Weather Records on 17 September 1985

448 weather records were set or tied worldwide on 17 September 1985. Highest significance: Saint Paul Is AP, US.

Key Facts for 17 September 1985

On 17 September 1985, 448 weather records were set or tied at long-record stations worldwide.
110 were record highs and 186 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 439 daily.
Saint Paul Is AP set a daily record precipitation of 36.1 mm (1.4 in) on 17 September 1985.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 423 records.

Record Map

448 stations

448 station records on 17 September 1985 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1985: highest significance records shown on the map
Station	Country	Type	Value	Significance
Saint Paul Is AP	United States	Record daily precipitation	36.1 mm (1.4 in)	58 of 100 (Notable)
Sandpoint Exp STN	United States	Record daily precipitation	33.8 mm (1.3 in)	57 of 100 (Notable)
Everglades	United States	Record low minimum temperature	17.2 C (63.0 F)	52 of 100 (Notable)
Nanping	China	Record daily precipitation	82.7 mm (3.3 in)	51 of 100 (Notable)
Cape Naturaliste	Australia	Record daily precipitation	31.6 mm (1.2 in)	49 of 100 (Notable)
Huajintlan	Mexico	Record low maximum temperature	20.6 C (69.1 F)	49 of 100 (Notable)
Cold Bay AP	United States	Record daily precipitation	53.6 mm (2.1 in)	49 of 100 (Notable)
Presa Pucuato	Mexico	Record daily precipitation	65.5 mm (2.6 in)	45 of 100 (Notable)
Key W Intl AP	United States	Record daily precipitation	87.9 mm (3.5 in)	44 of 100 (Notable)
Barkam	China	Record daily precipitation	42.3 mm (1.7 in)	42 of 100 (Notable)
Klaipeda	Lithuania	Record daily precipitation	25.6 mm (1.0 in)	41 of 100 (Notable)
Hialeah	United States	Record low minimum temperature	14.4 C (57.9 F)	40 of 100 (Notable)
Brookhaven City	United States	Record low minimum temperature	6.7 C (44.1 F)	38 of 100 (Notable)
Dinghai	China	Record daily precipitation	95.3 mm (3.8 in)	37 of 100 (Notable)
Greenwood	United States	Record low minimum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Campbell Island AWS	New Zealand	Record high maximum temperature	14.7 C (58.5 F)	35 of 100 (Notable)
Santa Rita Exp Range	United States	Record daily precipitation	32.8 mm (1.3 in)	35 of 100 (Notable)
Milledgeville	United States	Record low minimum temperature	8.3 C (46.9 F)	35 of 100 (Notable)
Walhalla	United States	Record low minimum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Stewart Mtn Dam	United States	Record daily precipitation	36.1 mm (1.4 in)	34 of 100 (Routine)
Garfield	United States	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Northport	United States	Record low maximum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Diredawa	Ethiopia	Record daily precipitation	34.5 mm (1.4 in)	33 of 100 (Routine)
Brevard	United States	Record low minimum temperature	3.9 C (39.0 F)	33 of 100 (Routine)
San Diego de Alejandria	Mexico	Record daily precipitation	62.5 mm (2.5 in)	31 of 100 (Routine)
Federal Pt	United States	Record low maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Blackleaf	United States	Record high minimum temperature	10.0 C (50.0 F)	30 of 100 (Routine)
Attu	United States	Record low minimum temperature	0.6 C (33.1 F)	30 of 100 (Routine)
Patna	India	Record daily precipitation	78.0 mm (3.1 in)	29 of 100 (Routine)
Wray	United States	Record high maximum temperature	36.1 C (97.0 F)	29 of 100 (Routine)
Mt Locke	United States	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Northcliffe	Australia	Record daily precipitation	29.4 mm (1.2 in)	28 of 100 (Routine)
El Carrizal	Mexico	Record daily precipitation	39.9 mm (1.6 in)	28 of 100 (Routine)
Mt Ayr	United States	Record high minimum temperature	21.7 C (71.1 F)	28 of 100 (Routine)
Iliamna AP	United States	Record low maximum temperature	7.2 C (45.0 F)	28 of 100 (Routine)
Cabo San Lucas	Mexico	Record high maximum temperature	40.6 C (105.1 F)	27 of 100 (Routine)
San Andres Lagunas	Mexico	Record daily precipitation	34.8 mm (1.4 in)	27 of 100 (Routine)
Winton Pwr Plt	United States	Record daily precipitation	37.3 mm (1.5 in)	27 of 100 (Routine)
Xochiapa	Mexico	Record low minimum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Saint Maries	United States	Record daily precipitation	35.8 mm (1.4 in)	26 of 100 (Routine)
Key W Intl AP	United States	Record low minimum temperature	20.6 C (69.1 F)	26 of 100 (Routine)
Motozintla (Smn)	Mexico	Record high maximum temperature	31.1 C (88.0 F)	25 of 100 (Routine)
Antonio Escobedo (Smn)	Mexico	Record low maximum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Longview	United States	Record low maximum temperature	13.9 C (57.0 F)	25 of 100 (Routine)
Newport	United States	Record low maximum temperature	8.9 C (48.0 F)	25 of 100 (Routine)
Key West NAS	United States	Record daily precipitation	138.9 mm (5.5 in)	25 of 100 (Routine)
Guadalajara (Dge)	Mexico	Record high minimum temperature	17.2 C (63.0 F)	24 of 100 (Routine)
Tototlan	Mexico	Record low minimum temperature	2.8 C (37.0 F)	24 of 100 (Routine)
Santa Ana (Dge)	Mexico	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Elberton 2 N	United States	Record low minimum temperature	4.4 C (39.9 F)	24 of 100 (Routine)
McKinley Park	United States	Record low maximum temperature	0.6 C (33.1 F)	24 of 100 (Routine)
Jinan	China	Record low maximum temperature	17.0 C (62.6 F)	23 of 100 (Routine)
Vitim	Russia	Record low maximum temperature	1.1 C (34.0 F)	23 of 100 (Routine)
Laguna Beach	United States	Record low minimum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
Valley Falls	United States	Record low maximum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Battle Ground	United States	Record low maximum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Wilbur	United States	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Dardanup East	Australia	Record daily precipitation	27.6 mm (1.1 in)	22 of 100 (Routine)
Walpole North Old	Australia	Record daily precipitation	34.8 mm (1.4 in)	22 of 100 (Routine)
Chengshantou	China	Record low minimum temperature	14.7 C (58.5 F)	22 of 100 (Routine)

