Weather Records on 9 April 1986

620 weather records were set or tied worldwide on 9 April 1986. Highest significance: Konstanz, DE.

Key Facts for 9 April 1986

On 9 April 1986, 620 weather records were set or tied at long-record stations worldwide.
286 were record highs and 139 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 23 monthly and 597 daily.
Konstanz set a monthly record daily precipitation of 48.9 mm (1.9 in) on 9 April 1986.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

620 stations

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

Weather records on 9 April 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Konstanz	Germany	Record daily precipitation	48.9 mm (1.9 in)	64 of 100 (Major)
Kr. Ravensburg Weingarten	Germany	Record daily precipitation	55.7 mm (2.2 in)	64 of 100 (Major)
Dubois	United States	Record daily precipitation	27.9 mm (1.1 in)	61 of 100 (Major)
Sigmaringen-Laiz	Germany	Record daily precipitation	45.5 mm (1.8 in)	58 of 100 (Notable)
Dubois	United States	Record daily snowfall	25.4 cm (10.0 in)	57 of 100 (Notable)
Haleakala Rs 338	United States	Record daily precipitation	223.5 mm (8.8 in)	55 of 100 (Notable)
Uberlingen/Bodensee	Germany	Record daily precipitation	53.9 mm (2.1 in)	54 of 100 (Notable)
Aach	Germany	Record daily precipitation	52.2 mm (2.1 in)	52 of 100 (Notable)
Sigmarszell-Zeisertsweiler	Germany	Record daily precipitation	57.0 mm (2.2 in)	51 of 100 (Notable)
Clover Valley	United States	Record daily precipitation	26.7 mm (1.1 in)	51 of 100 (Notable)
Jayuya	Puerto Rico [United States]	Record daily precipitation	71.4 mm (2.8 in)	47 of 100 (Notable)
Zuerich/Fluntern	Switzerland	Record daily precipitation	49.5 mm (1.9 in)	47 of 100 (Notable)
Willeroo	Australia	Record daily precipitation	29.2 mm (1.1 in)	46 of 100 (Notable)
Eagle	United States	Record low maximum temperature	-18.3 C (-0.9 F)	46 of 100 (Notable)
Elkins- Randolph Co AP	United States	Record daily snowfall	22.1 cm (8.7 in)	46 of 100 (Notable)
Praha-Klementinum	Czech Republic	Record high maximum temperature	24.6 C (76.3 F)	44 of 100 (Notable)
Chestnut Hill	United States	Record high minimum temperature	14.4 C (57.9 F)	44 of 100 (Notable)
Petersburg 1	United States	Record daily snowfall	20.3 cm (8.0 in)	44 of 100 (Notable)
Warthausen-Birkenhard	Germany	Record daily precipitation	40.2 mm (1.6 in)	42 of 100 (Notable)
Corozal Substn	Puerto Rico [United States]	Record daily precipitation	78.7 mm (3.1 in)	42 of 100 (Notable)
Joquicingo	Mexico	Record low maximum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Gulkana AP	United States	Record low minimum temperature	-32.8 C (-27.0 F)	41 of 100 (Notable)
San Saba	United States	Record high maximum temperature	34.4 C (93.9 F)	39 of 100 (Notable)
Tuttlingen	Germany	Record daily precipitation	40.4 mm (1.6 in)	38 of 100 (Notable)
Hurbanovo	Slovakia	Record high maximum temperature	26.4 C (79.5 F)	38 of 100 (Notable)
Saentis	Switzerland	Record daily precipitation	67.7 mm (2.7 in)	38 of 100 (Notable)
