Weather Records on 12 June 1986

778 weather records were set or tied worldwide on 12 June 1986. Highest significance: Howell Wwtp, US.

Key Facts for 12 June 1986

On 12 June 1986, 778 weather records were set or tied at long-record stations worldwide.
411 were record highs and 165 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 16 monthly and 760 daily.
Howell Wwtp set a daily record precipitation of 55.4 mm (2.2 in) on 12 June 1986.
Across 166 earlier years (1797 to 2026) the same calendar date averaged 416 records.

Record Map

778 stations

778 station records on 12 June 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 June 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Howell Wwtp	United States	Record daily precipitation	55.4 mm (2.2 in)	63 of 100 (Major)
Pontiac Wwtp	United States	Record daily precipitation	84.3 mm (3.3 in)	62 of 100 (Major)
Charlotte	United States	Record daily precipitation	64.0 mm (2.5 in)	61 of 100 (Major)
Lowell	United States	Record daily precipitation	71.9 mm (2.8 in)	59 of 100 (Notable)
Hillsdale	United States	Record daily precipitation	50.8 mm (2.0 in)	57 of 100 (Notable)
Grand Ledge 1 NW	United States	Record daily precipitation	124.5 mm (4.9 in)	51 of 100 (Notable)
Kaliningrad	Russia	Record daily precipitation	42.7 mm (1.7 in)	50 of 100 (Notable)
Mapleton Depot	United States	Record daily precipitation	69.9 mm (2.8 in)	50 of 100 (Notable)
Chicontepec de Tejeda (Smn)	Mexico	Record daily precipitation	179.8 mm (7.1 in)	48 of 100 (Notable)
Koolau Dam 833	United States	Record daily precipitation	122.4 mm (4.8 in)	46 of 100 (Notable)
Williamston 3NE	United States	Record daily precipitation	61.5 mm (2.4 in)	45 of 100 (Notable)
Brookhaven City	United States	Record low minimum temperature	7.8 C (46.0 F)	45 of 100 (Notable)
Sault Ste Marie Sanderson Fld	United States	Record daily precipitation	48.5 mm (1.9 in)	45 of 100 (Notable)
Valga	Estonia	Record daily precipitation	60.4 mm (2.4 in)	44 of 100 (Notable)
Losinoborskoe	Russia	Record daily precipitation	30.9 mm (1.2 in)	44 of 100 (Notable)
Chilton	United States	Record daily precipitation	60.7 mm (2.4 in)	44 of 100 (Notable)
Hammonton 1 NE	United States	Record daily precipitation	76.5 mm (3.0 in)	43 of 100 (Notable)
Marietta Lock 1	United States	Record daily precipitation	48.8 mm (1.9 in)	42 of 100 (Notable)
Pellston Rgnl AP	United States	Record daily precipitation	56.6 mm (2.2 in)	42 of 100 (Notable)
Timboon	Australia	Record daily precipitation	30.4 mm (1.2 in)	41 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record high minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Piacabucu	Brazil	Record daily precipitation	100.7 mm (4.0 in)	39 of 100 (Notable)
Nicosia	Cyprus	Record low maximum temperature	26.8 C (80.2 F)	39 of 100 (Notable)
Hastings	United States	Record daily precipitation	55.9 mm (2.2 in)	39 of 100 (Notable)
Cadillac	United States	Record daily precipitation	45.0 mm (1.8 in)	39 of 100 (Notable)
Double Island Point Lighthouse	Australia	Record daily precipitation	47.4 mm (1.9 in)	38 of 100 (Notable)