Counts by Type and Timescale

448 records

Records set or tied on 17 September 1985 by type: Highest daily maximum 52, Lowest daily maximum 75, Highest daily minimum 58, Lowest daily minimum 111, Heaviest daily rainfall 147, Heaviest daily snowfall 4, Deepest snow cover 1.

Records on 17 September 1985 by type
Record type	Records
Highest daily maximum	52
Lowest daily maximum	75
Highest daily minimum	58
Lowest daily minimum	111
Heaviest daily rainfall	147
Heaviest daily snowfall	4
Deepest snow cover	1

Records on 17 September 1985 by timescale: all-time 0, monthly 9, daily 439.

How Much Records Were Beaten By

337 broken records

Margins by which the 337 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 70.6. Ties are not counted.

Top 20 by Significance

17 September 1985

Top 20 records on 17 September 1985 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1985	Saint Paul Is AP, US	daily rain	36.1 mm (1.4 in)	16.8 mm (0.7 in)	60 years	58 of 100 (Notable)
17 September 1985	Sandpoint Exp STN, US	daily rain	33.8 mm (1.3 in)	20.6 mm (0.8 in)	71 years	57 of 100 (Notable)
17 September 1985	Everglades, US	daily low min	17.2 C (63.0 F)	3.9 C (7.0 F)	46 years	52 of 100 (Notable)
17 September 1985	Nanping, CN	daily rain	82.7 mm (3.3 in)	70.6 mm (2.8 in)	27 years	51 of 100 (Notable)
17 September 1985	Cape Naturaliste, AU	daily rain	31.6 mm (1.2 in)	18.1 mm (0.7 in)	28 years	49 of 100 (Notable)
17 September 1985	Huajintlan, MX	daily low max	20.6 C (69.1 F)	7.2 C (13.0 F)	59 years	49 of 100 (Notable)
17 September 1985	Cold Bay AP, US	daily rain	53.6 mm (2.1 in)	32.8 mm (1.3 in)	23 years	49 of 100 (Notable)
17 September 1985	Presa Pucuato, MX	daily rain	65.5 mm (2.6 in)	39.3 mm (1.5 in)	12 years	45 of 100 (Notable)
17 September 1985	Key W Intl AP, US	daily rain	87.9 mm (3.5 in)	67.1 mm (2.6 in)	8 years	44 of 100 (Notable)
17 September 1985	Barkam, CN	daily rain	42.3 mm (1.7 in)	22.4 mm (0.9 in)	30 years	42 of 100 (Notable)
17 September 1985	Klaipeda, LT	daily rain	25.6 mm (1.0 in)	11.5 mm (0.5 in)	58 years	41 of 100 (Notable)
17 September 1985	Hialeah, US	monthly low min	14.4 C (57.9 F)	2.3 C (4.1 F)	36 years	40 of 100 (Notable)
17 September 1985	Brookhaven City, US	daily low min	6.7 C (44.1 F)	3.3 C (5.9 F)	68 years	38 of 100 (Notable)
17 September 1985	Dinghai, CN	daily rain	95.3 mm (3.8 in)	61.5 mm (2.4 in)	28 years	37 of 100 (Notable)
17 September 1985	Greenwood, US	daily low min	7.8 C (46.0 F)	1.6 C (2.9 F)	83 years	37 of 100 (Notable)
17 September 1985	Campbell Island AWS, NZ	monthly high max	14.7 C (58.5 F)	2.0 C (3.6 F)	24 years	35 of 100 (Notable)
17 September 1985	Santa Rita Exp Range, US	daily rain	32.8 mm (1.3 in)	27.7 mm (1.1 in)	30 years	35 of 100 (Notable)
17 September 1985	Milledgeville, US	daily low min	8.3 C (46.9 F)	1.1 C (2.0 F)	76 years	35 of 100 (Notable)
17 September 1985	Walhalla, US	daily low min	6.7 C (44.1 F)	0.5 C (0.9 F)	84 years	35 of 100 (Notable)
17 September 1985	Stewart Mtn Dam, US	daily rain	36.1 mm (1.4 in)	21.9 mm (0.9 in)	44 years	34 of 100 (Routine)

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

1796 to 1985

Records set or tied on this calendar date in each year from 1796 to 1985. 1985 had 448 records.

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

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 1985-09-17: 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 10	304
10 to 20	15
20 to 30	10
30 to 40	4
40 to 50	1
50 to 60	0
60 to 70	2
70 to 80	1