Weather Records on 17 September 1984

1,006 weather records were set or tied worldwide on 17 September 1984. Highest significance: Minsk, BY.

Key Facts for 17 September 1984

On 17 September 1984, 1,006 weather records were set or tied at long-record stations worldwide.
222 were record highs and 451 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 7 monthly and 997 daily.
Minsk set a daily record precipitation of 30.1 mm (1.2 in) on 17 September 1984.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 419 records.

Record Map

1,006 stations

1,006 station records on 17 September 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Minsk	Belarus	Record daily precipitation	30.1 mm (1.2 in)	64 of 100 (Major)
Bouake	Cote D'Ivoire	Record daily precipitation	97.0 mm (3.8 in)	51 of 100 (Notable)
Naalehu 14	United States	Record low minimum temperature	13.3 C (55.9 F)	50 of 100 (Notable)
Trout Lake	United States	Record daily precipitation	33.0 mm (1.3 in)	49 of 100 (Notable)
Edenhope (Post Office)	Australia	Record daily precipitation	36.5 mm (1.4 in)	48 of 100 (Notable)
Harlingen	United States	Record daily precipitation	79.0 mm (3.1 in)	48 of 100 (Notable)
Glenorchy	Australia	Record daily precipitation	26.8 mm (1.1 in)	47 of 100 (Notable)
Kellevie	Australia	Record daily precipitation	38.0 mm (1.5 in)	47 of 100 (Notable)
Santa Barbara	United States	Record high minimum temperature	21.1 C (70.0 F)	45 of 100 (Notable)
Bovenlandsplaats	South Africa	Record daily precipitation	70.0 mm (2.8 in)	44 of 100 (Notable)
Beregovo	Ukraine	Record daily precipitation	38.5 mm (1.5 in)	44 of 100 (Notable)
Wytheville	United States	Record low minimum temperature	-1.1 C (30.0 F)	44 of 100 (Notable)
Raymondville	United States	Record daily precipitation	78.5 mm (3.1 in)	43 of 100 (Notable)
Dungowan Station	Australia	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Grassdale	Australia	Record daily precipitation	27.6 mm (1.1 in)	42 of 100 (Notable)
Wirrabara	Australia	Record daily precipitation	28.6 mm (1.1 in)	41 of 100 (Notable)
Vevay	United States	Record low minimum temperature	4.4 C (39.9 F)	41 of 100 (Notable)
Rennick	Australia	Record daily precipitation	27.0 mm (1.1 in)	39 of 100 (Notable)
Misantla	Mexico	Record daily precipitation	146.3 mm (5.8 in)	39 of 100 (Notable)
Angola	United States	Record low maximum temperature	11.7 C (53.1 F)	37 of 100 (Notable)
Warranooke (Glenorchy)	Australia	Record daily precipitation	26.0 mm (1.0 in)	36 of 100 (Notable)
Southport 5 N	United States	Record low maximum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Cracow Store	Australia	Record daily precipitation	29.6 mm (1.2 in)	35 of 100 (Notable)
Juliana	South Africa	Record daily precipitation	28.0 mm (1.1 in)	35 of 100 (Notable)
Morganton	United States	Record low minimum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Brownsville	United States	Record daily precipitation	94.5 mm (3.7 in)	35 of 100 (Notable)
Clear Lake	Australia	Record daily precipitation	25.8 mm (1.0 in)	34 of 100 (Routine)
Jefferson 2 E	United States	Record low minimum temperature	-0.6 C (30.9 F)	34 of 100 (Routine)
Tullahoma	United States	Record low minimum temperature	6.7 C (44.1 F)	34 of 100 (Routine)
Franklin 2 NE	United States	Record low minimum temperature	-1.1 C (30.0 F)	34 of 100 (Routine)
Benalla (Shadforth Street)	Australia	Record daily precipitation	27.6 mm (1.1 in)	33 of 100 (Routine)
Juchitan de Zaragoza	Mexico	Record low minimum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Mecca Fire STN	United States	Record high maximum temperature	45.0 C (113.0 F)	33 of 100 (Routine)
San Jose	United States	Record high minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Statesville 2 NNE	United States	Record low minimum temperature	4.4 C (39.9 F)	33 of 100 (Routine)
Burkes Garden	United States	Record low minimum temperature	-2.2 C (28.0 F)	33 of 100 (Routine)
Woodstock 2 NE	United States	Record low minimum temperature	2.2 C (36.0 F)	33 of 100 (Routine)
Sacramento 5 ESE	United States	Record high maximum temperature	41.1 C (106.0 F)	33 of 100 (Routine)
Santiago Choapan	Mexico	Record daily precipitation	90.2 mm (3.6 in)	32 of 100 (Routine)
Berkeley	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Oberlin	United States	Record low minimum temperature	-1.1 C (30.0 F)	32 of 100 (Routine)
Ft Meade	United States	Record high maximum temperature	32.2 C (90.0 F)	32 of 100 (Routine)
Leola	United States	Record high maximum temperature	32.2 C (90.0 F)	32 of 100 (Routine)
Port Isabel	United States	Record daily precipitation	59.4 mm (2.3 in)	32 of 100 (Routine)
Bundaberg Post Office	Australia	Record high minimum temperature	19.5 C (67.1 F)	31 of 100 (Routine)
Harrow (Pine Hills)	Australia	Record daily precipitation	26.5 mm (1.0 in)	31 of 100 (Routine)
Marble Hill	United States	Record low minimum temperature	3.3 C (37.9 F)	31 of 100 (Routine)
Belhaven 1 SE	United States	Record low maximum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Lexington	United States	Record low minimum temperature	5.0 C (41.0 F)	31 of 100 (Routine)
Knoxville AP	United States	Record low minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Creswick	Australia	Record daily precipitation	29.0 mm (1.1 in)	30 of 100 (Routine)
Misantla	Mexico	Record low maximum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Auberry 2 NW	United States	Record high minimum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Ojai	United States	Record high minimum temperature	21.1 C (70.0 F)	30 of 100 (Routine)
Oxnard	United States	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
San Luis Obispo Poly	United States	Record high minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Leitchfield 2 N	United States	Record low minimum temperature	3.9 C (39.0 F)	30 of 100 (Routine)
Mc Minnville	United States	Record low minimum temperature	6.7 C (44.1 F)	30 of 100 (Routine)
Georgetown Post Office	Australia	Record high minimum temperature	23.5 C (74.3 F)	29 of 100 (Routine)
Arcturus Downs	Australia	Record daily precipitation	40.0 mm (1.6 in)	29 of 100 (Routine)

