Weather Records on 27 September 1986

1,772 weather records were set or tied worldwide on 27 September 1986. Highest significance: Naalehu 14, US.

Key Facts for 27 September 1986

On 27 September 1986, 1,772 weather records were set or tied at long-record stations worldwide.
814 were record highs and 585 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 94 monthly and 1,677 daily.
Naalehu 14 set a daily record precipitation of 118.1 mm (4.6 in) on 27 September 1986.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 442 records.

Record Map

1,772 stations

1,772 station records on 27 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Naalehu 14	United States	Record daily precipitation	118.1 mm (4.6 in)	71 of 100 (Major)
Doyle	United States	Record daily snowfall	12.7 cm (5.0 in)	59 of 100 (Notable)
Hanover (Pol)	South Africa	Record daily precipitation	25.0 mm (1.0 in)	55 of 100 (Notable)
Dillingham FAA AP	United States	Record daily precipitation	38.1 mm (1.5 in)	54 of 100 (Notable)
Susanville 2SW	United States	Record daily snowfall	5.1 cm (2.0 in)	53 of 100 (Notable)
Rockwell City	United States	Record daily precipitation	66.0 mm (2.6 in)	53 of 100 (Notable)
Wheaton 3 SE	United States	Record daily precipitation	73.2 mm (2.9 in)	52 of 100 (Notable)
Cottonwood Falls	United States	Record daily precipitation	141.0 mm (5.6 in)	51 of 100 (Notable)
Vanersborg	Sweden	Record low minimum temperature	-4.0 C (24.8 F)	50 of 100 (Notable)
Lowman	United States	Record daily snowfall	5.1 cm (2.0 in)	49 of 100 (Notable)
Stanley Wwtp	United States	Record daily precipitation	67.6 mm (2.7 in)	48 of 100 (Notable)
Bowman Dam	United States	Record low maximum temperature	2.2 C (36.0 F)	47 of 100 (Notable)
Nevada City	United States	Record low maximum temperature	8.3 C (46.9 F)	47 of 100 (Notable)
Gosh,Agro	Russia	Record daily precipitation	29.8 mm (1.2 in)	46 of 100 (Notable)
Little Valley	United States	Record daily precipitation	81.0 mm (3.2 in)	46 of 100 (Notable)
New Forest	Australia	Record daily precipitation	26.0 mm (1.0 in)	45 of 100 (Notable)
Tahoe City	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Truckee Rs	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Silver Lake Brighton	United States	Record snow depth	40.6 cm (16.0 in)	45 of 100 (Notable)
Spirit Falls	United States	Record daily precipitation	85.6 mm (3.4 in)	45 of 100 (Notable)
Antioch	United States	Record daily precipitation	47.8 mm (1.9 in)	44 of 100 (Notable)
Stilwell	United States	Record daily precipitation	111.0 mm (4.4 in)	44 of 100 (Notable)
Zion Np	United States	Record low maximum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Chilton	United States	Record high minimum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Ft Dodge 5NNW	United States	Record daily precipitation	57.2 mm (2.3 in)	43 of 100 (Notable)
De Kalk	South Africa	Record daily precipitation	29.5 mm (1.2 in)	42 of 100 (Notable)
Skjomen	Norway	Record snow depth	19.0 cm (7.5 in)	41 of 100 (Notable)
