Weather Records on 4 September 1984

1,107 weather records were set or tied worldwide on 4 September 1984. Highest significance: Worcester, ZA.

Key Facts for 4 September 1984

On 4 September 1984, 1,107 weather records were set or tied at long-record stations worldwide.
236 were record highs and 323 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 24 monthly and 1,081 daily.
Worcester set a daily record precipitation of 36.0 mm (1.4 in) on 4 September 1984.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 447 records.

Record Map

1,107 stations

1,107 station records on 4 September 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 September 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Worcester	South Africa	Record daily precipitation	36.0 mm (1.4 in)	75 of 100 (Major)
Tulbagh (Pol)	South Africa	Record daily precipitation	52.0 mm (2.0 in)	75 of 100 (Major)
Cape Northumberland	Australia	Record daily precipitation	26.8 mm (1.1 in)	63 of 100 (Major)
St Patricks River (Targa Farm)	Australia	Record daily precipitation	92.0 mm (3.6 in)	56 of 100 (Notable)
Viewmount	Australia	Record daily precipitation	41.0 mm (1.6 in)	53 of 100 (Notable)
Gauhati	India	Record daily precipitation	96.0 mm (3.8 in)	52 of 100 (Notable)
Teocelo	Mexico	Record daily precipitation	149.9 mm (5.9 in)	52 of 100 (Notable)
Villa Cuauhtemoc	Mexico	Record daily precipitation	199.9 mm (7.9 in)	51 of 100 (Notable)
San Cristobal	Mexico	Record daily precipitation	66.8 mm (2.6 in)	50 of 100 (Notable)
Bettborn-Pratz	Luxembourg	Record daily precipitation	31.0 mm (1.2 in)	49 of 100 (Notable)
Vrugbaar	South Africa	Record daily precipitation	42.0 mm (1.7 in)	49 of 100 (Notable)
Agterkop	South Africa	Record daily precipitation	38.5 mm (1.5 in)	48 of 100 (Notable)
Blankenrath	Germany	Record daily precipitation	31.0 mm (1.2 in)	47 of 100 (Notable)
Olands Sodra Udde	Sweden	Record daily precipitation	26.0 mm (1.0 in)	47 of 100 (Notable)
Plain Dealing	United States	Record daily precipitation	50.5 mm (2.0 in)	47 of 100 (Notable)
Carbean	Australia	Record daily precipitation	51.2 mm (2.0 in)	46 of 100 (Notable)
Nurburg	Germany	Record daily precipitation	27.4 mm (1.1 in)	46 of 100 (Notable)
Hano_A	Sweden	Record daily precipitation	29.7 mm (1.2 in)	46 of 100 (Notable)
Gassaway	United States	Record daily precipitation	84.3 mm (3.3 in)	46 of 100 (Notable)
Longford (Denton Close)	Australia	Record daily precipitation	32.2 mm (1.3 in)	45 of 100 (Notable)
Valga	Estonia	Record daily precipitation	40.4 mm (1.6 in)	45 of 100 (Notable)
Lund	Sweden	Record daily precipitation	31.6 mm (1.2 in)	45 of 100 (Notable)
Chatillon-Coligny	France	Record daily precipitation	35.0 mm (1.4 in)	44 of 100 (Notable)
Almhult	Sweden	Record daily precipitation	40.4 mm (1.6 in)	44 of 100 (Notable)
Blue Hill Coop	United States	Record low maximum temperature	13.3 C (55.9 F)	44 of 100 (Notable)
Delmiro Gouveia (Pedra)	Brazil	Record daily precipitation	41.4 mm (1.6 in)	43 of 100 (Notable)
