Weather Records on 11 May 1987

1,247 weather records were set or tied worldwide on 11 May 1987. Highest significance: Hopetoun, AU.

Key Facts for 11 May 1987

On 11 May 1987, 1,247 weather records were set or tied at long-record stations worldwide.
714 were record highs and 198 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 25 monthly and 1,218 daily.
Hopetoun set a daily record precipitation of 49.0 mm (1.9 in) on 11 May 1987.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 458 records.

Record Map

1,247 stations

1,247 station records on 11 May 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hopetoun	Australia	Record daily precipitation	49.0 mm (1.9 in)	68 of 100 (Major)
Coraki Post Office	Australia	Record daily precipitation	95.0 mm (3.7 in)	64 of 100 (Major)
Tomewin (Border Gate)	Australia	Record daily precipitation	266.0 mm (10.5 in)	64 of 100 (Major)
Myrup	Australia	Record daily precipitation	42.7 mm (1.7 in)	62 of 100 (Major)
Speddingup	Australia	Record daily precipitation	36.0 mm (1.4 in)	61 of 100 (Major)
Ballina (Crowley Village)	Australia	Record daily precipitation	144.0 mm (5.7 in)	60 of 100 (Major)
Lismore (Centre Street)	Australia	Record daily precipitation	120.0 mm (4.7 in)	56 of 100 (Notable)
Verhnjaja Gutara	Russia	Record daily precipitation	38.9 mm (1.5 in)	54 of 100 (Notable)
Salmon Gums Res.STN.	Australia	Record daily precipitation	32.4 mm (1.3 in)	52 of 100 (Notable)
Kalamunda	Australia	Record daily precipitation	73.8 mm (2.9 in)	50 of 100 (Notable)
Ravensthorpe	Australia	Record daily precipitation	33.0 mm (1.3 in)	50 of 100 (Notable)
Casino Airport	Australia	Record daily precipitation	114.6 mm (4.5 in)	50 of 100 (Notable)
Oake Marsh Farm	Australia	Record daily precipitation	44.0 mm (1.7 in)	49 of 100 (Notable)
Hateruma	Japan	Record daily precipitation	132.0 mm (5.2 in)	49 of 100 (Notable)
Millaa Millaa Post Office	Australia	Record daily precipitation	94.2 mm (3.7 in)	48 of 100 (Notable)
Chillingham	Australia	Record daily precipitation	193.0 mm (7.6 in)	48 of 100 (Notable)
Itapebi	Brazil	Record daily precipitation	47.0 mm (1.9 in)	48 of 100 (Notable)
Richmond C/K (Tnk)	South Africa	Record daily precipitation	28.5 mm (1.1 in)	47 of 100 (Notable)
Young River	Australia	Record daily precipitation	42.2 mm (1.7 in)	45 of 100 (Notable)
Corndale (Willow Vale)	Australia	Record daily precipitation	124.4 mm (4.9 in)	45 of 100 (Notable)
Comboyne Post Office	Australia	Record daily precipitation	100.0 mm (3.9 in)	45 of 100 (Notable)
Mullumbimby (Fairview Farm)	Australia	Record daily precipitation	350.0 mm (13.8 in)	44 of 100 (Notable)
Prinshof	South Africa	Record daily precipitation	37.5 mm (1.5 in)	44 of 100 (Notable)
Lahaina 361	United States	Record low maximum temperature	25.0 C (77.0 F)	44 of 100 (Notable)
Low Head (Comparison)	Australia	Record high maximum temperature	19.7 C (67.5 F)	43 of 100 (Notable)
Woodburn Post Office	Australia	Record daily precipitation	99.0 mm (3.9 in)	41 of 100 (Notable)
Nicosia	Cyprus	Record low maximum temperature	20.9 C (69.6 F)	41 of 100 (Notable)
