Weather Records on 15 September 1984

766 weather records were set or tied worldwide on 15 September 1984. Highest significance: Tabou, CI.

Key Facts for 15 September 1984

On 15 September 1984, 766 weather records were set or tied at long-record stations worldwide.
164 were record highs and 368 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 760 daily.
Tabou set a monthly record daily precipitation of 218.9 mm (8.6 in) on 15 September 1984.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 411 records.

Record Map

766 stations

766 station records on 15 September 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tabou	Cote D'Ivoire	Record daily precipitation	218.9 mm (8.6 in)	63 of 100 (Major)
Juchitan de Zaragoza	Mexico	Record daily precipitation	160.3 mm (6.3 in)	50 of 100 (Notable)
Misantla	Mexico	Record daily precipitation	132.8 mm (5.2 in)	45 of 100 (Notable)
Vestmannaeyjar	Iceland	Record daily precipitation	66.7 mm (2.6 in)	44 of 100 (Notable)
Wharton	United States	Record daily precipitation	49.8 mm (2.0 in)	44 of 100 (Notable)
Tlatlauquitepec (Cfe)	Mexico	Record daily precipitation	119.9 mm (4.7 in)	40 of 100 (Notable)
Mora	United States	Record low minimum temperature	-6.1 C (21.0 F)	40 of 100 (Notable)
Cape Moreton Lighthouse	Australia	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Pierce 1 E	United States	Record daily precipitation	76.2 mm (3.0 in)	39 of 100 (Notable)
Welverdiend (Pol)	South Africa	Record daily precipitation	34.2 mm (1.3 in)	38 of 100 (Notable)
Utuado	Puerto Rico [United States]	Record low maximum temperature	27.8 C (82.0 F)	37 of 100 (Notable)
Primghar	United States	Record low minimum temperature	-0.6 C (30.9 F)	37 of 100 (Notable)
Miltonvale	United States	Record daily precipitation	65.8 mm (2.6 in)	37 of 100 (Notable)
Brodhead Wwtp	United States	Record low minimum temperature	-1.7 C (28.9 F)	36 of 100 (Notable)
Santa Barbara	United States	Record high minimum temperature	17.8 C (64.0 F)	35 of 100 (Notable)
Olney 2S	United States	Record low maximum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
Yealering	Australia	Record daily precipitation	31.6 mm (1.2 in)	34 of 100 (Routine)
Akron 4 E	United States	Record low maximum temperature	10.6 C (51.1 F)	34 of 100 (Routine)
Elkader 6 SSW	United States	Record low minimum temperature	-1.1 C (30.0 F)	34 of 100 (Routine)
Woomera (Mahanewo)	Australia	Record daily precipitation	25.2 mm (1.0 in)	33 of 100 (Routine)
Huichapan	Mexico	Record low maximum temperature	12.8 C (55.0 F)	33 of 100 (Routine)
Urepetiro	Mexico	Record low maximum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Misantla	Mexico	Record low maximum temperature	21.7 C (71.1 F)	33 of 100 (Routine)
Duchesne	United States	Record high minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Moroleon	Mexico	Record low maximum temperature	20.6 C (69.1 F)	32 of 100 (Routine)
Juchitan de Zaragoza	Mexico	Record low minimum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Santiago Chivela	Mexico	Record daily precipitation	115.8 mm (4.6 in)	32 of 100 (Routine)
Zacapoaxtla (Smn)	Mexico	Record daily precipitation	205.0 mm (8.1 in)	31 of 100 (Routine)
Azueta	Mexico	Record daily precipitation	100.3 mm (3.9 in)	31 of 100 (Routine)
Richfield	United States	Record high minimum temperature	12.2 C (54.0 F)	31 of 100 (Routine)
Danville	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
La Harpe	United States	Record low maximum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Caledonia	United States	Record low maximum temperature	12.2 C (54.0 F)	31 of 100 (Routine)
Park Rapids Muni AP	United States	Record low minimum temperature	-3.3 C (26.1 F)	31 of 100 (Routine)
Old Baratta Homestead	Australia	Record daily precipitation	29.0 mm (1.1 in)	30 of 100 (Routine)
Camden (Brownlow Hill)	Australia	Record daily precipitation	38.5 mm (1.5 in)	30 of 100 (Routine)
Port-Gentil	Gabon	Record daily precipitation	39.9 mm (1.6 in)	30 of 100 (Routine)
El Nogal	Mexico	Record low maximum temperature	15.6 C (60.1 F)	30 of 100 (Routine)
Jalacingo	Mexico	Record daily precipitation	99.8 mm (3.9 in)	30 of 100 (Routine)
Ulu-Teljak	Russia	Record daily precipitation	31.4 mm (1.2 in)	30 of 100 (Routine)
Tipton	United States	Record low minimum temperature	2.2 C (36.0 F)	30 of 100 (Routine)
Janesville	United States	Record low minimum temperature	2.2 C (36.0 F)	30 of 100 (Routine)
Ojinaga (Smn)	Mexico	Record high minimum temperature	26.7 C (80.1 F)	29 of 100 (Routine)
Chaparaco	Mexico	Record low maximum temperature	19.4 C (66.9 F)	29 of 100 (Routine)
Tucson Magnetic Obsy	United States	Record high minimum temperature	27.2 C (81.0 F)	29 of 100 (Routine)
Red Lake Falls	United States	Record low minimum temperature	-2.2 C (28.0 F)	29 of 100 (Routine)
Gospic	Croatia	Record daily precipitation	60.5 mm (2.4 in)	28 of 100 (Routine)
Motozintla (Smn)	Mexico	Record low minimum temperature	8.9 C (48.0 F)	28 of 100 (Routine)
Ciudad Hidalgo (Smn)	Mexico	Record low maximum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
San Juan del Rio	Mexico	Record daily precipitation	75.7 mm (3.0 in)	28 of 100 (Routine)
Hollister	United States	Record high minimum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Goshen 3SW	United States	Record low maximum temperature	16.7 C (62.1 F)	28 of 100 (Routine)
Poncitlan	Mexico	Record low maximum temperature	22.2 C (72.0 F)	27 of 100 (Routine)
Huauchinango	Mexico	Record low maximum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
San Pedro Piedra Gorda -Ciuda	Mexico	Record low maximum temperature	16.7 C (62.1 F)	27 of 100 (Routine)
Riverside Fire STN 3	United States	Record high minimum temperature	20.0 C (68.0 F)	27 of 100 (Routine)
Oshkosh	United States	Record low maximum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Gascon	United States	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Findlay Wpcc	United States	Record low maximum temperature	16.7 C (62.1 F)	27 of 100 (Routine)
Valle de Santiago	Mexico	Record low maximum temperature	21.7 C (71.1 F)	26 of 100 (Routine)