Coyuquilla	Mexico	Record daily precipitation	186.4 mm (7.3 in)	43 of 100 (Notable)
Hirado	Japan	Record daily precipitation	123.5 mm (4.9 in)	41 of 100 (Notable)
Paarl (Tnk)	South Africa	Record daily precipitation	37.5 mm (1.5 in)	41 of 100 (Notable)
Lokenburg	South Africa	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Ny City Cntrl Park	United States	Record low maximum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Carrick (Oaks Road)	Australia	Record daily precipitation	33.2 mm (1.3 in)	40 of 100 (Notable)
Wien	Austria	Record high minimum temperature	19.3 C (66.7 F)	40 of 100 (Notable)
Baden-Baden-Geroldsau	Germany	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Bensheim	Germany	Record daily precipitation	25.7 mm (1.0 in)	40 of 100 (Notable)
Kamenskoe	Russia	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Kamenskoe	Russia	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Podor	Senegal	Record high minimum temperature	27.1 C (80.8 F)	40 of 100 (Notable)
Haparanda	Sweden	Record low maximum temperature	8.4 C (47.1 F)	40 of 100 (Notable)
Horby	Sweden	Record daily precipitation	32.6 mm (1.3 in)	40 of 100 (Notable)
Olastorp	Sweden	Record daily precipitation	32.0 mm (1.3 in)	40 of 100 (Notable)
Felipe Carrillo Puerto (Obs)	Mexico	Record daily precipitation	65.0 mm (2.6 in)	39 of 100 (Notable)
Metztitlan	Mexico	Record daily precipitation	64.8 mm (2.6 in)	39 of 100 (Notable)
Felipe Carrillo Puerto (Dge)	Mexico	Record daily precipitation	64.8 mm (2.6 in)	39 of 100 (Notable)
San Nicolas Is	United States	Record high minimum temperature	22.8 C (73.0 F)	39 of 100 (Notable)
Poitiers - Biard	France	Record daily precipitation	30.2 mm (1.2 in)	38 of 100 (Notable)
Chicontepec de Tejeda (Smn)	Mexico	Record daily precipitation	159.8 mm (6.3 in)	38 of 100 (Notable)
Little Falls City Rsch	United States	Record low maximum temperature	13.3 C (55.9 F)	38 of 100 (Notable)
Sankt_Olof	Sweden	Record daily precipitation	34.0 mm (1.3 in)	37 of 100 (Notable)
Hassleholm	Sweden	Record daily precipitation	35.0 mm (1.4 in)	37 of 100 (Notable)
Karlshamn	Sweden	Record daily precipitation	30.2 mm (1.2 in)	37 of 100 (Notable)
Effingham 3SW	United States	Record low maximum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Hesperia 4 WNW	United States	Record low maximum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Beaconsfield (Mine & Heritage	Australia	Record daily precipitation	26.4 mm (1.0 in)	36 of 100 (Notable)
Tuzantla (Smn)	Mexico	Record low minimum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Napoopoo 28	United States	Record daily precipitation	39.9 mm (1.6 in)	36 of 100 (Notable)
Huaquechula	Mexico	Record daily precipitation	65.8 mm (2.6 in)	35 of 100 (Notable)
Malmesbury	South Africa	Record daily precipitation	28.5 mm (1.1 in)	35 of 100 (Notable)
Die Hoop	South Africa	Record daily precipitation	32.0 mm (1.3 in)	35 of 100 (Notable)
Pitea	Sweden	Record low maximum temperature	7.9 C (46.2 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,107 records

