Weather Records on 18 April 1986

622 weather records were set or tied worldwide on 18 April 1986. Highest significance: Rugby, US.

Key Facts for 18 April 1986

On 18 April 1986, 622 weather records were set or tied at long-record stations worldwide.
118 were record highs and 183 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 15 monthly and 606 daily.
Rugby set a daily record precipitation of 38.6 mm (1.5 in) on 18 April 1986.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 466 records.

Record Map

622 stations

622 station records on 18 April 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rugby	United States	Record daily precipitation	38.6 mm (1.5 in)	64 of 100 (Major)
Levendale	Australia	Record daily precipitation	69.6 mm (2.7 in)	63 of 100 (Major)
Spearfish	United States	Record daily precipitation	50.3 mm (2.0 in)	62 of 100 (Major)
Anahola 1114	United States	Record daily precipitation	78.7 mm (3.1 in)	53 of 100 (Notable)
Bosbokrand (Pol)	South Africa	Record daily precipitation	70.0 mm (2.8 in)	50 of 100 (Notable)
Jamestown State Hosp	United States	Record snow depth	15.2 cm (6.0 in)	50 of 100 (Notable)
Tarraleah Village	Australia	Record daily precipitation	64.8 mm (2.6 in)	48 of 100 (Notable)
Sorve	Estonia	Record daily precipitation	26.3 mm (1.0 in)	47 of 100 (Notable)
Black Lake	United States	Record daily snowfall	45.7 cm (18.0 in)	45 of 100 (Notable)
Roxboro 7 ESE	United States	Record low maximum temperature	10.0 C (50.0 F)	44 of 100 (Notable)
Maria Island (Darlington)	Australia	Record daily precipitation	42.0 mm (1.7 in)	42 of 100 (Notable)
Tunnack Post Office	Australia	Record daily precipitation	55.8 mm (2.2 in)	42 of 100 (Notable)
Mullen 21 NW	United States	Record daily precipitation	43.9 mm (1.7 in)	41 of 100 (Notable)
Mc Ville	United States	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Bothwell (Franklin Street)	Australia	Record daily precipitation	40.0 mm (1.6 in)	40 of 100 (Notable)
Napoleon	United States	Record snow depth	12.7 cm (5.0 in)	40 of 100 (Notable)
Shannon River (Hermitage)	Australia	Record daily precipitation	51.6 mm (2.0 in)	39 of 100 (Notable)
Nephi	United States	Record daily snowfall	5.1 cm (2.0 in)	39 of 100 (Notable)
Elandshoek	South Africa	Record daily precipitation	25.0 mm (1.0 in)	38 of 100 (Notable)
Eustis 2 NW	United States	Record daily precipitation	39.1 mm (1.5 in)	38 of 100 (Notable)
Ipswich	United States	Record snow depth	10.2 cm (4.0 in)	38 of 100 (Notable)
Park City G.C.	United States	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Haenertsburg (Pol)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Velva	United States	Record daily precipitation	38.9 mm (1.5 in)	37 of 100 (Notable)
Poteet	United States	Record high minimum temperature	30.0 C (86.0 F)	37 of 100 (Notable)
Karoi	Zimbabwe	Record daily precipitation	46.9 mm (1.8 in)	37 of 100 (Notable)
Victoria Valley (Glenrowan)	Australia	Record daily precipitation	69.0 mm (2.7 in)	36 of 100 (Notable)
