Weather Records on 30 April 1987

1,437 weather records were set or tied worldwide on 30 April 1987. Highest significance: Honokohua 493, US.

Key Facts for 30 April 1987

On 30 April 1987, 1,437 weather records were set or tied at long-record stations worldwide.
1,022 were record highs and 179 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 155 monthly and 1,280 daily.
Honokohua 493 set a daily record precipitation of 137.7 mm (5.4 in) on 30 April 1987.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 441 records.

Record Map

1,437 stations

1,437 station records on 30 April 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Honokohua 493	United States	Record daily precipitation	137.7 mm (5.4 in)	63 of 100 (Major)
N Stratford	United States	Record daily snowfall	10.2 cm (4.0 in)	57 of 100 (Notable)
Mayaguez AP	Puerto Rico [United States]	Record daily precipitation	139.7 mm (5.5 in)	55 of 100 (Notable)
Mt Washington	United States	Record daily snowfall	46.0 cm (18.1 in)	55 of 100 (Notable)
Huma	China	Record daily precipitation	34.2 mm (1.3 in)	51 of 100 (Notable)
Squa Pan Dam	United States	Record daily snowfall	15.2 cm (6.0 in)	49 of 100 (Notable)
Chimoio	Mozambique	Record daily precipitation	99.1 mm (3.9 in)	47 of 100 (Notable)
Norsk	Russia	Record daily precipitation	30.1 mm (1.2 in)	47 of 100 (Notable)
Stojba	Russia	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
Simanovskaja	Russia	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Jackman	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Deadwood	United States	Record high minimum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Santa Juliana	Brazil	Record daily precipitation	44.4 mm (1.7 in)	43 of 100 (Notable)
Kirchdorf/Poel	Germany	Record high maximum temperature	29.0 C (84.2 F)	43 of 100 (Notable)
Vanersborg	Sweden	Record high minimum temperature	9.4 C (48.9 F)	43 of 100 (Notable)
Stockholm	Sweden	Record high maximum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Madison	United States	Record daily snowfall	5.1 cm (2.0 in)	43 of 100 (Notable)
Oxford	United Kingdom	Record high minimum temperature	12.5 C (54.5 F)	42 of 100 (Notable)
Buxton	United Kingdom	Record high minimum temperature	8.7 C (47.7 F)	42 of 100 (Notable)
Blue	United States	Record high minimum temperature	10.0 C (50.0 F)	42 of 100 (Notable)
Bethlehem	United States	Record daily snowfall	5.1 cm (2.0 in)	42 of 100 (Notable)
Grangeville	United States	Record high minimum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record high maximum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Dublin Phoenix Park	Ireland	Record high minimum temperature	13.4 C (56.1 F)	40 of 100 (Notable)
Putbus	Germany	Record high minimum temperature	11.8 C (53.2 F)	40 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	1.2 C (34.2 F)	40 of 100 (Notable)
Durham	United Kingdom	Record high minimum temperature	8.9 C (48.0 F)	39 of 100 (Notable)
New Meadows Rs	United States	Record high minimum temperature	10.0 C (50.0 F)	39 of 100 (Notable)
Philipsburg Rs	United States	Record high minimum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Arlington	United States	Record high minimum temperature	15.6 C (60.1 F)	39 of 100 (Notable)
Hull	United Kingdom	Record high minimum temperature	11.3 C (52.3 F)	38 of 100 (Notable)
White Hall 1 E	United States	Record high maximum temperature	31.7 C (89.1 F)	38 of 100 (Notable)
Palmerville	Australia	Record high maximum temperature	34.5 C (94.1 F)	37 of 100 (Notable)
Mo I Rana III	Norway	Record daily precipitation	35.5 mm (1.4 in)	37 of 100 (Notable)
Potlatch 3 NNE	United States	Record high minimum temperature	11.7 C (53.1 F)	37 of 100 (Notable)
Sparta 1 W	United States	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Conception	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Clover Valley	United States	Record high minimum temperature	7.2 C (45.0 F)	37 of 100 (Notable)
Yerington	United States	Record high minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Sulphur Springs	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Black Rock	United States	Record high minimum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Rosalia	United States	Record high minimum temperature	13.3 C (55.9 F)	37 of 100 (Notable)
Wamsutter	United States	Record high minimum temperature	5.6 C (42.1 F)	37 of 100 (Notable)
Emerald Post Office	Australia	Record high minimum temperature	20.6 C (69.1 F)	36 of 100 (Notable)
Yahualica de Gonzalez Gallo (	Mexico	Record low maximum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Nord-Rana	Norway	Record daily precipitation	34.2 mm (1.3 in)	36 of 100 (Notable)
Gravette	United States	Record high maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
Lowman	United States	Record high minimum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
Effingham 3SW	United States	Record high maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
Ulysses 3NE	United States	Record high maximum temperature	32.8 C (91.0 F)	36 of 100 (Notable)
Broadus	United States	Record high minimum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Fairbury 7S	United States	Record high maximum temperature	33.9 C (93.0 F)	36 of 100 (Notable)
Hebron	United States	Record high maximum temperature	33.9 C (93.0 F)	36 of 100 (Notable)
Wells	United States	Record high minimum temperature	7.2 C (45.0 F)	36 of 100 (Notable)
Peterboro 2 S	United States	Record low maximum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
Brevard	United States	Record high minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Leavenworth 3 S	United States	Record high minimum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Low Head (Comparison)	Australia	Record low maximum temperature	11.8 C (53.2 F)	35 of 100 (Notable)
Nashville 1 E	United States	Record high maximum temperature	31.7 C (89.1 F)	35 of 100 (Notable)
Opheim 12 SSE	United States	Record high minimum temperature	15.6 C (60.1 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,437 records

