Weather Records on 17 October 1984

1,551 weather records were set or tied worldwide on 17 October 1984. Highest significance: Coalville, US.

Key Facts for 17 October 1984

On 17 October 1984, 1,551 weather records were set or tied at long-record stations worldwide.
307 were record highs and 524 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 90 monthly and 1,460 daily.
Coalville set a daily record snowfall of 20.3 cm (8.0 in) on 17 October 1984.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 433 records.

Record Map

1,551 stations

1,551 station records on 17 October 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Coalville	United States	Record daily snowfall	20.3 cm (8.0 in)	75 of 100 (Major)
Santa Cruz	United States	Record daily precipitation	76.2 mm (3.0 in)	70 of 100 (Major)
Snake Creek Powerhouse	United States	Record snow depth	27.9 cm (11.0 in)	70 of 100 (Major)
Clover Valley	United States	Record daily snowfall	27.9 cm (11.0 in)	68 of 100 (Major)
Manti	United States	Record daily snowfall	15.2 cm (6.0 in)	68 of 100 (Major)
Beaver	United States	Record daily snowfall	15.2 cm (6.0 in)	61 of 100 (Major)
Sibley	United States	Record daily snowfall	10.2 cm (4.0 in)	60 of 100 (Major)
Loa	United States	Record daily snowfall	12.7 cm (5.0 in)	60 of 100 (Major)
Bailey	United States	Record snow depth	35.6 cm (14.0 in)	57 of 100 (Notable)
Koosharem	United States	Record daily snowfall	10.2 cm (4.0 in)	56 of 100 (Notable)
Minersville	United States	Record daily snowfall	14.0 cm (5.5 in)	56 of 100 (Notable)
Tacoma	United States	Record daily snowfall	35.6 cm (14.0 in)	54 of 100 (Notable)
Beowawe	United States	Record daily snowfall	12.7 cm (5.0 in)	54 of 100 (Notable)
Chama	United States	Record daily snowfall	27.9 cm (11.0 in)	54 of 100 (Notable)
Guffey 10 SE	United States	Record snow depth	30.5 cm (12.0 in)	53 of 100 (Notable)
Swan Lake	United States	Record daily precipitation	80.0 mm (3.1 in)	53 of 100 (Notable)
Litang	China	Record daily precipitation	29.2 mm (1.1 in)	51 of 100 (Notable)
Susanville 2SW	United States	Record daily snowfall	7.6 cm (3.0 in)	51 of 100 (Notable)
Simmesport	United States	Record daily precipitation	91.4 mm (3.6 in)	51 of 100 (Notable)
Payson	United States	Record daily snowfall	10.2 cm (4.0 in)	51 of 100 (Notable)
Pineview Dam	United States	Record daily snowfall	17.8 cm (7.0 in)	51 of 100 (Notable)
Bream Creek (Stroud)	Australia	Record daily precipitation	39.0 mm (1.5 in)	50 of 100 (Notable)
Galesburg	United States	Record daily precipitation	40.6 mm (1.6 in)	50 of 100 (Notable)
Stillwater 1 SE	United States	Record daily precipitation	40.9 mm (1.6 in)	50 of 100 (Notable)
Tierra Amarilla 4 N	United States	Record daily snowfall	20.3 cm (8.0 in)	50 of 100 (Notable)
Deer Creek Dam	United States	Record daily snowfall	20.3 cm (8.0 in)	49 of 100 (Notable)
Morgan	United States	Record daily snowfall	10.2 cm (4.0 in)	49 of 100 (Notable)
Vernal	United States	Record daily snowfall	10.2 cm (4.0 in)	49 of 100 (Notable)
Ft Lewis	United States	Record daily snowfall	10.7 cm (4.2 in)	48 of 100 (Notable)
Chama	United States	Record snow depth	27.9 cm (11.0 in)	48 of 100 (Notable)
Heber	United States	Record daily snowfall	22.9 cm (9.0 in)	48 of 100 (Notable)
Breona	Australia	Record daily precipitation	68.2 mm (2.7 in)	47 of 100 (Notable)
Pagosa Springs 1SE	United States	Record daily snowfall	12.7 cm (5.0 in)	47 of 100 (Notable)
New Iberia AP - Acadiana Rgnl	United States	Record daily precipitation	96.5 mm (3.8 in)	47 of 100 (Notable)
Greenville	United States	Record daily precipitation	116.3 mm (4.6 in)	47 of 100 (Notable)
Dixon Wwtp	United States	Record daily precipitation	45.7 mm (1.8 in)	46 of 100 (Notable)
Petaluma AP	United States	Record daily precipitation	27.7 mm (1.1 in)	45 of 100 (Notable)
Cheesman	United States	Record snow depth	33.0 cm (13.0 in)	45 of 100 (Notable)
Tower 2S	United States	Record daily precipitation	43.2 mm (1.7 in)	45 of 100 (Notable)
El Vado Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Hayes Center 1NW	United States	Record daily snowfall	5.1 cm (2.0 in)	45 of 100 (Notable)
Silverton	United States	Record daily snowfall	18.3 cm (7.2 in)	44 of 100 (Notable)
American Falls 6 NE	United States	Record daily snowfall	5.1 cm (2.0 in)	44 of 100 (Notable)
Abbeville	United States	Record daily precipitation	81.3 mm (3.2 in)	44 of 100 (Notable)
Willow Sprg Radio Kuku	United States	Record daily precipitation	45.7 mm (1.8 in)	44 of 100 (Notable)
Glenorchy (Glenorchy Reservoir	Australia	Record daily precipitation	45.8 mm (1.8 in)	43 of 100 (Notable)
Stockton Fire STN 4	United States	Record daily precipitation	29.5 mm (1.2 in)	43 of 100 (Notable)
Forest City 2 NNE	United States	Record daily precipitation	32.5 mm (1.3 in)	43 of 100 (Notable)
Oberlin Fire Twr	United States	Record daily precipitation	131.8 mm (5.2 in)	43 of 100 (Notable)
Boonville	United States	Record daily precipitation	64.5 mm (2.5 in)	43 of 100 (Notable)
Golconda	United States	Record daily snowfall	10.2 cm (4.0 in)	43 of 100 (Notable)
Lovelock	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)
Canyon Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	42 of 100 (Notable)
Kassler	United States	Record snow depth	27.9 cm (11.0 in)	42 of 100 (Notable)
Albert Lea 3SE	United States	Record daily precipitation	38.9 mm (1.5 in)	42 of 100 (Notable)
Sandy Lake Dam Libby	United States	Record daily precipitation	52.6 mm (2.1 in)	42 of 100 (Notable)
Black Rock	United States	Record low maximum temperature	4.4 C (39.9 F)	42 of 100 (Notable)
Duchesne	United States	Record daily snowfall	6.4 cm (2.5 in)	42 of 100 (Notable)
Snug Primary School	Australia	Record daily precipitation	37.0 mm (1.5 in)	41 of 100 (Notable)
Fountain	United States	Record snow depth	27.9 cm (11.0 in)	41 of 100 (Notable)

