Weather Records on 1 September 1984

619 weather records were set or tied worldwide on 1 September 1984. Highest significance: Wirrabara Forest, AU.

Key Facts for 1 September 1984

On 1 September 1984, 619 weather records were set or tied at long-record stations worldwide.
306 were record highs and 153 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 67 monthly and 547 daily.
Wirrabara Forest set a daily record precipitation of 96.0 mm (3.8 in) on 1 September 1984.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 440 records.

Record Map

619 stations

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

Weather records on 1 September 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wirrabara Forest	Australia	Record daily precipitation	96.0 mm (3.8 in)	72 of 100 (Major)
Snowflake	United States	Record daily precipitation	50.3 mm (2.0 in)	63 of 100 (Major)
Groenvlei	South Africa	Record daily precipitation	43.5 mm (1.7 in)	60 of 100 (Major)
Tuxtla Gutierrez (Dge)	Mexico	Record daily precipitation	148.1 mm (5.8 in)	58 of 100 (Notable)
Jian	China	Record daily precipitation	152.5 mm (6.0 in)	53 of 100 (Notable)
Murray Town (Doughboy Creek)	Australia	Record daily precipitation	58.0 mm (2.3 in)	48 of 100 (Notable)
Nanchang	China	Record daily precipitation	134.4 mm (5.3 in)	46 of 100 (Notable)
Chiang Rai	Thailand	Record daily precipitation	116.9 mm (4.6 in)	46 of 100 (Notable)
Deer Valley	United States	Record daily precipitation	34.3 mm (1.4 in)	45 of 100 (Notable)
Green Bay	United States	Record daily precipitation	39.9 mm (1.6 in)	44 of 100 (Notable)
Martim Francisco	Brazil	Record daily precipitation	42.2 mm (1.7 in)	43 of 100 (Notable)
Zuni	United States	Record daily precipitation	50.0 mm (2.0 in)	43 of 100 (Notable)
Tarcowie	Australia	Record daily precipitation	32.0 mm (1.3 in)	41 of 100 (Notable)
Ganzhou	China	Record daily precipitation	118.4 mm (4.7 in)	41 of 100 (Notable)
Incheon	Korea, South	Record daily precipitation	268.0 mm (10.6 in)	40 of 100 (Notable)
Oxford	United Kingdom	Record high minimum temperature	16.4 C (61.5 F)	40 of 100 (Notable)
Redington	United States	Record daily precipitation	41.9 mm (1.6 in)	40 of 100 (Notable)
St Petersburg	United States	Record high minimum temperature	27.8 C (82.0 F)	40 of 100 (Notable)
Saint Maries	United States	Record low maximum temperature	10.6 C (51.1 F)	40 of 100 (Notable)
La Junta	Mexico	Record daily precipitation	67.3 mm (2.6 in)	39 of 100 (Notable)
Griggs 3 W	United States	Record daily precipitation	32.5 mm (1.3 in)	39 of 100 (Notable)
Sidney 1SSE	United States	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Nashville 1 E	United States	Record high maximum temperature	37.8 C (100.0 F)	37 of 100 (Notable)
Denison	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Angleton 2 W	United States	Record daily precipitation	78.7 mm (3.1 in)	36 of 100 (Notable)
Inhambupe	Brazil	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Tiskilwa 2 SE	United States	Record high maximum temperature	35.0 C (95.0 F)	35 of 100 (Notable)
