Weather Records on 17 October 1980

1,366 weather records were set or tied worldwide on 17 October 1980. Highest significance: Mombaca, BR.

Key Facts for 17 October 1980

On 17 October 1980, 1,366 weather records were set or tied at long-record stations worldwide.
319 were record highs and 298 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 54 monthly and 1,307 daily.
Mombaca set a daily record precipitation of 29.2 mm (1.1 in) on 17 October 1980.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 434 records.

Record Map

1,366 stations

1,366 station records on 17 October 1980 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 1980: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mombaca	Brazil	Record daily precipitation	29.2 mm (1.1 in)	68 of 100 (Major)
Killdeer 8 NW	United States	Record daily snowfall	10.2 cm (4.0 in)	67 of 100 (Major)
Lovnas	Sweden	Record daily precipitation	43.9 mm (1.7 in)	62 of 100 (Major)
Biri	Norway	Record daily precipitation	47.5 mm (1.9 in)	60 of 100 (Major)
Holjes	Sweden	Record daily precipitation	52.2 mm (2.1 in)	60 of 100 (Major)
Sveg	Sweden	Record daily precipitation	43.4 mm (1.7 in)	60 of 100 (Major)
Malung	Sweden	Record daily precipitation	36.6 mm (1.4 in)	59 of 100 (Notable)
Fagelsjo_D	Sweden	Record daily precipitation	40.5 mm (1.6 in)	59 of 100 (Notable)
Mqanduli (Tnk)	South Africa	Record daily precipitation	60.0 mm (2.4 in)	58 of 100 (Notable)
Willow City	United States	Record daily precipitation	31.8 mm (1.3 in)	58 of 100 (Notable)
Oje_D	Sweden	Record daily precipitation	49.3 mm (1.9 in)	57 of 100 (Notable)
Medicine Bow	United States	Record daily snowfall	21.6 cm (8.5 in)	57 of 100 (Notable)
Myrtle Bank (Lanoma)	Australia	Record daily precipitation	69.8 mm (2.7 in)	56 of 100 (Notable)
Milan	Italy	Record daily precipitation	76.8 mm (3.0 in)	56 of 100 (Notable)
Flotningen	Sweden	Record daily precipitation	44.0 mm (1.7 in)	56 of 100 (Notable)
Steele 4N	United States	Record daily precipitation	41.1 mm (1.6 in)	56 of 100 (Notable)
Hettinger	United States	Record daily precipitation	30.5 mm (1.2 in)	55 of 100 (Notable)
Selby	United States	Record daily precipitation	38.9 mm (1.5 in)	55 of 100 (Notable)
Pembina	United States	Record daily precipitation	39.9 mm (1.6 in)	55 of 100 (Notable)
Idre_D	Sweden	Record daily precipitation	47.5 mm (1.9 in)	54 of 100 (Notable)
Mandan Exp STN	United States	Record daily precipitation	30.2 mm (1.2 in)	54 of 100 (Notable)
Ludlow 3 SSE	United States	Record snow depth	20.3 cm (8.0 in)	54 of 100 (Notable)
Lunner	Norway	Record daily precipitation	78.1 mm (3.1 in)	53 of 100 (Notable)
Hiasen I Sigdal	Norway	Record daily precipitation	49.9 mm (2.0 in)	53 of 100 (Notable)
Bogoroditskoye-Fenino	Russia	Record daily precipitation	29.1 mm (1.1 in)	53 of 100 (Notable)
Augathella Post Office	Australia	Record daily precipitation	51.8 mm (2.0 in)	52 of 100 (Notable)
Morven Post Office	Australia	Record daily precipitation	77.6 mm (3.1 in)	52 of 100 (Notable)
Abjorsbraten	Norway	Record daily precipitation	35.2 mm (1.4 in)	52 of 100 (Notable)