Bloomingdale	United States	Record daily precipitation	65.8 mm (2.6 in)	41 of 100 (Notable)
Prentice #2	United States	Record daily precipitation	53.3 mm (2.1 in)	41 of 100 (Notable)
Dwtn Charleston	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Karlshamn	Sweden	Record low minimum temperature	-1.5 C (29.3 F)	40 of 100 (Notable)
Hatteras	United States	Record high minimum temperature	24.4 C (75.9 F)	40 of 100 (Notable)
Waukegan	United States	Record daily precipitation	53.3 mm (2.1 in)	39 of 100 (Notable)
Frederick Police Brks	United States	Record high minimum temperature	22.8 C (73.0 F)	39 of 100 (Notable)
Grand Meadow	United States	Record high maximum temperature	31.1 C (88.0 F)	39 of 100 (Notable)
Willow Sprg Radio Kuku	United States	Record high minimum temperature	22.8 C (73.0 F)	39 of 100 (Notable)
Sherman	United States	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Centennial 1NE	United States	Record daily snowfall	7.6 cm (3.0 in)	39 of 100 (Notable)
Santiago Chivela	Mexico	Record daily precipitation	103.9 mm (4.1 in)	38 of 100 (Notable)
Ankenes	Norway	Record snow depth	28.0 cm (11.0 in)	38 of 100 (Notable)
Bethesdaweg (Sar)	South Africa	Record daily precipitation	29.0 mm (1.1 in)	38 of 100 (Notable)
Newark Ag Farm	United States	Record high maximum temperature	31.7 C (89.1 F)	38 of 100 (Notable)
Geyser Rch	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Corvallis State UNIV	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Oshkosh	United States	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Haparanda	Sweden	Record low maximum temperature	3.2 C (37.8 F)	37 of 100 (Notable)
Santa Paula	United States	Record low maximum temperature	21.1 C (70.0 F)	37 of 100 (Notable)
Douglas	United States	Record high maximum temperature	36.1 C (97.0 F)	37 of 100 (Notable)
American Falls 6 NE	United States	Record low maximum temperature	8.9 C (48.0 F)	37 of 100 (Notable)
Marengo	United States	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Pacific	United States	Record daily precipitation	67.6 mm (2.7 in)	37 of 100 (Notable)
Bolivar	United States	Record daily precipitation	52.8 mm (2.1 in)	37 of 100 (Notable)
Kinston 7 SE	United States	Record high maximum temperature	35.0 C (95.0 F)	37 of 100 (Notable)
Aiken 5SE	United States	Record high maximum temperature	37.2 C (99.0 F)	37 of 100 (Notable)
Koosharem	United States	Record low maximum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Antigo	United States	Record high minimum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Imuris (Smn)	Mexico	Record low minimum temperature	2.8 C (37.0 F)	36 of 100 (Notable)
Bodie California St Historic P	United States	Record low maximum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
1 N McLeansboro	United States	Record high minimum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Auburn 2 SSE	United States	Record high minimum temperature	17.2 C (63.0 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,772 records

