Weather Records on 17 May 2008

1,309 weather records were set or tied worldwide on 17 May 2008. Highest significance: Lugano, CH.

Key Facts for 17 May 2008

On 17 May 2008, 1,309 weather records were set or tied at long-record stations worldwide.
562 were record highs and 391 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 78 monthly and 1,230 daily.
Lugano set a daily record precipitation of 105.3 mm (4.1 in) on 17 May 2008.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 429 records.

Record Map

1,309 stations

1,309 station records on 17 May 2008 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 2008: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lugano	Switzerland	Record daily precipitation	105.3 mm (4.1 in)	78 of 100 (Major)
Woolsthorpe	Australia	Record daily precipitation	29.8 mm (1.2 in)	61 of 100 (Major)
Tirschenreuth-Lodermuhl	Germany	Record daily precipitation	30.8 mm (1.2 in)	61 of 100 (Major)
Williamstown (Glen Gillian)	Australia	Record daily precipitation	50.0 mm (2.0 in)	60 of 100 (Major)
Caltowie	Australia	Record daily precipitation	36.4 mm (1.4 in)	59 of 100 (Notable)
Spalding	Australia	Record daily precipitation	38.0 mm (1.5 in)	59 of 100 (Notable)
Rupanyup (Post Office)	Australia	Record daily precipitation	25.4 mm (1.0 in)	59 of 100 (Notable)
Andrews (Geralka)	Australia	Record daily precipitation	39.0 mm (1.5 in)	57 of 100 (Notable)
Casterton (Warrock)	Australia	Record daily precipitation	33.0 mm (1.3 in)	57 of 100 (Notable)
Hebron	United States	Record snow depth	48.3 cm (19.0 in)	57 of 100 (Notable)
Casterton (Roseneath)	Australia	Record daily precipitation	30.4 mm (1.2 in)	56 of 100 (Notable)
Frances	Australia	Record daily precipitation	30.4 mm (1.2 in)	55 of 100 (Notable)
Rosedale (Turretfield Research	Australia	Record daily precipitation	33.2 mm (1.3 in)	54 of 100 (Notable)
Ki Ki (Moorilla)	Australia	Record daily precipitation	28.2 mm (1.1 in)	54 of 100 (Notable)
Hallett	Australia	Record daily precipitation	33.6 mm (1.3 in)	52 of 100 (Notable)
Moonta	Australia	Record daily precipitation	32.8 mm (1.3 in)	52 of 100 (Notable)
Bungaree (Kirks Reservoir)	Australia	Record daily precipitation	26.4 mm (1.0 in)	52 of 100 (Notable)
Coupeville 1 S	United States	Record high minimum temperature	13.9 C (57.0 F)	52 of 100 (Notable)
Arthurton (Lowandale)	Australia	Record daily precipitation	30.4 mm (1.2 in)	51 of 100 (Notable)
Terang	Australia	Record daily precipitation	25.2 mm (1.0 in)	51 of 100 (Notable)
De Funiak Springs 1 E	United States	Record daily precipitation	99.6 mm (3.9 in)	51 of 100 (Notable)
Wallaroo	Australia	Record daily precipitation	32.0 mm (1.3 in)	50 of 100 (Notable)
Cuetzalan del Progreso	Mexico	Record daily precipitation	139.7 mm (5.5 in)	50 of 100 (Notable)
Bute	Australia	Record daily precipitation	34.0 mm (1.3 in)	49 of 100 (Notable)
Georgetown	Australia	Record daily precipitation	36.2 mm (1.4 in)	49 of 100 (Notable)
Lyndoch	Australia	Record daily precipitation	43.6 mm (1.7 in)	49 of 100 (Notable)