Lisskogsasen	Sweden	Record daily precipitation	47.2 mm (1.9 in)	52 of 100 (Notable)
Snoaby	Sweden	Record daily precipitation	41.1 mm (1.6 in)	52 of 100 (Notable)
Grycksbo_D	Sweden	Record daily precipitation	30.0 mm (1.2 in)	52 of 100 (Notable)
Tanger	Sweden	Record daily precipitation	28.0 mm (1.1 in)	52 of 100 (Notable)
Spicer	United States	Record daily snowfall	12.7 cm (5.0 in)	52 of 100 (Notable)
Vandalia	United States	Record daily precipitation	47.8 mm (1.9 in)	52 of 100 (Notable)
NAS	Sweden	Record daily precipitation	36.0 mm (1.4 in)	51 of 100 (Notable)
Odell 2 N	United States	Record daily precipitation	95.0 mm (3.7 in)	51 of 100 (Notable)
Medicine Bow	United States	Record daily precipitation	31.8 mm (1.3 in)	51 of 100 (Notable)
Geilo	Norway	Record daily precipitation	26.3 mm (1.0 in)	50 of 100 (Notable)
Sarna	Sweden	Record daily precipitation	39.7 mm (1.6 in)	50 of 100 (Notable)
Channahon Dresden Isl Dam	United States	Record daily precipitation	50.0 mm (2.0 in)	50 of 100 (Notable)
Joliet Brandon Road Lock/Dam	United States	Record daily precipitation	50.5 mm (2.0 in)	50 of 100 (Notable)
Foxholm 7 N	United States	Record daily snowfall	7.6 cm (3.0 in)	50 of 100 (Notable)
Upham 3 N	United States	Record daily snowfall	17.8 cm (7.0 in)	50 of 100 (Notable)
Velva	United States	Record daily precipitation	25.9 mm (1.0 in)	50 of 100 (Notable)
Solleron	Sweden	Record daily precipitation	43.8 mm (1.7 in)	49 of 100 (Notable)
Ytterberg_D	Sweden	Record daily precipitation	37.9 mm (1.5 in)	49 of 100 (Notable)
Walhalla 1 SW	United States	Record daily precipitation	38.9 mm (1.5 in)	49 of 100 (Notable)
Barra Do Gil (I.de Itaparica)	Brazil	Record daily precipitation	97.5 mm (3.8 in)	48 of 100 (Notable)
Eidsvoll Verk	Norway	Record daily precipitation	44.1 mm (1.7 in)	48 of 100 (Notable)
Dadran	Sweden	Record daily precipitation	46.5 mm (1.8 in)	48 of 100 (Notable)
Beardstown	United States	Record daily precipitation	55.9 mm (2.2 in)	48 of 100 (Notable)
Cambridge Galt Moe	Canada	Record daily precipitation	29.4 mm (1.2 in)	47 of 100 (Notable)
Nes Pa Hedmark	Norway	Record daily precipitation	29.5 mm (1.2 in)	47 of 100 (Notable)
Grundforsen	Sweden	Record daily precipitation	41.6 mm (1.6 in)	47 of 100 (Notable)
Ljungdalen	Sweden	Record daily precipitation	25.4 mm (1.0 in)	47 of 100 (Notable)
Dillon 1 E	United States	Record snow depth	20.3 cm (8.0 in)	47 of 100 (Notable)
Munich 1 SSW	United States	Record daily precipitation	27.9 mm (1.1 in)	47 of 100 (Notable)
Rolla 1NE	United States	Record daily snowfall	9.1 cm (3.6 in)	47 of 100 (Notable)
Tuttle	United States	Record daily precipitation	39.4 mm (1.6 in)	47 of 100 (Notable)
Wilton	United States	Record daily precipitation	35.8 mm (1.4 in)	47 of 100 (Notable)

Counts by Type and Timescale

1,366 records

Records set or tied on 17 October 1980 by type: Highest daily maximum 95, Lowest daily maximum 178, Highest daily minimum 224, Lowest daily minimum 120, Heaviest daily rainfall 611, Heaviest daily snowfall 65, Deepest snow cover 73.

