Weather Records on 7 May 1987

1,115 weather records were set or tied worldwide on 7 May 1987. Highest significance: Keanae 346, US.

Key Facts for 7 May 1987

On 7 May 1987, 1,115 weather records were set or tied at long-record stations worldwide.
812 were record highs and 104 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 24 monthly and 1,090 daily.
Keanae 346 set a daily record precipitation of 303.0 mm (11.9 in) on 7 May 1987.
Across 168 earlier years (1795 to 2026) the same calendar date averaged 414 records.

Record Map

1,115 stations

1,115 station records on 7 May 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 7 May 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Keanae 346	United States	Record daily precipitation	303.0 mm (11.9 in)	62 of 100 (Major)
Haleakala Exp Farm 434	United States	Record daily precipitation	107.7 mm (4.2 in)	57 of 100 (Notable)
Namiquipa	Mexico	Record daily precipitation	30.0 mm (1.2 in)	56 of 100 (Notable)
Mutoko	Zimbabwe	Record daily precipitation	51.1 mm (2.0 in)	56 of 100 (Notable)
Haleakala Rs 338	United States	Record daily precipitation	56.1 mm (2.2 in)	54 of 100 (Notable)
Paakea 350	United States	Record daily precipitation	274.3 mm (10.8 in)	54 of 100 (Notable)
Cernigov	Ukraine	Record daily precipitation	27.1 mm (1.1 in)	53 of 100 (Notable)
Nevada City	United States	Record high minimum temperature	15.6 C (60.1 F)	52 of 100 (Notable)
Waiehu Camp 484	United States	Record daily precipitation	85.1 mm (3.4 in)	52 of 100 (Notable)
Lnai Culture & Heritage Ctr	United States	Record daily precipitation	134.9 mm (5.3 in)	51 of 100 (Notable)
Wailuku 386	United States	Record daily precipitation	130.8 mm (5.1 in)	51 of 100 (Notable)
Spreckelsville 400	United States	Record daily precipitation	27.2 mm (1.1 in)	48 of 100 (Notable)
Corvallis State UNIV	United States	Record high minimum temperature	15.6 C (60.1 F)	47 of 100 (Notable)
Marysville	United States	Record high minimum temperature	21.1 C (70.0 F)	46 of 100 (Notable)
Forks 1 E	United States	Record high maximum temperature	33.9 C (93.0 F)	46 of 100 (Notable)
Weaverville	United States	Record high maximum temperature	38.9 C (102.0 F)	45 of 100 (Notable)
Puunene 396	United States	Record daily precipitation	35.1 mm (1.4 in)	45 of 100 (Notable)
Mc Minnville	United States	Record high minimum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Lacrosse	United States	Record high maximum temperature	35.6 C (96.1 F)	44 of 100 (Notable)
Drain	United States	Record high minimum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Hana AP 355	United States	Record daily precipitation	78.5 mm (3.1 in)	43 of 100 (Notable)
Headworks Portland Wtr B	United States	Record high minimum temperature	12.8 C (55.0 F)	42 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Napa State Hospital	United States	Record high maximum temperature	36.7 C (98.1 F)	40 of 100 (Notable)
Bangassou	Central African Republic	Record high maximum temperature	41.0 C (105.8 F)	39 of 100 (Notable)
Briceni	Ukraine	Record daily precipitation	56.2 mm (2.2 in)	39 of 100 (Notable)
Low Head (Comparison)	Australia	Record high maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Jambeiro	Brazil	Record daily precipitation	27.2 mm (1.1 in)	38 of 100 (Notable)
Los Gatos	United States	Record high minimum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Napa State Hospital	United States	Record high minimum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Sierra City	United States	Record high minimum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Republic	United States	Record high maximum temperature	31.1 C (88.0 F)	38 of 100 (Notable)
Wilbur	United States	Record high maximum temperature	31.7 C (89.1 F)	38 of 100 (Notable)
Adin Rs	United States	Record high minimum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Livermore	United States	Record high minimum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Wasco	United States	Record high maximum temperature	41.7 C (107.1 F)	37 of 100 (Notable)
Conrad	United States	Record high minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Drain	United States	Record high maximum temperature	33.9 C (93.0 F)	37 of 100 (Notable)
Erebango	Brazil	Record daily precipitation	82.6 mm (3.3 in)	36 of 100 (Notable)
Libby 32 SSE	United States	Record high maximum temperature	28.3 C (82.9 F)	36 of 100 (Notable)
Dayton 1 WSW	United States	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)
Vancouver 4 NNE	United States	Record high minimum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Waterville	United States	Record high maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
Paauilo 221	United States	Record daily precipitation	86.9 mm (3.4 in)	36 of 100 (Notable)
San Francisco Dwtn	United States	Record high maximum temperature	32.8 C (91.0 F)	36 of 100 (Notable)
Las Comitas	Mexico	Record daily precipitation	26.4 mm (1.0 in)	35 of 100 (Notable)
Nis	Serbia	Record daily precipitation	28.8 mm (1.1 in)	35 of 100 (Notable)
Sacaton	United States	Record high minimum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Yosemite Park HQ	United States	Record high minimum temperature	12.2 C (54.0 F)	35 of 100 (Notable)
Hamilton	United States	Record high maximum temperature	30.0 C (86.0 F)	35 of 100 (Notable)
Prineville	United States	Record high maximum temperature	34.4 C (93.9 F)	35 of 100 (Notable)
Davenport	United States	Record high maximum temperature	28.9 C (84.0 F)	35 of 100 (Notable)
Nova Bremen	Brazil	Record daily precipitation	57.0 mm (2.2 in)	34 of 100 (Routine)
Krasnyj Chikoj	Russia	Record high minimum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Bowman Dam	United States	Record high minimum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Dry Canyon Rsvr	United States	Record high maximum temperature	38.3 C (100.9 F)	34 of 100 (Routine)
Placerville	United States	Record high maximum temperature	35.6 C (96.1 F)	34 of 100 (Routine)
Elk City 1NE	United States	Record high maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Blackleaf	United States	Record high maximum temperature	27.8 C (82.0 F)	34 of 100 (Routine)
Grants Pass	United States	Record high maximum temperature	38.3 C (100.9 F)	34 of 100 (Routine)

