maximum temperature	14.4 C (57.9 F)	33 of 100 (Routine)
Tarifa	Spain	Record high minimum temperature	20.3 C (68.5 F)	32 of 100 (Routine)

Counts by Type and Timescale

843 records

Records set or tied on 17 October 2015 by type: Highest daily maximum 259, Lowest daily maximum 26, Highest daily minimum 403, Lowest daily minimum 42, Heaviest daily rainfall 100, Heaviest daily snowfall 8, Deepest snow cover 5.

Records on 17 October 2015 by type
Record type	Records
Highest daily maximum	259
Lowest daily maximum	26
Highest daily minimum	403
Lowest daily minimum	42
Heaviest daily rainfall	100
Heaviest daily snowfall	8
Deepest snow cover	5

Records on 17 October 2015 by timescale: all-time 0, monthly 12, daily 831.

How Much Records Were Beaten By

660 broken records

Margins by which the 660 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 111.2. Ties are not counted.

Top 20 by Significance

17 October 2015

Top 20 records on 17 October 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 2015	Santa Barbara, US	daily high min	20.6 C (69.1 F)	3.4 C (6.1 F)	110 years	51 of 100 (Notable)
17 October 2015	McDermitt, US	daily high min	7.8 C (46.0 F)	5.0 C (9.0 F)	98 years	49 of 100 (Notable)
17 October 2015	Elko Rgnl AP, US	daily high min	9.4 C (48.9 F)	5.0 C (9.0 F)	90 years	48 of 100 (Notable)
17 October 2015	Ft Valley, US	daily high min	7.8 C (46.0 F)	3.4 C (6.1 F)	96 years	47 of 100 (Notable)
17 October 2015	Chetumal Intl, MX	daily rain	140.2 mm (5.5 in)	111.2 mm (4.4 in)	0 years	44 of 100 (Notable)
17 October 2015	Cedarville, US	daily high min	10.6 C (51.1 F)	2.8 C (5.0 F)	88 years	43 of 100 (Notable)
17 October 2015	Mecca Fire STN, US	daily high min	23.3 C (73.9 F)	2.7 C (4.9 F)	92 years	43 of 100 (Notable)
17 October 2015	Watsonville Wtr Wks, US	daily high min	17.2 C (63.0 F)	2.8 C (5.0 F)	85 years	43 of 100 (Notable)
17 October 2015	Levan, US	daily high min	11.7 C (53.1 F)	2.3 C (4.1 F)	93 years	43 of 100 (Notable)
17 October 2015	Kapoho Beach 93.11, US	daily rain	89.7 mm (3.5 in)	40.4 mm (1.6 in)	16 years	43 of 100 (Notable)
17 October 2015	Astara, AZ	monthly rain	116.1 mm (4.6 in)	16.9 mm (0.7 in)	56 years	42 of 100 (Notable)
17 October 2015	Susanville 2SW, US	daily high min	11.7 C (53.1 F)	1.1 C (2.0 F)	118 years	42 of 100 (Notable)
17 October 2015	Coeur D'Alene, US	daily high min	11.1 C (52.0 F)	1.1 C (2.0 F)	100 years	42 of 100 (Notable)
17 October 2015	Grants Pass, US	daily high max	30.6 C (87.1 F)	1.2 C (2.2 F)	112 years	42 of 100 (Notable)
17 October 2015	Visalia, US	daily high min	17.2 C (63.0 F)	0.5 C (0.9 F)	113 years	41 of 100 (Notable)
17 October 2015	Yerington, US	daily high min	10.6 C (51.1 F)	0.6 C (1.1 F)	100 years	41 of 100 (Notable)
17 October 2015	Blaine, US	daily high min	12.8 C (55.0 F)	0.6 C (1.1 F)	104 years	41 of 100 (Notable)
17 October 2015	Old Faithful, US	daily high max	21.1 C (70.0 F)	1.1 C (2.0 F)	108 years	41 of 100 (Notable)
17 October 2015	Kalihi Rsch Site 777, US	daily rain	61.7 mm (2.4 in)	28.7 mm (1.1 in)	58 years	41 of 100 (Notable)
17 October 2015	Invercargill Airpor, NZ	daily rain	36.8 mm (1.4 in)	21.8 mm (0.9 in)	24 years	40 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 2015

Records set or tied on this calendar date in each year from 1793 to 2015. 2015 had 843 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 2015-10-17: 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	643
20 to 40	10
40 to 60	5
60 to 80	1
80 to 100	0
100 to 120	1