E Tawas	United States	Record daily precipitation	29.5 mm (1.2 in)	38 of 100 (Notable)
Putneyville 2 SE Dam	United States	Record daily precipitation	98.6 mm (3.9 in)	38 of 100 (Notable)
Rio Grande City	United States	Record daily precipitation	50.0 mm (2.0 in)	38 of 100 (Notable)
Bolivar	United States	Record high minimum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Hamlin	United States	Record high minimum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Huajintlan	Mexico	Record low maximum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Milford 2 SE	United States	Record high maximum temperature	37.8 C (100.0 F)	36 of 100 (Notable)
Saginaw #3	United States	Record daily precipitation	36.3 mm (1.4 in)	36 of 100 (Notable)
Mineral Ridge Wtr Wks	United States	Record daily precipitation	60.7 mm (2.4 in)	36 of 100 (Notable)
Amealco	Mexico	Record daily precipitation	35.3 mm (1.4 in)	35 of 100 (Notable)
Bucuresti Filaret	Romania	Record daily precipitation	44.0 mm (1.7 in)	35 of 100 (Notable)
Newark Ag Farm	United States	Record daily precipitation	53.3 mm (2.1 in)	35 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	54.4 mm (2.1 in)	35 of 100 (Notable)
Norwalk Wwtp	United States	Record high minimum temperature	21.7 C (71.1 F)	35 of 100 (Notable)
Yanzhou	China	Record daily precipitation	74.2 mm (2.9 in)	34 of 100 (Routine)
Derry 4 SW	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Parker	United States	Record daily precipitation	86.9 mm (3.4 in)	34 of 100 (Routine)
Shovi	Georgia	Record daily precipitation	33.9 mm (1.3 in)	33 of 100 (Routine)
Apatzingan (Smn)	Mexico	Record low maximum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Dividalen	Norway	Record high minimum temperature	13.6 C (56.5 F)	33 of 100 (Routine)
Sierraville Rs	United States	Record high minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Grayling	United States	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Clearfield	United States	Record daily precipitation	44.2 mm (1.7 in)	33 of 100 (Routine)
Landisville 2 NW	United States	Record daily precipitation	77.2 mm (3.0 in)	33 of 100 (Routine)
Big Meadows	United States	Record daily precipitation	46.0 mm (1.8 in)	33 of 100 (Routine)
Carrollton Lock 1	United States	Record daily precipitation	39.4 mm (1.6 in)	32 of 100 (Routine)
Denton 2 E	United States	Record high maximum temperature	37.8 C (100.0 F)	32 of 100 (Routine)
Grants Pass	United States	Record high maximum temperature	38.3 C (100.9 F)	32 of 100 (Routine)
Ashland	United States	Record high minimum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
San Felipe (Dge)	Mexico	Record daily precipitation	37.6 mm (1.5 in)	31 of 100 (Routine)
Bjoernoeya	Norway	Record high minimum temperature	4.6 C (40.3 F)	31 of 100 (Routine)
Helvecia (Efbm)	Brazil	Record daily precipitation	30.1 mm (1.2 in)	30 of 100 (Routine)
Sheffield	United Kingdom	Record low minimum temperature	4.8 C (40.6 F)	30 of 100 (Routine)
Weaverville	United States	Record high maximum temperature	40.0 C (104.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