Counts by Type and Timescale

1,115 records

Records set or tied on 7 May 1987 by type: Highest daily maximum 511, Lowest daily maximum 64, Highest daily minimum 301, Lowest daily minimum 40, Heaviest daily rainfall 198, Deepest snow cover 1.

Records on 7 May 1987 by type
Record type	Records
Highest daily maximum	511
Lowest daily maximum	64
Highest daily minimum	301
Lowest daily minimum	40
Heaviest daily rainfall	198
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 7 May 1987 by timescale: all-time 1, monthly 24, daily 1,090.

How Much Records Were Beaten By

950 broken records

Margins by which the 950 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 173.2. Ties are not counted.

Top 20 by Significance

7 May 1987

Top 20 records on 7 May 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 May 1987	Keanae 346, US	daily rain	303.0 mm (11.9 in)	156.9 mm (6.2 in)	49 years	62 of 100 (Major)
7 May 1987	Haleakala Exp Farm 434, US	daily rain	107.7 mm (4.2 in)	55.1 mm (2.2 in)	44 years	57 of 100 (Notable)
7 May 1987	Namiquipa, MX	monthly rain	30.0 mm (1.2 in)	9.2 mm (0.36 in)	59 years	56 of 100 (Notable)
7 May 1987	Mutoko, ZW	monthly rain	51.1 mm (2.0 in)	20.9 mm (0.8 in)	26 years	56 of 100 (Notable)
7 May 1987	Haleakala Rs 338, US	daily rain	56.1 mm (2.2 in)	31.2 mm (1.2 in)	44 years	54 of 100 (Notable)
7 May 1987	Paakea 350, US	daily rain	274.3 mm (10.8 in)	173.2 mm (6.8 in)	30 years	54 of 100 (Notable)
7 May 1987	Cernigov, UA	daily rain	27.1 mm (1.1 in)	19.2 mm (0.8 in)	48 years	53 of 100 (Notable)
7 May 1987	Nevada City, US	daily high min	15.6 C (60.1 F)	5.6 C (10.1 F)	92 years	52 of 100 (Notable)
7 May 1987	Waiehu Camp 484, US	daily rain	85.1 mm (3.4 in)	61.5 mm (2.4 in)	29 years	52 of 100 (Notable)
7 May 1987	Lnai Culture & Heritage Ctr, US	daily rain	134.9 mm (5.3 in)	111.3 mm (4.4 in)	21 years	51 of 100 (Notable)
7 May 1987	Wailuku 386, US	daily rain	130.8 mm (5.1 in)	127.0 mm (5.0 in)	28 years	51 of 100 (Notable)
7 May 1987	Spreckelsville 400, US	daily rain	27.2 mm (1.1 in)	20.3 mm (0.8 in)	28 years	48 of 100 (Notable)
7 May 1987	Corvallis State UNIV, US	daily high min	15.6 C (60.1 F)	4.5 C (8.1 F)	76 years	47 of 100 (Notable)
7 May 1987	Marysville, US	daily high min	21.1 C (70.0 F)	4.4 C (7.9 F)	76 years	46 of 100 (Notable)
7 May 1987	Forks 1 E, US	daily high max	33.9 C (93.0 F)	7.2 C (13.0 F)	78 years	46 of 100 (Notable)