Counts by Type and Timescale

1,551 records

Records set or tied on 17 October 1984 by type: Highest daily maximum 149, Lowest daily maximum 362, Highest daily minimum 158, Lowest daily minimum 162, Heaviest daily rainfall 451, Heaviest daily snowfall 147, Deepest snow cover 122.

Records on 17 October 1984 by type
Record type	Records
Highest daily maximum	149
Lowest daily maximum	362
Highest daily minimum	158
Lowest daily minimum	162
Heaviest daily rainfall	451
Heaviest daily snowfall	147
Deepest snow cover	122

Records on 17 October 1984 by timescale: all-time 1, monthly 90, daily 1,460.

How Much Records Were Beaten By

1,283 broken records

Margins by which the 1,283 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

17 October 1984

Top 20 records on 17 October 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 1984	Coalville, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	89 years	75 of 100 (Major)
17 October 1984	Santa Cruz, US	daily rain	76.2 mm (3.0 in)	49.5 mm (1.9 in)	70 years	70 of 100 (Major)
17 October 1984	Snake Creek Powerhouse, US	monthly snow depth	27.9 cm (11.0 in)	12.7 cm (5.0 in)	70 years	70 of 100 (Major)
17 October 1984	Clover Valley, US	monthly snowfall	27.9 cm (11.0 in)	15.7 cm (6.2 in)	63 years	68 of 100 (Major)
17 October 1984	Manti, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	84 years	68 of 100 (Major)
17 October 1984	Beaver, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	76 years	61 of 100 (Major)
17 October 1984	Sibley, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	89 years	60 of 100 (Major)
17 October 1984	Loa, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	89 years	60 of 100 (Major)
17 October 1984	Bailey, US	daily snow depth	35.6 cm (14.0 in)	35.6 cm (14.0 in)	44 years	57 of 100 (Notable)
17 October 1984	Koosharem, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	90 years	56 of 100 (Notable)
17 October 1984	Minersville, US	monthly snowfall	14.0 cm (5.5 in)	8.9 cm (3.5 in)	71 years	56 of 100 (Notable)
17 October 1984	Tacoma, US	monthly snowfall	35.6 cm (14.0 in)	15.3 cm (6.0 in)	24 years	54 of 100 (Notable)
17 October 1984	Beowawe, US	monthly snowfall	12.7 cm (5.0 in)	5.1 cm (2.0 in)	86 years	54 of 100 (Notable)
17 October 1984	Chama, US	daily snowfall	27.9 cm (11.0 in)	24.1 cm (9.5 in)	19 years	54 of 100 (Notable)
17 October 1984	Guffey 10 SE, US	daily snow depth	30.5 cm (12.0 in)	30.5 cm (12.0 in)	34 years	53 of 100 (Notable)
17 October 1984	Swan Lake, US	daily rain	80.0 mm (3.1 in)	60.4 mm (2.4 in)	17 years	53 of 100 (Notable)
17 October 1984	Litang, CN	daily rain	29.2 mm (1.1 in)	18.6 mm (0.7 in)	28 years	51 of 100 (Notable)
17 October 1984	Susanville 2SW, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	90 years	51 of 100 (Notable)
17 October 1984	Simmesport, US	daily rain	91.4 mm (3.6 in)	51.3 mm (2.0 in)	56 years	51 of 100 (Notable)
17 October 1984	Payson, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	78 years	51 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 1984

Records set or tied on this calendar date in each year from 1793 to 1984. 1984 had 1,551 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 1984-10-17: 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 50	1,143
50 to 100	89
100 to 150	28
150 to 200	12
200 to 250	6
250 to 300	3
300 to 350	1
350 to 400	1