Weather Records on 17 May 1987

1,054 weather records were set or tied worldwide on 17 May 1987. Highest significance: Darwin Botanic Gardens, AU.

Key Facts for 17 May 1987

On 17 May 1987, 1,054 weather records were set or tied at long-record stations worldwide.
399 were record highs and 222 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 22 monthly and 1,029 daily.
Darwin Botanic Gardens set a daily record precipitation of 52.2 mm (2.1 in) on 17 May 1987.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 431 records.

Record Map

1,054 stations

1,054 station records on 17 May 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Darwin Botanic Gardens	Australia	Record daily precipitation	52.2 mm (2.1 in)	77 of 100 (Major)
Susanville 2SW	United States	Record daily precipitation	35.8 mm (1.4 in)	64 of 100 (Major)
Round Spring 2SW	United States	Record daily precipitation	94.2 mm (3.7 in)	57 of 100 (Notable)
Fargo Hector Intl AP	United States	Record daily precipitation	26.7 mm (1.1 in)	56 of 100 (Notable)
Frykfors	Sweden	Record daily precipitation	32.3 mm (1.3 in)	52 of 100 (Notable)
Island Lake Rsvr	United States	Record daily precipitation	56.6 mm (2.2 in)	51 of 100 (Notable)
Whiteface Rsvr	United States	Record daily precipitation	47.0 mm (1.9 in)	51 of 100 (Notable)
Hawkhurst	Australia	Record daily precipitation	57.0 mm (2.2 in)	50 of 100 (Notable)
Dejefors	Sweden	Record daily precipitation	38.4 mm (1.5 in)	50 of 100 (Notable)
Menard 3 NE	United States	Record daily precipitation	33.0 mm (1.3 in)	50 of 100 (Notable)
Ngukurr	Australia	Record daily precipitation	58.4 mm (2.3 in)	49 of 100 (Notable)
Soderhamn A	Sweden	Record daily precipitation	32.0 mm (1.3 in)	48 of 100 (Notable)
Walker	United States	Record daily precipitation	52.6 mm (2.1 in)	48 of 100 (Notable)
Eureka	United States	Record daily precipitation	41.9 mm (1.6 in)	48 of 100 (Notable)
Drevsjo	Norway	Record daily precipitation	34.7 mm (1.4 in)	47 of 100 (Notable)
Horken	Sweden	Record daily precipitation	31.6 mm (1.2 in)	46 of 100 (Notable)
Reno AP	United States	Record daily precipitation	44.7 mm (1.8 in)	46 of 100 (Notable)
Finnbacka_D	Sweden	Record daily precipitation	28.4 mm (1.1 in)	45 of 100 (Notable)
Red Lake Falls	United States	Record daily precipitation	54.6 mm (2.1 in)	45 of 100 (Notable)
Culbertson	United States	Record daily precipitation	29.0 mm (1.1 in)	45 of 100 (Notable)
Inhambupe	Brazil	Record daily precipitation	41.0 mm (1.6 in)	44 of 100 (Notable)
Norrsundet	Sweden	Record daily precipitation	25.1 mm (1.0 in)	44 of 100 (Notable)
Tonichi	Mexico	Record daily precipitation	27.9 mm (1.1 in)	43 of 100 (Notable)
Tower 2S	United States	Record daily precipitation	36.1 mm (1.4 in)	43 of 100 (Notable)
Atorp	Sweden	Record daily precipitation	29.4 mm (1.2 in)	42 of 100 (Notable)
Winton Pwr Plt	United States	Record daily precipitation	40.9 mm (1.6 in)	42 of 100 (Notable)
