Weather Records on 25 September 1986

1,766 weather records were set or tied worldwide on 25 September 1986. Highest significance: Brusett 3 E, US.

Key Facts for 25 September 1986

On 25 September 1986, 1,766 weather records were set or tied at long-record stations worldwide.
657 were record highs and 535 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 88 monthly and 1,671 daily.
Brusett 3 E set an all-time record daily precipitation of 112.8 mm (4.4 in) on 25 September 1986.
Across 163 earlier years (1825 to 2026) the same calendar date averaged 418 records.

Record Map

1,766 stations

1,766 station records on 25 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Brusett 3 E	United States	Record daily precipitation	112.8 mm (4.4 in)	73 of 100 (Major)
Harlem	United States	Record daily precipitation	146.3 mm (5.8 in)	71 of 100 (Major)
Forks 4 NNE	United States	Record daily precipitation	45.0 mm (1.8 in)	65 of 100 (Major)
Winifred	United States	Record daily precipitation	44.7 mm (1.8 in)	64 of 100 (Major)
Melstone	United States	Record daily precipitation	45.2 mm (1.8 in)	62 of 100 (Major)
Flatwillow 4 ENE	United States	Record daily precipitation	29.2 mm (1.1 in)	60 of 100 (Major)
Camp Pardee	United States	Record daily precipitation	61.2 mm (2.4 in)	57 of 100 (Notable)
Corinne	United States	Record daily precipitation	38.9 mm (1.5 in)	57 of 100 (Notable)
Bloomingdale	United States	Record daily precipitation	116.1 mm (4.6 in)	55 of 100 (Notable)
Prospect	United States	Record daily precipitation	58.4 mm (2.3 in)	55 of 100 (Notable)
Logan Utah St UNIV	United States	Record daily precipitation	42.2 mm (1.7 in)	55 of 100 (Notable)
U C L A	United States	Record daily precipitation	33.3 mm (1.3 in)	54 of 100 (Notable)
Biddle	United States	Record daily precipitation	71.1 mm (2.8 in)	54 of 100 (Notable)
Elm Springs 3 ESE	United States	Record daily precipitation	45.7 mm (1.8 in)	54 of 100 (Notable)
Marengo	United States	Record daily precipitation	84.8 mm (3.3 in)	53 of 100 (Notable)
Belltower	United States	Record daily precipitation	63.0 mm (2.5 in)	53 of 100 (Notable)
Deer Creek Dam	United States	Record daily precipitation	33.3 mm (1.3 in)	53 of 100 (Notable)
Hysham	United States	Record daily precipitation	57.2 mm (2.3 in)	52 of 100 (Notable)
La Rue	United States	Record daily precipitation	73.7 mm (2.9 in)	52 of 100 (Notable)
Portland Intl AP	United States	Record daily precipitation	37.6 mm (1.5 in)	52 of 100 (Notable)
Silverton	United States	Record daily snowfall	17.8 cm (7.0 in)	51 of 100 (Notable)
Goldbutte 7 N	United States	Record daily precipitation	38.6 mm (1.5 in)	50 of 100 (Notable)
Wolf Pt	United States	Record daily precipitation	34.0 mm (1.3 in)	50 of 100 (Notable)
Centerburg 2 SE	United States	Record daily precipitation	70.1 mm (2.8 in)	50 of 100 (Notable)
Delaware Lake	United States	Record daily precipitation	67.1 mm (2.6 in)	50 of 100 (Notable)
Mohawk Dam	United States	Record daily precipitation	75.2 mm (3.0 in)	50 of 100 (Notable)
