Weather Records on 9 May 1986

1,253 weather records were set or tied worldwide on 9 May 1986. Highest significance: Aunet, NO.

Key Facts for 9 May 1986

On 9 May 1986, 1,253 weather records were set or tied at long-record stations worldwide.
259 were record highs and 254 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 30 monthly and 1,219 daily.
Aunet set a daily record precipitation of 28.9 mm (1.1 in) on 9 May 1986.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 427 records.

Record Map

1,253 stations

1,253 station records on 9 May 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Aunet	Norway	Record daily precipitation	28.9 mm (1.1 in)	70 of 100 (Major)
Bangkok Metropolis	Thailand	Record daily precipitation	248.9 mm (9.8 in)	65 of 100 (Major)
Prachuap Khiri Khan	Thailand	Record daily precipitation	197.1 mm (7.8 in)	63 of 100 (Major)
Lien I Selbu	Norway	Record daily precipitation	29.2 mm (1.1 in)	62 of 100 (Major)
Hua Hin	Thailand	Record daily precipitation	225.0 mm (8.9 in)	62 of 100 (Major)
Elwood 8 S	United States	Record daily precipitation	89.4 mm (3.5 in)	62 of 100 (Major)
Wishek	United States	Record daily precipitation	38.1 mm (1.5 in)	62 of 100 (Major)
Snake Creek Powerhouse	United States	Record daily precipitation	28.4 mm (1.1 in)	60 of 100 (Major)
Elgin	United States	Record daily precipitation	95.8 mm (3.8 in)	58 of 100 (Notable)
Melstone	United States	Record daily snowfall	15.2 cm (6.0 in)	58 of 100 (Notable)
Brusett 3 E	United States	Record daily snowfall	25.4 cm (10.0 in)	57 of 100 (Notable)
Halsey 2 W	United States	Record daily precipitation	55.4 mm (2.2 in)	57 of 100 (Notable)
Fredericksburg	United States	Record daily precipitation	97.8 mm (3.9 in)	55 of 100 (Notable)
Itaiquara	Brazil	Record daily precipitation	60.9 mm (2.4 in)	52 of 100 (Notable)
Vaernes	Norway	Record daily precipitation	27.5 mm (1.1 in)	52 of 100 (Notable)
Phuket	Thailand	Record daily precipitation	127.0 mm (5.0 in)	52 of 100 (Notable)
Eustis 2 NW	United States	Record daily precipitation	62.5 mm (2.5 in)	52 of 100 (Notable)
Derrinallum (Craigmore)	Australia	Record daily precipitation	28.0 mm (1.1 in)	51 of 100 (Notable)
Upton	United States	Record daily precipitation	33.0 mm (1.3 in)	51 of 100 (Notable)
Bulayevo	Kazakhstan	Record daily precipitation	30.9 mm (1.2 in)	50 of 100 (Notable)
Loup City	United States	Record daily precipitation	39.4 mm (1.6 in)	50 of 100 (Notable)
Rising Star 1S	United States	Record daily precipitation	86.4 mm (3.4 in)	50 of 100 (Notable)
Usina Batista	Brazil	Record daily precipitation	74.1 mm (2.9 in)	49 of 100 (Notable)
Odesskoe	Russia	Record daily precipitation	29.9 mm (1.2 in)	49 of 100 (Notable)
Sattahip	Thailand	Record daily precipitation	124.0 mm (4.9 in)	49 of 100 (Notable)
Elsberry 1 S	United States	Record daily precipitation	72.4 mm (2.9 in)	49 of 100 (Notable)
Igarapava	Brazil	Record daily precipitation	167.4 mm (6.6 in)	48 of 100 (Notable)