Records set or tied on 30 April 1987 by type: Highest daily maximum 536, Lowest daily maximum 69, Highest daily minimum 486, Lowest daily minimum 110, Heaviest daily rainfall 199, Heaviest daily snowfall 15, Deepest snow cover 22.

Records on 30 April 1987 by type
Record type	Records
Highest daily maximum	536
Lowest daily maximum	69
Highest daily minimum	486
Lowest daily minimum	110
Heaviest daily rainfall	199
Heaviest daily snowfall	15
Deepest snow cover	22

Records on 30 April 1987 by timescale: all-time 2, monthly 155, daily 1,280.

How Much Records Were Beaten By

1,110 broken records

Margins by which the 1,110 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 343.0. Ties are not counted.

Top 20 by Significance

30 April 1987

Top 20 records on 30 April 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 1987	Honokohua 493, US	daily rain	137.7 mm (5.4 in)	84.9 mm (3.3 in)	58 years	63 of 100 (Major)
30 April 1987	N Stratford, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	84 years	57 of 100 (Notable)
30 April 1987	Mayaguez AP, PR	all-time rain	139.7 mm (5.5 in)	39.4 mm (1.6 in)	19 years	55 of 100 (Notable)
30 April 1987	Mt Washington, US	daily snowfall	46.0 cm (18.1 in)	34.3 cm (13.5 in)	38 years	55 of 100 (Notable)
30 April 1987	Huma, CN	daily rain	34.2 mm (1.3 in)	25.5 mm (1.0 in)	28 years	51 of 100 (Notable)
30 April 1987	Squa Pan Dam, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	58 years	49 of 100 (Notable)
30 April 1987	Chimoio, MZ	monthly rain	99.1 mm (3.9 in)	27.3 mm (1.1 in)	30 years	47 of 100 (Notable)
30 April 1987	Norsk, RU	daily rain	30.1 mm (1.2 in)	18.0 mm (0.7 in)	4 years	47 of 100 (Notable)
30 April 1987	Stojba, RU	monthly rain	36.3 mm (1.4 in)	10.8 mm (0.4 in)	39 years	47 of 100 (Notable)
30 April 1987	Simanovskaja, RU	daily rain	34.0 mm (1.3 in)	19.2 mm (0.8 in)	8 years	45 of 100 (Notable)
30 April 1987	Jackman, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	84 years	45 of 100 (Notable)
30 April 1987	Deadwood, US	monthly high min	15.6 C (60.1 F)	2.8 C (5.0 F)	72 years	44 of 100 (Notable)
30 April 1987	Santa Juliana, BR	daily rain	44.4 mm (1.7 in)	29.4 mm (1.2 in)	29 years	43 of 100 (Notable)
30 April 1987	Kirchdorf/Poel, DE	monthly high max	29.0 C (84.2 F)	0.5 C (0.9 F)	73 years	43 of 100 (Notable)
30 April 1987	Vanersborg, SE	daily high min	9.4 C (48.9 F)	1.4 C (2.5 F)	96 years	43 of 100 (Notable)
30 April 1987	Stockholm, SE	daily high max	22.8 C (73.0 F)	1.8 C (3.2 F)	96 years	43 of 100 (Notable)
30 April 1987	Madison, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	92 years	43 of 100 (Notable)
30 April 1987	Oxford, GB	daily high min	12.5 C (54.5 F)	0.7 C (1.3 F)	108 years	42 of 100 (Notable)
30 April 1987	Buxton, GB	daily high min	8.7 C (47.7 F)	0.7 C (1.3 F)	111 years	42 of 100 (Notable)
30 April 1987	Blue, US	daily high min	10.0 C (50.0 F)	3.9 C (7.0 F)	81 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

1795 to 1987

Records set or tied on this calendar date in each year from 1795 to 1987. 1987 had 1,437 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 1987-04-30: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 50	1,086
50 to 100	13
100 to 150	7
150 to 200	2
200 to 250	1
250 to 300	0
300 to 350	1