Albany 3 SE	United States	Record low minimum temperature	2.8 C (37.0 F)	36 of 100 (Notable)
Nashville	United States	Record low maximum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Underwood	United States	Record daily precipitation	35.3 mm (1.4 in)	36 of 100 (Notable)
Bothwell (Cluny)	Australia	Record daily precipitation	45.8 mm (1.8 in)	35 of 100 (Notable)
Ft Ross	United States	Record low minimum temperature	1.7 C (35.1 F)	35 of 100 (Notable)
Cimarron	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Forman 5 SSE	United States	Record daily precipitation	34.8 mm (1.4 in)	35 of 100 (Notable)
Jamestown State Hosp	United States	Record daily precipitation	27.2 mm (1.1 in)	35 of 100 (Notable)
Pt Mugu Nf	United States	Record high maximum temperature	27.8 C (82.0 F)	35 of 100 (Notable)
Halaula 1110	United States	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Jamestown Muni AP	United States	Record daily precipitation	28.2 mm (1.1 in)	34 of 100 (Routine)
Zavizan	Croatia	Record daily precipitation	52.0 mm (2.0 in)	33 of 100 (Routine)
Zapotitlan Palmas (Smn)	Mexico	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)
Ellendale	United States	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)
Harvey 4NE	United States	Record daily precipitation	25.1 mm (1.0 in)	33 of 100 (Routine)
Philip AP	United States	Record daily precipitation	28.4 mm (1.1 in)	33 of 100 (Routine)
San Cristobal	Mexico	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Markovo	Russia	Record high maximum temperature	2.1 C (35.8 F)	32 of 100 (Routine)
Highland Home	United States	Record low minimum temperature	1.7 C (35.1 F)	32 of 100 (Routine)
New Holland	United States	Record low maximum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Big Meadows	United States	Record snow depth	10.2 cm (4.0 in)	32 of 100 (Routine)
Gargett Post Office	Australia	Record daily precipitation	48.0 mm (1.9 in)	31 of 100 (Routine)
Kempton (Oakmore)	Australia	Record daily precipitation	33.0 mm (1.3 in)	31 of 100 (Routine)
Dullstroom (Sar)	South Africa	Record daily precipitation	54.8 mm (2.2 in)	31 of 100 (Routine)
Clatskanie	United States	Record low minimum temperature	-3.3 C (26.1 F)	31 of 100 (Routine)
Longvalley	United States	Record daily precipitation	36.8 mm (1.4 in)	31 of 100 (Routine)
Jericho (Northumbria)	Australia	Record daily precipitation	53.4 mm (2.1 in)	30 of 100 (Routine)
San Jose de Raices	Mexico	Record low maximum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Letaba Estates	South Africa	Record daily precipitation	46.5 mm (1.8 in)	30 of 100 (Routine)
Black Hills	South Africa	Record daily precipitation	27.5 mm (1.1 in)	30 of 100 (Routine)
Cassville 1 NE	United States	Record low maximum temperature	13.3 C (55.9 F)	30 of 100 (Routine)
Aiken 5SE	United States	Record low minimum temperature	1.1 C (34.0 F)	30 of 100 (Routine)
Lisboa Geofisica	Portugal	Record low minimum temperature	7.1 C (44.8 F)	29 of 100 (Routine)