Gympie	Australia	Record daily precipitation	52.0 mm (2.0 in)	47 of 100 (Notable)
Long Prairie	United States	Record daily precipitation	44.2 mm (1.7 in)	47 of 100 (Notable)
Eureka	United States	Record daily precipitation	52.3 mm (2.1 in)	47 of 100 (Notable)
Mellette 4 W	United States	Record daily precipitation	92.2 mm (3.6 in)	47 of 100 (Notable)
Bethel AP	United States	Record daily snowfall	7.1 cm (2.8 in)	47 of 100 (Notable)
Overbrook 5 SE	United States	Record daily precipitation	61.5 mm (2.4 in)	46 of 100 (Notable)
Hysham	United States	Record daily snowfall	15.2 cm (6.0 in)	46 of 100 (Notable)
Fischers Store	United States	Record daily precipitation	110.5 mm (4.4 in)	46 of 100 (Notable)
Rosalia 1NW	United States	Record daily precipitation	74.9 mm (2.9 in)	45 of 100 (Notable)
Olney 5 NNW	United States	Record daily precipitation	99.1 mm (3.9 in)	45 of 100 (Notable)
Wallaville- Mill Street	Australia	Record daily precipitation	62.0 mm (2.4 in)	43 of 100 (Notable)
Fazenda Santa Jacinta	Brazil	Record daily precipitation	33.2 mm (1.3 in)	43 of 100 (Notable)
Dalatangi	Iceland	Record daily precipitation	50.1 mm (2.0 in)	43 of 100 (Notable)
Fulton 3 W	United States	Record high maximum temperature	35.0 C (95.0 F)	43 of 100 (Notable)
Wilsonville	United States	Record daily precipitation	127.3 mm (5.0 in)	43 of 100 (Notable)
Sapphire (Argyle)	Australia	Record daily precipitation	29.6 mm (1.2 in)	42 of 100 (Notable)
Moyston	Australia	Record daily precipitation	38.0 mm (1.5 in)	42 of 100 (Notable)
Wamego 4 W	United States	Record daily precipitation	66.5 mm (2.6 in)	42 of 100 (Notable)
Brusett 3 E	United States	Record snow depth	25.4 cm (10.0 in)	42 of 100 (Notable)
Busby	United States	Record daily snowfall	30.5 cm (12.0 in)	42 of 100 (Notable)
Redfield	United States	Record daily precipitation	37.8 mm (1.5 in)	42 of 100 (Notable)
Wessington Springs	United States	Record daily precipitation	82.6 mm (3.3 in)	42 of 100 (Notable)
Illavale	Australia	Record daily precipitation	46.8 mm (1.8 in)	41 of 100 (Notable)
Fazenda Acude	Brazil	Record daily precipitation	57.9 mm (2.3 in)	41 of 100 (Notable)
Sao Bento Do Sapucai	Brazil	Record daily precipitation	32.2 mm (1.3 in)	41 of 100 (Notable)
Centralia	United States	Record daily precipitation	74.4 mm (2.9 in)	41 of 100 (Notable)
Olney	United States	Record daily precipitation	76.7 mm (3.0 in)	41 of 100 (Notable)
Theebine	Australia	Record daily precipitation	56.0 mm (2.2 in)	40 of 100 (Notable)
Mococa	Brazil	Record daily precipitation	55.2 mm (2.2 in)	40 of 100 (Notable)
Fazenda Graciosa	Brazil	Record daily precipitation	59.1 mm (2.3 in)	40 of 100 (Notable)
Usina Santa Maria	Brazil	Record daily precipitation	64.9 mm (2.6 in)	40 of 100 (Notable)
Greensboro	United States	Record high maximum temperature	35.0 C (95.0 F)	40 of 100 (Notable)
Milaca	United States	Record daily precipitation	40.6 mm (1.6 in)	40 of 100 (Notable)