778 records

Records set or tied on 12 June 1986 by type: Highest daily maximum 159, Lowest daily maximum 92, Highest daily minimum 252, Lowest daily minimum 73, Heaviest daily rainfall 202.

Records on 12 June 1986 by type
Record type	Records
Highest daily maximum	159
Lowest daily maximum	92
Highest daily minimum	252
Lowest daily minimum	73
Heaviest daily rainfall	202
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 June 1986 by timescale: all-time 2, monthly 16, daily 760.

How Much Records Were Beaten By

592 broken records

Margins by which the 592 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 95.5. Ties are not counted.

Top 20 by Significance

12 June 1986

Top 20 records on 12 June 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 June 1986	Howell Wwtp, US	daily rain	55.4 mm (2.2 in)	30.0 mm (1.2 in)	84 years	63 of 100 (Major)
12 June 1986	Pontiac Wwtp, US	daily rain	84.3 mm (3.3 in)	53.8 mm (2.1 in)	45 years	62 of 100 (Major)
12 June 1986	Charlotte, US	daily rain	64.0 mm (2.5 in)	46.5 mm (1.8 in)	45 years	61 of 100 (Major)
12 June 1986	Lowell, US	daily rain	71.9 mm (2.8 in)	47.3 mm (1.9 in)	45 years	59 of 100 (Notable)
12 June 1986	Hillsdale, US	daily rain	50.8 mm (2.0 in)	27.9 mm (1.1 in)	87 years	57 of 100 (Notable)
12 June 1986	Grand Ledge 1 NW, US	all-time rain	124.5 mm (4.9 in)	33.1 mm (1.3 in)	6 years	51 of 100 (Notable)
12 June 1986	Kaliningrad, RU	daily rain	42.7 mm (1.7 in)	27.0 mm (1.1 in)	23 years	50 of 100 (Notable)
12 June 1986	Mapleton Depot, US	daily rain	69.9 mm (2.8 in)	37.1 mm (1.5 in)	40 years	50 of 100 (Notable)
12 June 1986	Chicontepec de Tejeda (Smn), MX	daily rain	179.8 mm (7.1 in)	95.5 mm (3.8 in)	33 years	48 of 100 (Notable)
12 June 1986	Koolau Dam 833, US	monthly rain	122.4 mm (4.8 in)	18.3 mm (0.7 in)	52 years	46 of 100 (Notable)
12 June 1986	Williamston 3NE, US	daily rain	61.5 mm (2.4 in)	35.6 mm (1.4 in)	27 years	45 of 100 (Notable)
12 June 1986	Brookhaven City, US	daily low min	7.8 C (46.0 F)	3.9 C (7.0 F)	72 years	45 of 100 (Notable)
12 June 1986	Sault Ste Marie Sanderson Fld, US	daily rain	48.5 mm (1.9 in)	27.7 mm (1.1 in)	43 years	45 of 100 (Notable)
12 June 1986	Valga, EE	monthly rain	60.4 mm (2.4 in)	15.7 mm (0.6 in)	29 years	44 of 100 (Notable)
12 June 1986	Losinoborskoe, RU	daily rain	30.9 mm (1.2 in)	20.0 mm (0.8 in)	13 years	44 of 100 (Notable)
12 June 1986	Chilton, US	daily rain	60.7 mm (2.4 in)	37.8 mm (1.5 in)	16 years	44 of 100 (Notable)
12 June 1986	Hammonton 1 NE, US	daily rain	76.5 mm (3.0 in)	28.5 mm (1.1 in)	40 years	43 of 100 (Notable)
12 June 1986	Marietta Lock 1, US	daily rain	48.8 mm (1.9 in)	29.7 mm (1.2 in)	40 years	42 of 100 (Notable)
12 June 1986	Pellston Rgnl AP, US	daily rain	56.6 mm (2.2 in)	32.2 mm (1.3 in)	16 years	42 of 100 (Notable)
12 June 1986	Timboon, AU	daily rain	30.4 mm (1.2 in)	11.9 mm (0.5 in)	55 years	41 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 1986

Records set or tied on this calendar date in each year from 1797 to 1986. 1986 had 778 records.

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

Records on 06-12 in each year
Year	Records
1797	1
1811	2
1838	1
1840	1
1843	1
1844	1
1845	1
1847	2
1854	1
1857	2
1859	1
1862	1
1863	1
1865	3
1866	3
1867	1
1871	1
1873	1
1874	3
1876	1
1877	4
1879	2
1880	5
1881	4
1882	2
1883	1
1884	2
1885	2
1887	2
1888	1
1889	1
1890	1
1892	1
1893	3
1894	6
1895	1
1896	1
1897	2
1898	8
1899	7
1900	3
1901	3
1902	8
1903	34
1904	8
1905	10
1906	24
1907	20
1908	9
1909	16
1910	37
1911	21
1912	23
1913	19
1914	36
1915	26
1916	80
1917	117
1918	44
1919	56
1920	93
1921	42
1922	56
1923	166
1924	153
1925	165
1926	201
1927	281
1928	180
1929	217
1930	127
1931	150
1932	352
1933	361
1934	159
1935	259
1936	440
1937	405
1938	349
1939	297
1940	389
1941	512
1942	729
1943	399
1944	423
1945	567
1946	321
1947	840
1948	215
1949	407
1950	530
1951	735
1952	1,035
1953	730
1954	337
1955	759
1956	786
1957	310
1958	454
1959	320
1960	200
1961	405
1962	328
1963	618
1964	405
1965	406
1966	530
1967	706
1968	404
1969	834
1970	701
1971	374
1972	903
1973	894
1974	575
1975	560
1976	617
1977	494
1978	438
1979	1,013
1980	718
1981	784
1982	734
1983	664
1984	653
1985	1,203
1986	778
1987	742
1988	785
1989	797
1990	664
1991	756
1992	849
1993	970
1994	654
1995	953
1996	925
1997	932
1998	1,683
1999	806
2000	1,169
2001	1,231
2002	965
2003	1,187
2004	759
2005	1,804
2006	1,216
2007	784
2008	1,219
2009	858
2010	1,423
2011	786
2012	751
2013	931
2014	421
2015	679
2016	809
2017	910
2018	635
2019	1,285
2020	712
2021	767
2022	1,204
2023	805
2024	805
2025	409
2026	979

Download the Data

Data for records on 1986-06-12: 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	557
20 to 40	28
40 to 60	6
60 to 80	0
80 to 100	1