Weather Records on 12 September 1984

700 weather records were set or tied worldwide on 12 September 1984. Highest significance: Escanaba, US.

Key Facts for 12 September 1984

On 12 September 1984, 700 weather records were set or tied at long-record stations worldwide.
262 were record highs and 180 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 21 monthly and 678 daily.
Escanaba set a daily record precipitation of 69.9 mm (2.8 in) on 12 September 1984.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 412 records.

Record Map

700 stations

700 station records on 12 September 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Escanaba	United States	Record daily precipitation	69.9 mm (2.8 in)	69 of 100 (Major)
Poona	India	Record daily precipitation	87.9 mm (3.5 in)	66 of 100 (Major)
Tonala (Smn)	Mexico	Record daily precipitation	175.8 mm (6.9 in)	60 of 100 (Major)
Misantla	Mexico	Record daily precipitation	243.8 mm (9.6 in)	58 of 100 (Notable)
Sao Goncalo	Brazil	Record daily precipitation	50.0 mm (2.0 in)	56 of 100 (Notable)
Morpara	Brazil	Record daily precipitation	50.4 mm (2.0 in)	55 of 100 (Notable)
Sturt Creek	Australia	Record daily precipitation	26.0 mm (1.0 in)	54 of 100 (Notable)
Alexandria	Australia	Record daily precipitation	33.0 mm (1.3 in)	53 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low minimum temperature	14.4 C (57.9 F)	50 of 100 (Notable)
Brady	United States	Record high minimum temperature	25.6 C (78.1 F)	50 of 100 (Notable)
Big Piney	United States	Record daily precipitation	33.8 mm (1.3 in)	50 of 100 (Notable)
Caledonia	United States	Record daily precipitation	58.2 mm (2.3 in)	49 of 100 (Notable)
Southport 5 N	United States	Record daily precipitation	132.1 mm (5.2 in)	48 of 100 (Notable)
Wilmington 7 N	United States	Record daily precipitation	177.8 mm (7.0 in)	48 of 100 (Notable)
Boggabri (Kanownda)	Australia	Record daily precipitation	66.0 mm (2.6 in)	47 of 100 (Notable)
Corozal Substn	Puerto Rico [United States]	Record daily precipitation	90.2 mm (3.6 in)	46 of 100 (Notable)
McGill	United States	Record daily precipitation	36.3 mm (1.4 in)	46 of 100 (Notable)
Ostuta	Mexico	Record daily precipitation	296.4 mm (11.7 in)	45 of 100 (Notable)
Wilgeboom (Bos)	South Africa	Record daily precipitation	56.0 mm (2.2 in)	44 of 100 (Notable)
Vlakkloof Estate	South Africa	Record daily precipitation	53.0 mm (2.1 in)	43 of 100 (Notable)
Elkedra	Australia	Record daily precipitation	26.5 mm (1.0 in)	42 of 100 (Notable)
Stjarnsund	Sweden	Record daily precipitation	42.0 mm (1.7 in)	42 of 100 (Notable)
Gorki	Belarus	Record daily precipitation	32.2 mm (1.3 in)	41 of 100 (Notable)
Puebla (Dge)	Mexico	Record low minimum temperature	5.0 C (41.0 F)	40 of 100 (Notable)
Jalacingo	Mexico	Record daily precipitation	110.0 mm (4.3 in)	40 of 100 (Notable)
Ulricehamn	Sweden	Record low maximum temperature	8.0 C (46.4 F)	40 of 100 (Notable)
Grace	United States	Record daily precipitation	30.2 mm (1.2 in)	40 of 100 (Notable)