Keams Canyon	United States	Record low maximum temperature	10.0 C (50.0 F)	49 of 100 (Notable)
Yosemite Park HQ	United States	Record daily precipitation	37.8 mm (1.5 in)	49 of 100 (Notable)
Galesburg	United States	Record daily precipitation	55.9 mm (2.2 in)	49 of 100 (Notable)
Maquoketa	United States	Record daily precipitation	81.3 mm (3.2 in)	49 of 100 (Notable)
Wishek	United States	Record daily precipitation	27.9 mm (1.1 in)	49 of 100 (Notable)
Delaware	United States	Record daily precipitation	50.5 mm (2.0 in)	49 of 100 (Notable)
Lake Arrowhead	United States	Record daily precipitation	85.3 mm (3.4 in)	48 of 100 (Notable)
Utica	United States	Record daily precipitation	90.2 mm (3.6 in)	48 of 100 (Notable)
Powers	United States	Record daily precipitation	33.0 mm (1.3 in)	48 of 100 (Notable)
Aneth Plt	United States	Record low maximum temperature	12.8 C (55.0 F)	48 of 100 (Notable)
Birney	United States	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Ekalaka	United States	Record daily precipitation	36.1 mm (1.4 in)	47 of 100 (Notable)
Glendive	United States	Record daily precipitation	52.6 mm (2.1 in)	47 of 100 (Notable)
Clendening Lake	United States	Record daily precipitation	57.2 mm (2.3 in)	47 of 100 (Notable)
Cooperdale	United States	Record daily precipitation	82.3 mm (3.2 in)	47 of 100 (Notable)
Derry 4 SW	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Red Owl	United States	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Alva 5 ESE	United States	Record daily precipitation	55.9 mm (2.2 in)	47 of 100 (Notable)
Freeport Wwtp	United States	Record daily precipitation	104.1 mm (4.1 in)	46 of 100 (Notable)
Cadiz	United States	Record daily precipitation	53.3 mm (2.1 in)	46 of 100 (Notable)
Coshocton Wpc Plt	United States	Record daily precipitation	66.3 mm (2.6 in)	46 of 100 (Notable)
Castle Hot Springs	United States	Record low maximum temperature	21.1 C (70.0 F)	45 of 100 (Notable)
San Dimas Fire Fc 95	United States	Record daily precipitation	48.5 mm (1.9 in)	45 of 100 (Notable)
San Gabriel Dam Fc425B-E	United States	Record daily precipitation	98.6 mm (3.9 in)	45 of 100 (Notable)
Dodson 1 WNW	United States	Record daily precipitation	80.8 mm (3.2 in)	45 of 100 (Notable)
Roy 8 NE	United States	Record daily precipitation	42.4 mm (1.7 in)	45 of 100 (Notable)
Jamestown State Hosp	United States	Record daily precipitation	32.3 mm (1.3 in)	45 of 100 (Notable)
Riverdale	United States	Record daily precipitation	46.0 mm (1.8 in)	45 of 100 (Notable)
Big Falls Hydro	United States	Record daily precipitation	161.5 mm (6.4 in)	45 of 100 (Notable)
Lindsay	United States	Record daily precipitation	83.8 mm (3.3 in)	44 of 100 (Notable)
Haskins Dam	United States	Record daily precipitation	32.8 mm (1.3 in)	44 of 100 (Notable)
Prospect 2 SW	United States	Record daily precipitation	31.8 mm (1.3 in)	44 of 100 (Notable)
S Haven	United States	Record daily precipitation	127.5 mm (5.0 in)	43 of 100 (Notable)
Rocky Boy	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)