Eastport	United States	Record daily precipitation	35.8 mm (1.4 in)	38 of 100 (Notable)
Santa Clara Do Ingai	Brazil	Record daily precipitation	51.0 mm (2.0 in)	37 of 100 (Notable)
Qacu (Bos)	South Africa	Record daily precipitation	43.5 mm (1.7 in)	37 of 100 (Notable)
Den Haag	South Africa	Record daily precipitation	52.5 mm (2.1 in)	37 of 100 (Notable)
Kulani Camp 79	United States	Record daily precipitation	139.7 mm (5.5 in)	37 of 100 (Notable)
UNIV of Hawaii 713	United States	Record daily precipitation	39.1 mm (1.5 in)	37 of 100 (Notable)
Pecs Pogany	Hungary	Record high maximum temperature	25.4 C (77.7 F)	36 of 100 (Notable)
Verona Villafranca	Italy	Record daily precipitation	38.8 mm (1.5 in)	36 of 100 (Notable)
Hilo Intl AP 87	United States	Record daily precipitation	100.3 mm (3.9 in)	36 of 100 (Notable)
Merklingen	Germany	Record daily precipitation	46.3 mm (1.8 in)	35 of 100 (Notable)
Hirado	Japan	Record daily precipitation	117.0 mm (4.6 in)	35 of 100 (Notable)
Ozone	United States	Record daily precipitation	55.9 mm (2.2 in)	35 of 100 (Notable)
Kahului AP	United States	Record daily precipitation	25.9 mm (1.0 in)	35 of 100 (Notable)
Valdez WSO	United States	Record low maximum temperature	-5.6 C (21.9 F)	35 of 100 (Notable)
Osijek	Croatia	Record high maximum temperature	27.7 C (81.9 F)	34 of 100 (Routine)
San Sebastian - Igueldo	Spain	Record daily precipitation	51.5 mm (2.0 in)	34 of 100 (Routine)
Kasilof 3 NW	United States	Record low maximum temperature	-4.4 C (24.1 F)	34 of 100 (Routine)
Hawaii Vol Np HQ 54	United States	Record daily precipitation	102.9 mm (4.1 in)	34 of 100 (Routine)
Northway AP	United States	Record low minimum temperature	-36.7 C (-34.1 F)	34 of 100 (Routine)
Vasilevici	Belarus	Record high minimum temperature	9.6 C (49.3 F)	33 of 100 (Routine)
Radolfzell-Markelfingen	Germany	Record daily precipitation	40.9 mm (1.6 in)	33 of 100 (Routine)
Szombathely	Hungary	Record high maximum temperature	24.3 C (75.7 F)	33 of 100 (Routine)
Hueycatenango (Cfe)	Mexico	Record low minimum temperature	10.6 C (51.1 F)	33 of 100 (Routine)
Walnut 4S	United States	Record daily precipitation	56.6 mm (2.2 in)	33 of 100 (Routine)
Kukuihaele Hic 199	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Lisboa Geofisica	Portugal	Record low minimum temperature	5.5 C (41.9 F)	31 of 100 (Routine)
Dordrecht - Tnk 14	South Africa	Record daily precipitation	43.2 mm (1.7 in)	31 of 100 (Routine)
Pahoa 65	United States	Record daily precipitation	74.4 mm (2.9 in)	31 of 100 (Routine)
Oberstdorf	Germany	Record daily precipitation	36.3 mm (1.4 in)	30 of 100 (Routine)
Moshi	Tanzania	Record daily precipitation	174.7 mm (6.9 in)	30 of 100 (Routine)
Phillips	United States	Record snow depth	30.5 cm (12.0 in)	30 of 100 (Routine)
Cidra 1 E	Puerto Rico [United States]	Record daily precipitation	42.7 mm (1.7 in)	29 of 100 (Routine)
Mt Adams Rs	United States	Record high minimum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
Honokohua 493	United States	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)