Velikie Luki	Russia	Record daily precipitation	29.9 mm (1.2 in)	37 of 100 (Notable)
Flahult	Sweden	Record low maximum temperature	9.2 C (48.6 F)	37 of 100 (Notable)
Coldwater	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Manistique Wwtp	United States	Record daily precipitation	61.0 mm (2.4 in)	37 of 100 (Notable)
Bourke Post Office	Australia	Record low minimum temperature	0.8 C (33.4 F)	36 of 100 (Notable)
Villa Cuauhtemoc	Mexico	Record daily precipitation	199.9 mm (7.9 in)	36 of 100 (Notable)
Letaba Estates	South Africa	Record daily precipitation	43.6 mm (1.7 in)	36 of 100 (Notable)
Riggins	United States	Record low minimum temperature	-0.6 C (30.9 F)	36 of 100 (Notable)
Horton	United States	Record high maximum temperature	36.7 C (98.1 F)	36 of 100 (Notable)
Winona	United States	Record daily precipitation	54.1 mm (2.1 in)	36 of 100 (Notable)
San Miguelito	Mexico	Record low maximum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Leksand	Sweden	Record daily precipitation	25.5 mm (1.0 in)	34 of 100 (Routine)
Greensburg	United States	Record high minimum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
Las Vigas	Mexico	Record low minimum temperature	1.7 C (35.1 F)	33 of 100 (Routine)
Weltevreden	South Africa	Record daily precipitation	33.6 mm (1.3 in)	33 of 100 (Routine)
Epping	United States	Record daily precipitation	48.3 mm (1.9 in)	33 of 100 (Routine)
Carrera Larga	Mexico	Record daily precipitation	161.3 mm (6.4 in)	32 of 100 (Routine)
Juchitan de Zaragoza	Mexico	Record low minimum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Kakinada	India	Record daily precipitation	27.9 mm (1.1 in)	31 of 100 (Routine)
Nikolaevskoe	Russia	Record daily precipitation	36.6 mm (1.4 in)	31 of 100 (Routine)
Leeuwfontein	South Africa	Record daily precipitation	37.2 mm (1.5 in)	31 of 100 (Routine)
Elkhart	United States	Record high maximum temperature	38.3 C (100.9 F)	31 of 100 (Routine)
Marshfield 4 WSW	United States	Record high minimum temperature	23.3 C (73.9 F)	31 of 100 (Routine)
Heber	United States	Record high minimum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Wisconsin Rapids	United States	Record daily precipitation	47.5 mm (1.9 in)	31 of 100 (Routine)
Barra Do Gil (I.de Itaparica)	Brazil	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Atzalan	Mexico	Record daily precipitation	110.0 mm (4.3 in)	30 of 100 (Routine)
Detour Village	United States	Record daily precipitation	64.8 mm (2.6 in)	30 of 100 (Routine)
Bochil	Mexico	Record low maximum temperature	21.7 C (71.1 F)	29 of 100 (Routine)
San Andres	Mexico	Record low maximum temperature	25.0 C (77.0 F)	29 of 100 (Routine)
Zacatecas (Smn)	Mexico	Record low maximum temperature	15.0 C (59.0 F)	29 of 100 (Routine)
Boras	Sweden	Record low maximum temperature	8.9 C (48.0 F)	29 of 100 (Routine)
Live Oak	United States	Record high maximum temperature	36.1 C (97.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