Counts by Type and Timescale

1,253 records

Records set or tied on 9 May 1986 by type: Highest daily maximum 167, Lowest daily maximum 159, Highest daily minimum 92, Lowest daily minimum 95, Heaviest daily rainfall 677, Heaviest daily snowfall 40, Deepest snow cover 23.

Records on 9 May 1986 by type
Record type	Records
Highest daily maximum	167
Lowest daily maximum	159
Highest daily minimum	92
Lowest daily minimum	95
Heaviest daily rainfall	677
Heaviest daily snowfall	40
Deepest snow cover	23

Records on 9 May 1986 by timescale: all-time 4, monthly 30, daily 1,219.

How Much Records Were Beaten By

1,087 broken records

Margins by which the 1,087 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

9 May 1986

Top 20 records on 9 May 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1986	Aunet, NO	daily rain	28.9 mm (1.1 in)	21.8 mm (0.9 in)	73 years	70 of 100 (Major)
9 May 1986	Bangkok Metropolis, TH	all-time rain	248.9 mm (9.8 in)	81.6 mm (3.2 in)	6 years	65 of 100 (Major)
9 May 1986	Prachuap Khiri Khan, TH	monthly rain	197.1 mm (7.8 in)	116.6 mm (4.6 in)	34 years	63 of 100 (Major)
9 May 1986	Lien I Selbu, NO	daily rain	29.2 mm (1.1 in)	13.6 mm (0.5 in)	72 years	62 of 100 (Major)
9 May 1986	Hua Hin, TH	monthly rain	225.0 mm (8.9 in)	83.9 mm (3.3 in)	33 years	62 of 100 (Major)
9 May 1986	Elwood 8 S, US	daily rain	89.4 mm (3.5 in)	61.7 mm (2.4 in)	44 years	62 of 100 (Major)
9 May 1986	Wishek, US	daily rain	38.1 mm (1.5 in)	26.4 mm (1.0 in)	80 years	62 of 100 (Major)
9 May 1986	Snake Creek Powerhouse, US	daily rain	28.4 mm (1.1 in)	18.2 mm (0.7 in)	64 years	60 of 100 (Major)
9 May 1986	Elgin, US	daily rain	95.8 mm (3.8 in)	67.4 mm (2.7 in)	31 years	58 of 100 (Notable)
9 May 1986	Melstone, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	72 years	58 of 100 (Notable)
9 May 1986	Brusett 3 E, US	daily snowfall	25.4 cm (10.0 in)	25.4 cm (10.0 in)	36 years	57 of 100 (Notable)
9 May 1986	Halsey 2 W, US	daily rain	55.4 mm (2.2 in)	30.0 mm (1.2 in)	68 years	57 of 100 (Notable)
9 May 1986	Fredericksburg, US	daily rain	97.8 mm (3.9 in)	75.4 mm (3.0 in)	21 years	55 of 100 (Notable)
9 May 1986	Itaiquara, BR	daily rain	60.9 mm (2.4 in)	50.8 mm (2.0 in)	28 years	52 of 100 (Notable)
9 May 1986	Vaernes, NO	daily rain	27.5 mm (1.1 in)	15.8 mm (0.6 in)	40 years	52 of 100 (Notable)
9 May 1986	Phuket, TH	daily rain	127.0 mm (5.0 in)	90.6 mm (3.6 in)	31 years	52 of 100 (Notable)
9 May 1986	Eustis 2 NW, US	daily rain	62.5 mm (2.5 in)	41.9 mm (1.6 in)	36 years	52 of 100 (Notable)
9 May 1986	Derrinallum (Craigmore), AU	daily rain	28.0 mm (1.1 in)	10.7 mm (0.4 in)	76 years	51 of 100 (Notable)
9 May 1986	Upton, US	daily rain	33.0 mm (1.3 in)	20.3 mm (0.8 in)	59 years	51 of 100 (Notable)
9 May 1986	Bulayevo, KZ	monthly rain	30.9 mm (1.2 in)	12.4 mm (0.5 in)	4 years	50 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

1793 to 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 1,253 records.

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

Records on 05-09 in each year
Year	Records
1793	1
1795	1
1806	1
1810	1
1823	1
1834	1
1838	1
1843	1
1845	2
1846	1
1848	1
1850	2
1855	2
1857	1
1858	1
1861	1
1862	1
1864	2
1865	2
1867	2
1872	1
1873	2
1874	1
1875	2
1879	4
1880	3
1882	1
1883	2
1884	3
1885	3
1889	3
1890	3
1891	3
1892	1
1893	1
1895	2
1896	4
1897	3
1898	3
1899	2
1900	2
1901	9
1902	8
1903	9
1904	14
1905	34
1906	41
1907	11
1908	16
1909	34
1910	45
1911	23
1912	23
1913	15
1914	43
1915	27
1916	26
1917	50
1918	49
1919	47
1920	56
1921	102
1922	45
1923	461
1924	262
1925	123
1926	196
1927	343
1928	302
1929	166
1930	526
1931	411
1932	132
1933	482
1934	750
1935	111
1936	622
1937	128
1938	171
1939	345
1940	237
1941	335
1942	180
1943	524
1944	412
1945	538
1946	278
1947	1,145
1948	379
1949	417
1950	660
1951	188
1952	348
1953	507
1954	489
1955	288
1956	722
1957	505
1958	355
1959	252
1960	748
1961	516
1962	435
1963	1,103
1964	503
1965	730
1966	994
1967	681
1968	545
1969	653
1970	372
1971	338
1972	587
1973	386
1974	699
1975	465
1976	714
1977	931
1978	649
1979	1,605
1980	1,030
1981	639
1982	523
1983	872
1984	892
1985	829
1986	1,253
1987	1,481
1988	594
1989	1,347
1990	850
1991	759
1992	1,476
1993	967
1994	573
1995	960
1996	1,260
1997	1,088
1998	1,182
1999	970
2000	1,114
2001	969
2002	1,489
2003	1,802
2004	926
2005	851
2006	738
2007	765
2008	693
2009	816
2010	764
2011	1,104
2012	686
2013	684
2014	754
2015	689
2016	917
2017	539
2018	879
2019	1,043
2020	1,673
2021	501
2022	1,308
2023	474
2024	792
2025	622
2026	309

Download the Data

Data for records on 1986-05-09: 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	1,040
50 to 100	32
100 to 150	8
150 to 200	5
200 to 250	0
250 to 300	2