Counts by Type and Timescale

620 records

Records set or tied on 9 April 1986 by type: Highest daily maximum 156, Lowest daily maximum 71, Highest daily minimum 130, Lowest daily minimum 68, Heaviest daily rainfall 173, Heaviest daily snowfall 16, Deepest snow cover 6.

Records on 9 April 1986 by type
Record type	Records
Highest daily maximum	156
Lowest daily maximum	71
Highest daily minimum	130
Lowest daily minimum	68
Heaviest daily rainfall	173
Heaviest daily snowfall	16
Deepest snow cover	6

Records on 9 April 1986 by timescale: all-time 0, monthly 23, daily 597.

How Much Records Were Beaten By

483 broken records

Margins by which the 483 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 190.0. Ties are not counted.

Top 20 by Significance

9 April 1986

Top 20 records on 9 April 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 April 1986	Konstanz, DE	monthly rain	48.9 mm (1.9 in)	21.2 mm (0.8 in)	34 years	64 of 100 (Major)
9 April 1986	Kr. Ravensburg Weingarten, DE	monthly rain	55.7 mm (2.2 in)	18.9 mm (0.7 in)	50 years	64 of 100 (Major)
9 April 1986	Dubois, US	daily rain	27.9 mm (1.1 in)	22.8 mm (0.9 in)	51 years	61 of 100 (Major)
9 April 1986	Sigmaringen-Laiz, DE	monthly rain	45.5 mm (1.8 in)	14.6 mm (0.6 in)	34 years	58 of 100 (Notable)
9 April 1986	Dubois, US	daily snowfall	25.4 cm (10.0 in)	19.0 cm (7.5 in)	51 years	57 of 100 (Notable)
9 April 1986	Haleakala Rs 338, US	monthly rain	223.5 mm (8.8 in)	78.0 mm (3.1 in)	6 years	55 of 100 (Notable)
9 April 1986	Uberlingen/Bodensee, DE	monthly rain	53.9 mm (2.1 in)	21.7 mm (0.9 in)	2 years	54 of 100 (Notable)
9 April 1986	Aach, DE	monthly rain	52.2 mm (2.1 in)	14.9 mm (0.6 in)	7 years	52 of 100 (Notable)
9 April 1986	Sigmarszell-Zeisertsweiler, DE	daily rain	57.0 mm (2.2 in)	30.7 mm (1.2 in)	32 years	51 of 100 (Notable)
9 April 1986	Clover Valley, US	daily rain	26.7 mm (1.1 in)	23.1 mm (0.9 in)	9 years	51 of 100 (Notable)
9 April 1986	Jayuya, PR	daily rain	71.4 mm (2.8 in)	39.6 mm (1.6 in)	60 years	47 of 100 (Notable)
9 April 1986	Zuerich/Fluntern, CH	monthly rain	49.5 mm (1.9 in)	2.7 mm (0.11 in)	85 years	47 of 100 (Notable)
9 April 1986	Willeroo, AU	daily rain	29.2 mm (1.1 in)	29.2 mm (1.1 in)	76 years	46 of 100 (Notable)
9 April 1986	Eagle, US	daily low max	-18.3 C (-0.9 F)	8.9 C (16.0 F)	83 years	46 of 100 (Notable)
9 April 1986	Elkins- Randolph Co AP, US	daily snowfall	22.1 cm (8.7 in)	16.5 cm (6.5 in)	0 years	46 of 100 (Notable)
9 April 1986	Praha-Klementinum, CZ	daily high max	24.6 C (76.3 F)	2.3 C (4.1 F)	119 years	44 of 100 (Notable)
9 April 1986	Chestnut Hill, US	daily high min	14.4 C (57.9 F)	3.3 C (5.9 F)	90 years	44 of 100 (Notable)
9 April 1986	Petersburg 1, US	monthly snowfall	20.3 cm (8.0 in)	7.6 cm (3.0 in)	17 years	44 of 100 (Notable)
9 April 1986	Warthausen-Birkenhard, DE	daily rain	40.2 mm (1.6 in)	4.3 mm (0.17 in)	84 years	42 of 100 (Notable)
9 April 1986	Corozal Substn, PR	daily rain	78.7 mm (3.1 in)	61.7 mm (2.4 in)	13 years	42 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 620 records.

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

Records on 04-09 in each year
Year	Records
1793	2
1798	1
1800	1
1805	1
1809	2
1812	2
1815	1
1818	1
1839	1
1842	2
1844	1
1846	1
1847	1
1849	1
1854	1
1856	1
1859	1
1862	1
1863	1
1864	1
1865	2
1866	2
1869	1
1871	2
1873	1
1877	1
1883	1
1884	1
1885	3
1886	1
1887	1
1888	3
1889	1
1890	7
1892	1
1893	1
1894	2
1895	4
1896	1
1897	3
1898	3
1899	9
1900	3
1901	8
1902	8
1903	12
1904	15
1905	21
1906	20
1907	21
1908	28
1909	25
1910	19
1911	21
1912	51
1913	16
1914	41
1915	89
1916	85
1917	105
1918	29
1919	67
1920	56
1921	114
1922	140
1923	79
1924	353
1925	129
1926	83
1927	260
1928	395
1929	402
1930	430
1931	193
1932	119
1933	320
1934	310
1935	398
1936	151
1937	172
1938	378
1939	282
1940	214
1941	297
1942	432
1943	752
1944	564
1945	1,055
1946	335
1947	174
1948	365
1949	179
1950	750
1951	304
1952	578
1953	638
1954	239
1955	484
1956	371
1957	502
1958	294
1959	634
1960	623
1961	879
1962	344
1963	390
1964	645
1965	651
1966	466
1967	743
1968	669
1969	898
1970	489
1971	576
1972	1,200
1973	1,695
1974	972
1975	968
1976	347
1977	1,693
1978	921
1979	855
1980	911
1981	785
1982	1,923
1983	1,170
1984	904
1985	1,424
1986	620
1987	604
1988	737
1989	1,402
1990	888
1991	1,545
1992	641
1993	687
1994	511
1995	1,296
1996	1,547
1997	2,686
1998	1,018
1999	1,848
2000	997
2001	1,947
2002	590
2003	1,781
2004	572
2005	998
2006	603
2007	1,412
2008	1,029
2009	802
2010	652
2011	1,480
2012	640
2013	1,245
2014	592
2015	664
2016	974
2017	759
2018	1,306
2019	716
2020	916
2021	642
2022	574
2023	512
2024	1,093
2025	530
2026	517

Download the Data

Data for records on 1986-04-09: 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 25	453
25 to 50	15
50 to 75	7
75 to 100	3
100 to 125	1
125 to 150	1
150 to 175	1
175 to 200	2