Minden	United States	Record high maximum temperature	41.7 C (107.1 F)	35 of 100 (Notable)
Snoqualmie Falls	United States	Record low minimum temperature	2.2 C (36.0 F)	35 of 100 (Notable)
Springfield Abraham Lincoln Ca	United States	Record high maximum temperature	38.3 C (100.9 F)	35 of 100 (Notable)
Juchitan de Zaragoza	Mexico	Record low minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Bethany	United States	Record high minimum temperature	26.1 C (79.0 F)	34 of 100 (Routine)
Princeton	United States	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Phoenix AP	United States	Record daily precipitation	30.7 mm (1.2 in)	34 of 100 (Routine)
Bolonchen	Mexico	Record low maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Geneseo	United States	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Horton	United States	Record high minimum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Paola	United States	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
Anqing	China	Record daily precipitation	110.8 mm (4.4 in)	32 of 100 (Routine)
Cet Central England	United Kingdom	Record high minimum temperature	16.4 C (61.5 F)	32 of 100 (Routine)
Knoxville	United States	Record high maximum temperature	38.3 C (100.9 F)	32 of 100 (Routine)
Kearney 4 NE	United States	Record high minimum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Lavon Dam	United States	Record high minimum temperature	28.9 C (84.0 F)	32 of 100 (Routine)
Ocozocoautla	Mexico	Record daily precipitation	79.8 mm (3.1 in)	31 of 100 (Routine)
Mason City	United States	Record high maximum temperature	36.7 C (98.1 F)	31 of 100 (Routine)
Winterset 4N	United States	Record high minimum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Atchison	United States	Record high minimum temperature	26.7 C (80.1 F)	31 of 100 (Routine)
Mankato	United States	Record high maximum temperature	38.9 C (102.0 F)	31 of 100 (Routine)
Waverly	United States	Record low minimum temperature	5.0 C (41.0 F)	31 of 100 (Routine)
Malin Head	Ireland	Record daily precipitation	26.5 mm (1.0 in)	30 of 100 (Routine)
Chanchichimila	Mexico	Record low minimum temperature	16.7 C (62.1 F)	30 of 100 (Routine)
Gijon la Merced	Spain	Record high maximum temperature	28.4 C (83.1 F)	30 of 100 (Routine)
Knoxville	United States	Record high minimum temperature	24.4 C (75.9 F)	30 of 100 (Routine)
Cassville 1 NE	United States	Record high maximum temperature	37.8 C (100.0 F)	30 of 100 (Routine)
Khon Kaen	Thailand	Record daily precipitation	88.9 mm (3.5 in)	29 of 100 (Routine)
Bartlett Dam	United States	Record daily precipitation	33.8 mm (1.3 in)	29 of 100 (Routine)
Hull	United Kingdom	Record high minimum temperature	17.7 C (63.9 F)	28 of 100 (Routine)
New Hampton	United States	Record high maximum temperature	35.6 C (96.1 F)	28 of 100 (Routine)
Medicine Lake 3 SE	United States	Record low maximum temperature	15.0 C (59.0 F)	28 of 100 (Routine)
Harlan Co Lake	United States	Record high maximum temperature	40.0 C (104.0 F)	28 of 100 (Routine)