Records on 17 October 1980 by type
Record type	Records
Highest daily maximum	95
Lowest daily maximum	178
Highest daily minimum	224
Lowest daily minimum	120
Heaviest daily rainfall	611
Heaviest daily snowfall	65
Deepest snow cover	73

Records on 17 October 1980 by timescale: all-time 5, monthly 54, daily 1,307.

How Much Records Were Beaten By

1,155 broken records

Margins by which the 1,155 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

17 October 1980

Top 20 records on 17 October 1980 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 1980	Mombaca, BR	daily rain	29.2 mm (1.1 in)	29.2 mm (1.1 in)	70 years	68 of 100 (Major)
17 October 1980	Killdeer 8 NW, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	83 years	67 of 100 (Major)
17 October 1980	Lovnas, SE	monthly rain	43.9 mm (1.7 in)	22.9 mm (0.9 in)	30 years	62 of 100 (Major)
17 October 1980	Biri, NO	daily rain	47.5 mm (1.9 in)	20.7 mm (0.8 in)	83 years	60 of 100 (Major)
17 October 1980	Holjes, SE	monthly rain	52.2 mm (2.1 in)	26.8 mm (1.1 in)	25 years	60 of 100 (Major)
17 October 1980	Sveg, SE	monthly rain	43.4 mm (1.7 in)	11.4 mm (0.4 in)	47 years	60 of 100 (Major)
17 October 1980	Malung, SE	daily rain	36.6 mm (1.4 in)	21.1 mm (0.8 in)	36 years	59 of 100 (Notable)
17 October 1980	Fagelsjo_D, SE	monthly rain	40.5 mm (1.6 in)	18.9 mm (0.7 in)	20 years	59 of 100 (Notable)
17 October 1980	Mqanduli (Tnk), ZA	daily rain	60.0 mm (2.4 in)	39.7 mm (1.6 in)	32 years	58 of 100 (Notable)
17 October 1980	Willow City, US	daily rain	31.8 mm (1.3 in)	17.8 mm (0.7 in)	74 years	58 of 100 (Notable)
17 October 1980	Oje_D, SE	monthly rain	49.3 mm (1.9 in)	16.5 mm (0.6 in)	30 years	57 of 100 (Notable)
17 October 1980	Medicine Bow, US	daily snowfall	21.6 cm (8.5 in)	21.6 cm (8.5 in)	32 years	57 of 100 (Notable)
17 October 1980	Myrtle Bank (Lanoma), AU	daily rain	69.8 mm (2.7 in)	49.0 mm (1.9 in)	43 years	56 of 100 (Notable)
17 October 1980	Milan, IT	daily rain	76.8 mm (3.0 in)	22.6 mm (0.9 in)	116 years	56 of 100 (Notable)
17 October 1980	Flotningen, SE	monthly rain	44.0 mm (1.7 in)	22.4 mm (0.9 in)	13 years	56 of 100 (Notable)
17 October 1980	Steele 4N, US	daily rain	41.1 mm (1.6 in)	32.2 mm (1.3 in)	27 years	56 of 100 (Notable)
17 October 1980	Hettinger, US	daily rain	30.5 mm (1.2 in)	20.3 mm (0.8 in)	70 years	55 of 100 (Notable)
17 October 1980	Selby, US	daily rain	38.9 mm (1.5 in)	32.8 mm (1.3 in)	27 years	55 of 100 (Notable)
17 October 1980	Pembina, US	daily rain	39.9 mm (1.6 in)	29.2 mm (1.1 in)	27 years	55 of 100 (Notable)
17 October 1980	Idre_D, SE	monthly rain	47.5 mm (1.9 in)	23.2 mm (0.9 in)	4 years	54 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 1980

Records set or tied on this calendar date in each year from 1793 to 1980. 1980 had 1,366 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 1980-10-17: 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	1,084
50 to 100	49
100 to 150	14
150 to 200	5
200 to 250	2
250 to 300	1