Counts by Type and Timescale

622 records

Records set or tied on 18 April 1986 by type: Highest daily maximum 67, Lowest daily maximum 102, Highest daily minimum 51, Lowest daily minimum 81, Heaviest daily rainfall 278, Heaviest daily snowfall 17, Deepest snow cover 26.

Records on 18 April 1986 by type
Record type	Records
Highest daily maximum	67
Lowest daily maximum	102
Highest daily minimum	51
Lowest daily minimum	81
Heaviest daily rainfall	278
Heaviest daily snowfall	17
Deepest snow cover	26

Records on 18 April 1986 by timescale: all-time 1, monthly 15, daily 606.

How Much Records Were Beaten By

514 broken records

Margins by which the 514 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

18 April 1986

Top 20 records on 18 April 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1986	Rugby, US	daily rain	38.6 mm (1.5 in)	30.5 mm (1.2 in)	53 years	64 of 100 (Major)
18 April 1986	Levendale, AU	daily rain	69.6 mm (2.7 in)	65.5 mm (2.6 in)	53 years	63 of 100 (Major)
18 April 1986	Spearfish, US	daily rain	50.3 mm (2.0 in)	27.4 mm (1.1 in)	91 years	62 of 100 (Major)
18 April 1986	Anahola 1114, US	daily rain	78.7 mm (3.1 in)	61.9 mm (2.4 in)	36 years	53 of 100 (Notable)
18 April 1986	Bosbokrand (Pol), ZA	daily rain	70.0 mm (2.8 in)	44.6 mm (1.8 in)	48 years	50 of 100 (Notable)
18 April 1986	Jamestown State Hosp, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	85 years	50 of 100 (Notable)
18 April 1986	Tarraleah Village, AU	daily rain	64.8 mm (2.6 in)	31.8 mm (1.3 in)	25 years	48 of 100 (Notable)
18 April 1986	Sorve, EE	monthly rain	26.3 mm (1.0 in)	1.2 mm (0.05 in)	77 years	47 of 100 (Notable)
18 April 1986	Black Lake, US	monthly snowfall	45.7 cm (18.0 in)	10.1 cm (4.0 in)	44 years	45 of 100 (Notable)
18 April 1986	Roxboro 7 ESE, US	daily low max	10.0 C (50.0 F)	5.0 C (9.0 F)	90 years	44 of 100 (Notable)
18 April 1986	Maria Island (Darlington), AU	daily rain	42.0 mm (1.7 in)	29.8 mm (1.2 in)	28 years	42 of 100 (Notable)
18 April 1986	Tunnack Post Office, AU	daily rain	55.8 mm (2.2 in)	23.5 mm (0.9 in)	51 years	42 of 100 (Notable)
18 April 1986	Mullen 21 NW, US	daily rain	43.9 mm (1.7 in)	37.3 mm (1.5 in)	16 years	41 of 100 (Notable)
18 April 1986	Mc Ville, US	daily rain	25.4 mm (1.0 in)	20.3 mm (0.8 in)	15 years	41 of 100 (Notable)
18 April 1986	Bothwell (Franklin Street), AU	daily rain	40.0 mm (1.6 in)	20.4 mm (0.8 in)	25 years	40 of 100 (Notable)
18 April 1986	Napoleon, US	daily snow depth	12.7 cm (5.0 in)	7.6 cm (3.0 in)	68 years	40 of 100 (Notable)
18 April 1986	Shannon River (Hermitage), AU	monthly rain	51.6 mm (2.0 in)	4.1 mm (0.16 in)	57 years	39 of 100 (Notable)
18 April 1986	Nephi, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	80 years	39 of 100 (Notable)
18 April 1986	Elandshoek, ZA	daily rain	25.0 mm (1.0 in)	19.7 mm (0.8 in)	43 years	38 of 100 (Notable)
18 April 1986	Eustis 2 NW, US	daily rain	39.1 mm (1.5 in)	31.2 mm (1.2 in)	11 years	38 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 622 records.

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

Records on 04-18 in each year
Year	Records
1793	1
1807	2
1815	1
1838	1
1847	1
1849	1
1851	1
1852	3
1854	3
1855	1
1865	4
1867	1
1870	1
1871	1
1875	4
1877	2
1878	1
1879	3
1880	2
1884	2
1886	2
1887	3
1888	1
1889	1
1890	2
1891	1
1892	3
1893	5
1894	7
1895	2
1896	3
1897	5
1898	8
1899	2
1900	2
1901	6
1902	5
1903	11
1904	9
1905	12
1906	18
1907	17
1908	37
1909	19
1910	19
1911	25
1912	21
1913	26
1914	38
1915	31
1916	22
1917	40
1918	76
1919	16
1920	64
1921	58
1922	85
1923	107
1924	101
1925	154
1926	322
1927	391
1928	323
1929	126
1930	113
1931	173
1932	326
1933	211
1934	391
1935	264
1936	483
1937	477
1938	711
1939	525
1940	322
1941	496
1942	287
1943	298
1944	259
1945	371
1946	357
1947	444
1948	932
1949	345
1950	244
1951	658
1952	536
1953	1,322
1954	442
1955	817
1956	467
1957	629
1958	370
1959	468
1960	320
1961	520
1962	484
1963	662
1964	449
1965	363
1966	776
1967	882
1968	867
1969	795
1970	771
1971	1,106
1972	470
1973	953
1974	326
1975	751
1976	1,309
1977	717
1978	803
1979	841
1980	842
1981	708
1982	616
1983	2,082
1984	625
1985	1,119
1986	622
1987	1,068
1988	936
1989	625
1990	1,368
1991	780
1992	702
1993	730
1994	1,218
1995	1,601
1996	826
1997	1,256
1998	1,011
1999	1,428
2000	912
2001	1,487
2002	2,084
2003	969
2004	846
2005	622
2006	1,262
2007	675
2008	913
2009	624
2010	478
2011	1,122
2012	744
2013	2,509
2014	534
2015	519
2016	973
2017	588
2018	1,202
2019	601
2020	770
2021	592
2022	1,013
2023	739
2024	641
2025	997
2026	498

Download the Data

Data for records on 1986-04-18: 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	463
20 to 40	31
40 to 60	7
60 to 80	7
80 to 100	0
100 to 120	4
120 to 140	1
140 to 160	1