Myponga	Australia	Record daily precipitation	47.4 mm (1.9 in)	49 of 100 (Notable)
Casterton Showgrounds	Australia	Record daily precipitation	34.0 mm (1.3 in)	49 of 100 (Notable)
Kersbrook (Mabenjo)	Australia	Record daily precipitation	52.6 mm (2.1 in)	48 of 100 (Notable)
Riddle	United States	Record high maximum temperature	41.1 C (106.0 F)	48 of 100 (Notable)
Hallett (Lorraine)	Australia	Record daily precipitation	48.0 mm (1.9 in)	47 of 100 (Notable)
Clarendon	Australia	Record daily precipitation	70.0 mm (2.8 in)	47 of 100 (Notable)
Napa State Hospital	United States	Record high minimum temperature	16.1 C (61.0 F)	47 of 100 (Notable)
Glenorchy	Australia	Record daily precipitation	26.5 mm (1.0 in)	46 of 100 (Notable)
Nueva Casas Grandes	Mexico	Record daily precipitation	29.5 mm (1.2 in)	46 of 100 (Notable)
Malung	Sweden	Record snow depth	16.0 cm (6.3 in)	46 of 100 (Notable)
San Nicolas Is	United States	Record high minimum temperature	17.8 C (64.0 F)	46 of 100 (Notable)
Mount Bryan	Australia	Record daily precipitation	28.8 mm (1.1 in)	45 of 100 (Notable)
Naracoorte (Bettws-Y-Coed)	Australia	Record daily precipitation	27.8 mm (1.1 in)	45 of 100 (Notable)
Vacoas (Mauritius)	Mauritius	Record daily precipitation	169.9 mm (6.7 in)	45 of 100 (Notable)
Longwood	Australia	Record daily precipitation	60.0 mm (2.4 in)	44 of 100 (Notable)
Murtoa	Australia	Record daily precipitation	28.2 mm (1.1 in)	44 of 100 (Notable)
Jesus del Monte	Mexico	Record high minimum temperature	20.6 C (69.1 F)	44 of 100 (Notable)
San Vicente	Mexico	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Eldon	United States	Record low minimum temperature	0.0 C (32.0 F)	44 of 100 (Notable)
Colville	United States	Record high maximum temperature	33.3 C (91.9 F)	44 of 100 (Notable)
Cherry Gardens	Australia	Record daily precipitation	66.4 mm (2.6 in)	43 of 100 (Notable)
Happy Valley Reservoir	Australia	Record daily precipitation	44.8 mm (1.8 in)	43 of 100 (Notable)
Myponga Reservoir	Australia	Record daily precipitation	41.0 mm (1.6 in)	43 of 100 (Notable)
Prospect Hill	Australia	Record daily precipitation	41.4 mm (1.6 in)	43 of 100 (Notable)
Williamstown (South Para Reser	Australia	Record daily precipitation	52.4 mm (2.1 in)	43 of 100 (Notable)
Coleraine (Melville Forest)	Australia	Record daily precipitation	26.6 mm (1.0 in)	43 of 100 (Notable)
Aberdeen	United States	Record low maximum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Middletown 2 NW	United States	Record low maximum temperature	11.1 C (52.0 F)	43 of 100 (Notable)
Aberdeen	United States	Record high minimum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Bridgewater	Australia	Record daily precipitation	69.2 mm (2.7 in)	42 of 100 (Notable)
Hindmarsh Valley (Fernbrook)	Australia	Record daily precipitation	48.4 mm (1.9 in)	42 of 100 (Notable)
Skipton Post Office	Australia	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Nullawarre	Australia	Record daily precipitation	37.8 mm (1.5 in)	42 of 100 (Notable)
Half Moon Bay	United States	Record high maximum temperature	26.1 C (79.0 F)	42 of 100 (Notable)