Counts by Type and Timescale

1,006 records

Records set or tied on 17 September 1984 by type: Highest daily maximum 90, Lowest daily maximum 162, Highest daily minimum 132, Lowest daily minimum 289, Heaviest daily rainfall 332, Deepest snow cover 1.

Records on 17 September 1984 by type
Record type	Records
Highest daily maximum	90
Lowest daily maximum	162
Highest daily minimum	132
Lowest daily minimum	289
Heaviest daily rainfall	332
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 17 September 1984 by timescale: all-time 2, monthly 7, daily 997.

How Much Records Were Beaten By

777 broken records

Margins by which the 777 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 65.5. Ties are not counted.

Top 20 by Significance

17 September 1984

Top 20 records on 17 September 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1984	Minsk, BY	daily rain	30.1 mm (1.2 in)	14.5 mm (0.6 in)	92 years	64 of 100 (Major)
17 September 1984	Bouake, CI	daily rain	97.0 mm (3.8 in)	60.4 mm (2.4 in)	25 years	51 of 100 (Notable)
17 September 1984	Naalehu 14, US	monthly low min	13.3 C (55.9 F)	2.3 C (4.1 F)	62 years	50 of 100 (Notable)
17 September 1984	Trout Lake, US	daily rain	33.0 mm (1.3 in)	22.3 mm (0.9 in)	44 years	49 of 100 (Notable)
17 September 1984	Edenhope (Post Office), AU	daily rain	36.5 mm (1.4 in)	17.4 mm (0.7 in)	32 years	48 of 100 (Notable)
17 September 1984	Harlingen, US	daily rain	79.0 mm (3.1 in)	43.4 mm (1.7 in)	65 years	48 of 100 (Notable)
17 September 1984	Glenorchy, AU	daily rain	26.8 mm (1.1 in)	11.6 mm (0.5 in)	67 years	47 of 100 (Notable)
17 September 1984	Kellevie, AU	daily rain	38.0 mm (1.5 in)	25.3 mm (1.0 in)	24 years	47 of 100 (Notable)
17 September 1984	Santa Barbara, US	daily high min	21.1 C (70.0 F)	3.3 C (5.9 F)	78 years	45 of 100 (Notable)
17 September 1984	Bovenlandsplaats, ZA	monthly rain	70.0 mm (2.8 in)	19.2 mm (0.8 in)	39 years	44 of 100 (Notable)
17 September 1984	Beregovo, UA	daily rain	38.5 mm (1.5 in)	24.1 mm (0.9 in)	12 years	44 of 100 (Notable)
17 September 1984	Wytheville, US	daily low min	-1.1 C (30.0 F)	5.5 C (9.9 F)	82 years	44 of 100 (Notable)
17 September 1984	Raymondville, US	daily rain	78.5 mm (3.1 in)	60.7 mm (2.4 in)	34 years	43 of 100 (Notable)
17 September 1984	Dungowan Station, AU	daily rain	30.0 mm (1.2 in)	12.0 mm (0.5 in)	67 years	42 of 100 (Notable)
17 September 1984	Grassdale, AU	daily rain	27.6 mm (1.1 in)	19.5 mm (0.8 in)	18 years	42 of 100 (Notable)
17 September 1984	Wirrabara, AU	daily rain	28.6 mm (1.1 in)	5.2 mm (0.20 in)	81 years	41 of 100 (Notable)
17 September 1984	Vevay, US	daily low min	4.4 C (39.9 F)	2.8 C (5.0 F)	90 years	41 of 100 (Notable)
17 September 1984	Rennick, AU	daily rain	27.0 mm (1.1 in)	17.3 mm (0.7 in)	19 years	39 of 100 (Notable)
17 September 1984	Misantla, MX	daily rain	146.3 mm (5.8 in)	65.5 mm (2.6 in)	36 years	39 of 100 (Notable)
17 September 1984	Angola, US	daily low max	11.7 C (53.1 F)	2.2 C (4.0 F)	84 years	37 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

1796 to 1984

Records set or tied on this calendar date in each year from 1796 to 1984. 1984 had 1,006 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 1984-09-17: 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	712
10 to 20	49
20 to 30	8
30 to 40	2
40 to 50	1
50 to 60	2
60 to 70	3