Nukinenda	Australia	Record daily precipitation	62.0 mm (2.4 in)	40 of 100 (Notable)
Svappavaara	Sweden	Record daily precipitation	27.0 mm (1.1 in)	40 of 100 (Notable)
Arcadia	United States	Record daily precipitation	119.4 mm (4.7 in)	40 of 100 (Notable)
Two Harbors	United States	Record daily precipitation	27.9 mm (1.1 in)	40 of 100 (Notable)
Vega de Alatorre	Mexico	Record low minimum temperature	10.6 C (51.1 F)	39 of 100 (Notable)
Terry	United States	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Springview 2NW	United States	Record high minimum temperature	17.2 C (63.0 F)	38 of 100 (Notable)
Academy 2NE	United States	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Darwin Airport	Australia	Record daily precipitation	38.2 mm (1.5 in)	37 of 100 (Notable)
Telluride 4WNW	United States	Record high minimum temperature	4.4 C (39.9 F)	37 of 100 (Notable)
Pollock	United States	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
Superior	United States	Record daily precipitation	28.4 mm (1.1 in)	37 of 100 (Notable)
Nyhammar	Sweden	Record daily precipitation	30.2 mm (1.2 in)	36 of 100 (Notable)
Wells	United States	Record high minimum temperature	8.9 C (48.0 F)	36 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record high maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)
Poplar 2 E	United States	Record daily precipitation	25.9 mm (1.0 in)	35 of 100 (Notable)
Dargo	Australia	Record daily precipitation	65.6 mm (2.6 in)	34 of 100 (Routine)
Grangesberg	Sweden	Record daily precipitation	28.0 mm (1.1 in)	34 of 100 (Routine)
Long Prairie	United States	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Glendive	United States	Record daily precipitation	25.4 mm (1.0 in)	34 of 100 (Routine)
Duluth	United States	Record daily precipitation	37.8 mm (1.5 in)	34 of 100 (Routine)
Moorcroft 3S	United States	Record daily precipitation	34.0 mm (1.3 in)	34 of 100 (Routine)
Widgee	Australia	Record daily precipitation	190.0 mm (7.5 in)	33 of 100 (Routine)
Uruapan (Smn)	Mexico	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Cosala	Mexico	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Paonia 1SW	United States	Record high minimum temperature	11.1 C (52.0 F)	33 of 100 (Routine)
Hinckley	United States	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Weyerhaeuser 1N	United States	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)
Cuatro Cienegas (Smn)	Mexico	Record high maximum temperature	47.8 C (118.0 F)	32 of 100 (Routine)
San Juan del Mezquital	Mexico	Record daily precipitation	26.2 mm (1.0 in)	32 of 100 (Routine)
Urepetiro	Mexico	Record low maximum temperature	20.0 C (68.0 F)	32 of 100 (Routine)
Ramsjoholm	Sweden	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Portola	United States	Record high minimum temperature	7.2 C (45.0 F)	32 of 100 (Routine)
Knoxville	United States	Record high minimum temperature	21.7 C (71.1 F)	32 of 100 (Routine)