Counts by Type and Timescale

1,309 records

Records set or tied on 17 May 2008 by type: Highest daily maximum 333, Lowest daily maximum 299, Highest daily minimum 229, Lowest daily minimum 92, Heaviest daily rainfall 352, Deepest snow cover 4.

Records on 17 May 2008 by type
Record type	Records
Highest daily maximum	333
Lowest daily maximum	299
Highest daily minimum	229
Lowest daily minimum	92
Heaviest daily rainfall	352
Heaviest daily snowfall	0
Deepest snow cover	4

Records on 17 May 2008 by timescale: all-time 1, monthly 78, daily 1,230.

How Much Records Were Beaten By

1,042 broken records

Margins by which the 1,042 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 483.0. Ties are not counted.

Top 20 by Significance

17 May 2008

Top 20 records on 17 May 2008 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 2008	Lugano, CH	daily rain	105.3 mm (4.1 in)	64.7 mm (2.5 in)	95 years	78 of 100 (Major)
17 May 2008	Woolsthorpe, AU	daily rain	29.8 mm (1.2 in)	12.8 mm (0.5 in)	93 years	61 of 100 (Major)
17 May 2008	Tirschenreuth-Lodermuhl, DE	daily rain	30.8 mm (1.2 in)	23.3 mm (0.9 in)	52 years	61 of 100 (Major)
17 May 2008	Williamstown (Glen Gillian), AU	daily rain	50.0 mm (2.0 in)	31.2 mm (1.2 in)	53 years	60 of 100 (Major)
17 May 2008	Caltowie, AU	daily rain	36.4 mm (1.4 in)	19.4 mm (0.8 in)	53 years	59 of 100 (Notable)
17 May 2008	Spalding, AU	daily rain	38.0 mm (1.5 in)	18.7 mm (0.7 in)	62 years	59 of 100 (Notable)
17 May 2008	Rupanyup (Post Office), AU	daily rain	25.4 mm (1.0 in)	12.2 mm (0.5 in)	97 years	59 of 100 (Notable)
17 May 2008	Andrews (Geralka), AU	daily rain	39.0 mm (1.5 in)	28.3 mm (1.1 in)	40 years	57 of 100 (Notable)
17 May 2008	Casterton (Warrock), AU	daily rain	33.0 mm (1.3 in)	16.7 mm (0.7 in)	53 years	57 of 100 (Notable)
17 May 2008	Hebron, US	daily snow depth	48.3 cm (19.0 in)	48.3 cm (19.0 in)	44 years	57 of 100 (Notable)
17 May 2008	Casterton (Roseneath), AU	daily rain	30.4 mm (1.2 in)	9.3 mm (0.37 in)	108 years	56 of 100 (Notable)
17 May 2008	Frances, AU	daily rain	30.4 mm (1.2 in)	8.6 mm (0.34 in)	108 years	55 of 100 (Notable)
17 May 2008	Rosedale (Turretfield Research, AU	daily rain	33.2 mm (1.3 in)	19.0 mm (0.7 in)	46 years	54 of 100 (Notable)
17 May 2008	Ki Ki (Moorilla), AU	daily rain	28.2 mm (1.1 in)	19.8 mm (0.8 in)	36 years	54 of 100 (Notable)
17 May 2008	Hallett, AU	daily rain	33.6 mm (1.3 in)	13.5 mm (0.5 in)	62 years	52 of 100 (Notable)
17 May 2008	Moonta, AU	daily rain	32.8 mm (1.3 in)	13.7 mm (0.5 in)	62 years	52 of 100 (Notable)
17 May 2008	Bungaree (Kirks Reservoir), AU	daily rain	26.4 mm (1.0 in)	8.6 mm (0.34 in)	113 years	52 of 100 (Notable)
17 May 2008	Coupeville 1 S, US	monthly high min	13.9 C (57.0 F)	0.6 C (1.1 F)	101 years	52 of 100 (Notable)
17 May 2008	Arthurton (Lowandale), AU	daily rain	30.4 mm (1.2 in)	21.0 mm (0.8 in)	22 years	51 of 100 (Notable)
17 May 2008	Terang, AU	daily rain	25.2 mm (1.0 in)	8.7 mm (0.34 in)	93 years	51 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 2008

Records set or tied on this calendar date in each year from 1802 to 2008. 2008 had 1,309 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 2008-05-17: 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 100	1,039
100 to 200	1
200 to 300	1
300 to 400	0
400 to 500	1