Weather Records on 4 September 1986

663 weather records were set or tied worldwide on 4 September 1986. Highest significance: Lebanon, US.

Key Facts for 4 September 1986

On 4 September 1986, 663 weather records were set or tied at long-record stations worldwide.
170 were record highs and 323 were record lows, counting maximum and minimum temperature.
By timescale, 8 were all-time records, 22 monthly and 633 daily.
Lebanon set a daily record precipitation of 146.1 mm (5.8 in) on 4 September 1986.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 450 records.

Record Map

663 stations

663 station records on 4 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lebanon	United States	Record daily precipitation	146.1 mm (5.8 in)	71 of 100 (Major)
Siliguri	India	Record daily precipitation	173.0 mm (6.8 in)	67 of 100 (Major)
Fairmount	United States	Record daily precipitation	76.2 mm (3.0 in)	57 of 100 (Notable)
Jackson	United States	Record daily precipitation	67.3 mm (2.6 in)	57 of 100 (Notable)
Murfreesboro 5 N	United States	Record daily precipitation	206.5 mm (8.1 in)	57 of 100 (Notable)
Gail	United States	Record daily precipitation	82.6 mm (3.3 in)	56 of 100 (Notable)
Macon Middle Ga Rgnl AP	United States	Record daily precipitation	98.0 mm (3.9 in)	52 of 100 (Notable)
Midland Odessa	United States	Record daily precipitation	83.6 mm (3.3 in)	51 of 100 (Notable)
Grandfalls 3SSE	United States	Record daily precipitation	149.1 mm (5.9 in)	50 of 100 (Notable)
Topo Chico	Mexico	Record daily precipitation	179.8 mm (7.1 in)	48 of 100 (Notable)
Dunbar Forest Exp STN	United States	Record daily precipitation	57.7 mm (2.3 in)	48 of 100 (Notable)
Statesville	United States	Record daily precipitation	133.4 mm (5.3 in)	48 of 100 (Notable)
Crowell	United States	Record daily precipitation	79.2 mm (3.1 in)	48 of 100 (Notable)
Russell	United States	Record daily precipitation	81.0 mm (3.2 in)	46 of 100 (Notable)
Ft Stockton	United States	Record daily precipitation	57.2 mm (2.3 in)	46 of 100 (Notable)
Horatio	United States	Record daily precipitation	114.3 mm (4.5 in)	45 of 100 (Notable)
Penwell	United States	Record daily precipitation	92.2 mm (3.6 in)	45 of 100 (Notable)
Abashiri	Japan	Record daily precipitation	73.5 mm (2.9 in)	44 of 100 (Notable)
Maple Plain	United States	Record daily precipitation	55.9 mm (2.2 in)	44 of 100 (Notable)
Boquillas Rs	United States	Record daily precipitation	35.1 mm (1.4 in)	44 of 100 (Notable)
Geisenheim	Germany	Record low maximum temperature	15.1 C (59.2 F)	43 of 100 (Notable)
Tullahoma	United States	Record daily precipitation	94.0 mm (3.7 in)	40 of 100 (Notable)
Storrs	United States	Record low maximum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Lenorah	United States	Record daily precipitation	139.2 mm (5.5 in)	39 of 100 (Notable)
Marathon	United States	Record daily precipitation	27.4 mm (1.1 in)	39 of 100 (Notable)
Robe Comparison	Australia	Record high minimum temperature	13.3 C (55.9 F)	38 of 100 (Notable)
Ball Ground	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Thomasville 7 NE	United States	Record high minimum temperature	26.1 C (79.0 F)	38 of 100 (Notable)
Ackerly 4SE	United States	Record daily precipitation	68.1 mm (2.7 in)	38 of 100 (Notable)
Alpine	United States	Record daily precipitation	53.1 mm (2.1 in)	38 of 100 (Notable)
Lincang	China	Record daily precipitation	60.6 mm (2.4 in)	37 of 100 (Notable)
Kushiro	Japan	Record daily precipitation	169.5 mm (6.7 in)	37 of 100 (Notable)
Huajintlan	Mexico	Record low maximum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Ohotsk	Russia	Record high maximum temperature	24.8 C (76.6 F)	37 of 100 (Notable)
Independence	United States	Record high minimum temperature	21.1 C (70.0 F)	37 of 100 (Notable)
Bedford	United States	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
Nicosia	Cyprus	Record low maximum temperature	31.5 C (88.7 F)	36 of 100 (Notable)
Los Gatos	United States	Record low minimum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
Port Inland	United States	Record daily precipitation	40.6 mm (1.6 in)	36 of 100 (Notable)
Lamesa 1 SSE	United States	Record daily precipitation	47.5 mm (1.9 in)	36 of 100 (Notable)
Northfield	United States	Record daily precipitation	57.2 mm (2.3 in)	36 of 100 (Notable)
Malvern	United Kingdom	Record low minimum temperature	3.9 C (39.0 F)	34 of 100 (Routine)
Gaylord	United States	Record daily precipitation	56.1 mm (2.2 in)	34 of 100 (Routine)
Chattanooga AP	United States	Record daily precipitation	75.9 mm (3.0 in)	34 of 100 (Routine)
Siwa	Egypt	Record high minimum temperature	24.0 C (75.2 F)	33 of 100 (Routine)
Lowestoft	United Kingdom	Record low minimum temperature	5.3 C (41.5 F)	33 of 100 (Routine)
Eastbourne	United Kingdom	Record low minimum temperature	6.2 C (43.2 F)	33 of 100 (Routine)
Tartu-Toravere	Estonia	Record low maximum temperature	10.1 C (50.2 F)	32 of 100 (Routine)
Nurnberg	Germany	Record low maximum temperature	13.6 C (56.5 F)	32 of 100 (Routine)
Salvatierra	Mexico	Record low maximum temperature	20.0 C (68.0 F)	32 of 100 (Routine)
Santa Catarina	Mexico	Record daily precipitation	84.3 mm (3.3 in)	32 of 100 (Routine)
Onaway 4N	United States	Record daily precipitation	42.7 mm (1.7 in)	32 of 100 (Routine)
Lexington	United States	Record low maximum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Westerville	United States	Record daily precipitation	52.8 mm (2.1 in)	32 of 100 (Routine)
Sparta Wwtp	United States	Record daily precipitation	58.4 mm (2.3 in)	32 of 100 (Routine)
Odessa	United States	Record daily precipitation	115.6 mm (4.6 in)	32 of 100 (Routine)
Vernon	United States	Record daily precipitation	74.2 mm (2.9 in)	32 of 100 (Routine)
Mecca Fire STN	United States	Record low minimum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Jasper 1 NNW	United States	Record daily precipitation	33.5 mm (1.3 in)	31 of 100 (Routine)
Bethpage 1 S	United States	Record daily precipitation	59.7 mm (2.4 in)	30 of 100 (Routine)