700 records

Records set or tied on 12 September 1984 by type: Highest daily maximum 108, Lowest daily maximum 112, Highest daily minimum 154, Lowest daily minimum 68, Heaviest daily rainfall 257, Deepest snow cover 1.

Records on 12 September 1984 by type
Record type	Records
Highest daily maximum	108
Lowest daily maximum	112
Highest daily minimum	154
Lowest daily minimum	68
Heaviest daily rainfall	257
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 12 September 1984 by timescale: all-time 1, monthly 21, daily 678.

How Much Records Were Beaten By

526 broken records

Margins by which the 526 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 224.5. Ties are not counted.

Top 20 by Significance

12 September 1984

Top 20 records on 12 September 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 1984	Escanaba, US	daily rain	69.9 mm (2.8 in)	36.4 mm (1.4 in)	68 years	69 of 100 (Major)
12 September 1984	Poona, IN	daily rain	87.9 mm (3.5 in)	57.2 mm (2.3 in)	68 years	66 of 100 (Major)
12 September 1984	Tonala (Smn), MX	daily rain	175.8 mm (6.9 in)	119.9 mm (4.7 in)	50 years	60 of 100 (Major)
12 September 1984	Misantla, MX	daily rain	243.8 mm (9.6 in)	162.0 mm (6.4 in)	40 years	58 of 100 (Notable)
12 September 1984	Sao Goncalo, BR	monthly rain	50.0 mm (2.0 in)	23.9 mm (0.9 in)	33 years	56 of 100 (Notable)
12 September 1984	Morpara, BR	daily rain	50.4 mm (2.0 in)	50.4 mm (2.0 in)	38 years	55 of 100 (Notable)
12 September 1984	Sturt Creek, AU	daily rain	26.0 mm (1.0 in)	24.0 mm (0.9 in)	74 years	54 of 100 (Notable)
12 September 1984	Alexandria, AU	daily rain	33.0 mm (1.3 in)	22.8 mm (0.9 in)	67 years	53 of 100 (Notable)
12 September 1984	Ponce 4 E, PR	monthly low min	14.4 C (57.9 F)	3.4 C (6.1 F)	10 years	50 of 100 (Notable)
12 September 1984	Brady, US	monthly high min	25.6 C (78.1 F)	1.7 C (3.1 F)	90 years	50 of 100 (Notable)
12 September 1984	Big Piney, US	daily rain	33.8 mm (1.3 in)	22.4 mm (0.9 in)	26 years	50 of 100 (Notable)
12 September 1984	Caledonia, US	daily rain	58.2 mm (2.3 in)	29.5 mm (1.2 in)	67 years	49 of 100 (Notable)
12 September 1984	Southport 5 N, US	daily rain	132.1 mm (5.2 in)	63.3 mm (2.5 in)	55 years	48 of 100 (Notable)
12 September 1984	Wilmington 7 N, US	daily rain	177.8 mm (7.0 in)	78.2 mm (3.1 in)	24 years	48 of 100 (Notable)
12 September 1984	Boggabri (Kanownda), AU	monthly rain	66.0 mm (2.6 in)	12.4 mm (0.5 in)	50 years	47 of 100 (Notable)
12 September 1984	Corozal Substn, PR	daily rain	90.2 mm (3.6 in)	39.4 mm (1.6 in)	49 years	46 of 100 (Notable)
12 September 1984	McGill, US	daily rain	36.3 mm (1.4 in)	22.1 mm (0.9 in)	9 years	46 of 100 (Notable)
12 September 1984	Ostuta, MX	daily rain	296.4 mm (11.7 in)	224.5 mm (8.8 in)	9 years	45 of 100 (Notable)
12 September 1984	Wilgeboom (Bos), ZA	daily rain	56.0 mm (2.2 in)	44.0 mm (1.7 in)	27 years	44 of 100 (Notable)
12 September 1984	Vlakkloof Estate, ZA	daily rain	53.0 mm (2.1 in)	33.0 mm (1.3 in)	25 years	43 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 700 records.

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

Records on 09-12 in each year
Year	Records
1793	2
1809	1
1813	1
1814	2
1834	1
1837	2
1839	1
1847	1
1848	1
1854	4
1859	2
1860	2
1865	2
1866	1
1867	1
1868	2
1869	1
1872	2
1876	1
1878	1
1880	1
1881	1
1882	1
1884	2
1885	2
1886	1
1887	2
1888	2
1889	1
1891	4
1892	1
1893	4
1894	1
1895	5
1896	2
1897	3
1898	3
1899	4
1900	1
1901	5
1902	11
1903	18
1904	7
1905	8
1906	24
1907	11
1908	12
1909	11
1910	4
1911	15
1912	20
1913	12
1914	49
1915	71
1916	21
1917	231
1918	42
1919	69
1920	49
1921	60
1922	136
1923	33
1924	177
1925	443
1926	89
1927	339
1928	155
1929	118
1930	198
1931	648
1932	199
1933	360
1934	176
1935	441
1936	515
1937	318
1938	332
1939	702
1940	891
1941	172
1942	337
1943	544
1944	393
1945	414
1946	302
1947	596
1948	292
1949	512
1950	578
1951	399
1952	575
1953	515
1954	313
1955	457
1956	389
1957	727
1958	783
1959	536
1960	772
1961	750
1962	407
1963	466
1964	836
1965	459
1966	416
1967	510
1968	428
1969	558
1970	619
1971	593
1972	430
1973	588
1974	575
1975	1,102
1976	539
1977	524
1978	952
1979	765
1980	511
1981	424
1982	993
1983	915
1984	700
1985	876
1986	787
1987	686
1988	997
1989	1,313
1990	1,001
1991	672
1992	767
1993	798
1994	550
1995	532
1996	1,014
1997	737
1998	1,770
1999	938
2000	1,188
2001	797
2002	883
2003	830
2004	653
2005	1,032
2006	963
2007	776
2008	1,213
2009	876
2010	939
2011	988
2012	639
2013	1,066
2014	1,374
2015	704
2016	748
2017	1,114
2018	595
2019	884
2020	566
2021	513
2022	739
2023	844
2024	1,009
2025	433
2026	627

Download the Data

Data for records on 1984-09-12: 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	515
50 to 100	8
100 to 150	1
150 to 200	1
200 to 250	1