Counts by Type and Timescale

766 records

Records set or tied on 15 September 1984 by type: Highest daily maximum 51, Lowest daily maximum 261, Highest daily minimum 113, Lowest daily minimum 107, Heaviest daily rainfall 234.

Records on 15 September 1984 by type
Record type	Records
Highest daily maximum	51
Lowest daily maximum	261
Highest daily minimum	113
Lowest daily minimum	107
Heaviest daily rainfall	234
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 September 1984 by timescale: all-time 0, monthly 6, daily 760.

How Much Records Were Beaten By

572 broken records

Margins by which the 572 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 121.4. Ties are not counted.

Top 20 by Significance

15 September 1984

Top 20 records on 15 September 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 1984	Tabou, CI	monthly rain	218.9 mm (8.6 in)	73.0 mm (2.9 in)	32 years	63 of 100 (Major)
15 September 1984	Juchitan de Zaragoza, MX	daily rain	160.3 mm (6.3 in)	121.4 mm (4.8 in)	22 years	50 of 100 (Notable)
15 September 1984	Misantla, MX	daily rain	132.8 mm (5.2 in)	84.8 mm (3.3 in)	36 years	45 of 100 (Notable)
15 September 1984	Vestmannaeyjar, IS	daily rain	66.7 mm (2.6 in)	50.1 mm (2.0 in)	5 years	44 of 100 (Notable)
15 September 1984	Wharton, US	daily rain	49.8 mm (2.0 in)	31.0 mm (1.2 in)	80 years	44 of 100 (Notable)
15 September 1984	Tlatlauquitepec (Cfe), MX	daily rain	119.9 mm (4.7 in)	81.0 mm (3.2 in)	5 years	40 of 100 (Notable)
15 September 1984	Mora, US	daily low min	-6.1 C (21.0 F)	4.4 C (7.9 F)	80 years	40 of 100 (Notable)
15 September 1984	Cape Moreton Lighthouse, AU	daily rain	43.2 mm (1.7 in)	4.8 mm (0.19 in)	89 years	39 of 100 (Notable)
15 September 1984	Pierce 1 E, US	daily rain	76.2 mm (3.0 in)	54.6 mm (2.1 in)	8 years	39 of 100 (Notable)
15 September 1984	Welverdiend (Pol), ZA	daily rain	34.2 mm (1.3 in)	15.4 mm (0.6 in)	55 years	38 of 100 (Notable)
15 September 1984	Utuado, PR	daily low max	27.8 C (82.0 F)	3.3 C (5.9 F)	29 years	37 of 100 (Notable)
15 September 1984	Primghar, US	daily low min	-0.6 C (30.9 F)	2.3 C (4.1 F)	83 years	37 of 100 (Notable)
15 September 1984	Miltonvale, US	daily rain	65.8 mm (2.6 in)	50.6 mm (2.0 in)	15 years	37 of 100 (Notable)
15 September 1984	Brodhead Wwtp, US	daily low min	-1.7 C (28.9 F)	2.3 C (4.1 F)	80 years	36 of 100 (Notable)
15 September 1984	Santa Barbara, US	daily high min	17.8 C (64.0 F)	0.6 C (1.1 F)	80 years	35 of 100 (Notable)
15 September 1984	Olney 2S, US	daily low max	18.3 C (64.9 F)	1.7 C (3.1 F)	80 years	35 of 100 (Notable)
15 September 1984	Yealering, AU	daily rain	31.6 mm (1.2 in)	4.2 mm (0.17 in)	66 years	34 of 100 (Routine)
15 September 1984	Akron 4 E, US	daily low max	10.6 C (51.1 F)	3.3 C (5.9 F)	68 years	34 of 100 (Routine)
15 September 1984	Elkader 6 SSW, US	daily low min	-1.1 C (30.0 F)	1.1 C (2.0 F)	80 years	34 of 100 (Routine)
15 September 1984	Woomera (Mahanewo), AU	daily rain	25.2 mm (1.0 in)	7.9 mm (0.31 in)	52 years	33 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

1797 to 1984

Records set or tied on this calendar date in each year from 1797 to 1984. 1984 had 766 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 1984-09-15: 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	547
20 to 40	10
40 to 60	9
60 to 80	2
80 to 100	3
100 to 120	0
120 to 140	1