Counts by Type and Timescale

619 records

Records set or tied on 1 September 1984 by type: Highest daily maximum 144, Lowest daily maximum 59, Highest daily minimum 162, Lowest daily minimum 94, Heaviest daily rainfall 160.

Records on 1 September 1984 by type
Record type	Records
Highest daily maximum	144
Lowest daily maximum	59
Highest daily minimum	162
Lowest daily minimum	94
Heaviest daily rainfall	160
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 September 1984 by timescale: all-time 5, monthly 67, daily 547.

How Much Records Were Beaten By

446 broken records

Margins by which the 446 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 81.8. Ties are not counted.

Top 20 by Significance

1 September 1984

Top 20 records on 1 September 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 1984	Wirrabara Forest, AU	daily rain	96.0 mm (3.8 in)	45.2 mm (1.8 in)	76 years	72 of 100 (Major)
1 September 1984	Snowflake, US	daily rain	50.3 mm (2.0 in)	28.2 mm (1.1 in)	84 years	63 of 100 (Major)
1 September 1984	Groenvlei, ZA	daily rain	43.5 mm (1.7 in)	42.7 mm (1.7 in)	53 years	60 of 100 (Major)
1 September 1984	Tuxtla Gutierrez (Dge), MX	all-time rain	148.1 mm (5.8 in)	41.9 mm (1.6 in)	22 years	58 of 100 (Notable)
1 September 1984	Jian, CN	monthly rain	152.5 mm (6.0 in)	81.8 mm (3.2 in)	2 years	53 of 100 (Notable)
1 September 1984	Murray Town (Doughboy Creek), AU	monthly rain	58.0 mm (2.3 in)	5.2 mm (0.20 in)	76 years	48 of 100 (Notable)
1 September 1984	Nanchang, CN	monthly rain	134.4 mm (5.3 in)	43.5 mm (1.7 in)	24 years	46 of 100 (Notable)
1 September 1984	Chiang Rai, TH	daily rain	116.9 mm (4.6 in)	62.2 mm (2.4 in)	27 years	46 of 100 (Notable)
1 September 1984	Deer Valley, US	daily rain	34.3 mm (1.4 in)	32.3 mm (1.3 in)	21 years	45 of 100 (Notable)
1 September 1984	Green Bay, US	daily rain	39.9 mm (1.6 in)	6.4 mm (0.25 in)	96 years	44 of 100 (Notable)
1 September 1984	Martim Francisco, BR	daily rain	42.2 mm (1.7 in)	34.8 mm (1.4 in)	37 years	43 of 100 (Notable)
1 September 1984	Zuni, US	daily rain	50.0 mm (2.0 in)	46.4 mm (1.8 in)	2 years	43 of 100 (Notable)
1 September 1984	Tarcowie, AU	daily rain	32.0 mm (1.3 in)	17.8 mm (0.7 in)	11 years	41 of 100 (Notable)
1 September 1984	Ganzhou, CN	monthly rain	118.4 mm (4.7 in)	36.0 mm (1.4 in)	2 years	41 of 100 (Notable)
1 September 1984	Incheon, KR	all-time rain	268.0 mm (10.6 in)	40.0 mm (1.6 in)	7 years	40 of 100 (Notable)
1 September 1984	Oxford, GB	daily high min	16.4 C (61.5 F)	0.3 C (0.5 F)	158 years	40 of 100 (Notable)
1 September 1984	Redington, US	daily rain	41.9 mm (1.6 in)	34.3 mm (1.4 in)	4 years	40 of 100 (Notable)
1 September 1984	St Petersburg, US	monthly high min	27.8 C (82.0 F)	0.6 C (1.1 F)	58 years	40 of 100 (Notable)
1 September 1984	Saint Maries, US	daily low max	10.6 C (51.1 F)	5.5 C (9.9 F)	77 years	40 of 100 (Notable)
1 September 1984	La Junta, MX	monthly rain	67.3 mm (2.6 in)	10.4 mm (0.4 in)	34 years	39 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

1797 to 1984

Records set or tied on this calendar date in each year from 1797 to 1984. 1984 had 619 records.

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

Records on 09-01 in each year
Year	Records
1797	1
1806	1
1819	1
1827	1
1831	1
1838	1
1851	1
1853	1
1854	1
1857	1
1858	1
1859	1
1860	2
1861	1
1865	1
1866	1
1867	2
1869	3
1871	1
1873	1
1876	2
1877	2
1878	3
1879	2
1881	5
1883	1
1886	3
1887	3
1888	2
1890	2
1892	2
1894	3
1897	4
1898	10
1899	3
1900	2
1901	14
1902	5
1903	16
1904	9
1905	6
1906	26
1907	14
1908	26
1909	34
1910	22
1911	16
1912	47
1913	32
1914	23
1915	46
1916	16
1917	24
1918	31
1919	19
1920	31
1921	46
1922	67
1923	75
1924	210
1925	127
1926	182
1927	136
1928	166
1929	324
1930	264
1931	233
1932	550
1933	622
1934	654
1935	584
1936	385
1937	502
1938	373
1939	303
1940	333
1941	497
1942	532
1943	578
1944	377
1945	497
1946	642
1947	555
1948	460
1949	1,102
1950	849
1951	668
1952	644
1953	937
1954	407
1955	413
1956	504
1957	320
1958	427
1959	519
1960	408
1961	531
1962	368
1963	416
1964	621
1965	657
1966	596
1967	1,263
1968	604
1969	493
1970	502
1971	464
1972	518
1973	874
1974	895
1975	939
1976	627
1977	500
1978	809
1979	459
1980	671
1981	649
1982	642
1983	1,167
1984	619
1985	901
1986	964
1987	909
1988	651
1989	823
1990	749
1991	687
1992	1,010
1993	1,122
1994	1,291
1995	1,165
1996	823
1997	1,161
1998	1,159
1999	925
2000	1,613
2001	904
2002	778
2003	1,254
2004	827
2005	901
2006	1,157
2007	976
2008	1,204
2009	1,003
2010	1,313
2011	1,071
2012	874
2013	775
2014	515
2015	661
2016	522
2017	686
2018	399
2019	800
2020	689
2021	751
2022	1,016
2023	720
2024	938
2025	359
2026	521

Download the Data

Data for records on 1984-09-01: 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	423
20 to 40	13
40 to 60	8
60 to 80	1
80 to 100	1