Records set or tied on 4 September 1984 by type: Highest daily maximum 71, Lowest daily maximum 209, Highest daily minimum 165, Lowest daily minimum 114, Heaviest daily rainfall 548.

Records on 4 September 1984 by type
Record type	Records
Highest daily maximum	71
Lowest daily maximum	209
Highest daily minimum	165
Lowest daily minimum	114
Heaviest daily rainfall	548
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 September 1984 by timescale: all-time 2, monthly 24, daily 1,081.

How Much Records Were Beaten By

928 broken records

Margins by which the 928 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 145.0. Ties are not counted.

Top 20 by Significance

4 September 1984

Top 20 records on 4 September 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 September 1984	Worcester, ZA	daily rain	36.0 mm (1.4 in)	26.9 mm (1.1 in)	103 years	75 of 100 (Major)
4 September 1984	Tulbagh (Pol), ZA	daily rain	52.0 mm (2.0 in)	32.2 mm (1.3 in)	103 years	75 of 100 (Major)
4 September 1984	Cape Northumberland, AU	daily rain	26.8 mm (1.1 in)	10.5 mm (0.4 in)	100 years	63 of 100 (Major)
4 September 1984	St Patricks River (Targa Farm), AU	daily rain	92.0 mm (3.6 in)	46.0 mm (1.8 in)	39 years	56 of 100 (Notable)
4 September 1984	Viewmount, AU	daily rain	41.0 mm (1.6 in)	34.9 mm (1.4 in)	37 years	53 of 100 (Notable)
4 September 1984	Gauhati, IN	daily rain	96.0 mm (3.8 in)	81.5 mm (3.2 in)	28 years	52 of 100 (Notable)
4 September 1984	Teocelo, MX	daily rain	149.9 mm (5.9 in)	95.5 mm (3.8 in)	27 years	52 of 100 (Notable)
4 September 1984	Villa Cuauhtemoc, MX	daily rain	199.9 mm (7.9 in)	145.0 mm (5.7 in)	29 years	51 of 100 (Notable)
4 September 1984	San Cristobal, MX	daily rain	66.8 mm (2.6 in)	46.0 mm (1.8 in)	29 years	50 of 100 (Notable)
4 September 1984	Bettborn-Pratz, LU	daily rain	31.0 mm (1.2 in)	22.9 mm (0.9 in)	23 years	49 of 100 (Notable)
4 September 1984	Vrugbaar, ZA	daily rain	42.0 mm (1.7 in)	22.4 mm (0.9 in)	49 years	49 of 100 (Notable)
4 September 1984	Agterkop, ZA	daily rain	38.5 mm (1.5 in)	25.8 mm (1.0 in)	46 years	48 of 100 (Notable)
4 September 1984	Blankenrath, DE	daily rain	31.0 mm (1.2 in)	19.8 mm (0.8 in)	22 years	47 of 100 (Notable)
4 September 1984	Olands Sodra Udde, SE	daily rain	26.0 mm (1.0 in)	8.4 mm (0.33 in)	74 years	47 of 100 (Notable)
4 September 1984	Plain Dealing, US	daily rain	50.5 mm (2.0 in)	25.1 mm (1.0 in)	80 years	47 of 100 (Notable)
4 September 1984	Carbean, AU	daily rain	51.2 mm (2.0 in)	44.1 mm (1.7 in)	13 years	46 of 100 (Notable)
4 September 1984	Nurburg, DE	daily rain	27.4 mm (1.1 in)	20.5 mm (0.8 in)	8 years	46 of 100 (Notable)
4 September 1984	Hano_A, SE	daily rain	29.7 mm (1.2 in)	7.2 mm (0.28 in)	74 years	46 of 100 (Notable)
4 September 1984	Gassaway, US	daily rain	84.3 mm (3.3 in)	65.5 mm (2.6 in)	3 years	46 of 100 (Notable)
4 September 1984	Longford (Denton Close), AU	daily rain	32.2 mm (1.3 in)	14.4 mm (0.6 in)	39 years	45 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

1802 to 1984

Records set or tied on this calendar date in each year from 1802 to 1984. 1984 had 1,107 records.

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

Records on 09-04 in each year
Year	Records
1802	1
1805	1
1823	1
1833	1
1837	1
1839	1
1845	1
1847	1
1850	1
1854	1
1856	1
1857	1
1858	1
1861	1
1863	1
1864	1
1867	1
1868	1
1869	2
1871	1
1872	4
1874	1
1875	1
1877	1
1880	4
1881	1
1883	2
1885	3
1887	1
1888	2
1889	1
1890	1
1891	5
1894	4
1895	6
1896	1
1897	4
1898	9
1899	4
1900	1
1901	4
1902	4
1903	2
1904	7
1905	18
1906	16
1907	22
1908	9
1909	23
1910	91
1911	25
1912	29
1913	29
1914	19
1915	37
1916	24
1917	40
1918	96
1919	48
1920	105
1921	105
1922	62
1923	325
1924	167
1925	339
1926	256
1927	68
1928	341
1929	371
1930	102
1931	477
1932	429
1933	424
1934	393
1935	514
1936	309
1937	411
1938	236
1939	434
1940	287
1941	528
1942	323
1943	472
1944	341
1945	542
1946	431
1947	618
1948	409
1949	370
1950	642
1951	404
1952	645
1953	869
1954	372
1955	465
1956	586
1957	250
1958	384
1959	316
1960	552
1961	909
1962	733
1963	443
1964	507
1965	611
1966	428
1967	786
1968	546
1969	510
1970	644
1971	717
1972	513
1973	530
1974	2,279
1975	432
1976	582
1977	386
1978	940
1979	461
1980	355
1981	582
1982	617
1983	1,040
1984	1,107
1985	915
1986	663
1987	685
1988	1,259
1989	681
1990	787
1991	708
1992	1,132
1993	859
1994	1,001
1995	1,287
1996	907
1997	1,452
1998	1,564
1999	1,479
2000	1,336
2001	833
2002	767
2003	1,094
2004	898
2005	998
2006	1,268
2007	1,077
2008	1,335
2009	914
2010	1,804
2011	1,310
2012	1,209
2013	630
2014	461
2015	893
2016	597
2017	881
2018	758
2019	616
2020	957
2021	544
2022	1,256
2023	1,290
2024	985
2025	635
2026	1,222

Download the Data

Data for records on 1984-09-04: 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	879
20 to 40	32
40 to 60	9
60 to 80	2
80 to 100	4
100 to 120	1
120 to 140	0
140 to 160	1