Counts by Type and Timescale

663 records

Records set or tied on 4 September 1986 by type: Highest daily maximum 70, Lowest daily maximum 232, Highest daily minimum 100, Lowest daily minimum 91, Heaviest daily rainfall 169, Heaviest daily snowfall 1.

Records on 4 September 1986 by type
Record type	Records
Highest daily maximum	70
Lowest daily maximum	232
Highest daily minimum	100
Lowest daily minimum	91
Heaviest daily rainfall	169
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 4 September 1986 by timescale: all-time 8, monthly 22, daily 633.

How Much Records Were Beaten By

528 broken records

Margins by which the 528 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 109.5. Ties are not counted.

Top 20 by Significance

4 September 1986

Top 20 records on 4 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 September 1986	Lebanon, US	daily rain	146.1 mm (5.8 in)	105.5 mm (4.2 in)	76 years	71 of 100 (Major)
4 September 1986	Siliguri, IN	daily rain	173.0 mm (6.8 in)	109.5 mm (4.3 in)	84 years	67 of 100 (Major)
4 September 1986	Fairmount, US	daily rain	76.2 mm (3.0 in)	57.4 mm (2.3 in)	48 years	57 of 100 (Notable)
4 September 1986	Jackson, US	daily rain	67.3 mm (2.6 in)	34.8 mm (1.4 in)	90 years	57 of 100 (Notable)
4 September 1986	Murfreesboro 5 N, US	all-time rain	206.5 mm (8.1 in)	43.7 mm (1.7 in)	11 years	57 of 100 (Notable)
4 September 1986	Gail, US	daily rain	82.6 mm (3.3 in)	63.8 mm (2.5 in)	43 years	56 of 100 (Notable)
4 September 1986	Macon Middle Ga Rgnl AP, US	daily rain	98.0 mm (3.9 in)	74.9 mm (2.9 in)	32 years	52 of 100 (Notable)
4 September 1986	Midland Odessa, US	daily rain	83.6 mm (3.3 in)	51.1 mm (2.0 in)	24 years	51 of 100 (Notable)
4 September 1986	Grandfalls 3SSE, US	all-time rain	149.1 mm (5.9 in)	14.0 mm (0.6 in)	48 years	50 of 100 (Notable)
4 September 1986	Topo Chico, MX	all-time rain	179.8 mm (7.1 in)	45.9 mm (1.8 in)	13 years	48 of 100 (Notable)
4 September 1986	Dunbar Forest Exp STN, US	daily rain	57.7 mm (2.3 in)	37.9 mm (1.5 in)	24 years	48 of 100 (Notable)
4 September 1986	Statesville, US	daily rain	133.4 mm (5.3 in)	100.4 mm (4.0 in)	16 years	48 of 100 (Notable)
4 September 1986	Crowell, US	daily rain	79.2 mm (3.1 in)	48.7 mm (1.9 in)	65 years	48 of 100 (Notable)
4 September 1986	Russell, US	daily rain	81.0 mm (3.2 in)	44.9 mm (1.8 in)	48 years	46 of 100 (Notable)
4 September 1986	Ft Stockton, US	daily rain	57.2 mm (2.3 in)	35.9 mm (1.4 in)	44 years	46 of 100 (Notable)
4 September 1986	Horatio, US	daily rain	114.3 mm (4.5 in)	68.6 mm (2.7 in)	32 years	45 of 100 (Notable)
4 September 1986	Penwell, US	daily rain	92.2 mm (3.6 in)	71.9 mm (2.8 in)	7 years	45 of 100 (Notable)
4 September 1986	Abashiri, JP	daily rain	73.5 mm (2.9 in)	46.5 mm (1.8 in)	4 years	44 of 100 (Notable)
4 September 1986	Maple Plain, US	daily rain	55.9 mm (2.2 in)	11.2 mm (0.4 in)	88 years	44 of 100 (Notable)
4 September 1986	Boquillas Rs, US	daily rain	35.1 mm (1.4 in)	25.7 mm (1.0 in)	24 years	44 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 1986

Records set or tied on this calendar date in each year from 1802 to 1986. 1986 had 663 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 1986-09-04: 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	480
20 to 40	28
40 to 60	13
60 to 80	4
80 to 100	0
100 to 120	3