Sarkand	Kazakhstan	Record daily precipitation	51.1 mm (2.0 in)	41 of 100 (Notable)
Naalehu 14	United States	Record low minimum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Federal Post Office	Australia	Record daily precipitation	261.3 mm (10.3 in)	40 of 100 (Notable)
Primghar	United States	Record high minimum temperature	17.2 C (63.0 F)	40 of 100 (Notable)
Long Prairie	United States	Record high maximum temperature	33.3 C (91.9 F)	40 of 100 (Notable)
Wonnenup	Australia	Record daily precipitation	26.4 mm (1.0 in)	39 of 100 (Notable)
Benton Harbor AP	United States	Record high minimum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Lake Yellowstone	United States	Record high minimum temperature	3.3 C (37.9 F)	39 of 100 (Notable)
Nevada City	United States	Record high minimum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Glenwood 3SW	United States	Record high maximum temperature	32.8 C (91.0 F)	38 of 100 (Notable)
Logan 1 WNW	United States	Record high maximum temperature	35.0 C (95.0 F)	38 of 100 (Notable)
Storm Lake	United States	Record high maximum temperature	31.7 C (89.1 F)	38 of 100 (Notable)
Pipestone	United States	Record high maximum temperature	33.9 C (93.0 F)	38 of 100 (Notable)
Selby	United States	Record high maximum temperature	32.2 C (90.0 F)	38 of 100 (Notable)
Wessington Springs	United States	Record high maximum temperature	32.8 C (91.0 F)	38 of 100 (Notable)
Corinne	United States	Record high minimum temperature	13.3 C (55.9 F)	38 of 100 (Notable)
Port Washington	United States	Record high maximum temperature	28.9 C (84.0 F)	38 of 100 (Notable)
Manypeaks	Australia	Record daily precipitation	29.0 mm (1.1 in)	37 of 100 (Notable)
Millerovo	Russia	Record daily precipitation	26.2 mm (1.0 in)	37 of 100 (Notable)
Mooredale	South Africa	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Auburn	United States	Record high minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Sharon Springs	United States	Record high minimum temperature	16.7 C (62.1 F)	37 of 100 (Notable)
Grand Meadow	United States	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record high maximum temperature	33.3 C (91.9 F)	37 of 100 (Notable)
Pine Rvr Dam	United States	Record high maximum temperature	30.6 C (87.1 F)	37 of 100 (Notable)
Wadena 3 S	United States	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Clearbrook	United States	Record high minimum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Clearwater	United States	Record high minimum temperature	11.7 C (53.1 F)	37 of 100 (Notable)
Dalyup Park	Australia	Record daily precipitation	36.6 mm (1.4 in)	36 of 100 (Notable)
Hannam Vale (Hannam Vale Road)	Australia	Record daily precipitation	67.0 mm (2.6 in)	36 of 100 (Notable)
Wrixum/Fohr	Germany	Record low maximum temperature	8.5 C (47.3 F)	36 of 100 (Notable)
Tejon Rancho	United States	Record high maximum temperature	35.6 C (96.1 F)	36 of 100 (Notable)
Iowa City	United States	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,247 records