Counts by Type and Timescale

1,766 records

Records set or tied on 25 September 1986 by type: Highest daily maximum 210, Lowest daily maximum 418, Highest daily minimum 447, Lowest daily minimum 117, Heaviest daily rainfall 535, Heaviest daily snowfall 20, Deepest snow cover 19.

Records on 25 September 1986 by type
Record type	Records
Highest daily maximum	210
Lowest daily maximum	418
Highest daily minimum	447
Lowest daily minimum	117
Heaviest daily rainfall	535
Heaviest daily snowfall	20
Deepest snow cover	19

Records on 25 September 1986 by timescale: all-time 7, monthly 88, daily 1,671.

How Much Records Were Beaten By

1,429 broken records

Margins by which the 1,429 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

25 September 1986

Top 20 records on 25 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 September 1986	Brusett 3 E, US	all-time rain	112.8 mm (4.4 in)	45.5 mm (1.8 in)	22 years	73 of 100 (Major)
25 September 1986	Harlem, US	all-time rain	146.3 mm (5.8 in)	50.8 mm (2.0 in)	8 years	71 of 100 (Major)
25 September 1986	Forks 4 NNE, US	daily rain	45.0 mm (1.8 in)	29.5 mm (1.2 in)	61 years	65 of 100 (Major)
25 September 1986	Winifred, US	daily rain	44.7 mm (1.8 in)	30.7 mm (1.2 in)	61 years	64 of 100 (Major)
25 September 1986	Melstone, US	daily rain	45.2 mm (1.8 in)	28.2 mm (1.1 in)	76 years	62 of 100 (Major)
25 September 1986	Flatwillow 4 ENE, US	daily rain	29.2 mm (1.1 in)	25.4 mm (1.0 in)	44 years	60 of 100 (Major)
25 September 1986	Camp Pardee, US	monthly rain	61.2 mm (2.4 in)	25.1 mm (1.0 in)	27 years	57 of 100 (Notable)
25 September 1986	Corinne, US	daily rain	38.9 mm (1.5 in)	22.6 mm (0.9 in)	80 years	57 of 100 (Notable)
25 September 1986	Bloomingdale, US	daily rain	116.1 mm (4.6 in)	71.9 mm (2.8 in)	24 years	55 of 100 (Notable)
25 September 1986	Prospect, US	daily rain	58.4 mm (2.3 in)	35.0 mm (1.4 in)	56 years	55 of 100 (Notable)
25 September 1986	Logan Utah St UNIV, US	daily rain	42.2 mm (1.7 in)	24.9 mm (1.0 in)	52 years	55 of 100 (Notable)
25 September 1986	U C L A, US	daily rain	33.3 mm (1.3 in)	30.0 mm (1.2 in)	47 years	54 of 100 (Notable)
25 September 1986	Biddle, US	daily rain	71.1 mm (2.8 in)	45.7 mm (1.8 in)	27 years	54 of 100 (Notable)
25 September 1986	Elm Springs 3 ESE, US	daily rain	45.7 mm (1.8 in)	37.8 mm (1.5 in)	27 years	54 of 100 (Notable)
25 September 1986	Marengo, US	daily rain	84.8 mm (3.3 in)	43.7 mm (1.7 in)	56 years	53 of 100 (Notable)
25 September 1986	Belltower, US	monthly rain	63.0 mm (2.5 in)	30.5 mm (1.2 in)	0 years	53 of 100 (Notable)
25 September 1986	Deer Creek Dam, US	daily rain	33.3 mm (1.3 in)	25.4 mm (1.0 in)	31 years	53 of 100 (Notable)
25 September 1986	Hysham, US	daily rain	57.2 mm (2.3 in)	52.6 mm (2.1 in)	28 years	52 of 100 (Notable)
25 September 1986	La Rue, US	daily rain	73.7 mm (2.9 in)	33.1 mm (1.3 in)	56 years	52 of 100 (Notable)
25 September 1986	Portland Intl AP, US	daily rain	37.6 mm (1.5 in)	26.7 mm (1.1 in)	36 years	52 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

1825 to 1986

Records set or tied on this calendar date in each year from 1825 to 1986. 1986 had 1,766 records.

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

Records on 09-25 in each year
Year	Records
1825	1
1834	1
1836	1
1842	1
1843	1
1847	1
1851	1
1852	1
1855	1
1857	2
1859	1
1860	1
1863	1
1865	1
1866	2
1867	2
1868	1
1871	2
1872	1
1874	1
1875	1
1877	3
1879	2
1881	3
1884	3
1885	6
1886	1
1887	3
1889	7
1891	3
1893	7
1894	3
1895	5
1896	5
1897	2
1898	1
1899	2
1900	7
1901	6
1902	11
1903	4
1904	10
1905	16
1906	7
1907	35
1908	20
1909	22
1910	5
1911	9
1912	63
1913	13
1914	15
1915	43
1916	139
1917	138
1918	16
1919	20
1920	75
1921	32
1922	47
1923	68
1924	157
1925	141
1926	740
1927	166
1928	480
1929	158
1930	489
1931	500
1932	260
1933	542
1934	394
1935	258
1936	274
1937	190
1938	335
1939	454
1940	517
1941	269
1942	970
1943	488
1944	246
1945	514
1946	292
1947	666
1948	501
1949	479
1950	1,163
1951	639
1952	515
1953	242
1954	292
1955	546
1956	503
1957	231
1958	454
1959	396
1960	694
1961	530
1962	305
1963	602
1964	403
1965	690
1966	334
1967	428
1968	300
1969	196
1970	783
1971	323
1972	706
1973	650
1974	995
1975	1,166
1976	541
1977	875
1978	462
1979	719
1980	687
1981	669
1982	759
1983	647
1984	1,305
1985	446
1986	1,766
1987	560
1988	571
1989	1,367
1990	875
1991	1,243
1992	1,346
1993	1,015
1994	666
1995	1,013
1996	648
1997	1,278
1998	1,346
1999	804
2000	1,536
2001	1,536
2002	876
2003	758
2004	519
2005	1,484
2006	767
2007	1,284
2008	766
2009	854
2010	1,125
2011	763
2012	505
2013	615
2014	800
2015	868
2016	781
2017	1,253
2018	648
2019	530
2020	1,089
2021	355
2022	301
2023	580
2024	1,120
2025	569
2026	473

Download the Data

Data for records on 1986-09-25: 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	1,403
50 to 100	19
100 to 150	5
150 to 200	1
200 to 250	1