Counts by Type and Timescale

1,054 records

Records set or tied on 17 May 1987 by type: Highest daily maximum 184, Lowest daily maximum 56, Highest daily minimum 215, Lowest daily minimum 166, Heaviest daily rainfall 433.

Records on 17 May 1987 by type
Record type	Records
Highest daily maximum	184
Lowest daily maximum	56
Highest daily minimum	215
Lowest daily minimum	166
Heaviest daily rainfall	433
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 May 1987 by timescale: all-time 3, monthly 22, daily 1,029.

How Much Records Were Beaten By

890 broken records

Margins by which the 890 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 74.9. Ties are not counted.

Top 20 by Significance

17 May 1987

Top 20 records on 17 May 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1987	Darwin Botanic Gardens, AU	daily rain	52.2 mm (2.1 in)	52.2 mm (2.1 in)	102 years	77 of 100 (Major)
17 May 1987	Susanville 2SW, US	monthly rain	35.8 mm (1.4 in)	7.9 mm (0.31 in)	91 years	64 of 100 (Major)
17 May 1987	Round Spring 2SW, US	daily rain	94.2 mm (3.7 in)	74.9 mm (2.9 in)	29 years	57 of 100 (Notable)
17 May 1987	Fargo Hector Intl AP, US	daily rain	26.7 mm (1.1 in)	17.8 mm (0.7 in)	94 years	56 of 100 (Notable)
17 May 1987	Frykfors, SE	daily rain	32.3 mm (1.3 in)	23.1 mm (0.9 in)	28 years	52 of 100 (Notable)
17 May 1987	Island Lake Rsvr, US	daily rain	56.6 mm (2.2 in)	50.0 mm (2.0 in)	24 years	51 of 100 (Notable)
17 May 1987	Whiteface Rsvr, US	daily rain	47.0 mm (1.9 in)	36.1 mm (1.4 in)	24 years	51 of 100 (Notable)
17 May 1987	Hawkhurst, AU	daily rain	57.0 mm (2.2 in)	31.6 mm (1.2 in)	34 years	50 of 100 (Notable)
17 May 1987	Dejefors, SE	daily rain	38.4 mm (1.5 in)	28.1 mm (1.1 in)	20 years	50 of 100 (Notable)
17 May 1987	Menard 3 NE, US	daily rain	33.0 mm (1.3 in)	25.9 mm (1.0 in)	28 years	50 of 100 (Notable)
17 May 1987	Ngukurr, AU	daily rain	58.4 mm (2.3 in)	57.9 mm (2.3 in)	20 years	49 of 100 (Notable)
17 May 1987	Soderhamn A, SE	daily rain	32.0 mm (1.3 in)	23.4 mm (0.9 in)	17 years	48 of 100 (Notable)
17 May 1987	Walker, US	daily rain	52.6 mm (2.1 in)	31.0 mm (1.2 in)	24 years	48 of 100 (Notable)
17 May 1987	Eureka, US	monthly rain	41.9 mm (1.6 in)	4.3 mm (0.17 in)	73 years	48 of 100 (Notable)
17 May 1987	Drevsjo, NO	daily rain	34.7 mm (1.4 in)	29.1 mm (1.1 in)	16 years	47 of 100 (Notable)
17 May 1987	Horken, SE	daily rain	31.6 mm (1.2 in)	16.1 mm (0.6 in)	28 years	46 of 100 (Notable)
17 May 1987	Reno AP, US	monthly rain	44.7 mm (1.8 in)	12.2 mm (0.5 in)	23 years	46 of 100 (Notable)
17 May 1987	Finnbacka_D, SE	daily rain	28.4 mm (1.1 in)	17.8 mm (0.7 in)	16 years	45 of 100 (Notable)
17 May 1987	Red Lake Falls, US	daily rain	54.6 mm (2.1 in)	29.5 mm (1.2 in)	24 years	45 of 100 (Notable)
17 May 1987	Culbertson, US	daily rain	29.0 mm (1.1 in)	9.4 mm (0.37 in)	84 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

1802 to 1987

Records set or tied on this calendar date in each year from 1802 to 1987. 1987 had 1,054 records.

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

Records on 05-17 in each year
Year	Records
1802	2
1803	1
1808	1
1816	1
1834	1
1837	1
1839	1
1847	2
1848	1
1851	1
1853	1
1855	1
1858	1
1859	1
1861	2
1862	2
1863	2
1864	1
1871	2
1872	2
1873	2
1874	4
1877	1
1878	1
1879	2
1880	1
1881	1
1882	2
1883	3
1885	1
1887	1
1888	2
1889	3
1891	8
1892	4
1893	3
1895	8
1896	2
1897	3
1898	6
1899	7
1900	12
1901	2
1902	3
1903	9
1904	12
1905	10
1906	22
1907	10
1908	5
1909	33
1910	16
1911	30
1912	16
1913	24
1914	24
1915	53
1916	49
1917	18
1918	56
1919	35
1920	46
1921	50
1922	30
1923	95
1924	80
1925	326
1926	133
1927	264
1928	127
1929	168
1930	421
1931	201
1932	288
1933	365
1934	373
1935	341
1936	270
1937	183
1938	340
1939	285
1940	338
1941	408
1942	589
1943	855
1944	521
1945	799
1946	586
1947	249
1948	412
1949	544
1950	371
1951	373
1952	777
1953	441
1954	298
1955	570
1956	1,166
1957	469
1958	331
1959	488
1960	402
1961	291
1962	1,325
1963	368
1964	417
1965	462
1966	489
1967	644
1968	564
1969	638
1970	711
1971	723
1972	610
1973	1,016
1974	1,302
1975	365
1976	426
1977	1,078
1978	872
1979	459
1980	768
1981	940
1982	476
1983	1,326
1984	925
1985	561
1986	921
1987	1,054
1988	1,096
1989	1,307
1990	1,135
1991	1,237
1992	1,025
1993	495
1994	858
1995	1,734
1996	1,706
1997	1,619
1998	1,080
1999	795
2000	825
2001	960
2002	964
2003	1,127
2004	769
2005	784
2006	1,522
2007	742
2008	1,309
2009	1,050
2010	880
2011	1,483
2012	711
2013	739
2014	1,062
2015	824
2016	741
2017	1,302
2018	726
2019	686
2020	496
2021	443
2022	479
2023	385
2024	566
2025	928
2026	745

Download the Data

Data for records on 1987-05-17: 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 10	786
10 to 20	74
20 to 30	20
30 to 40	5
40 to 50	1
50 to 60	3
60 to 70	0
70 to 80	1