Records set or tied on 11 May 1987 by type: Highest daily maximum 359, Lowest daily maximum 124, Highest daily minimum 355, Lowest daily minimum 74, Heaviest daily rainfall 335.

Records on 11 May 1987 by type
Record type	Records
Highest daily maximum	359
Lowest daily maximum	124
Highest daily minimum	355
Lowest daily minimum	74
Heaviest daily rainfall	335
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 May 1987 by timescale: all-time 4, monthly 25, daily 1,218.

How Much Records Were Beaten By

973 broken records

Margins by which the 973 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 216.5. Ties are not counted.

Top 20 by Significance

11 May 1987

Top 20 records on 11 May 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1987	Hopetoun, AU	daily rain	49.0 mm (1.9 in)	35.3 mm (1.4 in)	69 years	68 of 100 (Major)
11 May 1987	Coraki Post Office, AU	daily rain	95.0 mm (3.7 in)	76.5 mm (3.0 in)	56 years	64 of 100 (Major)
11 May 1987	Tomewin (Border Gate), AU	daily rain	266.0 mm (10.5 in)	216.5 mm (8.5 in)	56 years	64 of 100 (Major)
11 May 1987	Myrup, AU	daily rain	42.7 mm (1.7 in)	22.4 mm (0.9 in)	72 years	62 of 100 (Major)
11 May 1987	Speddingup, AU	daily rain	36.0 mm (1.4 in)	25.6 mm (1.0 in)	53 years	61 of 100 (Major)
11 May 1987	Ballina (Crowley Village), AU	daily rain	144.0 mm (5.7 in)	84.1 mm (3.3 in)	57 years	60 of 100 (Major)
11 May 1987	Lismore (Centre Street), AU	daily rain	120.0 mm (4.7 in)	98.2 mm (3.9 in)	22 years	56 of 100 (Notable)
11 May 1987	Verhnjaja Gutara, RU	monthly rain	38.9 mm (1.5 in)	12.2 mm (0.5 in)	22 years	54 of 100 (Notable)
11 May 1987	Salmon Gums Res.STN., AU	daily rain	32.4 mm (1.3 in)	21.0 mm (0.8 in)	26 years	52 of 100 (Notable)
11 May 1987	Kalamunda, AU	daily rain	73.8 mm (2.9 in)	43.6 mm (1.7 in)	25 years	50 of 100 (Notable)
11 May 1987	Ravensthorpe, AU	daily rain	33.0 mm (1.3 in)	21.6 mm (0.9 in)	26 years	50 of 100 (Notable)
11 May 1987	Casino Airport, AU	daily rain	114.6 mm (4.5 in)	67.6 mm (2.7 in)	0 years	50 of 100 (Notable)
11 May 1987	Oake Marsh Farm, AU	daily rain	44.0 mm (1.7 in)	27.5 mm (1.1 in)	20 years	49 of 100 (Notable)
11 May 1987	Hateruma, JP	daily rain	132.0 mm (5.2 in)	91.3 mm (3.6 in)	30 years	49 of 100 (Notable)
11 May 1987	Millaa Millaa Post Office, AU	daily rain	94.2 mm (3.7 in)	61.8 mm (2.4 in)	4 years	48 of 100 (Notable)
11 May 1987	Chillingham, AU	daily rain	193.0 mm (7.6 in)	164.6 mm (6.5 in)	17 years	48 of 100 (Notable)
11 May 1987	Itapebi, BR	daily rain	47.0 mm (1.9 in)	25.4 mm (1.0 in)	36 years	48 of 100 (Notable)
11 May 1987	Richmond C/K (Tnk), ZA	daily rain	28.5 mm (1.1 in)	6.9 mm (0.27 in)	102 years	47 of 100 (Notable)
11 May 1987	Young River, AU	daily rain	42.2 mm (1.7 in)	29.5 mm (1.2 in)	20 years	45 of 100 (Notable)
11 May 1987	Corndale (Willow Vale), AU	daily rain	124.4 mm (4.9 in)	100.6 mm (4.0 in)	0 years	45 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

1814 to 1987

Records set or tied on this calendar date in each year from 1814 to 1987. 1987 had 1,247 records.

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

Records on 05-11 in each year
Year	Records
1814	3
1832	1
1836	3
1837	1
1838	1
1848	2
1856	1
1860	2
1865	1
1867	1
1869	1
1872	1
1874	2
1879	2
1880	1
1881	5
1883	3
1884	2
1885	1
1886	2
1887	1
1888	1
1889	2
1892	1
1893	3
1894	2
1895	4
1896	3
1897	6
1898	5
1900	7
1901	9
1902	6
1903	7
1904	6
1905	12
1906	21
1907	44
1908	9
1909	12
1910	16
1911	99
1912	21
1913	20
1914	20
1915	16
1916	22
1917	40
1918	54
1919	56
1920	181
1921	58
1922	61
1923	111
1924	239
1925	410
1926	472
1927	318
1928	252
1929	126
1930	380
1931	254
1932	170
1933	429
1934	332
1935	276
1936	363
1937	170
1938	141
1939	213
1940	340
1941	411
1942	389
1943	646
1944	408
1945	483
1946	747
1947	480
1948	407
1949	451
1950	285
1951	395
1952	629
1953	686
1954	492
1955	235
1956	942
1957	439
1958	499
1959	575
1960	809
1961	663
1962	670
1963	984
1964	299
1965	356
1966	992
1967	974
1968	909
1969	349
1970	764
1971	565
1972	673
1973	429
1974	795
1975	383
1976	509
1977	836
1978	1,070
1979	1,239
1980	693
1981	1,298
1982	624
1983	930
1984	666
1985	835
1986	684
1987	1,247
1988	485
1989	952
1990	935
1991	990
1992	728
1993	1,088
1994	633
1995	1,244
1996	1,088
1997	1,033
1998	1,315
1999	1,052
2000	1,286
2001	848
2002	845
2003	1,321
2004	834
2005	944
2006	822
2007	833
2008	1,015
2009	605
2010	1,292
2011	1,414
2012	1,181
2013	615
2014	662
2015	1,038
2016	497
2017	546
2018	988
2019	915
2020	1,068
2021	590
2022	1,470
2023	390
2024	579
2025	1,104
2026	797

Download the Data

Data for records on 1987-05-11: 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 50	959
50 to 100	11
100 to 150	1
150 to 200	1
200 to 250	1