7 May 1987	Weaverville, US	daily high max	38.9 C (102.0 F)	6.1 C (11.0 F)	92 years	45 of 100 (Notable)
7 May 1987	Puunene 396, US	daily rain	35.1 mm (1.4 in)	32.6 mm (1.3 in)	8 years	45 of 100 (Notable)
7 May 1987	Mc Minnville, US	daily high min	15.0 C (59.0 F)	3.3 C (5.9 F)	84 years	44 of 100 (Notable)
7 May 1987	Lacrosse, US	daily high max	35.6 C (96.1 F)	7.3 C (13.1 F)	73 years	44 of 100 (Notable)
7 May 1987	Drain, US	daily high min	12.8 C (55.0 F)	3.4 C (6.1 F)	81 years	43 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

1795 to 1987

Records set or tied on this calendar date in each year from 1795 to 1987. 1987 had 1,115 records.

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

Records on 05-07 in each year
Year	Records
1795	2
1805	1
1816	1
1825	2
1837	1
1838	1
1844	1
1845	2
1846	1
1848	2
1850	2
1852	1
1853	1
1856	3
1857	1
1861	3
1862	1
1863	1
1864	1
1867	3
1869	1
1870	1
1872	1
1874	2
1876	3
1878	1
1879	2
1880	1
1884	2
1885	1
1886	4
1887	1
1888	1
1889	2
1890	4
1891	4
1892	2
1894	4
1895	2
1897	5
1898	7
1899	3
1900	10
1901	1
1902	6
1903	13
1904	19
1905	21
1906	15
1907	14
1908	29
1909	15
1910	16
1911	14
1912	14
1913	30
1914	37
1915	40
1916	34
1917	188
1918	60
1919	263
1920	59
1921	41
1922	40
1923	119
1924	141
1925	207
1926	227
1927	191
1928	204
1929	224
1930	637
1931	473
1932	288
1933	291
1934	698
1935	298
1936	466
1937	121
1938	467
1939	194
1940	317
1941	317
1942	270
1943	416
1944	476
1945	751
1946	339
1947	727
1948	338
1949	439
1950	526
1951	226
1952	485
1953	541
1954	481
1955	393
1956	665
1957	546
1958	585
1959	335
1960	899
1961	442
1962	381
1963	825
1964	687
1965	671
1966	762
1967	973
1968	756
1969	678
1970	822
1971	364
1972	515
1973	447
1974	743
1975	784
1976	782
1977	662
1978	925
1979	888
1980	593
1981	710
1982	802
1983	724
1984	1,300
1985	557
1986	1,163
1987	1,115
1988	752
1989	1,880
1990	1,024
1991	599
1992	1,830
1993	831
1994	621
1995	997
1996	880
1997	1,359
1998	1,166
1999	1,008
2000	1,693
2001	743
2002	1,344
2003	1,138
2004	1,397
2005	645
2006	833
2007	1,047
2008	526
2009	735
2010	1,123
2011	558
2012	709
2013	633
2014	646
2015	569
2016	677
2017	543
2018	542
2019	522
2020	577
2021	484
2022	784
2023	667
2024	858
2025	635
2026	715

Download the Data

Data for records on 1987-05-07: 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	927
25 to 50	14
50 to 75	4
75 to 100	0
100 to 125	2
125 to 150	1
150 to 175	2