Records set or tied on 27 September 1986 by type: Highest daily maximum 311, Lowest daily maximum 383, Highest daily minimum 503, Lowest daily minimum 202, Heaviest daily rainfall 337, Heaviest daily snowfall 18, Deepest snow cover 18.

Records on 27 September 1986 by type
Record type	Records
Highest daily maximum	311
Lowest daily maximum	383
Highest daily minimum	503
Lowest daily minimum	202
Heaviest daily rainfall	337
Heaviest daily snowfall	18
Deepest snow cover	18

Records on 27 September 1986 by timescale: all-time 1, monthly 94, daily 1,677.

How Much Records Were Beaten By

1,353 broken records

Margins by which the 1,353 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

27 September 1986

Top 20 records on 27 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1986	Naalehu 14, US	daily rain	118.1 mm (4.6 in)	81.8 mm (3.2 in)	79 years	71 of 100 (Major)
27 September 1986	Doyle, US	monthly snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	63 years	59 of 100 (Notable)
27 September 1986	Hanover (Pol), ZA	daily rain	25.0 mm (1.0 in)	19.9 mm (0.8 in)	68 years	55 of 100 (Notable)
27 September 1986	Dillingham FAA AP, US	daily rain	38.1 mm (1.5 in)	18.0 mm (0.7 in)	67 years	54 of 100 (Notable)
27 September 1986	Susanville 2SW, US	monthly snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	82 years	53 of 100 (Notable)
27 September 1986	Rockwell City, US	daily rain	66.0 mm (2.6 in)	29.2 mm (1.1 in)	84 years	53 of 100 (Notable)
27 September 1986	Wheaton 3 SE, US	daily rain	73.2 mm (2.9 in)	38.7 mm (1.5 in)	49 years	52 of 100 (Notable)
27 September 1986	Cottonwood Falls, US	daily rain	141.0 mm (5.6 in)	88.4 mm (3.5 in)	12 years	51 of 100 (Notable)
27 September 1986	Vanersborg, SE	monthly low min	-4.0 C (24.8 F)	1.0 C (1.8 F)	92 years	50 of 100 (Notable)
27 September 1986	Lowman, US	monthly snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	76 years	49 of 100 (Notable)
27 September 1986	Stanley Wwtp, US	daily rain	67.6 mm (2.7 in)	28.0 mm (1.1 in)	61 years	48 of 100 (Notable)
27 September 1986	Bowman Dam, US	daily low max	2.2 C (36.0 F)	7.8 C (14.0 F)	80 years	47 of 100 (Notable)
27 September 1986	Nevada City, US	monthly low max	8.3 C (46.9 F)	0.6 C (1.1 F)	91 years	47 of 100 (Notable)
27 September 1986	Gosh,Agro, RU	daily rain	29.8 mm (1.2 in)	21.9 mm (0.9 in)	36 years	46 of 100 (Notable)
27 September 1986	Little Valley, US	daily rain	81.0 mm (3.2 in)	56.1 mm (2.2 in)	9 years	46 of 100 (Notable)
27 September 1986	New Forest, AU	daily rain	26.0 mm (1.0 in)	19.4 mm (0.8 in)	21 years	45 of 100 (Notable)
27 September 1986	Tahoe City, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	76 years	45 of 100 (Notable)
27 September 1986	Truckee Rs, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	73 years	45 of 100 (Notable)
27 September 1986	Silver Lake Brighton, US	daily snow depth	40.6 cm (16.0 in)	25.4 cm (10.0 in)	27 years	45 of 100 (Notable)
27 September 1986	Spirit Falls, US	daily rain	85.6 mm (3.4 in)	44.2 mm (1.7 in)	27 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

1799 to 1986

Records set or tied on this calendar date in each year from 1799 to 1986. 1986 had 1,772 records.

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

Records on 09-27 in each year
Year	Records
1799	1
1828	1
1836	2
1847	1
1851	1
1854	2
1855	2
1859	2
1866	2
1867	3
1874	1
1875	1
1877	2
1880	1
1881	4
1882	1
1885	5
1887	1
1890	3
1891	1
1892	1
1893	1
1894	5
1895	6
1896	1
1897	2
1898	4
1899	1
1900	5
1901	3
1902	12
1903	7
1904	12
1905	21
1906	21
1907	9
1908	36
1909	17
1910	20
1911	31
1912	25
1913	27
1914	24
1915	80
1916	57
1917	41
1918	58
1919	45
1920	54
1921	26
1922	111
1923	125
1924	115
1925	129
1926	581
1927	244
1928	288
1929	225
1930	178
1931	222
1932	194
1933	559
1934	298
1935	319
1936	435
1937	309
1938	366
1939	572
1940	706
1941	257
1942	1,353
1943	503
1944	323
1945	475
1946	387
1947	813
1948	405
1949	407
1950	223
1951	480
1952	539
1953	567
1954	507
1955	386
1956	825
1957	644
1958	585
1959	582
1960	337
1961	376
1962	352
1963	849
1964	724
1965	688
1966	426
1967	502
1968	286
1969	233
1970	773
1971	762
1972	989
1973	1,031
1974	408
1975	790
1976	905
1977	852
1978	773
1979	741
1980	559
1981	680
1982	1,076
1983	791
1984	1,297
1985	661
1986	1,772
1987	1,013
1988	494
1989	852
1990	379
1991	894
1992	659
1993	727
1994	764
1995	698
1996	1,468
1997	730
1998	1,774
1999	1,059
2000	1,031
2001	980
2002	992
2003	830
2004	665
2005	1,061
2006	596
2007	1,091
2008	659
2009	987
2010	1,153
2011	965
2012	624
2013	823
2014	813
2015	664
2016	600
2017	891
2018	600
2019	755
2020	659
2021	893
2022	642
2023	747
2024	1,449
2025	272
2026	358

Download the Data

Data for records on 1986-09-27: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 50	1,334
50 to 100	16
100 to 150	1
150 to 200	1
200 to 250	0
250 to 300	1